WO2006135516A2 - Security and transcoding system for transfer of content to portable devices - Google Patents
Security and transcoding system for transfer of content to portable devices Download PDFInfo
- Publication number
- WO2006135516A2 WO2006135516A2 PCT/US2006/018160 US2006018160W WO2006135516A2 WO 2006135516 A2 WO2006135516 A2 WO 2006135516A2 US 2006018160 W US2006018160 W US 2006018160W WO 2006135516 A2 WO2006135516 A2 WO 2006135516A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- content data
- data
- content
- encrypted
- portable media
- Prior art date
Links
- 238000012546 transfer Methods 0.000 title description 12
- 238000013500 data storage Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 8
- 238000007781 pre-processing Methods 0.000 claims description 4
- 208000006930 Pseudomyxoma Peritonei Diseases 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229920000306 polymethylpentene Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/22—Arrangements for preventing the taking of data from a data transmission channel without authorisation
-
- 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
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
-
- 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 present invention relates to the field of digital audio and video player devices and more particularly to a portable media player and subscription service system.
- compressed digital audio and video formats such as the Motion Picture Experts Group-Layer 3 (MP3) and (MPEG) have caused the growth in popularity of recording, storing, transferring, and playing back digital audio and video data on computers and portable media player (PMP) devices.
- compressed digital audio and video formats enable more efficient storage and transmission of high-quality audio and video content by reducing the amount of digital data that needs to be stored and transmitted, resulting in data files that could be a fraction of the original uncompressed digital file without unacceptably degrading the quality of the output.
- PMP devices having the capability to download content from a computer or other broadband access devices (hereinafter simply referred to as a "host"), usually connected to the Internet, have been gaining popularity in the marketplace.
- host broadband access devices
- conventional PMPs are capable of allowing their users to (1) transfer compressed media files from a host to the PMPs through the use of associated transfer management software installed on the host and a physical connection to the host, such as a USB cable or other means; (2) store such compressed media files in memory; (3) decode for playback any of a variety of compression algorithms; (4) convert a compressed or uncompressed digital file to an analog format, potentially also processing the signal to enhance the resulting sound and images; (5) process and amplify the resulting analog signal; and (6) produce high- fidelity sound and video for the user, which may be played, paused, fast-forwarded, rewound, skipped or replayed instantly and on-demand.
- Programmed entertainment is currently available to consumers through traditional broadcast media and through other means that generally require the use of a device connected to a wired input, such as Internet-based streaming, accessible through laptop and desktop computers and digital cable television and radio services, accessible through cable-connected television sets.
- a device connected to a wired input such as Internet-based streaming, accessible through laptop and desktop computers and digital cable television and radio services, accessible through cable-connected television sets.
- subscription-based commercial satellite broadcast services such as DirecTV, cable, DSL or other broadband wireless distribution services for television enable consumers to receive hours of programming by selecting among available stations.
- a system for passing content data from a subscription service to a portable media device has a set-top box for receiving the content data from the subscription service.
- a data storage device is operatively connected with the set-top box.
- a preprocessor is operatively connected to the data storage device, applies encryption to the content data and has an output to the portable media device.
- Figure 1 is a block diagram of an illustrative embodiment of a security and transcoding model for transfer of content tool portable media device
- Figure 2 is a block diagram of a second illustrative embodiment of the security and transcoding model for transfer of content to a portable media device
- FIG. 3 is a block diagram of a portable media device for use in the models of
- FIG. 1 shows a system for accessing content from a subscription-based broadcast service utilizing a PMP.
- the system shown here is designed to protect the media content from unauthorized copying and/or further distribution from the PMP.
- a set-top box (STB) 10 contains a transport processor 14 which receives incoming signals from a link layer of a broadcast system as is well known.
- the transport processor 14 is operatively connected to a conditional access processor 16 which passes processed signals to an audiovisual decoder 18.
- the decoded signal is passed from the audiovisual decoder 18 to an NTSC decoder for display by conventional techniques.
- the conditional access processor 16 is operatively connected to a secure audiovisual chip 12 which may be activated by a smartcard 13 containing unique user , or equipment identification coding as is know in the art.
- a hard disk drive 20 may optionally be provided within the STB 10 or external to the STB 10 as shown.
- Pre-processing software 30 is applied to the stored program stream and control data on the hard disk drive 20. Utilizing the preprocessing software 30, the program stream and control data are encrypted, transcoded and/or transrated to prepare the program stream and control data for output to a PMP.
- Content data is placed on the hard disk drive 20 in the broadcast encrypted form, and subsequently decrypted in the conditional access processor 16 for either decoding for display per normal operation or preprocessing for subsequent application • such as a transfer to a PMP.
- the preprocessing software 30 may apply transcoding/transrating and software encryption.
- Transcoding is employed to generally change the resolution, compression format, or compression rate.
- transrating is a simpler operation that can also reduce the rate, and therefore file size and image quality.
- a transcoding operation is generally flexible but demanding on the host processor. The transrating operation is limited to rate reduction at the expense of image quality.
- the preprocessing software 30 receives input from the conditional access processor 16. Transcoding and/or transrating are applied to the incoming data at 32 followed by a software encryption at 34. The transcoded/transrated encrypted data is then stored on the hard disk drive 20.
- That data may then be decrypted and decoded at 38, 36 for output to the NTSC decoder and/or may be output to the PMP which contains similar de-encrypting and decoding capabilities in a de-encryption subsystem for de-encrypting the content data for playback on the PMP display.
- a first alternate embodiment is shown in Figure 2 wherein content data first passes through the conditional access processor 16 to remove broadcast encryption, is reencrypted with a local encryption mechanism (hardware or software based) and then is stored on the hard disk drive 20.
- the set-top box 10 pulls the content data from the hard disk drive 20, decrypts it, and then feeds it into the transcode/transrating/software encryption preprocessing software 32, 34 in preparation for transfer to the PMP.
- the preprocessing software 30 could be a non-real time operation.
- the transcoded/transrated/software encrypted information could be stored back in the hard disk drive 20. This allows for off-line non-real time content preparation for transfer to the PMP.
- FIG. 3 An example of a portable media player is shown in Figure 3 in block form. It should be understood that while an exemplary portable device, the PMP, is shown here, other portable devices such as personal digital assistants, cellular phones, smart phones etc. capable of receiving the stored content data are within spirit of the invention.
- a digital signal processor 40 is driven by a microcontroller 44. Controls such as control keys, switches, infrared receivers and other control devices are operatively connected to the microcontroller 44 for allowing user input and control.
- the device is powered by a power block 70 having a battery 72 and a charger controller 74 operatively connected to the battery 72 and a DC input jack 76.
- Memory is provided in the form of NOR flash memory 46 and SDRAM 48 being operatively connected to the digital signal processor 40 and a hard disk drive 50.
- An input output jack 54 or other docking bay connector 58 receives composite video input which is fed through a video ADC 52 to the digital signal processor 40. The composite video output is also fed from the digital signal processor 42 to the input output jack 54 or other docking bay connector 58. This allows for natively compressed analog content to be presented to the PMP.
- An audio codec and headphone amplifier 56 is connected between a digital signal processor and the connectors 54, 58.
- a speaker 60 is connected to the headphone amplifier 56.
- An SD card slot 62 is provided for connecting external memory to the digital signal processor 40.
- An LCD display 64 is also connected to the digital signal processor 40 as an output device.
- the PMP also has USB input and output capability through a USB mini jack 66, a data switch 68 and USB interface 69. Transfer of content data from the systems of Figures 1 or 2 may be provided through either of the connector 58 or the USB jack 66. As discussed earlier, content on the hard disk drive 20 could be transferred transcoded/transrated and/or encrypted in the host before being transferred to the PMP's hard disk drive 50.
- the PMP includes a de-encryption subsystem having the appropriate mechanisms to decrypt and decode the content for the end user's consumption.
- desired content data such as a movie
- desired content data is stored from the set-top box 10 on to the hard disk drive 20. Since the set top box received the data from a subscriber service, it is encrypted before broadcast.
- the desired content data may be stored on the hard disk drive 20 either before removing broadcast encryption as shown in Figure 1 or may be stored on the hard disk drive 20 after de-encrypting and applying a local encryption mechanism as shown in Figure 2.
- the stored content data could either be transformed (through a set of processes including transcoding or transrating and encryption if necessary) in real-time or off-line as described earlier.
- the preprocessed content data is then transported to the portable media device shown in Figure 3.
- the portable media device has de-encrypting capabilities to restore the content data that has been preprocessed prior to transport.
- data may be transferred to a portable device from the subscription service through a set-top box 10 with authorized copy protection provided by the preprocessor 30 and de-encryption on the portable device.
- portable media devices such as personal digital assistants, cellular phones, smart phones etc. are intended to be within the scope of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Storage Device Security (AREA)
- Television Signal Processing For Recording (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06784397A EP1880548A4 (en) | 2005-05-13 | 2006-05-11 | Security and transcoding system for transfer of content to portable devices |
JP2008511335A JP2008546047A (en) | 2005-05-13 | 2006-05-11 | Security and transcoding system for transferring content to portable devices |
US11/920,037 US20090097643A1 (en) | 2005-05-13 | 2006-05-11 | Security and transcoding system for transfer of content to portable devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68069705P | 2005-05-13 | 2005-05-13 | |
US60/680,697 | 2005-05-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2006135516A2 true WO2006135516A2 (en) | 2006-12-21 |
WO2006135516A3 WO2006135516A3 (en) | 2007-03-22 |
WO2006135516B1 WO2006135516B1 (en) | 2007-04-26 |
Family
ID=37532766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/018160 WO2006135516A2 (en) | 2005-05-13 | 2006-05-11 | Security and transcoding system for transfer of content to portable devices |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090097643A1 (en) |
EP (1) | EP1880548A4 (en) |
JP (1) | JP2008546047A (en) |
KR (1) | KR20080007584A (en) |
CN (1) | CN101176344A (en) |
MY (1) | MY143832A (en) |
WO (1) | WO2006135516A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2265014A3 (en) * | 2009-06-16 | 2011-02-23 | Comcast Cable Communications, LLC | Portable media asset |
Families Citing this family (6)
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EP2020818A3 (en) * | 2007-07-30 | 2016-11-23 | Broadcom Corporation | Integrated circuit with conversion capability for portable media player |
US8194732B2 (en) * | 2007-07-30 | 2012-06-05 | Broadcom Corporation | Integrated circuit with conversion capability for portable media player |
US8136139B1 (en) * | 2008-04-10 | 2012-03-13 | Sprint Communications Company L.P. | Receiving over-the-air licenses to high-quality media content |
US20120159146A1 (en) * | 2010-12-20 | 2012-06-21 | General Instrument Corporation | System and Method for Transcoding Content |
KR101110142B1 (en) * | 2011-07-01 | 2012-01-31 | 이츠미디어(주) | Authentication system |
KR101629274B1 (en) * | 2012-07-10 | 2016-06-13 | 주식회사 케이티 | Apparatus and method for transmitting contents |
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JP3678164B2 (en) * | 2001-04-13 | 2005-08-03 | ソニー株式会社 | Data transfer system, data transfer device, data recording device, and data transfer method |
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JP2003224822A (en) * | 2002-01-30 | 2003-08-08 | Toshiba Corp | Digital signal receiving apparatus, digital signal receiving method, and digital signal receiving system |
CN100479455C (en) * | 2002-04-05 | 2009-04-15 | 松下电器产业株式会社 | Content using system |
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-
2006
- 2006-05-10 MY MYPI20062147A patent/MY143832A/en unknown
- 2006-05-11 CN CNA2006800163638A patent/CN101176344A/en active Pending
- 2006-05-11 US US11/920,037 patent/US20090097643A1/en not_active Abandoned
- 2006-05-11 WO PCT/US2006/018160 patent/WO2006135516A2/en active Application Filing
- 2006-05-11 KR KR1020077026220A patent/KR20080007584A/en not_active Application Discontinuation
- 2006-05-11 JP JP2008511335A patent/JP2008546047A/en active Pending
- 2006-05-11 EP EP06784397A patent/EP1880548A4/en not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of EP1880548A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2265014A3 (en) * | 2009-06-16 | 2011-02-23 | Comcast Cable Communications, LLC | Portable media asset |
US8392959B2 (en) | 2009-06-16 | 2013-03-05 | Comcast Cable Communications, Llc | Portable media asset |
Also Published As
Publication number | Publication date |
---|---|
US20090097643A1 (en) | 2009-04-16 |
MY143832A (en) | 2011-07-15 |
JP2008546047A (en) | 2008-12-18 |
KR20080007584A (en) | 2008-01-22 |
WO2006135516B1 (en) | 2007-04-26 |
EP1880548A2 (en) | 2008-01-23 |
CN101176344A (en) | 2008-05-07 |
EP1880548A4 (en) | 2009-08-12 |
WO2006135516A3 (en) | 2007-03-22 |
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