Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2008-02-08
2010-08-10
Psitos, Aristotelis M. (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
Reexamination Certificate
active
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.
Chen Chien Ming
Chen Chih-Ching
Cheng Yuh
Huang Chih-Chien
Mediatek Inc.
Psitos Aristotelis M.
Thomas Kayden Horstemeyer & Risley
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