Abstract: A backlight driving and control circuit with an isolated power factor correction structure includes a power stage for providing a power supply; a driver stage having a first power factor correction unit for correcting the power factor of the power supply and outputting DC power; an inverter for converting a middle-voltage DC power into a high-voltage power output and driving the operation of a backlight light emitting component; and a control/dimming stage having a second power factor correction unit, a DC transformer unit, and an AD board installed at a secondary winding of the DC transformer unit and grounded jointly with the inverter. With the invention, the power factor correction unit can be electrically isolated from the power stage, and the AD board can directly control/dim the inverter of the driver stage to change the operating status of the backlight light emitting component.

Abstract: A circuit structure for a lamp set which includes a socket, a lamp assembly mounted onto the socket and an electrode portion. The lamp assembly surrounds a housing space inside to hold a power distribution dock connecting to the socket. The power distribution dock has a holding space to hold a power conversion element which is electrically connected to the electrode portion to receive external electric power and transform to starting power to drive the lamp assembly to generate light. The power distribution dock and the power conversion element are located in the housing space. Thus the total height of the socket is reduced and the lamp set can be shrunk to a smaller size.

Abstract: A positioning device for clipping apparatus includes a hollow body which has an open side on one side that holds a track portion and an anchor portion on another side. The body houses a sliding member having a clipping unit and a harness arm. The harness arm is connected to the track portion to form a displacement path of the sliding member. The clipping unit includes an upper clipping portion and a lower clipping portion. The upper clipping portion is driven by the sliding member to move close to the lower clipping portion. A linking means connects an elastic element to the anchor portion and the sliding member so that the elastic element can be stretched and retracted against the displacement path of the sliding member to provide a returning elastic force to the sliding member. Thereby the sliding member can be positioned rapidly on each displacement path.

Abstract: A keyboard includes a key module and a base. The key module includes at least a second anchor portion. The base has a first anchor portion corresponding to the second anchor portion that is engageable with each other to couple the key module with the base. The base further has a signal transmission module to form electric connection with the key module. The keyboard thus formed is thinner. Assembly is simpler and production cost is lower.

Abstract: A circular piezoelectric apparatus includes an electrode assembly which has an independent electrode located on a perimeter side wall of the circular piezoelectric apparatus and two separated electrodes located respectively at two opposite surfaces of the circular piezoelectric apparatus, a first structure located between the two separated electrodes that has a polarized direction coincided with a first axial direction directing from one electrode of the two separated electrodes to the other electrode thereof, and a second structure surrounding the first structure about the first axial direction and having a polarized direction coincided with a radial direction of the perimeter. One of the three electrodes is electrically connected a ground electrode to provide a voltage source for supplying an input voltage and a load through at least a conductive wire, and another electrode is electrically connected to an input electrode of the voltage source through another conductive wire.

Abstract: A backlight module actuation method aims to modulate a unsaturated luminance cycle in a dimming cycle for a backlight module in the condition of a saturated luminance. An oscillation amplitude time series of the duty cycle of a transformer at the rear end is set according to the dimming cycle to form a switch kinetic energy in the unsaturated luminance cycle. The switch kinetic energy can eliminate the parasite capacitance generated when the backlight module is in the condition of the saturated luminance.

Abstract: The present invention includes a wheel mounted onto an electronic device through a holding rack and turnable freely under an external force. The wheel has a click portion to generate signals that consists of concave and convex portions formed radially and equally spaced from one another. A signal generation means is provided including at least two legs and a conductive element located between the two legs having an elastic return force. The conductive element is moved to connect the two legs due to rotation of the click portion to generate instruction signals. A friction force is generated when the conductive element is connected to the click portion. A rotation resistant force is generated when the conductive element and the rotating click portion are connected. A composite force is formed by the force to generate rotation and the rotation resistant force. The composite force forms an inverse relationship with the weight of the wheel.

Abstract: An improved LCD back light panel lamp connecting structure. A high voltage end and a feedback end of the adjacent cold cathode fluorescent lamp (CCFL) modules alternate, and the feedback end of the CCFL is coupled to a single return board. The return board is coupled to a pulse width modulation (PWM) control unit so that the return board feeds back the current to the PWM control unit. The high voltage end of the CCFL is coupled to a transformer.

Abstract: The present invention includes a directional wheel which has a roller movable under a force. The roller has two sides forming a first and a second leaning portions that are held by a first and a second support structures. The first support structure and the second support structure have respectively a first moving end and a second moving end movable by the first leaning portion and the second leaning portion. A first contact and a second contact are provided respectively in the moving range of the first and second moving ends to connect the first and second moving ends to generate signals. The first and second leaning portions keep two sides of the direction wheel in a balanced manner in regular conditions. The directional wheel is movable under a force to synchronously move the first and second support structures in the direction of the force to generate a corresponding signal.

Abstract: A keyboard includes a key module and a base. The key module includes at least a second anchor portion. The base has a first anchor portion corresponding to the second anchor portion that is engageable with each other to couple the key module with the base. The base further has a signal transmission module to form electric connection with the key module. The keyboard thus formed is thinner. Assembly is simpler and production cost is lower.

Abstract: A multi-direction input device for computers includes a directional wheel, a sliding member and a plurality of electrodes. The directional wheel has a rotational degree-of-freedom and two moving degree-of-freedom to be moved downwards, perform forward rolling, backward rolling and sideward moving thereby to connect corresponding electrodes to generate corresponding signals. In regular conditions the sliding member can be in cooperation with a movable contact to support the directional wheel. When the directional wheel is moved downwards the sliding member drives a corresponding electrode to generate a click signal.

Abstract: A piezoelectric plate electric connection structure aims to receive an input voltage from a voltage source and goes through a polarization process to deliver an output voltage. It has an input electrode on a piezoelectric plate to receive input from the voltage source and an output electrode to deliver the output voltage that are located on two surfaces normal to the polarization direction. One surface has an independent electrode. Another surface has two separated electrodes. The input electrode and output electrode are respectively the independent electrode and one of the separated electrodes. The input and output electrodes are spaced by the piezoelectric plate which is dielectric and pressure-resistant. Thus discharge phenomenon can be prevented between the input electrode and the output electrode.

Abstract: A luminous keyboard includes a cap which has a bottom lid with a first light directing zone formed thereon. The cap also has a first light blocking surface on an outer surface corresponding to the first light directing zone. At least one luminous unit is provided to provide light to the first light directing zone so that the light projects to the first light directing zone is diffused and blocked by the first light blocking surface, and finally projected to a keyboard portion to illuminate keycaps. The bottom lid replaces the light directing layer used in the conventional luminous keyboards. Thus the interior space of the keyboard can be shrunk to make fabrication and assembly of the keyboard simpler. The keyboard thus formed is thinner and lighter and suitable for mass production.

Abstract: A means for being electrically connected to an electrode of a piezo-electric plate is adapted for connecting the piezo-electric plate to a circuit board disposed under the piezo-electric plate. The piezo-electric plate and the circuit board are respectively provided with a first electrode and a second electrode corresponding to the first electrode. The means includes a conductive element and an elastic element. The conductive element includes at least two connecting surfaces electrically connected to each other and respectively electrically connected to the first electrode and the second electrode. The elastic element is joined with the conductive element and located between the piezo-electric plate and the circuit board.

Abstract: A sideward clipping apparatus aims to clip and release an article through double-depressing actions in cyclic operations. It has a sliding member which includes an upper clipping portion and a lower clipping portion that are coupled through a first base and a second base. The lower clipping portion synchronously drives the upper clipping portion through the first base at an initial force receiving state to form a first fan moving track. The lower clipping portion is in contact with the sliding member and moved vertically to a second position under the force to drive the upper clipping portion through the second base to form a second fan moving track. Thereby the upper clipping portion and the lower clipping portion form a clipping space when the sliding member is moved to the second position to accurately clip the article.

Abstract: The present invention discloses an inverter test device and a method thereof, which provides a single-load environment or a multi-load test environment to test electrical performance of an inverter or inverters, including: unbalanced current comparison, phase comparison, current/voltage deviation, and fusion heat (I2T), and record the test results, wherein the test method of the present invention is implemented with the procedures, which can be executed in a computer or a similar device to undertake control and data processing, and the electrical signals acquired by the inverter test device are processed, compared and calculated in order to realize the abovementioned tests of unbalanced current comparison, phase comparison, current/voltage deviation, and fusion heat (I2T).

Abstract: An improved LCD back light panel lamp connecting structure comprises cold cathode fluorescent lamps (CCFL), and adjacent CCFL modules having high voltage ends and feedback ends arranged alternately, and the feedback ends on both sides of the CCFLs respectively coupled to two return boards. The feedback end of the CCFL is coupled to a proximate return board, and the return board is disposed separately at both ends of the CCFLs. Two return boards are coupled to a pulse width modulation (PWM) control unit so that the two return boards feed back the current to the PWM control unit. The high voltage end of the CCFL is coupled to a transformer.

Abstract: A security system having corresponding intelligent voice response and a voice response method thereof aims to output a corresponding intelligent voice response message according to the identification (ID) of visitors. The security system includes a trigger unit to detect action conditions of a visitor and generates a trigger signal, an ID system which has a safe person list, a database containing at least one voice message and an ID unit linking to the database to get the ID information of the visitors and compare with the safe person list to generate an ID signal, and a control unit to get the trigger signal and ID signal, and the voice message from the database to make voice response to the visitor through an output unit.

Abstract: A rotary structure for radiation fans mainly includes a seat for housing a radiation fan and two brackets coupling with the seat to hold two sleeves. The two sleeves are coupled with two rotary ends of a spindle of the radiation fan to confine the spindle to rotate about a single axis. Thereby the spindle can rotate without skewing while the radiation fan is operating, and impact and noise generation can be prevented.

Abstract: A mechanical wheel instruction apparatus to replace the conventional wheel structure that uses a grating switch to output signal. The invention has a mechanical conductive terminal set to output instruction signals when become conductive. The apparatus of the invention has a wheel which has a rotation side with convex sections located on the perimeter in an equally spaced manner. Every two neighboring convex sections are interposed by a concave section. A base board is provided to electrically connect to a contact leg assembly which has a forward contact leg and a reverse contact leg located on the convex sections and a common contact leg located on the concave section. When the wheel is subject to a force and rotates, the convex section pushes the forward contact leg and the reverse contact leg to contact the common contact leg to output a forward rotation instruction and a reverse rotation instruction. The invention may be fabricated at a lower cost than the grating switch and save installation space.