Information processing apparatus, information processing method, and program

• US 20100205145A1
• Filed: 02/02/2010
• Published: 08/12/2010
• Est. Priority Date: 02/09/2009
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Eshita, Shiro
• Granted Patent: US 8,250,087 B2
• Time in Patent Office: Days
• US Class Current: 707/609
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0674 Disk device
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Abstract

An information processing apparatus includes a controller that reads data by outputting, to a storage device having a data-recordable medium, a request for reading data recorded to the medium. Using file system management information corresponding to the data recorded to the medium, the controller generates, and outputs to the storage device, bit map data enabling the storage device to distinguish between the first cluster numbers where the starting data of read files are recorded, and the first cluster numbers where the starting data of non-read files are recorded.

Claims

1. An information processing apparatus, comprising:

a controller configured to read data by outputting, to a storage device having a data-recordable medium, a request for reading data recorded to the medium;

wherein

using file system management information corresponding to the data recorded to the medium, the controller generates, and outputs to the storage device, bit map data enabling the storage device to distinguish between the first cluster numbers where the starting data of read files are recorded, and the first cluster numbers where the starting data of non-read files are recorded.

2. The information processing apparatus according to claim 1, wherein

using the file system management information, the controller generates

a first cluster number list for recorded files, being a list of the first cluster numbers where the starting data is recorded for all files recorded to the medium, and

a first cluster number list for read files, being a list of the first cluster numbers where the starting data is recorded for selected files scheduled to be read,

and wherein

the controller generates the bit map data by cross-checking each entry in the first cluster number list for recorded files with those in the first cluster number list for read files.

3. The information processing apparatus according to claim 1, wherein

the controller generates, and outputs to the storage device, transmission data by setting header information with respect to the bit map data, the header information containing information for determining the validity of the bit map data.

4. The information processing apparatus according to claim 1, wherein

the controller generates the bit map data by applying file system management information in the form of a FAT (File Allocation Table) and directory entries.

5. The information processing apparatus according to any of claims 1 to 4, wherein

by executing processing to send a single command for reading data to the storage device, the controller acquires from the storage device the read data for one or a plurality of files identified by the bit map data.

6. A storage device, comprising:

a medium upon which data is recorded; and

a controller configured to write or read data with respect to the medium;

wherein

the controller receives, from a host, bit map data enabling the controller to distinguish between the first cluster numbers where the starting data of read files requested by the host are recorded, and the first cluster numbers where the starting data of non-read files are recorded, and

the controller reads files by applying the received bit map data and file system management information to analyze the clusters where the read files are recorded.

7. An information processing system, comprising:

a host configured to use file system management information corresponding to data recorded to a medium to thereby generate, and output to a storage device, bit map data enabling the storage device to distinguish between the first cluster numbers where the starting data of read files are recorded, and the first cluster numbers where the starting data of non-read files are recorded; and

a storage device configured to receive the bit map data from the host, and read files by applying the received bit map data and file system management information to analyze the clusters where the read files are recorded.

8. An information processing method executed in an information processing apparatus, comprising the steps of:

using file system management information corresponding to data recorded to a medium to thereby generate, and output to a storage device, bit map data enabling the storage device to distinguish between the first cluster numbers where the starting data of read files are recorded, and the first cluster numbers where the starting data of non-read files are recorded;

outputting a request read data recorded to the medium to the storage device; and

sequentially receiving from the storage device all data for the read files identified by the bit map data.

9. A program causing information processing to be executed in an information processing apparatus, comprising the steps of:

using file system management information corresponding to data recorded to a medium to thereby generate, and output to a storage device, bit map data enabling the storage device to distinguish between the first cluster numbers where the starting data of read files are recorded, and the first cluster numbers where the starting data of non-read files are recorded;

outputting a request read data recorded to the medium to the storage device; and

sequentially receiving from the storage device all data for the read files identified by the bit map data.