| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for expanding and controlling a camera shutter release cable signal by an isolation switch.SOLUTION: Generally, the single short signal of a camera shutter release cable can be expanded via a plurality of isolation switches, for example, a relay or a photo-coupler to composite short signals having satisfactory isolation, satisfactory stability and a sufficient voltage level such that a plurality of cameras connected in parallel can be simultaneously activated, focused and snapped. Further in detail, the cameras connected to the individually, partially or jointly expanded composite short signals are controlled by a computer, universal serial bus (referred to as USB hereinafter) and a central processing unit (referred to as CPU hereinafter) such that the cameras connected in parallel can be simultaneously activated, quickly focused and snapped. Additionally, this device is connected to a plurality of parallel control boards such that much more cameras can be controlled. |
