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:
Oct. 08, 1996
Filed:
Dec. 29, 1993
Darwin Chang, Cupertino, CA (US);
Other;
Abstract
A video signal controller is used with a dual sync monitor of a digital computer. The video signal controller has a tuner to generate conventional television signals. The signals from the tuner and from the computer are supplied to a multiplexer which switches between them and supplies the output signal to a dual sync monitor. The controller has three modes of operation. In a first mode, conventional television signals are displayed on the dual sync monitor. In a second mode, conventional computer signals are displayed on the dual sync monitor. Finally, in a third mode, multi video signals may be displayed to achieve, for example, picture-in-picture for display on the monitor. Finally, a method of processing the television signals for picture-in-picture display which greatly reduces the overhead required by the CPU is also disclosed.