DE3071112D1 - Communication system with digital signal/noise ratio amplifier apparatus - Google Patents

Communication system with digital signal/noise ratio amplifier apparatus

Info

Publication number
DE3071112D1
DE3071112D1 DE8080301332T DE3071112T DE3071112D1 DE 3071112 D1 DE3071112 D1 DE 3071112D1 DE 8080301332 T DE8080301332 T DE 8080301332T DE 3071112 T DE3071112 T DE 3071112T DE 3071112 D1 DE3071112 D1 DE 3071112D1
Authority
DE
Germany
Prior art keywords
communication system
digital signal
noise ratio
amplifier apparatus
ratio amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8080301332T
Other languages
English (en)
Inventor
Harold Barry Shutterly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of DE3071112D1 publication Critical patent/DE3071112D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • 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
    • H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
DE8080301332T 1979-04-25 1980-04-24 Communication system with digital signal/noise ratio amplifier apparatus Expired DE3071112D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/033,064 US4295223A (en) 1979-04-25 1979-04-25 Digital signal/noise ratio amplifier apparatus for a communication system

Publications (1)

Publication Number Publication Date
DE3071112D1 true DE3071112D1 (en) 1985-10-31

Family

ID=21868379

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080301332T Expired DE3071112D1 (en) 1979-04-25 1980-04-24 Communication system with digital signal/noise ratio amplifier apparatus

Country Status (6)

Country Link
US (1) US4295223A (de)
EP (1) EP0018782B1 (de)
JP (1) JPS55147084A (de)
AU (1) AU537519B2 (de)
CA (1) CA1121275A (de)
DE (1) DE3071112D1 (de)

Families Citing this family (31)

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US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
IE55744B1 (en) * 1982-04-08 1991-01-02 Westinghouse Electric Corp Audio scrambler utilizing an auxiliary channel for synchronizing the descrambler
US5675388A (en) * 1982-06-24 1997-10-07 Cooper; J. Carl Apparatus and method for transmitting audio signals as part of a television video signal
US4551853A (en) * 1982-10-28 1985-11-05 Thomson Csf Apparatus for processing speech in radioelectric transmitter/receiver equipment suitable for transmitting and receiving speech
JPS59115640A (ja) * 1982-12-22 1984-07-04 Nec Corp 秘話信号伝送方式
US4556900A (en) * 1983-05-25 1985-12-03 Rca Corporation Scaling device as for quantized B-Y signal
US4608456A (en) * 1983-05-27 1986-08-26 M/A-Com Linkabit, Inc. Digital audio scrambling system with error conditioning
DE3343307A1 (de) * 1983-11-30 1985-06-05 Blaupunkt-Werke Gmbh, 3200 Hildesheim Verfahren zum verschluesseln und entschluesseln von analogen signalen, sowie schaltungsanordnung zur durchfuehrung des verfahrens
US4742543A (en) * 1983-12-22 1988-05-03 Frederiksen Jeffrey E Video transmission system
GB2182229B (en) * 1985-10-25 1989-10-04 Racal Res Ltd Speech scramblers
US4809274A (en) * 1986-09-19 1989-02-28 M/A-Com Government Systems, Inc. Digital audio companding and error conditioning
US4864613A (en) * 1986-11-10 1989-09-05 General Instrument Corporation Broadband converter/descrambler interface for cable TV
US4777648A (en) * 1986-12-15 1988-10-11 Trw Inc. Line tilt compensation method and apparatus
US4870682A (en) * 1987-02-25 1989-09-26 Household Data Services (Hds) Television scrambling system
US4821097A (en) * 1987-03-05 1989-04-11 General Instrument Corporation Apparatus and method for providing digital audio on the sound carrier of a standard television signal
US4937867A (en) * 1987-03-27 1990-06-26 Teletec Corporation Variable time inversion algorithm controlled system for multi-level speech security
US4922537A (en) * 1987-06-02 1990-05-01 Frederiksen & Shu Laboratories, Inc. Method and apparatus employing audio frequency offset extraction and floating-point conversion for digitally encoding and decoding high-fidelity audio signals
US4839906A (en) * 1988-05-20 1989-06-13 Amaf Industries, Inc. Processor based linked compressor-expander telecommunications system
US5091936A (en) * 1991-01-30 1992-02-25 General Instrument Corporation System for communicating television signals or a plurality of digital audio signals in a standard television line allocation
JP2661404B2 (ja) * 1991-05-21 1997-10-08 日本電気株式会社 携帯電話装置
WO1995029558A1 (en) * 1994-04-20 1995-11-02 Shoot The Moon Products, Inc. Method and apparatus for nesting secondary signals within a television signal
US7715446B2 (en) 1996-04-25 2010-05-11 Digimarc Corporation Wireless methods and devices employing plural-bit data derived from audio information
US5991337A (en) * 1997-11-24 1999-11-23 3Com Corporation Method and apparatus for improving the signal-to-noise ratio of low-magnitude input signals in modems
US6452959B1 (en) 1999-05-28 2002-09-17 Dot Wireless, Inc. Method of and apparatus for generating data sequences for use in communications
KR100424538B1 (ko) * 2001-05-29 2004-03-27 엘지전자 주식회사 이동통신시스템에서의 스크램블링 코드 생성 장치 및 방법
IL143533A0 (en) * 2001-06-03 2002-06-30 Shichor Eliahu An audio signal scrambler for any phone, including cellular phones, employing a unique frame synchroization system
WO2008095731A1 (en) * 2007-02-08 2008-08-14 Nokia Corporation Robust synchronization for time division duplex signal
CA2731426C (en) * 2008-07-30 2018-04-17 Micro Motion, Inc. Data translation system and method
US11411717B2 (en) * 2019-08-05 2022-08-09 Thinkware Corporation Electronic device for speech security with less environmental sound distortion and operating method thereof

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
GB657546A (en) * 1947-11-17 1951-09-19 Egon Nicolas Muller Communication and signal translation systems
GB644932A (en) * 1948-01-16 1950-10-18 Standard Telephones Cables Ltd Improvements in or relating to signal compression and expansion arrangements in electric communication systems
US2605361A (en) * 1950-06-29 1952-07-29 Bell Telephone Labor Inc Differential quantization of communication signals
NL291526A (de) * 1962-04-12
DE1541519B1 (de) * 1966-03-04 1970-05-21 Nippon Electric Co Winkelmodulations-Nachrichtenuebertragungssystem
DE1300968B (de) * 1966-03-08 1969-08-14 Nippon Electric Co Deltamodulations-Nachrichtenuebertragungssystem mit Compandereigenschaften
CH461585A (de) * 1966-08-24 1968-08-31 Ciba Geigy Verfahren und Einrichtung zur Nachrichtenübermittlung
US3500247A (en) * 1968-01-08 1970-03-10 Communications Satellite Corp Non-linear pulse code modulation with threshold selected sampling
CH518658A (de) * 1970-07-07 1972-01-31 Patelhold Patentverwaltungs Un Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen
GB1353693A (en) * 1971-12-02 1974-05-22 Mullard Ltd Privacy transmission system
FR2221880A1 (en) * 1973-03-14 1974-10-11 Radio Diffusion Tv Francaise Analogue signal compression-decompression using supplementary signal - involves sampling analogue signal before compression to produce digitally coded signal
US3902007A (en) * 1973-06-26 1975-08-26 Westinghouse Electric Corp Audio and video plural source time division multiplex for an educational tv system
CA1097794A (en) * 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system
DE2705342C3 (de) * 1977-02-09 1979-11-29 Standard Elektrik Lorenz Ag, 7000 Stuttgart Farbfernsehsystem mit zusätzlicher Übertragung von Tonsignalen auf der hinteren Austastschulter

Also Published As

Publication number Publication date
EP0018782A1 (de) 1980-11-12
EP0018782B1 (de) 1985-09-25
CA1121275A (en) 1982-04-06
JPS55147084A (en) 1980-11-15
AU537519B2 (en) 1984-06-28
US4295223A (en) 1981-10-13
AU5750980A (en) 1980-10-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee