Patent ID: 8631429

Claim:
A program managing method for use in a digital television, the method comprising steps of: receiving a channel switch signal; switching to a channel according to the channel switch signal; searching, a memory unit comprising a plurality of local rating region tables (RRTs) each corresponding to one of a plurality of channels, to determine whether a local rating region table corresponding to the channel is stored in a memory unit of the digital television; and playing programs of the channel according to a contents of the local rating region table when the local rating region table is stored in the memory unit of the digital television, if the local rating region table is not stored in the memory unit checking whether storage space is available in the memory unit of the digital television, and storing a remote rating region table of the channel into the memory unit of the digital television when storage space is available in the memory unit of the digital television, when the storage space is not available deleting at least one local rating region table of other channel and storing the remote rating region table of the channel into the memory unit of the digital television.