WO2005071943A1 - Circuito integrado para el procesamiento y posterior encaminamiento entre interfaces de datos mpeg (motion picture expert group) - Google Patents

Circuito integrado para el procesamiento y posterior encaminamiento entre interfaces de datos mpeg (motion picture expert group) Download PDF

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Publication number
WO2005071943A1
WO2005071943A1 PCT/ES2004/000029 ES2004000029W WO2005071943A1 WO 2005071943 A1 WO2005071943 A1 WO 2005071943A1 ES 2004000029 W ES2004000029 W ES 2004000029W WO 2005071943 A1 WO2005071943 A1 WO 2005071943A1
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WO
WIPO (PCT)
Prior art keywords
transport
processing
trains
interfaces
data
Prior art date
Application number
PCT/ES2004/000029
Other languages
English (en)
French (fr)
Inventor
Jose María ISENSER FARRE
Carlos Santos Pérez
José Luis AVELLANO FERNÁNDEZ
Javier MORÁN CARRERA
Original Assignee
Semiconductores, Investigación Y Diseño, S.A. (S.I.D.S.A.)
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 Semiconductores, Investigación Y Diseño, S.A. (S.I.D.S.A.) filed Critical Semiconductores, Investigación Y Diseño, S.A. (S.I.D.S.A.)
Priority to US10/596,806 priority Critical patent/US20070043892A1/en
Priority to PCT/ES2004/000029 priority patent/WO2005071943A1/es
Priority to DE04704245T priority patent/DE04704245T1/de
Priority to EP04704245A priority patent/EP1713252A1/en
Priority to CNA2004800399162A priority patent/CN1902904A/zh
Publication of WO2005071943A1 publication Critical patent/WO2005071943A1/es

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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
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • 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
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • 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
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4347—Demultiplexing of several video streams

Definitions

  • the invention presented consists of a single integrated circuit that processes the data from one or more MPEG data transport trains (acronyms that respond to Motion Picture Expert Group) for a different purpose and purpose, taking into account that , depending on the scenario in which this circuit is integrated, the interfaces and the external environment are very different.
  • MPEG data transport trains ascronyms that respond to Motion Picture Expert Group
  • the adaptation to one or another application is customized through a programmable and embedded hardware and software configuration.
  • This circuit would be integrated into a receiver system for digital television networks (either by satellite, terrestrial or cable) based on the digital video broadcasting standard (DNB) and common interface (DNB-CI), DBN-CI E ⁇ 50221 standard, as well as in the distribution in local networks and video recording and playback (PNR).
  • DB digital video broadcasting standard
  • DBN-CI E ⁇ 50221 standard
  • PNR video recording and playback
  • the present invention follows the standards established by various international organizations such as the DVB (Digital Video Broadcasting) and the ETSI (European Telecommunication Standard Institute) in relation to the encapsulation of multimedia information (video, audio and data) following the MPEG standard (Motion Picture Expert Group) ISO / IEC 13818-1 system. Explanation of the invention.
  • the circuit that constitutes the present invention is capable of incorporating and adapting to the aforementioned standards thanks to a hardware and software configuration that executes an embedded processor (PROC), which programs the processing and subsequent routing between interfaces of the MPEG (Motion data) Picture Expert Group). This programming is physically executed through a common internal bus (BUS).
  • PROC embedded processor
  • BUS common internal bus
  • the peripherals on their own initiative through direct access, or by the internal processor (PROC) (figure 1).
  • PROC internal processor
  • the configuration information of the data paths will reside in internal memories (MEM), which can be both volatile and non-volatile.
  • MEM internal memories
  • the integrated circuit object of the invention will integrate at least the following:
  • ISMCA and ISMCB smart card interfaces
  • the circuit thus defined has a minimum number of functionalities, which can be programmed either in hardware or software, but they are always included and available within the integrated circuit referred to in the present invention, also keeping a close relationship with the interfaces described above. Consequently, the functionalities of the invention are the following: 1. Conditional access to protected content from the transport train (CA)
  • SWAPTS Transport train switching
  • TSA transport train inputs
  • TSA, TSB transport train inputs
  • TSB transport train outputs
  • SELTS Transport train selector
  • HD2TS hard disk to transport train
  • Transport train gateway to local network (TS2LATST). This module includes multiplexing and concentration functions of transport trains over local networks.
  • LAN2TS Gateway from local network to transport train
  • This module includes functions of de-multiplexing and selection of transport trains encapsulated in local networks.
  • AG2TS Internal self-generation of transport train
  • Configuration 1 (figure 3): Processing of two incoming transport trains (ITSINA and ITSINB), to two outbound transport trains (ITSOUTA and ITSOUTB) with the possibility of independent or combined conditional access (CASWITCH), and with the possibility of hard disk recording (TS2HD) and playback from hard disk (HD2TS).
  • Said recording and playback can be simultaneous, one of the external transport trains can be recorded, while playing from the hard disk to one of the output transport trains.
  • Configuration 2 ( Figure 4): Processing of an input transport train (ITSINB), and a transport train synthesized internally from the processor (PROC) to two output transport trains (ITSOUTA and ITSOUTB) with the possibility of conditional access independent or combined (CASWITCH), and with the possibility of recording to hard disk (TS2HD) and reproduction from hard disk (HD2TS). Said recording and playback can be simultaneous, being able to record one of the external transport trains, while playing from hard disk to one of the output transport trains.
  • ITSINB input transport train
  • PROC transport train synthesized internally from the processor
  • ITSOUTA and ITSOUTB two output transport trains
  • CASWITCH conditional access independent or combined
  • TS2HD hard disk
  • HD2TS hard disk
  • Said recording and playback can be simultaneous, being able to record one of the external transport trains, while playing from hard disk to one of the output transport trains.
  • Configuration 3 ( Figure 5): Processing of an inbound transport train (ITSINB), and of a transport train from a local network access (ILAN), to two outbound transport trains (ITSOUTA and ITSOUTB) with the possibility of conditional independent or combined access (CASWITCH), and with the possibility of recording to hard disk (TS2HD) and reproduction from hard disk (HD2TS). Said recording and playback can be simultaneous, being able to record one of the external transport trains, while playing from hard disk to one of the output transport trains.
  • ITSINB inbound transport train
  • ILAN local network access
  • ITSOUTA and ITSOUTB two outbound transport trains
  • CASWITCH conditional independent or combined access
  • TS2HD hard disk
  • HD2TS hard disk
  • Said recording and playback can be simultaneous, being able to record one of the external transport trains, while playing from hard disk to one of the output transport trains.
  • Configuration 4 ( Figure 6): Processing of two transport trains from both a local network connection (ILAN) to two outbound transport trains (ITSOUTA and ITSOUTB) with the possibility of independent or combined conditional access (CASWITCH), and with the possibility of recording to hard disk (TS2HD) and reproduction from hard disk (HD2TS).
  • ILAN local network connection
  • ITSOUTA and ITSOUTB outbound transport trains
  • CASWITCH independent or combined conditional access
  • TS2HD hard disk
  • HD2TS hard disk
  • Such recording and playback can be simultaneously, being able to record one of the external transport trains, while playing from hard disk to one of the outgoing transport trains.
  • Configuration 5 ( Figure 7): Processing of two incoming transport trains (ITSINA and ITSINB), to a local network hub / multiplexer (ILAN) with the possibility of independent or combined conditional access (CASWITCH).
  • Settings 1 to 4 are typical of receiving systems, while 5 is a configuration associated with video, audio and data server systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Circuito integrado en un sistema receptor para redes de televisión digital que procesa y encamina los datos provenientes de uno a varios trenes de transporte de datos MPEG (Motion Picture Expert Group) entre dos o más interfaces o periféricos utilizando un procesador embebido (PROC) y un bus (BUS) común interno. El circuito integrado objeto de la invención integrará, al menos, los siguientes periféricos: 2 interfaces de tren de transporte MPEG de entrada (ITSINA e ITSINB); 2 interfaces de tren de transporte MPEG de salida (ITSOUTA e ITSOUTB); interfaz de disco duro (IHD); interfaz de red local (ILAN); 2 interfaces de tarjeta inteligente (ISMCA e ISMCB); interfaz maestra genérica a periféricos esclavos externos y memoria externa (IMB); interfaz esclava genérica desde otro dispositivo maestro externo (ISB).

Description

DESCRIPCIÓN
Título de la invención
CIRCUITO INTEGRADO PARA EL PROCESAMIENTO Y POSTERIOR ENCAMINAMIENTO ENTRE INTERFACES DE DATOS MPEG (MOTION PICTURE EXPERT GROUP)
Objeto de la invención La invención que se presenta consiste en un único circuito integrado que procesa los datos provenientes de uno o varios trenes de transporte de datos MPEG (siglas que responden a Motion Picture Expert Group) con diferente finalidad y propósito, teniendo en cuenta que, dependiendo del escenario en el que se integre dicho circuito, las interfaces y el entorno externo son muy distintos. La adaptación a una u otra aplicación se personaliza mediante una configuración de hardware y software programable y embebida.
Este circuito se integraría en un sistema receptor para redes de televisión digital (bien por satélite, terrestre o cable) basado en el estándar de emisión de vídeo digital (DNB) e interfaz común (DNB-CI), norma DBN-CI EΝ50221, así como en la distribución en redes locales y grabación y reproducción de vídeo (PNR).
Estado de la técnica La presente invención sigue los estándares establecidos por diversos organismos internacionales como el DVB (Digital Video Broadcasting) y el ETSI (European Telecommunication Standard Institute) en relación al encapsulado de información multimedia (vídeo, audio y datos) siguiendo el estándar MPEG (Motion Picture Expert Group) sistema ISO/IEC 13818-1. Explicación de la invención
El circuito que constituye la presente invención es capaz de incorporar y adaptarse a los estándares anteriormente citados gracias a una configuración de hardware y software que ejecuta un procesador embebido (PROC), que programa el procesamiento y posterior encaminamiento entre interfaces de los datos MPEG (Motion Picture Expert Group). Dicha programación se ejecuta físicamente a través de un bus (BUS) común interno.
Las transacciones y movimiento de información entre los distintos bloques y a través de dicho bus la realizarán los periféricos a iniciativa propia mediante accesos directos, ó bien la realizará el procesador (PROC) interno (figura 1). Tanto en un caso como en otro, la información de configuración de las rutas de datos residirá en memorias internas (MEM), las cuales pueden ser tanto volátiles como no volátiles. Aunque puede incorporar más periféricos, el circuito integrado objeto de la invención integrará, al menos, los siguientes:
- 2 interfaces de tren de transporte MPEG de entrada (ITSINA e ITSINB)
- 2 interfaces de tren de transporte MPEG de salida (ITSOUTA e ITSOUTB)
- Interfaz de disco duro (IHD) - Interfaz de red local (ILAN)
- 2 interfaces de tarjeta inteligente (ISMCA e ISMCB)
- Interfaz maestra genérica a periféricos esclavos externos y memoria externa (IMB)
- Interfaz esclava genérica desde otro dispositivo maestro externo (ISB)
Funcionalidades
El circuito así definido tiene un número mínimo de funcionalidades, pudiendo ser programadas bien en hardware o en software, pero siempre están incluidas y disponibles dentro del circuito integrado al que hace referencia la presente invención, guardando además una estrecha relación con los interfaces anteriormente descritos. En consecuencia las funcionalidades de la invención son las siguientes: 1. Acceso condicional a contenidos protegidos provenientes del tren de transporte (CA)
2. Módulo de conmutación entre diversos accesos condicionales (CASWITCH) 3. Conmutación de tren de transporte (SWAPTS). Se trata de una función con dos entradas de tren de transporte (TSA,TSB) y dos salidas de tren de transporte que pueden ser, dependiendo de la lógica de selección (TSA,TSA), (TSA,TSB),(TSB,TSB) ó (TSB,TSA). 4. Selector de tren de transporte (SELTS). Se trata de una función con dos entradas de tren de transporte (TSA, TSB), y una salida que, dependiendo de la lógica de selección puede ser TSA ó TSB.
5. Pasarela de tren de transporte a disco duro (TS2HD)
6. Pasarela de disco duro a tren de transporte (HD2TS)
7. Pasarela de tren de transporte a red local (TS2LATST). Este módulo incluye funciones de multiplexación y concentración de trenes de transporte sobre redes locales.
8. Pasarela de red local a tren de transporte (LAN2TS). Este módulo incluye funciones de de-multiplexación y selección de trenes de transporte encapsulados en redes locales. 9. Auto-generación interna de tren de transporte (AG2TS)
Configuraciones de la invención
Gracias a la programabilidad de la arquitectura es posible combinar y encaminar los periféricos con las funciones en numerosas configuraciones distintas, de las cuales son de especial relieve para la invención las siguientes: Configuración 1 (figura 3): Procesamiento de dos trenes de transporte de entrada (ITSINA e ITSINB), a dos trenes de transporte de salida (ITSOUTA e ITSOUTB) con posibilidad de acceso condicional independiente ó combinado (CASWITCH), y con la posibilidad de grabación a disco duro (TS2HD) y reproducción desde disco duro (HD2TS). Dicha grabación y reproducción puede ser simultánea, pudiéndose grabar uno de los trenes de transporte externo, mientras se reproduce desde disco duro a uno de los trenes de transporte de salida.
Configuración 2 (figura 4): Procesamiento de un tren de transporte de entrada (ITSINB), y de un tren de transporte sintetizado internamente desde el procesador (PROC) a dos trenes de transporte de salida (ITSOUTA e ITSOUTB) con posibilidad de acceso condicional independiente ó combinado (CASWITCH), y con la posibilidad de grabación a disco duro (TS2HD) y reproducción desde disco duro (HD2TS). Dicha grabación y reproducción puede ser simultánea, pudiéndose grabar uno de los trenes de transporte externo, mientras se reproduce desde disco duro a uno de los trenes de transporte de salida.
Configuración 3 (figura 5): Procesamiento de un tren de transporte de entrada (ITSINB), y de un tren de transporte proveniente de un acceso a red local (ILAN), hacia dos trenes de transporte de salida (ITSOUTA e ITSOUTB) con posibilidad de acceso condicional independiente ó combinado (CASWITCH), y con la posibilidad de grabación a disco duro (TS2HD) y reproducción desde disco duro (HD2TS). Dicha grabación y reproducción puede ser simultánea, pudiéndose grabar uno de los trenes de transporte externo, mientras se reproduce desde disco duro a uno de los trenes de transporte de salida.
Configuración 4 (figura 6): Procesamiento de dos trenes de transporte provenientes ambos de una conexión a red local (ILAN) hacia dos trenes de transporte de salida (ITSOUTA e ITSOUTB) con posibilidad de acceso condicional independiente ó combinado (CASWITCH), y con la posibilidad de grabación a disco duro (TS2HD) y reproducción desde disco duro (HD2TS). Dicha grabación y reproducción puede ser simultánea, pudiéndose grabar uno de los trenes de transporte extemo, mientras se reproduce desde disco duro a uno de los trenes de transporte de salida.
Configuración 5 (figura 7): Procesamiento de dos trenes de transporte de entrada (ITSINA e ITSINB), hacia un concentrador / multiplexor de red local (ILAN) con posibilidad de acceso condicional independiente ó combinado (CASWITCH).
Las configuraciones 1 a 4 son típicas de sistemas receptores, mientras que la 5 es una configuración asociada a sistemas servidores de vídeo, audio y datos.

Claims

REIVINDICACIONES
- Circuito integrado en un sistema receptor para redes de televisión digital caracterizado por ser capaz de procesar el flujo de datos provenientes de uno o varios trenes de transporte de datos MPEG con funciones diversas de tal forma que se adapta tanto a aplicaciones de receptores como a servidores de información multimedia (vídeo, audio y datos).- El circuito objeto de la invención se caracteriza por su versatilidad al incorporar una estructura de bus interno único, en el cual las transacciones se pueden originar tanto a iniciativa del procesador embebido en dicho circuito como a iniciativa de los periféricos.- El circuito objeto de la invención se caracteriza asimismo por incorporar subsistemas con funciones de encaminamiento y de procesamiento, implementadas mediante hardware ó software, y que son utilizadas como módulos que conforman las distintas configuraciones posibles del circuito.- La invención se caracteriza por tener la función específica de conmutación entre dos o más sistemas de acceso condicional. Aunque se ha descrito para el caso de 2 accesos condicionales sobre 2 trenes de transporte independientes, la presente reivindicación es extrapolable a cualquier número de accesos condicionales y trenes de transporte.- La invención se caracteriza por ser fácilmente configurable, permitiendo al menos las siguientes funcionalidades: 1- Procesamiento de dos trenes de transporte de entrada a dos trenes de transporte de salida; 2- Procesamiento de un tren de transporte de entrada (ITSINB), y de un tren de transporte sintetizado internamente desde el procesador (PROC) a dos trenes de transporte de salida; 3- Procesamiento de un tren de transporte de entrada (ITSINB), y de un tren de transporte proveniente de un acceso a red local (ILAN), hacia dos trenes de transporte de salida; 4- Procesamiento de dos trenes de transporte provenientes ambos de una conexión a red local (ILAN) hacia dos trenes de transporte de salida y 5- Procesamiento de dos trenes de transporte de entrada (ITSINA e ITSINB), hacia un concentrador / multiplexor de red local.
PCT/ES2004/000029 2004-01-22 2004-01-22 Circuito integrado para el procesamiento y posterior encaminamiento entre interfaces de datos mpeg (motion picture expert group) WO2005071943A1 (es)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/596,806 US20070043892A1 (en) 2004-01-22 2004-01-22 Integrated circuit for the processing and subsequent routing of motion picture expert group (mpeg) data between interfaces
PCT/ES2004/000029 WO2005071943A1 (es) 2004-01-22 2004-01-22 Circuito integrado para el procesamiento y posterior encaminamiento entre interfaces de datos mpeg (motion picture expert group)
DE04704245T DE04704245T1 (de) 2004-01-22 2004-01-22 Integrierte schaltung zum verarbeiten und nachfolgenden routen von mpeg-daten (motion picture expert group) zwischen schnittstellen
EP04704245A EP1713252A1 (en) 2004-01-22 2004-01-22 Integrated circuit for the processing and subsequent routing of motion picture expert group (mpeg) data between interfaces
CNA2004800399162A CN1902904A (zh) 2004-01-22 2004-01-22 动态图像专家组数据接口之间的处理和后续路由的集成电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2004/000029 WO2005071943A1 (es) 2004-01-22 2004-01-22 Circuito integrado para el procesamiento y posterior encaminamiento entre interfaces de datos mpeg (motion picture expert group)

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WO2005071943A1 true WO2005071943A1 (es) 2005-08-04

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US (1) US20070043892A1 (es)
EP (1) EP1713252A1 (es)
CN (1) CN1902904A (es)
DE (1) DE04704245T1 (es)
WO (1) WO2005071943A1 (es)

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US20070043892A1 (en) 2007-02-22

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