Apparatus for estimating the square of digital samples

Details Apparatus for estimating the square of digital samples Apparatus for estimating the square of digital samples

G - Physics

06

F

354/151

G06F 7/38 (2006.01) G06F 7/552 (2006.01) H04N 5/60 (2006.01)

Patent

CA 1263190

RCA 83,206 Abstract of the Disclosure Apparatus for estimating the square of a multi-bit digital sample having a value (A+B) segments the sample into a most significant bit (MSB) portion having the value A, and a least significant bit (LSB) portion having a value B. The LSB portion is added back to the sample to produce a sample having a value of (A+2B), which sample is applied to the multiplicand input of a multiplier circuit. The MSB portion of the sample is coupled to the multiplier input of the multiplier circuit which produces the product (A2+2AB) as an estimate of the square of the sample. Estimating the square in this manner significantly reduces the size of the multiplier circuit.

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