Power supply regulation for programmable gain amplifier used in a CMOS image sensor
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United States of America Patent
Stats
-
Jul 12, 2016
Grant Date -
Dec 5, 2013
app pub date -
Jan 29, 2013
filing date -
Jun 1, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image sensor array that has a plurality of image sensing pixels and a plurality of programmable gain amplifiers, each of the programmable gain amplifiers connected to receive and amplify an output of said image sensing pixels. Each of said programmable gain senses when an output of the programmable gain amplifier is in an oversaturated condition. Responsive to sensing that the output of the programmable gain amplifier in the oversaturated condition, the amplifier automatically clamps a bias amount to the programmable gain amplifier, to thereby regulate an amount of current draw of the programmable gain amplifier. In this way, the power supply current to that pixel which is oversaturated is prevented from affecting power supplies to the other pixels, by regulating the power supply to the oversaturated pixel.
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Patent Citation Ranking
- 1 Citation Count
- H01J Class
- 20.76 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 12, 2028 |
