USRE42062E1 - Battery charger for cellular phone, having speaker - Google Patents

Battery charger for cellular phone, having speaker Download PDF

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Publication number
USRE42062E1
USRE42062E1 US11/373,869 US37386906A USRE42062E US RE42062 E1 USRE42062 E1 US RE42062E1 US 37386906 A US37386906 A US 37386906A US RE42062 E USRE42062 E US RE42062E
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United States
Prior art keywords
charger
audio signal
cellular phone
mobile phone
communication port
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Expired - Lifetime
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US11/373,869
Inventor
Sang Yong Yi
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LG Electronics Inc
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LG Electronics Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/11—Supports for sets, e.g. incorporating armrests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files

Definitions

  • the present invention relates to a battery charger for a cellular phone, and more particularly, to a battery charger for a cellular phone, having a speaker which can play music to a listener and enable a telephone conversation in a speaker phone mode during charging the cellular phone.
  • a battery charger for a cellular phone charges a battery through a connection terminal at the rear of the battery in a state that the battery is only inserted into the battery charger or the cellular phone having the battery is inserted into the battery charger.
  • FIG. 1 is a perspective view illustrating a related art battery charger for a cellular phone
  • FIG. 2 is a front view illustrating a related art battery charger into which a cellular phone is inserted
  • FIG. 3 shows a side view and a rear view of a related art battery charger
  • FIG. 4 is a block diagram illustrating a related art battery charger for a cellular phone.
  • the related art battery charger for a cellular phone includes a main body 5 provided with a charging terminal 11 to support the cellular phone when the cellular phone in inserted into the main body 5 . Accordingly, if the cellular phone is inserted into the battery charger, a charging terminal 9 of a battery is connected with the charging terminal 11 of the battery charger to charge the battery of the cellular phone as shown in FIGS. 2 and 3 .
  • the related art battery charger for a cellular phone includes a filter 20 for eliminating noise of an externally input commercial alternating current voltage of 100-220V, a rectifying and sudden current restricting circuit 22 for converting the alternating current voltage having no noise into a direct current voltage and protecting an internal circuit from sudden variation of voltage and current, a switching and over current protecting circuit 24 for switching the direct current voltage output from the rectifying and sudden current restricting circuit 22 and preventing flow of the over current from occurring, a rectifying circuit 26 for rectifying again the voltage output from the switching and over current protecting circuit 24 to supply more stable direct current voltage, a feedback circuit 30 and a constant voltage integrated circuit 32 for sensing the output voltage of the rectifying circuit 26 , and a microcomputer 38 and an output adjusting circuit 34 for controlling the operation of the battery charger.
  • a filter 20 for eliminating noise of an externally input commercial alternating current voltage of 100-220V
  • a rectifying and sudden current restricting circuit 22 for converting the alternating current voltage having no noise into a direct current voltage and protecting an internal circuit from sudden
  • An external commercial power source becomes a direct current voltage state through the filter 20 and the rectifying and sudden current restricting circuit 22 .
  • the direct current voltage is output through the switching over current protecting circuit 24 .
  • the direct current voltage is rectified again by the rectifying circuit 26 so as to be supplied to the battery of the cellular phone as a stable direct current voltage, thereby charging the battery.
  • the microcomputer 38 senses an output terminal of the rectifying circuit 26 through the feedback circuit 30 and the constant voltage integrated circuit 32 .
  • the microcomputer 38 also controls the direct current voltage supplied to the battery through the output adjusting circuit 34 , thereby outputting a constant voltage.
  • the microcomputer 38 senses a temperature of the battery so that the battery is charged only at a constant temperature.
  • the microcomputer 38 also informs a user through a light emitting diode (LED) whether the battery is charging.
  • LED light emitting diode
  • the related art battery charger for a cellular phone has a drawback in that it is only used for charging the battery of the cellular phone. Accordingly, it is impossible to listen to music during charging the battery of the cellular phone in even case that the cellular phone is designed to play MP3 music. Since it is possible to listen to music in only a standby state of the cellular phone after charging the battery, the battery is consumed quickly, thereby reducing call/standby time.
  • the present invention is directed to a battery charger for a cellular phone, having a speaker that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a battery charger for a cellular phone, having a speaker which can play music to a listener and enable a telephone conversation in a speaker phone mode during charging the cellular phone.
  • the battery charger for a cellular phone, having a speaker according to the present invention further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted (connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.
  • the battery charger for a cellular phone, having a speaker according to the present invention further includes a memory for storing a music signal input from the communication port.
  • the selector connects the ear jack with the voice amplifier if the ear jack of the cellular phone is connected with the ear jack of the battery charger, while the selector connects the communication port with the voice amplifier if the communication port of the cellular phone is connected with the communication port of the battery charger.
  • FIG. 1 is a perspective view illustrating a related art battery charger for a cellular phone
  • FIG. 2 is a front view illustrating a related art battery charger into which a cellular phone is inserted;
  • FIG. 3 shows a side view and a rear view of a related art battery charger
  • FIG. 4 is a block diagram illustrating a related art battery charger for a cellular phone
  • FIG. 5a is a front view illustrating a cellular phone in which a general ear jack can be used
  • FIG. 5b is a bottom view of the cellular phone of FIG. 5a ;
  • FIG. 6a is a front view illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention
  • FIG. 6b is a partially enlarged view of a portion A of FIG. 6a ;
  • FIG. 7 is a block diagram illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention.
  • FIG. 5a is a front view illustrating a cellular phone in which a general ear jack can be used
  • FIG. 5b is a bottom view of the cellular phone of FIG. 5a
  • FIG. 6a is a front view illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention
  • FIG. 6b is a partially enlarged view of a portion A of FIG. 6a
  • FIG. 7 is a block diagram illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention.
  • the battery charger for a cellular phone, having a speaker according to the present invention further includes the following configuration in a state that circuits for charging the battery of the cellular phone are provided as shown in FIG. 4 .
  • the battery charger for a cellular phone having a speaker includes an ear jack 220 for transmitting a voice signal of a cellular phone 100 to a battery charger 200 through an ear jack 120 of the cellular phone 100 , a communication port 250 connected to a communication port 150 of the cellular phone 100 when the cellular phone 100 is inserted (connected) to the battery charger 200 , for mutually transmitting the voice signal of the cellular phone 100 , and a memory 260 for storing a music signal from the cellular phone 100 through the communication port 250 .
  • the battery charger further includes a selector 210 for selecting the voice signal from the ear jack 220 or the voice signal from the communication port 250 in accordance with insertion of the cellular phone 100 into the battery charger 200 , a voice amplifier 240 for amplifying the voice signal selected by the selector 210 , and a speaker 230 for converting the voice signal output from the voice amplifier 240 into voice.
  • a selector 210 for selecting the voice signal from the ear jack 220 or the voice signal from the communication port 250 in accordance with insertion of the cellular phone 100 into the battery charger 200
  • a voice amplifier 240 for amplifying the voice signal selected by the selector 210
  • a speaker 230 for converting the voice signal output from the voice amplifier 240 into voice.
  • the selector 210 connects the ear jack 220 with the voice amplifier 240 by mechanical movement if the ear jack 220 of the battery charger 200 is connected with the ear jack 120 of the cellular phone 100 .
  • a microcomputer 38 shown in FIG. 4 senses whether the communication port 150 of the cellular phone 100 is connected with the communication port 250 . If the communication port 150 of the cellular phone 100 is connected with the communication port 250 , the microcomputer 38 can control the selector 210 to connect the communication port 250 with the voice amplifier 240 .
  • a communication port separately mounted in the cellular phone in addition to a charging terminal of the battery of the cellular phone may be used as the communication ports 150 and 250 .
  • the communication ports 150 and 250 include a charging terminal for charging the battery of the cellular phone, a voice signal transmitting terminal for transmitting the voice signal, and a sensing terminal for sensing whether the communication ports are connected with each other.
  • the selector 210 , the voice amplifier 240 , and the speaker 230 are designed to be driven by the direct current voltage converted to charge the battery of the cellular phone as shown in FIG. 4 .
  • the battery charger may further include a decoder and a digital-to-analog converter to reproduce and process data stored in the memory 260 .
  • a decoder and a digital-to-analog converter to reproduce and process data stored in the memory 260 .
  • the ear jack 220 , the voice amplifier 240 , and the speaker 230 may only be provided to listen to music during charging the battery.
  • the communication port 250 , the voice amplifier 240 , and the speaker 230 may only be provided.
  • MP3 files are reproduced by an MP3 unit (microcomputer) 160 , a decoder 130 , and a digital-to-analog converter 140 . That is, the MP3 files are stored in a multimedia card (MMC) of the cellular phone 100 . After the MP3 files are reproduced in the microcomputer 160 , the MP3 files are transmitted to the digital-to-analog converter 140 . The digital-to-analog converter 140 converts the reproduced MP3 digital signal into an analog signal. Thus, it is possible to listen to the MP3 music through either a speaker of the cellular phone 100 or an ear phone connected with the ear jack 120 of the cellular phone 100 .
  • MMC multimedia card
  • the analog MP3 music signal converted by the digital-to-analog converter 140 is transmitted to the voice amplifier 240 of the battery charger 200 through the ear jacks 120 and 220 .
  • the analog signal is amplified by the voice amplifier 240 and then output through a speaker 230 of the battery charger 200 .
  • the analog MP3 music signal is transmitted to the voice amplifier 240 of the battery charger 200 through the communication port 150 of the cellular phone 100 and the communication port 250 of the battery charger 200 .
  • the analog MP3 music signal is then amplified by the voice amplifier 240 and then output through the speaker 230 .
  • the selector 210 automatically connects the ear jack 220 with the voice amplifier 240 . If the communication ports 150 and 250 are connected with each other, the selector 210 connects the communication port 250 with the voice amplifier 240 . If the communication ports 150 and 250 are connected with each other and the ear jacks are also connected with each other, the selector 210 first connects the ear jack 220 with the voice amplifier 240 .
  • the voice signal is transmitted to the voice amplifier 240 through the ear jacks 120 and 220 .
  • the transmitted signal is amplified by the voice amplifier 240 and then output to the speaker 230 .
  • the communication port 150 of the cellular phone 100 is connected with the communication port 250 of the battery charger 200 via stereo line, so that the voice signal is transmitted to the voice amplifier 240 via the stereo line.
  • the transmitted signal is amplified by the voice amplifier 240 and then output to the speaker 230 .
  • the MP3 files stored in an MMC 170 within the cellular phone 100 may be reproduced.
  • the MP3 files stored in a flash memory 260 within the battery charger 200 may be reproduced.
  • a switch 180 provided in the cellular phone 100 may be selected to reproduce the MP3 files.
  • the MP3 files stored in the MMC 170 of the cellular phone 100 may be stored in the flash memory 260 of the battery charger 200 .
  • the MP3 files of the battery charger 200 may be stored in the MMC 170 of the cellular phone 100 .
  • the MP3 files move or the MP3 files stored in the battery charger 200 are reproduced, data transmission is performed through the communication ports 150 and 250 .
  • the reproduced voice signal is transmitted through the ear jacks 120 and 220 if the ear jacks 120 and 220 are connected with each other.
  • the reproduced voice signal is transmitted through the communication ports 150 and 250 if the ear jacks 120 and 220 are not connected with each other.
  • the MP3 files stored in the cellular phone 100 or the battery charger 200 can be reproduced to listen to music, and at the same time a telephone conversation is possible through a microphone (not shown) of the cellular phone 100 and the speaker 230 of the battery charger 230 if a speaker phone mode is selected in the cellular phone 100 .
  • the battery charger for a cellular phone having a speaker according to the present invention, it is possible to listen to music through the speaker of the battery charger and conduct a telephone conversation, whether or not the cellular phone battery is charging. Since the battery charger is provided with the memory, the MP3 files can be stored in the memory.
  • the battery charger for a cellular phone, having a speaker according to the present invention has the following advantages.
  • the battery charger for a cellular phone having a speaker according to the present invention is provided with the memory, the voice amplifier and the speaker in addition to the basic charging circuit. Accordingly, the MP3 music of the cellular phone can down-up load in the battery charger.
  • the music files can be reproduced through the speaker mounted in the cellular phone, it is possible to listen to music through the cellular phone in a wide space in the same manner as an audiocassette. Stereo sound may be enjoyed by mounting two speakers.

Abstract

A battery charger for a cellular phone, having a speaker includes an ear jack connected to an ear jack of the cellular phone, for transmitting a voice signal of the cellular phone to the battery charger, a voice amplifier for amplifying the voice signal from the ear jack, and a speaker for converting the voice signal output from the voice amplifier into voice. The battery charger for a cellular phone, having a speaker further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted(connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a battery charger for a cellular phone, and more particularly, to a battery charger for a cellular phone, having a speaker which can play music to a listener and enable a telephone conversation in a speaker phone mode during charging the cellular phone.
2. Background of the Related Art
Generally, a battery charger for a cellular phone charges a battery through a connection terminal at the rear of the battery in a state that the battery is only inserted into the battery charger or the cellular phone having the battery is inserted into the battery charger.
FIG. 1 is a perspective view illustrating a related art battery charger for a cellular phone, FIG. 2 is a front view illustrating a related art battery charger into which a cellular phone is inserted, FIG. 3 shows a side view and a rear view of a related art battery charger, and FIG. 4 is a block diagram illustrating a related art battery charger for a cellular phone.
As shown in FIG. 1, the related art battery charger for a cellular phone includes a main body 5 provided with a charging terminal 11 to support the cellular phone when the cellular phone in inserted into the main body 5. Accordingly, if the cellular phone is inserted into the battery charger, a charging terminal 9 of a battery is connected with the charging terminal 11 of the battery charger to charge the battery of the cellular phone as shown in FIGS. 2 and 3.
Referring to FIG. 4, the related art battery charger for a cellular phone includes a filter 20 for eliminating noise of an externally input commercial alternating current voltage of 100-220V, a rectifying and sudden current restricting circuit 22 for converting the alternating current voltage having no noise into a direct current voltage and protecting an internal circuit from sudden variation of voltage and current, a switching and over current protecting circuit 24 for switching the direct current voltage output from the rectifying and sudden current restricting circuit 22 and preventing flow of the over current from occurring, a rectifying circuit 26 for rectifying again the voltage output from the switching and over current protecting circuit 24 to supply more stable direct current voltage, a feedback circuit 30 and a constant voltage integrated circuit 32 for sensing the output voltage of the rectifying circuit 26, and a microcomputer 38 and an output adjusting circuit 34 for controlling the operation of the battery charger.
The operation of the aforementioned battery charger for a cellular phone will now be described.
An external commercial power source becomes a direct current voltage state through the filter 20 and the rectifying and sudden current restricting circuit 22. Thus, the direct current voltage is output through the switching over current protecting circuit 24. The direct current voltage is rectified again by the rectifying circuit 26 so as to be supplied to the battery of the cellular phone as a stable direct current voltage, thereby charging the battery.
The microcomputer 38 senses an output terminal of the rectifying circuit 26 through the feedback circuit 30 and the constant voltage integrated circuit 32. The microcomputer 38 also controls the direct current voltage supplied to the battery through the output adjusting circuit 34, thereby outputting a constant voltage.
Furthermore, the microcomputer 38 senses a temperature of the battery so that the battery is charged only at a constant temperature. The microcomputer 38 also informs a user through a light emitting diode (LED) whether the battery is charging.
However, the related art battery charger for a cellular phone has a drawback in that it is only used for charging the battery of the cellular phone. Accordingly, it is impossible to listen to music during charging the battery of the cellular phone in even case that the cellular phone is designed to play MP3 music. Since it is possible to listen to music in only a standby state of the cellular phone after charging the battery, the battery is consumed quickly, thereby reducing call/standby time.
SUMMARY OF THE INVENTION
Accordingly, the present invention is directed to a battery charger for a cellular phone, having a speaker that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a battery charger for a cellular phone, having a speaker which can play music to a listener and enable a telephone conversation in a speaker phone mode during charging the cellular phone.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a battery charger for a cellular phone, having a speaker according to the present invention includes an ear jack connected to an ear jack of the cellular phone, for transmitting a voice signal of the cellular phone to the battery charger, a voice amplifier for amplifying the voice signal from the ear jack, and a speaker for converting the voice signal output from the voice amplifier into voice.
The battery charger for a cellular phone, having a speaker according to the present invention further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted (connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.
In addition, the battery charger for a cellular phone, having a speaker according to the present invention further includes a memory for storing a music signal input from the communication port.
Preferably, the selector connects the ear jack with the voice amplifier if the ear jack of the cellular phone is connected with the ear jack of the battery charger, while the selector connects the communication port with the voice amplifier if the communication port of the cellular phone is connected with the communication port of the battery charger.
In another aspect, a battery charger for a cellular phone, having a speaker according to the present invention includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted (connected) to the battery charger, for mutually transmitting a voice signal, a voice amplifier for amplifying the voice signal from the communication port, and a speaker for converting the voice signal output from the voice amplifier into voice.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
In the drawings:
FIG. 1 is a perspective view illustrating a related art battery charger for a cellular phone;
FIG. 2 is a front view illustrating a related art battery charger into which a cellular phone is inserted;
FIG. 3 shows a side view and a rear view of a related art battery charger;
FIG. 4 is a block diagram illustrating a related art battery charger for a cellular phone;
FIG. 5a is a front view illustrating a cellular phone in which a general ear jack can be used;
FIG. 5b is a bottom view of the cellular phone of FIG. 5a;
FIG. 6a is a front view illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention;
FIG. 6b is a partially enlarged view of a portion A of FIG. 6a; and
FIG. 7 is a block diagram illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
FIG. 5a is a front view illustrating a cellular phone in which a general ear jack can be used, FIG. 5b is a bottom view of the cellular phone of FIG. 5a, FIG. 6a is a front view illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention, FIG. 6b is a partially enlarged view of a portion A of FIG. 6a, and FIG. 7 is a block diagram illustrating a battery charger for a cellular phone, having a speaker in accordance with the present invention.
The battery charger for a cellular phone, having a speaker according to the present invention further includes the following configuration in a state that circuits for charging the battery of the cellular phone are provided as shown in FIG. 4.
That is, as shown in FIGS. 6a, 6b and 7, the battery charger for a cellular phone, having a speaker includes an ear jack 220 for transmitting a voice signal of a cellular phone 100 to a battery charger 200 through an ear jack 120 of the cellular phone 100, a communication port 250 connected to a communication port 150 of the cellular phone 100 when the cellular phone 100 is inserted (connected) to the battery charger 200, for mutually transmitting the voice signal of the cellular phone 100, and a memory 260 for storing a music signal from the cellular phone 100 through the communication port 250. The battery charger further includes a selector 210 for selecting the voice signal from the ear jack 220 or the voice signal from the communication port 250 in accordance with insertion of the cellular phone 100 into the battery charger 200, a voice amplifier 240 for amplifying the voice signal selected by the selector 210, and a speaker 230 for converting the voice signal output from the voice amplifier 240 into voice.
The selector 210 connects the ear jack 220 with the voice amplifier 240 by mechanical movement if the ear jack 220 of the battery charger 200 is connected with the ear jack 120 of the cellular phone 100. A microcomputer 38 shown in FIG. 4 senses whether the communication port 150 of the cellular phone 100 is connected with the communication port 250. If the communication port 150 of the cellular phone 100 is connected with the communication port 250, the microcomputer 38 can control the selector 210 to connect the communication port 250 with the voice amplifier 240.
A communication port separately mounted in the cellular phone in addition to a charging terminal of the battery of the cellular phone may be used as the communication ports 150 and 250. The communication ports 150 and 250 include a charging terminal for charging the battery of the cellular phone, a voice signal transmitting terminal for transmitting the voice signal, and a sensing terminal for sensing whether the communication ports are connected with each other.
Furthermore, the selector 210, the voice amplifier 240, and the speaker 230 are designed to be driven by the direct current voltage converted to charge the battery of the cellular phone as shown in FIG. 4.
The battery charger may further include a decoder and a digital-to-analog converter to reproduce and process data stored in the memory 260. Thus, it is possible to listen to music in even case that the battery charger is not connected with the cellular phone.
In another embodiment, the ear jack 220, the voice amplifier 240, and the speaker 230 may only be provided to listen to music during charging the battery. In yet another alternative, the communication port 250, the voice amplifier 240, and the speaker 230 may only be provided.
The operation of the aforementioned battery charger for a cellular phone, having a speaker according to the present invention will be described.
MP3 files are reproduced by an MP3 unit (microcomputer) 160, a decoder 130, and a digital-to-analog converter 140. That is, the MP3 files are stored in a multimedia card (MMC) of the cellular phone 100. After the MP3 files are reproduced in the microcomputer 160, the MP3 files are transmitted to the digital-to-analog converter 140. The digital-to-analog converter 140 converts the reproduced MP3 digital signal into an analog signal. Thus, it is possible to listen to the MP3 music through either a speaker of the cellular phone 100 or an ear phone connected with the ear jack 120 of the cellular phone 100.
Furthermore, when a user connects the ear jack 120 of the cellular phone 100 with the car jack 220 of the battery charger the analog MP3 music signal converted by the digital-to-analog converter 140 is transmitted to the voice amplifier 240 of the battery charger 200 through the ear jacks 120 and 220. The analog signal is amplified by the voice amplifier 240 and then output through a speaker 230 of the battery charger 200.
When the battery charger 200 is connected to the cellular phone 100 to charge the cellular phone 100 but without the car jack 220 being connected, the analog MP3 music signal is transmitted to the voice amplifier 240 of the battery charger 200 through the communication port 150 of the cellular phone 100 and the communication port 250 of the battery charger 200. The analog MP3 music signal is then amplified by the voice amplifier 240 and then output through the speaker 230.
If the ear jack 220 of the battery charger 200 is connected with the car jack 120 of the cellular phone 100, the selector 210 automatically connects the ear jack 220 with the voice amplifier 240. If the communication ports 150 and 250 are connected with each other, the selector 210 connects the communication port 250 with the voice amplifier 240. If the communication ports 150 and 250 are connected with each other and the ear jacks are also connected with each other, the selector 210 first connects the ear jack 220 with the voice amplifier 240.
Accordingly, if the ear jack 120 of the cellular phone 100 is connected with the car jack 220 of the battery charger 200, the voice signal is transmitted to the voice amplifier 240 through the ear jacks 120 and 220. The transmitted signal is amplified by the voice amplifier 240 and then output to the speaker 230. If the ear jack 120 of the cellular phone 100 is separated from the car jack 220 of the battery charger 200, the communication port 150 of the cellular phone 100 is connected with the communication port 250 of the battery charger 200 via stereo line, so that the voice signal is transmitted to the voice amplifier 240 via the stereo line. The transmitted signal is amplified by the voice amplifier 240 and then output to the speaker 230.
The MP3 files stored in an MMC 170 within the cellular phone 100 may be reproduced. Alternatively, the MP3 files stored in a flash memory 260 within the battery charger 200 may be reproduced. A switch 180 provided in the cellular phone 100 may be selected to reproduce the MP3 files.
Furthermore, the MP3 files stored in the MMC 170 of the cellular phone 100 may be stored in the flash memory 260 of the battery charger 200. On the contrary, the MP3 files of the battery charger 200 may be stored in the MMC 170 of the cellular phone 100.
When the MP3 files move or the MP3 files stored in the battery charger 200 are reproduced, data transmission is performed through the communication ports 150 and 250. The reproduced voice signal is transmitted through the ear jacks 120 and 220 if the ear jacks 120 and 220 are connected with each other. The reproduced voice signal is transmitted through the communication ports 150 and 250 if the ear jacks 120 and 220 are not connected with each other.
Moreover, in the present invention, the MP3 files stored in the cellular phone 100 or the battery charger 200 can be reproduced to listen to music, and at the same time a telephone conversation is possible through a microphone (not shown) of the cellular phone 100 and the speaker 230 of the battery charger 230 if a speaker phone mode is selected in the cellular phone 100.
In the battery charger for a cellular phone, having a speaker according to the present invention, it is possible to listen to music through the speaker of the battery charger and conduct a telephone conversation, whether or not the cellular phone battery is charging. Since the battery charger is provided with the memory, the MP3 files can be stored in the memory.
As aforementioned, the battery charger for a cellular phone, having a speaker according to the present invention has the following advantages.
First, the battery charger for a cellular phone, having a speaker according to the present invention is provided with the memory, the voice amplifier and the speaker in addition to the basic charging circuit. Accordingly, the MP3 music of the cellular phone can down-up load in the battery charger.
Second, since the music files can be reproduced through the speaker mounted in the cellular phone, it is possible to listen to music through the cellular phone in a wide space in the same manner as an audiocassette. Stereo sound may be enjoyed by mounting two speakers.
Third, it is possible to conduct a telephone conversation through the speaker mounted in the battery charger in a speaker phone mode during charging the cellular phone.
Finally, since it is possible to listen to music and conduct ) a telephone conversation during charging the cellular phone, it is possible to prevent call/standby time from being reduced due to battery consumption caused by reproduction of music and the telephone conversation in a state that the cellular phone is separated from the battery charger after charging the cellular phone.
The foregoing embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of apparatuses. The description of the present invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art.

Claims (26)

1. A charger for a cellular phone, comprising:
a digital-to-analog converter configured to receive an audio signal in digital format from the cellular phone and output an analog audio signal, wherein the digital format comprises MP3 encoding;
an amplifier configured to receive the analog audio signal from the digital-to-analog converter and amplify the analog audio signal received from a cellular phone; and
a speaker configured to receive the analog audio signal from the amplifier.
2. The charger of claim 1, wherein the audio signal received from the cellular phone is coupled to the charger via an ear jack.
3. The charger of claim 1, wherein the audio signal received from the cellular phone is coupled to the charger via a stereo output line.
4. The charger of claim 1, further comprising a microprocessor configured to control an audio signal coupled to the audio amplifier.
5. The charger of claim 1, wherein the digital format comprises MP3 encoding.
6. The charger of claim 1, further comprising a memory device configured to store a digital audio signal.
7. The charger of claim 6, further comprising an input/output port configured to transfer a digital file between the memory device and the cellular phone.
8. A cellular phone system for a communications network, comprising:
a cellular phone;
a charger configured to receive and charge the cellular phone, wherein the charger comprises:
a digital-to-analog converter configured to receive a digital audio signal from the cellular phone and output an analog audio signal, wherein the digital audio signal is in a MP3 format;
an amplifier configured to receive and amplify the analog audio signal from the cellular phone system digital-to-analog converter; and
a speaker configured to convert the analog audio signal into audible sound.
9. The cellular phone system of claim 8, wherein the audio signal from the cellular phone is coupled to the charger via an ear jack.
10. The cellular phone system of claim 8, wherein the audio signal from the cellular phone is coupled to the charger via a stereo output line.
11. The cellular phone system of claim 8, further comprising a microprocessor configured to switch an audio signal to the audio amplifier.
12. The cellular phone system of claim 8, wherein the digital audio signal is in a MP3 format.
13. The cellular phone system of claim 8, wherein the charger further comprises a memory device configured to store a digital audio signal.
14. The cellular phone system of claim 13, further comprising an input/output port configured to transfer data between the memory device of the charger and the cellular telephone.
15. A mobile phone battery charger, comprising:
a charger ear jack configured to be connected to a mobile phone ear jack;
a charger communication port configured to be connected to a mobile phone communication port;
an audio signal amplifier configured to receive an audio signal from said charger ear jack and said charger communication port; and
a speaker configured to be driven by an audio signal from said audio signal amplifier.
16. The mobile phone battery charger of claim 15, further comprising a selector configured to selectively connect either said charger communication port or said charger ear jack to said audio signal amplifier.
17. The mobile phone battery charger of claim 6 16, further comprising a memory configured to store an audio signal from said charger communication port.
18. The mobile phone battery charger of claim 6 16, wherein said selector is configured to connect said charger ear jack with said audio signal amplifier if said charger ear jack is coupled to the mobile phone ear jack.
19. The mobile phone battery charger of claim 6 16, wherein said selector connects said charger communication port with said audio amplifier if said charger communication port is coupled to the mobile phone communication port.
20. The mobile phone battery charger of claim 6 16, wherein said charger communication port comprises a charger charging terminal configured to couple to a mobile phone charging terminal and a charger audio signal terminal configured to couple to a mobile phone audio signal terminal.
21. The mobile phone battery charger of claim 20, wherein said charger communication port further comprises a sensing terminal configured to sense whether the charger communication port is coupled to the mobile phone communication port.
22. The mobile phone battery charger of claim 15, wherein said audio signal amplifier is configured to receive power from said mobile phone battery charger.
23. A mobile phone battery charger, comprising:
a charger communication port configured to be connected to a mobile phone communication port, and further configured to convey an audio signal to or from the mobile phone communication port;
a memory coupled to the charger communication port configured to store an audio signal;
an audio amplifier configured to receive and amplify an audio signal from the mobile phone communication port or from the memory; and
a speaker configured to be driven by an audio signal from said audio signal amplifier.
24. The mobile phone battery charger of claim 23, wherein said charger communication port comprises a charger charging terminal configured to couple power to the mobile phone battery and a charger transmitting terminal configured to couple an audio signal between said mobile phone battery charger and the mobile phone.
25. The mobile phone battery charger of claim 24, wherein said charger communication port further comprises a sensing terminal configured to sense when said charger communication port is coupled to a mobile phone communication port.
26. The mobile phone battery charger of claim 23, wherein said audio signal amplifier is configured to be powered by said mobile phone battery charger.
US11/373,869 1999-12-30 2006-03-13 Battery charger for cellular phone, having speaker Expired - Lifetime USRE42062E1 (en)

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KR1019990066115A KR100694414B1 (en) 1999-12-30 1999-12-30 Mobile station
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Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7187947B1 (en) 2000-03-28 2007-03-06 Affinity Labs, Llc System and method for communicating selected information to an electronic device
JP2002199062A (en) * 2000-12-25 2002-07-12 Hitachi Ltd Portable terminal equipment
CA2463922C (en) 2001-06-27 2013-07-16 4 Media, Inc. Improved media delivery platform
JP2003079061A (en) * 2001-08-30 2003-03-14 Yamaha Corp Charger for mobile audio device and audio system
US20030127176A1 (en) * 2001-09-12 2003-07-10 Shin-Etsu Chemical Co., Ltd. Optical device, optical isolator and method for producing the same
KR100433493B1 (en) * 2002-01-03 2004-05-31 이중회 A portable audio system using handphone
US20050085276A1 (en) * 2002-03-20 2005-04-21 Takuro Yamaguchi Speaker system
US6591085B1 (en) * 2002-07-17 2003-07-08 Netalog, Inc. FM transmitter and power supply/charging assembly for MP3 player
US20050014536A1 (en) * 2003-07-08 2005-01-20 Jeff Grady Modular adaptor assembly for personal digital appliance
US20070086724A1 (en) * 2002-07-17 2007-04-19 Jeff Grady Interface systems for portable digital media storage and playback devices
MXPA05003691A (en) 2002-10-07 2005-11-17 James Hardie Int Finance Bv Durable medium-density fibre cement composite.
KR100555901B1 (en) 2003-02-18 2006-03-03 삼성전자주식회사 Mobile apparatus having function for palying multi-media and method there of
US20050077869A1 (en) * 2003-10-14 2005-04-14 Yueh Wen Hsiang Combinational charger
KR20050036170A (en) * 2003-10-15 2005-04-20 삼성전자주식회사 Charger/cradle combination device for portable telephone
US7998571B2 (en) 2004-07-09 2011-08-16 James Hardie Technology Limited Composite cement article incorporating a powder coating and methods of making same
TW200610363A (en) * 2004-09-03 2006-03-16 Inventec Appliances Corp Device and method for playing MP3 at mobile phone
KR200381831Y1 (en) * 2005-01-28 2005-04-15 조수환 Mp3 playing and charging system comprising a docking station having an adapter for installing mp3 and a dynamic speaker
PT1689149E (en) 2005-02-03 2009-07-07 Tcl & Alcatel Mobile Phones Mobile terminal with at least two transducers to generate a stereo effect
KR100630204B1 (en) 2005-08-30 2006-10-02 삼성전자주식회사 Device and method for performing multi-tasking in wireless terminal
US7346368B2 (en) * 2005-10-04 2008-03-18 Research In Motion Limited Method and mobile device for operating in different data transfer modes
ATE394009T1 (en) * 2005-10-04 2008-05-15 Research In Motion Ltd METHOD AND MOBILE DEVICE FOR OPERATION IN DIFFERENT DATA TRANSMISSION MODES
US20070080663A1 (en) * 2005-10-11 2007-04-12 Jeff Obering Portable charger with a rechargeable back-up battery
TWM289007U (en) * 2005-10-24 2006-03-21 Inventec Appliances Corp Mobile communication device and charging cradle thereof
US8010728B1 (en) 2005-11-07 2011-08-30 Koninklijke Philips Electronics N.V. Multi-function docking assembly for portable digital media storage and playback device
US7620195B2 (en) * 2005-11-09 2009-11-17 Zounds, Inc. Rechargeable hearing aid
NZ571874A (en) 2006-04-12 2010-11-26 Hardie James Technology Ltd A surface sealed reinforced building element
US8193769B2 (en) * 2007-10-18 2012-06-05 Powermat Technologies, Ltd Inductively chargeable audio devices
US20110099507A1 (en) 2009-10-28 2011-04-28 Google Inc. Displaying a collection of interactive elements that trigger actions directed to an item
EP2600485A4 (en) * 2010-07-27 2014-05-21 Rodriguez Guillermo Amen Communication system
US9294840B1 (en) 2010-12-17 2016-03-22 Logitech Europe S. A. Ease-of-use wireless speakers
US10003873B2 (en) 2011-09-06 2018-06-19 Kohler Co. Speaker and shower
US20130062437A1 (en) 2011-09-06 2013-03-14 Kenneth Scott Hanna Shower and speaker assembly
US10945059B2 (en) 2011-09-06 2021-03-09 Kohler Co. Shower assembly
KR101952260B1 (en) 2012-04-03 2019-02-26 삼성전자주식회사 Video display terminal and method for displaying a plurality of video thumbnail simultaneously
US9368986B1 (en) 2015-03-16 2016-06-14 Joseph Juma Vehicle reminder and charging device
CN108054806A (en) * 2018-01-11 2018-05-18 石李超 A kind of onboard charger with voice control
CN110069738B (en) * 2019-04-26 2022-09-06 福建皮皮跳动科技有限公司 Information processing method and device, terminal equipment and server

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479479A (en) 1991-10-19 1995-12-26 Cell Port Labs, Inc. Method and apparatus for transmission of and receiving signals having digital information using an air link
US5642402A (en) 1994-01-13 1997-06-24 Nokia Mobile Phones Limited Hands free equipment
US5822427A (en) * 1991-10-19 1998-10-13 Cell Port Labs, Inc. Battery charging for a plurality of different cellular telephone
JPH10285254A (en) 1997-04-02 1998-10-23 Kokusai Electric Co Ltd Charger
KR200171103Y1 (en) 1999-09-03 2000-03-15 주식회사인터칩스 Portable terminal suitable for electronic publication system
US6052603A (en) 1995-04-11 2000-04-18 Mold-Tech Plastics Limited Partnership System for interfacing a communication device with a radio for hands-free operation
US6076000A (en) * 1993-05-26 2000-06-13 Lee; Huey Ming Mobile telephone battery charger
US6128185A (en) 1994-08-26 2000-10-03 Nec Corporation Peripheral card locking device
US6226536B1 (en) 1997-05-08 2001-05-01 Nec Corporation Charger capable of controlling alerting means and radio equipment consisting of the charger and a portable radio apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479479A (en) 1991-10-19 1995-12-26 Cell Port Labs, Inc. Method and apparatus for transmission of and receiving signals having digital information using an air link
US5822427A (en) * 1991-10-19 1998-10-13 Cell Port Labs, Inc. Battery charging for a plurality of different cellular telephone
US6076000A (en) * 1993-05-26 2000-06-13 Lee; Huey Ming Mobile telephone battery charger
US5642402A (en) 1994-01-13 1997-06-24 Nokia Mobile Phones Limited Hands free equipment
US6075999A (en) 1994-01-13 2000-06-13 Nokia Mobile Phones, Ltd Hands free equipment
US6128185A (en) 1994-08-26 2000-10-03 Nec Corporation Peripheral card locking device
US6052603A (en) 1995-04-11 2000-04-18 Mold-Tech Plastics Limited Partnership System for interfacing a communication device with a radio for hands-free operation
JPH10285254A (en) 1997-04-02 1998-10-23 Kokusai Electric Co Ltd Charger
US6226536B1 (en) 1997-05-08 2001-05-01 Nec Corporation Charger capable of controlling alerting means and radio equipment consisting of the charger and a portable radio apparatus
KR200171103Y1 (en) 1999-09-03 2000-03-15 주식회사인터칩스 Portable terminal suitable for electronic publication system

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US20010006336A1 (en) 2001-07-05
KR100694414B1 (en) 2007-03-12

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