JPS5593390A - Magnetic recording and reproduction unit - Google Patents

Magnetic recording and reproduction unit

Info

Publication number
JPS5593390A
JPS5593390A JP160079A JP160079A JPS5593390A JP S5593390 A JPS5593390 A JP S5593390A JP 160079 A JP160079 A JP 160079A JP 160079 A JP160079 A JP 160079A JP S5593390 A JPS5593390 A JP S5593390A
Authority
JP
Japan
Prior art keywords
signal
output
circuit
horizontal synchronizing
synchronizing signal
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
JP160079A
Other languages
Japanese (ja)
Inventor
Norio Meki
Kenichi Hasegawa
Shigeru Kuriyama
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 JP160079A priority Critical patent/JPS5593390A/en
Publication of JPS5593390A publication Critical patent/JPS5593390A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To output excellent color reproduction signal, by obtaining the logical sum between the horizontal synchronizing signal including the virtual horizontal synchronizing signal obtained from the reproduction signal and the output of the oscillation means in synchronizing drive with the signal, and forming the color burst gate signal from the logical sum output.
CONSTITUTION: The composite luminance signal processing and restoring the reproduction signal from the magnetic head 5 is fed to the horizontal synchronizing signal separation circuit 15 and the horizontal synchronizing signal is outputted to the output. This synchronizing signal is inputted to the delay circuit 22 and also to the phase comparison circuit 33. The circuit 33, variable oscillator 32 and frequency divider 31 constitute the synchronizing oscillator having flywheel effect, and the oscillation frequency is taken the same as the horizontal synchronizing signal to coincidence the color burst signal. The output of the oscillator is fed to one of the gate circuits 30, logical sum is taken with the horizontal synchronizing signal delayed in the circuit 22 by feeding it to another input to output the color burst gate signal rejecting noise at the output of the circuit 30.
COPYRIGHT: (C)1980,JPO&Japio
JP160079A 1979-01-10 1979-01-10 Magnetic recording and reproduction unit Pending JPS5593390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP160079A JPS5593390A (en) 1979-01-10 1979-01-10 Magnetic recording and reproduction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP160079A JPS5593390A (en) 1979-01-10 1979-01-10 Magnetic recording and reproduction unit

Publications (1)

Publication Number Publication Date
JPS5593390A true JPS5593390A (en) 1980-07-15

Family

ID=11505986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP160079A Pending JPS5593390A (en) 1979-01-10 1979-01-10 Magnetic recording and reproduction unit

Country Status (1)

Country Link
JP (1) JPS5593390A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596372U (en) * 1982-07-05 1984-01-17 三洋電機株式会社 Burst re-input circuit
JPS6066590A (en) * 1983-09-21 1985-04-16 Sony Corp Frequency converting circuit of video signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977526A (en) * 1972-11-29 1974-07-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977526A (en) * 1972-11-29 1974-07-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596372U (en) * 1982-07-05 1984-01-17 三洋電機株式会社 Burst re-input circuit
JPS6066590A (en) * 1983-09-21 1985-04-16 Sony Corp Frequency converting circuit of video signal

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