Method and apparatus for implementing digital filters

Details Method and apparatus for implementing digital filters Method and apparatus for implementing digital filters

G - Physics

06

F

G06F 17/14 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2593948

In one embodiment, the present invention discloses an apparatus (600) and method for providing efficient implementations of Finite Impulse Response (FIR) digital filters (605). Specifically, a result from a FIR digital filter can be efficiently computed by using an AVG operation or instruction in conjunction with one or more other operations. The unique use of the AVG operation will allow FIR filters of various types, e.g., Types 1-4, to significantly reduce computational cycles.

Dans un mode de réalisation, l'invention concerne un appareil et un procédé pour mettre en place efficacement des filtres numériques à réponse finie à une impulsion (FIR). De manière plus spécifique, un résultat provenant d'un filtre numérique à FIR peut être informatisé efficacement au moyen d'un opération AVG ou d'une instruction, en association avec une ou plusieurs opérations. L'utilisation unique de l'opération AVG permet aux filtres à FIR de différents types, par exmple, des types 1 à 4, de réduire de manière significative les cycles informatiques.

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