Image reading device for an optical device

Details Image reading device for an optical device Image reading device for an optical device

2006-03-14

2006-03-14

Tran, Thang V. (Department: 2653)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal level detecting using a reference signal

C369S059210, C369S124110

Reexamination Certificate

active

07012872

ABSTRACT:
When an optical disc is set to the motor, the slice level is set to a slice level Sk as a reference slice level and a measured jitter value A (S0, S1) is produced. The slice level is incremented in steps of a fixed quantity Si (S2). Then, a measured jitter value B obtained at the incremented slice level is compared with the previous measured jitter value A (S3, S4). This sequence of process is repeated, and when the measured jitter value A is smaller than the counter value, it is judged that the jitter changes its quantity varying direction to a decreasing direction. Then, the incrementing operation of the slice level is immediately stopped, and the slice level is decremented in steps of another fixed quantity Sd (<Si). The previous measured jitter value C is compared with a measured jitter value D after the slice level is decremented (S5to S8). When the measured jitter value C is smaller than the counter jitter value, it is judged that the slice level detected at that time is an optimum slice level.

REFERENCES:
patent: 6747924 (2004-06-01), Muramatsu
patent: 1119895 (1996-04-01), None
patent: 1221175 (1999-06-01), None
patent: 58-203635 (1983-11-01), None
patent: 2-58708 (1990-12-01), None
patent: 09-265629 (1997-10-01), None
patent: 10-188291 (1998-07-01), None
patent: 11-134800 (1999-05-01), None

Affiliated with

Also associated with

Rating

Image reading device for an optical device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reading device for an optical device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading device for an optical device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3565193