Information recording apparatus, information recording method, information record medium, information reproducing apparatus, information reproducing method, information transmitting apparatus, and information transmitting method

• US 8,422,850 B2
• Filed: 02/28/2008
• Issued: 04/16/2013
• Est. Priority Date: 04/09/2007
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Nakane, Kazuhiko
• Primary Examiner(s): Tran, Thai
• Assistant Examiner(s): Park, Sunghyoun
• Application Number:
  US12/532,671
• Publication Number:
  US 20100067871A1
• Time in Patent Office: 1,874 Days
• Field of Search: None
• US Class Current: 386/232
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2020/1222 ECC block, i.e. a block of error correction encoded symbols which includes all parity data needed for decoding pure error correction aspects G11B20/18
• CPC Class Codes: G11B 2020/1232 sector, i.e. the minimal addressable physical data unit
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2020/1295 wherein the focus is on the read access speed
• CPC Class Codes: G11B 2220/235 Multilayer discs, i.e. multiple recording layers accessed from the same side
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/40 Combinations of multiple record carriers
• CPC Class Codes: G11B 2220/45 Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

An apparatus and a method, which make it possible to collect a plurality of the contents authored for DVD to record easily them on a large-capacity information record medium and to increase a data rate in reproducing the recorded contents, perform the processes of: creating source packets from a disk image file; collecting them to form arrangement units 320; collecting them to form ECC clusters; collecting sectors of the DVD to form a sector group, thereby storing it while bringing it into correspondence with a predetermined number of source packets; adding a control packet to this to form units of conversion; collecting them to bring them into correspondence with an integral number of the arrangement units 320; and storing a cluster-number, at which a leading sector of the sector group of the DVD is stored in the control packet; wherein the source packets are brought into correspondence so that a leading portion of the file system area coincides with both a leading portion of the arrangement unit and a leading portion of the error correction cluster and the disk image file is recorded using units of the length so that the length causes a boundary of the units of conversion to coincide with a boundary of the ECC clusters.

Claims

1. An information transmitting apparatus comprising:

a computer processor programmed to;

convert content data, authored according to the DVD format and including a video signal, to a program stream by compression coding the content data into units of converting;

divide the program stream into packs with a constant length which are units to be stored on a sector of a recording medium;

perform error-correction coding on data of the divided packs by forming an error correction block from the predetermined number of sectors; and

divide the error-correction coded data, which is arranged in an order for recording on a track of the recording medium, into units for storing in respective packets of a transport stream; and

a transmitter for transmitting the transport stream in units of the packet through a network to an information recording apparatus capable of performing a recording operation on the recording medium;

wherein;

each of the units, into which the error-correction coded data is divided for storing in the respective packets of the transport stream, is set to be an error correction code word when the error correction block is formed and the error-correction coding is performed,

the units of converting, into which the content data is converted, is set in such manner to allow an integer number of error correction clusters to be formed by the information recording apparatus from a predetermined number of consecutive packets after the transmitting,

each of the units of converting follows control bytes in the packet,

the sector group is formed by collecting the predetermined number of sectors, and

a cluster-number of the error correction cluster for storing a leading sector of the sector group is stored in the control packet.

2. An information transmitting method comprising the steps of:

converting content data, authored according to the DVD format and including a video signal, to a program stream by compression coding the content data into units of converting;

dividing the program stream to packs with a constant length which are units to be stored on a sector of a recording medium;

perform error-correction coding on data of the divided packs by forming an error correction block from the predetermined number of sectors;

dividing the error-correction coded data, which is arranged in an order for recording on a track of the recording medium, into units of storing in respective packets of a transport stream; and

transmitting the transport stream in units of the packet through a network to an information recording apparatus capable of performing a recording operation on the recording medium;

wherein each of the units, into which the error-correction coded data is divided for storing in the respective packets of the transport stream is set to be an error correction code word when the error correction block is formed and the error-correction coding is performed,

wherein the units of converting, into which the content data is converted, is set in such manner to allow an integer number of error correction clusters to be formed by the information recording apparatus from a predetermined number of consecutive packets after the transmitting,

each of the units of the converting follows control bytes in the packet,

the sector group is formed by collecting the predetermined number of sectors, and

a cluster-number of the error correction cluster for storing a leading sector of the sector group is stored in the control packet.