Matsushita Electric Industrial Co., Ltd.

Hirofumi Ide

Hiroshi Sugimoto

Hiroshi Ueda

Yuji Takagi

Hideshi Ishihara

Takahiro Nagai

Kenzo Ishibashi

Kenji Takauchi

Keiichi Kawashima

A recording/reproducing apparatus includes: a first storage section for storing data structure information which includes encrypted data; a special information holding section for holding special information associated with the data structure information; and a controller for controlling the first storage section and the special information holding section. The data structure information is associated with the special information such that the special information is updated in response to an update of the data structure information, or such that the data structure information is updated in response to an update of the special information. The controller controls movement of the encrypted data from the first storage section to a second storage section, and the controller updates the special information such that a mismatch occurs between the special information obtained before the movement of the encrypted data and the special information obtained after the movement of the encrypted data.

Recording/reproducing apparatus, data moving method, and data deletion method

A method for reading data from an information recording medium having a plurality of address regions, includes the steps of: performing a reading operation for all of designated address regions among the plurality of address regions while holding read error information regarding the read error in the case where a read error occurs during reading of data from one of the plurality of address regions; transferring the read data to a data conversion device for converting the read data; and transferring the read error information to the data conversion device.

Drive, method for reading data, information recording medium reproduction apparatus, and method for reproducing data having reading errors

A control adjustment method for adjusting a control of a recording/reproduction apparatus for a disc-shaped recording medium is provided, wherein the control is adjusted in response to an environmental change inside the recording/reproduction apparatus, such as a temperature change, the control adjustment method comprising the steps of: requesting an execution of the control adjustment; determining whether to inhibit or approve the execution of the control adjustment; and executing the control adjustment in the case where the execution of the control adjustment is approved in the step of determining the execution of adjustment.

Method for adjusting control operation in an optical disc recording device

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Hyogo, Japan

Hirofumi Ide