Appeal No. 1997-0017
Application No. 08/188,365
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A method of compressing non-transposed data
comprising
the steps:
(a) receiving successive non-transposed columns of
binary pixels representing data on a document using a document
scanner, with said successive non-transposed columns of binary
pixels including a first non-transposed column of binary
pixels and a last non-transposed column of binary pixels to be
processed, said successive non-transposed columns of binary
pixels being derived from the same document;
(b) using an examining window to extend over a
predetermined number of said successive non-transposed columns
along a direction which is perpendicular to the direction of
said columns so as to present a row of said binary pixels,
with said using step using only one binary pixel from each of
said non-transposed columns of binary pixels for said row of
binary pixels;
(c) generating a change of color bit for each of the
binary pixels in the examining window, starting with said
first non-transposed column of binary pixels while said
examining window is moved towards said last non-transposed
column of binary pixels;
(d) examining a pixel in a target row under
consideration in said window with regard to a reference row
and designating coding according to a predetermined code which
uses said reference row for compressing pixels in said target
row, with said reference row and said target row being
perpendicular to said successive non-transposed columns of
binary pixels;
(e) compressing said target row starting with said first
non-transposed column of binary pixels while said examining
window is moved towards said last non-transposed column of
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