Patent ID: 6101583
Filing Date: 2000-08-08
Classification: G06F

Abstract:
A digital signal processor for operatively coupling to an external storage device which is connected to an external processing device, said digital signal processor being connected to the external storage device and the external processing device via a system bus, the digital signal processor comprising:a data buffer segment operatively coupled to the external storage device;a cache storage control segment operatively coupled to the external storage device and said data buffer segment, for transferring a sequence of sample data to and from the external storage device and the data buffer segment via said system bus, said cache storage control segment including means for acquiring a right to access the external storage device and means for transferring plural sample data as a cache block to and from the external device and said data buffer segment via said system bus, said plural sample data constituting at least a part of said sequence of the sample data stored in at least one of the external storage device and the data buffer segment, whereby said digital signal processor is accessible to the external storage device without need of a dedicated local memory device of a type similar to said external storage device; anda digital data processing segment connected to said data buffer segment, for processing sample data in said data buffer segment.