Patent ID: 8422584

Claim:
A transmission device comprising: a transmitting and receiving section configured to transmit and receive signals to and from a receiving device along a cable by using a transmission band in which a plurality of transmission channels are allocated along a frequency axis, the cable having a transmission characteristic such that attenuation of the signal to be transmitted increases with the frequency of the signal; a multiplex processing section configured to divide an input video signal into a plurality of packets which comply with a predetermined transmission standard and select a transmission channel, as a transmission path for each of the plurality of packets, from among the plurality of transmission channels; a control section configured to cause the multiplex processing section to select a transmission channel, wherein a transmission channel to which a lower frequency band is allocated is preferentially selected; a modulation section configured to modulate, by using a multicarrier modulation method, the plurality of packets to each of which one of the plurality of transmission channels is allocated and to output the modulated packets to the transmitting and receiving section, and a first packet generation section configured to divide the input video signal into first packets, the first packets each being divided into second packets which are the plurality of packets and being transmission units used for transmitting data to device, wherein the cable is a triax cable, the multicarrier modulation method is an OFDM (Orthogonal Frequency-Division Multiplexing) modulation method, the predetermined transmission standard corresponds to a MPEG-2 (Moving Picture Experts Group-2) system, the first packets are RTP (Real-time Transport Protocol) packets, and the second packets are TS (Transport Stream) packets.