Patent ID: 7643084
Filing Date: 2010-01-05
Classification: H04N

Abstract:
1. A lighting control apparatus of a photographing apparatus, comprising: a lighting device that illuminates a photographic subject by receiving one of a sine wave signal and a half-wave rectification wave signal, in the exposure time; and a signal supplying processor that supplies one of said sine wave signal and said half-wave rectification wave signal, to be received by said lighting device, to said lighting device in said exposure time, wherein said sine wave signal is composed of a first half sine wave and a second half sine wave, which are connected; said half-wave rectification wave signal is composed of a third half sine wave and an off-state signal, which are connected; said first half sine wave is a wave form corresponding to the on state of a rectangular wave signal and has the high-frequency component removed, so that only the primary component remains; said second half sine wave is a wave form corresponding to the off state of said rectangular wave signal and has the high-frequency component removed, so that only the primary component remains; and said third half sine wave is a wave whose amplitude is two times that of said first half sine wave.