Abstract: Disclosed is an interposer for electrically coupling two electrical components having different coefficients of thermal expansion (CTEs). The interposer has two substrates which have different CTE values, with each substrate having a first surface and a second surface. The interposer has electrical connectors located on the first surfaces of the two substrates, the connectors for making electrical connections to the two corresponding electrical components. A flexible-circuit layer is disposed between the two substrates and interconnects the connectors on the first substrate to the connectors on the second substrate. The two substrates are folded such that their second surfaces confront one another, where they may be attached to one another. General methods of making interposers for electrically coupling two electrical components are disclosed.

Abstract: An apparatus for a mainframe having redundant extractable devices is arranged in a mainframe of the IU specification for industrial computers or servos. The apparatus comprises a main body having at least two receiving spaces with respective openings at one end; closing ends of the two receiving spaces is arranged with a circuit board; two extractable units arranged within the receiving spaces and connected; to the circuit board; a front frame and a rear frame being installed at the main body. The two extractable units are extractable from the two openings so as to be connected to the circuit board. Moreover, the two extractable units are mounted to the main body and the main body is extractable in the computer mainframe, and thus an apparatus for a mainframe having redundant extractable devices is formed.

Abstract: A method for switching a keypad is to adopt an externally coupled keypad to a personal computer, wherein a switching program for switching between a hot-key function and a Num Lock function is programmed in a microprocessor of the keypad; when a hot-key or a Num Lock key is pressed, the hot-key function or the Num Lock function is enabled. Besides, every key of the keypad is printed with a figure and a symbol for performing at least two functions.

Abstract: A card insertable keypad includes a housing and a card inserting mechanism installed within the housing. When a memory card is inserted by the card inserting mechanism into the keypad, the data in the memory card can be sent to a computer for processing or data in the computer can be stored in the memory card.

Abstract: A method for forming a multilayer circuit substrate is disclosed. Preferably, a multilayer circuit substrate precursor is formed using a build up process. The multilayer circuit substrate precursor comprises an internal conductive post, an internal conductive layer coupled to one end of the conductive post, and an dielectric layer disposed around the conductive post. The multilayer circuit substrate precursor and the conductive post are cut to form a side electrical contact structure from the cut post.

Abstract: A method for electrically coupling electrode pads comprising forming a reflowed solder bump on a first electrode pad supported by a first substrate. The reflowed solder bump includes a solder material having a solder melting temperature. The method further includes forming a second electrode pad on a second substrate. The second electrode pad has an electrode structure defined by at least one converging continuous arcuate surface terminating in an apex and having an electrode material whose melting temperature is greater than the solder melting temperature of the solder material. The solder bump is heated to reflow or to soften the solder material, and subsequently the apex of the second electrode pad is pressed or inserted into the heated solder bump to couple the first electrode pad to the second electrode pad. A method for solder bump reflow comprising pressing or inserting the apex of an electrode into a reflowed solder bumps, and then reflowing solder material of the reflowed solder bump.

Abstract: An illumination structure for keyboards is provided with a light-indication section in a keyboard for a user to ascertain position of the keyboard easily and for promoting the integral beautification of the same. For realizing abovesaid object, a plurality of pushbutton sets and a first printed circuit board (PCB) used for transmission an instruction of a pressed pushbutton are disposed on the top face of the baseboard. Further, at least a light-indication section is defined in a proper position on the baseboard, and a second PCB is laid underneath the baseboard. A light emitter is arranged on the second PCB at a position corresponding to the light-indication section for emitting light through the latter when power is supplied to the second PCB. By abovesaid construction, a wireless keyboard with light source is built.

Abstract: Methods for forming multilayer circuit structures are disclosed. In some embodiments, conductive layers, dielectric layers and conductive posts can be formed on both sides of a circuitized core structure. The conductive posts are disposed in the dielectric layers and can be stacked to form a generally vertical conduction pathway which passes at least partially through a multilayer circuit structure. The formed multilayer circuit structures can occupy less space than corresponding multilayer circuit structures with stacked via structures.

Abstract: An optoreflective structure for reflecting an optical signal following a path defined by an optical waveguide comprising a first cladding layer having a first planar cladding surface; a waveguide disposed on the first cladding layer; and a second cladding layer disposed on the waveduide and having a second planar cladding surface. The first cladding layer, the second cladding layer and the waveguide terminate in a generally dove-tailed structure having a beveled planar surface. An optoreflector is disposed on the beveled planar surface for a changing direction of an optical signal passing through the waveguide. A method for producing an optoreflective structure comprising providing a substrate supporting a first cladding layer having a first planar cladding surface; disposing a waveguide material on the first cladding layer; and forming on the waveguide material a second cladding layer having a second planar cladding surface.

Abstract: A camera positioning seat includes a connecting device, an hook, and a position device. The connecting device has a connecting piece. One surface of the connecting piece has an embedding piece, a rear surface of the camera is installed with a buckling groove with respect to a position of the embedding piece. An elastic hook is installed at one lateral side of another surface of the connecting piece. The position device has a fixing box, and a sticky object is installed at one surface of the fixing box. Thereby, when the camera is to be fixed to the display device, the embedding piece of the connecting piece is embedded into the buckling groove at the rear side of the camera, and then the hook at another surface of the connecting device is hooked to the fixing box. Afterwards, by the sticky object of the fixing box is fixed to the display device and thus, the camera is fixed to the display device. The structure of the positioning seat has a simple structure and can be assembled and detached convenient.

Abstract: A gas burner control system includes a control unit formed of a valve seat and main valve assembly and at least one solenoid valve and installed in the burner body and connected to the electronic igniter, and an operation unit formed of a power switch and at least one flame intensity control switch and provided outside the burner body and connected to the control unit and the electronic igniter. Switching on the power switch opens the main valve assembly and drives the electronic igniter to ignite ignition flame. Switching on one flame intensity control valve opens the corresponding solenoid valve for producing the desired intensity of burner flame.

Abstract: A gas furnace control arrangement includes a control unit control unit and an operating unit adapted to control the control unit, the control unit having a valve seat holding a set of solenoid valves, the solenoid valves including a main valve for fuel gas input control, a mother flame valve adapted to control a gas passage from the valve seat to a mother flame nozzle, a high flow rate valve and a medium flow rate valve and a low flow rate valve adapted to control a respective gas passage from the valve seat to a main flame nozzle, the operating unit including a power switch adapted to switch on/off an electronic igniter and to close/open the main valve and the mother flame valve, a strong flame switch adapted to close/open the high flow rate valve, a medium flame switch adapted to close/open the medium flow rate valve, and a weak flame switch linked to the strong flame and the medium flame switch and adapted to close/open the low flow rate valve.

Abstract: A keyboard structure equipped with output device connects with a computer and is capable of executing and output text or image files. The keyboard structure includes a keyboard and a small output device disposed at a selected location in the keyboard. The keyboard has a signal transmission unit linking to the computer. When a confirmation execution command is entered on the keyboard, the computer immediately sends output text or image file being selected to the small output device for printing on the paper which may include label (barcode, POS), document filing labels (text, patterns, marks), small size photos (close-up picture), MEMO, message, telephone numbers and the like.

Abstract: A method of reducing junction capacitance. In a doped substrate or well, a super steep counter-doped implantation is performed, so as to form a super steep counter-doped region beneath the source/drain region in the substrate. As a consequence, the region near the source/drain region has a reduced doping concentration, and the junction capacitance of the source/drain region is reduced.

Abstract: A housing assembly for an extractable redundant array of independent disks includes a main frame placed in a casing through an open end of the casing; a plurality of extractable frames aligned in two spaced-apart rows in the main frame; and a signal-processing unit disposed in a corridor between the extractable frames for accommodating a plurality of extractable units. The extractable units are respectively inserted in the extractable frames and connected with the signal-processing unit to provide an expanded-capacity housing assembly for the extractable redundant array of independent disks in which each extractable unit (hard disk drive) and the main frame can be extracted individually and independently.

Abstract: A position control device includes a base board, a conductive spring contact unit and a control key. The base board has one side provided with a conductive contact set that includes a plurality of angularly spaced conductive contacts. The conductive spring contact unit is secured to the base board, and includes a plurality of angularly spaced spring contact arms that extend in radial directions and in a direction away from the base board such that each of the spring contact arms overlies spacedly a corresponding one of the conductive contacts of the conductive contact set. The control key is disposed on the conductive spring contact unit such that application of a force on the control key in a direction toward the base board will result in movement of an appropriate one of the spring contact arms for establishing electrical connection with the corresponding one of the conductive contacts.

Abstract: A charger for a wireless product comprises a wireless product having a power unit for supplying power to the wireless product; a computer having standard connecting ports which are not connected to any means; a standard connecting wire having one end being connected to the power unit, and having another end being connected to the standard connecting port. The computer charges to the power unit through the standard connecting wire. Then the power unit supplies power to the wireless product. When the power source of the wireless product can not be used, the computer will supply power to the wireless product so that the wireless product will operate continuously.

Abstract: An improved encoding sensor switch comprises an operatable unit having a driving shaft disposed in its pivot hole; an encoding socket; a sensor socket having its pivot portion penetrated the encoding socket and jointed with the driving shaft; a plurality of sensing contact pieces disposed on a concentric circle centered in the driving shaft; and a sensor element arranged on the sensor socket at a position corresponding with an arbitrary sensing contact piece. When operating, the driving shaft of the operatable unit will drive the sensing socket to move circularly, so that the sensor element will contact the sensing contact pieces one after another in rotation mode for output a train of predetermined encoded sensing signals.

Abstract: An improved structure of printed circuit board (PCB) under a pushbutton. The PCB includes a base layer and an insulation membrane, wherein conductive portions and corresponding contact portions are printed on the base layer and the insulation membrane respectively. Insulation portions are printed on each contact portion along its circumference without the need to apply glue on a corridor between every pair of the conductive portions in the base layer and the contact portions in the insulation membrane when combining the insulation membrane to the base layer by gluing or direct printing. By this arrangement, an air channel can be reserved for being applicable to various button groups or waterproof membrane PCBs.

Abstract: A method of constructing an electronic circuit assembly comprising forming at least one electrode on a substrate; forming a layer of undercladding material upon the substrate and over the electrode; and forming a wave guide core layer on the layer of cladding material. The wave guide layer is patterned to produce at least one optical wave guide and exposed undercladding material. The method of constructing further includes forming a layer of overcladding material upon the exposed undercladding material and over the optical wave guide; forming at least one via aperture through the overcladding material and the undercladding material; and disposing a conductive material in the via aperture to produce an electronic circuit assembly.