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. 13, 2004
Filed:
May. 11, 2000
Prashant Gandhi, Sunnyvale, CA (US);
James R. Hochschild, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An infinite impulse response (IIR) digital filter and method of performing the same is disclosed. The digital filter may be realized by way of a programmable logic device, such as a digital signal processor ( ), or alternatively by way of dedicated logic including adders ( ) and shifters ( ). In either case, addition operations ( ) are interleaved among first and second output sample values (y , y ), so that the resulting addition ( ) may be carried out with adder circuitry of the same precision as the signal input (x ) and signal output (y ). Carry control circuitry ( ) is provided to efficiently incorporate magnitude truncation quantization.