JPS6276878A - 映像スクランブル信号処理装置 - Google Patents

映像スクランブル信号処理装置

Info

Publication number
JPS6276878A
JPS6276878A JP60214542A JP21454285A JPS6276878A JP S6276878 A JPS6276878 A JP S6276878A JP 60214542 A JP60214542 A JP 60214542A JP 21454285 A JP21454285 A JP 21454285A JP S6276878 A JPS6276878 A JP S6276878A
Authority
JP
Japan
Prior art keywords
signal
level
video signal
capacitor
circuit
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.)
Pending
Application number
JP60214542A
Other languages
English (en)
Japanese (ja)
Inventor
Yoichiro Sato
洋一郎 佐藤
Koichi Minemura
峯村　幸一
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP60214542A priority Critical patent/JPS6276878A/ja
Priority to DE19863632864 priority patent/DE3632864A1/de
Priority to US06/912,849 priority patent/US4725882A/en
Publication of JPS6276878A publication Critical patent/JPS6276878A/ja
Pending legal-status Critical Current

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
    • H04N7/1716—Systems operating in the amplitude domain of the television signal by inverting the polarity of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
JP60214542A 1985-09-30 1985-09-30 映像スクランブル信号処理装置 Pending JPS6276878A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP60214542A JPS6276878A (ja) 1985-09-30 1985-09-30 映像スクランブル信号処理装置
DE19863632864 DE3632864A1 (de) 1985-09-30 1986-09-26 Prozessor fuer verschluesselte videosignale
US06/912,849 US4725882A (en) 1985-09-30 1986-09-29 Scrambled video signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60214542A JPS6276878A (ja) 1985-09-30 1985-09-30 映像スクランブル信号処理装置

Publications (1)

Publication Number Publication Date
JPS6276878A true JPS6276878A (ja) 1987-04-08

Family

ID=16657461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60214542A Pending JPS6276878A (ja) 1985-09-30 1985-09-30 映像スクランブル信号処理装置

Country Status (3)

Country Link
US (1) US4725882A (enExample)
JP (1) JPS6276878A (enExample)
DE (1) DE3632864A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6310991A (ja) * 1986-07-02 1988-01-18 Alps Electric Co Ltd Ｃａｔｖ受信装置
JPS63292790A (ja) * 1987-05-23 1988-11-30 Sony Corp デイスパ−サル信号除去回路
US4951315A (en) * 1988-12-30 1990-08-21 Switsen Henry N Video signal noise evaluation and removal circuit
US5029340A (en) * 1989-05-26 1991-07-02 Pioneer Electronic Corporation CATV terminal unit having an improved descrambling operation
EP0421564B1 (en) * 1989-09-28 1995-06-28 Pioneer Electronic Corporation CATV terminal and video apparatus having a noise eliminating circuit
JP3670649B2 (ja) * 2003-02-14 2005-07-13 株式会社東芝 ウォーターマーク処理装置およびウォーターマーク処理方法
US8698551B2 (en) * 2011-05-13 2014-04-15 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device including a circuit configured to hold an offset voltage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396232A (en) * 1964-07-01 1968-08-06 Zenith Radio Corp Interrogating system for subscription television receivers
US4075660A (en) * 1972-02-18 1978-02-21 Teleglobe Pay-Tv System, Inc. Pay television system with synchronization suppression
US3924059A (en) * 1972-02-18 1975-12-02 Teleglobe Pay Tv System Inc Pay television systems
US4222068A (en) * 1978-11-02 1980-09-09 American Television And Communications Corporation Subscription television apparatus and methods
US4340906A (en) * 1980-05-14 1982-07-20 Oak Industries Inc. Video signal coding by video signal polarity reversal on the basis of brightness level comparison
US4336553A (en) * 1980-05-14 1982-06-22 Oak Industries Method of coding audio and video signals
US4598318A (en) * 1983-06-10 1986-07-01 General Instrument Corporation Video encryption system
EP0129299A3 (en) * 1983-06-20 1986-03-19 Philips Electronics Uk Limited Secure television transmission system

Also Published As

Publication number Publication date
DE3632864C2 (enExample) 1988-01-28
US4725882A (en) 1988-02-16
DE3632864A1 (de) 1987-04-09

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