Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
2007-10-09
2007-10-09
Hindl, Nabil (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
Reexamination Certificate
active
10838660
ABSTRACT:
The address information of DVD-R or DVD-RW discs should be identified more accurately. Therefore, the detector is implemented with a sample/hold device for storing a reference value to be used for a sampling window. An optional integrator is used for comparing the integrated signal with a reference value to decide on the presence of a land pre-pit. The timing for controlling both the sample/hold device and the integrator is derived from a phase locked loop that is locked to the incoming groove wobble signal (TWin) by performing a clock multiplication with a predetermined factor. Advantageously, no band pass filter has to be included, which would need to be tuned according to the variations of the disc speed. Furthermore, the proposed land pre-pit detector is less affected by variations of the input amplitude, as no limiter is used.
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patent: 7084802 (2006-08-01), Suetake
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Abstract of Japan Publication 2000207744 Publication Date 28-078-00 App. Date Dec. 28, 1998 App. No. 10373363 Applicant-Ricoh Co Ltd. Inventor-Kubo Hiroshi Int. C1. G11B 7/005 Title Pit Signal Detecting Circuit Copyright 2000, JPO.
Abstract of Japan Publication 2002109742 Publication Date Apr. 12, 2002 App. Date Sep. 28, 2000, App. No. 2000296266 Applicant-Matsushita Electric Ind. Co. Ltd. Inventor—Matsuura Takumi Int. C1. G11B 7/0045 G11B 7/004 G11B 7/005 Title Land Prepit Detection Device And Optical Disk Apparatus Using The Same Copyright 2002, JPO.
Article ECMA Standardizing Inf. And Comm. Systems Title 80 mm (1,23 Gbytes per side) and 120 mm (3,95 Gbytes per side) DVD-Recordable Disk (DVD-R) Stand ECMA—279 Dec. 1998—4 pages double sided.
Fried Harvey D.
Hindl Nabil
Laks Joseph J.
Thomson Licensing
Verlangieri Patricia
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