Patents by Inventor Yu-Cheng Chang
Yu-Cheng 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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Publication number: 20150144759Abstract: A 3d image photographing device is disclosed for producing a 3D image with enhanced stereoscopic effect. The device includes a first track, a second track, a slide carriage and a driving module. The first track couples with the second track. The first track includes a first slideway in an arc shape. The second track includes a second slideway in an arc shape, and a curvature of the second slideway is larger than a curvature of the first slideway. The slide carriage includes a base. A first sliding block is rotatably mounted to a surface of the base, and a groove is arranged on the surface. The first sliding block movably coupled to the second slideway. A positioning member couples with the groove, with the positioning member having a second sliding block movably coupled to the first slideway, and with the second sliding block connecting with a blocking portion received in the groove. A coupling portion is mounted to another surface of the base for coupling a camera.Type: ApplicationFiled: November 28, 2014Publication date: May 28, 2015Inventor: Yu-Cheng Chang
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Patent number: 9030178Abstract: A power converter used in the current control circuit and control method, consisting of a converter, a voltage divider circuit, a current sampling circuit, a first gain circuit, a differential amplifier, a second gain circuit, a multiplier, a saw tooth wave generator, a modulation comparator, and a driver. The invention samples inductor current through the current sampling circuit and generates the current sense signal, then processes again. With the differential amplifier, it compares the feedback voltage from the voltage divider circuit with the reference voltage, and the results along a modulation comparator output a drive signal to control the duty cycle in order to avoid the generation of inrush current. The present invention avoids inrush current caused by the large drive signal and achieves a good response rate and better system stability.Type: GrantFiled: August 26, 2013Date of Patent: May 12, 2015Assignee: Luxmill Electronic Co., Ltd.Inventors: Yu-Cheng Chang, Mao-feng Lan, Chung-hung Lin
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Patent number: 8998647Abstract: An electrical connector includes a fastening part, a connector body assembled under the fastening part and defining at least one receiving groove at a mating end thereof, a base board positioned under the connector body, and a shielding shell. The connector body and the base board can be firmly fastened in the shielding shell by means of the fastening part. At least one end edge of the shielding shell is bent inward to form a positioning tail positioned in the receiving groove to position the mating end of the connector body with a front face of the mating end being flush with the end edge of the shielding shell and a contact face of the connector body being substantially flush with a top edge of the positioning tail, so as to avoid the mating end of the connector body wrapping in use.Type: GrantFiled: May 24, 2013Date of Patent: April 7, 2015Assignee: Power Quotient International Co., Ltd.Inventors: Chia Hsin Tsai, Charles C. Lee, Yu Cheng Chang, Jen Fu Chen
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Patent number: 8982308Abstract: An active liquid crystal array device is provided. A gate control electrode is disposed on the first transparent conductive substrate, a first transparent insulation layer is disposed on the gate control electrode, a liquid crystal control electrode is disposed on the first transparent insulation layer, a second transparent conductive substrate which includes a transparent electrode and a second liquid crystal oriented layer, and a liquid crystal layer is disposed between the first liquid crystal oriented layer and a second liquid crystal oriented layer.Type: GrantFiled: March 14, 2013Date of Patent: March 17, 2015Assignee: National Chiao Tung UniversityInventors: Tai-Hsiang Jen, Chih-Wei Chen, Yu-Cheng Chang, Po-Yuan Hsieh, Yi-Pai Huang
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Patent number: 8876558Abstract: An electrical connector includes a base board having a plurality of first contact pads and second contact pads exposed on one end of the base board, a plurality of first terminals each having one end thereof connected with the corresponding first contact pad of the base board, a plurality of second terminals each having one end thereof arranged alternately with the first terminals and connected with the corresponding second contact pad of the base board, and an insulating housing having a window. The other end of the first terminal is slanted downward at an angle and then curved upward back to form a barb-like contact portion. The other end of the second terminal defines a contact protrusion. The base board together with the first terminals and the second terminals are disposed in the insulating housing. The contact portions and the contact protrusions are exposed outside through the window.Type: GrantFiled: May 15, 2013Date of Patent: November 4, 2014Assignee: Power Quotient International Co., Ltd.Inventors: Charles C Lee, Chia Hsin Tsai, Jen Fu Chen, Yu Cheng Chang
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Patent number: 8872866Abstract: A 3D display panel includes a plurality of first and second viewing angle pixels arranged along a first direction for displaying first and second viewing angle images respectively. The first viewing angle pixels and the second viewing angle pixels are interlacedly arranged along a second direction. A method for controlling pixel brightness of the 3D display panel includes determining a brightness value of a first block of a first viewing angle pixel according to a brightness value of the first viewing angle pixel and a brightness value of a second viewing angle pixel next to the first viewing angle pixel along the second direction, and determining a brightness value of a second block of the first viewing angle pixel according to the brightness value of the first block of the first viewing angle pixel and the brightness value of the first viewing angle pixel.Type: GrantFiled: October 30, 2011Date of Patent: October 28, 2014Assignee: AU Optronics Corp.Inventors: Chih-Yao Ma, Yu-Cheng Chang, Yi-Pai Huang, Cheng-Han Tsao, Chao-Yuan Chen
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Publication number: 20140176834Abstract: An active liquid crystal array device is provided, A gate control electrode is disposed on the first transparent conductive substrate, a first transparent insulation layer is disposed on the gate control electrode, a liquid crystal control electrode is disposed on the first transparent insulation layer, a second transparent conductive substrate which includes a transparent electrode and a second liquid crystal oriented layer, and a liquid crystal layer is disposed between the first liquid crystal oriented layer and a second liquid crystal oriented layer.Type: ApplicationFiled: March 14, 2013Publication date: June 26, 2014Inventors: Tai-Hsiang JEN, Chih-Wei CHEN, Yu-Cheng CHANG, Po-Yuan HSIEH, Yi-Pai HUANG
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Patent number: 8742931Abstract: An electronic seal includes a radio frequency identification apparatus, an antenna assembly and an impedance matching circuit. The radio frequency identification apparatus includes at least two radio frequency identification units each for providing a specific code for identification. The antenna assembly is electrically connected to the radio frequency identification units. The antenna assembly is used to receive an electromagnetic signal for identification to excite the radio frequency identification units to transmit the specific codes through the antenna assembly. The impedance matching circuit is provided between the radio frequency identification units and the antenna assembly for adjusting the impedance matching of the radio frequency identification units to the antenna assembly, thus adjusting excitation powers and feedback powers of the specific codes from the radio frequency identification units through the antenna assembly.Type: GrantFiled: August 30, 2011Date of Patent: June 3, 2014Assignee: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National DefenseInventors: Ming-Town Lee, Yu-Cheng Chang, Wei-Yi Tseng
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Patent number: 8729881Abstract: A voltage/current control apparatus and method are disclosed. The apparatus includes a low-side field effect transistor (FET) having a source, a gate and a drain, a high-side field effect transistor (FET) having a source, a gate and a drain, a gate driver integrated circuit (IC), a sample and hold circuit, and a comparator configured to produce a trigger signal at the output when a sum of the first and second input signals is equal to a sum of the third and fourth input signals, wherein the trigger signal is configured to trigger a beginning of a new cycle by turning the gate of the high-side FET “on” and the gate of the low-side FET “off”.Type: GrantFiled: May 17, 2011Date of Patent: May 20, 2014Assignee: Alpha & Omega Semiconductor LtdInventor: Yu Cheng Chang
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Publication number: 20140118293Abstract: A touch sensing panel includes first electrodes and second electrodes. The first electrodes are connected with each other. The second electrodes and the first electrodes are formed on a same surface of a substrate. The first electrodes are formed on the substrate in a first direction, and the second electrodes are formed on the substrate in a second direction which is perpendicular to the first direction. Furthermore, the second electrodes are electrically connected with each other through conductive lines, and adjacent two of the first electrodes surround one of the second electrodes.Type: ApplicationFiled: March 10, 2013Publication date: May 1, 2014Applicant: NUVOTON TECHNOLOGY CORPORATIONInventors: Yu-Cheng CHANG, Ya-Nan WEN
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Publication number: 20140119076Abstract: A power converter used in the current control circuit and control method, consisting of a converter, a voltage divider circuit, a current sampling circuit, a first gain circuit, a differential amplifier, a second gain circuit, a multiplier, a saw tooth wave generator, a modulation comparator, and a driver. The invention samples inductor current through the current sampling circuit and generates the current sense signal, then processes again. With the differential amplifier, it compares the feedback voltage from the voltage divider circuit with the reference voltage, and the results along a modulation comparator output a drive signal to control the duty cycle in order to avoid the generation of inrush current. The present invention avoids inrush current caused by the large drive signal and achieves a good response rate and better system stability.Type: ApplicationFiled: August 26, 2013Publication date: May 1, 2014Applicant: Luxmill Electronic Co., LtdInventors: Yu-Cheng CHANG, Mao-feng LAN, Chung-hung LIN
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Publication number: 20140045254Abstract: A cell self-assembly array chip comprises a first substrate, a second substrate and a plurality of spacer elements. The first substrate, the spacer elements and the second substrate are stacked to be one in turn, wherein the spacer elements are annularly arranged at interval and disposed on the second substrate, so as to define a cell self-assembly region and at least one drawing channel. Furthermore, because the liquid portion of cell suspension horizontally and radially passed the drawing channel outward and the radially outward pulling force generated by the evaporation effect of the liquid portion, so as to cause the cells are arranged by the cell self-assembly array to the cell self-assembly region. The present invention further provides a manufacturing method of a cell self-assembly array chip to solve the conventional problems which is difficult to culture living cells and not easy to apply optical observation.Type: ApplicationFiled: December 21, 2012Publication date: February 13, 2014Applicant: NATIONAL TSING HUA UNIVERSITYInventors: Fan-Gang TSENG, Tsung-Ju CHEN, Yu-Cheng CHANG
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Publication number: 20130344730Abstract: An electrical connector includes a fastening part, a connector body assembled under the fastening part and defining at least one receiving groove at a mating end thereof, a base board positioned under the connector body, and a shielding shell. The connector body and the base board can be firmly fastened in the shielding shell by means of the fastening part. At least one end edge of the shielding shell is bent inward to form a positioning tail positioned in the receiving groove to position the mating end of the connector body with a front face of the mating end being flush with the end edge of the shielding shell and a contact face of the connector body being substantially flush with a top edge of the positioning tail, so as to avoid the mating end of the connector body wrapping in use.Type: ApplicationFiled: May 24, 2013Publication date: December 26, 2013Applicant: Power Quotient International Co., Ltd.Inventors: Chia Hsin Tsai, Charles C. Lee, Yu Cheng Chang, Jen Fu Chen
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Publication number: 20130309907Abstract: An electrical connector includes a base board having a plurality of first contact pads and second contact pads exposed on one end of the base board, a plurality of first terminals each having one end thereof connected with the corresponding first contact pad of the base board, a plurality of second terminals each having one end thereof arranged alternately with the first terminals and connected with the corresponding second contact pad of the base board, and an insulating housing having a window. The other end of the first terminal is slanted downward at an angle and then curved upward back to form a barb-like contact portion. The other end of the second terminal defines a contact protrusion. The base board together with the first terminals and the second terminals are disposed in the insulating housing. The contact portions and the contact protrusions are exposed outside through the window.Type: ApplicationFiled: May 15, 2013Publication date: November 21, 2013Applicant: Power Quotient International Co., Ltd.Inventors: Charles C. Lee, Chia Hsin Tsai, Jen Fu Chen, Yu Cheng Chang
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Publication number: 20130306946Abstract: A touch display panel including a array substrate, an opposite substrate, an organic light emitting diode (OLED) structure, a plurality of conductive spacers and a sealant is provided. The OLED structure is disposed on the opposite substrate and located between the array substrate and the opposite substrate. The OLED structure includes a first electrode layer, an organic light emitting layer and a second electrode layer which are sequentially disposed. The first electrode layer is located on the opposite substrate and includes a plurality of touch sensing electrode. The second electrode layer is electrically connected to the array substrate via the conductive spacers. The sealant is sealed the OLED structure and the conductive spacers between the array substrate and the opposite substrate.Type: ApplicationFiled: May 13, 2013Publication date: November 21, 2013Applicant: WINTEK CORPORATIONInventors: Ting-Yu Chang, Ching-Fu Hsu, Yu-Hua Wu, Yu-Cheng Chang, Wen-Chun Wang
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Patent number: 8508371Abstract: A multi-secured RFID (Radio Frequency Identification) electronic seal includes a bolt, a bolt pedestal and a RFID system. The bolt has a male bolt portion with an electrical connecting point. The bolt pedestal has a female pedestal portion with several nodes to electrically connect with the electrical connecting point to provide plural selections of connecting and disconnecting. The RFID system includes a RFID chip and a transmission conductor embedded in the bolt, and an antenna installed on the bolt pedestal. When the bolt and the bolt pedestal is securely locked together, whether the RFID chip is electrically connects to the antenna depends on if the electrical connecting point connects a preset node, so that a RFID signal may be selectively transmitted by the RFID chip through the antenna.Type: GrantFiled: November 16, 2010Date of Patent: August 13, 2013Assignee: Chung-Shan Institute of Science and TechnologyInventors: Ming-Town Lee, Yu-Cheng Chang
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Patent number: 8500463Abstract: The present invention relates to a USB connector, which comprises: a connector main body having plural open slots, plural first terminals and plural second terminals; and a substrate having plural first contact pads and plural second contact pads respectively exposed outside the substrate, and the plural first contact pads and the plural second contact pads are staggeringly arranged for being respectively coupled to the plural first terminals and the plural second terminals, thereby forming a USB connector. The USB connector allows a USB2.0 connector and a USB3.0 connector to be respectively inserted.Type: GrantFiled: February 13, 2012Date of Patent: August 6, 2013Assignee: Power Quotient International Co., Ltd.Inventors: Chia-Hsin Tsai, Yu-Cheng Chang
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Publication number: 20130155306Abstract: The present invention relates to a image capturing device having an expansion dock, which comprises: an image capturing device having a first connector; an expansion dock having a second connector for being connected with the first connector; a display device; a printed circuit board; and a drive unit; thereby enabling the image data captured by the image capturing device to be displayed on the display device or to be transmitted by a wireless communication module through connecting the first connector and the second connector.Type: ApplicationFiled: April 2, 2012Publication date: June 20, 2013Inventors: Hung-Chi Tung, Chia-Hsin Tsai, Yu-Cheng Chang, Po-Hung Lin, Shou-Min Hung
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Patent number: D694728Type: GrantFiled: August 25, 2011Date of Patent: December 3, 2013Assignee: Top Victory Invesments Ltd.Inventor: Yu-Cheng Chang
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Patent number: D712414Type: GrantFiled: September 10, 2013Date of Patent: September 2, 2014Assignee: Power Quotient International Co., Ltd.Inventors: Chia-Hsin Tsai, Hung-Yi Lin, Yu-Cheng Chang, Ya-Fen Chen