公开(公告)号：US4106865A

公开(公告)日：1978-08-15

申请号：US829816

申请日：1977-09-01

申请人： Norbert Burgermann

发明人： Norbert Burgermann

IPC分类号： G03B19/26 ,  G03B21/36

CPC分类号： G03B19/26

摘要： The light-sensitive negative-feedback diaphragm control system of the motion-picture camera includes a stepper-motor coupled to the diaphragm, and a control circuit generating stepper-motor drive pulses. The control circuit includes an oscillator having a time-constant circuit which establishes the repetition frequency of the drive pulses. m different repetition frequencies can be established for the drive pulses, using m semiconductor switches each connected to the time-constant circuit. A program-step counter counts program-step-change signals generated during film transport, and a "1" signal appears on successive ones of the counter outputs. The outputs include, in succession, a fade-out output group, a rewind output group, and a fade-in output group. Each such output group contains m outputs. Logic circuitry connected to the outputs of the program-step counter imbalances the diaphragm control system and controls the film transport motor, to effect fade-out, then rewind, then fade-in in dependence upon the program-step count. The first through mth semiconductor switches are each connected to the first through mth outputs of the fade-out output group, respectively, and to the mth through first outputs of the fade-in output group, respectively. Accordingly, during fade-out, the repetition frequency of the drive pulses is progressively increased, and during fade-in decreased.

摘要翻译： 运动图像摄像机的感光负反馈光圈控制系统包括耦合到光圈的步进电机和产生步进电机驱动脉冲的控制电路。 控制电路包括具有建立驱动脉冲的重复频率的时间常数电路的振荡器。 可以使用各自连接到时间常数电路的m个半导体开关来为驱动脉冲建立不同的重复频率。 程序步数计数器计数在胶片传送期间产生的程序改变信号，并且在连续的计数器输出上出现“1”信号。 输出依次包括淡出输出组，倒带输出组和淡入输出组。 每个这样的输出组包含m个输出。 连接到程序步数计数器的输出的逻辑电路使隔膜控制系统不平衡，并控制胶片传输电机，实现淡出，然后倒带，然后根据程序步数计数淡入。 第一至第m个半导体开关分别分别连接到淡出输出组的第一至第m个输出，分别连接到淡入输出组的第m个至第一个输出。 因此，在淡出期间，驱动脉冲的重复频率逐渐增加，并且在渐弱期间减少。

公开(公告)号：US4378148A

公开(公告)日：1983-03-29

申请号：US294166

申请日：1981-08-19

申请人： Norbert Burgermann ,  Alois Rieder ,  Horst Rossbach

发明人： Norbert Burgermann ,  Alois Rieder ,  Horst Rossbach

IPC分类号： G03B1/22 ,  G03B9/10 ,  G03B21/44 ,  G03B1/18 ,  G03B21/38

CPC分类号： G03B1/22 ,  G03B21/44 ,  G03B9/10

摘要： A motion picture apparatus and preferably a motion picture projector. A rotary disc shutter is actuated by an electric drive and comprises a shutter sector. A claw mechanism controlled by the electric drive provides for transport of a film and the motion of the film is controlled by a solenoid having associated a solenoid plunger suitable for disengaging the claw transport mechanism after a frame transport phase. A position pulse generator provides a shutter position pulse depending on the position of the shutter sector. An output memory element connected to the electromagnet solenoid controls the energization of the electromagnet and in turn is connected to a switch and to the position pulse generator. Preferably additional memories are provided for performing functions such as controlling the advance and the reverse motion or providing for a timer or individual frame operation.

摘要翻译： 一种运动画面装置，优选地是电影放映机。 旋转盘快门由电驱动器驱动并且包括快门扇区。 由电驱动器控制的爪机构提供了胶片的传送，并且胶片的运动通过螺线管来控制，该螺线管具有一个螺线管柱塞，螺线管柱塞适用于在帧输送阶段之后分离爪传送机构。 位置脉冲发生器根据快门扇区的位置提供快门位置脉冲。 连接到电磁铁螺线管的输出存储元件控制电磁铁的通电，并连接到开关和位置脉冲发生器。 优选地，提供附加存储器用于执行诸如控制提前和反向运动或提供定时器或单独帧操作的功能。

公开(公告)号：US4106864A

公开(公告)日：1978-08-15

申请号：US827776

申请日：1977-08-25

申请人： Norbert Burgermann

发明人： Norbert Burgermann

IPC分类号： G03B7/08 ,  G03B7/085 ,  G03B19/26 ,  G03B21/36

CPC分类号： G03B7/085 ,  G03B19/26 ,  G03B7/0807

摘要： The user selects a fadeover duration by selecting the number of pulses in a reference pulse packet registered by a reference counter. During film transport in either direction, a frame-pulse counter counts up a number of frame pulses equal to the number of pulses in the reference pulse packet, and then performs another frame-pulse counting cycle. Each frame-pulse counting cycle advances a program-step counter. Logic circuitry is responsive to the count on the program-step counter and, during the successive program steps, causes fade-out, film-rewind, and fade-in operations to be performed. The adjusting motor for the diaphragm operates at a speed inversely related to the number of pulses in the reference pulse packet, and the amount by which the adjusting motor changes the diaphragm setting during each frame-pulse counting cycle is always the same.

摘要翻译： 用户通过选择由参考计数器登记的参考脉冲分组中的脉冲数来选择衰落持续时间。 在每个方向的胶片传送期间，帧脉冲计数器对等于参考脉冲包中的脉冲数的帧脉冲数进行计数，然后执行另一个帧脉冲计数周期。 每个帧脉冲计数周期推进一个程序步数计数器。 逻辑电路响应于程序步数计数器上的计数，并且在连续的程序步骤期间，导致执行淡出，电影快退和淡入淡出操作。 用于隔膜的调节电机以与参考脉冲包中的脉冲数成反比的速度运行，并且在每个帧脉冲计数周期期间调节电动机改变膜片设置的量总是相同的。