G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 7/556 (2006.01) G06F 1/03 (2006.01) G06F 7/52 (2006.01)
Patent
CA 2453168
The invention is directed toward a digital VGA that is implemented in the logarithmic domain. The digital VGA exploits logarithmic properties to replace a complex multiplier of a conventional digital VGA with a simple and inexpensive adder. Moreover, additional techniques are described to significantly reduce the size of one or more lookup tables (LUTs) implemented within the digital VGA. In this manner, the invention can realize a simple, low cost digital VGA.
L'invention porte sur un amplificateur de gain en tension numérique qui est mis en oeuvre dans le domaine logarithmique et exploite des propriétés logarithmiques pour remplacer un multiplicateur complexe d'un amplificateur de gain en tension numérique traditionnel par un sommateur simple et bon marché. L'invention porte également sur des techniques additionnelles visant à réduire considérablement la taille d'une ou plusieurs tables de consultation installées dans l'amplificateur de gain en tension numérique. De cette façon, on peut obtenir, grâce à cette invention, un amplificateur de gain en tension numérique de faible coût.
Challa Raghu
Kasturi Nitin
Schlegel Nikolai
Qualcomm Incorporated
Smart & Biggar
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