Abstract: There is provided a light dimmer module including a liquid crystal layer disposed between a pair of electrodes, and a transmittance sensor that detects light transmittance of the liquid crystal layer.

Abstract: There is provided a light dimmer module including a liquid crystal layer disposed between a pair of electrodes, and a transmittance sensor that detects light transmittance of the liquid crystal layer.

Abstract: A camera device includes: an imaging unit taking image light to obtain a video signal; an output unit outputting the video signal obtained in the imaging unit to a connected cable; a detection unit detecting current variation or voltage variation of the video signal to be outputted from the output unit; and a control unit determining a control signal transmitted through the cable based on the signal variation detected by the detection unit and performing operation control corresponding to the determined control signal.

Abstract: A camera device includes: an imaging unit taking image light to obtain a video signal; an output unit outputting the video signal obtained in the imaging unit to a connected cable; a detection unit detecting current variation or voltage variation of the video signal to be outputted from the output unit; and a control unit determining a control signal transmitted through the cable based on the signal variation detected by the detection unit and performing operation control corresponding to the determined control signal.

Abstract: A camera device includes: an imaging unit taking image light to obtain a video signal; an output unit outputting the video signal obtained in the imaging unit to a connected cable; a detection unit detecting current variation or voltage variation of the video signal to be outputted from the output unit; and a control unit determining a control signal transmitted through the cable based on the signal variation detected by the detection unit and performing operation control corresponding to the determined control signal.

Abstract: A camera device includes: an imaging unit taking image light to obtain a video signal; an output unit outputting the video signal obtained in the imaging unit to a connected cable; a detection unit detecting current variation or voltage variation of the video signal to be outputted from the output unit; and a control unit determining a control signal transmitted through the cable based on the signal variation detected by the detection unit and performing operation control corresponding to the determined control signal.

Abstract: An emitter-coupled multivibrator includes two transistors, a base potential supplying circuit for maintaining the base potential of one transistor which is on at a high potential and the base potential of the other transistor which is off at a low potential, and a base potential control circuit for controlling the base potential of the transistor which is on in accordance with a frequency controlling voltage V.sub.C. A coupling capacitor is charged with a constant current which flows through the transistor which is on, and when the voltage between the base and the emitter of the transistor which is off reaches a predetermined value by charging, the transistor which is off is turned on, while the transistor which is on is turned off. The same operation is repeated so as to alternately turn on and off the transistors for the purpose of oscillating operation.