Patents by Inventor Chu Chang
Chu Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8787223Abstract: A system and method for distributing signals from a first communications network and a second communications network to a location, including a base transceiver station configured to receive a signal from the first communications network and convert the signal into an RF signal for transmission to a mobile terminal, the RF signal having an RF frequency above a threshold frequency, and a coupling module configured to: receive the RF signal from the base transceiver station and receive a data signal from the second communications network, the data signal having an RF frequency below the threshold frequency; combine the RF signal and the data signal into a combined signal with the RF signal and data signal each retaining their respective frequencies; and provide the combined signal over a coaxial cable link to the location.Type: GrantFiled: September 16, 2011Date of Patent: July 22, 2014Assignee: Rogers Communications Inc.Inventors: Lawrence Edward Watson, John Michael Chapeskie, Lawrence Tae Young Lee, Phillip Man Wai Chan, Phing Chu Chang
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Publication number: 20140199819Abstract: A method of fabricating a capacitor structure includes the following steps. Firstly, a substrate is provided. A first conductive layer, a first insulation layer, a second conductive layer and a second insulation layer are sequentially formed over the substrate. A hard mask material layer is formed on the second insulation layer. Then, the hard mask material layer is defined with a photo resist pattern, so that a hard mask is formed. After the photo resist pattern is removed, the second conductive layer is defined with the hard mask, so that a first electrode of the capacitor structure is formed.Type: ApplicationFiled: January 16, 2013Publication date: July 17, 2014Applicant: UNITED MICROELECTRONICS CORPORATIONInventor: Pao-Chu CHANG
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Patent number: 8774848Abstract: A method may include scheduling for the downlink control channel, by a first base station during a partial loading sub-frame, at least a first group of wireless communication devices present in the first cell, the first group of wireless communication devices comprising wireless communication devices determined by the first base station to be near an edge of the first cell. The method may additionally include scheduling for the downlink control channel, by the first base station during a normal loading sub-frame, at least one other group of wireless communication devices present in the first cell other than wireless communication devices in the first group of wireless communication devices, the at least one other group of wireless communication devices determined by the first base station to be in greater proximity to the first case station than wireless communication devices in the first class.Type: GrantFiled: October 11, 2011Date of Patent: July 8, 2014Assignee: Fujitsu LimitedInventor: Rui Chu Chang
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Publication number: 20140132477Abstract: A vertically interleaved in-building distributed antenna system is described. The in-building distributed antenna system includes a multiple-input and multiple-output (MIMO) radio. The MIMO radio includes a first branch connector and a second branch connector. The in-building distributed antenna system further includes a first branch transport medium coupled to the first branch connector and a second branch transport medium coupled to the second branch connector. The in-building distributed antenna system further includes a plurality of antennas. The plurality of antennas includes one or more first branch antennas coupled to the first branch transport medium and one or more second branch antennas coupled to the second branch transport medium. The first branch antennas are vertically interleaved with the second branch antennas in the structure.Type: ApplicationFiled: January 22, 2014Publication date: May 15, 2014Applicant: Rogers Communications Inc.Inventors: Phillip Man Wai CHAN, Marc-Eric Thomas DRAPER, Peng CHEN, Phing Chu CHANG
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Patent number: 8669916Abstract: A vertically interleaved in-building distributed antenna system is described. The in-building distributed antenna system includes a multiple-input and multiple-output (MIMO) radio. The MIMO radio includes a first branch connector and a second branch connector. The in-building distributed antenna system further includes a first branch transport medium coupled to the first branch connector and a second branch transport medium coupled to the second branch connector. The in-building distributed antenna system further includes a plurality of antennas. The plurality of antennas includes one or more first branch antennas coupled to the first branch transport medium and one or more second branch antennas coupled to the second branch transport medium. The first branch antennas are vertically interleaved with the second branch antennas in the structure.Type: GrantFiled: August 26, 2011Date of Patent: March 11, 2014Assignee: Rogers Communications Inc.Inventors: Phillip Man Wai Chan, Marc-Eric Thomas Draper, Peng Chen, Phing Chu Chang
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Publication number: 20130090143Abstract: A method may include scheduling for the downlink control channel, by a first base station during a partial loading sub-frame, at least a first group of wireless communication devices present in the first cell, the first group of wireless communication devices comprising wireless communication devices determined by the first base station to be near an edge of the first cell. The method may additionally include scheduling for the downlink control channel, by the first base station during a normal loading sub-frame, at least one other group of wireless communication devices present in the first cell other than wireless communication devices in the first group of wireless communication devices, the at least one other group of wireless communication devices determined by the first base station to be in greater proximity to the first case station than wireless communication devices in the first class.Type: ApplicationFiled: October 11, 2011Publication date: April 11, 2013Applicant: FUJITSU NETWORK COMMUNICATIONS, INC.Inventor: Rui Chu Chang
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Publication number: 20130070772Abstract: A system and method for distributing signals from a first communications network and a second communications network to a location, including a base transceiver station configured to receive a signal from the first communications network and convert the signal into an RF signal for transmission to a mobile terminal, the RF signal having an RF frequency above a threshold frequency, and a coupling module configured to: receive the RF signal from the base transceiver station and receive a data signal from the second communications network, the data signal having an RF frequency below the threshold frequency; combine the RF signal and the data signal into a combined signal with the RF signal and data signal each retaining their respective frequencies; and provide the combined signal over a coaxial cable link to the location.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: ROGERS COMMUNICATIONS INC.Inventors: Lawrence Edward Watson, John Michael Chapeskie, Tae Young Lawrence Lee, Phillip Man Wai Chan, Phing Chu Chang
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Publication number: 20130050054Abstract: A vertically interleaved in-building distributed antenna system is described. The in-building distributed antenna system includes a multiple-input and multiple-output (MIMO) radio. The MIMO radio includes a first branch connector and a second branch connector. The in-building distributed antenna system further includes a first branch transport medium coupled to the first branch connector and a second branch transport medium coupled to the second branch connector. The in-building distributed antenna system further includes a plurality of antennas. The plurality of antennas includes one or more first branch antennas coupled to the first branch transport medium and one or more second branch antennas coupled to the second branch transport medium. The first branch antennas are vertically interleaved with the second branch antennas in the structure.Type: ApplicationFiled: August 26, 2011Publication date: February 28, 2013Applicant: ROGERS COMMUNICATIONS INC.Inventors: Phillip Man Wai CHAN, Marc-Eric Thomas DRAPER, Peng CHEN, Phing Chu CHANG
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Patent number: 8295627Abstract: The present invention provides a circuit for controlling a color sequential liquid crystal display (LCD) and a method for controlling the same. The control circuit comprises a light-source driving circuit, a data driving circuit, and a scan driving circuit. The light-source driving circuit produces a driving signal for controlling the color sequential LCD to produce backlight with different colors. The data driving circuit produces a data signal and includes a plurality of data pulses. The scan driving signal produces a scan signal and includes a plurality of scan pulses corresponding to the plurality of data pulses, respectively. By controlling the pluralities of data pulses and scan pulses and the backlight, the color sequential LCD will display an image. The voltage levels of the pluralities of data pulses and scan pulses change according to different images. Thereby, power consumed by the control circuit can be reduced. In addition, color-mixing problems will be reduced according to the present invention.Type: GrantFiled: October 20, 2008Date of Patent: October 23, 2012Assignee: Sitronix Technology Corp.Inventors: Chih-Yu Lin, Chao-Chu Chang
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Patent number: 8290290Abstract: A control IC (integrated circuit) for color sequential liquid crystal displays (LCD) is revealed. The control IC includes an interface for receiving a command and at least one display data and a timing generator to generate a scan timing signal, a data timing signal, and a driving timing signal. According to the scan timing signal, a scan driving circuit generates a scan signal that is sent to the color sequential LCD. In accordance with the data timing signal, a data driving circuit receives the display data for generating a data signal sent to the color sequential LCD. According to the driving timing signal, a light-source driving circuit generates a plurality of driving signals sent to the color sequential LCD so as to generate a plurality of color backlights. In accordance with the scan signal, the data signal and the plurality of backlights, the color sequential LCD displays a frame.Type: GrantFiled: October 20, 2008Date of Patent: October 16, 2012Assignee: Sitronix Technology Corp.Inventors: Chin-Wei Chien, Ting-Long Kuo, Kai-Yi Wu, Chung-Yao Hu, Hong-Zhung Zhu, Chih-Yu Lin, Chao-Chu Chang, Chia-Jung Lin, Lung-Hui Wang
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Patent number: 8237933Abstract: The present invention relates to a method for image calibration and an apparatus for image acquiring. In the method for image calibration, the image formation position for an image acquiring unit of the apparatus is calibrated according to the relative location of the image acquiring unit to a objective lens of the apparatus, wherein the relative location is determined by calculating the focus index of the image acquired by the image acquiring unit so that a clear and sharp interferogram can be obtained for three dimensional surface profile measuring. In addition, it is possible to obtain a clear and sharp image without any interference fringe outside the coherent range by adjusting the image formation position, which is capable of being utilized for two dimensional defect detection and dimension measurement.Type: GrantFiled: July 6, 2011Date of Patent: August 7, 2012Assignee: Industrial Technology Research InstituteInventors: Jin-Liang Chen, Shih-Hsuan Kuo, Chung-Chu Chang
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Publication number: 20120025859Abstract: A combined probe head being disposed in a space transformer of a vertical probe card is provided, in which the combined probe head is used for differentiating or segmenting a layout area of the probes in the vertical probe card. The combined probe head may include a locating plate and sub-probe heads. The locating plate may include fixed portions. Each sub-probe head may include corresponding sub-dies and probes inserted between the sub-dies, and each sub-probe head is assembled and fixed in the corresponding fixed portion. Therefore, the layout area of the probes in the vertical probe card can be respectively differentiated or segmented from the sub-probe heads in order to avoid mutual interference under repair process. In addition, a related method for assembling and aligning the above mentioned combined probe head is provided.Type: ApplicationFiled: July 25, 2011Publication date: February 2, 2012Inventors: Chao-Ching HUANG, Wen-Chi Chen, Chiu-Chu Chang
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Patent number: 8063196Abstract: The invention provides a set of highly orthogonal six-code universal sequences for use in bDNA singleplex and multiplex nucleic acid hybridization assays. The six-code orthogonal sequences do not cross-hybridize and thus, minimize or eliminate the 3-mer cross-hybridization inherent in the second and third generation bDNA assays. The highly orthogonal universal sequences may be used in singleplex or multiplex bDNA assays quantitatively and qualitatively to determine mRNA levels in a sample; to screen for and genotype targets, such as viruses, that are present in low volumes in a sample; to screen for and genotype SNPs; and to measure changes in the amount of a gene in a sample such as when gene amplifications or deletions occur. The highly orthogonal universal sequences may also be used as universal capture probes to selectively bind assay components in a way that facilitates their further analysis.Type: GrantFiled: February 1, 2005Date of Patent: November 22, 2011Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Minxue Zheng, David Ahle, Brian Warner, Ming Wu, Chu-an Chang
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Publication number: 20110261362Abstract: The present invention relates to a method for image calibration and an apparatus for image acquiring. In the method for image calibration, the image formation position for an image acquiring unit of the apparatus is calibrated according to the relative location of the image acquiring unit to a objective lens of the apparatus, wherein the relative location is determined by calculating the focus index of the image acquired by the image acquiring unit so that a clear and sharp interferogram can be obtained for three dimensional surface profile measuring. In addition, it is possible to obtain a clear and sharp image without any interference fringe outside the coherent range by adjusting the image formation position, which is capable of being utilized for two dimensional defect detection and dimension measurement.Type: ApplicationFiled: July 6, 2011Publication date: October 27, 2011Applicant: Industrial Technology Research InstituteInventors: Jin-Liang Chen, Shih-Hsuan Kuo, Chung-Chu Chang
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Patent number: 8035820Abstract: A method for out-of-plane displacement detection is disclosed. The out-of-plane displacement is detected by analyzing all the fringe density indexes calculated using the frequency-domain information extracted from a series of interference images of the sample vibrating at different frequencies. The present invention further discloses a method and an apparatus for resonant frequency identification by detecting the peak value of all the fringe indexes calculated at different scanning frequencies. With the identified resonant frequency, the full-field vibratory surface profile of the sample in various resonance modes can be reconstructed.Type: GrantFiled: July 15, 2010Date of Patent: October 11, 2011Assignee: Industrial Technology Research InsituteInventors: Liang-Chia Chen, Chung-Chu Chang, Yao-Ting Huang, Jin-Liang Chen
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Patent number: 8005290Abstract: The present invention relates to a method for image calibration and an apparatus for image acquiring. In the method for image calibration, the image formation position for an image acquiring unit of the apparatus is calibrated according to the relative location of the image acquiring unit to a objective lens of the apparatus, wherein the relative location is determined by calculating the focus index of the image acquired by the image acquiring unit so that a clear and sharp interferogram can be obtained for three dimensional surface profile measuring. In addition, it is possible to obtain a clear and sharp image without any interference fringe outside the coherent range by adjusting the image formation position, which is capable of being utilized for two dimensional defect detection and dimension measurement.Type: GrantFiled: March 31, 2008Date of Patent: August 23, 2011Assignee: Industrial Technology Research InstituteInventors: Jin-Liang Chen, Shih-Hsuan Kuo, Chung-Chu Chang
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Patent number: 7965394Abstract: A method and apparatus for identifying dynamic characteristics of a vibratory object is provided in the present invention, in which a series of dynamic interference images of the vibratory object is acquired through a frequency sweeping procedure and a two-dimensional image scanning procedure. Thereafter, the acquired images are processed for obtaining the corresponding differential fringe density index by signal processing technique of band-pass filtering method so as to further identify the dynamic characteristics of the vibratory object.Type: GrantFiled: July 1, 2008Date of Patent: June 21, 2011Assignees: Industrial Technology Research Institute, National Taipei University of TechnologyInventors: Liang-Chia Chen, Chung-Chu Chang, Yao-Ting Huang, Jin-Liang Chen
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Publication number: 20110117915Abstract: A method for determining the speed of a wireless device includes the steps of receiving channel quality indicator data, determining the fast fading characteristics of the received channel quality indicator data, comparing the fast fading characteristics of the received channel quality indicator data against benchmark channel quality indicator data, and determining the speed of the wireless device based on the comparison. The channel quality indicator data is indicative of the signal quality at a wireless device. The benchmark data includes fast fading characteristics.Type: ApplicationFiled: November 19, 2009Publication date: May 19, 2011Applicant: Fujitsu Network Communications, Inc.Inventor: Rui Chu Chang
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Patent number: 7929044Abstract: An autofocus searching method includes the following procedures. First, focus values of images, which are acquired during the movement of the object lens, are calculated, in which the focus value includes at least the intensity value of the image derived from the intensities of the pixels of the image. Next, focus searching is based on a first focus-searching step constant and a first focus-searching direction, in which the first focus-searching step constant is a function, e.g., the multiplication, of the focus value and a focus-searching step size. If the focus searching position moves across a peak of the focus values, it is then amended to be based on a second focus-searching direction and a second focus-searching step constant, in which the second focus-searching step constant is smaller than the first focus-searching step constant, and the second focus-searching direction is opposite to the first focus-searching direction.Type: GrantFiled: December 12, 2007Date of Patent: April 19, 2011Assignee: Industrial Technology Research InstituteInventors: Jin-Liang Chen, Chung Chu Chang, Chi Hong Tung
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Publication number: 20100277744Abstract: A method for out-of-plane displacement detection is disclosed. The out-of-plane displacement is detected by analyzing all the fringe density indexes calculated using the frequency-domain information extracted from a series of interference images of the sample vibrating at different frequencies. The present invention further discloses a method and an apparatus for resonant frequency identification by detecting the peak value of all the fringe indexes calculated at different scanning frequencies. With the identified resonant frequency, the full-field vibratory surface profile of the sample in various resonance modes can be reconstructed.Type: ApplicationFiled: July 15, 2010Publication date: November 4, 2010Inventors: Liang-Chia CHEN, Chung-Chu Chang, Yao-Ting Huang, Jin-Liang Chen