Data processor and data processing system with internal memories
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTAKEFUMI YOSHIKAWA, HIRONORI AKAMATSU, SATOSHI TAKAHASHI
Life of this patent
Estimating the term…
Abstract
A processing unit for carrying out specified data processing operations while performing read/write operations on data in an internal memory is coupled to a memory control unit for performing read/write operations on data in an external memory. Data exchange is carried out between the internal and external memories through the memory control unit. Data requiring a longer processing time or data frequently accessed is mapped into the internal memory in accordance with the data exchange, thereby improving overall memory system performance.
Claims16
A data processor, comprising:
- an internal memory;
- and
- a processing unit for performing specified data processing operations while performing read/write operations on said internal memory,
- wherein a memory control unit for performing read/write operations on an external memory and a buffer part for storing data from said internal memory or from said external memory are controllably coupled to said processing unit,
- and wherein data exchange is carried out between said internal memory and said external memory by temporarily storing data from said internal memory or from said external memory to said buffer part.
A data processing system, wherein a plurality of data processors are coupled together through memory control units of said data processors,
- and wherein data exchange is carried out between internal memories of said data processors.
A data processing system, wherein memory control units of a plurality of data processors are provided, each said memory control unit having a plurality of access ports for accessing an external unit,
- and wherein said data processors are coupled together through said access ports,
- and wherein data exchange is carried out between internal memories of said data processors.
Dependencies are inferred from the claim text.