Digital signal overflow correction apparatus

Details Digital signal overflow correction apparatus Digital signal overflow correction apparatus

1985-07-30

1988-01-26

Malzahn, David M.

Boots, shoes, and leggings

364737, G06F 1100

Patent

active

047220660

ABSTRACT:
When a positive or a negative overflow error condition is encountered, the present invention substitutes the most positive or most negative value for the erroneous sample. The sign bit of a potentially erroneous value is inverted to form the MSB of the substitute value, and this value is, in turn, inverted and expanded to form the n-l LSB's of the substitute value. If an overflow error condition is detected, the erroneous value is replaced by the substitute value.

REFERENCES:
patent: 3725687 (1973-04-01), Heightley
patent: 3970833 (1976-07-01), Gehweller
patent: 4215415 (1980-07-01), Kanemasa
patent: 4282581 (1981-08-01), Bondurant
patent: 4511922 (1985-04-01), Lewis, Jr.
patent: 4592008 (1986-05-01), Nopper
Nguyen, "Practical Hardware Solutions for 2's Complement Arithmetic Problems", Computer Design, Jul. 1979, pp. 105-112.
Drumm, "Saturation Adder Solves Overflow Problems in 2nd-Order Filters", Electronic Design, vol. 28, No. 18, Sep. 1, 1980, pp. 167-168.

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