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JPS55117718A - Video signal recording and reproducing device - Google Patents

Video signal recording and reproducing device

Info

Publication number
JPS55117718A
JPS55117718A JP2420079A JP2420079A JPS55117718A JP S55117718 A JPS55117718 A JP S55117718A JP 2420079 A JP2420079 A JP 2420079A JP 2420079 A JP2420079 A JP 2420079A JP S55117718 A JPS55117718 A JP S55117718A
Authority
JP
Japan
Prior art keywords
instantaneous
information volume
video signal
digital signal
volume
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
JP2420079A
Other languages
Japanese (ja)
Inventor
Masaaki Kobayashi
Kazuji Kobayashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2420079A priority Critical patent/JPS55117718A/en
Publication of JPS55117718A publication Critical patent/JPS55117718A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To improve recording density by varying the instantaneous recording capacity of a memory method composed of a magnetic head and magnetic tape, for example, according to the volume of information that an input video signal has.
CONSTITUTION: A video signal is converted into a digital signal through pulse code modulation circuit 2. Subordinate memory 3 supplies the one-channel digital signal, varying in instantaneous information volume, to magnetic heads 8, 9 and 10 by dividing into three channels. This digital signal, on the other hand, is supplied to information volume detection circuit 4 as well and the instantaneous information volume is converted there into a voltage, for example, to drive capstan motor 12a through capstan motor control circuit 6, thereby making the run speed of magnetic tape 16 correspond to the instantaneous information volume. Namely, the instantaneous information volume is considered to vary. Thus, the recording density can remarkably be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP2420079A 1979-03-01 1979-03-01 Video signal recording and reproducing device Pending JPS55117718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2420079A JPS55117718A (en) 1979-03-01 1979-03-01 Video signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2420079A JPS55117718A (en) 1979-03-01 1979-03-01 Video signal recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS55117718A true JPS55117718A (en) 1980-09-10

Family

ID=12131671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2420079A Pending JPS55117718A (en) 1979-03-01 1979-03-01 Video signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS55117718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189809A (en) * 1983-04-14 1983-11-05 Hitachi Ltd Signal recorder and reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189809A (en) * 1983-04-14 1983-11-05 Hitachi Ltd Signal recorder and reproducer

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