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WO2007011351A1 - Systeme et dispositif de conversion de contenu dvd en contenu vod - Google Patents

Systeme et dispositif de conversion de contenu dvd en contenu vod Download PDF

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Publication number
WO2007011351A1
WO2007011351A1 PCT/US2005/025350 US2005025350W WO2007011351A1 WO 2007011351 A1 WO2007011351 A1 WO 2007011351A1 US 2005025350 W US2005025350 W US 2005025350W WO 2007011351 A1 WO2007011351 A1 WO 2007011351A1
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WO
WIPO (PCT)
Prior art keywords
video
demand
converter
disc
format
Prior art date
Application number
PCT/US2005/025350
Other languages
English (en)
Inventor
Michael Dillon Rich
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Priority to PCT/US2005/025350 priority Critical patent/WO2007011351A1/fr
Publication of WO2007011351A1 publication Critical patent/WO2007011351A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17336—Handling of requests in head-ends
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2355—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving reformatting operations of additional data, e.g. HTML pages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2543—Billing, e.g. for subscription services
    • H04N21/25435—Billing, e.g. for subscription services involving characteristics of content or additional data, e.g. video resolution or the amount of advertising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8545—Content authoring for generating interactive applications
    • 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 generally relates to video on demand systems and services and, more particularly, to a system and method which converts digital video disk content to video on demand content to provide greater flexibility in services.
  • DVD digital video disk
  • Movie studios increasingly include "extras” on DVD-Video discs, such as out-takes, documentaries, music videos, etc. These disc “extras” are accessed by the end-user via colorful and interactive menus which are authored onto the DVD-Video discs.
  • DVD-Video discs In order to produce DVD-Video discs with this level of interactivity, movie studios employ the creative services of individuals who use DVD-authoring tools to design the aesthetics and logic which designate the behavior of the disc when played back with a DVD-Video player, and controlled by an end-user.
  • This process involves, among other things, digitizing and compressing the audio-visual assets to be used (movie, extras, etc.), designing the logical hierarchy of the menuing system for the disc, designing the graphics, audio, and video to be used in the various menus, defining the "usage flow" of the disc - the model of how an end-user will interact with the content.
  • the DVD-authoring tool may abstract many of the details of the logical data hierarchy on a DVD, so that the creative individual can focus on higher-order dynamics and aesthetics.
  • the DVD-authoring tool has led to the escalation of complex and interesting menus on DVD-Video discs.
  • the assets which are used in producing that content have been slower to adopt the process of digitization. More specifically, the movie industry has not capitalized on the efficiencies to be gained by mastering assets in digital, and subsequently referencing the digital masters in all processing thereafter.
  • VOD Video On Demand
  • VOD is a concept that departs from the existing subscriber/broadcast based business construct.
  • an end-user watches movie content as it is broadcast at fixed times determined by the network operator.
  • the consumer's viewing habits must conform to the broadcast schedule, which equates to a limiting constraint on demand.
  • an end-user can view content at will, at any given time, and can pause and resume watching the content at his convenience. This removes the broadcast constraint on demand.
  • the present invention provides a mechanism and system to automate and generate interactive VOD content which adheres to technologies of the specific network. Authoring this type of content for VOD is currently inefficient because reuse of existing digital resources is non-existent.
  • a content owner such as a movie studio can re-use the work that went into creating the interactivity of a DVD-video disc, and issue a license to a network operator for that same content to be used in an interactive VOD services, such as via the internet or cable system.
  • the present invention describes systems and methods by which a DVD-video disc which has already been authored for interactivity for playback in a DVD-video player, can be used as a "master" in an automated procedure to produce content suitable for VOD services via the internet, cable networks, satellite or any other such medium.
  • a video disc file to video-on- demand converter includes a modified navigation manager which generates a hierarchical representation of logical data from a disc which permits user interaction.
  • the hierarchical representation includes a video on demand format usable by a video on demand receiver.
  • a content encoder which encodes content on the video disc to the video on demand format such that the video on demand format simulates interactivity and features of the optical video disk in the video on demand receiver.
  • a video on demand system includes a video on demand server which stores a plurality of titles for distribution to one or more clients.
  • the titles are stored in a video on demand format that provides a same interactivity of the titles as provided on a digital video disc (DVD) recording of the title.
  • a converter includes a modified navigation manager which generates a hierarchical representation of logical data from a disc which permits user interaction.
  • the hierarchical representation includes the video on demand format usable by a video on demand receiver.
  • a content encoder encodes content on the video disc to the video on demand format such that the video on demand format simulates interactivity and features of the optical video disk in the video on demand receiver.
  • FIG. 1 depicts a high level function block diagram of a conventional DVD player
  • FIG. 2 depicts a high level function block diagram of a device for converting DVD video to a video on demand format in accordance with an embodiment of the present invention
  • FIG. 3 depicts a high level a block diagram of a system for converting and delivering video on demand in accordance with an illustrative embodiment of the present invention.
  • the present invention provides an automated system and methods for using an optical disc or file (e.g., a DVD-video disc) as a master for translating the content of the disc into an interactive presentation suitable for video on demand (VOD) deployment over a network such as the internet, digital subscriber line (DSL) 1 cable networks or any other on demand digital service network.
  • a network such as the internet, digital subscriber line (DSL) 1 cable networks or any other on demand digital service network.
  • VOD video on demand
  • the present invention is much broader and may include any digital multimedia system, which is capable of content delivery over a network.
  • the present invention is applicable to any recording method including recording data received by telephone, set top boxes, computer, satellite links, etc.
  • the concepts of the present invention are described in terms of a cable or satellite network, the concepts of the present invention may be extended to other wireless and wired network types.
  • transforms are created to convert the logical data found on a DVD-video disc into logical data that can be parsed by VOD client devices so as to create the same hierarchical level of interactivity found on the DVD-video disc.
  • transforms can be created to convert audio/visual data to formats which are able to be consumed by VOD client devices, in such a way that the audio/video presentation is like that of the original DVD-video disc.
  • These transforms can be integrated with the existing abstract components found in a DVD-video player in such a way that the entire process of converting the DVD-video disc content into VOD content can be automated. This automation provides for the highest level of efficiency in converting existing and back-catalog titles for VOD networks.
  • the VOD-based content would reflect the nuances of DVD-video discs, which may include "extras" and associated menuing systems.
  • the content can be re-generated from master materials that may or may not have been used in creation of the original DVD-video disc.
  • a DVD-Video player is provided in accordance with embodiments of the present invention which preferably complies with the specifications published by the DVD Consortium in the "DVD Specification for Read-Only Disc", which is herein incorporated by reference in its entirety, for the purpose of reading the data stored on DVD-video discs and presenting the audio-visual information to an end-user.
  • a DVD-video player could comprise an all-software entity (such as on a PC) or an all-hardware entity or a combination of hardware and software. More specifically, it will be appreciated by those skilled in the art and informed by the teachings of the present invention that implementation of the described DVD components could be implemented in hardware and/or software, as is the case in current DVD-Video player implementations.
  • FIGs. herein may be implemented in various forms of hardware, software or combinations thereof. Preferably, these elements are implemented in a combination of hardware and software on one or more appropriately programmed general-purpose devices, which may include a processor, memory and input/output interfaces.
  • DVD-Video discs typically include three data types namely, audio-visual data, which is stored as compressed data per the DVD-video specification; DVD- Video logical data, which assigns a hierarchical format to the audio-visual data, and which designates a playback structure to the audio-visual data (per the DVD-video specification); and author-specific logical data on the disc that does not correspond to playback via the DVD-video specification. It is this logical data and the hierarchical format designated by the logical data that gives the DVD-video disc its interactive interface to the end-user.
  • An example of this type of logical data would be an executable software application targeted for a personal computer (PC), for example.
  • PC personal computer
  • Such an executable software application is typically located outside the directory structure of the DVD-video itself, and no DVD-Video player compliant to the DVD- video specification would be expected to parse and execute such data.
  • a PC would be able to access the file structure on such a DVD-video disc, and would be able to parse and execute this logical data (outside the scope of the DVD-Video specification).
  • the audio-visual data on a DVD-video disc includes video, which is typically compressed using, for example, an MPEG standard (Main Level/Main Profile, e.g., MPEG-2) or the like. Audio is also included, which can be compressed in various formats as stipulated in the DVD-video specification (e.g., MPEG-1 level 2, PCM, AC-3, DTS). Additionally included sub-picture data may include run-length encoded bitmapped graphics elements which can be overlayed and mixed with the resulting decoded video.
  • MPEG standard Main Level/Main Profile
  • Audio is also included, which can be compressed in various formats as stipulated in the DVD-video specification (e.g., MPEG-1 level 2, PCM, AC-3, DTS).
  • sub-picture data may include run-length encoded bitmapped graphics elements which can be overlayed and mixed with the resulting decoded video.
  • the audio-visual data is compressed with the appropriate compressor, packetized into the payloads of disc sectors, and these packetized sectors are multiplexed such that each of the elements: audio, video, and subpicture could be recovered and decoded for synchronized rendering to the end user.
  • the sectors which packetize the audio-visual information on the disc are grouped together in terms of which file they are a member, and are arranged physically on the disc such that all sectors within the same file are in sequentially ascending order, as stipulated in the physical specifications for the DVD-video disc format. These files are known as "VOB files" within the DVD-Video specification, a shortened form of Video OBject file.
  • the DVD-video logical data on a DVD-video disc includes tables of information which very precisely designate the logical/hierarchical form and structure of the audio-visual data on the disc.
  • the hierarchical framework by which the audiovisual content can be referred can be represented as follows: [0024] Video Title Set - a group of video titles:
  • Video Title - a logically coherent grouping of audio-video content.
  • a title would represent something such as an entire movie, or an interactive menu sequence:
  • Program - a logical sub-set of a complete video title; in practice, a program might correspond to a specific scene within an entire movie:
  • Cell - a cell is a sub-set of a program; the Cell is the first logical data structure in the hierarchy, which maps physical sector addresses of audio-visual data to actual logical constructs within the hierarchy: and
  • VOBU - a Video OBject Unit is the most atomic logical grouping of the audio-visual data; a VOBU includes a coherent series of sectors whose video payload corresponds to, e.g., a Group Of Pictures as designated in the MPEG-2 specification.
  • the first sector in every series of sectors that comprises a VOBU is designated as a Navigation Pack, and includes logical data useful to playback of the audio-visual content.
  • some logical constructs may include the following:
  • System space, menu space, Video ManGer (VMG) space, and Video Title Space (VTS) can be designated as operating in one of these four "spaces" or modes.
  • the DVD-video specification delineates each of these modes of operation, and designates rules on how user activity is to be handled in each of these playback modes.
  • One purpose for designating these playback modes is to account for the modality of user behavior.
  • buttons - the logical notion of a button is a marriage of bitmap data (sub- picture), navigation commands, and a navigational relationship.
  • a button is a logical entity which designates a segment of sub-picture data which is to be decoded and rendered over decoded video at a specific location on the screen.
  • buttons There can exist at a given time multiple buttons which are rendered onto the end-user display, and there exists in the logical description of the button, a way to designate to a user which button is currently focused.
  • the logical description of a set of buttons describes how focus can shift from one button to the next as the user presses various keys (e.g., up, down, left, right) on an input device.
  • the logical description of a button designates which subpicture should be used to convey to the user that the button is currently focused.
  • the logical description of a button designates which navigation command should be parsed and executed when the user selects the button.
  • FIG. 1 depicts a high level function block diagram of a conventional DVD player. Details of the individual block components making up the system architecture are known to skilled artisans, and will only be described in details sufficient for an understanding of the present invention. Utilizing the above described logical hierarchy and constructs, an author can create a DVD-video disc which displays audio-visual data in an interactive manner with menus and extra materials to be perused as determined by the end user in accordance with the present invention.
  • FIG. 1 the primary functional components of a DVD-video player (hardware and/or software) are depicted in FIG. 1. These components of a DVD- video player can be utilized in addition to new components in creating an automated system for translating DVD-video discs (with full menuing systems and interactivity) into content that is of a format suitable for VOD deployment across a network such as the internet, a cable network, a DSL video network, etc.
  • a DVD optical drive mechanism or controller 101 for reading data from the disc.
  • Disc controller 101 controls the optical drive mechanism 101 such that sector-based data can be read from the disc.
  • the disc controller 101 is able to receive commands 120 which instruct the controller 101 to retrieve sector- based data from the disc.
  • the data stored in the disc falls into the category of either Audio/Visual Data 103a (Disc-Based) or Logical Data 103b (Disc-Based).
  • a navigation manager 104 in the DVD-video player 101 is responsible for parsing the logical disc structure, managing user-inputs, and orchestrating the interactive playback of the disc.
  • the navigation manager 104 sends commands to the disc controller 101 to receive the specific sectors which include the logical data 103b.
  • the logical data 103b is communicated to the navigation manager 104 as depicted by Logical Disc Data 122.
  • the logical disc data 122 designates the locations of specific audio/visual content, and designates the playback behavior of the disc that results in interactive presentation to the user.
  • the navigation manager 104 has retrieved logical data from the disc controller 101 , this information is parsed to determine the interactive behavior of the disc (such as menus). End-user inputs are processed by the navigation manager 104, the resulting playback behavior as dictated by the logical data 122 is determined, and ultimately a range of sectors that correspond to a section of a VOB file are resolved to be retrieved and ultimately rendered to the end-user. After resolving which sectors are to be retrieved, the navigation manager 104 issues commands 120 to the disc controller 101 , and sectors emerge as audio/visual data 124.
  • the series of sectors of audio/visual data include audio, video, and subpicture data that are multiplexed per the DVD-video specification.
  • This series of sectors 124 are delivered to the a VOB demultiplexer 106, which extracts video data 126, subpicture data 128 and audio data 130 as serial sectors of those data types, and forwards these respective series of sectors to the appropriate decoder blocks.
  • a video decoder 108 parses and decompresses the sectorized video data per the MPEG-2 and DVD-video specifications to create decoded video 132.
  • a subpicture decoder 110 parses and decompresses the run- length encoded bitmap information of the sectorized subpicture data per the DVD- video specifications to form decoded subpicture data 134.
  • An audio decoder 112 is parses and decompresses the sectorized audio data per the DVD-video specifications to form decoded audio 136.
  • Decoded video 132 and decoded subpicture 132 are communicated to a video/graphics compositor 114 which is able to overlay the graphics of the subpicture onto the decoded video plane.
  • a mixed video/subpicture 140 and decoded audio 136 are sent to their respective renderers, e.g., a video renderer 116 and an audio renderer 118 to be rendered in a synchronized fashion for consumption by the end user.
  • a VOD client device may include an Internet web-browser, a set- top DSL or cable box. Neither Internet web-browsers, nor DSL or cable set-top boxes are programmed to properly interpret the logical data of a DVD disc. However, Internet web-browsers or DSL or cable set-top boxes do have HTML parsers/renderers which can be used to visually present menuing systems to the end-user.
  • Internet web-browsers or DSL set-top boxes might be network- constrained such that it is not feasible to transmit MPEG-2 video or high-quality audio, such as is stored on a DVD-Video disc.
  • Internet web-browsers and often DSL set-top boxes are equipped to process audio/video formats with a much higher compression than MPEG-2, because of these network constraints.
  • FIG. 2 depicts a high level function block diagram of a device for converting DVD video to a video on demand format in accordance with an embodiment of the present invention.
  • Device 200 of the present invention may include a modified DVD player, a separate device connectable to a DVD player, or a separate device (e.g., module 260) for converting DVD-video content into VOD content.
  • a front-end of a DVD-video to VOD converter includes a DVD optical drive mechanism 101 for reading sector-based data from the disc.
  • the disc controller 101 is able to receive commands 220 which instruct the controller 101 to retrieve sector- based data from the disc.
  • the data stored in the disc falls into the category of either audio/visual data (disc-based) 103a or logical data (disc-based) 103b.
  • a modified navigation manager 204 in the DVD-Video to VOD converter is responsible for parsing the logical disc structure, orchestrating navigation of the disc data structures, and converting the logical organization of the disc into a logical format suitable for VOD systems.
  • the modified navigation manager 204 sends commands 220 to the disc controller 101 to receive the specific sectors which include the logical data 222.
  • the logical disc data 222 is communicated to the navigation manager 204.
  • the logical disc data 222 designates the locations of specific audio/visual content, and designates the playback behavior of the disc that results in an interactive presentation to the user.
  • the modified navigation manager 204 shares much of the same core logic as the navigation manager 104 in a DVD-Video player, the core logic of manager 204 is able to parse the hierarchy of logical disc data and ultimately resolve playback to a specific sequence of audio/visual content based upon end-user inputs.
  • the modified navigation manager 204 extends the operational logic to permit addition functionality.
  • the extension of the operational logic of the modified navigation manager serves to simulate all possible end-user inputs, to generate an all-inclusive interactive "navigation path" through the logical data on the disc.
  • a conventional navigation manager found in a DVD-Video player will receive an input from an end-user, parse the logical data structures of the DVD-Video disc, and will resolve that input action down to playing a specific sequence of audio/visual content - be it a menu, a movie, or an "extras" segment.
  • the modified navigation manager 204 in accordance with the invention is pro-active in its parsing of the logical data on the DVD-Video disc, by sequentially resolving the segment of audio/visual content that would result from each possible user input. It is necessary for the modified navigation manager to operate in this way, because there is often no semantic information present in the implementations of DVD-video discs which indicate whether specific audio/visual content is a movie, a menu, or an "extras" segment.
  • the modified navigation manager can construct its own data-structure as represented by hierarchical representation 206, perhaps a tree- node structure, which would represent the logical hierarchy of the disc's interactive materials as presented to the end-user (for example, a menuing system).
  • the modified navigation manager 204 can construct new logical data structures which are appropriate for consumption by a VOD client device.
  • the example logical data format that is appropriate for Internet VOD consumption includes HTML 212, which is generated by a HTML writer 210.
  • Other languages, formats or tools may be employed, e.g., JAVATM, or JAVASCRIPTTM may be employed.
  • a network operator may employ a middleware that uses a proprietary language for interactivity, in which case a specific transform may be written.
  • the resulting HTML files 212 can be stored as VOD data 256.
  • VOD device 258 When viewed by a VOD-capable browser (258) device data 256 would result in an interactive experience that is nearly identical to that which the DVD-Video disc offered.
  • VOD device 258 may include a modem, set top box, satellite box, computer with a browser or other software or any other device capable of VOD and rendering VOD format.
  • the modified navigation manager 204 resolves all unique audio/visual sequences which would be presented to the end-user given all possible end-user inputs. As the modified navigation manager resolves specific audio/visual sequences corresponding to possible end-user inputs, it delineates a range of sectors that correspond to a section of a VOB file that would ultimately be rendered to the end-user in a DVD-video application. After resolving which sectors are to be retrieved, the modified navigation manager 204 issues commands 220 to the disc controller 101 , and sectors emerge as audio/visual data 124.
  • the series of sectors of audio/visual data 124 include audio, video, and subpicture data that is multiplexed per the DVD-video specification. This series of sectors are delivered to the VOB demultiplexer 106, which extracts video data 126, subpicture data 128, and audio data 130 as serial sectors of those data types, and forwards these respective series of sectors to the appropriate decoder blocks.
  • Video decoder 108 parses and decompresses the sectorized video data per the MPEG-2 and DVD-video specifications.
  • Subpicture decoder 110 parses and decompresses the run-length encoded bitmap information of the sectorized subpicture data per the DVD-video specifications.
  • Audio decoder 112 parses and decompresses the sectorized audio data per the DVD-Video specifications.
  • Decoded video 230 is communicated to a video encoder 240 which produces VOD video 250, which is a video format that would be acceptable for a VOD-capable browsing device.
  • VOD video 250 which is a video format that would be acceptable for a VOD-capable browsing device.
  • some sequences of decoded video can be fed into a graphics encoder 242, which would encode the video as a single still- image. This method would be most appropriate when the video on the DVD-video disc is a still-image as is often found on a menu.
  • decoded subpicture 232 is communicated to the graphics encoder 242 which produces VOD graphics 252, which are graphics in a format suitable for a VOD-capable browsing device 258.
  • VOD Audio 254 which is appropriate for consumption by a VOD-capable browsing device 258.
  • All of the resultant VOD elements: Logical (HTML), Video, Audio, Graphics are combined in VOD data 256, a set of files which are suitable to be placed on a VOD server for consumption by VOD-capable browsing devices.
  • FIG. 3 depicts a high level a block diagram of a system for converting and delivering video on demand in accordance with an illustrative embodiment of the present invention.
  • System 300 includes a video on demand server 302 which stores a plurality of video titles or other content for deliver or distribution to one or more clients 304.
  • Clients 304 each include their own VOD receiver 306, which may include a computer, set top box or DSL modem.
  • Receivers 306 may include a VOD browser 310 for navigating through features in the video or content.
  • a converter 200 or 260 is provided to convert DVD's or other media content to VOD format.
  • Converter 200 may be included in server 302 or may be provided as a separate device.
  • a DVD is loaded in the converter 200 and the content including logic data, video, audio and graphics are converted to the VOD format.
  • the converted VOD data may be stored as a master file 312 in memory of server 302 or stored on a media storage device 314, such as a disc or another hard drive.
  • the master file 312 may include an optical disc or a bit-for-bit image of the optical disc residing on a hard drive. In that case, the access to the various data structures and assets would not come through the optical disc path (as outlined in a physical DVD player).
  • a “virtual" DVD drive which "mounts” the disc image on the hard- drive and emulates optical disc accesses for the balance of the system may be employed.
  • An example may include a DVD authoring house that originally created the disk that includes a master image on a hard drive.
  • Such a system could implement the automated system of the present invention to convert that hard-drive image.
  • the converting process may be a one-time event or may be performed each time an order is placed.
  • an entire library of titles may be converted to VOD and stored for distribution.
  • the titles are stored as DVDs or in DVD format and converted when demanded by a client.
  • a user requests a video through an on demand service on a service network 320.
  • the video is provided on-demand with all of the interactive capabilities as though the user were viewing the DVD disc directly on their DVD player.
  • the user may be given a choice between a standard movie (no DVD features or extras) or a DVD version in VOD format having all the features and extras. The latter may be charged at a different rate than the former.

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  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Human Computer Interaction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

La présente invention concerne un dispositif de conversion de fichier de vidéodisque en contenu VOD (vidéo sur demande) comprenant un gestionnaire de navigation modifiée (204) qui génère une représentation hiérarchique (206) de données logiques d'un disque permettant l'interaction utilisateur. La représentation hiérarchique comporte un format VOD utilisable par un récepteur de vidéo sur demande. Le dispositif comprend également un codeur de contenu (240) qui code un contenu du vidéodisque au format VOD de sorte que ce format simule l'interactivité et les caractéristiques du vidéodisque optique dans le récepteur de vidéo sur demande.
PCT/US2005/025350 2005-07-18 2005-07-18 Systeme et dispositif de conversion de contenu dvd en contenu vod WO2007011351A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2005/025350 WO2007011351A1 (fr) 2005-07-18 2005-07-18 Systeme et dispositif de conversion de contenu dvd en contenu vod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/025350 WO2007011351A1 (fr) 2005-07-18 2005-07-18 Systeme et dispositif de conversion de contenu dvd en contenu vod

Publications (1)

Publication Number Publication Date
WO2007011351A1 true WO2007011351A1 (fr) 2007-01-25

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Application Number Title Priority Date Filing Date
PCT/US2005/025350 WO2007011351A1 (fr) 2005-07-18 2005-07-18 Systeme et dispositif de conversion de contenu dvd en contenu vod

Country Status (1)

Country Link
WO (1) WO2007011351A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020114331A1 (en) * 2000-12-13 2002-08-22 Cheung Kwok Wai Method and system for delivering media selections through a network
US20040136698A1 (en) * 2002-07-10 2004-07-15 Mock Wayne E. DVD conversion for on demand
US20040210896A1 (en) * 2003-04-21 2004-10-21 Chou Charles C.L. Distributed interactive media authoring and recording

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020114331A1 (en) * 2000-12-13 2002-08-22 Cheung Kwok Wai Method and system for delivering media selections through a network
US20040136698A1 (en) * 2002-07-10 2004-07-15 Mock Wayne E. DVD conversion for on demand
US20040210896A1 (en) * 2003-04-21 2004-10-21 Chou Charles C.L. Distributed interactive media authoring and recording

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