Communication apparatus

Details Communication apparatus Communication apparatus

1995-12-29

1998-04-28

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3582611, 358426, 358433, 358427, 382238, 382239, H04N 1417, H04N 141, H04N 1415

Patent

active

057452458

ABSTRACT:
The facsimile machine codes image data in order to reduce the data size to be transmitted. In coding an image data, an adaptive template pixel is referred to whose position relative to the pixels to be coded is kept constant. In a sampling period, the relative position of the adaptive template pixel is changed for each image data among predetermined positions, and a compression rate is calculated and stored. When an image data is transmitted after the sampling period, the adaptive template pixel is set at one of the positions which yielded high compression rates in the sampling period.

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patent: 5297220 (1994-03-01), Nomizu
patent: 5491564 (1996-02-01), Hongu
patent: 5521717 (1996-05-01), Maeda

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