Abstract: A step motor driving apparatus includes a micro control unit (MCU), a pulse generator, a first step motor driver, a second step motor driver, and a communication port. The first step motor driver is configured for driving a first step motor and connected to the MCU. The second step motor driver is configured for driving a second step motor and connected to the MCU. The MCU is connected to the second step motor driver via the pulse generator. The pulse generator is configured to supply pulse signals to the second step motor driver. The communication port is connected to the MCU. The MCU receives a corresponding command from an external control apparatus via the communication port. The MCU selectively controls the first step motor driver to drive the first step motor or controls the second step motor driver to drive the second step motor according to the command.

Abstract: A wide angle lens module includes a first lens and a second lens with negative refracting power, a third lens and a fourth lens with positive refracting power, a fifth lens with negative refracting power, a sixth lens with positive refracting power, and a seventh lens with negative refracting power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order from an object side to an image side.

Abstract: A ball bearing slide assembly includes a first slide, a second slide, a slide-aiding member, and a positioning member. The first slide is slidably received in the second slide. The second slide defines a receiving hole. The slide-aiding member is sandwiched between the first slide and the second slide. The slide-aiding member defines a slot. The positioning member is pivotably mounted to the slide-aiding member and forms a positioning tab. The positioning tab extends through the slot of the slide-aiding member for engaging in the receiving hole of the second slide to lock the slide-aiding member with the second slide such that the first slide is slidable inward relative to the second slide without pushing the slide-aiding member inward. The first slide, when slid inward, is capable of pushing the positioning member to disengage the positioning tab from the receiving hole such that the slide-aiding member is slidable relative to the first and second slides.

Abstract: A digital watermarking system and method is provided. The digital watermarking system mainly includes a storing unit, a background image obtaining module, a pixel determining module, an encrypting module, and a storing module. The storing unit is for storing text information, the text information including textual information and one or more background images. The background image obtaining module is for obtaining one background image to be watermarked from the storing unit. The background image includes plural pixels, and each of the pixels has a brightness value. The pixel determining module is for earmarking the pixel to be adjusted, an initial brightness value of the earmarked pixel being in a predetermined range. The encrypting module is for adjusting the brightness value of the earmarked pixel. The storing module is for storing watermarked text information in the storing unit. Related methods are provided.

Abstract: An eye protection apparatus includes a sensor adapted for sensing the presence of a person within a predetermined distance range in front of a monitor and outputting a pulse signal, an amplifier unit connected to the sensor for receiving the pulse signal and outputting an amplified signal, a comparator connected to the amplifier unit to receive the amplified signal, a MPU connected to the comparator, and an alarm circuit connected to the MPU. The comparator compares the amplified signal with a predetermined signal, and sends a result to the MPU; the MPU outputs a control signal according to the result to the alarm circuit, and the alarm circuit controls power to the monitor.

Abstract: A mechanical shutter includes a base, four shutter blades, four permanent magnets, and four electromagnets. The base has an aperture for permitting light into a camera module. The shutter blade includes a light shielding portion capable of moving across the aperture by rotating about a shaft formed on the base, a securing portion secured on the base, and an elastic portion connecting the light shielding portion and the securing portion. The permanent magnet is secured on a light shielding portion and sleeves around a shaft. The electromagnets are capable of providing magnetic force to rotate the permanent magnets.

Abstract: A water purification apparatus (10) includes an evaporating chamber (13), a light concentrator (11), and a heat pipe (12). The evaporating chamber is for containing impure water. The evaporating chamber has a connecting opening (134) and a vapor outlet (131). The light concentrator is for concentrating sunshine. The heat pipe has an evaporating section (121) and a condensing section (122). The evaporating section is irradiated by the concentrated sunshine, and the condensing section is disposed in the evaporating chamber through the connecting opening.

Abstract: A mold for injection molding includes a male mold portion, and a female mold portion mating with the male mold portion to define a parting face therebetween. The female mold includes a mold cavity defined at the parting face, an injection aperture communicated with the mold cavity, an air channel defined at the parting face and evenly spaced from and partially surrounding the mold cavity, a spacing portion formed between the mold cavity and the air channel, and a gap formed between the male mold portion and the spacing portion for transmitting air from the mold cavity to the air channel during injection of molten plastic. When injecting molten plastic, air in the mold cavity can be expelled in time under pressure of the molten plastic and through the air channel. Therefore, the surface quality of the molded product can be improved, by avoiding formation of air holes, fissure.

Abstract: A method for fabricating a super-aligned carbon nanotube array includes the following steps: (1) providing a flat and smooth substrate (11); (2) depositing a catalyst layer (12) on the substrate at a rate of less than about 5 nm/s; (3) annealing the catalyst layer at atmosphere; (4) positioning the substrate with the catalyst layer into a furnace; (5) heating the furnace up to a predetermined temperature; and (6) supplying a reaction gas into the furnace, thereby growing a number of carbon nanotubes (22) on the substrate, via the catalyst layer, such that the carbon nanotube array is formed on the substrate.

Abstract: A detecting method for measuring gaps between two parts of an object is provided. The detecting method selects a reference image and a measured image, merges the reference image and the measured image to form an image of the object, grids the reference image and the measured image to obtain triangle mesh surfaces, obtains boundary points and outline points of the measured image, and obtains triangles on a joint portion of the reference image and measured points on a corresponding joint portion of the measured image. The method further compares each measured point with an obtained triangle to obtain gap values of the joint portion between the reference image and the measured image, and outputs an analysis report of the gap values on a display device.

Abstract: A weld nut includes a main body and a flange. The flange is extended outwardly from the main body and surrounding the main body, and comprises teeth disposed evenly on the periphery thereof. Mis-positioning of the weld nut is avoided when soldering the weld nut to a printed circuit board.

Abstract: An electrical connector comprises an insulative housing and a plurality of contacts. Each contact comprises an upper contact and a lower contact. The upper contact has a retention portion and a contact portion. The lower contact has a soldering portion and a planar board extending upwardly from the soldering portion. The lower contacts fixed to different parts of upper contacts, respectively, so as to have a larger neighbor distance than that of the upper contacts.

Abstract: A keypad module for a mobile electronic device is provided. The mobile electronic device has a main body. The keypad module includes a receiving bracket adapted to be mounted on the main body. A flexible circuit board is arranged in the receiving bracket. A switching sheet is located above the flexible circuit board, and capable of actuating the flexible circuit board to produce electrical signal. A rubber sheet is disposed on the switching sheet, and shielding cover sits on the rubber sheet. Wherein the shielding cover is secured to receiving bracket. The shielding cover and the receiving bracket cooperatively define a receiving housing to accommodate the flexible circuit, the switching sheet, and the rubber sheet.

Abstract: An electrical connector assembly includes a first and second connector (A, B) engaged with each other. The first connector includes a first housing (20) with a middle plate (205), a number of first contacts (50) arranged into the first housing, a shield shell (10) surrounding the first housing. The second connector includes a second housing (60) defining a receiving slot (603), in which the middle plate of the first housing is seated, a number of second contacts (80) electrically connected to the first contacts in the receiving slot, a grounding element (70) assembled into the second housing and engaged with the shield shell.

Abstract: An electrical connector includes an insulative housing, a number of signal contacts, a number of shielding plates and a grounding member touching the shielding plates so that the shielding plates are jointly connected with each other. The shielding plates are assembled to the insulative housing and disposed between the signal contacts of adjacent columns. Each shielding plate includes a tab projecting into a base of the insulative housing. No mounting tail for establishing connection between the shielding plates and a circuit board is set on any of the shielding plates. Instead, the grounding member comprises a number of mounting tails for being connected to the circuit board so as to establish electrical connection between the shielding plates and the circuit board.

Abstract: A transformation circuit includes a bidirectional switch, a capacitor, and a triac. A first electrode of the triac is for receiving an input alternating current (AC) voltage. A second electrode of the triac is for outputting a transformed AC voltage. A control electrode of the triac is electrically connected to one terminal of the bidirectional switch, and the other terminal of the bidirectional switch is electrically connected to one terminal of the capacitor, and the other terminal of the capacitor is electrically connected to the first electrode of the triac. When the capacitor is charged or discharged, the bidirectional switch is switched on or off, and the triac is triggered on or off accordingly, such that a duty cycle of the input AC voltage is changed to form the transformed AC voltage.

Abstract: An electrical connector includes a housing, a number of contacts retained in the housing and a metal shell covering the housing to form a receiving space with the tongue portion for receiving an electrical plug. The housing has a base portion and a tongue portion extending forwardly from the base portion. The contacts consist of two pairs of differential signal contacts and a pair of grounding contacts between the two pairs of differential signal contacts. Each contact has a contact portion. All contact portions are arranged in a row on one side of the tongue portion.

Abstract: An electronic device support includes a V-shaped base, a supporting leg, a cable and a number of lights. The V-shaped base includes a pair of legs extending from an apex of the V-shaped base. The supporting leg is pivotably connected to the V-shaped base adjacent to the apex. The cable is embedded in at least one of the legs and the supporting leg and includes a connector plug electrically connected to the other end. The lights are rotatably mounted on one of the distal end of the legs of the base away from the apex of the V-shaped base.

Abstract: An electrical connector (100) electrically connects a first IC package (800) having a first width and a second IC package (900) having a second width different from the first width. The electrical connector includes an insulative housing (2) defining a number of contact recesses (20), a number of contacts (3) inserted in the contact recesses, a connecting member (4) mounted on the insulative housing, and a number of guiding members (6) assembled to the connecting member for guiding the first IC package in the connecting member at a first state, and detachable from the connecting member for facilitating insertion of the second IC package in the connecting member at a second state.

Abstract: A coaxial connector for receipt of a central contact of a mating coaxial connector to be inserted therein comprises an insulative base defining a space section thereof, a mating section defined on the insulative base has a pin hole intercommunicating with the space section; a fixed contact and a movable contact essentially stacked in a vertical direction and received in the space section; the fixed contact are arranged to be sandwiched by the upper insulative base portion and the lower insulative base portion, the fixed contact has a planar contact part along a lengthwise direction; the movable contact has a base portion along the lengthwise direction, the base portion is retained by the upper and lower insulative base portion, a cantilever extends upwardly from the base portion and forms an acute angle thereof, the cantilever resists on the fixed contact, the movable contact further includes a soldering tail extending opposite to the cantilever; and wherein a pair of supporting arms extends symmetrically fro