Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2007-12-11
2007-12-11
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038100, C372S038010, C372S038070
Reexamination Certificate
active
11250126
ABSTRACT:
An inexpensive laser drive device which is capable of driving a laser for emission of an appropriate amount of light. Electric currents supplied from a supply current control device formed in an integrated circuit to a plurality of predetermined ports of the integrated circuit are turned on and off by switching devices in response to a signal from a signal output device of the supply current control device, and the on currents are supplied, as a driving current, from the supply current control device to a laser beam-emitting device through corresponding ones of the predetermined ports and resistors externally attached to these ports. A generator device formed in the integrated circuit generates a pulse signal for turning on and off a laser beam based on image data.
REFERENCES:
patent: 5373518 (1994-12-01), Uchiyama et al.
patent: 6246659 (2001-06-01), Suzuki et al.
patent: 6586771 (2003-07-01), Suzuki
patent: 6724793 (2004-04-01), Nagara
patent: 2005/0089069 (2005-04-01), Ozasa et al.
patent: 3332916 (2002-07-01), None
Canon Kabushiki Kaisha
Harvey Minsun Oh
Rossi Kimms & McDowell LLP
Zhang Yuanda
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