Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2007-06-05
2007-06-05
Jeanglaude, Jean Bruner (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S141000, C375S247000
Reexamination Certificate
active
11408941
ABSTRACT:
In a first-order complex band-pass filter, multiplexers are alternately switched over between time intervals of phases A and B, where the multiplexers includes two multiplexers provided at input and output stages, and a multiplexer provided in a feedback circuit of each of first-order filters and being switching over whether to invert a sign of a feedback signal. Then in a circuit part sandwiched between the multiplexers, a processing performed by an I circuit part and a processing performed by a Q circuit part are alternately switched over so that a sign of a signal inputted to an adder is inverted.
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Hagiwara Hiroyuki
Hayakawa Akira
Jingu Yoshitaka
Kobayashi Haruo
Kobayashi Kazuyuki
Birch, Stewart, Kolasch and Birch LLP
Jeanglaude Jean Bruner
Semiconductor Technology Academic Research Center
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