Chya-Hung Tsai

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Access control system and method based on hierarchical key, and aut...
- Patent number 8,239,928
- Issue date Aug 7, 2012
- Industrial Technology Research Institute
- Yi-Hsiung Huang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Access Control System And Method Based On Hierarchical Key, And Aut...
- Publication number 20100122091
- Publication date May 13, 2010
- Yi-Hsiung Huang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE