KR970068617A - In a separate DBS system of digital DBS, - Google Patents

In a separate DBS system of digital DBS, Download PDF

Info

Publication number
KR970068617A
KR970068617A KR1019960008706A KR19960008706A KR970068617A KR 970068617 A KR970068617 A KR 970068617A KR 1019960008706 A KR1019960008706 A KR 1019960008706A KR 19960008706 A KR19960008706 A KR 19960008706A KR 970068617 A KR970068617 A KR 970068617A
Authority
KR
South Korea
Prior art keywords
mpeg
transmission data
transmission
dbs
block
Prior art date
Application number
KR1019960008706A
Other languages
Korean (ko)
Other versions
KR100227347B1 (en
Inventor
김창기
Original Assignee
정장호
엘지정보통신 주식회사
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 정장호, 엘지정보통신 주식회사 filed Critical 정장호
Priority to KR1019960008706A priority Critical patent/KR100227347B1/en
Publication of KR970068617A publication Critical patent/KR970068617A/en
Application granted granted Critical
Publication of KR100227347B1 publication Critical patent/KR100227347B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/15—Arrangements for conditional access to broadcast information or to broadcast-related services on receiving information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2351—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving encryption of additional data
    • 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
    • H04N21/23614—Multiplexing of additional data and 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/14—Aspects of broadcast communication characterised by the type of broadcast system direct broadcast satellite [DBS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

본 발명은 디지탈 DBS(Direct Broadcasting Satellite ;직접위성방송)의 제한수신 시스템(Conditional Access System)에 관한 것으로, 특히 디지탈 DBS의 송신 장치에서 제한수신 시스템을 분리시켜 다양한 운영이 가능하도록 한 디지탈 DBS의 분리형 제한수신 시스템에서 송신 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Conditional Access System (DBS) of a digital DBS (Direct Broadcasting Satellite), and more particularly to a digital DBS To a transmitting apparatus in a conditional access system.

그런데, 종래에는 제한수신을 원하지 않는 경우에도 제한 수신을 위한 복잡한 동작을 수행하여야 하므로 번거로우며 해당 제한수신을 원하지 않는 송신 장치에 대한 비용만 상승시키는 문제점이 있다.However, in the prior art, even if the restricted reception is not desired, complicated operations for limited reception must be performed, which is cumbersome and raises the cost of a transmitting apparatus that does not want to receive the restricted reception.

본 발명에 의해 전송신호발생 블록과 제한수신 블록을 분리시켜 개별 제품으로 사용될 수 있게 함으로써, 제한수신을 원하지 않는 송신 장치는 제한수신 블록을 사용하지 않아 비용을 절감하고 개별 제품의 제한수신 블록으로 다양한 운영을 할 수가 있다.The transmission signal generation block and the conditional reception block can be separated and used as individual products, so that the transmission device that does not want to receive the restricted reception does not use the restricted reception block, I can operate it.

Description

디지탈 DBS의 분리형 제한수신 시스템에서 송신 장치In a separate DBS system of digital DBS,

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제 2도는 본 발명에 따른 디지탈 DBS의 분리형 제한수신 시스템에서 송신 장치를 나타낸 구성 블록도이다.FIG. 2 is a block diagram illustrating a transmitting apparatus in a separate DBMS of the digital DBS according to the present invention.

Claims (3)

디지탈 DBS의 제한수신 시스템에서 송신 장치에 있어서, 외부의 장치로부터 벌스트신호와 비디오/오디오/데이타 신호를 인가받아 MPEG-Ⅱ 전송데이타열로 생성하여 데스트디코더나 변조기로 전송하는 전송신호발생 블록과; 가입자관리시스템으로부터 인가되는 암호화 키와 제어단어를 이용하여 상기 전송신호발생 블록으로부터 인가되는 MPEG-Ⅱ 전송데이타열을 스크램블링하고, 해당 스크램블링된 MPEG-Ⅱ 전송데이타열과 해당 가입자관리시스템으로부터 인가되는 자격관리메세지와 자격통제 메세지를 다중화하여 상기 테스트디코더나 변조기로 전송하는 제한수신 블록을 포함하는 것을 특징으로 하는 디지탈 DBS의 분리형 제한 수신 시스템에서 송신 장치.In a transmission system in a digital DBS limited receiving system, a transmission signal generating block receives a blur signal and a video / audio / data signal from an external device, generates an MPEG-II transmission data stream, and transmits the MPEG-II transmission data stream to a decoder and a modulator ; II transmission data sequence applied from the transmission signal generating block using the encryption key and the control word applied from the subscriber management system, scrambles the MPEG-II transmission data sequence corresponding to the scrambled MPEG-II transmission data sequence, And a conditional access block for multiplexing the message and the qualification control message and transmitting the multiplexed message to the test decoder and the modulator. 제 1항에 있어서, 상기 전송신호발생 블록은 외부의 장치로부터 벌스트신호를 인가받아 클럭을 생성하는 클럭발생부와; 상기 블럭발생부으로부터 클럭을 인가받아 상기 외부의 장치로부터 인가되는 비디오/오디오/데이타 신호를 부호화하여 MPEG-Ⅱ 전송데이타열로 생성하여 직접 상기 테스트디코더가 변조기로 전송하는 인코더부를 포함하는 것을 특징으로 하는 디지탈 DBS의 분리형 제한수신시템에서 송신 장치.The apparatus of claim 1, wherein the transmission signal generating block includes: a clock generating unit receiving a blast signal from an external device to generate a clock; And an encoder for receiving a clock from the block generator and encoding a video / audio / data signal applied from the external device to generate an MPEG-II transmission data stream and directly transmitting the MPEG-II transmission data stream to the modulator. A transmitting device in a detachable conditional access system of a digital DBS. 제 1항에 있어서, 상기 제한수신 블록은 상기 가입자관리시스템으로부터 인가되는 제어단어를 저장하는 메모리부와; 상기 가입자관리시스템으로부터 인가되는 암호화 키와 상기 메모리부에 저장된 제어단어를 이용하여 상기 전송신호발생 블록으로부터의 인가되는 MPEG-Ⅱ 전송데이타열을 스크램블링하는 제한수신처리부와; 상기 제한수신처리부와 밀결합 형태로 되어 있고, 상기 스크램블링된 MPEG-Ⅱ 전송데이타열을 인가받아 상기 가입자관리시스템으로부터 인가되는 자격관리메세지와 자격통제메세지와 함게 다중화하여 상기 테스트디코더나 변조기로 전송하는 멀티플렉서부를 포함하는 것을 특징으로 하는 DBS의 분리형 제한수신 시스템에서 송신 장치.The system of claim 1, wherein the conditional access block comprises: a memory unit for storing control words applied from the subscriber management system; A restriction reception processor for scrambling an MPEG-II transmission data stream applied from the transmission signal generation block using an encryption key applied from the subscriber management system and a control word stored in the memory; And transmits the scrambled MPEG-II transmission data string to the test decoder or the modulator by multiplexing the scrambled MPEG-II transmission data string together with the entitlement management message and the entitlement control message received from the subscriber management system And a multiplexer unit. The transmitting apparatus in the DBS separable type conditional access system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960008706A 1996-03-28 1996-03-28 Transmission apparatus in the separated limited receiving system of a digital dbs KR100227347B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960008706A KR100227347B1 (en) 1996-03-28 1996-03-28 Transmission apparatus in the separated limited receiving system of a digital dbs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960008706A KR100227347B1 (en) 1996-03-28 1996-03-28 Transmission apparatus in the separated limited receiving system of a digital dbs

Publications (2)

Publication Number Publication Date
KR970068617A true KR970068617A (en) 1997-10-13
KR100227347B1 KR100227347B1 (en) 1999-11-01

Family

ID=19454196

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960008706A KR100227347B1 (en) 1996-03-28 1996-03-28 Transmission apparatus in the separated limited receiving system of a digital dbs

Country Status (1)

Country Link
KR (1) KR100227347B1 (en)

Also Published As

Publication number Publication date
KR100227347B1 (en) 1999-11-01

Similar Documents

Publication Publication Date Title
US6108422A (en) Conditional access system, downloading of cryptographic information
EP0132007B1 (en) Authorising coded signals
JP3565715B2 (en) Broadcast system and broadcast transceiver
KR920702158A (en) External security module for television signal decoder
KR100252972B1 (en) Conditional access system
SK82496A3 (en) Method and apparatus for controlling the operation of a signal decoder in a broadcasting system
JP2743988B2 (en) Visual scramble control word generation method and television receiver
US5243650A (en) Method and apparatus for encryption/decryption of digital multisound in television
HUP0301133A2 (en) Pay tv receiver, removable security modul, removable decoder and method for controlling data transmission in pay tv receivers
ES2193705T3 (en) COMMUNICATIONS NETWORK.
KR930701079A (en) Method and apparatus for scrambling and unscrambling composite video signal
NO923933L (en) PROCEDURE FOR AA SYNCHRONIZE THE PSEUDO-CASUAL BINARY SEQUENCE IN A DESCRAMBLER
KR940010811A (en) Scrambled system
US4636854A (en) Transmission system
KR970068617A (en) In a separate DBS system of digital DBS,
KR970064233A (en) How messages are handled for conditional conditional access services
JPH0715715A (en) Image ciphering transmission system
KR20010005574A (en) Conditional access
MXPA05008152A (en) Pay television, method for revoking rights in such a system, associated decoder and smart card, and message transmitted to such a decoder.
JP2002158651A (en) Chain key broadcast reception system and chain key broadcast receiving method
JP2000174714A (en) Device for encoding, transmitting and receiving multimedia object
KR980700751A (en) SCRAMBLED INFORMATION TRANSMITTING AND RECEIVING METHOD
JPS62189A (en) Charged broadcasting system
US4651205A (en) Television transmission system
KR970002969B1 (en) Apparatus for processing encrypted broadcasting signal

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee