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:
Jul. 17, 1979
Filed:
Apr. 03, 1978
Applicant:
Inventor:
Charles W Ying, Andover, MA (US);
Assignee:
Atex, Incorporated, Bedford, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
A visual output assembly connects to a bus in a data processing system. The assembly includes a memory, plural visual display units and a multiplexing unit that connects to the bus, the memory and each visual display unit. Priority arbitration circuitry in the multiplexing unit receives request signals for access to the memory from the bus and from each of the visual display units. The priority arbitration circuitry controls address and data path switching circuits to establish appropriate address and data paths between the memory and the selected one of the bus and visual display units.