MX9604442A - Metodo para acoplar en serie de modulos de acceso condicionales separables, circuito para insertar una secuencia predeterminada y circuito para detectar dicha secuencia con el fin de implementar el metodo. - Google Patents

Metodo para acoplar en serie de modulos de acceso condicionales separables, circuito para insertar una secuencia predeterminada y circuito para detectar dicha secuencia con el fin de implementar el metodo.

Info

Publication number
MX9604442A
MX9604442A MX9604442A MX9604442A MX9604442A MX 9604442 A MX9604442 A MX 9604442A MX 9604442 A MX9604442 A MX 9604442A MX 9604442 A MX9604442 A MX 9604442A MX 9604442 A MX9604442 A MX 9604442A
Authority
MX
Mexico
Prior art keywords
circuit
sequence
separable
couple
insert
Prior art date
Application number
MX9604442A
Other languages
English (en)
Other versions
MXPA96004442A (es
Inventor
Mario De Vito
Original Assignee
Thomson Multimedia Sa
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 Thomson Multimedia Sa filed Critical Thomson Multimedia Sa
Publication of MX9604442A publication Critical patent/MX9604442A/es
Publication of MXPA96004442A publication Critical patent/MXPA96004442A/es

Links

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
    • H04N21/41—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
    • 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
    • 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
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • 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
    • H04N21/43—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
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)

Abstract

La presente invencion se refiere a un método para acoplar en serie modulos de acceso condicionales separables así como un circuito para insertar una secuencia predeterminada y un circuito para detectar dichas secuencias. En donde cada modulo tiene una corriente de datos que pasa a través del mismo, formada por paquetes de longitud fija separados por un espacio de longitud fija, el método consiste en el llenado de espacio entre paquetes (G1, G2, G3) con una secuencia predeterminada constante que no interfiere con el contenido util de los paquetes (P2, P3, P4), esta secuencia siendo utilizada para regenerar un reloj de paquete (RP), utilizando solo esta corriente de datos. Aplicacion a una television por pago. Figura 7.
MXPA/A/1996/004442A 1995-10-31 1996-09-30 Metodo para acoplar en serie modulos de acceso condicionales separables, circuito para insertar una secuencia predeterminada y circuito para detectar dicha secuencia con el fin de implementar el metodo MXPA96004442A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9512850 1995-10-31
FR9512850A FR2740636B1 (fr) 1995-10-31 1995-10-31 Procede permettant la mise en cascade de modules d'acces conditionnel detachables, circuit d'insertion d'une sequence predefinie et circuit de detection de ladite sequence pour la mise en oeuvre du procede

Publications (2)

Publication Number Publication Date
MX9604442A true MX9604442A (es) 1998-05-31
MXPA96004442A MXPA96004442A (es) 1998-10-23

Family

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Also Published As

Publication number Publication date
KR100433112B1 (ko) 2004-08-25
CN1154035A (zh) 1997-07-09
MY116684A (en) 2004-03-31
US6396850B1 (en) 2002-05-28
DE69620708T2 (de) 2002-10-31
FR2740636A1 (fr) 1997-04-30
DE69620708D1 (de) 2002-05-23
JP4338790B2 (ja) 2009-10-07
JP2007135230A (ja) 2007-05-31
CN1085462C (zh) 2002-05-22
FR2740636B1 (fr) 1997-11-28
KR970025120A (ko) 1997-05-30
EP0772361A1 (fr) 1997-05-07
ZA968477B (en) 1997-05-20
JPH09200267A (ja) 1997-07-31
EP0772361B1 (fr) 2002-04-17
JP4611967B2 (ja) 2011-01-12

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees