Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
2004-05-14
2008-09-23
Wellington, Andrea (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
C369S047140, C369S053120
Reexamination Certificate
active
07428195
ABSTRACT:
An information reproduction apparatus and method according to the present invention are provided so as to solve the problem that signal quality is degraded in a normal signal part when always performing a correction of a transient in reproducing information recorded in a medium, and the sag cancellation controller (103) detects whether the pickup output signal (S101) is normal or abnormal, and the sag cancellation part (104) performs a correction of a transient only during a period when the pickup output signal (S101) is detected as abnormal, thereby preventing degradation of signal quality, which is caused by performing a correction of a transient on a normal signal part, and an appropriate correction of a transient can be performed on an abnormal signal part, thereby enabling a stable reproduced signal (S104) to be obtained.
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Aida Kazutoshi
Ogura Youichi
Takahashi Toshihiko
Battaglia Michael V
Matsushita Electric - Industrial Co., Ltd.
Wellington Andrea
Wenderoth , Lind & Ponack, L.L.P.
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