Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1980-11-02
1983-10-04
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358112, 358140, 128660, 73620, H04N 521, H04N 530, G01N 2900, H04N 502
Patent
active
044082282
ABSTRACT:
Noise is reduced in the television display of an A trace in an ultrasonic scanner system by integrating digital data representing the magnitude of video signals corresponding to the echos of ultrasonic pulses. The digital integration is accomplished on a point by point basis by summing digital data with stored digital data from previous video signals. Preferably, a capture memory is utilized with a digital summer for integrating the data while another memory periodically receives the integrated data and functions to refresh the television display. In another embodiment, two memories can alternate in capturing the integrated data and in refreshing the display.
REFERENCES:
patent: 3651253 (1972-03-01), Morgand et al.
patent: 4064530 (1977-12-01), Kaiser et al.
patent: 4212072 (1980-07-01), Huelsman
Abbott and Thurstone, "Multi-Scan Processing in a Phased Array Imaging System", IEEE 1978 Ultrasonics Symposium Proceedings, pp. 220-224, Sep. 25-27, 1978.
Thurstone and Abbott, "Actual Time Scan Conversion and Image Processing in a Phased Array Ultrasound Imaging System", IEEE 1977 Ultrasonics Symposium Proceedings, pp. 247-249.
General Electric Company
Martin John C.
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