Abstract: According to one aspect, an optical recording and/or reproducing device for reading and/or writing an optical disc includes a base, optical pickup head, and a moving mechanism for slidably moving the optical pickup head. The moving mechanism includes a worm gear, a motor for rotating the worm gear, and a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, an engaging portion for engaging with the worm gear, a restricting portion connected to the engaging portion for preventing the engaging portion from running out of the worm gear, and a connecting portion for connecting the fastening portion with the restricting portion.

Abstract: A slot antenna is located on a substrate and includes a grounding portion, a radiating portion, and a feeding portion. The grounding portion is positioned on the substrate. The radiating portion is symmetrically octagonal-shaped and defines four trapezoidal-shaped slots on opposite sides. The radiating portion is parallel to the grounding portion. The feeding portion electrically connects the radiating portion to the grounding portion for feeding electromagnetic signals to the slot antenna.

Abstract: A fastener comprises a fastener post, a clasping element and an elastic element. The fastener post comprises a head, a post body and a threaded portion. The post body has a first extension section connecting with the head, a second extension section connecting with the threaded portion and a recess section connected between the first and second extension sections. The clasping element comprises an annular clasping body, a first clasping portion axially extending from the clasping body and a second clasping portion extending outwardly and then downwardly from the clasping body. The clasping body encloses the post body, the first clasping portion engages with the recess section of the post body, and the second clasping portion engages with the heat sink. The elastic element is set around the post body and located between the head and the clasping body.

Abstract: An LED lamp includes a plurality of barrel-type holders and a plurality of LED modules mounted on an outer surface of each of the barrel-type holders. Each of the barrel-type holders has a small opening end and a large opening end opposite to the small opening end. The barrel-type holders are coaxial with each other, with a larger barrel-type holder enclosing a smaller barrel-type holder. The small opening ends of the barrel-type holders face downwardly, while the large opening ends face upwardly.

Abstract: An LED includes a bowl-like substrate, three posts embedded within the substrate, an LED die bonded to a middle post, a pair of spiral gold wires interconnecting two electrodes of the LED die and two lateral posts, and an encapsulant sealing the LED die and fixed on the substrate. The two wires are further wound around two columns protruded upwardly from the substrate, respectively. The two columns may be made integrally with the substrate, or be employed as upper portions of the two lateral posts in the case of the two lateral posts extending upwardly beyond the substrate.

Abstract: A method for acquiring location information of a communication device is disclosed. The method acquires the location information of a first communication device according to a request received from a second communication device, and then transmitting the location information of the first communication device to the second communication device A system for acquiring location information of a communication device is also provided. By utilizing the method and the system, another people may find a location of a user of the first communication device.

Abstract: An exemplary charging control circuit includes a signal shaping unit, a first switch unit, and a second switch unit. The signal shaping unit receives a control signal, and is capable of reshaping the received control signal to have a time interval transited from a first state to a second state. The first switch unit receives the shaped control signal, and generates a first switching signal. The second switch unit receives the first switching signal, and is capable of being turned on based on the first switching signal for allowing electrical power to be outputted to a battery.

Abstract: A heat dissipation device is provided for dissipating heat generated by electronic components mounted on a printed circuit board in an electronic system. The electronic components have different heights. The heat dissipation device includes a connecting plate, at least two elastic members mounted on the connecting plate, and a heat sink having a substrate mounted on the connecting plate and located above one of the electronic components. A number of joining members extend through the printed circuit board and engage with the substrate to attach the substrate on the one electronic component on the printed circuit board. A distance between the substrate and the connecting plate is adjustable by adjusting the joining members to make the substrate intimately contact the one electronic component.

Abstract: An electronic device includes a housing defining a through hole, a circuit board fixed in the housing, including a switch and a grounding portion connecting with the ground, a fastening member received in the through hole fixed on the housing and contacting the grounding portion, passing static electricity therethrough and defining a mounting hole, and an actuating member received in the mounting hole and contacting the fastening member, and pressing the switch when actuated; wherein the fastening member and the actuating member are conductive.

Abstract: A system for controlling multiple light sources is provided. The system includes a controller, a digital to analog converter (DAC), and at least one power amplifier. The controller is configured for receiving light control data for at least one light circuit, and for determining a digital luminance signal and an encoded address for each light circuit according to the light control data. The DAC is connected to the controller and configured for receiving the digital luminance signal and the encoded address for each light circuit, converting the digital luminance signal into an analog luminance signal, and for outputting the analog luminance signal according to the encoded address. Each power amplifier is connected to the DAC, and is configured for amplifying the analog luminance signal for the light circuit so as to drive the light circuit to control a corresponding light source.

Abstract: A mobile terminal device detects current communication environment status of the device and calculates a value of a radio quality index (RQI), and adjusts the roaming threshold according to the value of the RQI. The device further calculates a value of a user movement index (UMI) and adjusts the frequency of the device for scanning object access points. After determining the object access point that has satisfied a roaming threshold, the device ends the communication between the device and the current access point, and establishes a communication between the device and the object access point.

Abstract: An electric assembly includes a heat sink defining a through hole and a notch communicating with the through hole; a circuit board defining a fixing hole; and a fastening assembly. The fastening assembly includes a fastener comprising a stem, a head connected one end of the stem, and a clamp connected to an opposite end of the stem; a limiting member comprising a main body slideably disposed on the stem and a limiting portion extending from the main body, the main body received into the through hole, and the limiting portion engageably inserted into the notch; and an elastic member disposed around the stem and between the head and the main body. Wherein the limiting portion is capable of sliding out of the notch and against the heat sink to compress the elastic member.

Abstract: An LED lamp includes a heat dissipation part, an optical part and an electric part. The optical part includes an LED module attached to a heat dissipation member of the heat dissipation part and an envelope covering the LED module. The electric part includes a casing, a circuit board and a lamp cap. The casing includes a bottom plate and an annular sidewall extending from a periphery of the bottom plate to connect with the heat dissipation part and the optical part. The lamp cap includes an electric shell and an electric pole axially inserted in the electric shell. The lamp cap is rotatablely connected to the casing via the electric pole. The electric pole is fixedly connected to and electrically insulated from the electric shell. An orientation-adjusting structure is provided between the casing and the lamp cap for adjusting the illumination direction of the LED lamp.

Abstract: A heat dissipation device for dissipating heat from an electronic component mounted on a printed circuit board, includes a fin unit, a centrifugal fan located adjacent to the fin unit, a heat-conducting board attached to the electronic component and a heat pipe thermally connecting the fin unit and the electronic component. An engaging portion protrudes upwardly from a top face of the heat-conducting board. The heat pipe has an evaporating section extending through the engaging portion and being fixed to the top face of the heat-conducting board, and a condensing section attached to the fin unit.

Abstract: An electronic device comprises a main body comprising an inner surface and a sidewall defining a first through hole. A connector receives an electronic card, and comprising a support portion fixed to the inner surface of the main body. An axle is rotatably connected to the support portion. Two ends of each of the two torsion springs are fixed to the axle and the support portion respectively. A salver is located below the axle, and is slidably connected to the support portion. The salver comprises a spring tab for limiting the electronic card to slide. A groove member is located on the salver, and is connected to the support portion. The groove member comprises a main body and two extending portions. The main body limits the salver to slide. A resuming device is set inside of the main body.

Abstract: An exemplary lid lock mechanism (20) includes a main body (22) and a lid (24). Two resilient hooks (222) and two resisting portions (224) are formed on an inner surface of the main body. The lid includes a lid cap (242). Two hooking portions (246) and two extending pieces (248) are formed on a surface (244) of the lid cap. The hooking portions are engaged with the resilient hooks of the main body when the lid is connected to the main body. To detach the lid from the main body, the hooks of the hooking portions are disengaged from the resilient hooks of the main body.

Abstract: An exemplary electronic apparatus (100) includes a main body (10), a lid (20) connecting with and rotating with respect to the main body between an opened position and a closed position, and a sliding bar (35) located in the main body. The main body defines a fastening hole (137), and includes a block portion (132) extending upwardly from an outer edge of the fastening hole. The block portion includes a side block portion (131) and a top block portion (134) connecting with the side block portion. The lid includes a hook (31) aligning with the fastening hole. The sliding bar includes a main bar (351) movably fastened onto the main body, a limiting portion (353) extending from the main bar, and a hook portion (357) extending from the limiting portion for fastening onto the hook. The limiting portion is blocked between the side block portion and the top block portion.

Abstract: An electronic device powered by a primary power source includes a switch, a first detection unit, a second detection unit, a warning unit and a secondary power source. The switch is configured for connecting and disconnecting the primary power source and the electronic device. The first detection unit is configured for detecting whether the switch is activated. The second detection unit is configured for detecting whether the primary power source is available if the switch is activated. The warning unit is configured for activating an alarm if the primary power source is unavailable. The secondary power source is configured for supplying electrical power to the first detection unit, the second detection unit and the warning unit.

Abstract: An electronic device includes a shell, an electronic component received in the shell, and a heat sink arranged between the electronic component and the shell. The heat sink includes a first heat spreader attaching to the electronic component, a second heat spreader spaced from the first heat spreader, and a plurality of fins between the first and second heat spreaders. Each fin includes a pair of contacting portions, a pair of bending portions and a connecting portion each of which being flat. The contacting portions are respectively connected to the two heat spreaders. The bending portions respectively extend from the contacting portions towards each other. Each bending portion forms a rear end adjacent to the other bending portion. The connecting portion interconnects the rear ends of the bending portions at opposite ends thereof.