Patent ID: 7899099
Filing Date: 2011-03-01
Classification: G11B,H01S

Abstract:
1. A laser drive circuit comprising: a plurality of input channels configured to receive digital input channel signals; at least one digital-to-analog converter, each input channel being assigned to at least one digital-to-analog converter, each digital-to-analog converter having a current input, a current output, and a digital data input, the digital-to-analog converter being configured to output an output current at the current output to amplify an input current at the current input by a current amplification as analog amplification, the digital-to-analog converter configured to convert a digital input value at the digital data input in the current amplification; and a switching amplifier device, each input channel being connected to a switch input of the switching amplifier device, at least one analog switch, wherein a current input of the at least one digital-to-analog converter is connected to the at least one analog switch wherein the current output of each digital-to-analog converter is connected to a current input of the switching amplifier device, and wherein the switching amplifier device is configured to switch each output current of each digital-to-analog converter according to the input channel signal of the associated input channel, to sum it, and to output it amplified to at least one output of the switching amplifier device.