Communications: electrical – Visual indication – Using light emitting diodes
Reexamination Certificate
2006-07-29
2009-02-24
Goins, Davetta W (Department: 2612)
Communications: electrical
Visual indication
Using light emitting diodes
C340S815400, C340S815420, C340S907000, C345S001100, C345S046000, C345S055000, C345S082000, C345S204000
Reexamination Certificate
active
07495576
ABSTRACT:
A plurality of common, modular panels attach to a support frame carrying power and data connections for an electronic display sign. LEDs are used as the light mechanisms for illumination of said sign. Each modular panel is under separate microcontroller control and includes its own on-board memory. The electronic display sign includes a master control element that connects to a PC or laptop computer for loading data or programs into the memory of each modular board. The master control sends out commands or data that is interrogated by every microcontroller on each modular panel of the entire sign such that only the panel with a unique identification number will process data intended therefore. The on-board memory allows for the creation of a virtual screen such that each modular panel of the entire sign is rendering the entire message being displayed on said sign even though each modular panel may only be actually illuminating a portion of said message on the LEDs of each panel. A novel auto-baud scheme re-sets the baud rate for the sign for each packet of data received. A novel identifier assignment scheme allows the end user to assign serial numbers to each panel after the sign is attached to the support frame.
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Maskeny Donald D
West Jeffery L
Goins Davetta W
Larson James E.
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