TRANSMITTING DEVICE FOR TRANSMITTING A DIGITAL INFORMATION SIGNAL ALTE NATELY IN ENCODED FORM AND NON-ENCODED FORM.

摘要

A TRANSMITTER IS DISCLOSED FOR TRANSMITTING A DIGITAL INFORMATION SIGNAL VIA A TRANSMISSION MEDIUM. THE DIGITAL INFORMATION SIGNAL CAN BE DIVIDED INTO ONE OR MORE SUB-SIGNALS. EACH SUB-SIGNAL IS TRANSMITTED AS A NON-ENCODED SIGNAL. IN WHICH WAY THE SUB-SIGNAL IS TRANSMITTED DEPENDS ON THE COMPRESSION THAT CAN BE ACHIEVED BY THE ENCODER. IF THE COMPRESSION IS LOW THE SUB-SIGNAL IS TRANSMITTED IN NON-ENCODED FORM. FOR THE RECEIVER AN IDENTIFICATION IS ADDED TO THE COMPOSITE SIGNAL TO BE TRANSMITTED. A FIRST COMPONENT OF THE IDENTIFICATION SIGNAL INDICATES IF ONE OR MORE SUB-SIGNALS ARE TRANSMITTED IN ENCODED FORM. A SECOND COMPONENT OF THE IDENTIFICATION SIGNAL INDICATES FOR EACH SUB-SIGNAL WHETHER IT APPEARS IN ENCODED OR NON-ENCODED FORM IN THE COMPOSITE SIGNAL. THE INVENTION PROVIDES A COMPOSITE SIGNAL WITH A MINIMAL NUMBER OF BITS.(FIGURE 1)