| 摘要 |
PROBLEM TO BE SOLVED: To provide an encoder system with real time LED current adjustment.SOLUTION: An LED current adjuster can adjust LED current of an encoder system. The LED current adjuster can include a first analog multiplier and a second analog multiplier. Each of the first analog multiplier and the second analog multiplier can be constituted so as to receive optical sensor output signals to be characterized by Vpp which is peak to peak voltage, respectively, and to generate a first multiplier output signal and a second multiplier output signal, respectively. The first and second multiplier output signals can be coupled to each other to generate a first DC level capable of representing the Vpp which is the peak to peak voltage of the optical sensor output signals. |
