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:
Jan. 14, 1992
Filed:
Aug. 08, 1990
Kunio Yoshida, Nara, JP;
Sharp Kabushiki Kaisha, , JP;
Abstract
An apparatus for calculating the cube root of a number has: a first memory for initially storing a cube root extraction number from which the cube root is to be extracted; a second memory for initially storing a first number which is predetermined based on said cube root extraction number; a third memory for initially storing a second predetermined number; a fourth memory for initially storing a third predetermined number; and a fifth memory for storing a number. The relation in size between the number stored in the first memory and the number stored in the second memory is judged. When the number stored in the first memory is not smaller than the number stored in the second memory, the number stored in the second memory from the number stored in the first memory, a number generated from the number stored in the third memory is added to the number stored in the second memory means, and a fourth predetermined number is added to the number stored in the fifth memory. When the number stored in the first memory is smaller than the number stored in the second memory, a number generated from the number stored in the fourth memory is substracted from the number stored in the second memory, and the number stored in the fifth memory is shifted to the left. Until predetermined conditions are met, the above processes are repeated, and the number stored in said fifth memory is determined as the cube root.