ZA752666B - Black level clampring circuit for a television signal processor - Google Patents
Black level clampring circuit for a television signal processorInfo
- Publication number
- ZA752666B ZA752666B ZA00752666A ZA752666A ZA752666B ZA 752666 B ZA752666 B ZA 752666B ZA 00752666 A ZA00752666 A ZA 00752666A ZA 752666 A ZA752666 A ZA 752666A ZA 752666 B ZA752666 B ZA 752666B
- Authority
- ZA
- South Africa
- Prior art keywords
- clampring
- circuit
- signal processor
- television signal
- black level
- Prior art date
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US465891A US3927255A (en) | 1974-05-01 | 1974-05-01 | Black level clamping circuit for a television signal processor |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA752666B true ZA752666B (en) | 1976-04-28 |
Family
ID=23849588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00752666A ZA752666B (en) | 1974-05-01 | 1975-04-24 | Black level clampring circuit for a television signal processor |
Country Status (14)
Country | Link |
---|---|
US (1) | US3927255A (xx) |
JP (1) | JPS5527497B2 (xx) |
AT (1) | AT368338B (xx) |
AU (1) | AU498711B2 (xx) |
CA (1) | CA1049649A (xx) |
DE (1) | DE2519359C3 (xx) |
DK (1) | DK144550C (xx) |
FI (1) | FI59901C (xx) |
FR (1) | FR2269830B1 (xx) |
GB (1) | GB1511003A (xx) |
IT (1) | IT1037317B (xx) |
NL (1) | NL7505095A (xx) |
SE (1) | SE395212B (xx) |
ZA (1) | ZA752666B (xx) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5542552B2 (xx) * | 1974-08-14 | 1980-10-31 | ||
US4101932A (en) * | 1975-11-17 | 1978-07-18 | Harris Corporation | Video preamplifier for camera operated in act mode |
US4044375A (en) * | 1976-08-19 | 1977-08-23 | Rca Corporation | Brightness control apparatus |
US4110787A (en) * | 1977-07-28 | 1978-08-29 | Rca Corporation | Combined blanking level and kinescope bias clamp for a television signal processing system |
US4207591A (en) * | 1978-02-09 | 1980-06-10 | Rca Corporation | Gated automatic beam current limiter in a video signal processing system |
NL7901722A (nl) * | 1979-03-05 | 1980-09-09 | Philips Nv | Klemschakeling voor een videosignaal. |
US4261015A (en) * | 1979-07-09 | 1981-04-07 | Burroughs Corporation | Video clamp |
US4295161A (en) * | 1980-04-21 | 1981-10-13 | Rca Corporation | Keyed noise filter in a television receiver |
JPS645569U (xx) * | 1987-06-26 | 1989-01-12 | ||
US5610840A (en) * | 1993-09-02 | 1997-03-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Signal processing device |
US5708482A (en) * | 1994-09-08 | 1998-01-13 | Asahi Kogaku Kogyo Kabushiki Kaisha | Image-signal clamping circuit for electronic endoscope |
US5841488A (en) * | 1995-12-28 | 1998-11-24 | Thomson Consumer Electronics, Inc. | Multiple video input clamping arrangement |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE486285A (xx) * | 1947-12-13 | |||
US3159751A (en) * | 1960-11-25 | 1964-12-01 | Ibm | Clamp circuit with a shunt unilateral discharge path |
DE1172300B (de) * | 1962-07-11 | 1964-06-18 | Fernseh Gmbh | Verfahren und Schaltungsanordnung zur UEbertragung eines Videosignals |
US3288926A (en) * | 1963-07-01 | 1966-11-29 | Northern Electric Co | Direct current restoration curcuit |
US3463940A (en) * | 1966-02-02 | 1969-08-26 | Northern Electric Co | D.c. restoration circuit |
FR1517067A (fr) * | 1967-02-02 | 1968-03-15 | Radiotechnique | Perfectionnements au procédé et au dispositif de comande automatique de gain et decalage du niveau du noir pour récepteurs de télévision |
US3551596A (en) * | 1968-05-17 | 1970-12-29 | Bell Telephone Labor Inc | Error compensation network for video signals |
JPS4918416A (xx) * | 1972-06-12 | 1974-02-18 | ||
US3814952A (en) * | 1972-12-15 | 1974-06-04 | Bell Telephone Labor Inc | Dual mode video clamping circuit |
-
1974
- 1974-05-01 US US465891A patent/US3927255A/en not_active Expired - Lifetime
-
1975
- 1975-04-16 IT IT22418/75A patent/IT1037317B/it active
- 1975-04-22 CA CA225,127A patent/CA1049649A/en not_active Expired
- 1975-04-23 SE SE7504678A patent/SE395212B/xx not_active IP Right Cessation
- 1975-04-24 ZA ZA00752666A patent/ZA752666B/xx unknown
- 1975-04-24 FI FI751242A patent/FI59901C/fi not_active IP Right Cessation
- 1975-04-25 GB GB17250/75A patent/GB1511003A/en not_active Expired
- 1975-04-28 AU AU80577/75A patent/AU498711B2/en not_active Expired
- 1975-04-29 NL NL7505095A patent/NL7505095A/xx not_active Application Discontinuation
- 1975-04-30 DE DE2519359A patent/DE2519359C3/de not_active Expired
- 1975-04-30 AT AT0335475A patent/AT368338B/de not_active IP Right Cessation
- 1975-04-30 JP JP5310375A patent/JPS5527497B2/ja not_active Expired
- 1975-04-30 FR FR7513639A patent/FR2269830B1/fr not_active Expired
- 1975-04-30 DK DK188475A patent/DK144550C/da not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATA335475A (de) | 1982-01-15 |
FI59901B (fi) | 1981-06-30 |
AU8057775A (en) | 1976-11-04 |
NL7505095A (nl) | 1975-11-04 |
DE2519359C3 (de) | 1978-08-24 |
FI59901C (fi) | 1981-10-12 |
FI751242A (xx) | 1975-11-02 |
IT1037317B (it) | 1979-11-10 |
DK188475A (da) | 1975-11-02 |
SE395212B (sv) | 1977-08-01 |
GB1511003A (en) | 1978-05-17 |
DK144550B (da) | 1982-03-22 |
CA1049649A (en) | 1979-02-27 |
JPS5527497B2 (xx) | 1980-07-21 |
FR2269830A1 (xx) | 1975-11-28 |
DE2519359A1 (de) | 1975-11-13 |
AU498711B2 (en) | 1979-03-22 |
JPS50151022A (xx) | 1975-12-04 |
FR2269830B1 (xx) | 1982-05-07 |
DE2519359B2 (de) | 1977-12-29 |
DK144550C (da) | 1982-09-06 |
US3927255A (en) | 1975-12-16 |
SE7504678L (sv) | 1975-11-03 |
AT368338B (de) | 1982-10-11 |
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