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High Speed Edge DetectionAnalog 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.
Document ID
20160011060
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Prokop, Norman F
Date Acquired
September 6, 2016
Publication Date
August 23, 2016
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-9,424,654
Patent Application
US-Patent-Appl-SN-14/814,863
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