Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1998-04-14
2000-07-11
Tokar, Michael
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
341159, H03M 300
Patent
active
060879688
ABSTRACT:
An analog to digital converter comprises an asynchronous sigma-delta modulator generating an asynchronous duty cycle modulated square wave, sampling means to synchronously sample the asynchronous square wave and a decimating digital filter to convert the samples from the sampling means into a desired PCM-format.
REFERENCES:
patent: 4954824 (1990-09-01), Yamada et al.
patent: 5274372 (1993-12-01), Luthra et al.
patent: 5396244 (1995-03-01), Engel
patent: 5504751 (1996-04-01), Ledzius et al.
patent: 5640416 (1997-06-01), Chalmers
patent: 5963160 (1999-10-01), Wilson et al.
Shinichi Fukuda, "A New Digital PLL for the Class I Partial Response Channel," IEEE Transactions, Sep. 1996.
Engel Roza, "Poly-Phase Sigma-Delta Modulation," IEEE Transactions, Nov. 1997.
"Analog-to-Digital Conversion via Duty-Cycle Modulation", by Engel Roza, IEEE Transactions on Circuits and Systems, vol. 44, No. 11, Nov. 1997, pp. 907-914.
"The Application of Delta Modulation to Analog-to-PCM Encoding", by David J. Goodman, The Bell System Technical Journal, vol. 48, No. 2, Feb. 1969, pp. 321-343.
"Asynchronous Delta Sigma Modulation", by C.J. Kikkert et al., Proceedings of the IREE, vol. 36, Apr. 1975, pp. 83-87.
"Recursive Bitstream Conversion", by Engel Roza, IEEE Transactions on Circuits and Systems, vol. 40, No. 2, Feb. 1993, pp. 65-72.
Biren Steven R.
Tokar Michael
U.S. Philips Corporation
Wamsley Patrick
LandOfFree
Analog to digital converter comprising an asynchronous sigma del does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analog to digital converter comprising an asynchronous sigma del, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog to digital converter comprising an asynchronous sigma del will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-546447