Apparatus for and method of controlling photo diode using...

Details Apparatus for and method of controlling photo diode using... Apparatus for and method of controlling photo diode using...

2004-08-03

2008-08-26

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S053270

Reexamination Certificate

active

07417940

ABSTRACT:
An optical pick up, including: a laser diode which outputs a light in response to an input current; a photo diode which receives the light and outputs a voltage; a digital potentiometer which adjusts the voltage output by the photo diode according to a voltage adjusting signal; and a controller which outputs the input current, sets a first reference voltage to be outputted by the photo diode according to the light, and outputs the voltage adjusting signal to the digital potentiometer according to a difference between the output voltage and the reference voltage.

REFERENCES:
patent: 4584687 (1986-04-01), Howard
patent: 5119360 (1992-06-01), Minakuchi
patent: 5477557 (1995-12-01), Inaba et al.
patent: 5515350 (1996-05-01), Katayama
patent: 5751601 (1998-05-01), Tang et al.
patent: 6490047 (2002-12-01), Siu
patent: 6711189 (2004-03-01), Gilliland et al.
patent: 1419722 (2003-05-01), None
patent: 60-124981 (1985-07-01), None
patent: 62-114129 (1987-05-01), None
patent: 02-265033 (1990-10-01), None
patent: 03-142725 (1991-06-01), None
patent: 4-143927 (1992-05-01), None
patent: 7-326064 (1995-12-01), None
patent: 2000-69491 (2000-11-01), None
patent: 2002-70710 (2002-09-01), None
patent: 2002-96804 (2002-12-01), None
patent: WO 01/57969 (2001-08-01), None

Affiliated with

Also associated with

Rating

Apparatus for and method of controlling photo diode using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for and method of controlling photo diode using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for and method of controlling photo diode using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4003805