JPS5577043A - Sound signal reproducing circuit - Google Patents

Sound signal reproducing circuit

Info

Publication number
JPS5577043A
JPS5577043A JP14984278A JP14984278A JPS5577043A JP S5577043 A JPS5577043 A JP S5577043A JP 14984278 A JP14984278 A JP 14984278A JP 14984278 A JP14984278 A JP 14984278A JP S5577043 A JPS5577043 A JP S5577043A
Authority
JP
Japan
Prior art keywords
circuit
sound
signals
drop
noise
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
JP14984278A
Other languages
Japanese (ja)
Inventor
Juichi Takashima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14984278A priority Critical patent/JPS5577043A/en
Publication of JPS5577043A publication Critical patent/JPS5577043A/en
Pending legal-status Critical Current

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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE: To output sound reproducing signals without influence of noise at a drop- out generation time by switching the path and the characteristic of a noise reduction circuit according to the level of sound signals reproduced together with video information.
CONSTITUTION: When drop-out of video reproducing signals from disc 11 is detected by video signal filter circuit 13 and drop-out detection circuit 14, the output of circuit 14 is inverted to a high level and is applied to sound cancel circuit 17 and signal compressing Dolby processing circuit 18 which form a noise reduction circuit. Then, circuit 18 cancels sound reproducing signals through circuit 17 in case of a low sound reproducing signal level of disc 11 passing through sound signal filter circuit 15 and compresses and outputs noise signals accompanied with drop-out, which have a level lower than sound signals, together with sound signals only in case of a high sound signal level, thereby obtaining a reproducing output without influence of noise at a drop-out generation time.
COPYRIGHT: (C)1980,JPO&Japio
JP14984278A 1978-12-04 1978-12-04 Sound signal reproducing circuit Pending JPS5577043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14984278A JPS5577043A (en) 1978-12-04 1978-12-04 Sound signal reproducing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14984278A JPS5577043A (en) 1978-12-04 1978-12-04 Sound signal reproducing circuit

Publications (1)

Publication Number Publication Date
JPS5577043A true JPS5577043A (en) 1980-06-10

Family

ID=15483840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14984278A Pending JPS5577043A (en) 1978-12-04 1978-12-04 Sound signal reproducing circuit

Country Status (1)

Country Link
JP (1) JPS5577043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195303A (en) * 1983-04-20 1984-11-06 Matsushita Electric Ind Co Ltd Abnormal signal detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195303A (en) * 1983-04-20 1984-11-06 Matsushita Electric Ind Co Ltd Abnormal signal detector

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