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:
Feb. 15, 1994
Filed:
Nov. 07, 1991
Tai Shiraishi, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A panel display apparatus includes a V-RAM, a display controller, a low-pass filter and a panel display unit. Digital video signals read from the V-RAM by the display controller are input to the low-pass filter. Then, of the input digital video signals, high frequency components in spatial frequency characteristic thereof are removed, as required, by the low-pass filter under control of the display controller and the resulting digital video signals are fed to the panel display unit. Thus, satisfactory images are displayed on the panel display unit under the control of the display controller in accordance with the digital video signals from the low-pass filter whether the images are characters and graphics or natural pictures.