JPS5556779A - Recording device for video signal - Google Patents

Recording device for video signal

Info

Publication number
JPS5556779A
JPS5556779A JP12971678A JP12971678A JPS5556779A JP S5556779 A JPS5556779 A JP S5556779A JP 12971678 A JP12971678 A JP 12971678A JP 12971678 A JP12971678 A JP 12971678A JP S5556779 A JPS5556779 A JP S5556779A
Authority
JP
Japan
Prior art keywords
video signals
difference
frames
supplied
head
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
JP12971678A
Other languages
Japanese (ja)
Inventor
Eiichi Yokoyama
Kazuo Watanabe
Yoshihiro Kimura
Kunio Takeda
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 JP12971678A priority Critical patent/JPS5556779A/en
Publication of JPS5556779A publication Critical patent/JPS5556779A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To avoid the waste of the tape as well as to ensure an observation in detail when some change occurs by detecting the difference in the vertical correlation of the video signals and then controlling the transfer speed of the recording medium based on the difference of the vertical correlation.
CONSTITUTION: The video signals are supplied through input terminal 11 to be processed, and for example the video signals equivalent to one frame are drawn out with every 1000 frames to be supplied to recording head Hr. At the same time, reproduction head Hp is provided at the position distant by 180 away from head Hr to reproduce the recorded video signals. The reproduced signals are supplied to subtractor circuit 30 to obtain the difference to the input video signals. When detector circuit 31 detects that the difference is under the fixed level, the video signals are drawn out every 1000 frames; while if the difference signal is over the fixed level, switches 16 and 26 are changed over to draw out all frames. Thus the tape speed is increased.
COPYRIGHT: (C)1980,JPO&Japio
JP12971678A 1978-10-20 1978-10-20 Recording device for video signal Pending JPS5556779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12971678A JPS5556779A (en) 1978-10-20 1978-10-20 Recording device for video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12971678A JPS5556779A (en) 1978-10-20 1978-10-20 Recording device for video signal

Publications (1)

Publication Number Publication Date
JPS5556779A true JPS5556779A (en) 1980-04-25

Family

ID=15016436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12971678A Pending JPS5556779A (en) 1978-10-20 1978-10-20 Recording device for video signal

Country Status (1)

Country Link
JP (1) JPS5556779A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393415A (en) * 1980-10-28 1983-07-12 Rca Corporation Time changing system for VTR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393415A (en) * 1980-10-28 1983-07-12 Rca Corporation Time changing system for VTR

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