Phase angle data-trigonometric function value converter circuit

Details Phase angle data-trigonometric function value converter circuit Phase angle data-trigonometric function value converter circuit

1997-07-16

1999-12-28

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 738

Patent

active

060094494

ABSTRACT:
Disclosed is a phase angle data-trigonometric function value converter circuit for computing a trigonometric function value corresponding to an angle that an angle of 360 degrees is divided into n equal parts, where n is an integer, which has: means for converting the integer n into angle data represented by binary system; a sine value data memory which stores sine values corresponding to the angle data from zero degree to 90 degrees and outputs sine values corresponding to the angle data to be input thereto; a cosine value data memory which stores cosine values corresponding to the angle data from zero degree to 90 degrees and outputs cosine values corresponding to the angle data to be input thereto; a selector to which the sine values output from the sine value data memory and the cosine values output from the cosine value memory are input and which selects the sine values or the cosine values according to the angle data and outputs them; and means for adding a polarity sign to the sine values or cosine values output from the selector according to the angle data.

REFERENCES:
patent: 4827442 (1989-05-01), Mehrgardt et al.
patent: 5249204 (1993-09-01), Funderburk et al.
patent: 5276633 (1994-01-01), Fox et al.
patent: 5774082 (1998-06-01), Chu et al.
patent: 5831488 (1998-11-01), Nakajima et al.

Affiliated with

Also associated with

Rating

Phase angle data-trigonometric function value converter circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase angle data-trigonometric function value converter circuit , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase angle data-trigonometric function value converter circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2389889