SERVER, CLIENT DEVICE, METHOD FOR GENERATING A TRASNPORT STREAM THEREOF AND PROCESSING THE TRASNPORT STREAM THEREOF

PURPOSE: A server, a client device, a transmission stream generation method, and a transmission stream processing method are provided to change and update a device key for each a desired period and a channel. CONSTITUTION: A scrambler(110) scrambles broadcast content by using a specific key. A contr...

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Bibliographic Details
Main Authors PARK, JI SOON, KANG, DONG JIN, AHN, DAVE
Format Patent
LanguageEnglish
Korean
Published 29.03.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PURPOSE: A server, a client device, a transmission stream generation method, and a transmission stream processing method are provided to change and update a device key for each a desired period and a channel. CONSTITUTION: A scrambler(110) scrambles broadcast content by using a specific key. A control unit(120) generates a transmission stream by adding a content encoding message, which includes the specific key, and a device key, which obtains the specific key from the content encoding message, to the broadcast content. A transmitting unit(130) transmits the transmission stream to a client device. [Reference numerals] (110) Scrambler; (120) Control unit; (130) Transmitting unit
Bibliography:Application Number: KR20110095393