The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 1998
Filed:
Jun. 24, 1996
Robert J Kunz, Boise, ID (US);
David Alan Bartle, Boise, ID (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
The printing speed of a page printer is modified relative to rasterization execution time (RET) for display commands that define images to be printed on each page strip of a page. The printer includes a variable frequency clock for producing a plurality of clock frequencies for modifying the printing speed. A processor compares the RET for each page strip with a threshold value. When a complex page strip is found whose RET exceeds the threshold, the variable frequency clock is appropriately controlled to generate a lower frequency clock signal to the print engine. The lower frequency signal causes the print engine to operate at a modified (slower) rate for a sufficient amount of time on any previously queued page strip(s) to provide an extended time frame for allowing the complex page strip to be rasterized. Printing speed is slowed, but rasterization time (clock speed) for the complex page strip is not slowed. Accordingly, display commands in the complex page strip are rasterized within the extended amount of time provided by the reduced print speed, thereby preventing a print overrun.