JPS5553977A - Buzz noise eliminating device for television picture receiver - Google Patents
Buzz noise eliminating device for television picture receiverInfo
- 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
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
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)
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 |
-
1978
- 1978-10-16 JP JP12754278A patent/JPS5553977A/en active Pending
Cited By (2)
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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