Abstract: A method of setting at least a mapping between a channel number and a program number is provided. The method includes receiving a virtual channel table (VCT) and a program association table (PAT) transmitted via a communication channel, comparing the VCT and the PAT to generate a comparison result, and determining a mapping between a specific channel number and a specific program number according to the comparison result.

Abstract: A packet processing apparatus includes a packet identifying unit and a packet modifying unit. The packet identifying unit is utilized for receiving a plurality of packets and checking identification information and data length information which are derived from the received packets to identify first packets from the received packets. The packet modifying unit is coupled to the packet identifying unit, and is utilized for checking payloads of the first packets to identify second packets from the first packets, where each of the second packets has specific data included in a payload thereof, and for modifying at least the payload of each of the second packets.

Abstract: A packet processing apparatus includes a packet identifying unit and a packet modifying unit. The packet identifying unit is utilized for receiving a plurality of packets and checking identification information derived from the received packets to identify first packets from the received packets. The packet modifying unit is coupled to the packet identifying unit, and is utilized for checking payloads of the first packets to identify second packets from the first packets, where each of the second packets has specific data included in a payload thereof, and for modifying at least the payload of each of the second packets.

Abstract: A packet processing apparatus includes a packet identifying unit and a packet modifying unit. The packet identifying unit is utilized for receiving a plurality of packets and checking identification information and data length information which are derived from the received packets to identify first packets from the received packets. The packet modifying unit is coupled to the packet identifying unit, and is utilized for checking payloads of the first packets to identify second packets from the first packets, where each of the second packets has specific data included in a payload thereof, and for modifying at least the payload of each of the second packets.

Abstract: A packet processing apparatus includes a packet identifying unit and a packet modifying unit. The packet identifying unit is utilized for receiving a plurality of packets and checking identification information derived from the received packets to identify first packets from the received packets. The packet modifying unit is coupled to the packet identifying unit, and is utilized for checking payloads of the first packets to identify second packets from the first packets, where each of the second packets has specific data included in a payload thereof, and for modifying at least the payload of each of the second packets.

Abstract: A method of setting at least a mapping between a channel number and a program number is provided. The method includes receiving a virtual channel table (VCT) and a program association table (PAT) transmitted via a communication channel, comparing the VCT and the PAT to generate a comparison result, and determining a mapping between a specific channel number and a specific program number according to the comparison result.

Abstract: A channel list indicates a channel subset of a sequence of candidate channel locations. The channel list is stored in an electronic apparatus that receives and processes multimedia programs carries by channels in the channel subset. Instead of scanning every candidate channel location, the electronic apparatus partially scans the sequence of the channel locations by skipping channel locations of the channel subset. In addition, full channel scanning as well as validity check for the channel subset is applicable for updating the channel list.