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    • 1. 发明授权
    • Film projector with sound playback or recording
    • 电影放映机带声音播放或录音
    • US4200363A
    • 1980-04-29
    • US968467
    • 1978-12-11
    • Robert A. Olodort
    • Robert A. Olodort
    • G03B41/08G03B31/02
    • G03B41/08
    • A motion picture film projector includes a sound head for playing back or for recording a sound track on the film. Absolute synchronism between the picture and sound is assured by the use of a single motor and common shaft to move the film past the sound head and to rotate the optical rectification system. In one embodiment, the sound head is mounted on the concave side of a stationary arcuate film guide opposite the sound track, and the film is driven past the sound head by a sprocket wheel mounted on the common shaft adjacent the optical rectification system.
    • 电影胶片投影机包括用于在电影上回放或用于记录声轨的声音头。 图像和声音之间的绝对同步通过使用单个电机和公共轴来移动胶片通过声音头并使光学整流系统旋转得到保证。 在一个实施例中,声头安装在与声轨相对的固定弓形胶片导板的凹面上,并且胶片通过安装在邻近光学矫正系统的公共轴上的链轮驱动通过声音头。