Ultrasonic image processor

Details Ultrasonic image processor Ultrasonic image processor

1982-12-28

1986-04-15

Chin, Gary

Boots, shoes, and leggings

358112, 364575, 364734, G06F 1562, G06F 1568

Patent

active

045831840

ABSTRACT:
By repeatedly adding items of picture element data representing an identical region of a serial picture element input which arrives serially in time, an improvement is effected in the S/N ratio of a periodic signal mixed in irregular, randomly occurring noise. A memory is provided for storing items of picture element data of one frame at storage locations corresponding to each of the picture elements. For each new item of picture element data that arrives, an item of picture element data of the same region accumulated and stored prior to said arrival is readout of the memory and added to the newly arrived data. The resulting sum is then written back into the memory at the same storage location. Thus, a single memory can be made to store picture data of enhanced S/N ratio merely by increasing slightly the bit storage capacity per data item in conformance with the number of times frames are accumulated.

REFERENCES:
patent: 4204226 (1980-05-01), Mistretta et al.
patent: 4222048 (1980-09-01), Johnson
patent: 4359728 (1982-11-01), Mahony
patent: 4361043 (1982-11-01), Engle
patent: 4375671 (1983-03-01), Engle
patent: 4408228 (1983-10-01), Mahony
"On the Enhancement of the SNR of Repetitive Signals by Digital Averaging", by Z. Kovacs: IEEE Transactions on Instrum., vol. 28, No. 2, Jun. 1979, pp. 152-155.
"A Programmable Digital Signal Averager", by Srinivasan et al., J. Phys. E: Sci. Instrum., vol. 13, No. 12, Dec. 1980, pp. 1263-1265.
"Data-Smoothing Digital Interface Between a High-Speed Transient Recorder and a Slow Signal Averager" by Spencer et al., Rev. Sci. Instrum. vol. 52, No. 6, Jun. 1981, pp. 940 and 941.

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