Patent application number | Description | Published |
20090140782 | SPREAD SPECTRUM CLOCK GENERATING APPARATUS - A spread spectrum clock generating apparatus is disclosed. The spread spectrum clock generating apparatus includes a phase lock loop module and a spread spectrum module. The phase lock loop module is used for dynamically tuning frequency of an output clock. The spread spectrum module includes a counter, a plurality of delta-sigma counters and a data shifter. These delta-sigma counters accumulate input signals, and enable a first overflow signal while accumulation of a last stage delta-sigma counter is overflowed. The frequency of the output clock can be tuned dynamically according to the first overflow signal, and the spectrum of the output clock can be spread. | 06-04-2009 |
20090141595 | TIME-TO-DIGITAL CONVERTER APPARATUS - A time-to-digital converter apparatus including a delay phase-locked loop, a subtracter, a multi-phase detector and a Vernier detector is disclosed. The delay phase-locked loop herein includes digital delay components for producing counting signals. The multi-phase detector includes digital delay components for producing delay outputs according to the counting signals and thereby detecting a pulse input signal. The Vernier detector includes digital delay components for detecting the remainder of the pulse input signal according to the difference between the delay outputs produced by the subtracter. | 06-04-2009 |
20090146625 | VOLTAGE GENERATING APPARATUS - A voltage generating apparatus including a voltage generator and a current splitter is provided. The voltage generator has an output node, and generates a first output voltage from the output node. The first output voltage rises when the temperature rises and the current flowing from the output end of the voltage generator is fixed. And the first output voltage drops when the temperature is fixed and the current flowing from the output node of the voltage generator rises. The current splitter is used for increasing the current flowing through the current splitter when the temperature rises. Therefore, the rise of the first output voltage of the voltage generator will be restrained, and the temperature compensation can be achieved. | 06-11-2009 |
20090146727 | VOLTAGE GENERATING APPARATUS - A voltage generating apparatus including a current source, a first voltage source, a second voltage source, a first differential pair, a second differential pair, a voltage divider and a current mirror is provided. The voltage divider is used for reducing a voltage with a negative temperature coefficient, so as to reduce the amplification ratio of the voltage with a positive temperature coefficient used for compensating the negative temperature coefficient. | 06-11-2009 |
20090212821 | BULK INPUT CURRENT SWITCH LOGIC CIRCUIT - A current switch logic circuit is disclosed. The circuit includes a current sense amplifier formed bit a first transistor to a fifth transistor, and a logic tree. The logic tree is used to generate a first current and a second current. The current sense amplifier generates a first output signal and a second output signal according to the first current and the second current. | 08-27-2009 |
20090212822 | BULK INPUT CURRENT SWITCH LOGIC CIRCUIT - A current switch logic circuit is disclosed. The circuit includes a current sense amplifier formed by a first transistor to a fifth transistor, and a logic tree. The logic tree is used to generate a first current and a second current. The current sense amplifier generates a first output signal and a second output signal according to the first current and the second current. | 08-27-2009 |
20100068454 | RUBBER DOME AND MANUFACTURING METHOD THEREOF - A rubber dome is disclosed in this invention. The rubber dome includes a rubber body and a hole. When the bottom of a first mold and the top of a second mold are closely connected, a specific space is generated between them. After a rubber material is poured into the specific space, the rubber material will form the rubber body. When the first mold and the second mold are separated, the hole will be automatically formed on the top of the rubber body. | 03-18-2010 |
20100150213 | SIGNAL TRANSCEIVER APPARATUS AND SYSTEM - A signal transceiver apparatus suitable for a wired signal transceiver system includes a differential signal transmitter, an impendence matching control module and a signal receiver. The signal transmitter has an output terminal which is connected to a transceiver wire. The signal transmitter includes a first impendence tuner and is used to receive a control signal so as to tune impendence of the first impendence tuner according to the control signal. Moreover, the impendence matching control module generates the control signal according to a compare signal and a lock signal. Besides, the signal receiver generates the lock signal and the compare signal according to a compare result between a current flowing through the first impendence tuner and a reference current. | 06-17-2010 |
20100156678 | Gas Releasable Key Structure and Keyboard Structure Using the Same - A gas releasable key structure including a base, a thin-film circuit, a key cap and an elastic structure is disclosed. The elastic structure is disposed between the key cap and the thin-film circuit and includes a cap body, a ring-shaped flange, a motion pillar and a conductor. The cap body has a first opening and a second opening. The ring-shaped flange connects an edge around the first opening. The motion pillar in the cap body has a through hole, an upper surface and a lower surface. The through hole is extended to the upper surface from the lower surface, connecting the second opening. The conductor on the lower surface has an indent and a breach that connects the through hole. When the first opening is closed, the gas inside the cap body is dissipated to the exterior via the indent, the breach, the through hole and the second opening. | 06-24-2010 |
20100164562 | CLOCK GENERATOR, MULTIMODULUS FREQUENCY DIVIDER AND DETA-SIGMA MODULATER THEREOF - A clock generator is illustrated. The clock generator mentioned above includes a multimodulus frequency divider and a delta-sigma modulator. The multimodulus frequency divider is archived by switching the phase thereof. The multimodulus frequency divider increases the operating frequency of the clock generator effectively, and has a characteristic with half period resolution for reducing the jitter of an output clock signal when its spectrum is spread. Besides, the delta-sigma modulator increases the accuracy of the triangle modulation and reduces error of quantization by adding a few components therein. Thus, the clock generator could be expanded to a programmable clock generator. | 07-01-2010 |
20110068841 | High-resolution varactors, single-edge triggered digitally controlled oscillators, and all-digital phase-locked loops using the same - A digitally controlled oscillator (DCO) includes a pulse generator for generating a pulse signal upon an edge of a trigger signal, and at least one delay circuit coupled to delay the pulse signal generated by the pulse generator. The pulse generator is coupled to receive one of the delayed pulse signal from the at least one delay circuit and an enable signal as the trigger signal. A digitally controlled varactor (DCV) includes a transistor having a gate, a source, a drain, and a substrate, wherein at least one of the gate, the source, the drain, and the substrate is coupled to receive one of two or more voltages, wherein at least one of the two or more voltages is not a power supply voltage or ground. | 03-24-2011 |
20110150168 | CLOCK GENERATOR AND DETA-SIGMA MODULATER THEREOF - A clock generator is illustrated. The clock generator mentioned above includes a multimodulus frequency divider and a delta-sigma modulator. The multimodulus frequency divider is archived by switching the phase thereof. The multimodulus frequency divider increases the operating frequency of the clock generator effectively, and has a characteristic with half period resolution for reducing the jitter of an output clock signal when its spectrum is spread. Besides, the delta-sigma modulator increases the accuracy of the triangle modulation and reduces error of quantization by adding a few components therein. Thus, the clock generator could be expanded to a programmable clock generator. | 06-23-2011 |
20110156782 | ONION WAVEFORM GENERATOR AND SPREAD SPECTRUM CLOCK GENERATOR USING THE SAME - An onion waveform generator and a spread spectrum clock generator (SSCG) using the same are provided. The onion waveform generator includes a value generation unit and an accumulating unit. The value generation unit outputs a counting value. The accumulating unit accumulates the counting value to output a waveform value. The accumulating unit switches from an increasing mode to a decreasing mode if the waveform value is a third boundary value, and the accumulating unit switches from the decreasing mode to the increasing mode if the waveform value is a fourth boundary value. | 06-30-2011 |
20140275936 | WIRELESS INTRAOCULAR PRESSURE MONITORING DEVICE, AND DETECTING MODULE THEREOF - A wireless intraocular pressure monitoring device includes reflecting and detecting modules. The reflecting module includes a soft contact lens having a curvature corresponding to that of a cornea while worn. A metal layer is embedded in and deformable with the soft contact lens. The detecting module includes two waveguides, an oscillator, and a converting unit. The oscillator is operable to generate oscillation signals having a frequency dependent on an equivalent impedance of the waveguides such that the equivalent impedance corresponds to intraocular pressure. The converting unit is operable for receiving and converting the oscillation signals into an output signal corresponding to the intraocular pressure. | 09-18-2014 |