Image analysis – Histogram processing – For setting a threshold
Patent
1995-06-28
1998-10-06
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
382232, G06F 1500
Patent
active
058190120
ABSTRACT:
Printing is effected in units of data of a band that includes a plurality of line data while a recording head is moved perpendicularly to the movement direction of a recording medium. An output interface receives compressed data from an external apparatus. An output buffer retains data of the nth band even after printing of those data. An output processing section judges whether each line data of the (n+1)th band is compressed data, empty data, or non-compressed data. For the compressed data, the output processing section restores the line data of the (n+1)th band using differences from corresponding line data of the nth band, and updates the corresponding line data of the output buffer. For the empty data, the output processing section erases the corresponding line data of the output buffer. For the non-compressed data, the output processing section overwrites the line data of the (n+1)th band on the corresponding line data of the output buffer.
REFERENCES:
patent: 4751742 (1988-06-01), Meeuer
patent: 5068725 (1991-11-01), Ogawa et al.
patent: 5317413 (1994-05-01), Yanagihara
patent: 5513128 (1996-04-01), Rao
Fuji 'Xerox Co., Ltd.
Garcia Gabrial
Moore David K.
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