Patent ID: 7940821
Filing Date: 2011-05-10
Classification: G11B,H01S

Abstract:
1. A temperature compensating method of laser power in an optical disk storage apparatus comprising: detecting a laser power voltage relative to the input current under mutually different plural temperatures between a maximum temperature and a minimum temperature; obtaining an Equation of input current under each temperature-laser power voltage by way of the laser power voltage thus detected relative to the input current; calculating plural gradients and a y-intercept; performing a linear interpolation of the thus-calculated plural gradients and the y-intercept; obtaining the linear Equation of the gradient of laser power voltage-temperature and the linear Equation of y-intercept of the laser power voltage-temperature by way of the linearly interpolated plural gradients thus calculated and the y-intercept; detecting whether a driving command of the laser diode is inputted; when the driving command of the laser diode is detected, when the driving command of the laser diode is not detected, wherein the linear Equation of the laser power voltage-input current is y=ax+b, where ‘y’ denotes a laser power voltage, ‘a’ denotes a gradient, ‘x’ denotes an input current and ‘b’ denotes a v-intercept.