Abstract: A reference circuit for providing a precision voltage and a precision current includes a bandgap voltage reference circuit, a positive temperature coefficient calibrating circuit, a threshold voltage superposing circuit and precision current generator interconnected in cascade. From the bandgap voltage reference circuit, a bandgap voltage is outputted as the precision voltage, and a PTAT current is outputted to the positive temperature coefficient calibrating circuit along with the bandgap voltage for generating a PTAT voltage. In response to the PTAT voltage from the positive temperature coefficient calibrating circuit, the threshold voltage superposing circuit generates a first voltage which is equal to the PTAT voltage plus a threshold voltage. Then the precision current generator outputs a reference current as the precision current in response to the first voltage.

Abstract: An extension to USB includes an insulative tongue portion and a number of contacts held in the insulative tongue portion. The contacts have four conductive contacts and a plurality of differential contacts for transferring differential signals located behind/forward the four standard USB contacts along a front-to-rear direction. The four conductive contacts are adapted for USB 2.0 protocol and the plurality of differential contacts are adapted for non-USB 2.0 protocol. The extension to USB is capable of mating with a complementary standard USB 2.0 connector and a non-USB 2.0 connector, alternatively.

Abstract: A reference current generator circuit suitable for low-voltage applications is provided. The generator circuit is fabricated in a chip for generating a precise reference current based on a precise reference voltage and a precise external resistor. The generator circuit provides an equivalent resistance coupled in parallel with the external resistor to provide resistance compensation and reduce the impedance of seeing into the chip from a chip pad. In addition to the resistance compensation, only moderate capacitance compensation is required to enhance the phase margin of the generator circuit, so as to achieve a stable loop. Therefore, chip area and cost can be reduced in low-voltage applications. In addition, the generator circuit reproduces the reference current generated by the external resistor by utilizing current mirrors, so as to eliminate the effect on currents caused by parallel coupling of the equivalent resistance and the external resistor.

Abstract: An extension to USB includes an insulative tongue portion and a number of contacts held in the insulative tongue portion. The contacts have four conductive contacts and two pairs of differential contacts for transferring differential signals. The four conductive contacts consist of a power contact, a ground contact, a ? data contact and a + data contact. One pair of the differential contacts is located between the power contact and the ? data contact and the other pair of the differential contacts is located between the power contact and the + data contact. The four conductive contacts are for USB protocol and arrangement of the four conductive contacts with the insulative tongue portion is compatible to the standard USB connector. The two pairs of differential contacts are for non-USB protocol. The extension to USB is capable of mated with a commentary standard USB connector and a commentary extension to USB, alternatively.

Abstract: A connector assembly (100) includes a first connector (10) and a mating second connector (30). Each connector includes a number of leadframes (21, 41) stacked one by one. Each leadframe has a first leadframe housing (211, 411) and a second leadframe housing (214, 414) attached to the first leadframe housing. Each connector includes an array of first terminals (5) and an array of second terminals (6) respectively mounted along the second and the first leadframe housings, and a pair of latching members (25, 45) mounted at opposite sides of the leadframes together with the first and second terminals to tie the plurality of stacked leadframes as a whole.

Abstract: An electrical connector includes an electrical receptacle and an electrical plug for mating with the electrical receptacle. The electrical receptacle includes a first port, a second port communicating with the first port. The second port can accommodate a standard B-type USB 2.0 plug. The first and the second ports can be combined to receive the electrical plug for high-speed signal transmission.

Abstract: An electrical connector includes an electrical receptacle and an electrical plug for mating with the electrical receptacle. The electrical receptacle includes a first port, a second port communicating with the first port. The second port can accommodate a standard B-type USB 2.0 plug. The first and the second ports can be combined to receive the electrical plug for high-speed signal transmission.

Abstract: An LED lamp (100) includes a cover (10) having two concave reflective surfaces (121, 123), a base (21) disposing over the cover, a lens (40) locating in a middle of the base, and two LEDs (30) mounted on a bottom surface of the base. The lens and the LEDs face the reflective surfaces of the cover. The reflective surfaces each are a part of an ellipsoid. The reflective surfaces share a common focus O within an area of the lens. The LEDs are respectively located at other two focuses M1, M2 of the reflective surfaces. Light rays generated by the at least two LEDs are directed to the reflective surfaces, then reflected towards the lens of the base, and finally reach an outside of the LED lamp through the lens.

Abstract: An extension to USB includes an insulative tongue portion and a number of contacts held in the insulative tongue portion. The contacts have four conductive contacts and a plurality of differential contacts for transferring differential signals located behind/forward the four standard USB contacts along a front-to-rear direction. The four conductive contacts are adapted for USB 2.0 protocol and the plurality of differential contacts are adapted for non-USB 2.0 protocol. The extension to USB is capable of mating with a complementary standard USB 2.0 connector and a non-USB 2.0 connector, alternatively.

Abstract: An electrical connector includes a housing member and a number of contacts attached to the housing member. The contacts include a number of first contacts and second contacts arranged side by side along a transverse direction, respectively. Each of the first and second contacts include a main portion, a contact portion and a bending portion extending from a lateral edge of the main portion. The bending portion has a narrow width in order to occupy small space of a rear wall of the housing member so that the rear wall of the housing member still has adequate area for mounting other components.

Abstract: A terminal arrangement in an electrical connector including: an array of terminal pairs arranged along a first direction, each terminal pair comprising a first terminal (5) and a second terminal (6), each of the first terminal and the second terminal having a portion angled toward the other terminal, a connecting end (51, 61) continuing the angled portion, and a terminating end (52, 62) opposite the connecting end, the connecting ends of the first and second terminals of each terminal pair being substantially aligned to each other in a second direction perpendicular to the first direction, the connecting end of the first terminal having a mating face (511) facing away from the second terminal, the connecting end of the second terminal having a mating face (611) facing toward the first terminal, the mating faces of the first and second terminals being spaced a distance from each other in the second direction.

Abstract: A connector assembly (100) includes a first connector (10) and a mating second connector (30). Each connector includes a number of leadframes (21, 41) stacked one by one. Each leadframe has a first leadframe housing (211, 411) and a second leadframe housing (214, 414) attached to the first leadframe housing. Each connector includes an array of first terminals (5) and an array of second terminals (6) respectively mounted along the second and the first leadframe housings, and a pair of latching members (25, 45) mounted at opposite sides of the leadframes together with the first and second terminals to tie the plurality of stacked leadframes as a whole.

Abstract: An electrical connector includes an insulative housing, a plurality of first and second contacts retained in the insulative housing and a metallic ground. Each first contact comprises a first contact portion and a first mounting portion. Each second contact comprises a second contact portion and a second mounting portion. The first and second mounting portions are respectively arranged in first and second rows. The second contacts comprise a grounding contact. The ground piece comprises an elastic contact beam for abutting against the grounding contact so that the surface of the grounding contact is expanded. As a result, cross-talk occurred between the contacts can be decreased.

Abstract: A signal detection circuit is used for detecting signal squelch of a differential input signal to generate a corresponding digital output signal. The signal detection circuit includes: a reference voltage generator for generating a reference voltage of which the common mode voltage tracks the common mode voltage of the input signal; a real-time signal judgment circuit, real-time rectifying and amplifying a difference between the input signal and the reference voltage; and a deglitch circuit, sampling and/or amplifying an output signal of the real-time signal judgment circuit, and transforming sampling results into the digital output signal to reflect signal squelch of the differential input signal.

Abstract: An electrical connector includes an electrical receptacle and an electrical plug for mating with the electrical receptacle. The electrical receptacle includes a first port, a second port communicating with the first port. The second port can accommodate a standard B-type USB 2.0 plug. The first and the second ports can be combined to receive the electrical plug for high-speed signal transmission. The second port comprises a plurality of power contacts for voltage transmission.

Abstract: An electrical connector includes an insulative housing, a plurality of first and second contacts retained in the insulative housing and a metallic ground. Each first contact comprises a first contact portion and a first mounting portion. Each second contact comprises a second contact portion and a second mounting portion. The first and second mounting portions are respectively arranged in first and second rows. The second contacts comprise a grounding contact. The ground piece comprises an elastic contact beam for abutting against the grounding contact so that the surface of the grounding contact is expanded. As a result, cross-talk occurred between the contacts can be decreased.

Abstract: A flash memory device includes a control board with a circuit board and a plug connecting with the circuit board, and a case enclosing the control board. The circuit board has two opposite surfaces. The plug includes an insulative housing and a number of contacts retained therein. The insulative housing has a tongue extending in a front to back direction. The contacts include a number of first contacts and a number of second contacts. Each first contact has a nonelastic contact portion and a tail portion arranged on the circuit board. Each second contact has an elastic contact portion located behind the nonelastic contact portion along the front to back direction and a tail portion arranged on the circuit board.

Abstract: A method of evaluating disease severity is disclosed. The method uses physiological parameters and a historical database of diseases to determine a disease presented by the physiological parameters, to evaluate the disease severity and developing tendency, and to determine a suggested handling order when multiple diseases occur at the same time. The method provides a training stage and an executing stage. The training stage includes obtaining historical disease data from the historical database of diseases, and establishing a most-suited math model for the disease. The executing stage includes normalizing physiological parameters, calculating a strength value of the disease, and calculating a priority value based on the strength value of the disease and a probability value of the disease being selected in order to determine the suggested handling order. A system of evaluating disease severity is also disclosed therein.