Infrared transmission codes for wireless keyboard and PC remote controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 6, 2004
Grant Date -
N/A
app pub date -
Jul 31, 2000
filing date -
Jul 31, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an infrared transmission protocol and more particularly to an infrared transmission protocol for wireless keyboard and PC remote controller. The transmission codes are grouped into four parts--key codes for keyboard, button codes for remote controller, mouse codes for keyboard, and mouse codes for remote controller. Key codes for keyboard are used to identify the MAKE and BREAK of keys on wireless keyboard. Button codes for remote controller are used to identify the MAKE and BREAK of buttons on PC remote controller. Mouse codes for keyboard and remote controller are defined separately. They are used to identify action of pointing devices on wireless keyboard and PC remote controller. Transmission codes are encoded into the RS232 format and transmitted through infrared wave at the baud rate of 1200. Each key packet for keyboard consists of two data-units. Each mouse packet for keyboard and each button and mouse packet for PC remote controller consist of three data-units. Each data-unit contains total ten bits of information--one start bit, seven data bits, one parity nit and one stop bit.
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