| 摘要 |
PURPOSE:To perform remote control simultaneously and plurally in one transmission line, by transmitting outputs of plural transmitting circuits that generate individual serial code alternately by a switch. CONSTITUTION:When switches 23, 25 are turned on simultaneously to turn a television camera to upper left obliquely, transmitting circuits 9, 10 generate output, and analog switches 11, 12 are opened and closed alternately by a pulse generator 13. Transmitting output is converted to a light signal through an OR gate 14, a driving circuit 27 and an electricity-light converter and sent out to a light transmission line II. In a receiving section III, it is converted to an electric signal by a photo-electric element 16, amplified by an amplifier 28. The signal converted to a parallel code signal by a receiving circuit 17 is separated by a decoder 18 into a signal for upward turning and an electric signal for turning counterclockwise, and applied to motor driving circuits 21, 22 to drive motors 29, 30 through holding circuits 19, 21 that hold the signals for a specified time. |
