Beamformed ultrasonic imager with delta-sigma feedback control

Details Beamformed ultrasonic imager with delta-sigma feedback control Beamformed ultrasonic imager with delta-sigma feedback control

2005-03-15

2005-03-15

Tokar, Michael (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000, C341S172000, C341S144000

Reexamination Certificate

active

06867720

ABSTRACT:
A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.

REFERENCES:
patent: 3946320 (1976-03-01), Overbury
patent: 4772871 (1988-09-01), Suzuki et al.
patent: 5030954 (1991-07-01), Ribner
patent: 5144308 (1992-09-01), Norsworthy
patent: 5203335 (1993-04-01), Noujaim et al.
patent: 5241310 (1993-08-01), Tiemann
patent: 5446917 (1995-08-01), Krisciunas et al.
patent: 5461389 (1995-10-01), Dean
patent: 5477859 (1995-12-01), Engeter
patent: 5521499 (1996-05-01), Goldenberg
patent: 5565867 (1996-10-01), Tiemann
patent: 5668777 (1997-09-01), Schneider
patent: 6208189 (2001-03-01), Freeman et al.
patent: 6252531 (2001-06-01), Gordon et al.
patent: 6366227 (2002-04-01), Rigby
patent: 62-224345 (1987-10-01), None
Norman, O., A Band-Pass Delta-Sigma Modulator for Ultrasound Imaging at 160 MHz Clock Rate, 31 (12) IEEE Journal of Solid-State Circuits 2036-41 (Dec. 1996).
Baseri, R., et al., Testing Adaptive Jamming Cancellation Algorithms using a Digital Beamforming Array, Proceedings fo the 1996 IEEE National Radar Conference (May 13-15, 1997).

Affiliated with

Also associated with

Rating

Beamformed ultrasonic imager with delta-sigma feedback control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Beamformed ultrasonic imager with delta-sigma feedback control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beamformed ultrasonic imager with delta-sigma feedback control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3396786