JPS5737985A - Method and equipment for processing picture re-recording prevention of magnetic picture recording tape - Google Patents

Method and equipment for processing picture re-recording prevention of magnetic picture recording tape

Info

Publication number
JPS5737985A
JPS5737985A JP11284280A JP11284280A JPS5737985A JP S5737985 A JPS5737985 A JP S5737985A JP 11284280 A JP11284280 A JP 11284280A JP 11284280 A JP11284280 A JP 11284280A JP S5737985 A JPS5737985 A JP S5737985A
Authority
JP
Japan
Prior art keywords
picture
recording
vertical synchronizing
signal
processing
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
JP11284280A
Other languages
Japanese (ja)
Inventor
Shiro Sugimura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11284280A priority Critical patent/JPS5737985A/en
Publication of JPS5737985A publication Critical patent/JPS5737985A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To prevent picture re-recording, by performing a beat processing on the vertical synchronizing signal part of composite picture signals output from a picture apparatus. CONSTITUTION:Composite picture signals output from a picture apparatus are distributed and sent to a mixing circuit 6 and a vertical synchronizing separator circuit 3. Then, the separated vertical synchronizing signal is combined with oscillating signals which vary within a prescribed deviation width and sent from an oscillating circuit 4, at a vertical synchronizing signal processing circuit 5, and the combined signal is sent to the mixing circuit 6. At the mixing circuit 6, both inputs are mixed and a beat processing is performed on the vertical synchronizing signal part of the composite picture signal. This signal becomes a picture re-recording prevention processing composite picture signal and sent to a picture recording terminal 7. Magnetic picture recording tapes formed in this way can be used for reproducing, but cannot be used for picture re-recording because the vertical synchronizing signal makes racings at high speed in case of picture re-recording.
JP11284280A 1980-08-15 1980-08-15 Method and equipment for processing picture re-recording prevention of magnetic picture recording tape Pending JPS5737985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11284280A JPS5737985A (en) 1980-08-15 1980-08-15 Method and equipment for processing picture re-recording prevention of magnetic picture recording tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11284280A JPS5737985A (en) 1980-08-15 1980-08-15 Method and equipment for processing picture re-recording prevention of magnetic picture recording tape

Publications (1)

Publication Number Publication Date
JPS5737985A true JPS5737985A (en) 1982-03-02

Family

ID=14596889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11284280A Pending JPS5737985A (en) 1980-08-15 1980-08-15 Method and equipment for processing picture re-recording prevention of magnetic picture recording tape

Country Status (1)

Country Link
JP (1) JPS5737985A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114611A (en) * 1974-06-19 1976-02-05 Gen Electric
JPS52127322A (en) * 1976-04-19 1977-10-25 Sony Corp Recorded medium and its production

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114611A (en) * 1974-06-19 1976-02-05 Gen Electric
JPS52127322A (en) * 1976-04-19 1977-10-25 Sony Corp Recorded medium and its production

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