Motion image difference detecting apparatus

Details Motion image difference detecting apparatus Motion image difference detecting apparatus

1991-07-08

1992-10-06

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 85, H04N 140

Patent

active

051537206

ABSTRACT:
In, for example, a teleconference system, a motion image difference detecting apparatus comprises a first memory (8) for storing first data of a motion image signal corresponding to a first area obtained by dividing the motion image signal, a second memory (12) for storing second data of the motion image signal corresponding to a second area obtained by so dividing the motion image signal, an overlap area of the motion image signal where the first and second areas meet being stored in each of the memories (8, 12), a memory controller (2) for controlling each of the memories (8, 12) so as to store thereinto the image signal of the overlap area, and a detector (6, 10) for detecting a difference between the present frame image and the preceding frame image in the form of block units.

REFERENCES:
patent: 4096525 (1978-06-01), Lathan
patent: 4272787 (1981-06-01), Michael

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