Patent ID: 7567588

Claim:
A transmission system for multiplexing and serially transmitting an uncompressed baseband digital video signal, a digital audio signal, and a digital auxiliary signal representative of auxiliary information such as a video format and an audio format, comprising: a first storing means for storing pixel data for the digital video signal in predetermined units; a second storing means for storing the digital audio signal in predetermined audio sample units in response to a sampling frequency synchronized with a transmission master clock oscillator and managing the stored digital audio signal in predetermined units; a third storing means for storing the digital auxiliary signal; a transmission signal generating means for multiplexing first synchronizing data defined for a vertical synchronizing signal for the digital video signal, second synchronizing data defined for effective line identification for the digital video signal, the digital video signal read from the first storing means, the digital audio signal read from the second storing means, and the digital auxiliary signal read from the third storing means in predetermined order in time series into a transmission signal representative of a plurality of lines; and an output means for serially transmitting the transmission signal provided by the transmission signal generating means, the transmission signal generating means forming the first of the lines the transmission signal represents by reading the first synchronizing data, reading a predetermined number of bits of the digital auxiliary signal from the third storing means, and multiplexing the read data pieces in time series, forming the second of the lines the transmission signal represents by reading the second synchronizing data, reading a predetermined number of bits of the digital auxiliary signal from the third storing means, and multiplexing the read data pieces in time series, and forming each of the third to a predetermined ordinal number of the lines the transmission signal represents by reading the second synchronizing data, sequentially reading, from the digital audio signal stored in the second storing means, a data segment of L (L is a natural number) that is obtained by dividing a sampled data quantity of M bytes (M is a natural number) of the digital audio signal to be transmitted per field by the number N (N is a natural number) of effective lines covered by the digital video signal, sequentially reading effective pixel data for the line in question from the digital video signal stored in the first storing means, and multiplexing the read data pieces in time series, thereby forming the transmission signal having no blanking signals.