G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/08 (2006.01) G11B 7/007 (2006.01) G11B 7/085 (2006.01)
Patent
CA 2073323
In an optical recording medium driving apparatus, only a high frequency component corresponding to pits of an ID portion of an optical disk track is detected from a total signal representing the total amount of reflectedlight by a high pass filter. With this high frequency component clamped so that a potential at a maximum point becomes a definite potential, a change in the amount of light represented by the total signal corresponding to pits is detected and a phase pit signal is generated. In response to this phase pit signal, a signal component corresponding to pits is removed from the total signal, thereby generating a pit removal signal.
Fuji Hiroshi
Kojima Kunio
Matoba Hirotsugu
Nomura Masaru
Yamaguchi Takeshi
Fuji Hiroshi
G. Ronald Bell & Associates
Kojima Kunio
Matoba Hirotsugu
Nomura Masaru
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