Abstract: A portable antenna control device includes: a main controller for generating a control signal for adjusting a device provided in an antenna; a modem unit for converting the control signal generated by the main controller into an on-off keying (OOK) signal; a power management unit for supplying direct current power; and an OOK port for synthesizing and outputting the OOK signal converted by the modem unit and the direct current power supplied by the power management unit.

Abstract: A portable antenna control device includes: a main controller for generating a control signal for adjusting a device provided in an antenna; a modem unit for converting the control signal generated by the main controller into an on-off keying (OOK) signal; a power management unit for supplying direct current power; and an OOK port for synthesizing and outputting the OOK signal converted by the modem unit and the direct current power supplied by the power management unit.

Abstract: A portable antenna control device includes: a main controller for generating a control signal for adjusting a device provided in an antenna; a modem unit for converting the control signal generated by the main controller into an on-off keying (OOK) signal; a power management unit for supplying direct current power; and an OOK port for synthesizing and outputting the OOK signal converted by the modem unit and the direct current power supplied by the power management unit.

Abstract: A portable antenna control device includes: a main controller for generating a control signal for adjusting a device provided in an antenna; a modem unit for converting the control signal generated by the main controller into an on-off keying (OOK) signal; a power management unit for supplying direct current power; and an OOK port for synthesizing and outputting the OOK signal converted by the modem unit and the direct current power supplied by the power management unit.

Abstract: An intersection navigation system for a hoist to prevent a hoist unit of the hoist from falling when the hoist unit passes an intersection may include a hoist unit including an auxiliary mover and a railway on which the hoist unit travels. The railway may include an intersection having auxiliary rails on which the auxiliary mover moves. Furthermore, the auxiliary mover may be configured to prevent the hoist unit from falling when the hoist unit passes through the intersection.

Abstract: A hoist apparatus includes a traveling portion disposed to travel along a transfer path, a rotation portion installed at the traveling portion to rotate with respect to the traveling portion, an ascending and descending portion to ascend or descend with respect to the rotation portion and for loading an object, and an object support member installed at the traveling portion, having an accommodation space to accommodate the object, and including at least one object support portion disposed at one side of the object support member and having a shape corresponding to the object so as to support the object rotated by the rotation portion.

Abstract: Disclosed herein is an intersection navigation system for a hoist to prevent a hoist unit of the hoist from falling when the hoist unit passes an intersection. The intersection navigation system may include a hoist unit including an auxiliary mover and a railway on which the hoist unit travels. The railway may include an intersection having auxiliary rails on which the auxiliary mover moves. Furthermore, the auxiliary mover may be configured to prevent the hoist unit from falling when the hoist unit passes through the intersection.

Abstract: A fuel filter sealing apparatus to improve a connector for connecting a fuel input pipe and a fuel return pipe to a fuel filter in order to prevent fuel leakage during a preliminary testing stage of an engine and backflow of fuel during engine operation. An oil chamber is provided between a first piston and a second piston accommodated at an inner circumferential side of a fuel filter side connecting part. Fuel flow holes are radially formed at an external side of the oil chamber and inlets thereof are opened and closed by the first piston to allow the fuel passing through outlets thereof to flow to the fuel filter. A barrier valve is provided at one side with a valve surface for opening and closing a fuel through hole disposed between the fuel filter and the connector.

Abstract: A fuel filter sealing apparatus to improve a connector for connecting a fuel input pipe and a fuel return pipe to a fuel filter in order to prevent fuel leakage during a preliminary testing stage of an engine and backflow of fuel during engine operation. An oil chamber is provided between a first piston and a second piston accommodated at an inner circumferential side of a fuel filter side connecting part. Fuel flow holes are radially formed at an external side of the oil chamber and inlets thereof are opened and closed by the first piston to allow the fuel passing through outlets thereof to flow to the fuel filter. A barrier valve is provided at one side with a valve surface for opening and closing fuel through holes disposed between the fuel filter and the connector.

Abstract: A circuit and method which provides the simultaneous transmission of page data in a paging system by delaying a reference clock signal from a global positioning system.