Information storage medium and information recording/playback system

• US 6,654,543 B2
• Filed: 08/28/2001
• Issued: 11/25/2003
• Est. Priority Date: 02/23/1998
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Yoshioka, You, Ando, Hideo
• Primary Examiner(s): NGUYEN, HUY THANH
• Application Number:
  US09/939,582
• Publication Number:
  US 20020025135A1
• Time in Patent Office: 819 Days
• Field of Search: 386/46, 386/95, 386/98, 386/111, 386/112, 386/125, 386/126
• US Class Current: 386/240
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 2020/1062 Data buffering arrangements, e.g. recording or playback buffers
• CPC Class Codes: G11B 2020/10722 wherein the size of the buffer is variable, e.g. by adding additional memory cells for coping with input streams that have high bit rates
• CPC Class Codes: G11B 2020/10805 involving specific measures to prevent a buffer overflow
• CPC Class Codes: G11B 2020/1275 Calibration data, e.g. specific training patterns for adjusting equalizer settings or other recording or playback parameters
• CPC Class Codes: G11B 2220/211 Discs having both read-only and rewritable or recordable areas containing application data; Partial ROM media
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/2575 DVD-RAMs
• CPC Class Codes: G11B 2220/455 said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 2220/913 Digital audio tape [DAT] format
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/036 Insert-editing
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/22 Means responsive to presence or absence of recorded information signals
• CPC Class Codes: G11B 27/329 : on a disc [VTOC]
• CPC Class Codes: H04N 21/4325 : by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8063 : using time division multiplex of the PCM audio and PCM video signals
• CPC Class Codes: H04N 9/888 : for signals recorded by pulse code modulation

Abstract

There are provided an information storage medium capable of real-time recording/playback of digital moving picture information, and a digital information recording/playback system using this medium. In a medium that records/plays back data including video data and control information, the control information (DA21 in FIG. 4; RTR_VMG in FIG. 30) includes information (VOBU entry in FIG. 31) for accessing a specific portion (VOBU) of the video data.

Claims

1. An information storage medium configured to have data recorded thereon and data reproduced therefrom by an information recording/reproducing apparatus, said data including control information and audio/video data, the information storage medium comprising:

an object recording area for recording an object which has a plurality of object units each including audio/video data; and

a control information recording area including;

an audio/video file information table having a first table area for storing a plurality of object stream information, and a second table area for storing audio/video file information configured to manage information of the audio/video data, and

the audio/video file information including object information which is configured to store information of a recorded unit of audio/video data, and an object information search pointer associated with the object information, wherein,

when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,

the predetermined number of times is represented by N,

the system transmission rate of said information recording/reproducing apparatus used to play back said audio/video data is represented by STR,

the physical transmission rate of a pickup head of said information recording/reproducing apparatus is represented by PTR,

an average seek access time of the pickup head of said information recording/reproducing apparatus is represented by SATa,

an average jump access time of the pickup head of said information recording/reproducing apparatus is represented by JATa,

an average rotation wait time of the pickup head of said information recording/reproducing apparatus is represented by MWTa, and

N is less than or equal to 1/{[1+STR/(PTR−

STR)]*(SATa+JATa+MWTa)}.

2. An information recording method for recording information on an information recording medium that includes,

an object recording area for recording an object which has a plurality of object units each including audio/video data, and

a control information recording area including:

an audio/video file information table having a first table area for storing a plurality of object stream information, and a second table area for storing audio/video file information configured to manage information of the audio/video data, and

the audio/video file information including object information which is configured to store information of a recorded unit of audio/video data, and an object information search pointer associated with the object information, wherein,

when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,

the predetermined number of times is represented by N,

the system transmission rate of an information recording/reproducing apparatus used to play back said audio/video data is represented by STR,

the physical transmission rate of a pickup head of said information recording/reproducing apparatus is represented by PTR,

an average seek access time of the pickup head of said information recording/reproducing apparatus is represented by SATa,

an average jump access time of the pickup head of said information recording/reproducing apparatus is represented by JATa,

an average rotation wait time of the pickup head of said information recording/reproducing apparatus is represented by MWTa, and

N is less than or equal to 1/{[1+STR/(PTR−

STR)]*(SATa+JATa+MWTa)},

the information recording method comprising;

recording the object in the object recording area; and

recording the audio/video file information table, the position information, and time information in the control information recording area.

3. An information reproducing method for reproducing information on an information recording medium that includes,

an object recording area including an object which has a plurality of object units each including audio/video data, and

a control information recording area including:

an audio/video file information table having a first table area including a plurality of object stream information, and a second table area for storing audio/video file information configured to manage information of the audio/video data, and

the audio/video file information including object information which is configured to store information of a recorded unit of audio/video data, and an object information search pointer associated with the object information, wherein,

when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,

the predetermined number of times is represented by N,

the system transmission rate of an information recording/reproducing apparatus used to play back said audio/video data is represented by STR,

the physical transmission rate of a pickup head of said information recording/reproducing apparatus is represented by PTR,

an average seek access time of the pickup head of said information recording/reproducing apparatus is represented by SATa,

an average jump access time of the pickup head of said information recording/reproducing apparatus is represented by JATa,

an average rotation wait time of the pickup head of said information recording/reproducing apparatus is represented by MWTa, and

N is less than or equal to 1/{[1+STR/(PTR−

STR)]*(SATa+JATa+MWTa)},

the information reproducing method comprising;

reproducing a portion of the audio/video data based on at least one of the audio/video file information table, the position information, and the time information.

4. An information reproducing apparatus for reproducing information on an information recording medium that includes,

an object recording area including an object which has a plurality of object units each including audio/video data, and

a control information recording area including:

an audio/video file information table having a first table area including a plurality of object stream information, and a second table area for storing audio/video file information configured to manage information of the audio/video data, and

the audio/video file information including object information which is configured to store information of a recorded unit of audio/video data, and an object information search pointer associated with the object information, wherein,

when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,

the predetermined number of times is represented by N,

the system transmission rate of an information recording/reproducing apparatus used to play back said audio/video data is represented by STR,

the physical transmission rate of a pickup head of said information recording/reproducing apparatus is represented by PTR,

an average seek access time of the pickup head of said information recording/reproducing apparatus is represented by SATa,

an average jump access time of the pickup head of said information recording/reproducing apparatus is represented by JATa,

an average rotation wait time of the pickup head of said information recording/reproducing apparatus is represented by MWTa, and

N is less than or equal to 1/{[1+STR/(PTR−

STR)]*(SATa+JATa+MWTa)},

the information reproducing apparatus comprising;

a reproducer configured to reproduce a portion of the audio/video data based on at least one of the audio/video file information table, the position information, and the time information.