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:
Mar. 21, 1995
Filed:
Jun. 17, 1991
Arun Johary, San Jose, CA (US);
Morris E Jones, Saratoga, CA (US);
Chips and Technologies, Inc., San Jose, CA (US);
Abstract
A method and apparatus for improving the quality of a color-to-gray scale conversion is disclosed. A table is generated providing a visually correct conversion of all possible background/foreground colors. This table is then stored. In operation, after the attribute byte describing the foreground and background colors is retrieved from memory, it is used to access the stored conversion table, wherein its gray scale equivalent is stored. The stored equivalent is then used to generate the gray scale LCD display. In other embodiments, multiple copies of the table are stored, making multi-frame operations very efficient in operation.