WO2000059210A1 - Systeme d'interfaçage de dispositifs multiples d'acces conditionnel - Google Patents

Systeme d'interfaçage de dispositifs multiples d'acces conditionnel Download PDF

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Publication number
WO2000059210A1
WO2000059210A1 PCT/US2000/007214 US0007214W WO0059210A1 WO 2000059210 A1 WO2000059210 A1 WO 2000059210A1 US 0007214 W US0007214 W US 0007214W WO 0059210 A1 WO0059210 A1 WO 0059210A1
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WO
WIPO (PCT)
Prior art keywords
cards
type
circuit
nrss
standard
Prior art date
Application number
PCT/US2000/007214
Other languages
English (en)
Inventor
Brant L. Candelore
Original Assignee
Sony Electronics, 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 Sony Electronics, Inc. filed Critical Sony Electronics, Inc.
Priority to AU36310/00A priority Critical patent/AU3631000A/en
Publication of WO2000059210A1 publication Critical patent/WO2000059210A1/fr

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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]
    • H04N21/40—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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]

Definitions

  • the present invention is related to conditional access modules.
  • the present invention is related to interfacing multiple conditional access modules.
  • Modern set-top boxes generally have a receiver to receive program data, or content, from a service provider and generate multiple transport streams.
  • the content is normally scrambled before being transmitted to the receiver.
  • the scrambled content is then de-scrambled by a conditional access (CA) device.
  • CA conditional access
  • NRSS National Renewable Security System
  • NRSS part B module supporting a PCMCIA form factor In Europe, Digital Video Broadcasting (DVB) defines one type of CA device called Common Interface supporting a PCMCIA form factor.
  • the unscrambled content is then transferred to a digital device such as a display device (e.g., digital television) for program viewing or a recording device (e.g., digital video cassette recorder) for program recording.
  • a digital device such as a display device (e.g., digital television) for program viewing or a recording device (e.g., digital video cassette recorder) for program recording.
  • a display device e.g., digital television
  • a recording device e.g., digital video cassette recorder
  • multiple digital devices are connected to the conditional access device for simultaneous activities such as viewing while recording or viewing at different display locations.
  • Terrestrial broadcasters may each use different CA providers to perform access control on channels within their individual broadcast. Typically, a viewer may receive several, e.g., six or more, terrestrial channels. If each broadcaster uses a different CA vendor, then the number of CA slots to support these CA modules or devices may be large. Also, in the U.S., there are currently three Direct Broadcast Satellite (DBS) systems, DirecTV, Echostar and PrimeStar. Each uses a different conditional access provider. DBS functionality is being built into TVs which will also receive signals terrestrially. TV and set tops are also being built to descramble cable signals. Consequently, a television or an integrated set-top box may be required to support several CA devices, cards, or modules at the same time. This may result in complexity in hardware for the host or set-top box. Furthermore, a viewer may have to switch CA modules manually causing inconvenience.
  • DBS Direct Broadcast Satellite
  • the present invention is a method and apparatus for interfacing a plurality of cards to a device having a conditional access (CA) circuit.
  • a plurality of interface circuits provides access to the plurality of cards.
  • a processor is coupled to the plurality of interface circuits to communicate with one of the plurality of cards based on service information (SI) in a stream transmitted.
  • SI service information
  • the plurality of cards are IS07816 or National Renewable Security Standard (NRSS) type A cards which are interfaced to a television or set top device through a single NRSS type B or Digital Video Broadcasting (DVB) Common Interface Slot.
  • NRSS National Renewable Security Standard
  • the television or set top device needs only to deal with a single NRSS type B module.
  • a card is selected from a plurality of cards on the NRSS-B module based on the SI in a stream transmitted.
  • Figure 1 is a diagram illustrating a system in which one embodiment of the invention can be practiced.
  • Figure 2 is a diagram illustrating a digital receiver and a decoder according to one embodiment of the invention.
  • Figure 3 is a diagram illustrating a conditional access device according to one embodiment of the invention.
  • Figure 4 is a diagram illustrating an interface system according to one embodiment of the invention.
  • Figure 5 is a flowchart illustrating a process to interface to the plurality of cards according to one embodiment of the invention.
  • the present invention is a method and apparatus to interface a plurality of conditional access (CA) cards.
  • a plurality of interface circuits provides access to the plurality of smart cards.
  • a processor is coupled to the plurality of interface circuits to communicate with one of the plurality of cards based on service information (SI) in a stream transmitted through the CA circuit.
  • SI service information
  • the processor extracts a code from the SI identifying a channel selected by a user.
  • the plurality of cards are IS07816 or National Renewable Security Standard (NRSS) type A cards which are interfaced to a television or set top device through a single NRSS type B or Digital Video Broadcasting (DVB) Common Interface Slot.
  • NRSS National Renewable Security Standard
  • the television or set top device needs only to deal with a single NRSS type B module.
  • a card is selected from a plurality of cards on the NRSS-B module based on the SI in a stream transmitted.
  • the cards nay be NRSS type A or type B modules.
  • the NRSS modules can be selected individually or connected in a daisy chain manner to carry the transport stream.
  • the number of card slots in the integrated set-top box or CA device can be minimized.
  • the use of a processor to switch the cards is flexible and convenient to the user.
  • FIG. 1 is a diagram illustrating a system 100 in which one embodiment of the invention can be practiced.
  • the system 100 includes a program data receiver 110, a transmission medium 120, an audio system 130, a digital video recorder or player 140, a disk recording unit 150, a display 160, a control unit 170, and a network CA unit 180. Any of the audio system 130, the digital video recorder or player 140, the disk recording unit 150, the display 160 and the control unit 170, or any combination thereof may be referred to as a digital device.
  • the program data receiver 110 includes a digital receiver 112 and a decoder 114.
  • the digital receiver 112 receives digital bitstream or data including program data from one or more service providers.
  • service or content providers may include terrestrial broadcasters, cable operators, direct broadcast satellite (DBS) companies, companies providing content for download via the Internet, book publisher, software companies distributing software products, or any similar content and /or service provider.
  • the program data may include system information, entitlement control messages, entitlement management messages, content, and other data.
  • System information may include information on program names, time of broadcast, source, method of retrieving and decoding, copy management commands that provide digital receivers and other devices that control how, when, and what program data may be replayed, retransmitted, copied, and /or recorded.
  • copy management commands may also be transmitted along with entitlement control messages (ECM), which are generally used by the conditional access unit to regulate access to a particular channel or service.
  • ECM entitlement control messages
  • EMM Entitlement management messages
  • a decryption or de-scrambling key is generally a code that is required to restore the scrambled data, and may be a function of the rights granted.
  • content in the program data may include audio and video data, which may be in s scrambled or encrypted or clear format.
  • the program data receiver 110 is a television set where the digital receiver 112 is a set-top box integrated therein, and the decoder 114 is a Motion Picture Experts Group (MPEG) decoder.
  • MPEG Motion Picture Experts Group
  • the transmission medium 120 operates to transmit control information and data including program data between the program data receiver 110 and other components in the system 100.
  • the transmission medium 120 may include air, fiber optics, electronic and magnetic media, computer network connection, telephone connection, and any other communication media.
  • the audio system 130 is coupled to the transmission medium 130 to provide audio services.
  • the audio system 130 may include speakers, an audio player /recorder such as a compact disk player, or other magneto-optical disc that may be used to play and/or record audio data.
  • the digital video recorder /player 140 is coupled to the transmission medium 120 to provide video services.
  • the digital video recorder /player 140 may be used to record analog or digital video, audio, and other data transmissions. In one embodiment, the digital video recorder/player 140 may be used to replay or record the program data received by the program data receiver 110 and transmitted over the transmission medium 120.
  • the disk recording unit 150 may also be coupled to the program data receiver 110 and other components via the transmission medium 120.
  • the disk recording unit 150 may be a personal computer system, a stand-alone hard disk recording unit, or other disk recording device capable of recording analog or digital audio, video and data transmissions, including the program data received and transmitted by the program data receiver 110.
  • the display 160 may include a television display, a monitor display or other devices capable of processing and displaying video signals. In one embodiment, the display 160 is a digital television set.
  • the control unit 170 may also be coupled to the transmission medium 120 to coordinate and control the operation of some or each of the components on the system 100, as well as other devices remotely coupled thereto.
  • the network conditional access (CA) unit 180 may also be coupled to the transmission medium 120.
  • the network CA unit 180 operates to re-scramble program data with content in clear format such that the system 100 supports the simultaneous transmission of program data in clear and scrambled format.
  • the network CA unit 180 may be a CA device that operates as a second CA device in a system embodiment where the program data receiver 110 operates as a master CA device.
  • FIG. 2 is a diagram illustrating a digital receiver 112 according to one embodiment of the invention.
  • the digital receiver 112 includes a central processing unit (CPU) 210, a tuner 220, a demodulator 230, a conditional access (CA) unit 240, and a demultiplexer 250.
  • CPU central processing unit
  • CA conditional access
  • the control processing unit 210 performs control functions for the tuner 220, the CA unit 240 and the demultiplexer 250.
  • the CPU 210 may determine the frequency in which a channel is broadcast or otherwise transmitted.
  • the CPU 210 may support a graphical user interface (GUI), such as electronic programming guide (EPG) to allow a user to navigate through various channels and program options to select a desired channel or program for viewing, listening, recording and the like.
  • GUI graphical user interface
  • EPG electronic programming guide
  • the tuner 220 selects a frequency of the signal received by the program data receiver 110 (in Figure 1) under the control of the CPU 210.
  • the tuner 220 processes, amplifies, digitizes, and generates a bitstream to the demodulator 230.
  • the demodulator 230 demodulates the bitstream received from the tuner 220 to provide the program data as originally transmitted.
  • the type of demodulation performed by the demodulator 230 depends on the type of transmission as well as the modulation process used in the transmission process. Examples of the demodulation includes quadrature amplitude modulation (QAM) demodulation, quadrature phase shift key (QPSK) demodulation, and vestigial side band (VSB) demodulation.
  • the demodulator 230 may perform error correction on the received bitstream.
  • the conditional access unit 240 may be integral or external to the digital receiver 112.
  • the CA unit 240 provides conditional access to the program data as provided by the demodulator 230.
  • the program data is typically scrambled using an access key.
  • the CA unit 240 may be used in an external or split mode. In the external mode, the CA unit 240 de-scrambles the program data content and decrypts the keys externally; e.g., as is the case with the National Renewable Security System (NRSS) conditional access modules.
  • NRSS National Renewable Security System
  • the program data content is de-scrambled within the digital receiver 112, while the key decryption is done externally, e.g., via a smart card.
  • the demultiplexer 250 receives the de-scrambled or unscrambled content from the CA unit 240.
  • the demultiplexer 250 separates the system information from the content in the program data, and according to one embodiment, parses the program data for packet identifiers that are associated with the system information, audio information, and video information, and then transmits the system information to the control processing unit 210 and the audio and video information to the decoder 114 (in Figure 1).
  • the digital receiver 112 When the CA device 240 is used externally to the digital receiver 112, the digital receiver 112 is typically referred to as a host.
  • a host is used to describe a digital receiver or any device or system that can provide a transport stream to the CA device.
  • FIG. 3 is a diagram illustrating a conditional access (CA) device 240 according to one embodiment of the invention.
  • the CA device 240 includes a card interface circuit 310 and a CA circuit 320.
  • the card interface circuit 310 is coupled to the CA circuit 320 to provide interface between the CA device 240 and a plurality of cards 360, to 360 ⁇ .
  • the card interface circuit 310 includes a processor 330, a memory 340, and a plurality of interface circuits 350, to 350 ⁇ .
  • the CA circuit 320 de-scrambles a stream and generates a copy-protected stream to the host.
  • the CA circuit 320 includes a copy protection circuit 322 and a de-scrambler 324.
  • the de-scrambler 324 receives and de-scrambles a transport stream from the host to generate a de-scrambled stream.
  • the de-scrambler 324 receives the control and a de-scrambling key from the processor 330.
  • the copy protection circuit 322 receives the de-scrambled stream from the de-scrambler 324 and generates a copy-protected stream to the host. In general, the host then receives a de-scrambled and copy-protected stream from the CA device 240.
  • the processor 330 provides control and coordination of conditional access operations including communication with the plurality of cards 360, to 360 ⁇ .
  • the processor 330 extracts a code from the service information (SI) embedded in a stream from one of the cards 360, to 360 ⁇ .
  • SI contains a code identifying a channel selected by a user.
  • the memory 340 is coupled to the processor 330 to provide program and data corresponding to the identified channel.
  • the memory 340 includes program/ data 342, to 342 ⁇ corresponding to the cards 360, to 360 ⁇ , respectively.
  • the processor 330 uses the extracted code as a pointer to execute the program and use the data from the program/data 342, to 342 ⁇ .
  • the interface circuits 350, to 350 ⁇ provide access to the cards 360, to 360 ⁇ , respectively.
  • Each of the 350, to 350 ⁇ operates to conform with the standard of the corresponding card.
  • the card standard may be one of smart, personal computer memory card international association (PCMCIA), personal computer (PC), small PC, miniature, smart media, multimedia, compact flash, National Renewable Security Standard (NRSS) type A and type B card standards.
  • PCMCIA personal computer memory card international association
  • PC personal computer
  • NRSS National Renewable Security Standard
  • the CA device 240 supports a system that have several CA streams provided by the cards 360, to 360 ⁇ . In this manner, when the CA device 240 is integrated with the host like in the case of an integrated set-top box and a television set, the channel switching can be done by the processor rather than by manual switching of the CA modules.
  • FIG 4 is a diagram illustrating an interface system 400 according to one embodiment of the invention.
  • the interface system 400 includes the CA device 240 and a plurality of modules 410, to 410 ⁇ .
  • the CA device 240 is the same as described in Figure 3.
  • the interface circuits 350, to 350 ⁇ have proper interface to the corresponding modules.
  • Each of the modules 410, to 410 ⁇ may be another CA device or module.
  • the card 410 is a smart card or a PCMCIA card.
  • Each of the modules 410 2 to 410 ⁇ may be an NRSS type A or type B module.
  • the modules 410 2 to 410 ⁇ include de-scrambler 412 2 to 412 ⁇ , respectively.
  • the card 410 sends a control word to the processor 330 for writing to the scrambler 324.
  • Each of the modules 410 2 to 410 ⁇ de-scrambles the transport stream on its own. In this way, the de-scrambling may be replaced by changing the modules 410 2 to 410 ⁇ that are plugged into the CA device 240.
  • the transport stream travels into one of the modules 410 2 to 410 ⁇ in use.
  • the modules 410 2 to 410 ⁇ may be connected in a daisy chain manner or can be selected individually by the processor 330.
  • Figure 5 is a flowchart illustrating a process 500 to interface to the plurality of cards according to one embodiment of the invention.
  • the process 500 receives a transport stream corresponding to a content provided by the host or a CA module (Block 510). Then the process 500 extracts a code from the service information (SI) in the transport stream (Block 520).
  • SI processing is performed in accordance to the relevant standard, e.g., the Digital Video Broadcasting (DVB) standard provided by the European Telecommunications Standard Institute (ETSI) EN 300468 VI .3.1.
  • DVD Digital Video Broadcasting
  • ETSI European Telecommunications Standard Institute
  • the process 500 executes a program stored in the memory corresponding to the channel identified by the extracted code (Block 530). Then, the process 500 communicates with one of the cards or modules corresponding to the identified channel (Block 540). The process 500 is then terminated. While this invention has been described with reference to illustrative embodiments, this description is not intended to be construed in a limiting sense. Various modifications of the illustrative embodiments, as well as other embodiments of the invention, which are apparent to persons skilled in the art to which the invention pertains are deemed to lie within the spirit and scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention est un procédé et un appareil d'interfaçage d'une pluralité de cartes (360, ..., 360k) à un dispositif (240) ayant un circuit (320) d'accès conditionnel (AC). Une pluralité de circuits d'interface (350, ..., 350k) fournit un accès à la pluralité de cartes (360, ..., 360k). Un processeur (330) est couplé à la pluralité de circuits d'interface (350, ..., 350k) afin de communiquer avec une des cartes sur la base d'informations de service (IS) dans une suite transmise.
PCT/US2000/007214 1999-03-30 2000-03-17 Systeme d'interfaçage de dispositifs multiples d'acces conditionnel WO2000059210A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36310/00A AU3631000A (en) 1999-03-30 2000-03-17 System for interfacing multiple conditional access devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12690099P 1999-03-30 1999-03-30
US60/126,900 1999-03-30
US43270199A 1999-11-02 1999-11-02
US09/432,701 1999-11-02

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WO2000059210A1 true WO2000059210A1 (fr) 2000-10-05

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Cited By (15)

* Cited by examiner, † Cited by third party
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WO2002035763A2 (fr) * 2000-10-27 2002-05-02 Scm Microsystems Gmbh Module pour la transmission securisee de donnees
WO2002035829A1 (fr) * 2000-10-26 2002-05-02 Koninklijke Philips Electronics N.V. Systeme d"extension de decodeur
EP1511314A1 (fr) * 2003-08-29 2005-03-02 Thomson Licensing S.A. Appareil de contrôle, appareil d'activation de lecture de carte à puce et produits associés
EP1511313A1 (fr) * 2003-08-29 2005-03-02 Thomson Licensing S.A. Appareil de contrôle, appareil d'activation de lecture de carte à puce et produits associés
EP1638332A2 (fr) * 2004-09-20 2006-03-22 Advanced Digital Broadcast Polska Sp. zo.o. Système de service des systèmes d'accès conditionnel et procédé de service des systèmes d'accès conditionnel
EP1642386A2 (fr) * 2003-05-12 2006-04-05 Sony Electronics Inc. Carte de cablage configurable
EP1675389A1 (fr) * 2003-09-19 2006-06-28 Matsushita Electric Industrial Co., Ltd. Module recepteur de television numerique, et recepteur de television numerique utilisant ce module
EP1954027A2 (fr) * 2007-01-30 2008-08-06 Samsung Electronics Co., Ltd. Procédé pour fournir des informations d'accès de contrôle et appareil de réception vidéo à utiliser avec celui-ci
WO2009115882A1 (fr) * 2008-03-19 2009-09-24 Ro.Ve.R. Laboratories S.P.A. Dispositif destiné à mesurer des signaux de télévision
EP1760919A3 (fr) * 2005-07-26 2009-12-23 Samsung Electronics Co., Ltd. Dispostif et procédé pour la réception de signaux DMB et pour la reproduction d'audio
CN102984581A (zh) * 2012-12-12 2013-03-20 青岛海信宽带多媒体技术有限公司 一种机顶盒系统及机顶盒检测方法
US8484671B1 (en) * 2003-10-07 2013-07-09 The Directv Group, Inc. Receiver interface with multiple access cards
EP2615845A3 (fr) * 2012-01-16 2014-04-02 Samsung Electronics Co., Ltd. Appareil de traitement d'images et son procédé de commande
WO2012173680A3 (fr) * 2011-06-14 2014-04-24 Sony Corporation Dispositif récepteur de télévision comportant de multiples modes de déchiffrement
CN109729430A (zh) * 2018-12-20 2019-05-07 青岛海信传媒网络技术有限公司 一种提示信息的处理方法、装置及电视机

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Cited By (26)

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Publication number Priority date Publication date Assignee Title
WO2002035829A1 (fr) * 2000-10-26 2002-05-02 Koninklijke Philips Electronics N.V. Systeme d"extension de decodeur
WO2002035763A3 (fr) * 2000-10-27 2002-07-04 Scm Microsystems Gmbh Module pour la transmission securisee de donnees
WO2002035763A2 (fr) * 2000-10-27 2002-05-02 Scm Microsystems Gmbh Module pour la transmission securisee de donnees
EP1642386A2 (fr) * 2003-05-12 2006-04-05 Sony Electronics Inc. Carte de cablage configurable
KR101048843B1 (ko) * 2003-05-12 2011-07-13 소니 일렉트로닉스 인코포레이티드 구성가능한 케이블카드
EP1642386A4 (fr) * 2003-05-12 2010-08-18 Sony Electronics Inc Carte de cablage configurable
EP1511314A1 (fr) * 2003-08-29 2005-03-02 Thomson Licensing S.A. Appareil de contrôle, appareil d'activation de lecture de carte à puce et produits associés
KR101096682B1 (ko) * 2003-08-29 2011-12-22 톰슨 라이센싱 제어 디바이스, 스마트 카드 판독 활성화 디바이스 및 관련 제품
US8561120B2 (en) 2003-08-29 2013-10-15 Thomson Licensing S.A. Control device, smart card reading activation device and associated products
EP1511313A1 (fr) * 2003-08-29 2005-03-02 Thomson Licensing S.A. Appareil de contrôle, appareil d'activation de lecture de carte à puce et produits associés
EP1675389A1 (fr) * 2003-09-19 2006-06-28 Matsushita Electric Industrial Co., Ltd. Module recepteur de television numerique, et recepteur de television numerique utilisant ce module
EP1675389A4 (fr) * 2003-09-19 2008-12-03 Panasonic Corp Module recepteur de television numerique, et recepteur de television numerique utilisant ce module
US8108889B2 (en) 2003-09-19 2012-01-31 Panasonic Corporation Digital television receiver module and digital television receiver using the same
US8484671B1 (en) * 2003-10-07 2013-07-09 The Directv Group, Inc. Receiver interface with multiple access cards
EP1638332A3 (fr) * 2004-09-20 2010-04-07 Advanced Digital Broadcast S.A. Système de service des systèmes d'accès conditionnel et procédé de service des systèmes d'accès conditionnel
EP1638332A2 (fr) * 2004-09-20 2006-03-22 Advanced Digital Broadcast Polska Sp. zo.o. Système de service des systèmes d'accès conditionnel et procédé de service des systèmes d'accès conditionnel
EP1760919A3 (fr) * 2005-07-26 2009-12-23 Samsung Electronics Co., Ltd. Dispostif et procédé pour la réception de signaux DMB et pour la reproduction d'audio
EP1954027A3 (fr) * 2007-01-30 2011-11-16 Samsung Electronics Co., Ltd. Procédé pour fournir des informations d'accès de contrôle et appareil de réception vidéo à utiliser avec celui-ci
US8321886B2 (en) 2007-01-30 2012-11-27 Samsung Electronics Co., Ltd. Method of providing controlled-access information and video receiving apparatus to use the same
EP1954027A2 (fr) * 2007-01-30 2008-08-06 Samsung Electronics Co., Ltd. Procédé pour fournir des informations d'accès de contrôle et appareil de réception vidéo à utiliser avec celui-ci
WO2009115882A1 (fr) * 2008-03-19 2009-09-24 Ro.Ve.R. Laboratories S.P.A. Dispositif destiné à mesurer des signaux de télévision
WO2012173680A3 (fr) * 2011-06-14 2014-04-24 Sony Corporation Dispositif récepteur de télévision comportant de multiples modes de déchiffrement
EP2615845A3 (fr) * 2012-01-16 2014-04-02 Samsung Electronics Co., Ltd. Appareil de traitement d'images et son procédé de commande
CN102984581A (zh) * 2012-12-12 2013-03-20 青岛海信宽带多媒体技术有限公司 一种机顶盒系统及机顶盒检测方法
CN102984581B (zh) * 2012-12-12 2015-08-05 青岛海信宽带多媒体技术有限公司 一种机顶盒系统及机顶盒检测方法
CN109729430A (zh) * 2018-12-20 2019-05-07 青岛海信传媒网络技术有限公司 一种提示信息的处理方法、装置及电视机

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