Patent ID: 6292875
Filing Date: 2001-09-18
Classification: G06F,H04N

Abstract:
A control device for a storage device in which data streams are respectively divided into unit data, which are distributed to storage parts and are sequentially read therefrom for every unit data, said control device comprising:a buffer memory which stores data to be written into the storage parts and read from the storage parts;an input/output control part which causes the unit data read from the storage parts in an access cycle corresponding to a bit rate to be stored in the buffer memory and causes the unit data stored in the buffer memory at the bit rate to be written into the storage parts; andan input/output interface part which establishes an interface between the storage device and an external apparatus and reads and writes the unit data from and into the buffer memory so that the bit rate is changed in accordance with a signal applied to the control device, thereby data can consecutively be transferred between the buffer memory and the external apparatus; wherein:a group is defined which includes a minimum number of storage parts which enables a given service;the storage device includes a plurality of such groups; andsaid control device comprises control parts respectively provided to the plurality of groups, and a controller which controls said control parts.