Other

Bryron L Zerphy

Eric J Zerphy

Meghanad D Wagh

In accordance with the invention, there is described a sign display panel made up of a controller connected in a serial communication network with a set of display units. Each of the display units receives messages from the controller and detects errors in the messages. The controller sends a series of communication integrity messages to the set of display units. When a display unit receives the communication integrity message, it sends it to the next display unit or back to the controller. If a display unit does not receive a communication integrity message within a set time interval, the display unit sends an error message that is received by the controller.

Dynamic message sign display panel communication error detection and correction

In accordance with the invention, there is described systems and methods for rapidly refreshing a sign display panel. Each display unit of the sign display panel receives a plurality of frames from the controller and stores each frame in memory. The controller then sends a plurality of display instructions. Upon receiving each display instruction, each display unit processes a frame from memory to update the display output device.

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Macungie, PA, United States of America

Bryron L Zerphy