JPS6148313B2 - - Google Patents
Info
- Publication number
- JPS6148313B2 JPS6148313B2 JP53062147A JP6214778A JPS6148313B2 JP S6148313 B2 JPS6148313 B2 JP S6148313B2 JP 53062147 A JP53062147 A JP 53062147A JP 6214778 A JP6214778 A JP 6214778A JP S6148313 B2 JPS6148313 B2 JP S6148313B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- amplitude
- component
- frequency
- 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
- 239000002131 composite material Substances 0.000 claims description 17
- 230000000670 limiting effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000000605 extraction Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- 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)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/801,001 US4167749A (en) | 1977-05-26 | 1977-05-26 | Noise reduction apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53147434A JPS53147434A (en) | 1978-12-22 |
| JPS6148313B2 true JPS6148313B2 (US20030157376A1-20030821-M00001.png) | 1986-10-23 |
Family
ID=25179935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6214778A Granted JPS53147434A (en) | 1977-05-26 | 1978-05-24 | Signal processor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4167749A (US20030157376A1-20030821-M00001.png) |
| JP (1) | JPS53147434A (US20030157376A1-20030821-M00001.png) |
| DE (1) | DE2822837C2 (US20030157376A1-20030821-M00001.png) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143021A (en) * | 1978-04-28 | 1979-11-07 | Sony Corp | Processing circuit of video signal |
| US4309722A (en) * | 1980-05-27 | 1982-01-05 | Rca Corporation | Video disc player noise reduction circuit |
| US4509080A (en) * | 1982-07-02 | 1985-04-02 | Rca Corporation | Video signal peaking system |
| GB2118007B (en) * | 1982-03-31 | 1985-11-13 | Rca Corp | Adjustable coring circuit |
| GB2118396B (en) * | 1982-03-31 | 1985-09-25 | Rca Corp | Video signal peaking system |
| US4437124A (en) * | 1982-04-30 | 1984-03-13 | Rca Corporation | Dynamic coring circuit |
| US4538236A (en) * | 1982-09-24 | 1985-08-27 | Rca Corporation | Adaptive digital signal coring circuit |
| US4538178A (en) * | 1983-06-24 | 1985-08-27 | Rca Corporation | Digital signal peaking apparatus with controllable peaking level |
| US4573075A (en) * | 1983-06-24 | 1986-02-25 | Rca Corporation | Digital signal coring apparatus with controllable coring threshold level |
| US4536796A (en) * | 1983-08-23 | 1985-08-20 | Rca Corporation | Non-linear dynamic coring circuit for video signals |
| JPH0620304B2 (ja) * | 1985-03-04 | 1994-03-16 | 株式会社東芝 | 動き部分検出回路 |
| US4918633A (en) * | 1985-11-25 | 1990-04-17 | Eastman Kodak Company | Digital image noise reduction method and transmission system |
| JPH0760566B2 (ja) * | 1986-04-08 | 1995-06-28 | ソニー株式会社 | Ｆｍ録再系のノイズ低減回路 |
| US5025316A (en) * | 1989-11-06 | 1991-06-18 | North American Philips Corporation | Video noise reduction system with measured noise input |
| US5799111A (en) * | 1991-06-14 | 1998-08-25 | D.V.P. Technologies, Ltd. | Apparatus and methods for smoothing images |
| DE19925046A1 (de) * | 1999-06-01 | 2001-05-03 | Alcatel Sa | Verfahren und Vorrichtung zur Unterdrückung von Rauschen und Echos |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB685483A (en) * | 1950-06-23 | 1953-01-07 | Gen Electric Co Ltd | Improvements in or relating to television apparatus |
| DE1908247B2 (de) * | 1969-02-19 | 1971-03-04 | Fernseh Gmbh, 6100 Darmstadt | Schaltungsanordnung zur verringerung von stoerungen hoeherer frequenz (rauschen) in breitbandigen elektrischen signalen insbesondere fernsehsignalen |
| US3971064A (en) * | 1971-02-16 | 1976-07-20 | Rca Corporation | Video de-peaking circuit in luminance channel in response to AGC signal |
| US3715477A (en) * | 1971-03-11 | 1973-02-06 | Rca Corp | Video signal noise-limiting apparatus |
| US3872387A (en) * | 1972-09-29 | 1975-03-18 | Zenith Radio Corp | Frequency response modifier for fixed-tuned IF amplifiers |
| JPS5541588B2 (US20030157376A1-20030821-M00001.png) * | 1974-11-21 | 1980-10-24 | ||
| US4009334A (en) * | 1976-03-17 | 1977-02-22 | Eastman Kodak Company | Video noise reduction circuit |
| US4110784A (en) * | 1976-08-30 | 1978-08-29 | Rca Corporation | Noise reduction apparatus |
| US4074321A (en) * | 1976-10-12 | 1978-02-14 | The Magnavox Company | Circuit for separating chroma and luminance information in a composite video signal |
-
1977
- 1977-05-26 US US05/801,001 patent/US4167749A/en not_active Expired - Lifetime
-
1978
- 1978-05-24 DE DE2822837A patent/DE2822837C2/de not_active Expired
- 1978-05-24 JP JP6214778A patent/JPS53147434A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53147434A (en) | 1978-12-22 |
| US4167749A (en) | 1979-09-11 |
| DE2822837C2 (de) | 1987-05-07 |
| DE2822837A1 (de) | 1978-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4718086A (en) | AGC in sound channel of system for processing a scrambled video signal | |
| JPS6148313B2 (US20030157376A1-20030821-M00001.png) | ||
| US4074321A (en) | Circuit for separating chroma and luminance information in a composite video signal | |
| US4198650A (en) | Capacitive-type nonlinear emphasis circuit | |
| JPS6355271B2 (US20030157376A1-20030821-M00001.png) | ||
| EP0103286A2 (en) | Chrominance signal recording and reproducing apparatus | |
| JPH0462631B2 (US20030157376A1-20030821-M00001.png) | ||
| US4068257A (en) | Color video signal recording and/or reproducing system | |
| KR900006265B1 (ko) | 문자신호용 자기기록 재생장치 | |
| US4110784A (en) | Noise reduction apparatus | |
| US5047840A (en) | Luminance signal/chrominance signal separating circuit and a noise reduction circuit using a 3 line logical comb filter | |
| US4316213A (en) | Video processor employing variable amplitude compression of the chrominance component | |
| JPS583479A (ja) | 合成ビデオ信号処理装置 | |
| US4175272A (en) | Video signal processing circuitry for compensating different average levels | |
| EP0086496B1 (en) | Magnetic recording/reproducing apparatus | |
| JPS63287273A (ja) | ビデオ信号処理装置における自動利得制御装置 | |
| US4057826A (en) | Sync responsive systems for video disc players | |
| US4928166A (en) | Apparatus for suppressing noises in a video signal | |
| US4384302A (en) | Composite video signal limiter | |
| CA1048634A (en) | Comb filter for video processing | |
| KR100230258B1 (ko) | 필터의 지연시간 및 흑백 반전을 개선한 비디오 기록매체 복사장치 | |
| US3961135A (en) | Synchronized demodulation system | |
| US3674918A (en) | Method and arrangement for the transmission of synchronizing information to color television apparatus | |
| GB1590359A (en) | Synchronous detector circuits | |
| JPH0779456B2 (ja) | 磁気記録再生装置 |
