Method for updating key in DCATV conditional access system

Method for updating key in DCATV conditional access system

The present invention properly updates a key in various situations in order to secure liability of a service in a conditional access system for a digital cable television service. A method for updating a key in a conditional access system of a digital cable television service includes the step of re...

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Hauptverfasser: Koo, Han-Seung, Kwon, Eun-Jung, Kim, TaeKyoon, Kwon, O-Hyung, Ahn, Chieteuk
Format: Patent
Sprache:eng
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creator Koo, Han-Seung
Kwon, Eun-Jung
Kim, TaeKyoon
Kwon, O-Hyung
Ahn, Chieteuk
description The present invention properly updates a key in various situations in order to secure liability of a service in a conditional access system for a digital cable television service. A method for updating a key in a conditional access system of a digital cable television service includes the step of receiving a request of changing service from a point of deployment (POD) module of subscriber having bidirectional or simplex receiver, changing a service at the head/end and sending an entitlement management message (EMM) having a changed key from the head/end to the point of deployment (POD) module.
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title Method for updating key in DCATV conditional access system
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