Data processing method, device thereof and program

• US 20050226600A1
• Filed: 04/02/2004
• Published: 10/13/2005
• Est. Priority Date: 04/04/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Shibata, Yoshiaki, Shinkai, Mitsutoshi
• Granted Patent: US 7,873,262 B2
• Time in Patent Office: Days
• US Class Current: 386/248
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 3/06 Digital input from, or digital output to, record carriers , e.g. RAID, emulated record carriers or networked record carriers
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/2537 Optical discs
• CPC Class Codes: G11B 27/002 Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing; transfer of record carriers from magazine G11B15/68, G11B17/10; G11B17/22
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

An optical disk device 4 for acquiring a file path to an AV file data corresponding to a designated data UMID in an optical disk, based on management data MD read out from the optical disk, in response to a request REQ from a computer 3 and further accessing AV file data recorded at a physical address acquired based on the file path.

Claims

1. A data processing method comprising:

a first step of reading management data indicating linked together identification data of material data recorded on the recording medium and the access path to the material data in said recording medium from said recording medium when a recording medium recording identification data for identifying each material data among material data under predetermined material management and said material data linked together is set at an access position and

a second step of providing said access path to said material data corresponding to said designated identification data in said recording medium in response to the request designating said identification data, based on said management data read out in said first step.

2. A data processing method as set forth in claim 1, further comprising:

a third step of updating said management data read out at said first step so as to further show the correspondence between said new identification data and an access path to said new material data at said recording medium when new material data and said identification data of said new material data are recorded on said recording medium linked together and

a fourth step of writing said management data updated at said third step on said recording medium.

3. A data processing method as set forth in claim 1, further comprising:

a third step of deleting data showing identification data of deleted material data and said access path linked together from said management data read out at said first step and generating new management data when material data recorded on said recording medium has been deleted and

a fourth step of writing said management data generated at said third step on said recording medium.

4. A data processing method executed by a computer based on an application program, a management program, and a file system program, comprising:

a first step by which said management program reads management data indicating linked together identification data of material data recorded on the recording medium and the access path to the material data in said recording medium from said recording medium when a recording medium recording identification data for identifying each material data among material data under predetermined material management and said material data linked together is set at an access position;

a second step by which said application program issues a request designating said identification data to said management program;

a third step by which said management program provides said access path to said material data corresponding to said designated identification data in said recording medium to said file system program in response to a request received at said second step, based on said management data read out at said first step, in response to said request for designating said identification data; and

a fourth step by which said file system program accesses said material data stored at a physical address of said recording medium, based on said access path received at said third step.

5. A program for making a computer execute:

a first routine of reading management data indicating linked together identification data of material data recorded on the recording medium and the access path to the material data in said recording medium from said recording medium when a recording medium recording identification data for identifying each material data among material data under predetermined material management and said material data linked together is set at an access position and

a second routine of providing said access path to said material data corresponding to said designated identification data in said recording medium in response to the request designating said identification data, based on said management data read out in said first routine.

6. A data management apparatus comprising:

a first means for reading management data indicating linked together identification data of material data recorded on the recording medium and the access path to the material data in said recording medium from said recording medium when a recording medium recording identification data for identifying each material data among material data under predetermined material management and said material data linked together is set at an access position and

a second means of providing said access path to said material data corresponding to said designated identification data in said recording medium in response to the request designating said identification data, based on said management data read out in said first means.