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:
Nov. 26, 1991
Filed:
Nov. 20, 1990
Yutaka Satoh, Nagoya, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A display apparatus, which is connected with a control device, receives from the control device synchronization (sync) signals and a video signal in synchronism with the sync signals having a prescribed display area. The display apparatus generates a deflection signal on the basis of the sync signals in a deflection signal generating circuit to scan a CRT. The display apparatus adds additional video signal outside of the display area of the video signal on the basis of the sync signals in a video signal adding circuit so that the display area for the video signal is expanded, and supply the video signal thus formed to the CRT. Thus, in the display apparatus, a white background area can be added outside of the display area in the CRT.