FR2179808B1 - - Google Patents
Info
- Publication number
- FR2179808B1 FR2179808B1 FR7312143A FR7312143A FR2179808B1 FR 2179808 B1 FR2179808 B1 FR 2179808B1 FR 7312143 A FR7312143 A FR 7312143A FR 7312143 A FR7312143 A FR 7312143A FR 2179808 B1 FR2179808 B1 FR 2179808B1
- Authority
- FR
- France
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/911—Television signal processing therefor for the suppression of noise
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Picture Signal Circuits (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548472A GB1428963A (en) | 1972-04-04 | 1972-04-04 | Circuits for modifying the dynamic range of signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2179808A1 FR2179808A1 (US06371994-20020416-C00029.png) | 1973-11-23 |
| FR2179808B1 true FR2179808B1 (US06371994-20020416-C00029.png) | 1977-08-19 |
Family
ID=10059948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7312143A Expired FR2179808B1 (US06371994-20020416-C00029.png) | 1972-04-04 | 1973-04-04 |
Country Status (10)
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1469101A (en) * | 1973-03-23 | 1977-03-30 | Dolby Laboratories Inc | Noise reduction systems |
| JPS51114949U (US06371994-20020416-C00029.png) * | 1975-03-13 | 1976-09-17 | ||
| JPS5327010A (en) * | 1976-08-25 | 1978-03-13 | Sony Corp | Signal tran smitter |
| US4114115A (en) * | 1976-11-04 | 1978-09-12 | California Microwave, Inc. | Compandor apparatus |
| JPS5399752A (en) * | 1977-02-11 | 1978-08-31 | Akai Electric | Logarithm compressing device |
| US4291333A (en) * | 1979-05-22 | 1981-09-22 | Fernseh Inc. | Noise filter |
| FR2485838B1 (fr) * | 1980-06-30 | 1986-02-21 | Dolby Ray | Dispositif destine a modifier la plage dynamique de signaux d'entree |
| US4443817A (en) * | 1981-11-25 | 1984-04-17 | Faroudja Y C | Chroma noise reduction system for quadrature modulated color television picture signals |
| JPS5914471U (ja) * | 1982-07-20 | 1984-01-28 | 日本ビクター株式会社 | カラ−映像信号の画質改善回路 |
| JPS5933357U (ja) * | 1982-08-27 | 1984-03-01 | パイオニア株式会社 | 圧縮伸長装置 |
| US4536846A (en) * | 1982-09-20 | 1985-08-20 | Rca Corporation | Distortion reducer for companded analog systems |
| JPS59140727A (ja) * | 1983-01-31 | 1984-08-13 | Fujitsu Ltd | 周波数変換方式 |
| JPS59158684A (ja) * | 1983-03-01 | 1984-09-08 | Victor Co Of Japan Ltd | 映像信号記録再生装置 |
| US4600902A (en) * | 1983-07-01 | 1986-07-15 | Wegener Communications, Inc. | Compandor noise reduction circuit |
| US4602278A (en) * | 1983-11-28 | 1986-07-22 | Rca Corporation | Non-linear processor for video signal vertical detail component |
| IT1177297B (it) * | 1983-11-28 | 1987-08-26 | Rca Corp | Elaboratore di segnali di dettaglio verticale |
| JPS61675U (ja) * | 1984-05-31 | 1986-01-06 | 日本精機株式会社 | 積算計の照明装置 |
| JPS61674U (ja) * | 1984-05-31 | 1986-01-06 | 日本精機株式会社 | 透過照明型カウンタ |
| JPS6184972A (ja) * | 1984-10-03 | 1986-04-30 | Hitachi Ltd | 映像信号の垂直方向エンフアシス回路 |
| GB2189366B (en) * | 1986-04-17 | 1989-12-28 | British Broadcasting Corp | Method and apparatus for conveying information signals |
| US4696044A (en) * | 1986-09-29 | 1987-09-22 | Waller Jr James K | Dynamic noise reduction with logarithmic control |
| JP2542634B2 (ja) * | 1987-09-08 | 1996-10-09 | 株式会社東芝 | アクティブフィルタ型信号調整回路 |
| US5058138A (en) * | 1990-01-16 | 1991-10-15 | Pacesetter Electronics, Inc. | Modular receiver for signals having multiple channels and multiple formats |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117278A (en) * | 1960-12-19 | 1964-01-07 | Minnesota Mining & Mfg | Noise reducing system |
| US3875584A (en) * | 1973-10-17 | 1975-04-01 | Nasa | Television noise reduction device |
-
1972
- 1972-04-04 GB GB1548472A patent/GB1428963A/en not_active Expired
-
1973
- 1973-03-30 IT IT22356/73A patent/IT982707B/it active
- 1973-04-03 DE DE2316540A patent/DE2316540C3/de not_active Expired
- 1973-04-03 SE SE7304688A patent/SE387798B/xx unknown
- 1973-04-04 CH CH482573A patent/CH555118A/xx not_active IP Right Cessation
- 1973-04-04 JP JP3794773A patent/JPS5724689B2/ja not_active Expired
- 1973-04-04 NL NLAANVRAGE7304696,A patent/NL178210C/xx not_active IP Right Cessation
- 1973-04-04 FR FR7312143A patent/FR2179808B1/fr not_active Expired
- 1973-04-04 AT AT296773A patent/AT360597B/de not_active IP Right Cessation
-
1974
- 1974-06-07 US US05/477,205 patent/US3978409A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2316540B2 (de) | 1977-08-18 |
| DE2316540A1 (de) | 1973-10-18 |
| SE387798B (sv) | 1976-09-13 |
| FR2179808A1 (US06371994-20020416-C00029.png) | 1973-11-23 |
| US3978409A (en) | 1976-08-31 |
| ATA296773A (de) | 1980-06-15 |
| NL178210C (nl) | 1986-02-03 |
| GB1428963A (en) | 1976-03-24 |
| CH555118A (de) | 1974-10-15 |
| NL7304696A (US06371994-20020416-C00029.png) | 1973-10-08 |
| JPS4917663A (US06371994-20020416-C00029.png) | 1974-02-16 |
| DE2316540C3 (de) | 1978-04-13 |
| IT982707B (it) | 1974-10-21 |
| AT360597B (de) | 1981-01-26 |
| JPS5724689B2 (US06371994-20020416-C00029.png) | 1982-05-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name |