Device, method for processing RF signal, and optical disk...

Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting

Reexamination Certificate

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Reexamination Certificate

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07773480

ABSTRACT:
A device for processing a radio frequency (RF) signal of an optical disk drive includes a high-pass (HP) filter, an RF variable gain amplifier (VGA), an RF analog-digital converter (ADC), and a digital module. The HP filter filters the RF signal and is capable of selectively utilizing one of a first cut-off frequency and a second cut-off frequency. The RF VGA amplifies the filtered RF signal. The RF ADC converts the amplified RF signal into a digital code. The digital module is capable of executing a first function and a second function with the digital code. The HP filter utilizes the first cut-off frequency when the digital module desires to execute the first function, and the HP filter utilizes the second cut-off frequency when the digital module desires to execute the second function.

REFERENCES:
patent: 7035187 (2006-04-01), Li et al.
patent: 7426160 (2008-09-01), Spruit et al.
patent: 2007/0280088 (2007-12-01), Lin et al.

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