EP1668883A4 - Dispositif portatif de stockage et de reproduction video - Google Patents

Dispositif portatif de stockage et de reproduction video

Info

Publication number
EP1668883A4
EP1668883A4 EP04784940A EP04784940A EP1668883A4 EP 1668883 A4 EP1668883 A4 EP 1668883A4 EP 04784940 A EP04784940 A EP 04784940A EP 04784940 A EP04784940 A EP 04784940A EP 1668883 A4 EP1668883 A4 EP 1668883A4
Authority
EP
European Patent Office
Prior art keywords
video
files
playback device
storage
key
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP04784940A
Other languages
German (de)
English (en)
Other versions
EP1668883A2 (fr
Inventor
Priscilla M Lu
Timothy R White
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VIDEONLINE Inc
Original Assignee
VIDEONLINE Inc
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 VIDEONLINE Inc filed Critical VIDEONLINE Inc
Publication of EP1668883A2 publication Critical patent/EP1668883A2/fr
Publication of EP1668883A4 publication Critical patent/EP1668883A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04N21/2541—Rights Management
    • 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
    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866—Management of end-user data
    • H04N21/25875—Management of end-user data involving end-user authentication
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42661—Internal components of the client ; Characteristics thereof for reading from or writing on a magnetic storage medium, e.g. hard disk drive
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4335—Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/781—Television signal recording using magnetic recording on disks or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Definitions

  • the invention relates to the general field of a portable video storage and playback device.
  • Conventional video storage devices include video tape and digital video disks.
  • the invention relates to the general field of a portable video storage and playback device.
  • the invention can download, store, and playback video files.
  • the files can be played-back in a number of different formats.
  • the invention includes a disk drive for storing a plurality of video files.
  • a processor is coupled to the disk drive and configured to manage the files stored on the disk, which includes the ability to store, display and retrieve the video files.
  • the invention includes a number of interfaces thereon, for example, PAL/NTSC, S-Video and USB, which allows the video to be downloaded and played-back in any of these formats or protocols.
  • the invention also includes a video encoder/decoder, which in one aspect is for MPEG.
  • the invention has the capability to store a number of video files, where files can be associated with permission attributes.
  • the invention has a security authentication key that serves to protect copyrighted works and prevent unauthorized dissemination of copyrighted works.
  • Advantages of the invention include the ability to store a number of video files in a compact portable device that can be transported and viewed at convenient locations.
  • Figure 1 is an architectural view of a video storage and playback device according to an embodiment of the invention.
  • Figures 2A-B are exemplary embodiments of the invention.
  • Figures 3A-C depict an online video server and a user computer according to an embodiment of the invention
  • Figure 4 depicts a kiosk according to an embodiment of the invention
  • Figures 5A-B are flowcharts according to an embodiment of the invention.
  • Figures 6A-C depict docking stations according to embodiments of the invention.
  • the invention relates to the general field of a portable video storage and playback device.
  • the invention can download, store, and playback video files.
  • the files can be played-back in a number of different formats.
  • the invention includes a disk drive 112 for storing a plurality of video files.
  • a processor 110 is coupled to the disk drive 112 and configured to manage the files stored on the disk, which includes the ability to store, display and retrieve the video files.
  • the invention includes a number of interfaces thereon, for example, PAL/NTSC 116, S- Video 118 (e.g. digital video) and USB 120-122 (preferably 2.0), which allows the video to be downloaded and played-back in any of these formats or protocols.
  • the invention and includes a video encoder/decoder 114, which in one preferable aspect is an MPEG encoder/decoder.
  • a wireless interface 130 for example using an IEEE 802.11 protocol, is used to interface with other wireless local area network components and can be used to interface with a kiosk as described below.
  • a remote control interface 132 is provided to remote control functionality.
  • an optional dock interface 134 is used to couple to a docking station as described below.
  • the invention includes standard video outputs like PAL/NTSC and S-Video, the invention can be plugged directly into a television or monitor.
  • the invention also includes USB ports that can communicate with a computer ⁇ br display on the computer monitor.
  • the USB port is preferably USB 2.0, which is sufficiently fast to support video.
  • Other interfaces are anticipated that can plug into legacy, existing and other future interfaces.
  • One example is Fire- Wire, which can also be included in the invention.
  • the invention has the capability to store a number of video files, where files can be associated with permission attributes, hi one embodiment, the invention has a security authentication key that serves to protect copyrighted works and prevent unauthorized dissemination of copyrighted works. This security mechanism can also protect user privacy since video file attributes can be set to playback videos only when the key is coupled to the device.
  • the security authentication is a hardware key that is coupled to the device to allow the playback of video files, which performs a function of digital rights management (DRM).
  • DRM digital rights management
  • This can be, for example, a USB key device 124 with a particular key (e.g. a MAC address), or a SLM card with an encryption key, as described below.
  • the video player will only play the video back when the key is coupled to and recognized by the device.
  • a USB key any key can be used with the invention, including one that is embedded inside the device.
  • the video is encoded with the key information so that only a device with the key can decode the video information.
  • One interesting aspect of using a USB memory device as the key is that the USB memory device can contain defects that would ordinarily make it of little value for storing data, and the USB key can be used to store video files. Since a video file does not require perfection, an imperfect USB device makes a satisfactory video data storage device.
  • the encryption device is useful because the video header can be generated at download time based at least in part of the key 124. Then the video data can only be decoded and viewed with the key. This provides digital rights management features that are hardware specific, which prevents unauthorized copying and playback of that content.
  • the header also includes a device identifier that is associated with the particular device 100. h the case of the device 100 including a particular identifying attribute, it qualifies as an authorized device for use on the network to communicate with the video server and download video content.
  • the device 100 can modify the video header to satisfy any restrictions placed on the subscription. For example, if the user is entitled to view a particular video file three times, the header can be modified each time the video is viewed. Once the video is viewed the maximum number of time, then the video would not be permitted to be viewed any longer without a modification to the subscription attributes. [00253 Iff addition to the interfaces described above, the invention includes a flash memory interface that can be used to upload digital photographs, video clips or other files stored on the flash memory. Likewise, the invention can also store information on the flash memory for use in other devices.
  • Figures 2A-B are exemplary embodiments of the invention that include an integrated video display.
  • Figure 2A depicts a video display 220 built into the device and control buttons 230 disposed below the display.
  • Figure 2B depicts a video display 270 built to swing upward and expose the control buttons 280.
  • Power can be supplied by an internal or external battery source, or from a standard electrical power outlet.
  • the invention may be connected to a television, computer monitor or other display device.
  • the device can be coupled to a video player or DVD player to record video onto the disk 112.
  • video can be downloaded onto the disk 112 using a computer connected to the
  • the device 100 can be used in conjunction with an internet server or kiosk.
  • the device communicates over the internet to communicate identification data and download content.
  • the identification data includes, for example, subscriber identity, subscription type and other such information.
  • the kiosk may have content stored on a local storage medium that can be quickly delivered to the device.
  • the device may be in close proximity to or even connected to the kiosk to enable high bandwidth communication between the kiosk and the device 100.
  • FIGS 3A-C depict an online video server and user computer according to an embodiment of the invention, h this embodiment, a user opens a network browser (e.g. an
  • Figure 3 A depicts an exemplary screen 300 showing a technique for downloading video files.
  • Figure 3B depicts an exemplary network server 350 that stores video files and makes them available for download over the network (e.g. the Internet).
  • Figure 3C depicts a user computer 350, which the device 100 could connect to in order to download the video files from the video server 330.
  • a key is coupled to the device while downloading to authenticate the user and create a code that will only allow playback when the key is coupled to the device.
  • a user would either purchase each video separately, or may subscribe to license a specific number of videos at any one time. For example, i the user subscribes to 5 videos, the server would store the key information related to the user and the software would ensure that the key associated with that user only had that limited number of videos associated with it and would not allow the download of additional videos until the device confirmed that videos were deleted from the device. In this manner, the user is limited to their subscription.
  • FIG. 4 depicts a kiosk 410 according to an embodiment of the invention, which is connected to a video server 330 over the Internet.
  • the kiosk stores and display locally stored video content on display 412 for selection by users and fast download to video devices.
  • the kiosk 410 periodically downloads video content from the server over an Internet interface 414 to make content available to users via high-speed local interfaces 416 and 418, which may be a physical socket or an antenna for wireless LAN communication. Since a conventional Internet connection is typically less than IMbit/s, it may take a while for video to download. However, the local interface 416 can easily be in the range of 10-lOOMbit/s, which enables much faster local downloads.
  • the local interface 416 and socket 417 can be an Ethernet, USB, FireWire or other type of interface.
  • the kiosk is helpful for a number of reasons including that the users can interact with the kiosk to preview videos while the device is downloading and/or modify their subscription attributes.
  • the user can decide on the subscription attributes in general, or can decide on subscription attributes for each particular video file. These attributes include: number of plays, rental time, rental quota limit, purchase, etc.
  • the kiosk stores the videos as headerless files.
  • the video data is not playable without a valid header file so there is little chance that a person could break into a kiosk and distribute illegal copies of video content.
  • the headers are generated at download time and based in part on the device identity and the user's security key, which is also referred to as a digital rights management (DRM) key.
  • DRM digital rights management
  • the kiosk serves as a control layer, and not only as a distribution layer in the process.
  • the kiosk includes administrative and billing center that communicates with the central server 330 to perform transactions including updating subscriptions and downloading video content.
  • Figures 5A-B are flowcharts according to an embodiment of the invention.
  • FIG. 5A depicts a technique for downloading video content and Figure 5B depicts a technique for playing video content.
  • step 510 begins the download process.
  • Step 512 authenticates the user by way of password, identification key or other such technique.
  • the user searches " the available titles and identifies one for download.
  • the user requests the download.
  • the invention checks the download limit for the subscriber. If the subscriber is within the limit then the download is approved in step 520.
  • the video content is encoded with the subscriber key information prior to download. If the download is not approved in step 520, the subscriber has an option to pay for the new download in step 524.
  • the subscriber may be able to delete a downloaded file and then be approved to download the new file. If the subscriber chooses not to pay or take other such action, the then process ends in step 526.
  • step 560 begins the play process.
  • Step 562 checks the user's key to ensure that it authenticates the video. If the key is correct, the step 564 decodes and plays the video. If the key is not correct, then step 566 refuses to decode and play the video.
  • the video is encoded with information related to the key, and the key must be coupled to the device in order to enable playback.
  • the billing for the video downloads and/or subscription can be managed in a unified manner along with other services.
  • an Internet Service Provider ISP
  • the ISP employs the invention to track the subscribers and to monitor their downloads and subscriptions as appropriate.
  • FIG. 6 A depicts a docking station 520 according to an embodiment of the invention.
  • the docking station includes a cradle 522, a device interface 524 and a video output
  • the docking station provides a cradle for the device 100 to couple with an external display such as a television or computer monitor, for example.
  • the docking station cradle also provides power to the device 100 to either power the device or recharge batteries in the device.
  • Figure 6B also shows an interface panel for the docking station including a power input 528.
  • the docking station includes an internet interface 535. This additional interface permits the device 100 to connect with a video server and download video data to the device 100.
  • the docking station includes a video input interface 547. This interface permits the device 100 to record video directly from a video input and to provide a record mode as described below.
  • the docking station can be configured to operation in three exemplary modes with additional modes anticipated. [0W'] I . S'tahdarcfP ' ray Mode
  • Standard play mode involves playing back video data that is stored on the video storage and playback device 100.
  • the controls for playing the content are on the device 100 or commanded by a remote control that communicates with the device 100 or docking station.
  • the device can download video content during non-peak hours such as at night.
  • the video content will be available for the user to remove the device from the docking station and either view the content on the device 100 or with the docking station.
  • Another mode is a record mode that stores the video while a user is watching the program so that the user can take a break or review certain portions of the video while continuing to record the incoming video stream.
  • Digital Rights Management is a system for protecting the copyrights of data circulated via the Internet or other digital media by enabling secure distribution and/or disabling illegal distribution of the data.
  • a DRM system protects intellectual property by either encrypting the data so that it can only be accessed by authorized users or marking the content with a digital watermark or similar method so that the content can not be freely distributed.
  • a Subscriber Information Module is, for example, a small, stamp-size
  • SLM card as used in a cellular GSM-type phone.
  • the SLM card contains a microchip that stores data to identify the caller to the network service provider.
  • the SLM card contains a microchip that stores data to identify the caller to the network service provider.
  • SLM is used to identify the network user to the inventive network and, optionally, to lock and encrypt content using DRM.
  • a SLM Stick is a SLM that is pluggable into a PC or other device through a standard interface such as USB, serial port, or other interface.
  • a Removable Memory Device which is sometimes called a keychain drive or a USB drive, flash drive, or disk-on-key is a plug-and-play portable storage device that uses flash memory or miniature disk drive and is lightweight enough to attach to a key chain or carry in a pocket.
  • An RMD can be used in place of a floppy disk, Zip drive disk, or CD.
  • a keychain drive does not require rebooting after it's attached, does not require batteries or an external power supply, and is platform independent.
  • SeveraTK eychain drive manufacturers offer additional features such as password protection, and downloadable drivers that allow the keychain drive to be compatible with older systems that do not have USB ports.
  • DRM protects content by encrypting it and including a header of the file that describes how the content is to be used.
  • methods of use may include: (a) a restriction on the number of times the content can be viewed or played, (b) a restriction on the amount of time that the content is valid, for example, after a time the content is no longer viewable or playable, or (c) unrestricted play by the user, for example, a content purchase or perpetual license method.
  • DRM protected content is locked using a key.
  • the key is often related to either a
  • the DRM usually requires a connection to the Internet so that the Username and password can be verified and the methods of use can be verified. This is considered an Online mode of DRM protection.
  • the content viewer application needs to be aware of where to go on the Internet for verification.
  • DRM can be used in an Offline or Embedded Device mode, h this mode, the device provides its own method of verifying the user and opening the content, and does not need to be connected to the Internet. In this mode, the content is locked to the device and can only be used on the device.
  • This information is used by the viewer application to verify the DRM methods for the file prior to opening it.
  • the SLM stick as two purposes in the inventive network. It can be used to identify the user of the network for billing purposes, and, optionally, it can be used to identify the device to which the DRM protected content is tied.
  • the A3 algorithm is used by a GSM network to authenticate a GSM mobile phone.
  • the GSM A3 algorithm is a one-way function implemented in the subscriber identity module (SLM).
  • SLM subscriber identity module
  • the inventive network contains an authentication center
  • the SLM Device LD is used to lock the content and information about the DRM protected files is stored on the SLM.
  • the content can be moved between devices, even in the Offline mode, hi this example, one requirement is that all devices use the special viewing application, which may be downloaded from the Internet
  • Flash disk in a Key then the user has the above capabilities of the SLM stick and also a removable device to which the DRM protected content can be downloaded.
  • the user inserts the combined SLM and removable memory device into, for example, a standard USB 2 port.
  • the network verifies the user's identity using the SLM, locks the content to the SLM Device LD and downloads the locked content to the memory of the Key POD.
  • the user now has a convenient way to transport DRM protected content and play it on multiple devices in the Offline mode.
  • the inventive network can download DRM protected content to the Memory device.
  • the DRM header information is missing from the content file.
  • the inventive network user decides to play the content, he must connect to the Internet and contact the video server in order to obtain the header information. The user does not need to decide until this time how he wants to use the content. Based on how the user wants to use the content, the inventive network will properly bill the user and construct the DRM header. For example, the user may way to view the content 3 times, or may decide that the content is to be available for 5 days. Alternately, the user may choose another permissible DRM method. Once the header information is downloaded to the user the content can be viewed in the
  • Offline mode The ability to defer deciding how to purchase and/or use the content is unique in the Offline mode.
  • the file can be copied and sent to others. However, the other users are not authorized to view the content until they contact the video server and pay for the right to view the content in an agreed upon manner.

Abstract

Un dispositif de stockage et de reproduction vidéo permet de télécharger, de stocker et de reproduire des fichiers vidéo. Dans un mode de réalisation d'exemple, les fichiers peuvent être reproduits dans plusieurs formats différents. Dans un mode de réalisation, l'invention comprend un lecteur de disque destiné à stocker une pluralité de fichiers vidéo. Un processeur est couplé au lecteur de disque et est configuré pour gérer les fichiers stockés sur le disque; il comprend la capacité de stocker, d'afficher, et de récupérer des fichiers vidéo. L'invention comprend un certain nombre d'interfaces, par exemple, PAL/NTSC, S-Video et USB, qui permettent de télécharger la vidéo destinée à être téléchargée et reproduite dans n'importe lequel de ces formats de protocole. L'invention comprend un codeur / décodeur vidéo qui, dans l'un des aspects, est destiné au MPEG. Les avantages de l'invention comprennent la possibilité de stocker un certain nombre de fichiers vidéo sur un dispositif portatif compact qui peut être transporté et visualisé à des endroits appropriés.
EP04784940A 2003-09-24 2004-09-24 Dispositif portatif de stockage et de reproduction video Withdrawn EP1668883A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50608803P 2003-09-24 2003-09-24
US58682704P 2004-07-09 2004-07-09
PCT/US2004/031302 WO2005032115A2 (fr) 2003-09-24 2004-09-24 Dispositif portatif de stockage et de reproduction video

Publications (2)

Publication Number Publication Date
EP1668883A2 EP1668883A2 (fr) 2006-06-14
EP1668883A4 true EP1668883A4 (fr) 2007-07-11

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EP04784940A Withdrawn EP1668883A4 (fr) 2003-09-24 2004-09-24 Dispositif portatif de stockage et de reproduction video

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Country Link
EP (1) EP1668883A4 (fr)
WO (1) WO2005032115A2 (fr)

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