WO2007064135A1 - Apparatus and method for the efficient processing of digital broadcasting signal transmitted through ethernet in a form of internet protocol - Google Patents

Apparatus and method for the efficient processing of digital broadcasting signal transmitted through ethernet in a form of internet protocol Download PDF

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Publication number
WO2007064135A1
WO2007064135A1 PCT/KR2006/005071 KR2006005071W WO2007064135A1 WO 2007064135 A1 WO2007064135 A1 WO 2007064135A1 KR 2006005071 W KR2006005071 W KR 2006005071W WO 2007064135 A1 WO2007064135 A1 WO 2007064135A1
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WO
WIPO (PCT)
Prior art keywords
ethernet
data
register
internet protocol
transport stream
Prior art date
Application number
PCT/KR2006/005071
Other languages
French (fr)
Inventor
Hosang Yu
Original Assignee
Alticast Corp.
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 Alticast Corp. filed Critical Alticast Corp.
Publication of WO2007064135A1 publication Critical patent/WO2007064135A1/en

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/82—Wired systems using signals not modulated onto a carrier
    • 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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • 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
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • 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 an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol. More particularly, the present invention relates to an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol capable of reducing the load of CPU and memory bus.
  • Fig. 1 is a block diagram illustrating the conventional apparatus and method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol.
  • the conventional apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol comprises an Ethernet socket (10), a memory bus (20), a CPU (30) which generates a control signal, a command bus (40), a descrambler/transport stream demultiplexer (50) which descrambles and demultiplexes transport stream data, a DMA controller (60), an MPEG video decoder (70) and an audio processor (80).
  • Digital broadcasting signal multicast through Ethernet in a form of Internet protocol is transmitted to the Ethernet socket (10).
  • the Ethernet socket (10) transmits the received digital broadcasting signal to the memory bus (20).
  • the transport stream data of the transmitted data is transmitted to the descrambler/transport stream demultiplexer (50) and processed there.
  • the digital broadcasting signal is transmitted to a display (not illustrated) and a speaker (not illustrated) of the user.
  • a great load is generated at the CPU (30) and the memory bus (40) as the MPEG-2 transport stream data is transmitted in a form of IP (Internet protocol) data at a rate of 4 Mbps to dozens of Mbps.
  • IP Internet protocol
  • the present invention has been made to solve this problem and an object of the present invention is to provide an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol.
  • the present invention provides an apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol that comprises an Ethernet socket which receives the digital broadcasting signal multicast through Ethernet in a form of Internet protocol, a memory bus, a CPU (central processing unit) which generates a control signal, a command bus, a descrambler/transport stream demultiplexer which descrambles and demultiplexes transport stream data, a DMA (direct memory access) controller, an MPEG (moving picture experts group) video decoder and an audio processor, wherein the apparatus further comprises an IP demultiplexing unit which, if output data of the Ethernet socket belongs to a particular IP (Internet protocol) or a port registered into a register, searches and parses UDP (user datagram protocol) packet of the data, transforms it into MPEG-2 transport packet and routes it to the descrambler/transport stream demultiplexer and, if the output data of the Ethernet socket does not belong to the IP or the port registered into the register,
  • IP Internet protocol
  • the present invention provides a method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol comprising: receiving the digital broadcasting signal multicast through Ethernet in a form of Internet protocol using an Ethernet socket; determining if output data of the Ethernet socket belongs to a particular IP or a port registered into a register; if the output data of the Ethernet socket belongs to the particular IP or the port registered into the register, searching and parsing UDP packet of the data, transforming it into MPEG-2 transport packet and routing it to a descrambler/transport stream demultiplexer; and if the output data transmitted through the Ethernet socket does not belong to the IP or the port registered into the register, transmitting the data to a memory bus or a CPU.
  • Fig. 1 is a block diagram illustrating the conventional apparatus and method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol.
  • FIG. 2 is a block diagram illustrating a preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
  • FIG. 3 is a block diagram illustrating another preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
  • FIG. 4 is a flowchart illustrating a preferred embodiment of the method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
  • FIG. 2 is a block diagram illustrating a preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
  • the apparatus for the processing of digital broadcasting signal according to the present invention comprises an Ethernet socket (100), an IP demultiplexing unit (200) and a data processing unit (300).
  • the digital broadcasting signal multicast through Ethernet in a form of Internet protocol is transmitted to the Ethernet socket (100).
  • all the output data of the Ethernet socket (100) is transmitted to the data processing unit (300), passing through the memory bus (301) and the CPU (302) of the data processing unit (300).
  • the output data of the Ethernet socket (100) is transmitted to the descrambler/demultiplexer (303) passing through the memory bus (301) and the CPU (302), processed there, further processed by the MPEG video decoder (305) and the audio processor (306) with the help of the DMA controller (304) and then transmitted to a display (not illustrated) and a speaker (not illustrated) of the user.
  • the digital broadcasting signal processing apparatus of the present invention further comprises the IP demultiplexing unit (200) between the Ethernet socket (100) and the data processing unit (300). If output data of the Ethernet socket (100) belongs to a particular IP (Internet protocol) or a port registered into the register, the IP demultiplexing unit (200) searches and parses UDP (user datagram protocol) packet, transforms it into MPEG-2 transport packet and routes it to the de- scrambler/transport stream demultiplexer (303). If the output data of the Ethernet socket (100) does not belong to the IP or port registered into the register, the IP demultiplexing unit (200) transmits it to the memory bus or the CPU. At this time, the IP demultiplexing unit (200) receives the information about the IP or the port to be registered into the register through the command bus (307).
  • IP Internet protocol
  • UDP user datagram protocol
  • the IP demultiplexing unit (200) comprises:
  • [16] (1) a means (201) for executing the MPEG-2 transport stream connection command through the command bus (307) of the data processing unit (300) and, through the command bus (307), receiving a particular IP or a port and registering it into a register;
  • [17] (2) a means (202) for checking if the output data of the Ethernet socket (100) belongs to the IP or the port registered into the register;
  • [19] (4) a means (204) for, if the output data of the Ethernet socket (100) does not belong to the IP or port registered into the register, routing the data to the memory bus (301) or the CPU (302) of the data processing unit (300).
  • the IP demultiplexing unit (200) may be constructed as incorporate into either the
  • FIG. 2 illustrates a specific embodiment in which the IP demultiplexing unit (200) is incorporated with the Ethernet socket (100)
  • Fig. 3 illustrates a specific embodiment in which it is incorporated with the data processing unit (300).
  • the construction of Fig. 3 is the same as that of Fig. 2, except that the IP demultiplexing unit (200) is incorporated with the data processing unit (300). Thus, detailed description of Fig. 3 will be omitted.
  • FIG. 4 is a flowchart illustrating a preferred embodiment of the method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
  • a digital broadcasting signal multicast through Ethernet in a form of Internet protocol is received from an Ethernet socket (SlOO).
  • the output data of the Ethernet socket is transmitted to an IP demultiplexing unit.
  • the IP demultiplexing unit determines if the transmitted Ethernet data belongs to the IP or port registered into the register (S200).
  • the registering of a particular IP or port in the register is performed by the connection between the command bus of the data processing unit and the IP demultiplexing unit followed by the transmission of the particular IP or port to the demultiplexing unit through the command bus. If the data belongs to the IP or port registered into the register, the UDP packet of the transmitted Ethernet data is searched, parsed and then transformed into MPEG-2 transport stream (S300).
  • the transformed MPEG-2 transport stream is routed to the descrambler/transport stream demultiplexer of the data processing unit (S400). If the transmitted data is determined not to belong to the IP or port registered into the register in the step S200, it is transmitted to the memory bus or CPU of the data processing unit and processed under the control of the CPU (S500).
  • the data routed to the descrambler/transport stream demultiplexer by the IP demultiplexing unit and/or the data transmitted to the data processing unit through the memory bus is processed by the common process and transmitted to the user (S600).

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

Abstract

The present invention relates to an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol. The apparatus according to the present invention comprises an Ethernet socket which receives the digital broadcasting signal multicast through Ethernet in a form of Internet protocol, a memory bus, a CPU (central processing unit) which generates a control signal, a command bus, a descrambler/transport stream demultiplexer which descrambles and demultiplexes transport stream data, a DMA (direct memory access) controller, an MPEG (moving picture experts group) video decoder and an audio processor, characterized in that the apparatus further comprises an IP demultiplexing unit which, if output data of the Ethernet socket belongs to a particular IP (Internet protocol) or a port registered into a register, searches and parses UDP (user datagram protocol) packet of the data, transforms it into MPEG-2 transport packet and routes it to the descrambler/transport stream demultiplexer and, if the output data of the Ethernet socket does not belong to the IP or the port registered into the register, transmits the data to the memory bus or the CPU.

Description

Description
APPARATUS AND METHOD FOR THE EFFICIENT
PROCESSING OF DIGITAL BROADCASTING SIGNAL
TRANSMITTED THROUGH ETHERNET IN A FORM OF
INTERNET PROTOCOL Technical Field
[1] The present invention relates to an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol. More particularly, the present invention relates to an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol capable of reducing the load of CPU and memory bus. Background Art
[2] Fig. 1 is a block diagram illustrating the conventional apparatus and method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol. As illustrated in Fig. 1, the conventional apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol comprises an Ethernet socket (10), a memory bus (20), a CPU (30) which generates a control signal, a command bus (40), a descrambler/transport stream demultiplexer (50) which descrambles and demultiplexes transport stream data, a DMA controller (60), an MPEG video decoder (70) and an audio processor (80). Digital broadcasting signal multicast through Ethernet in a form of Internet protocol is transmitted to the Ethernet socket (10). Then, the Ethernet socket (10) transmits the received digital broadcasting signal to the memory bus (20). Under the control of the CPU (30), the transport stream data of the transmitted data is transmitted to the descrambler/transport stream demultiplexer (50) and processed there. After being further processed by MPEG video decoder (70) and the audio processor (80) with the help of the DMA controller (60), the digital broadcasting signal is transmitted to a display (not illustrated) and a speaker (not illustrated) of the user. In this process, a great load is generated at the CPU (30) and the memory bus (40) as the MPEG-2 transport stream data is transmitted in a form of IP (Internet protocol) data at a rate of 4 Mbps to dozens of Mbps.
Disclosure of Invention Technical Problem
[3] The present invention has been made to solve this problem and an object of the present invention is to provide an apparatus and a method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol. Technical Solution
[4] In a preferred embodiment, the present invention provides an apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol that comprises an Ethernet socket which receives the digital broadcasting signal multicast through Ethernet in a form of Internet protocol, a memory bus, a CPU (central processing unit) which generates a control signal, a command bus, a descrambler/transport stream demultiplexer which descrambles and demultiplexes transport stream data, a DMA (direct memory access) controller, an MPEG (moving picture experts group) video decoder and an audio processor, wherein the apparatus further comprises an IP demultiplexing unit which, if output data of the Ethernet socket belongs to a particular IP (Internet protocol) or a port registered into a register, searches and parses UDP (user datagram protocol) packet of the data, transforms it into MPEG-2 transport packet and routes it to the descrambler/transport stream demultiplexer and, if the output data of the Ethernet socket does not belong to the IP or the port registered into the register, transmits the data to the memory bus or the CPU.
[5] In another preferred embodiment, the present invention provides a method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol comprising: receiving the digital broadcasting signal multicast through Ethernet in a form of Internet protocol using an Ethernet socket; determining if output data of the Ethernet socket belongs to a particular IP or a port registered into a register; if the output data of the Ethernet socket belongs to the particular IP or the port registered into the register, searching and parsing UDP packet of the data, transforming it into MPEG-2 transport packet and routing it to a descrambler/transport stream demultiplexer; and if the output data transmitted through the Ethernet socket does not belong to the IP or the port registered into the register, transmitting the data to a memory bus or a CPU.
Advantageous Effects
[6] The apparatus and the method for the efficient processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention are advantageous in that the MPEG-2 transport stream data needs not pass through the memory bus and the CPU. Accordingly, the load of the memory bus and CPU can be reduced significantly. Brief Description of the Drawings [7] Fig. 1 is a block diagram illustrating the conventional apparatus and method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol.
[8] Fig. 2 is a block diagram illustrating a preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
[9] Fig. 3 is a block diagram illustrating another preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
[10] Fig. 4 is a flowchart illustrating a preferred embodiment of the method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention. Mode for the Invention
[11] Hereunder is given a more detailed description of the present invention referring to the accompanying drawings.
[12] Fig. 2 is a block diagram illustrating a preferred embodiment of the apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention. As illustrated in Fig. 2, the apparatus for the processing of digital broadcasting signal according to the present invention comprises an Ethernet socket (100), an IP demultiplexing unit (200) and a data processing unit (300).
[13] The digital broadcasting signal multicast through Ethernet in a form of Internet protocol is transmitted to the Ethernet socket (100). In the conventional method, all the output data of the Ethernet socket (100) is transmitted to the data processing unit (300), passing through the memory bus (301) and the CPU (302) of the data processing unit (300). Accordingly, even when the data is a transport stream data, which needs not pass through the memory bus (301) and the CPU (302), the output data of the Ethernet socket (100) is transmitted to the descrambler/demultiplexer (303) passing through the memory bus (301) and the CPU (302), processed there, further processed by the MPEG video decoder (305) and the audio processor (306) with the help of the DMA controller (304) and then transmitted to a display (not illustrated) and a speaker (not illustrated) of the user.
[14] In order to solve this problem, the digital broadcasting signal processing apparatus of the present invention further comprises the IP demultiplexing unit (200) between the Ethernet socket (100) and the data processing unit (300). If output data of the Ethernet socket (100) belongs to a particular IP (Internet protocol) or a port registered into the register, the IP demultiplexing unit (200) searches and parses UDP (user datagram protocol) packet, transforms it into MPEG-2 transport packet and routes it to the de- scrambler/transport stream demultiplexer (303). If the output data of the Ethernet socket (100) does not belong to the IP or port registered into the register, the IP demultiplexing unit (200) transmits it to the memory bus or the CPU. At this time, the IP demultiplexing unit (200) receives the information about the IP or the port to be registered into the register through the command bus (307).
[15] More specifically, the IP demultiplexing unit (200) comprises:
[16] (1) a means (201) for executing the MPEG-2 transport stream connection command through the command bus (307) of the data processing unit (300) and, through the command bus (307), receiving a particular IP or a port and registering it into a register;
[17] (2) a means (202) for checking if the output data of the Ethernet socket (100) belongs to the IP or the port registered into the register;
[18] (3) a means (203) for, if the output data of the Ethernet socket (100) belongs to the
IP or port registered into the register, searching and parsing UDP (user datagram protocol) packet of the data, transforming it into MPEG-2 transport stream packet and routing it to the descrambler/transport stream demultiplexer (303) of the data processing unit (300); and
[19] (4) a means (204) for, if the output data of the Ethernet socket (100) does not belong to the IP or port registered into the register, routing the data to the memory bus (301) or the CPU (302) of the data processing unit (300).
[20] The IP demultiplexing unit (200) may be constructed as incorporate into either the
Ethernet socket (100) or the data processing unit (300). Fig. 2 illustrates a specific embodiment in which the IP demultiplexing unit (200) is incorporated with the Ethernet socket (100) and Fig. 3 illustrates a specific embodiment in which it is incorporated with the data processing unit (300). The construction of Fig. 3 is the same as that of Fig. 2, except that the IP demultiplexing unit (200) is incorporated with the data processing unit (300). Thus, detailed description of Fig. 3 will be omitted.
[21] Fig. 4 is a flowchart illustrating a preferred embodiment of the method for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol according to the present invention.
[22] A digital broadcasting signal multicast through Ethernet in a form of Internet protocol is received from an Ethernet socket (SlOO). The output data of the Ethernet socket is transmitted to an IP demultiplexing unit. The IP demultiplexing unit determines if the transmitted Ethernet data belongs to the IP or port registered into the register (S200). The registering of a particular IP or port in the register is performed by the connection between the command bus of the data processing unit and the IP demultiplexing unit followed by the transmission of the particular IP or port to the demultiplexing unit through the command bus. If the data belongs to the IP or port registered into the register, the UDP packet of the transmitted Ethernet data is searched, parsed and then transformed into MPEG-2 transport stream (S300). Subsequently, the transformed MPEG-2 transport stream is routed to the descrambler/transport stream demultiplexer of the data processing unit (S400). If the transmitted data is determined not to belong to the IP or port registered into the register in the step S200, it is transmitted to the memory bus or CPU of the data processing unit and processed under the control of the CPU (S500). The data routed to the descrambler/transport stream demultiplexer by the IP demultiplexing unit and/or the data transmitted to the data processing unit through the memory bus is processed by the common process and transmitted to the user (S600).

Claims

Claims
[1] An apparatus for the processing of digital broadcasting signal transmitted through Ethernet in a form of Internet protocol (IP) that comprises an Ethernet socket which receives the digital broadcasting signal multicast through Ethernet in a form of Internet protocol, a memory bus, a CPU (central processing unit) which generates a control signal, a command bus, a descrambler/transport stream demultiplexer which descrambles and demultiplexes transport stream data, a DMA (direct memory access) controller, an MPEG (moving picture experts group) video decoder and an audio processor, wherein the apparatus further comprises an IP demultiplexing unit which, if output data of the Ethernet socket belongs to a particular IP (Internet protocol) or a port registered into a register, searches and parses UDP (user datagram protocol) packet of the data, transforms it into MPEG-2 transport packet and routes it to the descrambler/transport stream demultiplexer and, if the output data of the Ethernet socket does not belong to the IP or the port registered into the register, transmits the data to the memory bus or the CPU.
[2] The apparatus as set forth in claim 1, wherein the IP demultiplexing unit comprises: a means for executing MPEG-2 transport stream connection command through the command bus, through the command bus, receiving the particular IP or the port and registering it into the register; a means for checking if the output data of the Ethernet socket belongs to the IP or port registered into the register; a means for, if the output data of the Ethernet socket belongs to the IP or port registered into the register, searching and parsing UDP packet of the output data, transforming it into MPEG-2 transport stream packet and routing it to the descrambler/transport stream demultiplexer; and a means for, if the output data of the Ethernet socket does not belong to the IP or port registered into the register, routing the data to the memory bus or the CPU.
[3] A method for the processing of digital broadcasting signal transmitted through
Ethernet in a form of Internet protocol comprising:
(a) receiving the digital broadcasting signal multicast through Ethernet in a form of Internet protocol using an Ethernet socket;
(b) determining if output data of the Ethernet socket belongs to a particular IP or a port registered into a register;
(c) if the output data of the Ethernet socket belongs to the particular IP or the port registered into the register, searching and parsing UDP packet of the data, transforming it into MPEG-2 transport packet and routing it to a descrambler/ transport stream demultiplexer; and (d) if the output data transmitted through the Ethernet socket does not belong to the IP or the port registered into the register, transmitting the data to a memory bus or a CPU.
PCT/KR2006/005071 2005-12-02 2006-11-28 Apparatus and method for the efficient processing of digital broadcasting signal transmitted through ethernet in a form of internet protocol WO2007064135A1 (en)

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KR10-2005-0116738 2005-12-02
KR1020050116738A KR100754983B1 (en) 2005-12-02 2005-12-02 Digital broadcasting processing apparatus and method for the processing of digital broadcasting signal transmitted through ethernet in a form of internet protocol

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US7876768B2 (en) 2006-06-30 2011-01-25 Ver Steeg William C Systems and methods of assembling an elementary stream from an encapsulated multimedia transport stream
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