Invention Application
- Patent Title: BITLINE SETTLING SPEED ENHANCEMENT
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Application No.: US16199887Application Date: 2018-11-26
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Publication No.: US20200169682A1Publication Date: 2020-05-28
- Inventor: Rui Wang , Tiejun Dai , Ling Fu , Jiayu Guo
- Applicant: OmniVision Technologies, Inc.
- Main IPC: H04N5/378
- IPC: H04N5/378 ; H04N5/376 ; H04N5/369

Abstract:
An image sensor includes pixel circuitry with a photodiode to receive light and output a pixel signal. The image sensor also includes readout circuitry with a first sample and hold transistor coupled to the pixel circuitry, and a first capacitor coupled to the first sample and hold transistor to receive the pixel signal. A second sample and hold transistor is coupled to the pixel circuitry, and a second capacitor is coupled to the second sample and hold transistor to receive the pixel signal. A first output switch is coupled to output the pixel signal from the first capacitor, and a second output switch is coupled to output the pixel signal from the second capacitor. A boost transistor is coupled to connect the first output switch and the second output switch when the boost transistor is turned on.
Public/Granted literature
- US10834351B2 Bitline settling speed enhancement Public/Granted day:2020-11-10
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