JPS574678A - Color shift eliminating system for color solid-state pickup device - Google Patents
Color shift eliminating system for color solid-state pickup deviceInfo
- Publication number
- JPS574678A JPS574678A JP7234880A JP7234880A JPS574678A JP S574678 A JPS574678 A JP S574678A JP 7234880 A JP7234880 A JP 7234880A JP 7234880 A JP7234880 A JP 7234880A JP S574678 A JPS574678 A JP S574678A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- green
- color
- circuit
- contour
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
- H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
- H04N25/134—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on three different wavelength filter elements
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
PURPOSE:To avoid a color shift phenomenon, by detecting only a contour signal in the vertical direction based on a difference between the green signal of a wide band and the green signal of a narrow band and then controlling the subcarrier signal that is modulated by a rectified signal of the said contour signal. CONSTITUTION:Both the green signal GW of a wide band and the green signal of a narrow band sent from a low pass filter 19 are applied to a subtracting circuit 16, and the green signal GH of a high band is obtained from a difference between the above-mentioned two green signals. The signal GH is made to pass through a low pass filter 61 to be turned into the contour signal GHL of vertical direction. The signal GHL receives a full-wave rectification and a waveform shaping through an absolute value converting circuit 62 and a waveform shaping circuit 63 to be changed into a control signal of a color encoder 28'. On the other hand, the green, red and blue signals of a low band that are supplied from process amplifiers 20, 25 and 27 respectively are supplied to a matrix circuit 51 to receive a synthesization of luminance signals, and at the same time modulated by modulators 52 and 54 to be synthesized into a chrominance signal after mixed up through a mixer 56. This chrominance signal receives a reduction at its vertical contour part by tbe control signal by an amplitude control circuit 64 to be sent into a mixer 58 to be mixed with the luminance signal and then outputted in the form of a color TV signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234880A JPS574678A (en) | 1980-05-30 | 1980-05-30 | Color shift eliminating system for color solid-state pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234880A JPS574678A (en) | 1980-05-30 | 1980-05-30 | Color shift eliminating system for color solid-state pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS574678A true JPS574678A (en) | 1982-01-11 |
Family
ID=13486706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7234880A Pending JPS574678A (en) | 1980-05-30 | 1980-05-30 | Color shift eliminating system for color solid-state pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS574678A (en) |
-
1980
- 1980-05-30 JP JP7234880A patent/JPS574678A/en active Pending
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