Disc driving device and wobble information detection method

G - Physics – 11 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G11B 7/007 (2006.01) G11B 7/005 (2006.01) G11B 7/24 (2006.01) G11B 20/12 (2006.01) G11B 20/14 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01)

Patent

CA 2431014

In an optical disc, a wobble signal is to be detected by a simple configuration. In the optical disc, the address information, modulated onto a sinusoidal carrier signal by adding even harmonics signals to said sinusoidal carrier signal and by changing the polarity of said harmonics signals, is formed into the wobble signal. In detecting the wobble signal from the optical disc to demodulate the address information, in a method for detecting the wobble signal, an even harmonics signal and data clocks are generated, and the even harmonics signal so generated are multiplied with the reproduced wobble signal. The resulting product signal is integrated every data clock. The sign of the digital information is verified based on the integrated value at an end edge of the data clock.

La présente invention a pour but de détecter, dans un disque optique, un signal d'oscillation au moyen d'une simple configuration. Dans le disque optique, les informations d'adresse, modulées sur un signal porteur sinusoïdal par addition des signaux harmoniques égaux audit signal porteur sinusoïdal et par modification de la polarité desdits signaux harmoniques, sont constituées en signal d'oscillation. La détection du signal d'oscillation provenant du disque optique afin de démoduler les informations d'adresse, dans un procédé servant à détecter le signal d'oscillation, un signal harmonique égal et des cycles d'horloge de données sont générés, et les signaux harmoniques égaux ainsi générés sont multipliés avec le signal d'oscillation reproduit. Le signal qui en résulte est intégré à chaque cycle d'horloge. Le signe des informations numériques est vérifié sur la base de la valeur intégrée au niveau d'une limite d'extrémité du cycle d'horloge.

LandOfFree

Say what you really think

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

Rating

Disc driving device and wobble information detection method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disc driving device and wobble information detection method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disc driving device and wobble information detection method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1861463

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