| 摘要 |
<P>PROBLEM TO BE SOLVED: To make control of a receiver and downloading possible by avoiding a problem of a cache by an OS. <P>SOLUTION: A mirror file number corresponding to a file to be requested is transmitted to a host OS. It is determined that whether or not data is cached in the host OS, and a block device is requested to read data of the mirror file number when it is determined that the transmitted data of the mirror file number is not cached. The block device acquires an address in memory in which actual content corresponding to a sector number is stored, acquires a sequence number corresponding to the content, changes the acquired sequence number and read data in the acquired address in the memory. Data obtained by adding the changed sequence number to the read data is provided to the host OS. When it is determined that data is cached in the host OS, the data cached in the host OS is provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
