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United States Patent 
[li] 4,336,524  Jun. 22, 1982
 VIDEO DISPLAY PAGER RECEIVER WITH MEMORY
 Inventor: Alfred B. Levine, 2924 Terrace Dr., Chevy Chase, Md. 20015
 Appl. No.: 148,877
 Filed: May 12, 1980
Related U.S. Application Data
 Division of Ser. No. 58,250, Jul. 17, 1979, Pat. No. 4,263,480.
 Int. CI.3 G08B 5/22; H04B 7/24;
 U.S. CI 340/311.1; 179/2 EC;
 Field of Search 340/311, 312; 179/2 E,
179/2 EC; 455/31, 38
 References Cited
U.S. PATENT DOCUMENTS
3,914,692 10/1975 Seaborn 340/311
4,103,107 7/1978 D'Amico et al 340/311
4,145,684 3/1979 Stodolski , 340/311
4,160,240 7/1979 Partipilo 340/311
4,197,526 4/1980 Levine et al 340/311
Primary Examiner—James J. Groody  ABSTRACT
A fully automatic pager system wherein a transmitter station automatically sends out an identifying address code to activate a selected pager receiver in response to a telephone call from a calling party who dials the normal telephone number of the party to be reached. The transmitter station also automatically sends out a message code to the activated receiver in response to a number message subsequently dialed by the calling party. The transmitter station automatically responds to the dialed identifying message and the dialed message from the caller to locate the identify code and the message code to be transmitted that have been previously stored in a memory. At the receiver is provided a memory having a series of pre-stored limited content messages, each of which is selectively retrievable upon the receipt of a message code corresponding to the address of that message in the memory. The received message codes are automatically stored in the receiver, for subsequent retrieval, in the event that the user does not acknowledge receiving that message.
8 Claims, 3 Drawing Figures
VIDEO DISPLAY PAGER RECEIVER WITH
RELATED APPLICATIONS 5
This application is a division of co-pending application Ser. No. 58,250, filed July 17, 1979, now U.S. Pat. No. 4,263,480 issued Apr. 21, 1980.
STATEMENT OF THE INVENTION 10
This invention relates to completely automatically operating pager systems wherein radiant transmissions of limited content messages in coded form are forwarded to selected subscribers from a central station, and the corresponding messages are displayed on the '5 video panel of a portable receiver carried by the subscriber. This invention also relates to improvements in such pager receivers having memories for prestoring such messages, automatic entry of the codes, selective retrieval of messages, and other features. 20
In an earlier U.S. Pat. No. 4,197,526, there is provided an automatically operating pager system wherein a transmitting station automatically receives and trans- 25 mits limited content coded signals from callers, and automatically sends out corresponding messages to remotely located receivers. The pager receivers includes a video display panel for displaying the limited content messages, and a memory for storing the mes- 30 sages for later retrieval and display at the discretion and at the convenience of the user. The page receiver provides for automatic storage of any of a plurality of such received messages, such as call-back telephone numbers, and selective manual or automatic retrieval and 35 video display of such plural messages at the convenience of the user, as well as an audible alert of a paging call, automatic time delayed storage, and other features.
SUMMARY OF THE INVENTION 40
According to the present invention, the transmitter station may comprise a central broadcast station and serve a much greater number of subscribers, at greater distance from the station. It also provides completely automatic operation in paging such subscribers and 45 transmitting messages thereto in response to a much greater number of callers. In a preferred embodiment, each of the callers is automatically instructed to not only inform the central station of the limited message to be sent by dialing or otherwise digitally transmitting the 50 alpha-numeric message on the calling telephone, but is also automatically instructed to digitally identify the desired subscriber, such as by digitally sending the subscriber's telephone number to the central station. At such station the subscriber's page code address is auto- 55 matically looked-up and determined from the received subscriber's telephone number and this page code address is transmitted to activate the selected subscriber's portable page receiver. Additionally at such transmitter station, a message address code corresponding to a 60 call-back number is automatically located, and this address code is also automatically transmitted to the page receiver.
The portable page receiver is provided with a memory containing a series of such limited content messages, 65 such as a plurality of call-back telephone numbers, and each number is stored at a different address in the receiver memory. Therefore upon receiving the transmit
ted message address code from the central transmitter, the selected limited content message is automatically retrieved from the memory and automatically displayed on the video panel of the receiver in real-time when the transmission is received, or is remembered and retrievable at a later time at the convenience or availability of the subscriber.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a functional block diagram showing the automatic operation of the Central Station and transmitter for receiving calls and transmitting limited content messages to selected ones of many pager receivers.
FIG. 2 is a functional block diagram illustrating details of a preferred pager receiver.
FIG. 3 is a functional block diagram illustrating a modification for receiving an entire limited content message.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to FIG. 1, the overall system comprises a common Central Station 12, or stations, that is adapted to receive at random telephone calls from one or many callers 10 who wish to have paged selected ones of the many subscribers to the system. Depending upon the scope of the system, including the number of subscribers, the Central Station is provided with many incoming telephone circuits 11 that can receive calls sequentially or simultaneously from outside callers. At the station 12, there is provided a sufficient number of automatic telephone answering devices 13, connectable to the various phone circuits 12, to accomodate a reasonable number of simultaneously received incoming calls. The telephone answering devices 13 are of conventional construction, and contain prerecorded messages briefly informing the caller about the nature and interactive operation of the system. According to a preferred mode of operation, the caller is first instructed to dial, touch tone, or otherwise send the telephone number of the selected party to be paged, and this seven digit digital number is received and recorded as a digital series of pulses or tones on a magnetic recorder 14 associated with that answering device 13. Following this initial automatic reception of a selected subscriber's phone number, the caller is then automatically instructed by prerecorded message from telephone answering device 13 to then dial, touch tone or send a desired call-back telephone number, or limited message, that the caller wishes to be transmitted to the subscriber. This second seven-digit call-back number, or limited message, is also recorded at the central station at a magnetic recorder 15, that may be combined with recorder 14. Thus the Central Station operation is completely automatic in nature, using prerecorded instructions to each caller, and having the caller then identify the subscriber or called party to be reached by dialing an identifying digital number, and also dialing a second digital number corresponding to a limited content message to be transmitted to that subscriber, e.g., the person carrying the remote portable page receiver.
As will be described, each portable page receiver is activated or selected by the transmitter station automatically sending a unique digital identifying code. The number of digits required for such identify code corresponds to the number of subscribers to the system. Thus if the number of subscribers is only 100 or less, a three