Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1994-10-11
1997-01-28
Gaffin, Jeffrey A.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341118, H03M 112, H03M 106
Patent
active
055981607
ABSTRACT:
A level-controlling unit consisting of an inverter controls a level of a given pulse signal, the level controlling being performed in a predetermined manner. An analog-signal producing unit consisting of a low-pass filter produces an analog signal by integrating the pulse signal having undergone the level controlling. An analog-signal processing unit consisting of A-D converter processes the analog signal with a dynamic range thereof so as to supply a digital signal, the dynamic range being defined by a predetermined reference level. The predetermined manner is such that a substantial possible level variation extent of the analog signal received by the analog-signal processing unit corresponds to the dynamic range.
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Yoichi Saito, "Adaptive Compensation of Various Linear Distortions for .pi./4-QPSK Differential Detection," Technical Report of the Institute of Electric Information and Communication Engineers, RCS92-101 (Jan. 1993).
Gaffin Jeffrey A.
Kost Jason L. W.
Ricoh & Company, Ltd.
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