In view of the limitation of signal dotting and phonetic communication device used for coal mine,a kind of flameproof signal dotting and phonetic carrier-current communication device especially suited to satisfy the current needs of modernization mine production with high-capacity and high-efficiency is designed,its effects and performance has been validated.

Research on Information Supervision and the Speech Communication System in Specialize Train;

This paper puts forward an interest management method fitting for voice communication in distributed virtual environment(DVE),using the publish-subscribe pattern in the distributed event system by reference.

The Design of Encryption Chip Based on Permutation Code and Its Research on Voice Communication;