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. 06, 1991
Filed:
Jul. 31, 1987
Roy E Thoma, III, Houston, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A method and apparatus for controlling two or more video display devices using a single display controller, where the display devices generally require different control data. Basic display control parameters are stored in a memory and, when the controller is to be switched from one display to another, the parameters are read from the memory into a substitution device. The substitution device receives modification control signals which depend on the newly selected display device and modifies the display control parameters before re-programming the display controller. The display controller then contains the parameters as appropriately modified for the currently controlled display device. The operator can switch from one monitor to another by generating an appropriate control signal, whereupon the substitution device again reads the control parameters from the memory, modifies them according to the newly selected display device, and re-programs the display controller using the modified parameters.