Abstract: A plug used for connection with a USB receptacle. The plug contains a plurality of metal contacts, which is used for contacting metal contacts of the USB receptacle when the plug is connected to the USB receptacle. It also contains a loader, which is used for loading the metal contacts of the plug. The plug has a thickness that is smaller than an ordinary USB plug, so it can be utilized by computer peripherals that have a thickness less than an ordinary USB plug.

Abstract: A touch panel apparatus with optical detection for location has at least one photographic fetching unit and a signal analysis unit. The photographic fetching unit is used to photograph a surface of the panel and a touching object on the panel, and then export a video signal. The analysis unit receives the video signal and analyzes it to obtain a location of the touching object on the panel. The panel can be a liquid crystal panel or a planar screen of a display or a projected plane by a projector.

Abstract: An input system for coordinate and pattern includes a pen and a photographic device affixed on the pen, suitable for use on a panel. The photographic device can photograph the panel by a photographic image region and is coupled to a control unit. According to the image pattern of the photographic image region, an image discerning analysis is performed for detecting the coordinate of the photographic image region. The displacement, speed, handwriting, and direction can also be analyzed out. Moreover, the photographic device can photograph the image pattern, and serve as a scanner when the pen moves. The pen can also touch the panel with at least one setting pattern, and exports a keyboard button signal, so as to simulate a keyboard function. The system can also include at least a detection device and a control button for use in operation.

Abstract: A touch panel display aiding interface performs the operations of a computer pointing device on a touch panel display screen. The touch panel display aiding interface comprises a pointing object, at least a button object and a rolling-action object shown on the touch panel display screen. When the user by means of a pointing member touches the button object on the touch panel display screen, the aiding interface simulates a mouse pressing. When the user touches the rolling-action, the aiding interface simulates a mouse rolling. When the user touches the button object while moving the pointing member, the pointing object moves along with the pointing member.

Abstract: A tool for cracking ice and frost includes an outer tubular member, a T-shaped handle fixedly mounted on an upper end of the outer tubular member, a cylindrical sleeve having an axial through hole and an end formed with a flange, a conical head having a conical portion at one end thereof, a neck portion adjacent to the conical portion and a threaded portion at another end thereof, an inner tubular member being formed an internally threaded portion at one end thereof, an externally threaded portion at another end thereof, and an inner neck portion at an intermediate portion thereof, a striking pin provided with a sharp point at a lower end thereof and a flange at an upper end thereof, a guiding pin formed a cylindrical portion, an enlarged bottom at a lower end thereof, a rod portion having a smaller diameter than said cylindrical portion, and a conical portion between the cylindrical portion and the rod portion, a first helical spring provided with an eccentric lower end and arranged between the inner neck po