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JPS5498119A - Buzz erasing circuit unit of television receiver - Google Patents

Buzz erasing circuit unit of television receiver

Info

Publication number
JPS5498119A
JPS5498119A JP507578A JP507578A JPS5498119A JP S5498119 A JPS5498119 A JP S5498119A JP 507578 A JP507578 A JP 507578A JP 507578 A JP507578 A JP 507578A JP S5498119 A JPS5498119 A JP S5498119A
Authority
JP
Japan
Prior art keywords
signal
buzz
becomes
signals
phase
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
JP507578A
Other languages
Japanese (ja)
Inventor
Hiroshi Saito
Tomohiro Adachi
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 JP507578A priority Critical patent/JPS5498119A/en
Priority to US06/003,539 priority patent/US4237485A/en
Publication of JPS5498119A publication Critical patent/JPS5498119A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)

Abstract

PURPOSE: To erase buzz by inverting the polarity of a part of video signals and applying video signals to a sound circuit.
CONSTITUTION: Video detected signal (a) is applied to non-linear circuit 20 and becomes a signal shown in (c). This signal (c) is differetiated by a differentiating circuit and becomes a differentiated signal (d). Differentiated signal (d) is phase-shifted by a phase shifter and becomes signal (e), and further, signal (e) is level-adjusted and becomes signal (f). By the operation above, the phase and the amplitude of signal (f) has the opposite phase and the same amplitude in comparison with buzz signal (b) included in sound detected signals. Then, signal (f) is applied to an operation circuit together with sound detected signals, thereby obtaining sound signals with buzz erased.
COPYRIGHT: (C)1979,JPO&Japio
JP507578A 1978-01-19 1978-01-19 Buzz erasing circuit unit of television receiver Pending JPS5498119A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP507578A JPS5498119A (en) 1978-01-19 1978-01-19 Buzz erasing circuit unit of television receiver
US06/003,539 US4237485A (en) 1978-01-19 1979-01-15 Buzz cancelling system for television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP507578A JPS5498119A (en) 1978-01-19 1978-01-19 Buzz erasing circuit unit of television receiver

Publications (1)

Publication Number Publication Date
JPS5498119A true JPS5498119A (en) 1979-08-02

Family

ID=11601259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP507578A Pending JPS5498119A (en) 1978-01-19 1978-01-19 Buzz erasing circuit unit of television receiver

Country Status (1)

Country Link
JP (1) JPS5498119A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198904A (en) * 1991-02-25 1993-03-30 Comark Communications, Inc. Aural carrier correction system and method
US5430498A (en) * 1994-03-01 1995-07-04 Comark Communications, Inc. Selective intermodulation correction system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198904A (en) * 1991-02-25 1993-03-30 Comark Communications, Inc. Aural carrier correction system and method
US5430498A (en) * 1994-03-01 1995-07-04 Comark Communications, Inc. Selective intermodulation correction system

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