Abstract: An apparatus and a method for locking and removing a pen using electromagnetism are provided. The apparatus includes a pen housing, a DC source, a coil, a first magnetic element attached to the pen, a second magnetic element and a switch. In some embodiments, a third magnetic element is included. To remove the pen from the pen housing, a user activates a button to magnetize one of the magnetic elements to mutually repel the other. Consequently, the pen is displaced by the repulsion of either the pen from its housing or the pen housing carrying the pen. The pen thus has a protruding end which the user grips to remove the pen from the housing. To lock the pen, the pen is inserted into the housing to be mutually attracted with a magnetic element to be retracted to a locked position.

Abstract: A computing device having a casing, a printed circuit board (PCB) and a card receptacle moveably supported by the casing for covering an orifice in the casing is disclosed. The card receptacle is spaced apart from the PCB in a closed position of the card receptacle to define a cavity therebetween. The card receptacle supports a connector that is connected to an electronic circuitry on the PCB. The card receptacle can be moved to at least one open position away from the orifice for receiving an electronic card and for allowing an additional module of the computing device to be inserted into the cavity for connection to the PCB.

Abstract: An apparatus and a method for locking and removing a pen using electromagnetism are provided. The apparatus includes a pen housing, a DC source, a coil, a first magnetic element attached to the pen, a second magnetic element and a switch. In some embodiments, a third magnetic element is included. To remove the pen from the pen housing, a user activates a button to magnetize one of the magnetic elements to mutually repel the other. Consequently, the pen is displaced by the repulsion of either the pen from its housing or the pen housing carrying the pen. The pen thus has a protruding end which the user grips to remove the pen from the housing. To lock the pen, the pen is inserted into the housing to be mutually attracted with a magnetic element to be retracted to a locked position.

Abstract: A computing device having a casing, a printed circuit board (PCB) and a card receptacle moveably supported by the casing for covering an orifice in the casing is disclosed. The card receptacle is spaced apart from the PCB in a closed position of the card receptacle to define a cavity therebetween. The card receptacle supports a connector that is connected to an electronic circuitry on the PCB. The card receptacle can be moved to at least one open position away from the orifice for receiving an electronic card and for allowing an additional module of the computing device to be inserted into the cavity for connection to the PCB.

Abstract: An antenna is provided that is adapted to operate in multiple frequency bands. The antenna consists of a first antenna element for receiving and transmitting signals in a first frequency band, and a second antenna element for receiving and transmitting signals in a second frequency band. The first antenna element has a substantially elongated conductor of a predetermined first pitch, which is coupled to a feed point. The second antenna element has a substantially meandering coil of a predetermined second pitch, which is coupled to said feed point. The substantially meandering coil comprises a plurality of first portions having a wound form and surrounding at least partly said first antenna element, and also comprises a plurality of second portions having a straight form. The first portion extends from an upper end of said second portion to a lower end of a subsequent second portion following in axial direction of the second antenna element.