Design of Signal Reconstruction and Edition for USB Keyboard

• Main Authors: Chang-Hao Yang, 楊正豪
• Other Authors: Guo-Ming Sung, Ph.D.
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/7aety4

碩士 === 國立臺北科技大學 === 電機工程系所 === 103 === Owing to the market development of computer networks and electronic game, the repeated or Marco key command is not in demand for user. More powerful and reeditable keyboards are popular because it works with a time delay between character and other character, a long string of memories, and the arbitrary usage of the retained key. The object of this thesis is to design the USB interface to complete the reconstruction, edition and analysis of the keyboard outputsignal. That is a dual-port USB 80515 microcontroller and its releated circuit are considered to simulate the button signal that is generated with hardware button. In general, the key signal can not be analyzed in traditional keyboard, but the adopted microcontroller can overcome this problem which is caused by the computer operating system (OS) and software lock key. The reeditability of the microcontroller, which is different from the computer hotkey, is considered to investigate the sensitivity of the keyboard, such as repeated delay and character repetition rate. This research provides a keyboard with more diversity and quickly resolution for repetitive memory key in the daily live. By using the microcontroller, an ordinary keyboard not only performs with high performance but also works with a greatest benefit.