Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Reexamination Certificate
2006-07-11
2006-07-11
To, Doris H. (Department: 2643)
Telephonic communications
Substation or terminal circuitry
Conversion of signal form
C379S196000, C379S198000, C379S268000, C379S269000, C370S355000
Reexamination Certificate
active
07076053
ABSTRACT:
The PBX system includes an analog to digital, and digital to analog, (A/D) conversion where the sample size and the sample rate are selectively adjustable. The A/D structure includes registers which hold values indicating the sample size and the sample rate for the conversion. When the A/D structure is configured, the A/D structure reads the values in the register and configures itself to the sample rate and sample size indicated by the registers. When the sample size and sample rate is to be changed, the values in the registers are changed and the A/D structure is reconfigured.
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Dryer Paul
McCormack Michael S.
3Com Corporation
McGlew & Tuttle PC
Pham Tuan
To Doris H.
LandOfFree
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