Scan converter for ultrasonic sector scanner

Details Scan converter for ultrasonic sector scanner Scan converter for ultrasonic sector scanner

1979-09-13

1981-01-13

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358112, 343 55C, 343 5DP, 367 11, 367 97, 367117, 128653, H04N 502, G01S 710, G01S 968, H01B 1000

Patent

active

042452503

ABSTRACT:
The input data format in a single-sector or multi-sector scanner imaging system is chosen such that angulated scan lines intersect a lateral line at equal increments, and along the scan lines the echo signal is sampled at different rates whereby sampling points are along parallel raster lines. Successive scan lines are stored in adjacent columns of a row-column oriented digital memory. Echo data is read out of memory row by row at a variable rate to convert the read-out data back to sector geometry. The image is displayed in real time in a cathode ray tube.

REFERENCES:
patent: 3653044 (1972-03-01), Breeze et al.
patent: 3765018 (1973-10-01), Heard et al.
patent: 3858085 (1974-12-01), Dildy, Jr. et al.
patent: 4002827 (1977-01-01), Nevin et al.
patent: 4058001 (1977-11-01), Waxman
patent: 4111055 (1978-09-01), Skidmore
patent: 4135140 (1979-01-01), Buchner
patent: 4159462 (1979-06-01), Rocha et al.
patent: 4167753 (1979-09-01), Lynk
Zehner: "Core Memory Digital Signal Processing Applied to Improved Sonar Displays", pp. 579-580, IEEE Trans. on Comm. V-Com-19, Aug. 1971.

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