| US 7,552,159 B2 | ||
| Transform calculation device | ||
| Olivier Gay-Bellile, Paris (France); and Xavier Marchal, Coubevoie (France) | ||
| Assigned to NXP B.V., Eindhoven (Netherlands) | ||
| Appl. No. 10/474,120 PCT Filed Apr. 08, 2002, PCT No. PCT/IB02/01253 § 371(c)(1), (2), (4) Date Oct. 07, 2003, PCT Pub. No. WO02/084514, PCT Pub. Date Oct. 24, 2002. |
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| Claims priority of application No. 01 04861 (FR), filed on Apr. 10, 2001. | ||
| Prior Publication US 2004/0111458 A1, Jun. 10, 2004 | ||
| Int. Cl. G06F 17/14 (2006.01) | ||
| U.S. Cl. 708—400 [708/404] | 7 Claims |
| 1. A device for calculating discrete transforms, the device comprising:
a processing circuit
for calculating a first result using first samples and using a first type of transform from a plural number of discrete transform
types; and
for calculating a second result using second samples that correspond to the first calculated result and using a second type
of transform of the plural number of discrete transform types;
a first memory circuit for
storing the first samples and
for storing the second samples;
a second memory circuit independent from the first memory circuit for recording intermediate calculation results from the
first type of transform and second type of transform, and
a control circuit for configuring the first and second memories as a function of a plural number of discrete transforms used
during a first processing of the first type of transform.
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