GB1092882A - Improvements relating to the generation of electrical signals representing colour components of an image - Google Patents
Improvements relating to the generation of electrical signals representing colour components of an imageInfo
- Publication number
- GB1092882A GB1092882A GB20563/64A GB2056364A GB1092882A GB 1092882 A GB1092882 A GB 1092882A GB 20563/64 A GB20563/64 A GB 20563/64A GB 2056364 A GB2056364 A GB 2056364A GB 1092882 A GB1092882 A GB 1092882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- red
- strips
- blue
- green
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000003086 colorant Substances 0.000 abstract 1
- 210000001747 pupil Anatomy 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/12—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with one sensor only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
- H04N23/16—Optical arrangements associated therewith, e.g. for beam-splitting or for colour correction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Image Signal Generators (AREA)
- Eye Examination Apparatus (AREA)
Abstract
1,092,882. Colour television cameras. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 19, 1964 [May 16, 1963], No. 20563/64. Heading H4F. [Also in Division G2] Image light is focused on the target 3, Fig. 1, of a pick-up tube 2 by a lens 4 and is divided into its component colours by means of two filter gratings 1 which are spaced from each other and are located in the path of the convergent light from the exit pupil of lens to the target in a position so that they are not in focus on the target surface. The Specification discusses the relationships between the grating constants and their spacings from the target which are necessary to produce desired colour shadow patterns whereby the colour components may be distinguished. A first arrangement, Fig. 4, is concerned with the generation of simultaneous colour signals and uses gratings as shown at 9 and 10 with strips disposed at right-angles to the line scanning direction and formed in a repeating sequence of white (W), yellow (Y), cyan (C) and green (G). The gratings allow green light to pass without modification but impose line structures on the red and blue light with the blue pattern period half that of the red. As a consequence, during scanning, green appears as a conventional video signal whilst red and blue appear simultaneously as carrier signals with frequencies in the ratio 1 : 2: Fig. 5 (not shown) illustrates a modification in which the second grating 12 is formed with only white (W) and green or black strips. A second arrangement, Fig. 6, uses gratings as shown at 13 and 14 (the unreferenced shaded strips being black) and produces a shadow pattern giving a light distribution along a scanning line as shown at (c) whereby dot sequential signals are produced. A third arrangement, Fig. 7, is employed for the generation of line-sequential colour signals and utilizes horizontal strip gratings as shown at (a). The green strips are uninterrupted, but the red and blue strips are interrupted by black section as shown shaded. The number of black sections in the blue strips is twice that in the red strips. The vertical light distribution is as shown at (b), the intensity peaks corresponding to scanning line spacing. Red, green and blue signals thus appear in sequence at line rate, the red and blue signals being carrier signals which are distingushed in frequency. This third arrangement may be utilized in the apparatus described in Specification 1,092,881 where the line-sequential signals are subsequently converted to simultaneous signals. The gratings may be in the form of lenticulations which have a focusing effect.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3977/63A GB1092881A (en) | 1963-01-31 | 1963-01-31 | Improvements relating to colour television apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1092882A true GB1092882A (en) | 1967-11-29 |
Family
ID=9768468
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3977/63A Expired GB1092881A (en) | 1963-01-31 | 1963-01-31 | Improvements relating to colour television apparatus |
GB20563/64A Expired GB1092882A (en) | 1963-01-31 | 1963-05-16 | Improvements relating to the generation of electrical signals representing colour components of an image |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3977/63A Expired GB1092881A (en) | 1963-01-31 | 1963-01-31 | Improvements relating to colour television apparatus |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1230454B (en) |
GB (2) | GB1092881A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3619489A (en) * | 1969-02-12 | 1971-11-09 | Rca Corp | Shadowing system for color encoding camera |
GB2138588A (en) * | 1983-04-19 | 1984-10-24 | Barr & Stroud Ltd | Optical Grating for Displacement Sensor |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287118B (en) * | 1966-12-16 | 1969-01-16 | Fernseh Gmbh | Method and arrangement for generating simultaneous color value signals by means of a television picture recording tube |
JPS5737151B2 (en) * | 1974-08-22 | 1982-08-07 | ||
US4064532A (en) * | 1974-09-18 | 1977-12-20 | Sony Corporation | Solid state color camera |
DE3120849A1 (en) * | 1981-05-26 | 1982-12-23 | Agfa-Gevaert Ag, 5090 Leverkusen | COLOR FILTER ARRANGEMENT FOR AN OPTOELECTRONIC CONVERTER DEVICE |
DE206665T1 (en) * | 1985-06-24 | 1987-04-09 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa | COLOR IMAGE RECORDING DEVICE. |
US4829369A (en) * | 1985-06-27 | 1989-05-09 | Victor Company Of Japan, Ltd. | Color television image pickup device with a stripe filter |
US4757377A (en) * | 1985-07-27 | 1988-07-12 | Victor Company Of Japan, Ltd. | Color television image pickup device with a stripe filter parallel to scanning direction |
DE202007019236U1 (en) | 2007-11-02 | 2011-11-09 | Valentina Anzupowa | Color splitter imager group with partially opaque mirrors and mosaic color filters |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB562334A (en) * | 1942-10-10 | 1944-06-28 | John Logie Baird | Improvements in colour television apparatus |
FR1003851A (en) * | 1947-03-06 | 1952-03-24 | Cfcmug | Improvement in color image analyzers |
FR958015A (en) * | 1947-12-27 | 1950-03-02 | ||
GB738386A (en) * | 1952-07-02 | 1955-10-12 | Marconi Wireless Telegraph Co | Improvements in or relating to colour television transmission |
AT186302B (en) * | 1953-11-14 | 1956-07-25 | Philips Nv | Apparatus for the simultaneous generation of several independent television information signals |
BE557654A (en) * | 1956-05-25 |
-
1963
- 1963-01-31 GB GB3977/63A patent/GB1092881A/en not_active Expired
- 1963-05-16 GB GB20563/64A patent/GB1092882A/en not_active Expired
-
1964
- 1964-01-30 DE DEE26309A patent/DE1230454B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3619489A (en) * | 1969-02-12 | 1971-11-09 | Rca Corp | Shadowing system for color encoding camera |
GB2138588A (en) * | 1983-04-19 | 1984-10-24 | Barr & Stroud Ltd | Optical Grating for Displacement Sensor |
Also Published As
Publication number | Publication date |
---|---|
DE1230454B (en) | 1966-12-15 |
GB1092881A (en) | 1967-11-29 |
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