Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1992-04-17
1996-06-18
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
341 76, H03M 302
Patent
active
055282393
ABSTRACT:
The output gates of a delta-sigma modulator can generate i(t) transient signal in the power supply lines of a delta-sigma modulator. These i(t) spikes, which would otherwise produce non-linearities which can be coupled into the frequency band of interest of the modulator, are made to be linear by using return-to-zero data encoding and by providing multi-bit outputs to the delta-sigma modulator in which the output states all have equal numbers of logic ones at the output lines for each of the output states.
REFERENCES:
patent: 4227185 (1980-10-01), Kronlage
patent: 4459591 (1985-01-01), Loomis
patent: 4509037 (1985-04-01), Harris
patent: 4746899 (1988-05-01), Swanson et al.
patent: 4972436 (1990-01-01), Halim et al.
patent: 5012244 (1991-04-01), Welland et al.
patent: 5030954 (1991-07-01), Ribner
patent: 5039989 (1991-08-01), Welland et al.
patent: 5079550 (1992-01-01), Sooch et al.
patent: 5084702 (1992-01-01), Ribner
patent: 5150220 (1992-09-01), Yunus
patent: 5196853 (1993-03-01), Abbiate et al.
Del Signore et al., "A Monolithic 20-b Delta-Sigma A/D Converter," IEEE J. Solid-State Circuits, SC-25, Dec. 1990.
Adams, "Design and Implementation of an Audio 19-Bit Analog-to-Digital Converter Using Oversampling Techniques," J. Audio Eng. Soc., 32, Mar. 1986.
AT&T Bell Laboratories, Transmission Systems for Communications, 5th edition, 1982, Chapter 29.
Cataltepe, "Digitally Corrected Multi-bit .DELTA..SIGMA. Data Converters," et al., IEEE Proc. ISCAS '89, May 1989.
Carley, "A Noise-Shaping Coder Topology for 15-Bit Converters," IEEE J. Solid-State Circuits, SC-24, Apr., 1989.
AT&T Bell Laboratories, Transmission Systems for Communications, 5th edition, 1982, Chapter 28.
Swanson Eric J.
Thompson Charles D.
Crystal Semiconductor Corporation
Hoff Marc S.
Lott Robert D.
LandOfFree
Low noise transmission of output data from a delta-sigma modulat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low noise transmission of output data from a delta-sigma modulat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low noise transmission of output data from a delta-sigma modulat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-225934