04885576 is referenced by 11 patents and cites 14 patents.

Digital data defining images are stored in a multiplane buffer. The buffer may store plural images by restricting data corresponding to an image or image portion to storage in less than half the bit planes of the buffer. An image is displayed by reading data from the buffer and selectively passing only a portion of the data read to a display. The data defining the images may be converted from facsimile (single bit per pixel) to gray scale format (multiple bits per pel) before being written to the buffer. The conversion relies on a table storing data definitive of the effect, on the image, of a facsimile transition (1/0 ot 0/1) as a function of the location of the transition. Conversion from facsimile to gray scale is effected by examining the facsimile data for data transmission and summing the effect of each of the transitions to convert a segment of facsimile data to gray scale data.

A system is also disclosed for rapidly converting an image in run-end form to a reduced-resolution gray-tone image.

Title
Soft copy display of facsimile images
Application Number
6/847376
Publication Number
4885576
Application Date
April 2, 1986
Publication Date
December 5, 1989
Inventor
Frederick C Mintzer
Shrub Oak
NY, US
Joan L Mitchell
Ossining
NY, US
William B Pennebaker
Carmel
NY, US
Agent
Thomas P Dowd
Assignee
International Business Machines Corporation
NY, US
IPC
G09G 3/36
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