FI76465B - Signalbehandlingsanordning. - Google Patents
Signalbehandlingsanordning. Download PDFInfo
- Publication number
- FI76465B FI76465B FI822906A FI822906A FI76465B FI 76465 B FI76465 B FI 76465B FI 822906 A FI822906 A FI 822906A FI 822906 A FI822906 A FI 822906A FI 76465 B FI76465 B FI 76465B
- Authority
- FI
- Finland
- Prior art keywords
- amplifier
- circuit
- comparator
- voltage
- transistor
- Prior art date
Links
- 230000003252 repetitive effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 25
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001052 transient effect Effects 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
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/18—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
- H04N5/185—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
-
- 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
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Television Receiver Circuits (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Processing Of Color Television Signals (AREA)
- Control Of Amplification And Gain Control (AREA)
Claims (7)
1. Signalbehandlingsapparat, som innefattar en kalla (15) för inkommande signaler, en förstärkarkrets (20), som 5 har en första ingäng kopplad till kallan (15) och som har en första förspänningskrets (30) för att alstra likströms-förspänning i förstärkaren, och en förstärkningsregler-krets, som är kopplad tili förstärkaren (20) och som har en andra förspänningskrets (65) för att alstra likströms-10 förspänning i förstärkningsreglerkretsen, vilken apparat är kännetecknad av en komparator (80), som är kopplad tili den första och andra förspänningskretsen för att alstra en utgängsstyrspänning, som representerar skill-naden mellan förstärkarens förspänning och förstärknings-15 reglerkretsens förspänning, vilken styrspänning är kopplad tili signalbehandlingsapparaten.
2. Apparat enligt patentkravet 1, kännetecknad därav, att den första förspänningskretsen innefattar en första strömkälla (30, 32) för att alstra 20 driftsmatningsströiranar med likström för förstärkaren (20), att den andra förspänningskretsen innefattar en andra strömkälla (65, 68) för att alstra driftsmatningsströmmar med likström för förstärkningsreglerkretsen (55), och att komparatorn (80) reagerar för den första och andra 25 spänningen, vilka motsvarande representerar niväerna hos likströmsmatningsströmmarna frän den första och andra strömkällan.
3. Apparat enligt patentkravet 2, kännetecknad därav, att förstärkarkretsen (20) innefattar 30 en differentialförstärkare (26, 28) och den första strömkällan innefattar en första transistor (30) och ett första motständ (32), att förstärkningsreglerkretsen (55) innefattar en differentialförstärkare (60) och den andra strömkällan innefattar en andra transistor (65) och ett andra 35 motständ (68) och att den första och andra spänningen leds frän det första respektive andra moständet. Il
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/296,864 US4376288A (en) | 1981-08-27 | 1981-08-27 | Signal gain control with DC compensation |
| US29686481 | 1981-08-27 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| FI822906A0 FI822906A0 (fi) | 1982-08-20 |
| FI822906L FI822906L (fi) | 1983-02-28 |
| FI76465B true FI76465B (fi) | 1988-06-30 |
| FI76465C FI76465C (sv) | 1988-10-10 |
Family
ID=23143889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI822906A FI76465C (sv) | 1981-08-27 | 1982-08-20 | Signalbehandlingsanordning |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4376288A (sv) |
| JP (1) | JPS5843676A (sv) |
| KR (1) | KR880001928B1 (sv) |
| AT (1) | AT399797B (sv) |
| AU (1) | AU555793B2 (sv) |
| CA (1) | CA1179054A (sv) |
| DE (1) | DE3231848A1 (sv) |
| ES (1) | ES8306949A1 (sv) |
| FI (1) | FI76465C (sv) |
| FR (1) | FR2512301B1 (sv) |
| GB (1) | GB2105537B (sv) |
| IT (1) | IT1152094B (sv) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633320A (en) * | 1984-03-08 | 1986-12-30 | Rca Corporation | Video signal processor with automatic kinescope beam current limiter |
| US4916722A (en) * | 1986-06-26 | 1990-04-10 | Kabushiki Kaisha Toshiba | X-ray image processing apparatus |
| US5703504A (en) * | 1995-12-26 | 1997-12-30 | Motorola | Feedforward adaptive threshold processing method |
| US6480241B1 (en) | 1996-08-27 | 2002-11-12 | Gordon J. Gow Technologies, Inc. | S-video signal loss compensation processing apparatus and method |
| US5784126A (en) * | 1996-08-27 | 1998-07-21 | Gordon J. Gow Technologies, Inc. | S-video signal loss compensation processing apparatus and method |
| US6750920B1 (en) * | 1999-03-16 | 2004-06-15 | Ati International Srl | Method and apparatus for adjusting bias and amplitude of a video signal |
| SE0302156D0 (sv) * | 2003-08-01 | 2003-08-01 | Infineon Technologies Ag | Low-latency DC compensation |
| US8130290B2 (en) * | 2009-06-03 | 2012-03-06 | Himax Imaging, Inc. | Black level compensation circuit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2060192C3 (de) * | 1970-12-08 | 1978-04-13 | Robert Bosch Gmbh, 7000 Stuttgart | Schaltungsanordnung zur verzögerungsfreien Verstärkungssteuerung |
| GB1400427A (en) * | 1971-11-08 | 1975-07-16 | Rca Corp | Video signal processing apparatus |
| JPS5537146B2 (sv) * | 1972-08-28 | 1980-09-26 | ||
| JPS6013327B2 (ja) * | 1975-05-07 | 1985-04-06 | 日本電気株式会社 | 直流制御型出力レベル調整回路 |
| US4044375A (en) * | 1976-08-19 | 1977-08-23 | Rca Corporation | Brightness control apparatus |
| US4197557A (en) * | 1977-05-05 | 1980-04-08 | Rca Corporation | Brightness control circuit employing a closed control loop |
| US4253110A (en) * | 1979-12-14 | 1981-02-24 | Rca Corporation | Automatic kinescope beam current limiter with sequential control modes |
| US4209808A (en) * | 1979-03-26 | 1980-06-24 | Rca Corporation | Stabilized automatic brightness control network in a video signal processing system including an automatic kinescope beam current limiter |
| US4267516A (en) * | 1979-08-03 | 1981-05-12 | Tektronix, Inc. | Common-emitter fT doubler amplifier employing a feed forward amplifier to reduce non-linearities and thermal distortion |
-
1981
- 1981-08-27 US US06/296,864 patent/US4376288A/en not_active Expired - Lifetime
-
1982
- 1982-08-17 GB GB08223609A patent/GB2105537B/en not_active Expired
- 1982-08-17 CA CA000409554A patent/CA1179054A/en not_active Expired
- 1982-08-20 ES ES515146A patent/ES8306949A1/es not_active Expired
- 1982-08-20 FI FI822906A patent/FI76465C/sv not_active IP Right Cessation
- 1982-08-20 AU AU87482/82A patent/AU555793B2/en not_active Ceased
- 1982-08-25 IT IT8222982A patent/IT1152094B/it active
- 1982-08-26 FR FR8214669A patent/FR2512301B1/fr not_active Expired
- 1982-08-26 DE DE19823231848 patent/DE3231848A1/de active Granted
- 1982-08-26 KR KR8203840A patent/KR880001928B1/ko not_active IP Right Cessation
- 1982-08-26 JP JP57148487A patent/JPS5843676A/ja active Granted
- 1982-08-27 AT AT0323782A patent/AT399797B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3231848C2 (sv) | 1989-12-14 |
| FI76465C (sv) | 1988-10-10 |
| DE3231848A1 (de) | 1983-03-10 |
| ES515146A0 (es) | 1983-06-01 |
| KR840001417A (ko) | 1984-04-30 |
| FR2512301B1 (fr) | 1988-06-10 |
| FI822906A0 (fi) | 1982-08-20 |
| FR2512301A1 (fr) | 1983-03-04 |
| KR880001928B1 (ko) | 1988-09-30 |
| IT1152094B (it) | 1986-12-24 |
| GB2105537B (en) | 1985-06-12 |
| CA1179054A (en) | 1984-12-04 |
| US4376288A (en) | 1983-03-08 |
| AU555793B2 (en) | 1986-10-09 |
| AU8748282A (en) | 1984-03-01 |
| AT399797B (de) | 1995-07-25 |
| FI822906L (fi) | 1983-02-28 |
| JPS5843676A (ja) | 1983-03-14 |
| ATA323782A (de) | 1994-11-15 |
| ES8306949A1 (es) | 1983-06-01 |
| IT8222982A0 (it) | 1982-08-25 |
| GB2105537A (en) | 1983-03-23 |
| JPH0153828B2 (sv) | 1989-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: RCA LICENSING CORPORATION |