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JPS5593381A - Compensation unit for drop out - Google Patents

Compensation unit for drop out

Info

Publication number
JPS5593381A
JPS5593381A JP159679A JP159679A JPS5593381A JP S5593381 A JPS5593381 A JP S5593381A JP 159679 A JP159679 A JP 159679A JP 159679 A JP159679 A JP 159679A JP S5593381 A JPS5593381 A JP S5593381A
Authority
JP
Japan
Prior art keywords
drop out
carrier
amplitude
compensation
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
JP159679A
Other languages
Japanese (ja)
Inventor
Hiroshi Kitaura
Katsuhiko Yamamoto
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 JP159679A priority Critical patent/JPS5593381A/en
Publication of JPS5593381A publication Critical patent/JPS5593381A/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE: To achieve the compensation of drop out when the demodulator for frequency converter is used for the reproduction, by using the drop out pulse for amplitude control, in the unit recording and reproducing the video signal of TV.
CONSTITUTION: To avoide the effect of distortion of transmission system including recording and reproduction of low band direct FM system, the FM modulation signal is recorded in low carrier with beat down and the signal reproducing it is inputted from the terminal 28. When the drop out is detected at the detector 3 through the absence of carrier, the switching circuit 4 is selected and the signal before 1H is fed to the amplitude limit circuit 41 from the delay line 5. The output pulse of the drop out detector 3 is fed to the amplitude limit circuit 41 to be amplified so that it has the same amplitude as that in other period to avoid the reduction during the period when drop out compensation is made for the amplitude of FM carrier. The inconvenience that the carrier after compensation inputted to the mixer 31 is eliminated at the mixer 31 and SN ratio is extremely deteriorated, can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP159679A 1979-01-10 1979-01-10 Compensation unit for drop out Pending JPS5593381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP159679A JPS5593381A (en) 1979-01-10 1979-01-10 Compensation unit for drop out

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP159679A JPS5593381A (en) 1979-01-10 1979-01-10 Compensation unit for drop out

Publications (1)

Publication Number Publication Date
JPS5593381A true JPS5593381A (en) 1980-07-15

Family

ID=11505877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP159679A Pending JPS5593381A (en) 1979-01-10 1979-01-10 Compensation unit for drop out

Country Status (1)

Country Link
JP (1) JPS5593381A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797788A (en) * 1980-12-10 1982-06-17 Mitsubishi Electric Corp Video recording and reproducing device
FR2538189A1 (en) * 1982-12-16 1984-06-22 Pioneer Electronic Corp FREQUENCY MODULATED SIGNAL DEMODULATION CIRCUIT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797788A (en) * 1980-12-10 1982-06-17 Mitsubishi Electric Corp Video recording and reproducing device
JPS6355275B2 (en) * 1980-12-10 1988-11-01 Mitsubishi Electric Corp
FR2538189A1 (en) * 1982-12-16 1984-06-22 Pioneer Electronic Corp FREQUENCY MODULATED SIGNAL DEMODULATION CIRCUIT

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