Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-09-18
2010-10-19
Bullock, Jr., Lewis A (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C382S244000
Reexamination Certificate
active
07818359
ABSTRACT:
In order to output amplitude data with the clock frequency higher than the clock frequency of phase data, the direct digital synthesizer for transmission and detection comprises: a transmitting phase for outputting a first phase data with a first clock frequency; a curtailing unit for outputting a second phase data with a second clock frequency smaller than the first clock frequency, and outputting additional data for compensating for phase information disappeared with curtailing process; an interpolating unit for outputting a third phase data with a third clock frequency larger than the first frequency by implementing interpolating process to the second phase data, and a detecting waveform for outputting amplitude data in accordance with the third phase data. The detecting signal amplitude data can be outputted with the third clock frequency higher than the second clock frequency of the second phase data transmitted.
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Lionel Cordesses, Direct Digital Synthesis: A Tool for Periodic Wave Generation (Part 1), 2004, pp. 50-54.
SIPO, China issued in connection with corresponding CN Application No. 200610139527.8 on Feb. 12, 2010.
Armstrong Teasdale LLP
Bullock, Jr. Lewis A
GE Medical Systems Global Technology Company LLC
Hughes Kevin
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