Abstract: The communication apparatus is provided with two different wireless communication methods, namely I/F for LAN and I/F for PAN. The communication quality recognition section recognizes a communication quality in each of two wireless communication methods and the communication interface control section selects the communication method with superior communication quality.

Abstract: Electric power control method for card wireless communication apparatus has interface installable in host unit and processor receiving electric power from host unit and conforms to communication standards where high-order protocol stack including adaptable protocol to emulate serial port communication and low-order protocol stack have been formulated, the electric power control method including starting step of causing the processor to carry out process related to low-order protocol stack in a first mode corresponding to case where the card wireless communication apparatus is installed in host unit high-order protocol stack is implemented in, a decision step of determining whether process related to low-order protocol stack stands idle after starting step, and shift step of bringing the processor into power-saving mode when it has been determined in the decision step that process related to the low-order protocol stack stands idle.

Abstract: This invention relates to an electronic device including a unit which receives a wakeup request for the electronic device in a suspended state, and a frame containing information representing a transmission source device, and a unit which determines whether or not to permit wakeup of the electronic device on the basis of the transmission source information contained in the received frame.

Abstract: A communication control unit determines a wireless communication stop period upon executing intermittent wireless communication, on the basis of the remaining amount detected by a battery remaining amount detection unit, and executes intermittent wireless communication with another apparatus in accordance with the determined wireless communication stop period.

Abstract: A seamless polyimide composite tube which includes a polyimide layer, a conductive primer layer on the surface of the polyimide layer and a fluororesin layer on the surface of the primer layer and a method of manufacturing the composite tube.

Abstract: In a fixing device for heating and melting a toner image and fixing it onto a transfer material, the fixing device has a fixing member surface which comes in contact with a toner image. The fixing member surface has at least a resin and an ion-conductive electrical resistance value controlling material having a melting point higher than a maximum temperature in the fixing device.

Abstract: A torque detecting apparatus for an AC motor is provided which includes a current detecting circuit, an angular position detecting circuit, a torque detecting circuit, and a ripple reducing circuit. The current detecting circuit detects a phase current flowing through each winding of the motor. The torque detecting means determines a torque value indicative of the amount of torque of the AC motor based on the phase currents detected by the current detecting circuit according to an angular position detected by the angular position detecting circuit. The ripple reducing circuit reduces ripple contained in the torque value according to the angular position of the motor for determining an accurate amount of torque of the motor.

Abstract: A seamless polyimide composite tube which includes a polyimide layer, a conductive primer layer on the surface of the polyimide layer and a fluororesin layer on the surface of the primer layer and a method of manufacturing the composite tube.

Abstract: A screw tightening apparatus including an electric screwdriver having a bit shaft adapted to hold a male screw to be threaded to a female hole in a workpiece and a drive mechanism arranged to move the screwdriver toward and away from the mounting hole of the workpiece is disclosed. The screwdriver and drive mechanism are controlled in such a manner that the bit shaft is driven at a low speed and applied with a small thrust force at an initial stage during which the male screw is located to be engaged with the mounting hole. Then the bit shaft is driven at a higher speed than that at the initial stage and applied with a larger thrust force than that at the initial stage during an interim stage when the male screw is threaded into the mounting hole.

Abstract: A screw tightening apparaus of type including an electric screwdriver the bit shaft of which is arranged to carry a male screw engaged therewith to be threaded into a mounting hole of a workpiece and a drive mechanism arranged to move the screwdriver toward and away from the mounting hole of the workpiece, wherein the screwdriver and drive mechanism are controlled in such a manner that the bit shaft is driven at a low speed and applied with a small thrust force at an initial stage during which the male screw is located to be engaged with the mounting hole, that the bit shaft is driven at a higher speed than that at the initial stage and applied with a larger thrust force than that at the initial stage at an interim stage during which the male screw is threaded into the mounting hole and that the bit shaft is driven at a lower speed than that at the initial stage and applied with a larger thrust force than that at the interim stage at a final stage during which the male screw is tightened and seated on the wor