JPH02903B2 - - Google Patents
Info
- Publication number
- JPH02903B2 JPH02903B2 JP58502439A JP50243983A JPH02903B2 JP H02903 B2 JPH02903 B2 JP H02903B2 JP 58502439 A JP58502439 A JP 58502439A JP 50243983 A JP50243983 A JP 50243983A JP H02903 B2 JPH02903 B2 JP H02903B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- circuit
- stereo
- input
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 9
- 230000002452 interceptive effect Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
- H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
- H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
- H04H20/49—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Stereo-Broadcasting Methods (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US386374 | 1982-06-08 | ||
| US06/386,374 US4489431A (en) | 1982-06-08 | 1982-06-08 | Signal interference protection circuit for AM stereo receiver |
| PCT/US1983/000906 WO1983004459A1 (en) | 1982-06-08 | 1983-06-07 | Signal interference protection circuit for am stereo receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59500795A JPS59500795A (ja) | 1984-05-04 |
| JPH02903B2 true JPH02903B2 (US20090163788A1-20090625-C00002.png) | 1990-01-09 |
Family
ID=23525326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58502439A Granted JPS59500795A (ja) | 1982-06-08 | 1983-06-07 | Ａｍステレオ受信機用保護回路 |
Country Status (11)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716590A (en) * | 1984-01-17 | 1987-12-29 | Sansui Electric Co., Ltd. | AM stereo transmission method and apparatus |
| US4653095A (en) * | 1986-02-06 | 1987-03-24 | Kahn Leonard R | AM stereo receivers having platform motion protection |
| US5008939A (en) * | 1989-07-28 | 1991-04-16 | Bose Corporation | AM noise reducing |
| US5151939A (en) * | 1990-03-21 | 1992-09-29 | Delco Electronics Corporation | Adaptive audio processor for am stereo signals |
| DE69228624T2 (de) | 1991-04-18 | 1999-07-29 | Bose Corp | Reduktion von hörbaren Rauschen bei Stereo-Empfang |
| DE19630392C2 (de) * | 1996-07-26 | 1998-10-01 | Sgs Thomson Microelectronics | Stereodecoder mit gleitendem Übergang zwischen Stereobetrieb und Monobetrieb |
| US6570500B1 (en) * | 2001-11-09 | 2003-05-27 | Nokia Corporation | Infra-sound surveillance system |
| US8144878B2 (en) | 2006-03-06 | 2012-03-27 | Mediatek Inc. | FM receiver and pilot detector thereof, and method for determining a type of a processed signal |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944749A (en) * | 1972-05-10 | 1976-03-16 | Kahn Leonard R | Compatible AM stereophonic receivers involving sideband separation at IF frequency |
| US4192970A (en) * | 1977-01-31 | 1980-03-11 | Kahn Leonard R | Reduction of adjacent channel interference |
| US4332978A (en) * | 1977-03-21 | 1982-06-01 | The Magnavox Consumer Electronics Co. | Low frequency AM stereophonic broadcast and receiving apparatus |
| US4159398A (en) * | 1977-09-27 | 1979-06-26 | Motorola, Inc. | Stereo presence signal for an AM stereo system |
| US4169968A (en) * | 1978-01-27 | 1979-10-02 | Motorola, Inc. | Noise protection circuit for am stereo cosine correction factor |
| JPS5735440A (en) * | 1980-08-12 | 1982-02-26 | Sony Corp | Mode switching controller for am stereo receiver |
| JPS5780842A (en) * | 1980-11-07 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Pilot signal detecting device |
| US4379208A (en) * | 1980-11-13 | 1983-04-05 | National Semiconductor Corporation | AM Stereo receiver logic |
| US4368356A (en) * | 1981-03-20 | 1983-01-11 | Motorola Inc. | Pilot tone detector utilizing phase deviation signals |
-
1982
- 1982-06-08 US US06/386,374 patent/US4489431A/en not_active Expired - Lifetime
-
1983
- 1983-05-30 MX MX197468A patent/MX152521A/es unknown
- 1983-06-07 JP JP58502439A patent/JPS59500795A/ja active Granted
- 1983-06-07 EP EP83902350A patent/EP0110994B1/en not_active Expired
- 1983-06-07 KR KR1019830002528A patent/KR860001325B1/ko not_active IP Right Cessation
- 1983-06-07 CA CA000429897A patent/CA1196387A/en not_active Expired
- 1983-06-07 DE DE8383902350T patent/DE3379373D1/de not_active Expired
- 1983-06-07 BR BR8307398A patent/BR8307398A/pt not_active IP Right Cessation
- 1983-06-07 WO PCT/US1983/000906 patent/WO1983004459A1/en active IP Right Grant
-
1992
- 1992-02-24 SG SG176/92A patent/SG17692G/en unknown
- 1992-04-09 HK HK256/92A patent/HK25692A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MX152521A (es) | 1985-08-14 |
| BR8307398A (pt) | 1984-05-08 |
| CA1196387A (en) | 1985-11-05 |
| KR840005289A (ko) | 1984-11-05 |
| EP0110994B1 (en) | 1989-03-08 |
| SG17692G (en) | 1992-04-16 |
| DE3379373D1 (en) | 1989-04-13 |
| WO1983004459A1 (en) | 1983-12-22 |
| US4489431A (en) | 1984-12-18 |
| HK25692A (en) | 1992-04-16 |
| EP0110994A4 (en) | 1985-09-16 |
| JPS59500795A (ja) | 1984-05-04 |
| EP0110994A1 (en) | 1984-06-20 |
| KR860001325B1 (ko) | 1986-09-13 |
Similar Documents
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|---|---|---|
| US4018994A (en) | Compatible AM stereophonic receivers | |
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| JPH02903B2 (US20090163788A1-20090625-C00002.png) | ||
| US4159398A (en) | Stereo presence signal for an AM stereo system | |
| US4410762A (en) | Dual mode tone detector circuit | |
| KR880000649B1 (ko) | 다중톤(Tone) 파이롯트 신호 시스템 | |
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| JPS6159592B2 (US20090163788A1-20090625-C00002.png) | ||
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