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:
Apr. 29, 1997
Filed:
Apr. 23, 1996
Russell Campbell, Boise, ID (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A printer apparatus and method for operating a digital printer are provided which utilize a super-pixel bit map set containing a plurality of pixel pattern bit maps, each pixel pattern bit map defining the on or off condition for a plurality of individual pixels which make up a super-pixel which forms a part of a printed area, such as for gray or color shading. The method includes accepting an input value for a particular super-pixel to be printed, the input value being from one of a set of available input values defined by an input array set; providing a threshold array which defines available pixel pattern bit maps which can be used in printing super-pixels for a particular print job; producing a key array which assigns a different key identifier to each of the available pixel pattern bit maps defined by the threshold array; associating an input value with a key identifier; using the key identifier to access or build and access a suitable pixel pattern bit map for a particular super-pixel to be printed; and transferring the pixel pattern bit map to effect printing of the super-pixel being printed.