Abstract: An exemplary electronic device (30) includes a main body (40) and two supporting mechanisms (60). The supporting mechanisms are formed at two adjacent corners of the main body respectively. Each supporting mechanism includes a support leg (62) and a sliding member (63). The support leg is rotatably connected to the main body. The sliding member is slidably connected to the main body. The support leg is movably connected to the sliding member, in order to make the support leg disengage form the sliding member when the sliding member sliding relative to the main body.

Abstract: An exemplary light emitting diode includes a main body, a red light emitting chip, a green light emitting chip, and a blue light emitting chip. The main body includes two inner side surfaces opposite to each other and a inner bottom surface connected with the side surfaces. The side surfaces and the bottom surface cooperatively define an accommodating space. The red light emitting chip, the green light emitting chip and the blue light emitting chip are positioned at the bottom surface and the side surfaces of the accommodating space, respectively.

Abstract: A fan controller includes an input module and an output module. The input module is used for receiving a power supply signal from a power supply which is used for providing power to a fan, and outputting a trigger signal when the power supply signal when the power supply turns off. The output module is used for providing power for the fan when the power supply turns off. The output module includes a timer circuit and an integrator circuit. The timer circuit is coupled to the input module, and is used for receiving the trigger signal, and providing the power for the fan according to the trigger signal for a predetermined amount of time. The integrator circuit is used for providing a threshold voltage for the timer circuit, the threshold voltage tripping termination of the power provided by the timer circuit.

Abstract: An air duct (10) is used for directing air in a computer enclosure (50) to flow from an interior to an exterior thereof for dissipating heat generated from an electronic device (82) in the computer enclosure. At least one cable is provided in the computer enclosure for power supply or data transmission. The air duct includes a top wall (11), a pair of side walls (13), and at least one retaining member. The side walls depend from opposite ends of the top wall. At least one retaining member is formed on at least one of the top wall and one of the side walls for retaining the at least one cable therein. The at least one retaining member and the at least one of the top wall and the side walls cooperatively form a retaining space therebetween.

Abstract: An exemplary slide rail assembly includes a first rail with a protrusion, a second rail, a releasing member, a pair of push buttons, a first latch member, and a second latch member. The releasing member is slidably attached to the second rail and includes a pair of openings for receiving the buttons, and two angular driving edges. The second rail includes a pair of resilient tabs detachably and respectively engaging with the buttons and the releasing member. The first and second latch members are pivotably attached to the second rail. The first latch member includes a post extending therefrom to be selectively driven by the driving edges of the releasing member. The buttons are actuated to release the releasing member from the resilient tabs and move the releasing member to drive the first latch member and the second latch member to disengage the protrusion of the first rail.

Abstract: An exemplary method for edge scan of an image is provided. The method includes: setting parameters of an image edge scan; setting parameters for scanning edges of the workpiece; obtaining an image of the workpiece; processing the image and designating a point in the image; searching a first edge point near the designated point in a clockwise direction, wherein there is at least one point adjacent to the first edge point whose color is different with the color of the first edge point; searching other edge points in the manner of searching the first edge point by utilizing a recursive method; calculating coordinates of initial points and end points of scan lines according to the parameters, and searching scanned points according to the initial points and end points on the image that has not been processed; scanning edges of the image based on the scanned points. A related system is also provided.

Abstract: A power supply circuit for a motherboard includes a first resistor, a second resistor, a Schottky diode, and a direct current (DC) voltage source. The Schottky diode includes a first anode, a second anode, and a cathode. The first anode of the Schottky diode is respectively coupled to terminals of the first and second resistors, another terminal of each of the first and second resistors is respectively coupled to a power supply and ground. The second anode of the Schottky diode is coupled to the DC voltage source, the cathode of the Schottky diode is coupled to a south bridge.

Abstract: An exemplary hinge positioning structure (20) includes a base (22), a pivot shaft (24) engaged in the base, a pivot shaft gripper (264), and a resilient member (266). The pivot shaft is rotatably engaged in the base. The pivot shaft gripper is sleeved on the pivot shaft. An end of the pivot shaft gripper is engaged with the base so that part of the pivot shaft gripper is fixed to the base. Two ends of the resilient member are connected to the base and another end of the pivot shaft gripper, respectively. The resilient member applies a force on the pivot shaft gripper so that the pivot shaft gripper tightly grips on the pivot shaft, and the pivot shaft gripper is relaxed by an external force for allowing the pivot shaft to rotate relative to the base. The present invention further provides a hinge positioning unit (26).

Abstract: A power supply control signal generating circuit includes a connector, a switch, a transistor, and an input-output (I/O) controller. The connector includes a first pin and a grounded second pin. The switch has two terminals respectively coupled to the first pin and the second pin of the connector. The transistor has its base coupled to the first pin of the connector and a power supply via a first resistor, its collector coupled to the power supply via a second resistor, and its emitter grounded. The I/O controller has an input terminal coupled to the collector of the transistor, and outputs a power supply control signal at the output terminal.

Abstract: A computer front bezel includes a main body, a sliding cover, and two elastic members. The main body defines two substantially opposite sliding grooves. The sliding cover includes two posts slidably received in the sliding grooves of the main body respectively. The two elastic members are connected to the sliding cover and the main body. One end of each of the elastic members is rotatably connected to the main body, and the other end of each of the elastic members is rotatably connected to the sliding cover. The sliding cover is capable of moving between a first, a second and a third state. The first state is that the sliding cover is in a closed position and the two posts are approximately located at first end of the grooves. The second state is that the sliding cover is between the first and third state, and the elastic members exert more force than when the sliding cover is in the first or third state.

Abstract: The present invention provides an audio signal switcher including a jack switcher and a plug switcher. The jack switcher includes an audio jack and a first USB port. The first USB port includes a first data pin, a second data pin, a power pin, and a ground pin. The audio jack includes a left track segment, a right track segment, and a ground segment, which are electrically isolated coupled to at least three pins of the first USB port. The plug switcher includes an audio plug and a second USB port. The second USB port also includes a data pin, a second data pin, a power pin, and a ground pin. The audio plug also includes a left track segment, a right track segment, and a ground segment, which are electrically isolated coupled to at least three pins of the second USB port according to a connection between the audio jack and the first USB port. The plug switcher can be connected to the jack switcher by a USB cable.

Abstract: An exemplary liquid crystal display device (1) includes a first substrate assembly (14), a second substrate assembly (16) parallel to the first substrate assembly, a liquid crystal layer (18) sandwiched therebetween, and a backlight module (12) adjacent to the first substrate assembly. The first substrate assembly includes a first substrate, a plurality of pixel electrode (145) and a color filter (148). The first substrate includes a plurality of pixel regions. Each pixel region includes a reflection region and a transmission region. The reflection region includes a thin film transistor (TFT) (146) and a reflective layer (147) covering the TFT. The pixel electrodes cover the transmission regions and the reflection regions.

Abstract: A key testing apparatus (100) is provided. The key testing apparatus includes a base (11) and an actuator (12). The actuator includes a testing member (17) and a mounting member (18). The mounting member includes at least one base board (181) fixed to the base, a lower board (182), a mounting board (183), and a mounting sheet (185). The lower board is adjustably attached to the base board. The mounting board is adjustably attached to the lower board. The mounting sheet is adjustably attached to the mounting board. The clamping device includes a base desk (131), a clamping platform (132), at least one first clamping board (133) and second clamping board (134). The base desk is adjustably attached to the base. The clamping platform, at least one first clamping board, and at least one second clamping board are adjustably attached to the base desk.

Abstract: A testing system for a power supply (40) includes a testing chamber (10), a control switch, an electrical load (50), an AC source (60), and a PLC (30). The power supply has a voltage choice switch. The testing chamber receives the power supply therein. The testing chamber provides a first or a second ambient temperature and supplies a testing environment for the power supply. The control switch switches the power supply to operate between a standby state and an operational state. The electrical load is connected to the power supply. The AC source is connected to the power supply. The AC source outputs the first voltage or the second voltage to the power supply. The PLC controls switching states of the voltage choice switch and the control switch in a manner such that the power supply selectively operates in one of combined switching states of the voltage choice switch and the control switch.

Abstract: A printed circuit board (PCB) having vias for reducing reflections of input signals includes a first signal layer, a second signal layer, one via, an input signal line arranged on the first signal layer, and an output signal line arranged on the second signal layer. The via further includes a drill hole, a first pad, and a second pad. The first pad is electrically connected with the input signal line, and the second pad is electrically connected with the output signal line. An outer diameter of the first pad is smaller than an outer diameter of the second pad.

Abstract: A system for testing connections of two connectors, each of which includes a pair of verification pins and a number of signal pins, includes a verification testing module, a controlling module, a signal testing module, and a reporting module. The verification testing module is configured for detecting whether each pair of verification pins are electrically connected. The controlling module is configured for allowing communication between each pair of signal pins if the pair of verification pins is detected to be electrically connected. The signal testing module is configured for testing whether each pair of signal pins are electrically connected. The reporting module is configured for reporting the results of the verification testing module and the signal testing module.

Abstract: An exemplary liquid crystal display (200) has a liquid crystal panel (240); a gate driving circuit (230) configured for scanning the liquid crystal panel; a data driving circuit (220) configured for providing a plurality of gradation voltages to the liquid crystal panel; a photo sensor (241) configured for measuring a luminance of ambient light and generating a corresponding optical signal; a luminance control circuit (231) for receiving the optical signal from the photo sensor and transferring the optical signal to a measurement signal; a timing control circuit (210) configured for controlling the gate driving circuit and the data driving circuit; and a backlight circuit (270) for driving a light source to emit light beams for illuminating the liquid crystal panel, according to the measurement signal from the luminance control circuit.

Abstract: An exemplary hot-melting machine (20) includes a worktable (23), a number of carriers (24), a heater (25), at least one cooler (26), and a controller (28). The carriers are located on the worktable and are uniformly spaced apart. Each carrier is configured for holding a workpiece. The heater is configured for heating the workpiece. The cooler is configured for cooling the workpiece. The controller is configured for driving the worktable to rotate, the heater to move down toward and up away from a corresponding one of the carriers, and the at least one cooler to move down toward and up away from another corresponding one of the carriers. At each of successive stages in operation of the hot-melting machine, one of the carriers is aligned with the heater, another one the carriers is aligned with the at least one cooler, and a further one of the carriers is positioned such that a workpiece can be unloaded from the further one of the carriers and another workpiece can be loaded on the further one of the carriers.

Abstract: An exemplary apparatus for testing planeness of a workpiece is provided. The apparatus includes a platform for supporting the workpiece thereon, a bracket vertically mounted to the platform, and a testing system mounted to the bracket for testing the workpiece. The testing system includes a testing member, a test dial indicator having a sliding pole, and a fine-tuning member for controlling the movement of the testing member. One end of the testing member is connected to the sliding pole. When testing, the fine-tuning member drives the testing member to move toward the workpiece, until the testing member contacts the workpiece. The sliding pole extends together with the testing member. A value is shown by the test dial indicator that indicates the moving distance of the testing member. A distortion value of the workpiece can be obtained according to the value.

Abstract: A chip card retaining mechanism for retaining a chip card (30) mounted in a electronic device 200 is provided. The electronic device includes a housing (10) having a battery compartment (12) defined therein. The chip card retaining mechanism includes a receiving portion (14) formed on the housing for fittingly receiving the chip card therein, and a locking assembly. The receiving portion is opening in the battery compartment of the electronic device. The locking assembly includes a stop mechanism configured for preventing the chip card retreating from the receiving portion, and a latch plate (28). A first end portion of the latch plate is rotatably connected with the housing such that an opposite second end portion of the latch plate is capable of opening or closing the opening of the receiving portion.