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Selective Video Event Recorder

IP.com Disclosure Number: IPCOM000059895D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Wilson, DR: AUTHOR

Abstract

Incoming digitized signals from a video camera or recorder are compared with a standard frame initially entered into storage. If the number of bits that are different between the incoming image and the standard frame exceeds a number preset by an operator, the incoming image is recorded in storage as one of a series of images spanning an event. The contents of storage are periodically dumped onto a back-up store, such as a disk or tape store. By suitably cycling selected frames from store, a series of images which span the event can be made available for replay at different speeds. Incoming video signals are digitized in an analog-to-digital converter 1, and passed through a gated OR circuit 2 to storage 3 which is under the control of a microprocessor sequencer 4.

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Selective Video Event Recorder

Incoming digitized signals from a video camera or recorder are compared with a standard frame initially entered into storage. If the number of bits that are different between the incoming image and the standard frame exceeds a number preset by an operator, the incoming image is recorded in storage as one of a series of images spanning an event. The contents of storage are periodically dumped onto a back-up store, such as a disk or tape store. By suitably cycling selected frames from store, a series of images which span the event can be made available for replay at different speeds. Incoming video signals are digitized in an analog-to-digital converter 1, and passed through a gated OR circuit 2 to storage 3 which is under the control of a microprocessor sequencer 4. In a frame 5 of storage 3 is recorded a standard frame which is compared with the incoming digitized signal in a comparator 6. If the number of bits that are different exceeds a preset number, the comparator issues a signal to the microprocessor sequencer 4 and to a trigger 7. The microprocessor sequencer 4, under control of a selector 8, enables the incoming digitized signal to be recorded in a selected frame 9 of the storage 3. As the storage frames 9 are filled with records of sequences spanning events, the data is transferred to disk or tape store 10 from time to time. Under control of the microprocessor sequencer 4, data from selected frames in selected events is fed...