Methods and characteristics of videodata unequal protection based on uniform convolutional codes

Well-known methods of unequal protection of information symbols from errors are implemented based on signal-code structures using multi-phase and multi-level modulation methods and group codes with different correcting capacity on the appropriate levels of signal set segmentation or with segmentation of transferred information into flows of significant and non-significant information symbols. Significant information symbols are encoded by cascade code based on cyclic Hamming codes, BCH-codes and convolution code with code symbols perforation capacity. Disadvantages of these unequal protection methods of information symbols are the high excessiveness of the transferred information r ≥ 60% and relatively low reliability of significant information symbols transfer.