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:
Aug. 22, 1985
Jules A Eibner, Dresher, PA (US);
Jean-Pol Zundel, Berwyn, PA (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A plurality of language display control cards are provided for insertion into the motherboard of a personal computer, each card having connector means to which a CRT display and a keyboard may be connected. Each card controls its display independently of the others so that different data may be displayed on each display screen. A display control card includes a font memory for storing the digital video representations of ideographic characters of a standard code, and an ASCII memory for storing the digital video representations of ASCII characters. In addition a loadable font memory is provided for storing the digital video representations of characters which are not commonly used characters of a language but may be frequently used in a particular application. The outputs of the three memories may be serially interspersed so that the CRT may display ASCII, or ideographic characters or a mixture of both. To reduce the size of the font memory, a translator memory is provided for converting non-sequential numbers representing the characters of a standard internal code used by the PC into a sequence of consecutive numbers for addressing the font memory.