Pulse-width modulated drivers for light-emitting units of...

Details Pulse-width modulated drivers for light-emitting units of... Pulse-width modulated drivers for light-emitting units of...

2006-09-05

2006-09-05

Lee, Cheukfan (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Scanning

C358S505000, C358S475000

Reexamination Certificate

active

07102801

ABSTRACT:
A scanning mechanism of one embodiment of the invention is disclosed that includes light-emitting units, an integrating detector, and pulse-width modulated (PWM) drivers. Each light-emitting unit can emit colored light corresponding to a color of a color space. The integrating detector can detect the colored light emitted by the light-emitting units as reflected off a surface by integrating the colored light detected over a period of time. Each PWM driver can turn on a corresponding light-emitting unit at a duty cycle.

REFERENCES:
patent: 4390882 (1983-06-01), Ohara et al.
patent: 4806946 (1989-02-01), Ohnishi
patent: 5291307 (1994-03-01), Luckhurst
patent: 5363208 (1994-11-01), Ogino et al.
patent: 5909246 (1999-06-01), Terashima
patent: 6016038 (2000-01-01), Mueller et al.
patent: 6094689 (2000-07-01), Embry et al.
patent: 6448550 (2002-09-01), Nishimura
patent: 6545777 (2003-04-01), Amimoto
patent: 6785026 (2004-08-01), Terajima et al.
patent: 6806659 (2004-10-01), Mueller et al.
patent: 6839864 (2005-01-01), Mambakkam et al.
patent: 6867757 (2005-03-01), Nakamura
patent: 6917028 (2005-07-01), Hiromatsu
“Introduction to Pulse Width Modulation,” Michael Barr, Aug. 31, 2001, http://www.embedded.com/story/OEG20010821S0096.
European Search Report dated Nov. 11, 2005.

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