Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2006-04-11
2006-04-11
Maung, Nay (Department: 2684)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S311000, C375S316000, C375S346000
Reexamination Certificate
active
07027791
ABSTRACT:
In an analog baseband signal processing system and method, gain and offset are measured for each of a plurality of stages. The DC content inherent to the amplifier and filter circuitry is measured by known means. A digital number for each gain and offset level is generated and converted to digital, numerical form of correction of each stage, and converted back to analog form to make the compensation without corrupting near DC signals. In a preferred form, first and second channels of the analog baseband signal processor are provided for in-phase and quadrature channels in a direct conversion, solid-state telephone receiver.
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Blakely , Sokoloff, Taylor & Zafman LLP
Maung Nay
Orgad Edan
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