Digital filter system with anomaly detection and indication

Details Digital filter system with anomaly detection and indication Digital filter system with anomaly detection and indication

1990-02-22

1993-03-16

Mai, Tan V.

Boots, shoes, and leggings

36472416, G06F 738

Patent

active

051950499

ABSTRACT:
A digital filter, and more particularly a digital filter such as a transversal filter, is disclosed which is comprised of digital filter modules and provided with a function to detect the occurrence of anomalies such as overflow (a state in which excessively large or small absolute values exceeding an allowable limit are produced during arithmetic operations).

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patent: 4507725 (1985-03-01), Christopher et al.
patent: 4920507 (1990-04-01), Takeda
Landaurio et al, "On Overflow Detection and Correction in Digital Filters", IEEE Trans. on Computers, vol. C-24, #12, pp. 1226-1228, Dec. 1975.
Drumm, "Saturation Adder Solves Overflow Problems in 2nd-Order Filters", Electronic Design, vol. 28, #18, pp. 167-168, Sep. 1980.
Liu, "Effect of Finite Word Length on the Accuracy of Digital Filters-A Review", IEEE Trans. on Circuit Theory, vol. CT-18, No. 6 Nov. 1971, pp. 670-677.
Introduction to Adaptive Filtering, pub Gendai Kogakusha, Sep. 10, 1987, pp. 6-7.
Inserting a ghost-canceler-control/reference signal in the television broadcast signal, Nikkei Electronics, Oct. 19, 1987, v 432, pp. 213-225.

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