Digital communication system using packet assembling/disassembling and eight-to-fourteen bit encoding/decoding

Claim 1

A digital communication system comprising a transmitter station and a receiver station for communicating therebetween data at the transmitter station and the receiver station in different forms by means of a carrier wave: the transmitter station including: packet means for assembling a plurality of data words having an original format into a packet, each data word including at least one byte of data; encoding means for encoding the data in the packet from an initial eightbit form into a fourteen-bit form; and modulating means for modulating a carrier wave by the encoded data so as to transmit the packet of encoded data in the fourteen-bit form; and the receiver station including: demodulating means receptive of the modulated carrier wave from the modulating means for demodulating the same to separate therefrom the packet of encoded data into the fourteen-bit form before modulation at the transmitter station; decoding means for decoding the encoded data in the packet from the fourteen-bit form into the initial eight-bit form of the original format of the plurality of data words in a packet; and unpacket means for disassembling the packet of decoded data to restore, at the receiver station, the plurality of data words having the original format, wherein the transmitter station further includes database means for storing karaoke data for transmission of the karaoke data in response to a request for a karaoke song from the receiver station the request formed by data communicated through the digital communication system, from the receiver station to the transmitter station, and the receiver station further includes performance means for performing the karaoke song according to the karaoke data transmitted from the transmitter station.