Method and apparatus for controlling a remote light source

摘要

A method and apparatus for activating a remote light source in synchronization with an indication provided from a camera. A transducer is coupled to the external electrical connector of a conventional camera in order to convert the electrical signals that are output from the camera into an alternative form (e.g., optical signals). A different transducer is coupled to the external electrical connector of a remote light source, such as a photographic strobe. The light source transducer receives the signal from the camera transducer and converts the signal back into one or more conventional electrical signals to activate the remote light source. A light source activation signal and a light source modulation signal are multiplexed onto a single communication channel. A first indication is provided on the communication channel to activate the remote light source (i.e., cause the light source to emit light). A second indication is preferably provided on the communication channel in response to signals generated by a photo-detector within the camera. The second indication causes the remote light source to modulate its emission of light. The multiplexing camera transducer and demultiplexing light source transducer may be housed within the camera and remote light source, respectively. A Slave remote light source, coupled to a Slave light source transducer is activated by detecting when either a Master remote light source or a local light source has been activated. An open end of an optical conductor that is coupled to a Slave light source transducer is directed in such a way as to be illuminated by the Master remote light source or local light source.