Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-04-18
2006-04-18
Hong, Harry S. (Department: 2642)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C375S345000, C375S346000, C455S296000
Reexamination Certificate
active
07031685
ABSTRACT:
Detection output from a detection circuit17is converted to digital detection data D1and supplied to an AGC circuit AGCC and a noise clamping circuit NCC that are formed by digital circuits. In the AGC circuit AGCC, a digital low pass filter19generates DC voltage data D2from the detection data D1. A digital divider20performs division of the DC voltage data D2by the reference detection level data D3indicating the detection data level. A digital multiplier multiplies the division results D4by the detection data D1to generate multiplication data D5that is constant irrespective of a variation in the detection data D1. In the noise clamping circuit NCC, a digital comparator23compares the size of the preset voltage data D6and that of the multiplication data D5. A selector circuit24selectively outputs preset voltage data D6or multiplication data D5to generate signal wave data DAF.
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Hong Harry S.
Pioneer Corporation
Sughrue & Mion, PLLC
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