| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved seek detector for an optical disk storage device, capable of generating a quadrature signal from a discrete-time TES signal and a discrete-time RF baseband signal. SOLUTION: In the optical disk storage device wherein user data is demodulated from a light beam reflecting off data pits in tracks of an optical disk storage medium, a quadrature seek signal is generated indicative of the light beam crossing tracks of the optical disk during a seek operation. The quadrature seek signal is generated from a discrete-time tracking error signal (TES) and a discrete-time RF baseband signal. The discrete-time TES is generated according to the mode of operation, compact disk (CD) or digital video disk (DVD). COPYRIGHT: (C)2008,JPO&INPIT
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