GR74541B - - Google Patents

Info

Publication number
GR74541B
GR74541B GR64949A GR810164949A GR74541B GR 74541 B GR74541 B GR 74541B GR 64949 A GR64949 A GR 64949A GR 810164949 A GR810164949 A GR 810164949A GR 74541 B GR74541 B GR 74541B
Authority
GR
Greece
Application number
GR64949A
Inventor
Pieter Den Toonder
Pieter J Fondse
Original Assignee
Oak Industries Inc
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 Oak Industries Inc filed Critical Oak Industries Inc
Publication of GR74541B publication Critical patent/GR74541B/el

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
GR64949A 1980-05-14 1981-05-14 GR74541B (el)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/149,707 US4353088A (en) 1980-05-14 1980-05-14 Coding and decoding system for video and audio signals

Publications (1)

Publication Number Publication Date
GR74541B true GR74541B (el) 1984-06-29

Family

ID=22531459

Family Applications (1)

Application Number Title Priority Date Filing Date
GR64949A GR74541B (el) 1980-05-14 1981-05-14

Country Status (13)

Country Link
US (1) US4353088A (el)
JP (1) JPS5717288A (el)
AU (1) AU534856B2 (el)
BR (1) BR8102970A (el)
CA (1) CA1175553A (el)
CH (1) CH654707A5 (el)
DE (1) DE3119015C2 (el)
FR (1) FR2482815B1 (el)
GB (1) GB2077547B (el)
GR (1) GR74541B (el)
IL (1) IL62736A0 (el)
MX (1) MX150241A (el)
NL (1) NL189991C (el)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1155518A (en) * 1979-02-20 1983-10-18 William S.H. Cheung Encoding of information
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
NL8203599A (nl) * 1982-09-17 1984-04-16 Philips Nv Hoofdeinde en ontvanger voor een signaaldistributiesysteem.
US4568974A (en) * 1982-10-28 1986-02-04 Oak Industries Inc. Video scrambling by the application of a variable periodic scrambling waveform
JPS59112783A (ja) * 1982-12-20 1984-06-29 Sony Corp デジタルデ−タ受信機
GB8305858D0 (en) * 1983-03-03 1983-04-07 Indep Broadcasting Authority Noise reduction for video
EP0123505B1 (en) * 1983-04-21 1989-09-27 General Instrument Corporation Scrambling system for television video signal
US4608456A (en) * 1983-05-27 1986-08-26 M/A-Com Linkabit, Inc. Digital audio scrambling system with error conditioning
GB2141905A (en) * 1983-06-20 1985-01-03 Philips Electronic Associated Secure transmission system
US4679078A (en) * 1983-11-15 1987-07-07 Luks Industrial Company Ltd. High security subscription television transmission system
US4636852A (en) * 1984-01-26 1987-01-13 Scientific-Atlanta, Inc. Scrambling and descrambling of television signals for subscription TV
US4599646A (en) * 1984-05-18 1986-07-08 D-Tec Industries, Inc. Method and apparatus for identifying unauthorized or defective converter/decoder boxes in CATV system
US4706284A (en) * 1985-03-15 1987-11-10 Zenith Electronics Corporation Television signal data transmission system
US4817142A (en) * 1985-05-21 1989-03-28 Scientific Atlanta, Inc. Restoring framing in a communications system
US4688246A (en) * 1985-12-20 1987-08-18 Zenith Electronics Corporation CATV scrambling system with compressed digital audio in synchronizing signal intervals
US4864613A (en) * 1986-11-10 1989-09-05 General Instrument Corporation Broadband converter/descrambler interface for cable TV
US4790010A (en) * 1987-02-24 1988-12-06 Zenith Electronics Corporation Enhanced scrambling method and system for TV signals
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
US4916736A (en) * 1988-06-07 1990-04-10 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
JP2810103B2 (ja) * 1989-04-28 1998-10-15 パイオニア株式会社 テレビジョン信号のスクランブル方法
US5058157A (en) * 1989-09-06 1991-10-15 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
US5262874A (en) * 1990-06-06 1993-11-16 Macrovision Corporation Method and apparatus for recording and replaying field-length-modulated video signals
US5153723A (en) * 1991-07-24 1992-10-06 Zenith Electronics Corporation HDTV audio subsystem with timing characteristics compatible with video subsystem
US5710815A (en) * 1995-06-07 1998-01-20 Vtech Communications, Ltd. Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data
CN101527809B (zh) * 2008-03-06 2011-01-26 瑞昱半导体股份有限公司 传输数据内嵌入声音数据的方法
US8786785B2 (en) * 2011-04-05 2014-07-22 Microsoft Corporation Video signature
CN103152543B (zh) * 2012-11-06 2016-08-24 浙江大华技术股份有限公司 一种复合视频的音视频信号的传输方法及其装置

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563448A (en) * 1951-08-07 Subscription type signaling system
US2510046A (en) * 1947-04-18 1950-05-30 Zenith Radio Corp Radio-wire signaling system
US2705740A (en) * 1949-12-14 1955-04-05 Zenith Radio Corp Subscription type signalling system
US3081376A (en) * 1959-03-23 1963-03-12 Zenith Radio Corp Subscription television system
US3184537A (en) * 1960-10-04 1965-05-18 Paramount Pictures Corp Subscription-television system employing suppression of synchronizing signals
GB1028025A (en) * 1962-08-30 1966-05-04 R & R Res Ltd Improvements in or relating to television systems
US3335218A (en) 1964-06-12 1967-08-08 Winston Res Corp Television recording and reproducing apparatus with substitute horizontal sync and multiplexed audio
US3485941A (en) * 1965-04-12 1969-12-23 R & R Research Ltd Television system with modified sync signals and auxiliary timing information
US3530232A (en) * 1966-06-17 1970-09-22 Intern Telemeter Corp Subscription television system
JPS5037972B1 (el) 1969-05-22 1975-12-06
JPS5236593B2 (el) * 1973-08-09 1977-09-16
DE2529728A1 (de) * 1973-10-08 1977-01-20 Standard Elektrik Lorenz Ag Fernsehsystem mit integrierter tonuebertragung
CH575694A5 (el) * 1974-03-15 1976-05-14 Oak Industries Inc
US4024575A (en) * 1974-03-15 1977-05-17 Oak Industries Inc. Catv sine wave coding system
GB1505319A (en) 1975-07-03 1978-03-30 Int Standard Electric Corp Television system
US4081832A (en) * 1976-06-08 1978-03-28 Pay Television Corporation Pay television system, method and apparatus
US4095258A (en) * 1976-10-15 1978-06-13 Blonder-Tongue Laboratories, Inc. Apparatus for decoding scrambled television and similar transmissions
US4163252A (en) * 1976-11-03 1979-07-31 Blonder-Tongue Laboratories, Inc. Subscription television decoder apparatus
US4112464A (en) * 1977-05-11 1978-09-05 Oak Industries Inc. Subscription TV decoder logic system
US4145717A (en) * 1977-05-11 1979-03-20 Oak Industries Inc. Subscription TV audio carrier recovery system
US4215366A (en) * 1977-10-19 1980-07-29 Feature Film Services Subscriber-limited reception television broadcast security encoder-decoder system
GB1602119A (en) * 1977-11-18 1981-11-04 Shiu Hung Cheung Pay-tv system
IL58735A (en) * 1978-12-04 1982-01-31 Oak Industries Inc Subscription television coding system
US4295155A (en) * 1979-06-08 1981-10-13 International Telephone And Telegraph Corporation Gray scale sync video processing system

Also Published As

Publication number Publication date
NL8102351A (nl) 1981-12-01
NL189991C (nl) 1993-09-16
GB2077547B (en) 1984-05-23
CH654707A5 (de) 1986-02-28
MX150241A (es) 1984-04-04
BR8102970A (pt) 1982-02-02
FR2482815A1 (fr) 1981-11-20
JPS5717288A (en) 1982-01-28
DE3119015A1 (de) 1982-02-25
DE3119015C2 (de) 1983-12-08
AU534856B2 (en) 1984-02-16
CA1175553A (en) 1984-10-02
AU7056181A (en) 1981-11-19
FR2482815B1 (fr) 1985-11-29
US4353088A (en) 1982-10-05
GB2077547A (en) 1981-12-16
IL62736A0 (en) 1981-06-29
NL189991B (nl) 1993-04-16

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