In this paper, new physical structure and electrical characteristics of deep trench superjunction power VDMOSFET were introduced comparing with traditional multiple epitaxy process. New deep trench process brought higher IDSS leakage in the wafer center, design and process improvements were implemented to achieve positive results.
Computer notary system is an arbitrator or a notary public in the digital signature system, the process of arbitration, whether the signature is A communication sent to U, or U data are issued to B, after two and a signature encrypted password handling, you can ensure the security of communications. However, there is a signature of the arbitration serious… (More)
Proposed binary watermarking algorithm based on wavelet transform and Scrambling Technology. The carrier image scrambling transformation and wavelet transform, the watermark embedded image Low-frequency coefficients, when embedded in the energy range of different settings according to different embedding strength, and the binary watermark image itself is… (More)
The article studies the process that the double signature in electronic payment system process cannot resist replay attack and gives an improved scheme, and then analyzes the security of the scheme. It is proved to be able to resist the replay Attack after the analysis of the scheme.