Patent ID: 8286201

Claim:
A data processing method of a digital broadcasting receiver, the data processing method comprising: receiving a mobile/handheld (MH) broadcasting signal including mobile service data and main service data; generating Reed-Solomon (RS) frames from the received MH broadcasting signal; extracting control data from a first RS frame, wherein: the control data includes charge adjustment information required to use a service provided by at least one service provider, an encrypted control message (ECM), and an entitlement management message (EMM); the service is encrypted; the charge adjustment information includes information identifying that the service is a pay service, information identifying a type of a charge adjustment method, and amount information of the service; the ECM includes an encrypted control word, charge adjustment information, and signature information; the EMM includes an encrypted authentication key and signature information; and the step of extracting the control data comprises: extracting IP datagram from the first RS frame; and extracting the control data from the extracted IP datagram; determining whether the service is available by comparing the extracted charge adjustment information with balance information written in a smart card; controlling a second RS frame using the control data such that an encrypted service of the second RS frame is decrypted if the service is available; mapping the extracted charge adjustment information with a corresponding service provider and storing the mapped charge adjustment information; requesting recharge of an amount written in the smart card; calculating charge adjustment information allocated to each service provider based on the stored charge adjustment information; and transmitting the calculated charge adjustment information per service provider to a billing server by encrypting the calculated charge adjustment information.