Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Chih-Yuan Chen
Chih-Yuan Chen, Hsinchu City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090002049 | Voltage Output Device for an Electronic System - The present invention discloses a voltage output device for an electronic system, for transforming an input voltage for generating an output voltage for a load, which includes a first node, a second node, a third node, a first transistor, a second transistor, a first driving unit, a second driving unit, a control unit, a first diode, an inductor, a first capacitor, and a boost circuit. | 01-01-2009 |
| 20090002050 | Voltage Output Device for an Electronic System - The present invention discloses a voltage output device for an electronic system, for transforming an input voltage for generating an output voltage for a load, which includes a first transistor, a second transistor, a first driving unit, a second driving unit, a control unit, a diode, an inductor, a first capacitor, and a boost circuit. The boost circuit includes a level shifter, a third transistor, and a second capacitor. Whether the third transistor | 01-01-2009 |
| 20100315047 | Control Device for a Multi-phase DC-DC Converter and Related Multi-phase DC-DC Converter - A control device for a multi-phase DC-DC converter is disclosed. The multi-phase DC-DC converter includes a plurality of converting channels. The control device includes an error amplifier for comparing a feedback signal of the multi-phase DC-DC converter and a reference signal to generate a comparison result, a main comparator for comparing the comparison result and a first sawtooth signal corresponding to a first converting channel of the plurality of converting channels to generate a first PWM signal, and at least one computing module each corresponding to one of the plurality of the converting channels, for generating a PWM signal according to the comparison result, a corresponding sawtooth signal, a corresponding sensing signal, and a sensing signal corresponding to a previous converting channel of the converting channel to control the converting channel. | 12-16-2010 |
Chih-Yuan Chen, Changhua County TW
| Patent application number | Description | Published |
|---|---|---|
| 20100202267 | TRACK DETERMINATION - A light beam is scanned on a track of a recording medium, the track having a first track region and a second track region, each track region having a physical property that has recurring deviations. A wobble signal is derived from the light beam, the wobble signal having information associated with the recurring deviations. Whether the light beam is at the first track region or the second track region is determined based on a frequency, a period, or a pulse width of the wobble signal. | 08-12-2010 |
| 20100214899 | High Frequency Modulation of a Light Beam in Optical Recording - An optical storage system modulates a laser beam based on a high frequency modulation (HFM) signal and a pattern to be recorded on an optical storage medium. At least one of an amplitude and a frequency of the HFM signal is adjusted when using the light beam to record the pattern on the optical storage medium or read data from the medium. | 08-26-2010 |
Chih-Yuan Chen, Kaohsiung City TW
| Patent application number | Description | Published |
|---|---|---|
| 20100164769 | SIGMA-DELTA MODULATOR ARCHITECTURE CAPABLE OF AUTOMATICALLY IMPROVING DYNAMIC RANGE METHOD FOR THE SAME - The present invention discloses a sigma-delta modulator architecture capable of automatically improving dynamic range and a method for the same. Based on the concept that different dynamic ranges of a sigma-delta modulator can be obtained via adjusting the signal power gain thereof, the present invention provides a novel algorithm to implement an automation program. The present invention finds out several sets of dynamic-range curves to improve the overall dynamic range. Via a high-level sigma-delta modulator architecture, the present invention can calculate the required feedforward coefficients. Further, the present invention install in the sigma-delta modulator architecture with four additional components, including a peak detection unit, a comparator unit, a digital coefficient control unit and a switch unit, to dynamically detect the output of the sigma-delta modulator and dynamically modify the feedforward coefficient of the sigma-delta modulator. Thus is extended the dynamic range of the sigma-delta modulator. | 07-01-2010 |
Chih-Yuan Chen, Hsin-Chu City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090034378 | Method for Data Access and Optical Data Accessing Apparatus Therefor - An optical data accessing apparatus and method for changing the access from a first data layer to a second data layer of an optical storage medium are provided. The first data layer corresponds to a first SAC value, while the second data layer corresponds to a second SAC value. A processor of the optical data accessing apparatus is adapted for: (1) generating and sending a focus off signal to a pickup control unit to disable focus control; (2) generating a target value for an SAC to adjust an SAC value from the first SAC value to the target value, wherein the target value is between the first SAC value and the second SAC value; and (3) generating and sending a focus activation signal to the pickup control unit to re-enable the focus control to focus on the second data layer while the SAC value reaches the target value. | 02-05-2009 |
| 20090180362 | Method and Apparatus for Deciding Spherical Aberration Compensation Value - A method and an apparatus for deciding a spherical aberration compensation (SAC) value for an optical storage medium are provided. The optical storage medium comprises at least one recording layer and a cover layer. The SAC value is suitable for a selected one of the at least one recording layer. First, a focus search on the optical storage medium is performed to derive a focus error (FE) signal in response to a testing SAC value. Then, a center level and a center basis corresponding to the testing SAC value according to the FE signal is determined. The SAC value according to the center level, the center basis, and the testing SAC value is also determined. When the center level and the center basis are equal, the SAC value is determined to be the testing SAC value. | 07-16-2009 |
| 20100157783 | LAND/GROOVE TRACK AND PICKUP HEAD MOVEMENT DIRECTION DETECTION - A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal. | 06-24-2010 |
Chih-Yuan Chen, Yangmei Town TW
| Patent application number | Description | Published |
|---|---|---|
| 20090262526 | White Light Emitting Diode Module - The white LED module includes a packaging housing having a containing chamber, an LED chipset disposed in the containing chamber, and a shared flat wavelength-converting structure disposed on the packaging housing. The LED chipset could illuminate an original light with at least two wavelengths. The original light may be diffused with the shared flat wavelength-converting structure and may be partially converted into a converted light with the shared flat wavelength-converting structure. The converted light and the original light are mixed to form a white light. | 10-22-2009 |
| 20100033947 | Enhanced Wavelength-Converting Structure - An enhanced wavelength-converting structure is disclosed. The enhanced wavelength-converting structure includes a substrate, a wavelength-converting layer arranged next to the substrate, and a wavelength-selective reflecting layer arranged next to the wavelength-converting layer. The wavelength-converting layer converts the first light into the second light. A part of the second light radiating backward to the light source is further reflected toward the substrate by the wavelength-selective reflecting layer to form the enhanced second light by combining with another part of the second light radiating toward the substrate. | 02-11-2010 |
Chih-Yuan Chen, Chu-Pei City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090185462 | Focus Controller and Focus Control Method - A focus controller and a focus control method are provided. The method allows the optical access apparatus focus from a current data layer onto a target layer. Each of the current layer and the target layer corresponds to a Spherical Aberration Compensation (SAC) value and a focus error related parameter. The method adjusts the SAC value in use to a temporary SAC value, adjusts the focus error related parameter in use to a temporary focus error related parameter, focuses on the target layer, adjusts the focus error related parameter in use to the focus error related parameter corresponding to the target layer, and adjusts the SAC value in use to the focus error related parameter corresponding to the target layer. | 07-23-2009 |
Chih-Yuan Chen, Yilan County TW
| Patent application number | Description | Published |
|---|---|---|
| 20090109762 | METHOD FOR PROGRAMMING NON-VOLATILE MEMORY - A method for programming non-volatile memory utilizes substrate hot carrier effect to conduct programming operations. A forward bias voltage is applied between an N-type well region and a P-type well region so as to inject electrons in the N-type well region into the P-type well region. After that, the electrons are accelerated by a depletion region established by a voltage applied to a source region and a drain region, and a vertical electrical field established between a control gate and the P-type well region further forces the electrons to be injected into a charge storage layer. Since the present invention adopts the substrate hot carrier effect to inject carriers into the charge storage layer, the required program operation voltage is low, which benefits to save power consumption and enhance the reliability of the device. | 04-30-2009 |
Chih-Yuan Chen, Kaohsiung TW
| Patent application number | Description | Published |
|---|---|---|
| 20080316685 | ELECTRONIC CASING AND METHOD OF MANUFACTURING THE SAME - An electronic casing and a method of manufacturing the same are provided. The method includes the following steps. Step (a): a metal laminate and a die of a predetermined shape are provided. The metal laminate comprises a metal top layer and a metal bottom layer that are bonded by interface atom diffusion. Step (b): the metal laminate is processed to form a casing blank by using the die, and the casing blank has at least one turning portion. Step (c): a profiler of a predetermined shape and an electromagnetic forming device are provided. Step (d): the casing blank is attached to the profiler, and the electromagnetic forming device is disposed at a position corresponding to the turning portion. Step (e): the electromagnetic forming device is activated, so that the casing blank has a shape corresponding to the predetermined shape of the profiler. | 12-25-2008 |
Chih-Yuan Chen, Tianjihong Township TW
| Patent application number | Description | Published |
|---|---|---|
| 20080232206 | TRACK DETERMINATION - A light beam is scanned on a track of a recording medium, the track having a first track region and a second track region, each track region having a physical property that has recurring deviations. A wobble signal is derived from the light beam, the wobble signal having information associated with the recurring deviations. Whether the light beam is at the first track region or the second track region is determined based on a frequency, a period, or a pulse width of the wobble signal. | 09-25-2008 |
Chih-Yuan Chen, Hsinchu Hsieh TW
| Patent application number | Description | Published |
|---|---|---|
| 20110171426 | HARD WATER-REPELLENT STRUCTURE AND METHOD FOR MAKING THE SAME - A hard water-repellent structure and a method for fabricating the same are provided. The method adopts an atmospheric pressure plasma deposition (APPD) technique to form a hard coating having a rough surface on a substrate, and form a water-repellent coating on the rough surface. Because the hard water-repellent structure includes the hard coating and the water-repellent coating, hardness, abrasion-resistance, transparency and hydrophobicity of the hard water-repellent structure are improved. The hard water-repellent structure protects the substrate from friction. Moreover, because the disclosure adopts the APPD technique to form the hard water-repellent structure, the cost of production is reduced dramatically. Thus, the disclosure can solve drawbacks of prior art. | 07-14-2011 |