WO2006067761A1 - Attribution de chapitres dispersive pour enregistrements dvd - Google Patents

Attribution de chapitres dispersive pour enregistrements dvd Download PDF

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Publication number
WO2006067761A1
WO2006067761A1 PCT/IB2005/054366 IB2005054366W WO2006067761A1 WO 2006067761 A1 WO2006067761 A1 WO 2006067761A1 IB 2005054366 W IB2005054366 W IB 2005054366W WO 2006067761 A1 WO2006067761 A1 WO 2006067761A1
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WO
WIPO (PCT)
Prior art keywords
units
chapter
unit
chapters
automatic
Prior art date
Application number
PCT/IB2005/054366
Other languages
English (en)
Inventor
Leonardus Matheus Marie Veugen
Original Assignee
Koninklijke Philips Electronics, N.V.
U.S. Philips Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics, N.V., U.S. Philips Corporation filed Critical Koninklijke Philips Electronics, N.V.
Publication of WO2006067761A1 publication Critical patent/WO2006067761A1/fr

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Definitions

  • the present invention relates to copying to a digital video disc (DVD) a title that would exceed the DVD chapter budget and, in particular, to methods for intelligently allocating chapters to that title.
  • DVD digital video disc
  • audio and video information recorded on an optical disc such as a digital video disc (DVD) is logically organized into a hierarchy 100 of titles 104, chapters 108, cells 112 and video object units (VOBUs) 116.
  • Each VOBU 116 containing a NavPack 120 and groups of pictures (GOPs) 124 comprises video packets, audio packets and other private packets.
  • the hierarchy 100 supports user navigation throughout the recorded content information during playback, such as when jumping from one scene to another, searching for a specific scene, performing trick-play mode operations such as fast-forward and fast-reverse, and configuring a presentation based upon multi- angle viewing, parental control, etc.
  • a chapter 108 is also known, according to conventional DVD terminology, as a "part-of-title (PTT) unit.” Any given chapter 108 may correspond, for example, to a particular scene of a movie.
  • PTT part-of-title
  • HDD hard disk drive
  • ODD optical disk drive
  • PVR personal video recorder
  • DVD VR DVD Video Recording
  • a normal chapter 108 may contain one or more automatic chapters 128.
  • a normal chapter 108 to be archived to a DVD may, while still on the hard drive, has been prioritized by the user into one of two classes: a visible chapter 210, of higher priority, or a hidden chapter 220, of lower priority.
  • a normal chapter 108 of the respective class can be referred to as a "visible scene” and a "hidden scene” respectively.
  • the visible chapters 210 are played back and hidden chapters 220 are skipped.
  • the user can play back the full title of visible and hidden chapters 210, 220.
  • the designations "visible” and “hidden” are attributes of the chapter 210, 220 that are part of the metadata accompanying the media content on the HDD. All normal chapters 108 not designated as hidden 210 are visible 220. Optionally, the user may elect to skip over hidden chapters 220 during archiving. Also, copyright-protected parts are not archived.
  • the total number of chapters 108, 128 per disc TotalNrChsPerDisc is limited to a maximum of 254, and the total number of chapters 108, 128 per title TotalNrChsPerTitle is limited to no more than 99.
  • the budget of available chapters 108, 128, based on the DVD VR standard and/or user defined options takes into account the following.
  • the recording may also be allocated the remaining chapters 108, 128 in the budget.
  • Each recording requires a non-automatic chapter 108 at the beginning of that recording. If, after a new recording, there will be room for other recordings, then the system can reserve chapters 108, 128 for those other recordings.
  • the system can grant only a limited number of chapters 108, 128 based on the disc contents, and the size and location for that recording.
  • the present invention addresses the above-noted shortcomings in the prior art.
  • a digital video disc (DVD) recorder assigns automatic chapters in a title to avoid exceeding a chapter budget in copying the title to a DVD.
  • the title is divided into non-automatic chapters whose durations are determined, and the available automatic chapters are distributed among the non-automatic chapters according to the respective durations.
  • a DVD recorder eliminates non-automatic chapters in a title to avoid exceeding a chapter budget in copying the title to a DVD.
  • the title is divided into the non-automatic chapters, which are assigned respective priority classes.
  • At least one of the chapters is removed based upon at least one of the following: a plurality of durations of chapters of said title, a location where media content has been excluded that would otherwise have been contiguous with a chapter, and the priority class of a chapter.
  • FIG. 1 is a chart showing a hierarchy of a logical arrangement of elements of a DVD recording
  • FIG. 2 is a conceptual diagram classifying types of normal chapters by priority
  • FIG. 3 is a block diagram of a chapter-budget-responsive-archiving HDD-DVD combination box according to the present invention
  • FIG. 4 is a format diagram comparison between a hard disk recording and its DVD-archived counterpart recording, according to the present invention.
  • FIG. 5 is a flow chart of a process applied when there are too few normal chapters available for archiving a title
  • FIG. 6 is a flow chart of a process applied when there are too few automatic chapters available for archiving a title.
  • FIG. 7 is a flow chart refinement to FIG. 6 which includes or excludes hidden, normal chapters in the automatic chapter allocation.
  • FIG. 3 shows an example of a chapter-budget-responsive-archiving combination box 300 according to the present invention.
  • the combi box 300 has an optical disc drive (ODD) or a DVD drive 302, into which a disc can be inserted.
  • the combi box 300 further includes a DVD recorder 304 having a recording module 306, an HDD 308 and an HDD recorder 310.
  • Processes of the present invention may be implemented in the recording module 306, which includes a processor (not shown) and a computer-readable medium (not shown) such as random-access memory (RAM), read-only memory (ROM) and/or any of their respective variations. These elements of the recording module may be realized in any known and suitable combination of hardware, software and firmware.
  • the HDD recorder 310 records to the HDD 308.
  • the recording module 306 archives recorded content from the HDD 308 to the ODD 302, and does so in a manner responsive to the chapter budget, as will be described in more detail further below.
  • FIG. 4 provides, by way of illustrative and non-limitative example, a recording format 400 on HDD 308, and a format 402 of the recording as archived on DVD 302 in accordance with the present invention.
  • the format 400 spans four normal chapters 404, 408, 410, 412, which may correspond, for example, to four respective scenes in a movie.
  • the HDD recorder 310 can be operable to automatically detect scene changes and to lay down normal chapter markers 426, 438, 439, 440 in the recording to separate the chapters 404, 408, 410, 412.
  • three of the chapters 404, 408, 412 are visible and one of the chapters 410 is hidden.
  • the user may elect not to record hidden chapters, and therefore, in the present example, the hidden chapter 410 does not appear in the archived format 402. As mentioned above, copyrighted material is automatically prevented from being archived.
  • the durations of the chapters 404, 408, 412 are 416, 420, 424, respectively.
  • the recording module 306 encounters a marker for a first normal chapter 404 in the recording read from the HDD 308, and likewise inserts a marker 426 for the normal chapter 404 in the DVD recording. After a default duration 428 of 5 minutes into the first normal chapter 404, an automatic chapter 432 is inserted and the duration timer is reset. After another 5 minutes, a second automatic chapter 436 is placed and the duration timer is reset. Before the duration timer reaches 5 minutes, a marker 438 for a normal chapter 408 is encountered, thereby resetting the duration timer. Since the second chapter 408 has a duration 420 less than 5 minutes, no automatic chapter is inserted for the second chapter.
  • a marker 440 for the third normal chapter 412 is encountered, and the duration timer is reset. After 5 minutes, an automatic chapter 444 is inserted. During the above processing, if the chapter (or "PTT unit") budget is exceeded, further processing for this title is impacted adversely.
  • ⁇ characteristics include the duration 416 of each normal chapter 108, the priority 210, 220 of the chapter, and whether the chapter is seamless or non-seamless.
  • a seamless chapter is a normal chapter 108 for which the immediately preceding media content was recorded.
  • An example of a seamless chapter is chapter 408.
  • An example of a non-seamless chapter is chapter 412.
  • NrAvChs the number of chapters 108, 128 still remaining in the budget, i.e., still available to be allocated, subject to the TotalNrChsPerDisc and TotalNrChsPerTitle thresholds of 254 and 99, respectively;
  • NrReqNorChs the number of normal chapters 108 in the title 104 to be archived
  • NrAvAutoChs the number of available automatic chapters 128 for the title 104 to be archived, which is equal to NrAvChs - NrReqNorChs, or to zero if this is a negative number
  • NrReqAutoChs the number of required automatic chapters 128 in the title 104 to be archived, which depends upon the durations 416 and the default duration 428;
  • NrReqAutoChsVis that portion of NrReqAutoChs calculated for visible chapters 210;
  • NrReqAutoChsHid that portion of NrReqAutoChs calculated for the hidden chapters 220, if any, that exist in this title 104;
  • HidFlag set to 1 if any hidden scenes 220 exist in this title 104, and to 0 otherwise.
  • NrAvChs > NrReqNorChs + NrReqAutoChs
  • the recording module 306 straightforwardly allocates normal chapters 108 and automatic chapters 128 to the title 104 being archived, and then allocation is performed for the next title 104 to be archived, if any.
  • NrAvChs ⁇ NrReqNorChs + NrReqAutoChs
  • FIG. 5 is an exemplary iterative procedure to reduce the number of normal chapters 108 to be allocated to the present title 104, in accordance with the present invention.
  • a remainder N NrReqNorChs - NrAvChs represents the number of normal chapters 108 to be eliminated (step S504).
  • N is initially 1 or greater (step S508)
  • inquiry is made as to whether a seamless chapter in the title is located between two consecutive hidden chapters 220 (step S516). If more than one such pair of consecutive hidden chapters 220 exists, the pair that spans the shortest duration is chosen, with ties being arbitrarily decided (step S520). If no such pair exists, processing queries whether a non- seamless chapter in the title is located between two consecutive hidden chapters 220 (step S 524).
  • step S 520 If there are more than one such pair of consecutive hidden chapters 220, the pair that spans the shortest duration is chosen, with ties being arbitrarily decided (step S 520). If no such pair exists, a query is made as to whether a seamless chapter is located between two consecutive visible chapters 210 (step S528). If more than one such pair of consecutive visible chapters 210 exists, the pair that spans the shortest duration is chosen, with ties being arbitrarily decided (step S 520). If no such pair exists, a query is made as to whether a non-seamless chapter is located between two consecutive visible chapters (step S 532). If more than one such pair of consecutive visible chapters 210 exists, the pair that spans the shortest duration is chosen, with ties being arbitrarily decided (step S520).
  • step S536 a hidden chapter 220 of the shortest duration in the title, with ties being arbitrarily decided, is converted into a visible chapter 210 (step S536), and processing returns to step S528.
  • step S528 The above sequence of steps assures that step S520 will be executed.
  • the seamless or non-seamless chapter, as appropriate, between the pair chosen in step S520 is then removed (step S540), and the chapter removal count is updated (step S550). If the chapter removal count has now been reduced to zero (step S508), processing ends; otherwise, processing returns to step S516 to remove another normal chapter 108.
  • FIG. 6 provides one example of an iterative procedure executed to disperse the distribution of automatic chapters 128 equitably among all the normal chapters 108 in accordance with the present invention.
  • the variable A represents the number of automatic chapters 128 in NC;, i.e., normal chapter i 108, and is initialized to zero for all NC; (step S602).
  • D is the duration of the normal chapter i.
  • d is set equal to Dj/(1+Ai) (step S604).
  • an automatic chapter 128 is allocated to the normal chapter 108 for which d; is maximal (step S608).
  • a query is then made as to whether another automatic chapter 128 is available to be allocated (step S612).
  • Step S612 may be implemented to carry out the division for only the d; that would change, i.e., the d; for that NC; just having been allocated an automatic chapter 128 in step S608. Otherwise, if in step S612 no other automatic chapter 128 is available, the index i is set equal to one (step S616). If d ; is less than the default (step S620), it is set equal to the default (step S624). The index i is bumped up by one (step S628) and then tested to see if the last d ; has been processed (step S630).
  • step S620 If last d ; has been processed, control returns to step S620; otherwise, the allocation of automatic chapters 128 is complete.
  • the effect is to spread out the automatic chapters 128 evenly among all normal chapters 108.
  • the automatic chapters 128 allocated to normal chapter 108 are generally spread out evenly within the normal chapter, although, for example, automatic chapters smaller than the default size are shifted out to the default size thereby cutting short a last automatic chapter. For automatic chapters 128 greater than the default size, the spread can be implemented to be done evenly.
  • HidFlag 1
  • an initial procedure is preferably executed to take into account a priority that is accorded to visible chapters 210 in equitably distributing the available automatic chapters 128. As shown by example in FIG. 7, the relevant variables are calculated if this has not already been done (step S710). If NrAvAutoChs ⁇ NrReqAutoChsVis (step S720), the algorithm of FIG. 6 is then executed, but only for those NC; that are visible 210 (step S730).
  • NrAvAutoChs > NrReqAutoChsVis (step S720)
  • the visible chapters 210 are allocated the automatic chapters 128 they require in a straightforward manner, and the remaining NrAvAutoChs - NrReqAutoChsVis automatic chapters are allocated by executing the procedure in FIG. 6 only for the NC; that are hidden in? 220 (step S740).
  • automatic chapters 128 equitably distributed according to FIG. 6 are aligned to cell and VOBU borders.
  • a marker 445 to be placed in the DVD for the automatic chapter 444 is shifted in the direction indicated by the arrow 446 to the end of the cell 448.
  • the default chapter duration 428 is preferably set to an integral number of default cell durations to avoid the need for this shifting.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

Selon l'invention, un budget de chapitres pour un archivage à partir d'un disque dur (308) sur un DVD enregistrable ou réinscriptible (302) est respecté pour un titre (104) qui devrait normalement dépasser le budget. Si les chapitres normaux (128) fournis par le budget ne sont pas suffisants, le nombre nécessaire de chapitres normaux à archiver est éliminé en fonction de l'importance estimée par le comportement de l'utilisateur (S540). Si les chapitres fournis par le budget ne sont pas suffisants pour répondre aux besoins de chapitres automatiques indiqués, les chapitres automatiques comptés dans le budget sont répartis équitablement parmi l'ensemble des chapitres normaux en fonction de la durée des chapitres (S608).
PCT/IB2005/054366 2004-12-22 2005-12-21 Attribution de chapitres dispersive pour enregistrements dvd WO2006067761A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63822904P 2004-12-22 2004-12-22
US60/638,229 2004-12-22

Publications (1)

Publication Number Publication Date
WO2006067761A1 true WO2006067761A1 (fr) 2006-06-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051258A1 (fr) * 2007-10-16 2009-04-22 Sony Corporation Appareil, procédé et programme d'enregistrement choisissant entre un mode séparé et un mode continu d'enregistrement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001001682A1 (fr) * 1999-06-25 2001-01-04 Koninklijke Philips Electronics N.V. Numerotation d'objets et de cellules video
EP1316960A1 (fr) * 2001-11-28 2003-06-04 Deutsche Thomson-Brandt Gmbh Procédé d'enregistrement de données et enregistreur numérique
US20030152369A1 (en) * 2002-02-13 2003-08-14 Hitachi, Ltd. Information recording apparatus and information recording method
WO2004023803A1 (fr) * 2002-09-06 2004-03-18 Sony Corporation Dispositif et programme de traitement d'informations
EP1471739A2 (fr) * 2003-04-25 2004-10-27 Pioneer Corporation Appareil d'enregistrement et procédé de commande d'enregistrement.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001001682A1 (fr) * 1999-06-25 2001-01-04 Koninklijke Philips Electronics N.V. Numerotation d'objets et de cellules video
EP1316960A1 (fr) * 2001-11-28 2003-06-04 Deutsche Thomson-Brandt Gmbh Procédé d'enregistrement de données et enregistreur numérique
US20030152369A1 (en) * 2002-02-13 2003-08-14 Hitachi, Ltd. Information recording apparatus and information recording method
WO2004023803A1 (fr) * 2002-09-06 2004-03-18 Sony Corporation Dispositif et programme de traitement d'informations
EP1536642A1 (fr) * 2002-09-06 2005-06-01 Sony Corporation Dispositif et programme de traitement d'informations
EP1471739A2 (fr) * 2003-04-25 2004-10-27 Pioneer Corporation Appareil d'enregistrement et procédé de commande d'enregistrement.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051258A1 (fr) * 2007-10-16 2009-04-22 Sony Corporation Appareil, procédé et programme d'enregistrement choisissant entre un mode séparé et un mode continu d'enregistrement
US8326111B2 (en) 2007-10-16 2012-12-04 Sony Corporation Recording apparatus, recording method and program

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