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:
Jul. 08, 2003
Filed:
Oct. 13, 2000
Yinong Ding, Plano, TX (US);
Ching-yu Hung, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A coprocessor ( ) for synthesizing a signal from the sum of sinusoids preferably includes an electronic system ( ) having a host processor ( ) that forwards frame boundary parameters to the coprocessor ( ). Parameter registers ( ) in coprocessor ( ) store synthesis parameters for iteratively deriving amplitude and phase values for each sample point within a data frame. Adders ( ) generate current amplitude from one addition, and current phase value from two additions, with the results stored back into parameter registers ( ). A sine function calculator circuit ( ), which may use a CORDIC technique, receives the current amplitude and phase values, and generates a digital component signal for the current sample point for one of the sinusoids. Digital component signals are accumulated at the sample point in a data sample buffer ( ) and output at an output ( ).