Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Design and Realization of a New Signal Security System for Multimedia Data Transmission | EURASIP Journal onApplied Signal Processing 2003 13 1291-1305 2003 Hindawi Publishing Corporation Design and Realization of a New Signal Security System for Multimedia Data Transmission Hun-Chen Chen Department of Electronics Engineering National United University Miaoli 360 Taiwan Email hcchen@ Jiun-In Guo Department of Computer Science and Information Engineering National Chung Cheng University Chia-Yi 621 Taiwan Email jiguo@ Lin-Chieh Huang Department of Computer Science and Information Engineering National Chung Cheng University Chia-Yi 621 Taiwan Email hlc91@ Jui-Cheng Yen Department of Electronics Engineering National United University Miaoli 360 Taiwan Email jcyen@ Received 22 January 2003 and in revised form 25 August 2003 We propose a new signal security system and its VLSI architecture for real-time multimedia data transmission applications. We first define two bit-circulation functions for one-dimensional binary array transformation. Then we exploit a chaotic system in generating a binary sequence to control the bit-circulation functions defined for performing the successive transformation on the input data. Each eight 8-bit data elements is regarded as a set and is fed into an 8 X 8 binary matrix being transformed on each row and each column of the matrix by these two bit-circulation functions such that the signal can be transformed into completely disordered data. The features of the proposed design include low computational complexity regular operations suitable for lowcost VLSI implementation high data security and high feasibility for easy integration with commercial multimedia storage and transmission applications. We have performed Matlab simulation to verify the functional correctness of the proposed system. In implementing the system a low-cost VLSI architecture has been designed verified and physically realized based on a pm CMOS technology. The implementation results show that the proposed .
