Yuwen
Yuwen Li, Montreal CA
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20140257542 | SYSTEM AND METHOD FOR POSITIONING ERROR COMPENSATION DURING MANUFACTURING OF COMPLEX-SHAPED GAS TURBINE ENGINE PARTS - A system and method for error compensation in positioning a complex-shaped gas turbine engine part during manufacturing thereof with a machine. Theoretical measurements for a plurality of control points on the part are first retrieved. Actual measurements for the control points are then acquired in a coordinate system of the machine. If an error between the actual and theoretical measurements is beyond a tolerance, a transformation matrix is computed. The transformation matrix represents a transformation to be applied to the coordinate system to adjust a pose thereof for compensating the error. The transformation matrix may be computed and applied to the coordinate system iteratively until the actual measurements are brought within tolerance. A machining program may then be generated for manufacturing the part accordingly. | 09-11-2014 |
20150273640 | POSITIONING ASSEMBLY AND METHOD - A positioning assembly for positioning a rotary part to be machined includes a machining fixture and a positioning device having an elastically-deformable diaphragm concentrically mounted to the fixture and defining an annular loading zone which receives an axial force substantially parallel with a center axis of the fixture. The positioning device has circumferentially-spaced engaging segments, fixed to the diaphragm and extending away therefrom, which have contact members that are displaced radially to frictionally engage the rotary part when the axial force is applied to the loading zone of the diaphragm. | 10-01-2015 |
Yuwen Pan, Shanghai CN
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20140349570 | APPARATUS AND A METHOD FOR A MOBILE RELAY STATION TRANSCEIVER AND A BASE STATION FOR A MOBILE COMMUNICATION SYSTEM - Embodiments relate to an apparatus ( | 11-27-2014 |
20150011158 | APPARATUS, METHOD, AND COMPUTER PROGRAM FOR A MOBILE RELAY STATION TRANSCEIVER, SYSTEM, AND MEANS FOR MASS TRANSPORTATION - Embodiments provide an apparatus, a method, and a computer program for a mobile relay station transceiver. Embodiments may further provide a system and means for mass transportation. An apparatus ( | 01-08-2015 |
Yuwen Wang, Hayward, CA US
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20140266217 | METHOD AND SYSTEM FOR DETECTING LED SHORT CIRCUIT IN LED STRINGS OR DETECTING MATCHING AMONG LED STRINGS - This specification relates to a method and a system for detecting light emitting diode (LED) short circuit in a plurality of LED strings or detecting matching among the plurality of LED strings, wherein one end of each of the plurality of LED strings is connected to a same output end of a power supply, and the other end is respectively connected to a corresponding switch. According to the present invention, first current of each of LED strings is obtained when the output end of the power supply outputs a first voltage; differences between the minimum of the first currents of LED strings and other first currents are calculated; the differences are compared with a comparing threshold; it is determined that the LED strings corresponding to the other currents for which differences are larger than the comparing threshold include short circuit or mismatch with the LED string corresponding to the minimum current. Accordingly, it is possible to reduce the number of pins and area of a control chip. | 09-18-2014 |
20150076999 | Modifying Duty Cycles of PWM Drive Signals to Compensate for LED Driver Mismatches in a Multi-Channel LED System - An LED (Light Emitting Diode) controller comprises a first LED driver to generate a first PWM (Pulse Width Modulation) drive signal to turn on or turn off, respectively, a first current through a first LED string. Additionally, the LED controller comprises a compensation circuit to generate the first PWM drive signal responsive to a first duty set signals. The first duty set signal is indicative of a first duty cycle set for the first PWM drive signal. The compensation circuit receives a first feedback signal indicative of the first current, generates a first error signal indicative of a difference between a first predetermined target value and the first feedback signal, and generates the first PWM drive signal to have the first duty cycle corresponding to the first duty set signal and further adjusted by the first error signal. | 03-19-2015 |
20160081148 | LED DRIVER WITH COMPREHENSIVE FAULT PROTECTIONS - The embodiments disclosed herein describe a set of fault detection circuits for LED circuits in an LED channel. A first fault detection circuit is configured to detect a short fault across one or more LEDs. A second fault detection circuit is configured to detect an open fault across an LED. A third fault detection circuit is configured to detect a short across an LED channel transistor. A fourth fault detection circuit is configured to detect an LED channel sense resistor open fault. A fifth fault detection circuit is configured to detect if the LED channel is being intentionally unused. These fault detect circuits can be implemented in a fault detection integrated circuit coupled to the LED channel. | 03-17-2016 |
Yuwen Ye, Shenzhen CN
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20160029053 | Method for transmitting media data and virtual desktop server - Disclosed is a method for transmitting media data, comprises: acquiring streaming media data of a media file that a terminal requests to play; when it is determined that the terminal supports a media format of the streaming media data, sending the streaming media data to the terminal, and the terminal playing the streaming media data; when it is determined that the terminal does not support the media format of the streaming media data requested to be played, converting the media format of the streaming media data into a media format supported by the terminal; and sending the converted streaming media data to the terminal, and the terminal directly playing the converted streaming media data. Also disclosed is a virtual desktop server. The present invention can effectively save the CPU resources of the virtual desktop server. | 01-28-2016 |
20160029079 | Method and Device for Playing and Processing a Video Based on a Virtual Desktop - Provided a method and device for playing and processing a video based on a virtual desktop. The method comprises: a terminal receives a original code stream of a video file to be played currently, wherein the original code stream is sent to the terminal by a virtual desktop system after the virtual desktop acquires the original code stream; and the terminal plays the video file according to the original code stream. The disclosure avoids or reduces the occupation of Central Processing Unit (CPU) resources of a virtual machine host, and achieves smooth playback of video files. | 01-28-2016 |
Yuwen Zhang, Beijing CN
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20160055623 | METHOD AND DEVICE FOR CONTROLLING SCREEN ROTATION - A method for controlling screen rotation for use in a mobile terminal is provided. The method includes: when the mobile terminal enters a full-screen mode, locking a screen orientation of the mobile terminal, and acquiring an initial posture of the mobile terminal; monitoring a real-time posture of the mobile terminal in real time; and determining a screen rotation direction by comparing the real-time posture with the initial posture. | 02-25-2016 |
20160062581 | METHOD AND DEVICE FOR DISPLAYING FILE - The present disclosure relates to methods and devices for displaying a document, which pertain to the field of computer technology. The method includes: in a state where a target document is displayed on a screen, when it is detected that the screen is subjected to displacement, determining a direction of the displacement; and translating the target document on the screen according to the direction of the displacement. | 03-03-2016 |