The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Mar. 06, 2002
Shogo Miyanabe, Tsurugashima, JP;
Hiroki Kuribayashi, Tsurugashima, JP;
Shogo Miyanabe, Tsurugashima, JP;
Hiroki Kuribayashi, Tsurugashima, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A pick up irradiates light beams at specified intervals in the tangential direction of the main track to be reproduced and both of adjacent tracks on a diskon which tracks are formed. A CTC unituses the delay amount Δd of the respective sample-value series corresponding to the reproduction signal RFm from the main track and reproduction signals RF, RFfrom both adjacent tracks to correct the delay, then outputs a CTC output signal from which the cross-talk component has been removed. In addition, when adjusting the delay, the CPUapplies a disturbance to the control signal for the actuator of the servo-control unitand changes the delay amount Δd within a specified range of change. At this time, the CPUsets the delay amount Δd, which minimizes the jitter value found by the jitter detection unitaccording to the CTC output signal, for the CTC unit. This makes it possible to set the optimum delay amount Δd when adjusting the delay, even when there is little steady cross-talk.