Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1983-03-03
1987-08-25
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340792, 340701, G09G 300
Patent
active
046896040
ABSTRACT:
A visual display apparatus for generating an apparent visual message includes an annular drum which is rapidly rotated. Three columnar light banks are secured to drum face and each include a plurality of lights. A microprocessor and power unit is mounted to and rotates with the drums and activates the lights to generate a message or character on the drum which defines one message display frame. The microprocessor includes a program for each of the light banks for individually energizing the lights. The program includes a message program and a fixed program for processing of the message data. The message scrolls across the drum in the direction opposite the drum rotation, and the total message may consist of a plurality of frames. Each display frame covers less than the drum periphery and includes a start column and a spaced end column. A position sensor initiates the processor and generates a train of timing signals, one for each drum travel display column. During each revolution the processor sequences and operates the light banks with the alignment thereof with each display column. The light banks are spaced two message columns and the processor sequentially monitors the start column and end column of each frame to restrict activation of the light banks to those within the frame and therebetween enables all three banks to produce the desired color message presentation.
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Official Gazette; 9/4/84, Notice re: Bell: U.S. Pat. No. 4,477,044.
Curtis Marshall M.
S-V Development Ltd.
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