The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1993
Filed:
Sep. 28, 1990
Chikahiro Hori, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A priority encoder with two inputs, an exponent input and a mantissa input, forming a floating-point number, wherein the priority encoder outputs the smallest value after comparing the two inputs and the output from the priority encoder is input to a substractor and a barrel shifter. The barrel shifter shifts the mantissa input before the completion of the subtract operation. First, the mantissa input is left-shifted by the left barrel shifter under the selection of the selector controlled by the control signal in accordance with the value of the exponent input. The first result from the barrel shifter is stored in the data holding circuit after shifting it to the right by one bit with the right direction 1-bit shifter. Next, the mantissa input is shifted to the left by the left direction barrel shifter. The second result of the barrel shifter is not stored in the data holding circuit. One of the above two results is selected by the selector.