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:
Dec. 17, 1991
Filed:
Feb. 02, 1989
Hitachi, Ltd., Tokyo, JP;
Abstract
A display device which has a zooming function and is required to display a logical screen larger in size than a physical screen, is operated in the following manner. When an action for indicating a zooming command is taken, a first rectangular frame similar in shape to the logical screen, a second rectangular frame similar in shape to a logical area which is now displayed on the physical screen, and a third rectangular frame similar in shape to a logical area which is to be subjected to a zooming operation, are all displayed on the physical screen, and moreover the third rectangular frame can be moved to a desired position by means of a coordinate input device such as a mouse. Hence, the zooming operation and a desired logical area corresponding to the third rectangular frame placed at the desired position can be specified by a one-touch operation. Thus, the operation procedure becomes simple, and the operability of the display device is improved.