GB1035401A - Methods and apparatus for checking and controlling colour match in a colour television system - Google Patents
Methods and apparatus for checking and controlling colour match in a colour television systemInfo
- Publication number
- GB1035401A GB1035401A GB819864A GB819864A GB1035401A GB 1035401 A GB1035401 A GB 1035401A GB 819864 A GB819864 A GB 819864A GB 819864 A GB819864 A GB 819864A GB 1035401 A GB1035401 A GB 1035401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- area
- camera
- line
- signals
- 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
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
Abstract
1,035,401. Colour television. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Feb. 27, 1964 [Feb. 27, 1963], No. 8198/64. Heading H4F. Colour television signals from a camera 1 are applied to a colour monitor receiver 4 by way of change-over switches 65, 66, 67 which are controlled by a composite line- and framefrequency pulse train whereby the camera signals are interrupted over an area 62, which may be adjusted in position, and replaced by potentials from three potentiometers 71, 72, 73 which are preset to cause the area to assume a reference colour, e.g. white. In operation the area 62 is positioned adjacent an area of corresponding colour in the image due to the camera signals and serve to permit the colour balance of the apparatus to be checked and corrected. The composite pulse train is formed by combining in an adder 63 line- and framefrequency pulses 58 and 59 which are derived from line- and frame-frequency synchronizing pulses 52, 53 by way of delay and clipping circuits, such as 54 and 57. The delays are controlled by potentiometers 56 and 60 which are actuated by a common joy-stick type of control 61. It is stated that the group of elements 5 which form the subject of the invention may be incorporated in a camera chain or a receiver, or may be a separate device which is introduced only for adjustment checks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR926220A FR1358474A (en) | 1963-02-27 | 1963-02-27 | Improvements in color television control devices and methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1035401A true GB1035401A (en) | 1966-07-06 |
Family
ID=8798032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB819864A Expired GB1035401A (en) | 1963-02-27 | 1964-02-27 | Methods and apparatus for checking and controlling colour match in a colour television system |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT245066B (en) |
| BE (1) | BE643951A (en) |
| CH (1) | CH420257A (en) |
| DE (1) | DE1190498B (en) |
| FR (1) | FR1358474A (en) |
| GB (1) | GB1035401A (en) |
| NL (1) | NL143780B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220541A (en) * | 1988-06-11 | 1990-01-10 | Samsung Electronics Co Ltd | A circuit for generating a center point of a viewfinder |
| US5119178A (en) * | 1990-01-19 | 1992-06-02 | U.S. Philips Corporation | Video camera with manual color balance adjusting option |
| US5313273A (en) * | 1991-10-31 | 1994-05-17 | Crosfield Electronics Limited | Apparatus for calibrating an analogue screen display system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3558806A (en) * | 1968-04-01 | 1971-01-26 | Rca Corp | Matrixing apparatus |
| FR2034340B1 (en) * | 1969-03-18 | 1974-03-15 | Sanders Associates Inc | |
| JPS6013359B2 (en) * | 1975-12-03 | 1985-04-06 | ソニー株式会社 | color television receiver |
| JPS53101932A (en) * | 1977-02-17 | 1978-09-05 | Sony Corp | Color television picture receiver |
| JPS54111720A (en) * | 1978-02-22 | 1979-09-01 | Nissan Motor | Method of indicating color |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB633424A (en) * | 1947-01-21 | 1949-12-19 | Ronald Thomas Clayden | Improvements relating to television apparatus |
| US2784247A (en) * | 1951-04-10 | 1957-03-05 | Gen Electric | Indicator for television images |
| DE902739C (en) * | 1951-09-23 | 1954-01-28 | Fernseh Gmbh | Television broadcast method |
-
1963
- 1963-02-27 FR FR926220A patent/FR1358474A/en not_active Expired
-
1964
- 1964-02-18 BE BE643951D patent/BE643951A/xx unknown
- 1964-02-19 AT AT137164A patent/AT245066B/en active
- 1964-02-19 DE DEC32203A patent/DE1190498B/en active Pending
- 1964-02-27 GB GB819864A patent/GB1035401A/en not_active Expired
- 1964-02-27 CH CH243464A patent/CH420257A/en unknown
- 1964-02-27 NL NL6401889A patent/NL143780B/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220541A (en) * | 1988-06-11 | 1990-01-10 | Samsung Electronics Co Ltd | A circuit for generating a center point of a viewfinder |
| GB2220541B (en) * | 1988-06-11 | 1993-01-06 | Samsung Electronics Co Ltd | A circuit for generating a center point in a viewfinder |
| US5119178A (en) * | 1990-01-19 | 1992-06-02 | U.S. Philips Corporation | Video camera with manual color balance adjusting option |
| US5313273A (en) * | 1991-10-31 | 1994-05-17 | Crosfield Electronics Limited | Apparatus for calibrating an analogue screen display system |
Also Published As
| Publication number | Publication date |
|---|---|
| AT245066B (en) | 1966-02-10 |
| FR1358474A (en) | 1964-04-17 |
| DE1190498B (en) | 1965-04-08 |
| NL143780B (en) | 1974-10-15 |
| NL6401889A (en) | 1964-08-28 |
| BE643951A (en) | 1964-06-15 |
| CH420257A (en) | 1966-09-15 |
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