Patent ID: 8839304

Claim:
A system for sharing a channel map of digital broadcast in a home network, the system comprising: a Remote User Interface Server (RUIS) including a storage unit, for storing a channel map in the storage unit, the channel map including at least one digital broadcast channel, an occupied count field for indicating a number of devices using each of the at least one digital broadcast channel and an occupier indicator field including indicators of the devices using each of the at least one digital broadcast channel; and at least one Remote User Interface Client (RUIC) as one of the devices, for receiving and displaying at least one channel for which occupier indicator fields corresponds to an occupier indicator of the RUIC, wherein the channel map is shared by the at least one RUIC and is used for managing a digital broadcast channel list of each of the at least one RUIC through the occupied count field and the occupier indicator field, wherein, when the RUIC requests deletion of a channel, the RUIS determines a number of RUICs using the requested channel for deletion and deletes, when the channel is used by only one RUIC, the requested channel for deletion from the channel map, and wherein, when the channel is used by two or more RUICs, the RUIS decrements a value of the occupied count field corresponding to the requested channel for deletion by one and deletes the occupier indicator of the RUIC from the occupier indicator field corresponding to the requested channel for deletion.