JPS5553977A - Buzz noise eliminating device for television picture receiver - Google Patents

Buzz noise eliminating device for television picture receiver

Info

Publication number
JPS5553977A
JPS5553977A JP12754278A JP12754278A JPS5553977A JP S5553977 A JPS5553977 A JP S5553977A JP 12754278 A JP12754278 A JP 12754278A JP 12754278 A JP12754278 A JP 12754278A JP S5553977 A JPS5553977 A JP S5553977A
Authority
JP
Japan
Prior art keywords
signal
output
erasion
circuit
video
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
JP12754278A
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 JP12754278A priority Critical patent/JPS5553977A/en
Priority to US06/003,539 priority patent/US4237485A/en
Publication of JPS5553977A publication Critical patent/JPS5553977A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the high-quality sound reproduction by applying the video signal emerged at the output of the sound detection circuit and the video component erasion signal of the output of the buzz component erasion signal generation circuit to which the level is set previously for erasion in the opposite phase to each other.
CONSTITUTION: Part of the video IF signal is extracted from division point 12, and the phase modulation component is detected 20. The detected phase modulation component receives the band limitation through frequency characteristic correction circuit 21 to be corrected to the necessary characteristics. Furthermore, the compensation is given at amplitude charactristic correction circuit 22 in order to secure the coincidence with the amplitude variation of the video signal level emerging at the output of sound detection circuit 5. Then the video signal emerged at the output of circuit 5 and the video component erasion signal of the output of buzz component erasion signal generation circuit 8 are added together in the opposite phase to each other at compound circuit 9, thus delivering 14 only the aural signal through the mutual negation. In such way, the high-quality spund can be reproduced.
COPYRIGHT: (C)1980,JPO&Japio
JP12754278A 1978-01-19 1978-10-16 Buzz noise eliminating device for television picture receiver Pending JPS5553977A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12754278A JPS5553977A (en) 1978-10-16 1978-10-16 Buzz noise eliminating device for television picture 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
JP12754278A JPS5553977A (en) 1978-10-16 1978-10-16 Buzz noise eliminating device for television picture receiver

Publications (1)

Publication Number Publication Date
JPS5553977A true JPS5553977A (en) 1980-04-19

Family

ID=14962577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12754278A Pending JPS5553977A (en) 1978-01-19 1978-10-16 Buzz noise eliminating device for television picture receiver

Country Status (1)

Country Link
JP (1) JPS5553977A (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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