Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-05-13
2008-05-13
Lewis, David L. (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S039000, C345S046000, C315S291000, C315S169300, C340S815450
Reexamination Certificate
active
07372441
ABSTRACT:
A circuit is provided for over-driving a super-luminescent light emitting diode having a maximum forward continuous current rating. A power supply provides a pulse width modulated signal to an analog memory connected to the power supply and a pulse generator. The pulse generator includes a window comparator engaged with the analog memory, and is responsive to a portion of the pulse width modulated signal. A power driver that is controlled by the output of the pulse generator, is operably connected with the super-luminescent light emitting diode and with the power supply so as to energize the super-luminescent light emitting diode with a current that is above the maximum forward continuous current rating by between two and ten times that rated current. A signal is also provided along with a method of over-driving a super-luminescent light emitting diode. An inverter and timer are coupled to the pulse generator and an array of light emitting diodes that operate at time intervals determined by the timer that are wholly distinct from time intervals when the at least one super-luminescent light emitting diode is over-driven.
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555 Timer Tutorial, Tony van Roon, 1995, pp. 1-27.
Gallagher Shawn
Johnson Matthew
Zink Timothy
Apicelli Samuel W.
Duane Morris LLP
Lewis David L.
Trafcon Industries, Inc.
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