Abstract: The present invention relates to a device for generating a signal and method for controlling operation of the same. The present invention provides a device for generating a signal, which includes an electrode, if connected to an external power source, supplied with a voltage from the external power source, a signal generating unit having a plurality of terminals, the signal generating unit deciding whether to operate the device according to a size of a voltage applied to a first terminal among a plurality of the terminals, the signal generating unit outputting a prescribed signal according to the decision, and a control circuit, if the electrode is connected to a plurality of the terminals, controlling a voltage applied to a plurality of the terminals. Accordingly, the present invention is able to control whether to operate a signal generating device using an external power source.

Abstract: The present invention provides a method and system for processing visual images of a digestive system. The method comprises: detecting visual images of a digestive system; storing the detected visual images; analyzing the stored visual images to identify corresponding event frames; and displaying the identified event frames quantitatively with respect to at least one reference. With the method and system, visual images of a digestive system can be processed more accurately, efficiently and conveniently for diagnostic purposes.

Abstract: The present invention relates to a device for generating a signal and method for controlling operation of the same. The present invention provides a device for generating a signal, which includes an electrode (110), if connected to an external power source (200), supplied with a voltage from the external power source (200), a signal generating unit (130) having a plurality of terminals, the signal generating unit (130) deciding whether to operate the device according to a size of a voltage applied to a first terminal among a plurality of the terminals, the signal generating unit (130) outputting a prescribed signal according to the decision, and a control circuit (120), if the electrode (110) is connected to a plurality of the terminals, controlling a voltage applied to a plurality of the terminals. Accordingly, the present invention is able to control whether to operate a signal generating device (100) using an external power source (200).