JPS5680968A - Noise elimination system of solid-state image pickup device - Google Patents
Noise elimination system of solid-state image pickup deviceInfo
- Publication number
- JPS5680968A JPS5680968A JP15796579A JP15796579A JPS5680968A JP S5680968 A JPS5680968 A JP S5680968A JP 15796579 A JP15796579 A JP 15796579A JP 15796579 A JP15796579 A JP 15796579A JP S5680968 A JPS5680968 A JP S5680968A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- circuit
- video signal
- period
- solid
- 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.)
- Granted
Links
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
PURPOSE:To prevent a fixed noise from entering an effective video signal part by generating the original signal pulse of a transfer pulse during the ineffective period of a video signal and by stopping it in the effective period of the video signal. CONSTITUTION:Pulses generated by 24MHz oscillator 10 are applied to four-phase pulse generating circuit 11, 1/20 frequency dividing circuit 12 and 1360-scale counter 13. On the other hand, horizontal blanking pulses HBP and vertical blanking pulses VBP are applied to OR circuit 14 and by an obtained signal, frequency dividing circuit 12 is driven to obtain pulses of 1.2MHz generated only in the blanking period. Further, 1024-scale counter 15 and FF16 generate frame transfer operation regulation pulses on the basis of VBP and pulses of 1.2MHz and the output of counter 13 and HBP are applied to FF18 to obtain line-shift operation regulation pulses. Both regulation pulses are applied to OR circuit 19, whose output is applied to pulse generating circuit 11.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54157965A JPS605102B2 (en) | 1979-12-07 | 1979-12-07 | Noise removal method for solid-state imaging devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54157965A JPS605102B2 (en) | 1979-12-07 | 1979-12-07 | Noise removal method for solid-state imaging devices |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5680968A true JPS5680968A (en) | 1981-07-02 |
JPS605102B2 JPS605102B2 (en) | 1985-02-08 |
Family
ID=15661309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54157965A Expired JPS605102B2 (en) | 1979-12-07 | 1979-12-07 | Noise removal method for solid-state imaging devices |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS605102B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56119576A (en) * | 1980-02-25 | 1981-09-19 | Hitachi Ltd | Pulse generating circuit |
JPS58161365U (en) * | 1982-04-20 | 1983-10-27 | シャープ株式会社 | Solid-state image sensor readout device |
JPS59104870A (en) * | 1982-12-07 | 1984-06-16 | Matsushita Electric Ind Co Ltd | Driving circuit of solid-state image pickup device |
JPS60123172A (en) * | 1983-12-06 | 1985-07-01 | Canon Inc | Image pickup device |
JPS60227570A (en) * | 1984-04-25 | 1985-11-12 | Matsushita Electric Ind Co Ltd | Pulse generating circuit for driving solid-state image pickup element |
JPS61108268A (en) * | 1984-10-31 | 1986-05-26 | Matsushita Electric Ind Co Ltd | Solid-state image pickup device |
-
1979
- 1979-12-07 JP JP54157965A patent/JPS605102B2/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56119576A (en) * | 1980-02-25 | 1981-09-19 | Hitachi Ltd | Pulse generating circuit |
JPH0153543B2 (en) * | 1980-02-25 | 1989-11-14 | Hitachi Ltd | |
JPS58161365U (en) * | 1982-04-20 | 1983-10-27 | シャープ株式会社 | Solid-state image sensor readout device |
JPS59104870A (en) * | 1982-12-07 | 1984-06-16 | Matsushita Electric Ind Co Ltd | Driving circuit of solid-state image pickup device |
JPS60123172A (en) * | 1983-12-06 | 1985-07-01 | Canon Inc | Image pickup device |
JPH0137071B2 (en) * | 1983-12-06 | 1989-08-03 | Canon Kk | |
JPS60227570A (en) * | 1984-04-25 | 1985-11-12 | Matsushita Electric Ind Co Ltd | Pulse generating circuit for driving solid-state image pickup element |
JPS61108268A (en) * | 1984-10-31 | 1986-05-26 | Matsushita Electric Ind Co Ltd | Solid-state image pickup device |
Also Published As
Publication number | Publication date |
---|---|
JPS605102B2 (en) | 1985-02-08 |
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