Abstract:
The invention discloses a method and a module for measuring rotation and a portable apparatus comprising said module. The module of the present invention is adapted for measuring rotation of a target, and the module includes a first sensor, a second sensor and a processor. The first sensor is disposed at a first location of the target, for sensing a first centripetal acceleration and a first tangential acceleration when the target is rotated. The second sensor is disposed at a second location of the target, for sensing a second centripetal acceleration and a second tangential acceleration when the target is rotated. The processor is coupled to the first sensor and the second sensor, for receiving the first centripetal acceleration and the first tangential acceleration from the first sensor, receiving the second centripetal acceleration and the second tangential acceleration from the second sensor, and calculating the rotation angle of the target accordingly.
Abstract:
The present invention provides a Relay Node Placement Method in Wireless Body Sensor Network. It provides a sensor data collection location and a plurality of sensor locations. Then based on those sensor locations and their corresponding time delays, a sensor location data group is generated, then based on the sensor location data group, a set cover problem is set up. Through an approximation algorithm, within linear time, the solution of that set cover problem is then solved so as to decide the minimal quantity of the first relay nodes of the trunk of human body; moreover, based on a given human body model, a plurality of second relay node candidate locations, those first relay node and the sensor data collection location, a minimal spanning tree problem is set up so as to decide a plurality of second relay node locations.
Abstract:
An apparatus for molding optical fiber connector is provided. The optical fiber connector includes a main body. The main body has a blind hole for receiving an optical fiber two opposite surfaces being substantially parallel with the blind hole, and a lens portion aligned with the blind hole. The apparatus comprises a molding cavity and an insert for forming the blind hole. The molding cavity includes a central portion for forming the main body, a lens-forming portion for forming the lens portion, and two lateral portions for forming the corresponding surfaces. The molding cavity includes a first gate and a second gate for introducing molding material into the molding cavity. The first gate is located between the insert and one of the two lateral portions and the second gate is defined between the insert and the other one of the lateral potions.
Abstract:
An ESD protection circuit has a merged triggering mechanism. The ESD protection circuit comprises: an ESD detection circuit, for detecting an ESD voltage to generate a control signal; a first type ESD protection device, for outputting a first trigger current; a second type ESD protection device, for receiving a second trigger current; and a trigger circuit, for constituting a conductive path according to the control signal, such that the trigger circuit can receive the first trigger current from the first type ESD protection device and outputs the second trigger current to the second type ESD protection device.
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:
An exemplary cooling device includes a hollow cylinder and a number of fins. The hollow cylinder has a top end and an opposite bottom end. The fins are evenly distributed on an outer circumferentila surface of the hollow cylinder along radial directions. Each of the fins includes a first portion, a middle portion, and a second portion. A radial width of each fin measured along a direction perpendicular to a center axis of the hollow cylinder gradually decreases along each of the first and second portions toward the middle portion.
Abstract:
For object detection, a two-step group scan to the traces of a capacitive touch sensor is performed, thereby dramatically shortening the overall scanning time and reducing noise effect. After all the traces are scanned by the pre-scan step to find out the trace of a touch point, the trace of the touch point and traces adjacent thereto are scanned by the re-scan step for more accurate positioning of the touch point.
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:
A laser power control system and related method for reducing a settling time in a target laser power transition are disclosed. The laser power control system includes a state decision circuit, for generating a state decision signal according to a selected operational state of a target circuit; a plurality of buffers, for storing a plurality of control data corresponding to a plurality of candidate operational states of the target circuit respectively; and a multiplexer, coupled between the state decision circuit and the buffers, for coupling a selected buffer of the buffers and the target circuit according to the state decision signal for outputting a control datum stored in the selected buffer to the target circuit.
Abstract:
The present invention discloses a coupled waveguide-surface plasmon resonance biosensor, comprising: a grating layer formed of a transparent material, the grating layer comprising a first periodic grating structure; a waveguide layer formed on the first periodic grating structure, the refractive index of the waveguide layer being larger than the refractive index of the grating layer; a plasmon resonance layer formed on the waveguide layer, capable of being optically excited to cause a plasmon resonance wave; and a ligand layer formed on the plasmon resonance layer; capable of being bound to react with receptors of a sample to be tested.