초록

A process for the digital transmission of video signals, wherein the signals to be transmitted are coded according to a variable codeword length code, and this code is adapted at time intervals, preferably at regular time intervals, to a statistic of the signals transmitted.

대표청구항 ▼

In a method of transmitting digital data, including processing digital data as groups of values in a source coder, encoding the values of the groups in a variable codeword length encoder according to a defined variable codeword length code to provide signals corresponding to the values of the groups

In a method of transmitting digital data, including processing digital data as groups of values in a source coder, encoding the values of the groups in a variable codeword length encoder according to a defined variable codeword length code to provide signals corresponding to the values of the groups, feeding the signals corresponding to the values of the groups to a channel coder and then to a transmission channel, and finally feeding the signals corresponding to the values from the transmission channel through a channel decoder and a variable codeword length decoder to a source decoder, the improvement comprising: adapting the defined variable codeword length code to a statistical frequency of the occurrence of the values of the groups being transmitted at desired time intervals; and transmitting at least the changes in the adapted variable codeword length code via the channel coder, the transmission channel and the channel decoder to the variable codeword length encoder.