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. 16, 1997
Filed:
Jun. 01, 1995
Osamu Hosotani, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A screen display circuit, comprising: a register 13 storing data designating a screen whereon a pattern is displayed, and a position of the pattern on the screen; a RAM 4 storing data designating the pattern; first and second buffers 15, 16 which temporarily stores and output addresses of the patterns to be displayed respectively on the first and second screens; a ROM 5 storing a plurality of font data; a switch 17 which connects the ROM 5 alternately to the first buffer 15 and the second buffer 16; and a mixing circuit 22 which composes dot data of the patterns to be displayed on the first and second screens outputted alternately from the ROM 5, whereby the first screen and the second screen, whereon dot patterns are respectively displayed, are composed and displayed on a display apparatus. As a result, hardwares can be reduced and a manufacturing cost can be reduced.