Wobble signal reproducing circuit

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of initiation of pause mode

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C369S124110, C369S047250, C369S124100

Reexamination Certificate

active

11546289

ABSTRACT:
The present invention has an object to stably reproduce wobble signals of all disks of CD-R/RW, DVD-R/RW and DVD-RAM by one wobble signal reproducing circuit. In the wobble signal reproducing circuit, an AGC (AUTOMATIC GAIN CONTROL) circuit for equating a push-pull circuit output of a wide range and an RF amplitude of an optical detector output of two systems obtained by push-pull, and an AGC (AUTOMATIC GAIN CONTROL) circuit for making a wobble amplitude uniform are provided with a function to hold a gain or to change over a response time constant, and at the time of reproduction of the DVD-R/RW, a land pre-pit region is detected by the push-pull output to hold AGC (AUTOMATIC GAIN CONTROL) or change over a response time constant. Besides, in an address information recording region (PID region) at the time of reproduction of the DVD-RAM, the AGC (AUTOMATIC GAIN CONTROL) is held or the response time constant is changed over.

REFERENCES:
patent: 5495465 (1996-02-01), Arisaka
patent: 6160773 (2000-12-01), Maegawa et al.
patent: 8-185664 (1996-07-01), None
patent: 8-194969 (1996-07-01), None
patent: 10-340537 (1998-12-01), None
patent: 11-025486 (1999-01-01), None
patent: 11-096570 (1999-04-01), None
patent: 11-203681 (1999-07-01), None
patent: 11-283248 (1999-10-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Wobble signal reproducing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wobble signal reproducing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wobble signal reproducing circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3854252

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.