Anti-blooming circuit for CMOS image sensors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 14, 2003
Grant Date -
Feb 20, 2003
app pub date -
Aug 17, 2001
filing date -
Aug 17, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved image sensor constructed from a photodiode and a transimpedance amplifier having an input connected to the photodiode. The present invention utilizes a clamping circuit to prevent the potential at the input of the transimpedance amplifier from causing the photodiode to become forward biased. In the preferred embodiment of the present invention, the transimpedance amplifier includes a transistor connecting the input to the output, and the clamping circuit includes a circuit for holding the gate of the transistor at a clamping potential.
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