Print engine with pipeline decoding

Details Print engine with pipeline decoding Print engine with pipeline decoding

2005-12-27

2005-12-27

Tran, Douglas (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Dot matrix array

C358S001150, C358S001900

Reexamination Certificate

active

06980323

ABSTRACT:
A print engine/controller (10) configured to be coupled with others to drive an ink drop printhead (33). It has an interface (27) at which to receive compressed page data. Image decoders (28, 88) decode compressed image planes image decoders to perform an expansion, in pipeline fashion, for the received compressed page data. A half-toner/compositer (29) composites respective strips of the decoded image planes and sends output to a printhead interface (32). A printhead interface (32) interfaces with the printhead. A synchronization signal generator (89,90) may output a synchronization signal that is used to synchronize print engine/controllers. One printhead interface (32) preferably acts as master generating the synchronization signal to synchronize all the print engine/controllers to drive the printhead at any one or more of higher speed, higher input resolution, higher outlet resolution or wider format. The half-toner/compositor (29) scales input image planes under control of a margin unit (57) set the print engine/controller to establish print data for a strip only of the image, the image being built from the respective strips from the multiple print engine/controllers.

REFERENCES:
patent: 6068362 (2000-05-01), Dunand
patent: 6447113 (2002-09-01), Silverbrook et al.
patent: 936069 (1999-08-01), None
Derwent Abstracts Accession No. 96-093252/10, JP08-002034A (Hitachi Ltd) Jan. 9, 1996.
Patent Abstracts of Japan JP07-132594 (Seiko Epson Corp) May 23, 1995.
Patent Abstracts of Japan M-771, p. 51, JP63-188055A (Canon Inc) Aug. 3, 1988.
Derwent Abstract Accession No. 93 286671/36, SU 1762124A (Cyverbetics Inst) Sep. 15, 1992.

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