Invention Grant
- Patent Title: High speed edge detection
- Patent Title (中): 高速边缘检测
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Application No.: US13749773Application Date: 2013-01-25
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Publication No.: US09160896B1Publication Date: 2015-10-13
- Inventor: Norman F Prokop
- Applicant: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Applicant Address: US DC Washington
- Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
- Current Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
- Current Assignee Address: US DC Washington
- Agent Robert H. Earp, III
- Main IPC: H04N5/14
- IPC: H04N5/14
Abstract:
Analog circuits for detecting edges in pixel arrays are disclosed. A comparator may be configured to receive an all pass signal and a low pass signal for a pixel intensity in an array of pixels. A latch may be configured to receive a counter signal and a latching signal from the comparator. The comparator may be configured to send the latching signal to the latch when the all pass signal is below the low pass signal minus an offset. The latch may be configured to hold a last negative edge location when the latching signal is received from the comparator.
Information query
