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:
Sep. 04, 1990
Filed:
Oct. 20, 1986
Keiichi Nakane, Yokohama, JP;
Tadashi Kuwabara, Yokohama, JP;
Naoya Ikeda, Yokohama, JP;
Hiroyuki Koreeda, Yokohama, JP;
Hiroaki Aotsu, Yokohama, JP;
Masaki Kawase, Katsuta, JP;
Yujiro Tatsuno, Hitachi, JP;
Naomichi Nonaka, Yokohama, JP;
Kazunari Suzuki, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Microsoftware Systems, Inc., Yokohama, JP;
Abstract
A central processing unit, a main memory for storing graphic or character data, an external memory, an input device for inputting the graphic or character data, a shared memory for temporarily storing the graphic or character data read by the central processing unit, a display processing means for preparing a plurality of display data displayed on a display from the graphic or character data on the shared memory, and a display memory for storing the plurality of display data are connected to a bus. The display memory, the shared memory, and the external memory have first, second and third save areas for temporarily saving the overlapped display data when the plurality of display data are overlapped. The main memory is provided with a first control table for controlling display position, mutual priority for display, and a save area during overlap, regarding each of the plurality of display data stored in the display memory. The display processing means controls to display the plurality of display data on the display using the first table, the first, second and third save areas, and the display memory. In the first, second and third save areas, the first save area has highest priority and the third save area has lowest priority.