Patent application number | Description | Published |
20090033381 | PHASE LOCKED LOOP, VOLTAGE CONTROLLED OSCILLATOR, AND PHASE-FREQUENCY DETECTOR - A phase locked loop, voltage controlled oscillator, and phase-frequency detector are provided. The phase locked loop comprises a phase-frequency detector (PFD), a loop filter (LF), a voltage controlled oscillator (VCO), and a 3-stage frequency divider. The PFD receives a reference signal and a feedback signal to determine phase and frequency errors. The LF), coupled to the phase-frequency detector, filters the phase and frequency errors to generate a control voltage. The VCO, coupled to the loop filter, generates a VCO output signal according to the control voltage. The 3-stage frequency divider, coupled to the voltage controlled oscillator, divides the frequency of the VCO output signal 3 times to generate the feedback signal. | 02-05-2009 |
20110018596 | Phase Locked Loop and 3-Stage Frequency Divider - The phase locked loop has a phase-frequency detector (PFD), a loop filter (LF), a voltage controlled oscillator (VCO), and a 3-stage frequency divider. The PFD receives a reference signal and a feedback signal to determine phase and frequency errors. The LF), coupled to the phase-frequency detector, filters the phase and frequency errors to generate a control voltage. The VCO, coupled to the loop filter, generates a VCO output signal according to the control voltage. The 3-stage frequency divider, coupled to the voltage controlled oscillator, divides the frequency of the VCO output signal 3 times to generate the feedback signal. The 3-stage frequency divider comprises three cascaded frequency dividers with different rangers of operating frequencies. | 01-27-2011 |
20110018597 | Phase Locked Loop and Phase-Frequency Detector - The phase-frequency detector (PFD) includes a frequency detector (FD) arranged to receive orthogonal signal pairs of a reference signal and a feedback signal and estimate a frequency error between a reference signal and a feedback signal; a FD voltage-to-current converter arranged to convert the frequency error into a first current; a phase detector (PD) arranged to receive the orthogonal signal pairs and estimate a phase error between the reference signal and the feedback signal, and a PD voltage-to-current converter arranged to convert the phase error into a second current. | 01-27-2011 |
Patent application number | Description | Published |
20100219879 | PTAT Sensor and Temperature Sensing Method Thereof - A proportional to absolute temperature (PTAT) sensor is capable of reducing a sensing error resulted from a mismatch between circuit components. The PTAT sensor includes a control unit, a sensing unit and a calculation unit. The control unit generates a control signal. The sensing unit, comprising at least a pair of circuit components having a matching relationship, senses an absolute temperature under the first connection configuration and the second connection configuration respectively to generate a first voltage value and a second voltage value, wherein the first connection configuration and the second connection configuration are decided by interchanging the circuit connections of the pair of circuit components according to the control signal. And the calculation unit, coupled to the sensing unit, calculates a PTAT voltage value according to the first voltage value and the second voltage values. | 09-02-2010 |
20100295597 | MIXER WITH HIGH LINEARITY AND LOW OPERATING VOLTAGE - A mixer with high linearity and a low operating voltage is provided. The mixer includes a transconductor and a switch circuit. The transconductor receives a differential voltage signal and outputs a differential current signal accordingly. The transconductor includes a first resistor, a second resistor, a differential amplifier, a first current source and a second current source. The switch circuit includes a first switch, a second switch, a third switch, and a fourth switch. The first and second switches are coupled to a first input of the differential amplifier, while the third and fourth switches are coupled to a second input of the differential amplifier. The first and third switches are mutually coupled to provide an output of the mixer, while the second and fourth switched are mutually coupled to provide another output of the mixer. Each of the first, second, third and fourth switches determines whether to allow the differential current signal to pass through according to a differential control signal. | 11-25-2010 |
Patent application number | Description | Published |
20100123383 | DUAL-PURPOSE LIGHT-PENETRATING AND LIGHT-EMITTING DEVICE AND LIGHT-PENETRATIVE ILLUMINATING STRUCTURE - A dual-purpose light-penetrating and light-emitting device is provided. The dual-purpose light-penetrating and light-emitting device includes a first transparent substrate, a spacing sidewall, a second transparent substrate, and a light-penetrative illuminating structure. The spacing sidewall is disposed between the first transparent substrate and the second transparent substrate for configuring a hermetic space. The light-penetrative illuminating structure includes a cathode structure, an anode structure, a low pressure gas layer, and a patterned fluorescent layer. The low pressure gas layer is accommodated in the hermetic space. The cathode structure and the anode structure are oppositely disposed on the first transparent substrate and the second transparent substrate, respectively. The patterned fluorescent layer is positioned between the cathode structure and the anode structure, for allowing an ambient natural light penetrating therethrough. | 05-20-2010 |
20100141112 | ELECTRON EMISSION DEVICE AND METHOD OF PACKAGING THE SAME - An electron emission device including a first substrate, a second substrate, a gas, a sealant, and a phosphor layer is provided. The first substrate has a cathode thereon, and the cathode has a patterned profile. The second substrate is opposite to the first substrate and has an anode thereon. The sealant is disposed at edges of the first substrate and the second substrate to assemble the first and second substrates. The gas is disposed between the cathode and the anode and configured to induce a plurality of electrons from the cathode, wherein the pressure of the gas is between 10 torr and 10− | 06-10-2010 |
20100148657 | Plane light source - A plane light source is provided. The plane light source includes an anode layer, a cathode layer, a discharging gas, and at least one fluorescent layer. The discharging gas is between the anode layer and the cathode layer. The fluorescent layer is disposed on the anode layer and located between the anode layer and the cathode layer. In the plane light source, electrons is activated by discharge of the discharging gas and emitted from the cathode layer. The fluorescent layer is adapted for emitting a light when being bombarded by the electrons. | 06-17-2010 |
20110183576 | METHOD OF PACKAGING ELECTRON EMISSION DEVICE - An electron emission device including a first substrate, a second substrate, a gas, a sealant, and a phosphor layer is provided. The first substrate has a cathode thereon, and the cathode has a patterned profile. The second substrate is opposite to the first substrate and has an anode thereon. The sealant is disposed at edges of the first substrate and the second substrate to assemble the first and second substrates. The gas is disposed between the cathode and the anode and configured to induce a plurality of electrons from the cathode, wherein the pressure of the gas is between 10 torr and 10 | 07-28-2011 |
20110227498 | 3-DIMENSION FACET LIGHT-EMITTING SOURCE DEVICE AND STEREOSCOPIC LIGHT-EMITTING SOURCE DEVICE - A 3-dimension facet light-emitting source device including a transparent container, an anode plate, a cathode plate, a plurality of transparent plates and a low-pressure gas layer is provided. The transparent container has a sealed space. The transparent plates are disposed between the anode plate and the cathode plate, and have a fluorescent layer thereon respectively. The lower pressure gas layer is filled in the sealed space to induce electrons emitting from the cathode plate, and the electrons fly in a direction parallel to the transparent plates and hit each fluorescent layer to emit light, so as to form a set of 3-dimension facet patterns. | 09-22-2011 |
Patent application number | Description | Published |
20140070172 | ORGANIC LIGHT EMITTING DIODE LIGHT SOURCE DEVICE - An organic light emitting diode (OLED) light source device is provided, including a lower substrate, a plurality of OLED modules disposed on the lower substrate and arranged in a matrix, a bus circuit surrounding the OLED modules to form a mesh structure and connecting the OLED modules in parallel, and an upper substrate disposed on the OLED modules and the bus circuit. The bus circuit connects the OLED modules in parallel. Therefore, the OLED light source device can be arbitrarily cut into different shapes, and its service life and light emitting performance are not affected by the cutting. | 03-13-2014 |
20140070173 | CUTTABLE ORGANIC LIGHT EMITTING DIODE LIGHT SOURCE DEVICE WITH WIRELESS POWER TRANSMISSION - A cuttable organic light emitting diode (OLED) light source device is provided, including a lower substrate, a plurality of OLED modules disposed on the lower substrate and arranged in a matrix, a plurality of sensing electrodes disposed on respective OLED modules for sensing an external magnetic field in order to provide power to the OLED modules, and an upper substrate disposed on the OLED modules and the sensing electrodes. The present disclosure independently provides power to each OLED module through the sensing electrodes, and allows the cuttable OLED light source device with wireless transmission to arbitrarily cut into different shapes, so that the service life and light emitting performance are not affected by the cutting. | 03-13-2014 |