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JPS5664576A - Still noise chasing circuit - Google Patents

Still noise chasing circuit

Info

Publication number
JPS5664576A
JPS5664576A JP13992079A JP13992079A JPS5664576A JP S5664576 A JPS5664576 A JP S5664576A JP 13992079 A JP13992079 A JP 13992079A JP 13992079 A JP13992079 A JP 13992079A JP S5664576 A JPS5664576 A JP S5664576A
Authority
JP
Japan
Prior art keywords
pulse
still
gate
positive
terminal
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
JP13992079A
Other languages
Japanese (ja)
Inventor
Yukio Takeuchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13992079A priority Critical patent/JPS5664576A/en
Priority to GB8033357A priority patent/GB2065413B/en
Priority to DE19803040531 priority patent/DE3040531C2/en
Publication of JPS5664576A publication Critical patent/JPS5664576A/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)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE: To ensure an easy control for the best point on the still screen, by travelling the tape except for the case in which the noise band caused during the reproduction of a still picture is within the expected section and then carrying out an automatic sending of frames at the same time securing the variable phase in the expected section.
CONSTITUTION: The pulse of the video head change over switch SW supplied from the terminal 3 is shaped to the inhibition section pulse like (d) through the mono- multi 12 and the pulse generator 11. On the other hand, the drop-out DO pulse supplied from the terminal 1 is shaped to the positive pulse (c) by the differentiating circuit 9. The positive pulse is sucked up by the diode 13 at the moment of phase coincidence between the positive and negative pulses (c) and (d), and the still input signal (e) to the RSFF5 is produced by the above positive pulse and the still command signal given from the terminal 6 and via the gate 10. Under such phase relation, the DO chasing pulse like (f) is formed by the mono-multi 12 and the pulse generator 2 and through the gate 4 and at the moment of phase coincidence between the positive pulse (c) and the gate pulse like (b). The still signal is obtained at the output of the FF5 by the DO chasing pulse and the still commands signal, and the motor action is inhibited by the output of the gate 8.
COPYRIGHT: (C)1981,JPO&Japio
JP13992079A 1979-10-31 1979-10-31 Still noise chasing circuit Pending JPS5664576A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP13992079A JPS5664576A (en) 1979-10-31 1979-10-31 Still noise chasing circuit
GB8033357A GB2065413B (en) 1979-10-31 1980-10-16 Video tape recorder
DE19803040531 DE3040531C2 (en) 1979-10-31 1980-10-28 Circuit for automatically shifting a noise band to the outside of a reproduced still picture in a video recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13992079A JPS5664576A (en) 1979-10-31 1979-10-31 Still noise chasing circuit

Publications (1)

Publication Number Publication Date
JPS5664576A true JPS5664576A (en) 1981-06-01

Family

ID=15256723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13992079A Pending JPS5664576A (en) 1979-10-31 1979-10-31 Still noise chasing circuit

Country Status (3)

Country Link
JP (1) JPS5664576A (en)
DE (1) DE3040531C2 (en)
GB (1) GB2065413B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191453A (en) * 1984-03-12 1985-09-28 Matsushita Electric Ind Co Ltd Rotary head type magnetic video reproducing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965122A (en) * 1972-10-24 1974-06-24
JPS55151876A (en) * 1979-05-15 1980-11-26 Mitsubishi Electric Corp Magnetic picture recorder/reproducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853824B2 (en) * 1977-12-13 1983-12-01 松下電器産業株式会社 Rotating head type magnetic recording/playback device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965122A (en) * 1972-10-24 1974-06-24
JPS55151876A (en) * 1979-05-15 1980-11-26 Mitsubishi Electric Corp Magnetic picture recorder/reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191453A (en) * 1984-03-12 1985-09-28 Matsushita Electric Ind Co Ltd Rotary head type magnetic video reproducing device

Also Published As

Publication number Publication date
GB2065413A (en) 1981-06-24
DE3040531A1 (en) 1981-05-14
DE3040531C2 (en) 1982-11-04
GB2065413B (en) 1984-05-10

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