Invention Grant
- Patent Title: Analog operation circuit for operating pulse width signals outputted from pixel circuit
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Application No.: US17672028Application Date: 2022-02-15
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Publication No.: US11546540B2Publication Date: 2023-01-03
- Inventor: Ren-Chieh Liu , Chih-Huan Wu , Yi-Hsien Ko , Han-Chi Liu
- Applicant: PixArt Imaging Inc.
- Applicant Address: TW Hsin-Chu County
- Assignee: PixArt Imaging Inc.
- Current Assignee: PixArt Imaging Inc.
- Current Assignee Address: TW Hsin-Chu County
- Agency: WPAT, PC
- Main IPC: H04N5/3745
- IPC: H04N5/3745 ; H01L27/146 ; H04N5/355 ; H04N5/374

Abstract:
There is provided a pixel circuit for performing analog operation including a photodiode, a first temporal circuit, a second temporal circuit and an operation circuit. Within a first interval, the photodiode detects first light energy to be stored in the first temporal circuit. Within a second interval, the photodiode detects second light energy to be stored in the second temporal circuit. Within an operation interval, the first temporal circuit outputs a first detection signal having a first pulse width according to the first light energy and outputs a second detection signal having a second pulse width according to the second light energy for being calculated by the operation circuit.
Public/Granted literature
- US20220174236A1 ANALOG OPERATION CIRCUIT FOR OPERATING PULSE WIDTH SIGNALS OUTPUTTED FROM PIXEL CIRCUIT Public/Granted day:2022-06-02
Information query
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