| 摘要 |
<p>The method involves defining four different luminance and/or color stages, where changes of the luminance and/or color of an operating field represent a clock signal for synchronization, a binary data signal and a serial signal. The represented optical signal (X) is generated by addition of the data signal and clock signals with amplitudes, which are different from one another. The input value is recognized after reading the optical signal by subtracting the clock signals, and is transferred to an optical system (3) as a character code for data input. An independent claim is also included for an arrangement for executing a data input method for a data processing system.</p> |
