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JPS5676693A - Vtr - Google Patents

Vtr

Info

Publication number
JPS5676693A
JPS5676693A JP15466379A JP15466379A JPS5676693A JP S5676693 A JPS5676693 A JP S5676693A JP 15466379 A JP15466379 A JP 15466379A JP 15466379 A JP15466379 A JP 15466379A JP S5676693 A JPS5676693 A JP S5676693A
Authority
JP
Japan
Prior art keywords
pulse
pll63
synchronizing pulse
horizontal synchronizing
special reproduction
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
JP15466379A
Other languages
Japanese (ja)
Other versions
JPS6324357B2 (en
Inventor
Kenji Hyodo
Masaaki Sakai
Mitsutoshi Magai
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 JP15466379A priority Critical patent/JPS5676693A/en
Publication of JPS5676693A publication Critical patent/JPS5676693A/en
Publication of JPS6324357B2 publication Critical patent/JPS6324357B2/ja
Granted 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 correct a shift in the horizontal frequency of reproduction signal in the special reproduction to be fallen into a permissible range of a receiver and to ensure the correction with high accuracy. CONSTITUTION:At special reproduction, since the heads 1A, 1B scan the video track with a slope, when the heads 1A, 1B cross the guard band, the horizontal synchronizing pulse is not fed to PLL63, and the time constant of PLL63 is selected so that PLL63 is oscillated in the phase of horizontal synchronizing pulse immediately before at the period without the pulse. Thus, from PLL63, the pulse in synchronizing with the horizontal synchronizing pulse can continuously be picked up. In the phase comparison circuit 64, this pulse is compared with the horizontal synchronizing pulse from the inner synchronizing pulse generating circuit 34, and this output is fed to the addition circuit 48 through the special reproduction contact S of the mode switch 65.
JP15466379A 1979-11-29 1979-11-29 Vtr Granted JPS5676693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15466379A JPS5676693A (en) 1979-11-29 1979-11-29 Vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15466379A JPS5676693A (en) 1979-11-29 1979-11-29 Vtr

Publications (2)

Publication Number Publication Date
JPS5676693A true JPS5676693A (en) 1981-06-24
JPS6324357B2 JPS6324357B2 (en) 1988-05-20

Family

ID=15589161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15466379A Granted JPS5676693A (en) 1979-11-29 1979-11-29 Vtr

Country Status (1)

Country Link
JP (1) JPS5676693A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219082A (en) * 1983-05-27 1984-12-10 Hitachi Ltd Magnetic video recording and reproducing device
JPS61140285A (en) * 1984-12-12 1986-06-27 Rohm Co Ltd Servo circuit for vtr

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068732A (en) * 1973-10-22 1975-06-09
JPS5097408U (en) * 1973-12-28 1975-08-14
JPS52101319U (en) * 1976-01-29 1977-08-01

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068732A (en) * 1973-10-22 1975-06-09
JPS5097408U (en) * 1973-12-28 1975-08-14
JPS52101319U (en) * 1976-01-29 1977-08-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219082A (en) * 1983-05-27 1984-12-10 Hitachi Ltd Magnetic video recording and reproducing device
JPS61140285A (en) * 1984-12-12 1986-06-27 Rohm Co Ltd Servo circuit for vtr

Also Published As

Publication number Publication date
JPS6324357B2 (en) 1988-05-20

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