Absolute value arithmetic circuit

Details Absolute value arithmetic circuit Absolute value arithmetic circuit

1991-07-19

1993-06-01

Nguyen, Long T.

Boots, shoes, and leggings

36471510, G06F 738

Patent

active

052166287

ABSTRACT:
An absolute value arithmetic circuit for computing the absolute value of two binary input signals, includes: a computing circuit for obtaining a difference between the two input signals, a 1's complementor for non-inverting or inverting an output from the computing circuit in accordance with a positive sign bit or a negative sign bit of the output, a priority encoder for searching an output from the 1's complementor for the position of a first "0" bit from the least significant digit of the output and delivering an encoder output indicating the position of the first "0" bit, and a bit inverting circuit for inverting and delivering a bit row from the least significant digit bit to the "0" bit in the output from the 1's complementor in accordance with the encoder output, and directly delivering a bit row from a bit higher than the "0" bit to the most significant digit bit of the output without inverting them.

REFERENCES:
patent: 4218751 (1980-08-01), McManigal
patent: 4761759 (1988-08-01), Nakagawa
patent: 4924421 (1990-05-01), Seguchi
patent: 5027308 (1991-06-01), Sit et al.
patent: 5040136 (1991-08-01), Kanoh
patent: 5075879 (1991-12-01), Anderson

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