| 摘要 |
PURPOSE: A liquid crystal shutter glasses for watching a caption screen is provided to receive a synchronization signal of the caption screen while outputting screens of a generation image and the caption image, thereby enabling a viewer to view the screens in one image output device at the same time without screen division or screen insertion. CONSTITUTION: A power supply unit supplies driving power to liquid crystal shutter glasses. A control unit(20) drives and controls left/right eye liquid crystals by a synchronization signal transmitted from an image output device. The image output device successively outputs screens of a general image and a caption image and transmits the synchronization signal of the caption image. The liquid crystal shutter glasses are operated by receiving the synchronization signal of the caption image. [Reference numerals] (20) Control unit; (30) Voice output means; (40) Switch button; (AA) Liquid crystal shutter glasses for watching a caption screen; (BB,CC,DD,FF) Caption screen; (EE,GG) Normal screen; (HH) Image output device; (II) Synchronization signal, voice signal |
