JPS5714263A - Mode discriminating circuit for video tape recorder - Google Patents

Mode discriminating circuit for video tape recorder

Info

Publication number
JPS5714263A
JPS5714263A JP8890880A JP8890880A JPS5714263A JP S5714263 A JPS5714263 A JP S5714263A JP 8890880 A JP8890880 A JP 8890880A JP 8890880 A JP8890880 A JP 8890880A JP S5714263 A JPS5714263 A JP S5714263A
Authority
JP
Japan
Prior art keywords
circuit
speed
output
signal
mode
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
JP8890880A
Other languages
Japanese (ja)
Inventor
Junzo Tokunaka
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 JP8890880A priority Critical patent/JPS5714263A/en
Publication of JPS5714263A publication Critical patent/JPS5714263A/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
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To enable the mode discrimination according to the reference speed at recording, even if the tape run speed is unstable for vari-speed playback, by discriminating the mode from the output detecting the phase relation of horizontal synchronizing signal between adjacent tracks. CONSTITUTION:At the vari-speed playback by a tape run speed other than the reference speed, a circuit 3 detecting the phase relation of the horizontal synchronizing signal between adjacent tracks, and a circuit discriminating the recording mode according to the detected output are provided. For example, a playback video signal from video heads Ha, Hb is applied to a delay switching circuit section 2 to correct the shift in the signal moved with the head between adjacent video tracks via a demodulation circuit 1, and the output is inputted to a phase detection circuit 3 of H signal, the output is applied to a discrimination circuit A and recording mode is discriminated.
JP8890880A 1980-06-30 1980-06-30 Mode discriminating circuit for video tape recorder Pending JPS5714263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8890880A JPS5714263A (en) 1980-06-30 1980-06-30 Mode discriminating circuit for video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8890880A JPS5714263A (en) 1980-06-30 1980-06-30 Mode discriminating circuit for video tape recorder

Publications (1)

Publication Number Publication Date
JPS5714263A true JPS5714263A (en) 1982-01-25

Family

ID=13956034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8890880A Pending JPS5714263A (en) 1980-06-30 1980-06-30 Mode discriminating circuit for video tape recorder

Country Status (1)

Country Link
JP (1) JPS5714263A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143667U (en) * 1989-03-01 1989-10-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143667U (en) * 1989-03-01 1989-10-02

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