Invention Grant
- Patent Title: Noise reduction for analog video applications
- Patent Title (中): 模拟视频应用降噪
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Application No.: US12401808Application Date: 2009-03-11
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Publication No.: US08098314B2Publication Date: 2012-01-17
- Inventor: Emanuele Mandelli
- Applicant: Emanuele Mandelli
- Applicant Address: US CA Westlake Village
- Assignee: AltaSens, Inc
- Current Assignee: AltaSens, Inc
- Current Assignee Address: US CA Westlake Village
- Agency: Turocy & Watson, LLP
- Main IPC: H04N5/335
- IPC: H04N5/335 ; H04N5/217

Abstract:
Systems and methods are provided that facilitate reducing noise within sampled video information in a CMOS sensor imager. A multi-capacitor sample and hold can capture multiple samples of video information during at least partially overlapping time intervals. The multi-capacitor sample and hold can include a plurality of capacitors and a plurality of sampling switches, wherein each of the sampling switches can be coupled to a respective one of the plurality of capacitors. The plurality of sampling switches can be closed at a substantially concurrent time to begin capturing samples with the plurality of capacitors. Thereafter, the plurality of sampling switches can each be opened at respective disparate times to collect differing noise samples with each of the plurality of capacitors. A readout component can combine (e.g., average) the samples obtained by the plurality of capacitors, thereby reducing noise levels.
Public/Granted literature
- US20100231796A1 NOISE REDUCTION FOR ANALOG VIDEO APPLICATIONS Public/Granted day:2010-09-16
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