JPS52121306A - Recorded recording medium and its production - Google Patents

Recorded recording medium and its production

Info

Publication number
JPS52121306A
JPS52121306A JP3863476A JP3863476A JPS52121306A JP S52121306 A JPS52121306 A JP S52121306A JP 3863476 A JP3863476 A JP 3863476A JP 3863476 A JP3863476 A JP 3863476A JP S52121306 A JPS52121306 A JP S52121306A
Authority
JP
Japan
Prior art keywords
production
recording medium
recorded recording
vertical synchronizing
integrating value
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.)
Granted
Application number
JP3863476A
Other languages
Japanese (ja)
Other versions
JPS6052627B2 (en
Inventor
Shigeyuki Yoneyama
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP51038634A priority Critical patent/JPS6052627B2/en
Publication of JPS52121306A publication Critical patent/JPS52121306A/en
Publication of JPS6052627B2 publication Critical patent/JPS6052627B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91314—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses

Abstract

PURPOSE:To prevent dubbing by substituting the vertical synchronizing pulses in video signals with the false vertical synchronizing signals which are of not square waveform and whose integrating value is smaller than the integrating value of the vaertical synchronizing pulses.
JP51038634A 1976-04-06 1976-04-06 Recorded recording medium and its production method Expired JPS6052627B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51038634A JPS6052627B2 (en) 1976-04-06 1976-04-06 Recorded recording medium and its production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51038634A JPS6052627B2 (en) 1976-04-06 1976-04-06 Recorded recording medium and its production method

Publications (2)

Publication Number Publication Date
JPS52121306A true JPS52121306A (en) 1977-10-12
JPS6052627B2 JPS6052627B2 (en) 1985-11-20

Family

ID=12530662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51038634A Expired JPS6052627B2 (en) 1976-04-06 1976-04-06 Recorded recording medium and its production method

Country Status (1)

Country Link
JP (1) JPS6052627B2 (en)

Also Published As

Publication number Publication date
JPS6052627B2 (en) 1985-11-20

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