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. 07, 2001
Filed:
Aug. 13, 1999
Applicant:
Inventor:
Chen-Ming Chang, Taipei Hsien, TW;
Assignee:
Primax Electronics Ltd., Taipei Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/34 ;
U.S. Cl.
CPC ...
G09G 5/34 ;
Abstract
The present invention provides an image scrolling system for scrolling an image frame contained in a window which is displayed in a monitor of the system. The image scrolling system comprises a scrolling signal generator for generating scrolling signals to perform scrolling of the image frame. Each of the scrolling signals is first converted into a corresponding two-dimensional vector which is then converted to a displacement vector. The displacement vector is added with a current coordinate of the image frame displayed within the window to obtain a next coordinate, and the image frame is scrolled to the next coordinate.