CA1011870A - Aperture corrector for a television image signal - Google Patents
Aperture corrector for a television image signalInfo
- Publication number
- CA1011870A CA1011870A CA173,406A CA173406A CA1011870A CA 1011870 A CA1011870 A CA 1011870A CA 173406 A CA173406 A CA 173406A CA 1011870 A CA1011870 A CA 1011870A
- Authority
- CA
- Canada
- Prior art keywords
- image signal
- television image
- aperture corrector
- corrector
- aperture
- 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
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
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
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 |
|---|---|---|---|
| NL7207934.A NL158987B (nl) | 1972-06-10 | 1972-06-10 | Apertuurcorrector voor een televisiebeeldsignaal, alsmede televisie-opneeminrichting, daarvan voorzien. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1011870A true CA1011870A (en) | 1977-06-07 |
Family
ID=19816249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA173,406A Expired CA1011870A (en) | 1972-06-10 | 1973-06-06 | Aperture corrector for a television image signal |
Country Status (11)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041531A (en) * | 1974-07-05 | 1977-08-09 | Rca Corporation | Television signal processing apparatus including a transversal equalizer |
| JPS51107031A (US07655688-20100202-C00086.png) * | 1975-03-17 | 1976-09-22 | Matsushita Electric Ind Co Ltd | |
| NL7511784A (nl) * | 1975-03-24 | 1977-04-13 | Philips Nv | Werkwijze en inrichting voor het maken van een videoplaat. |
| NL185439C (nl) * | 1977-11-28 | 1990-04-02 | Philips Nv | Televisiecameraschakeling voorzien van een gamma- en een apertuurcorrectieschakeling. |
| US4245238A (en) * | 1979-05-11 | 1981-01-13 | Rca Corporation | Non-linear processing of video image vertical detail information |
| US4404584A (en) * | 1979-05-11 | 1983-09-13 | Rca Corporation | Signal processing apparatus effecting asymmetrical vertical peaking |
| JPS5689173A (en) * | 1979-12-20 | 1981-07-20 | Sony Corp | Vertical aperture correcting circuit |
| US4336552A (en) * | 1980-12-17 | 1982-06-22 | Sony Corporation | Vertical aperture correction circuit |
| FR2501941B1 (fr) * | 1981-03-12 | 1986-04-11 | Cit Alcatel | Procede et dispositif d'accentuation des traits d'une image en noir et blanc reproduite a partir d'une transcription numerique |
| FR2507041B1 (fr) * | 1981-05-27 | 1985-10-18 | Thomson Csf | Dispositif correcteur d'un signal videofrequence de television par attenuation dynamique du niveau du bruit et source d'images de television comportant un tel dispositif |
| NL8103090A (nl) * | 1981-06-26 | 1983-01-17 | Philips Nv | Televisiekamera voorzien van een fokusseerinrichting. |
| DE3226432A1 (de) * | 1981-10-14 | 1984-01-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltung zur versteilerung der flanken eines videosignals |
| DE3400674C1 (de) * | 1984-01-11 | 1985-03-21 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Schaltung zur Versteilerung der Flanken eines Videosignals |
| US4663653A (en) * | 1985-11-22 | 1987-05-05 | Rca Corporation | Vertical detail enhancer |
| DE68922433T2 (de) * | 1988-05-18 | 1996-01-11 | Hitachi Ltd | Aporturkorrekturschaltung. |
| US4979024A (en) * | 1988-09-19 | 1990-12-18 | Fuji Photo Film Co., Ltd. | Vertical contour enhancement suppression circuit |
| DE4090689T1 (de) * | 1989-04-28 | 1991-04-25 | Ikegami Tsushinki Kk | Konturhervorhebungsgeraet in einer fernsehkamera |
| JP2596460B2 (ja) * | 1989-04-28 | 1997-04-02 | 池上通信機株式会社 | テレビカメラの輪郭強調装置 |
| JPH0522655A (ja) * | 1991-07-10 | 1993-01-29 | Sony Corp | ビデオカメラ |
| US5903316A (en) * | 1992-12-25 | 1999-05-11 | Canon Kabushiki Kaisha | Information signal processing apparatus |
| US5543859A (en) * | 1994-04-15 | 1996-08-06 | Matsushita Electric Industrial Co., Ltd. | Horizontal contour emphasizing signal processor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3011018A (en) * | 1956-09-26 | 1961-11-28 | Columbia Broadcasting Syst Inc | Highlight aperture correction system |
| US3783190A (en) * | 1971-04-08 | 1974-01-01 | Gte Sylvania Inc | Aperture correction circuit for low light level television camera |
| US3743770A (en) * | 1971-08-02 | 1973-07-03 | Singer Co | Automatic aperture corrector |
-
1972
- 1972-06-10 NL NL7207934.A patent/NL158987B/xx unknown
-
1973
- 1973-05-07 US US357803A patent/US3919470A/en not_active Expired - Lifetime
- 1973-05-19 DE DE2325499A patent/DE2325499C3/de not_active Expired
- 1973-06-06 CA CA173,406A patent/CA1011870A/en not_active Expired
- 1973-06-07 GB GB2717273A patent/GB1420257A/en not_active Expired
- 1973-06-07 IT IT50552/73A patent/IT986137B/it active
- 1973-06-07 AT AT500873A patent/AT324454B/de not_active IP Right Cessation
- 1973-06-07 FR FR7320708A patent/FR2188381B1/fr not_active Expired
- 1973-06-07 SE SE7308033A patent/SE381157B/xx unknown
- 1973-06-08 ES ES415715A patent/ES415715A1/es not_active Expired
- 1973-06-08 JP JP48063955A patent/JPS5232929B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT324454B (de) | 1975-09-10 |
| JPS5232929B2 (US07655688-20100202-C00086.png) | 1977-08-25 |
| ES415715A1 (es) | 1976-02-01 |
| DE2325499C3 (de) | 1975-11-13 |
| FR2188381B1 (US07655688-20100202-C00086.png) | 1981-08-07 |
| US3919470A (en) | 1975-11-11 |
| GB1420257A (en) | 1976-01-07 |
| NL7207934A (US07655688-20100202-C00086.png) | 1973-12-12 |
| IT986137B (it) | 1975-01-20 |
| USB357803I5 (US07655688-20100202-C00086.png) | 1975-01-28 |
| JPS4963329A (US07655688-20100202-C00086.png) | 1974-06-19 |
| DE2325499A1 (de) | 1974-01-03 |
| NL158987B (nl) | 1978-12-15 |
| FR2188381A1 (US07655688-20100202-C00086.png) | 1974-01-18 |
| SE381157B (sv) | 1975-11-24 |
| DE2325499B2 (de) | 1975-04-03 |
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