G - Physics
01
N
349/47
G01N 29/00 (2006.01) G01S 7/52 (2006.01) G01S 7/531 (2006.01) G01S 15/89 (2006.01) G06F 17/00 (2006.01)
Patent
CA 1131757
EPL 78-1 ABSTRACT A Scan Converter for use with an Ultrasonic Imaging System is disclosed, which permits the buffering of sweep address and video data with five bits of information. In essence, the propogation path of the Ultrasonic pulses is resolved into a pair vectoral components while the propogation path media is defined by successive contiguous body segments which are to be respectively displayed as video picture elements. A series of first signals indicate the crossing of segment boundaries in the vectoral direction having the faster rate of boundary crossings. A second signal is produced having a unique value which indicates a boundary crossing by the pulse in the other vectoral direction. Reflections of the Ultrasonic pulse are sampled at a rate determined by the first signals; i.e., the rate at which segment boundaries are crossed in the first vectoral direction. The sample values are held for storage in memory. The memory includes a matrix of memory location associated with respective picture elements. The one coordinate of the memory address is successively incremented with the storage of the held values. The second coordinate of the address is incremented by the unique value of the forementioned second signal; in other words, when a segment boundary is crossed in the slower vectoral direction.
338529
Cribbs Robert W.
Engle Gary L.
Litton Industrial Products Inc.
Macrae & Co.
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