Abstract: An electrostatic discharge (ESD) protection circuit, suitable for an input stage circuit including a first N channel metal oxide semiconductor (NMOS) transistor, is provided. The ESD protection circuit includes an P channel metal oxide semiconductor (PMOS) transistor and an impedance device, in which the PMOS transistor has a source coupled to a gate of the first NMOS transistor, and a drain coupled to a source of the first NMOS transistor, and the impedance device is coupled between a gate of the PMOS transistor and a first power rail to perform a initial-on ESD protection circuit. The ESD protection circuit formed by the PMOS transistor and the resistor is capable of increasing the turn-on speed of the ESD protection circuit and preventing the input stage circuit from a CDM ESD event.

Abstract: A sensing method and circuit for a capacitive touch panel sense the capacitance variation of a lateral capacitor formed at the intersection of two traces of the capacitive touch panel, to distinguish a real point from a ghost point. A sensing cycle includes two non-overlapping clock phases. In the first clock phase, the voltages across the lateral capacitor and across a sensing capacitor are set. In the second clock phase, the voltage at a first terminal of the lateral capacitor is changed, and a second terminal of the lateral capacitor is connected to a first terminal of the sensing capacitor, causing a voltage variation at a second terminal of the sensing capacitor. This voltage variation is used to determine whether the intersection is touched. The sensing method and circuit reflect the status of the lateral capacitor in real-time and prevent the location of the touch point from being misjudged.

Abstract: An optical fiber connector includes a shell, a lens and a strengthening unit. The shell includes a blind hole extended along a first direction for receiving a fiber and a through hole communicated with the blind hole and extended along a second direction perpendicular to the first direction. The lens is formed on the shell to align with a bottom of the blind hole. The lens is capable of optically coupling with the fiber in the blind hole. The strengthening unit is formed in the through hole.

Abstract: A pneumatic spanner structure includes a head body, a link bevel gear unit, a hit unit and a driving handle. A driving motor axle portion at an open end of the driving handle drives a motor link bevel gear post and a hit unit link bevel gear plate of the link bevel gear unit. The hit unit link bevel gear plate links the hit unit. The link bevel gear unit enhances and transmits the force to the hit unit. The hit unit applies the acting force on a workpiece. The hit unit doesn't need a buffer space for actuation and the force is indirect. The link bevel gear unit is a deceleration device to extend the service life of the whole structure. The output force is more powerful than the prior art, providing a stable and compact structure.

Abstract: An equalized capacitive touchpad and a touch positioning method for a capacitive touchpad use an equalizer to correct a sensed value detected from a sensing line of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the sensing line. Thus, the sensed values generated from different positions along a sensing line are equalized, and the touch positioning accuracy of the capacitive touchpad is improved.

Abstract: An electrostatic discharge (ESD) protection circuit, suitable for an input stage circuit including a first N channel metal oxide semiconductor (NMOS) transistor, is provided. The ESD protection circuit includes an P channel metal oxide semiconductor (PMOS) transistor and an impedance device, in which the PMOS transistor has a source coupled to a gate of the first NMOS transistor, and a drain coupled to a source of the first NMOS transistor, and the impedance device is coupled between a gate of the PMOS transistor and a first power rail to perform a initial-on ESD protection circuit. The ESD protection circuit formed by the PMOS transistor and the resistor is capable of increasing the turn-on speed of the ESD protection circuit and preventing the input stage circuit from a CDM ESD event.

Abstract: The disclosure relates to a load-adaptive bioelectrical current stimulator, which comprises a current output module, an adaptation module and a control module. The current output module generates a stimulus current to an electrode. The adaptation module detects the electrical status of the stimulus current passing through the electrode and generates a feedback signal to the control module. According to the feedback signal, the control module controls the current output module to stabilize the output status of the stimulus current adaptively. Thereby, the load-adaptive bioelectrical current stimulator can use the feedback control mechanism to regulate the value of the stimulus current to adapt to variation of load impedance.

Abstract: An exemplary LED module includes a ceramic substrate, a heat spreader, a heat sink, an LED die, and a packaging layer. The substrate defines a hole extending therethrough from a top side to a bottom side thereof. The heat spreader is disposed in the hole with a top side thereof substantially coplanar with the top side of the substrate. An outer circumferential surface of the heat spreader contacts an inner circumferential surface of the substrate around the hole. The heat sink is attached to the top sides of the substrate and the heat spreader. The LED die is attached to a bottom side of the heat spreader, and the packaging layer encapsulates the LED die.

Abstract: A representative electrostatic discharge (ESD) protection circuit includes a silicon-controlled rectifier (SCR) that is electrically coupled to the output of a power amplifier; an ESD detection circuit that triggers the SCR responsive to detect an electrostatic discharge on an ESD bus; and an ESD clamp circuit that is coupled to the first voltage line.

Abstract: A front-end signal detector and a method for improving noise immunity of a capacitive touch sensor start counting a preset time to trigger an interrupt signal responsive to a positive or negative edge of a periodic noise, to break the path through which a demodulated signal comes into a low-pass filter, to prevent noise from accumulating in the low-pass filter, and consequently mitigate the influence of the noise on the detection signal generated by the front-end signal detector.

Abstract: The disclosure relates to a current stimulator, which comprises a high voltage output module, a voltage control module and a charge pump module. The high voltage output module includes a plurality of stacked transistors, and receives an input control signal able to turn on/off the current stimulator and a first voltage. A second voltage is generated by adding the voltages output by all the transistors to the first voltage and then output to the voltage control module. The voltage control module outputs a voltage control signal able to stabilize the stimulus current for the load according to the second voltage and the load impedance variation. The charge pump regulates the first voltage according to the voltage control signal, and outputs the regulated first voltage to the high voltage output module. Thereby, the current stimulator can adaptively stabilize the stimulus current, responding to load impedance variation.

Abstract: An electrostatic discharge protection circuit includes an input node coupled to receive an input signal and an output node coupled to output the input signal to an internal circuit. A first inductor is coupled to the input node and to the output node, and a second inductor is coupled to the output node and to a first power supply node through a resistance. A plurality of protection devices are coupled to the first and second inductors and are disposed in parallel with each other.

Abstract: Connection establishing management methods for traversing network address translation (NAT) routers and firewalls between network terminal devices to establish a connection channel therebetween for use in a network system including at least first, second and third network terminal devices and a traversal server are disclosed. First, when traversal server receives a call request of first and second network terminal devices, network topology levels of first and second network terminal devices are detected to detect whether first and second network terminal devices are located behind NAT router and/or firewall. Then, one of first and second network terminal devices or third network terminal device is selected according to the detection result such that selected network terminal device acted as proxy server for the traversal server to establish a connection channel corresponding to call request between first and second network terminal devices.

Abstract: Data management methods for use in a network system including at least first, second and third network terminal devices and traversal server are disclosed. First and second network terminal devices can traverse at least one NAT router and/or firewall to establish a connection channel between each other for data access through traversal server. The method includes the steps of: receiving first packet with first protocol format from first network terminal device; determining whether to perform protocol conversion operation; if so, obtaining a list of available network terminal devices, assigning first network terminal device from obtained list, converting first packet with first protocol format into second packet with second protocol format that is decodable by second network terminal device, and sending second packet to second network terminal device such that second network terminal device can obtain content of first packet by decoding second packet upon reception of second packet.

Abstract: An electrostatic discharge (ESD) clamp circuit is provided, which includes a plurality of identical module circuits. The anode of the first module circuit is coupled to the cathode of the ESD clamp circuit. The anode of each of the other module circuits is coupled to the cathode of the previous module circuit. The cathode of the last module circuit is coupled to the ground terminal of the ESD clamp circuit. Each module circuit includes a conduction path and a detection circuit. The detection circuit is coupled to the anode, the cathode and the conduction path of the module circuit. When the rising speed of the voltage at the anode of the module circuit surpasses a threshold value, the detection circuit makes the conduction path conducting.

Abstract: Self-triggered Multi-finger SCRs used in ESD protection circuitry capable of turning on all SCR fingers of the multi-finger SCRs include a first source, a second source, N SCR units, (N?1) diodes, and N resistors. Each of the N SCR units includes a first node, a second node coupled to the second source, and a trigger node. An nth diode of the (N?1) diodes is coupled between a first node of an nth SCR unit and a trigger node of an (n+1)th SCR unit. An nth resistor is coupled between the first node of the nth SCR unit and the first source, wherein n and N are integers. The (N?1) diodes can be replaced by directly coupled the first node of the nth SCR unit to the trigger node of the (n+1)th SCR unit when a trigger pulse is applied at the trigger node of a first SCR unit.

Abstract: An IC, a circuitry, and an RF BIST system are provided. The RF BIST system includes a test equipment, a module circuitry, and an IC. The IC is arranged to communicate with the module circuitry by an RF signal in response to a command signal from the test equipment, determine a test result by the RF signal, and report the test result to the test equipment, wherein the module circuitry is external to the IC and the test equipment.

Abstract: The disclosure relates to a load-adaptive bioelectrical current stimulator, which comprises a current output module, an adaptation module and a control module. The current output module generates a stimulus current to an electrode. The adaptation module detects the electrical status of the stimulus current passing through the electrode and generates a feedback signal to the control module. According to the feedback signal, the control module controls the current output module to stabilize the output status of the stimulus current adaptively. Thereby, the load-adaptive bioelectrical current stimulator can use the feedback control mechanism to regulate the value of the stimulus current to adapt to variation of load impedance.

Abstract: An electrostatic discharge (ESD) circuit, adaptive to a radio frequency (RF) device, which includes a RF circuit coupled between a VDD power rail and a VSS power rail and having a RF I/O pad, includes an ESD clamp circuit coupled between a VDD power rail node and the VSS power rail node and a LC-tank structure coupled between the VDD power rail node and the VSS power rail node and to the RF I/O pad. The LC-tank structure includes a first ESD block between the VDD power rail node and the RF I/O pad, and a second ESD block between the VSS power rail node and the RF I/O pad. At least one of the first and second ESD blocks includes a pair of diodes coupled in parallel with each other and an inductor coupled in series with one of the pair of diodes.

Abstract: An exemplary injection mold for manufacturing a fiber optic connector includes a first mold, a second mold, an insert, two first positioning bar, and four second positioning bars. The first mold and the second mold cooperatively define a mold cavity. The mold cavity includes two lens molding recesses. The two inserts are attached to the second mold and located in the mold cavity. A dimension of each second bar in cross section is substantially smaller than that of each first positioning bar. One first positioning bar and two second positioning bars are arranged around each insert to position the insert, such that the inserts is suspended in the mold cavity and precisely aligns with the respective molding recesses.