Raymond C Ashoori

US Patent:

56401248, Jun 17, 1997

Filed:

Oct 20, 1995

Appl. No.:

8/546497

Inventors:

Raymond C. Ashoori - Cambridge MA

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H03B 104
H04N 5213

US Classification:

327551

Abstract:

A system and method of eliminating systematic noise in a stimulus-response system. A data acquisition time frame is triggered during which a desired response signal is acquired. The triggering initiates the systematic noise which is stored along with the desired response signal. A stimulus signal is provided to the stimulus-response system in order to induce the desired response signal. A variable delay is introduced between the triggering of the data acquisition time frame and the provision of the stimulus signal. Individual sets of response signals are acquired which respectively correspond to each introduced variable delay. The sets of acquired response signals are shifted so that the stimulus signals are equivalent in time with respect to each set of acquired response signals. The shifted sets of acquired response signals are summed in order to convolute in time the systematic noise.