Abstract: A ball mouse includes a ball, two metallic encoder disks each defining a plurality of through holes, two drive rollers engaged with the ball and transferring motion of the ball to respective encoder disks, two electromagnetic signal generators for generating two electromagnetic signals, and two induced signal generators for generating two induced signals according to respective electromagnetic signals. One of the two electromagnetic signals is transmitted to one of the induced signal generators through the plurality of through holes of one of the encoder disks. The other of the two electromagnetic signals is transmitted to the other of the induced signal generators through the plurality of through holes of the other of the encoder disks.

Abstract: An authentication apparatus is for authenticating a fingerprint to power up an electronic device. The authentication apparatus includes a fingerprint sensor, and a power manager. The fingerprint sensor includes a memory for storing predetermined fingerprints, a sampling module for sampling the fingerprint, and an authenticating module for comparing the fingerprint with the predetermined fingerprints to generate an electronic device power-up command. The power manager is for powering up the electronic device according to the electronic device power-up command. An electronic device using the authentication apparatus and an authentication method are also disclosed.

Abstract: An electromagnetic shield is for covering an electronic component on a printed circuit board. The electromagnetic shield includes a frame and a lid. The frame is welded onto the printed board and surrounds the electronic component. The frame defines a slot near the top of the frame. The lid passes through the slot and seals the top of the frame.

Abstract: An electronic device includes a base, a touchpad and a touchpad cover apparatus for covering an operating surface of the touchpad. The touchpad is fastened to a bottom plate of the base. An opening is defined in the shell for revealing the operating surface of the touchpad. The touchpad cover apparatus includes a rail guide extending from a bottom surface of the shell and a touchpad cover. A pair of parallel guiding channels is defined in the rail guide. The touchpad cover is slidably inserted between the pair of parallel guiding channels, being slidable between a first position such that the operating surface of the touchpad is revealed through the opening of the shell, and a second position such that an operating surface of the touchpad is covered by the touchpad cover.

Abstract: A positioning device includes an antenna, a receiving module, a processing module and an output module. The receiving module receives positioning signals transmitted from positioning satellites and a position signal of another positioning device transmitted from a ground monitoring system using the antenna. The processing module determines a position of the positioning device according to the positioning signals, and calculates a distance between the positioning device and another positioning device according to the position signal of the position device and the position signal of the another positioning device. The output module outputs the distance. A method for measuring the distance between the positioning devices is also provided.

Abstract: An electronic device includes a main body and a cover pivotally assembled on the main body, wherein when the cover rotates relative to the main body, the electronic device is automatically powered on.

Abstract: The present invention relates to a computer system and a monitor with peripheral interfaces. The computer system includes a monitor, a host, and a transmission cable. The monitor includes a plurality of peripheral interfaces and an integrated interface. The peripheral interfaces are utilized to connect corresponding peripheral devices, and the peripheral interfaces are connected with the integrated interface. The transmission cable is configured for connecting the integrated interface and the host, and transmitting peripheral signals from the peripheral devices to the host.

Abstract: A positioning device includes an antenna, a receiving module, a processing module and an output module. The receiving module receives positioning signals transmitted by positioning satellites and a position signal of another positioning device using the antenna. The processing module determines a position of the positioning device according to the positioning signals, and calculates a distance between the positioning device and another positioning device according to the position signal of the position device and the position signal of the other positioning device. The output module outputs the distance. A method for measuring the distance between the positioning devices is also provided.

Abstract: A pad for soldering a contact of a surface mounted component is provided herein. The pad includes a central portion and a plurality of separate extending portions extending from the central portion. All of the plurality of separate extending portions includes a free end and a connected end connected to the central portion. A width of the free end is larger than a width of the connected end. A circuit board and an electronic device are also provided.

Abstract: A computer housing is provided. The computer housing includes a front panel with an opening formed thereon. A cable winding assembly is disposed within the computer housing and includes a stop member, a cable winding member, two support members, and an elastic rope. The cable winding member includes a jack receiving hole and at least one stop member receiving means formed on an outer circumferential surface thereof for accommodating a headphone jack and the stop member respectively. The stop member can be inserted through the opening. The two support members are attached to a bottom panel of the computer housing and include bearing holes formed threreon for supporting the cable winding member and allowing a rotation of the cable winding member. The elastic rope includes two ends fastened respectively to the cable winding member and one of the support members and is capable of being wound when the cable winding member rotates.

Abstract: An electromagnetic shield is configured for blocking electromagnetic waves in a mobile communication device. The electromagnetic shield includes an organic glass layer and an indium tin oxide layer. The organic glass layer is configured for providing main body of the electromagnetic shield. The indium tin oxide layer is plated on the organic glass layer for blocking the electromagnetic waves.

Abstract: A battery overheating protection device used in an electronic device is provided. The electronic device includes a main unit configured to implement basic functions of the electronic device and a battery unit configured to supply power to the main unit. The battery overheating protection device includes a temperature monitoring unit, a switch unit and a processing unit. The temperature monitoring unit is configured to store a predetermined temperature value, measure a temperature value of the battery unit and output a signal when the detected temperature value is greater than the predetermined temperature value. The temperature monitoring unit includes at least one thermistor thermally connected to the battery unit. The switch unit is connected between the main unit and the battery unit. The processing unit is configured to receive the signal and open the switch unit when receiving the signal, thereby the battery unit is disconnected from the main unit.

Abstract: A multifunction mobile phone includes an accelerometer, a selection module, and a processor. The accelerometer detects a movement of the multifunction mobile phone, and generates acceleration signals in response to the movement. The selection module selects components of the acceleration signals in response to a selection signal. The processor receives the acceleration signals when no selection signal is inputted to the selection module, so as to control the multifunction mobile phone itself. The processor receives at least part of the acceleration signals through the selection module in response to the selection signal, so as to control the electronic device.

Abstract: A method for determining a distance between positioning devices includes following steps. A ground monitoring system receiving positions of a first positioning device and a second positioning device. The ground monitoring system determining a distance between the first positioning device and the second positioning device according to the positions of the first positioning device and the second positioning device. The ground monitoring system transmitting said distance to at least one of the first positioning device and the second positioning device.

Abstract: An exemplary input device includes a key. The key includes a first conductive film, a second conductive film, a light source, a photoelectric transformer, and a liquid crystal layer. The second conductive film is configured for cooperating with the first conductive film to generate a first electric field having a first predetermined intensity when the key is pressed. The light source is configured for emitting light. The photoelectric transformer is configured for generating a first electric signal when receiving the light from the light source. The liquid crystal layer is configured for transmitting the light to the photoelectric transformer under influence of the first electric field. A related electronic device is also provided.

Abstract: An electronic device includes a main body and a cover pivotally assembled on the main body, wherein when the cover rotates relative to the main body, the electronic device is automatically powered on.

Abstract: A ball mouse includes a ball, two metallic encoder disks each defining a plurality of through holes, two drive rollers engaged with the ball and transferring motion of the ball to respective encoder disks, two electromagnetic signal generators for generating two electromagnetic signals, and two induced signal generators for generating two induced signals according to respective electromagnetic signals. One of the two electromagnetic signals is transmitted to one of the induced signal generators through the plurality of through holes of one of the encoder disks. The other of the two electromagnetic signals is transmitted to the other of the induced signal generators through the plurality of through holes of the other of the encoder disks.

Abstract: An exemplary vehicle management system for arranging vehicle repair service includes a management center and a vehicle. The management center includes a center processor associated with a center transceiver and a center database. The vehicle includes a vehicle processor associated with a GPS receiver and a vehicle transceiver. The GPS receiver receives satellite signals to be processed by the vehicle processor to generate corresponding position data of the vehicle. When the vehicle is determined to need repair service, the vehicle processor signals the vehicle transceiver to transmit the position data to the center transceiver of the management center. The center processor selects a repair station for providing vehicle repair service based on a criterion including the position data of the vehicle and the position data of the repair stations.

Abstract: A connector includes a plug and a port. The port defines a notch and a groove in an inner surface of the port. The groove extends in the inner surface along a circumferential direction. The notch extends from an opening in the port and communicates with the groove. The plug forms a protrusion in an outer surface of the plug. The protrusion is capable of sliding along the notch and in the groove, and rotating along the groove in the circumferential direction to be received in the groove. A related port of the connector is also provided.