Solid state image sensor having variable charge accumulation time period
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 1989
Grant Date -
N/A
app pub date -
Dec 21, 1987
filing date -
Dec 22, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solid state image sensor in which the charge accumulation period of each picture element can be set at the same point of time. Additionally, the lenngth of the charge period can be set at will, thus providing a video signal picture in which all picture elements bear image information with the same time reference. Sensitivity of the solid state image senosr can be adjusted by setting the length of charge accumulation period. In the solid state image sensor, photodiodes are disposed as picture elements, and video signal is output in accordance with a charge which is light-generated within respective photodiodes. A series circuit of a switch and a capacitance element is connected in parallel with the photodiode. The switch is closed for at least the charge accumulation period during which charge is light-generated within the photodiode, and the video signal is obtained in accordance with level of charging of said capacitance element.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully