Patent ID: 8976426
Filing Date: 2015-03-10
Classification: H04N

Abstract:
1. A light source driving circuit configured to drive a light source, the light source driving circuit comprising: a driving electric current generator configured to generate a driving electric current including a predetermined electric current, a first auxiliary driving electric current, and a second auxiliary driving electric current, wherein the predetermined electric current is for obtaining a predetermined light amount from the light source, the first auxiliary driving electric current is applied to the predetermined electric current while being synchronized with a rising edge of the predetermined electric current, and the second auxiliary driving electric current is applied to the predetermined electric current while being synchronized with a falling edge of the predetermined electric current; and a controller configured to set a first value of the first auxiliary driving electric current by using a first lighting pattern signal, and configured to set a second value of the second auxiliary driving electric current by using a second lighting pattern signal, wherein each of the first lighting pattern signal and the second lighting pattern signal is for controlling supply of the predetermined electric current to the light source, wherein, after setting the first value of the first auxiliary driving electric current, the second value of the second auxiliary driving electric current is set by using the second lighting pattern signal that defines a second time period for stopping supply of the predetermined electric current to be shorter than a first time period for stopping the supply of the predetermined electric current that is defined by the first lighting pattern signal.