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. 16, 1997
Filed:
Jul. 06, 1994
Applicant:
Inventor:
Charles J Holloman, Fairfield, CT (US);
Assignee:
Trans-Lux Corporation, Norwalk, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 83 ; 345200 ; 348802 ;
Abstract
The apparatus is an interface to convert an input analog video signal (real-time) into an output to drive a matrix of light-emitting-diodes. Alternately, a digital video signal can be received, bypassing the analog-to-digital converters. The apparatus is readily configurable to various sizes of matrix sizes and uses a logic board to arrange the data so that low speed components may be used. Two frame buffers alternately receive data in random access order in accordance with the physical and data format of the LED display, and output data by direct memory access methods.