Invention Grant
US09106849B2 Comparator implementation for processing signals output from an image sensor
有权
用于处理从图像传感器输出的信号的比较器实现
- Patent Title: Comparator implementation for processing signals output from an image sensor
- Patent Title (中): 用于处理从图像传感器输出的信号的比较器实现
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Application No.: US13743665Application Date: 2013-01-17
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Publication No.: US09106849B2Publication Date: 2015-08-11
- Inventor: Amar Duggal , John Kevin Moore
- Applicant: STMicroelectronics (Research & Development) Limited
- Applicant Address: GB Marlow, Buckinghamshire
- Assignee: STMicroelectronics (Research & Development) Limited
- Current Assignee: STMicroelectronics (Research & Development) Limited
- Current Assignee Address: GB Marlow, Buckinghamshire
- Agency: Gardere Wynne Sewell LLP
- Priority: GB1200761.3 20120117
- Main IPC: H04N5/335
- IPC: H04N5/335 ; H04N5/378 ; H04N5/357 ; G05F1/10
Abstract:
An image sensor includes an analog-to-digital converter receiving a pixel signal output. The converter includes a first inverting amplifier circuit having an input and an output, the first inverting amplifier circuit including a first bias circuit having a control node and configured to source current for first inverting amplifier circuit operation. The converter further includes a second inverting amplifier circuit having an input and an output, the second inverting amplifier circuit including a second bias circuit having a control node and configured to source current for second inverting amplifier circuit operation. The output of the first inverting amplifier circuit is coupled to the input of the second inverting amplifier circuit. A positive feedback circuit couples the output of the second inverting amplifier circuit to the control node of the first bias circuit.
Public/Granted literature
- US20130182164A1 COMPARATOR IMPLEMENTATION FOR PROCESSING SIGNALS OUTPUT FROM AN IMAGE SENSOR Public/Granted day:2013-07-18
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