Abstract:
PROBLEM TO BE SOLVED: To improve use efficiency of the recording medium by guaranteeing safety of record data while making a plurality of users share a recording medium. SOLUTION: This server provides a storage area of a storage device that is a computer resource to a client via a network. The server has: a disk array 40 comprising a plurality of magnetic disk devices; and a data processing part 30 dividing writing data included in a writing request in response to the writing request from the client, connecting the data after the division to process them such that original information can be obtained, and writing the data such that a portion of the plurality of magnetic disk devices storing the writing data of the respective clients overlap each other. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To embed electronic watermarks different for each access in digital contents without increasing the load of a content server as much as possible. SOLUTION: This content server is provided with an electronic watermark embedded content storing part 13 in which a plurality of digital contents embedded with different electronic watermarks are stored and a finger print executing part 14 for reading the plurality of digital contents from the electronic watermark embedded content storing part 13, and for switching and compounding the digital contents for each specific part to add the very beginning information to the digital contents by using a bit string formed by the electronic watermark embedded in every portion of the digital contents. COPYRIGHT: (C)2004,JPO