Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006117664Aexternal-prioritypatent/JP4466602B2/en
Priority claimed from JP2006117665Aexternal-prioritypatent/JP4466603B2/en
Priority claimed from JP2006117663Aexternal-prioritypatent/JP4466601B2/en
Application filed by Victor Company Of JapanfiledCriticalVictor Company Of Japan
Publication of TW200735094ApublicationCriticalpatent/TW200735094A/en
Application grantedgrantedCritical
Publication of TWI327728BpublicationCriticalpatent/TWI327728B/zh
The present invention aims to provide an optical disc inspecting apparatus and an optical disc inspecting method capable of accurately check if the address error between two adjacent recording layers at the same radius position in a recordable optical disc having a plurality of recording layers falls within a required specification. An inspection mean (112) is employed to find a maximum allowable error address containing the maximum allowable error of a layer-1 track position corresponding to a recording-start address (or recording-end address) pre-recorded in a layer-0 recording area at the same radius position. If a layer-1 address read by an address demodulation mean (113) is the layer-1 maximum allowable error address and a signal level obtained by a signal detection mean (111) is the same as a predetermined level obtained from a layer-0 reflective radiance in a layer-0 recording area (301), the inspection mean (112) regards the structure of the optical disc meeting the required specification.
TW095132020A2005-12-062006-08-30Method and apparatus for inspecting optical disc
TW200735094A
(en)
Displacement detecting method, displacement detecting device and calibrating method thereof, and recording device of information recording medium original disk
optical recording carrier, method for manufacturing the same, and, optical apparatus adapted to reproduce and/or record information from/to an optical recording carrier
Optical information recording medium, medium characteristic definition method, medium characteristic inspection method, signal detection method, signal detection circuit, and optical information recording/reproducing device
Legal Events
Date
Code
Title
Description
MM4A
Annulment or lapse of patent due to non-payment of fees