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:
Aug. 27, 1991
Filed:
Feb. 12, 1991
William Joy, Palo Alto, CA (US);
Serdar Ergene, San Jose, CA (US);
Szu-Cheng Sun, Santa Clara, CA (US);
Sun Microsystems, Inc., Mountain View, CA (US);
Abstract
A computer output system having a first full screen bitmapped memory, a second full screen bitmapped memory, logic circuitry for providing input signals for writing information to be displayed by an output device to each position of the first memory, logic circuitry for storing in the second memory the positions of each position of the first memory to be written to the output device, and logic circuitry for comparing the signal stored at each position of the first memory and the signal stored at the same position of the second memory to determine whether information at the position is to be written to the output device.