Patents by Inventor Hung-Lun Chang
Hung-Lun 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).
-
Publication number: 20240138018Abstract: A user equipment assistance information (UAI) negotiation method, for a user equipment (UE) of mobile communication includes receiving a first OtherConfig element of an RRC reconfiguration message comprising a plurality of configuration parameters with SETUP values from a network terminal; sending a first UAI including a first value of a first configuration parameter of the configuration parameters to the network terminal; and receiving a first RRC reconfiguration message corresponding to the first UAI from the network terminal.Type: ApplicationFiled: October 2, 2023Publication date: April 25, 2024Applicant: MediaTek Singapore Pte. Ltd.Inventors: Hung-Yueh Chen, Yu-Lun Chang, Byeng Hyun Kim, JUNG SHUP SHIN, Hung-Yuan Yang, Jun-Jie Su, Kyung Hyun Ahn
-
Publication number: 20240129766Abstract: A throttle control method for a mobile device include collecting input data, generating a first set of user experience indices according to the input data, and checking whether a user experience index of the first set of user experience indices satisfies a UEI threshold. The input data includes common information data, current configuration data and a plurality of throttle control parameters. Each user experience index of the first set of user experience indices is corresponding to at least one of throttle control parameter of the plurality of throttle control parameters.Type: ApplicationFiled: April 10, 2023Publication date: April 18, 2024Applicant: MediaTek Singapore Pte. Ltd.Inventors: Hung-Yueh Chen, Byeng Hyun Kim, JUNG SHUP SHIN, Shih-Hsin Chen, Chih-Chieh Lai, Chung-Pi Lee, JUNGWOO LEE, Yu-Lun Chang
-
Patent number: 11961811Abstract: A semiconductor structure includes a semiconductor element and a first bonding structure. The semiconductor element has a first surface and a second surface opposite to the first surface. The first bonding structure is disposed adjacent to the first surface of the semiconductor element, and includes a first electrical connector, a first insulation layer surrounding the first electrical connector and a first conductive layer surrounding the first insulation layer.Type: GrantFiled: June 14, 2022Date of Patent: April 16, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chen-Hua Yu, Hung-Jui Kuo, Hui-Jung Tsai, Tsao-Lun Chang
-
Patent number: 11958200Abstract: An automatic robotic arm system and a coordinating method for robotic arm and computer vision thereof are disclosed. A beam-splitting mirror splits an incident light into a visible light and a ranging light and respectively guides to an image capturing device and an optical ranging device arranged in the different reference axes. In a calibration mode, a transformation relation is computed based on a plurality of the calibration postures and corresponding calibration images. In an operation mode, a mechanical space coordinate is determined based on an operation image and the transformation relation, and the robotic arm is controlled to move based on the mechanical space coordinate.Type: GrantFiled: December 28, 2021Date of Patent: April 16, 2024Assignee: DELTA ELECTRONICS, INC.Inventors: Hung-Hsin Chen, Chia-Jun Yu, Qi-Ming Huang, Chin-Lun Chang, Keng-Ning Chang
-
Patent number: 9685757Abstract: A dual testing system and method is used to perform both optical power and wavelength measurements on laser light emitted from a laser diode, such as a chip-on-submount (COS) laser diode or a laser diode in a bar laser. A testing fixture may be used to facilitate both measurements by simultaneously detecting the light for performing a first test including the optical power measurement(s) and reflecting the light for performing a second test including the wavelength measurement(s). The testing fixture may include an angled photodetector and an optical coupling system such as a collimating lens, a focal lens and an optical waveguide. The testing fixture may be electrically connected to an optical power testing module, such as a light-current-voltage (LIV) testing module, for performing the optical power measurement(s) and may be optically coupled to a wavelength measurement module, such as an optical spectrum analyzer (OSA) for performing the wavelength measurement(s).Type: GrantFiled: January 2, 2015Date of Patent: June 20, 2017Assignee: Applied Optoelectronics, Inc.Inventors: Guipeng Luo, Klaus Alexander Anselm, Hung-Lun Chang
-
Patent number: 9432122Abstract: A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.Type: GrantFiled: February 25, 2014Date of Patent: August 30, 2016Assignee: Applied Optoelectronics, Inc.Inventors: I-Lung Ho, Jun Zheng, Hung-Lun Chang
-
Publication number: 20160197453Abstract: A dual testing system and method is used to perform both optical power and wavelength measurements on laser light emitted from a laser diode, such as a chip-on-submount (COS) laser diode or a laser diode in a bar laser. A testing fixture may be used to facilitate both measurements by simultaneously detecting the light for performing a first test including the optical power measurement(s) and reflecting the light for performing a second test including the wavelength measurement(s). The testing fixture may include an angled photodetector and an optical coupling system such as a collimating lens, a focal lens and an optical waveguide. The testing fixture may be electrically connected to an optical power testing module, such as a light-current-voltage (LIV) testing module, for performing the optical power measurement(s) and may be optically coupled to a wavelength measurement module, such as an optical spectrum analyzer (OSA) for performing the wavelength measurement(s).Type: ApplicationFiled: January 2, 2015Publication date: July 7, 2016Inventors: Guipeng Luo, Klaus Alexander Anselm, Hung-Lun Chang
-
Patent number: 9343870Abstract: A semiconductor laser diode with integrated heating generally includes a lasing region and a heating region integrated into the same semiconductor structure or chip. The lasing region and the heating region include first and second portions, respectively, of the semiconductor layers forming the semiconductor structure and include first and second portions, respectively, of the active regions formed by the semiconductor layers. Separate laser and heater electrodes are electrically connected to the respective lasing and heating regions for driving the respective lasing and heating regions with drive currents. The heating region may thus be driven independently from the lasing region, and heat may be conducted through the semiconductor layers from the heating region to the lasing region allowing the temperature to be controlled more efficiently.Type: GrantFiled: September 30, 2014Date of Patent: May 17, 2016Assignee: Applied Optoelectronics, Inc.Inventors: Jun Zheng, Klaus Alexander Anselm, Huanlin Zhang, Hung-Lun Chang
-
Patent number: 9341774Abstract: A laser array optical coupling assembly may be used to couple a laser array to an arrayed waveguide grating (AWG), for example, in an optical transmitter in a wavelength division multiplexed (WDM) optical communication system. The laser array optical coupling assembly may include an optical fiber tip array with polished optical fiber tips providing a reduced mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may also include a direct coupling of the laser array to the AWG with modified AWG inputs reducing the mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may be used, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON) or in other transmitters or transceivers in a WDM system capable of transmitting and receiving optical signals on multiple channel wavelengths.Type: GrantFiled: January 24, 2012Date of Patent: May 17, 2016Assignee: Applied Optoelectronics, Inc.Inventors: Jun Zheng, I-Lung Ho, Hung-Lun Chang
-
Publication number: 20160094013Abstract: A semiconductor laser diode with integrated heating generally includes a lasing region and a heating region integrated into the same semiconductor structure or chip. The lasing region and the heating region include first and second portions, respectively, of the semiconductor layers forming the semiconductor structure and include first and second portions, respectively, of the active regions formed by the semiconductor layers. Separate laser and heater electrodes are electrically connected to the respective lasing and heating regions for driving the respective lasing and heating regions with drive currents. The heating region may thus be driven independently from the lasing region, and heat may be conducted through the semiconductor layers from the heating region to the lasing region allowing the temperature to be controlled more efficiently.Type: ApplicationFiled: September 30, 2014Publication date: March 31, 2016Inventors: Jun Zheng, Klaus Alexander Anselm, Huanlin Zhang, Hung-Lun Chang
-
Publication number: 20150245114Abstract: A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.Type: ApplicationFiled: February 25, 2014Publication date: August 27, 2015Applicant: Applied Optoelectronics, Inc.Inventors: I-Lung Ho, Jun Zheng, Hung-Lun Chang
-
Publication number: 20130188951Abstract: A laser array optical coupling assembly may be used to couple a laser array to an arrayed waveguide grating (AWG), for example, in an optical transmitter in a wavelength division multiplexed (WDM) optical communication system. The laser array optical coupling assembly may include an optical fiber tip array with polished optical fiber tips providing a reduced mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may also include a direct coupling of the laser array to the AWG with modified AWG inputs reducing the mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may be used, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON) or in other transmitters or transceivers in a WDM system capable of transmitting and receiving optical signals on multiple channel wavelengths.Type: ApplicationFiled: January 24, 2012Publication date: July 25, 2013Applicant: APPLIED OPTOELECTRONICS, INC.Inventors: Jun Zheng, I-Lung Ho, Hung-Lun Chang
-
Publication number: 20120288231Abstract: In a laser package, a tilted laser causes laser light to be coupled into an optical fiber at an angle relative to a fiber axis of the optical fiber. The tilted laser emits laser light at an angle relative to a lens axis of a lens such that the lens directs and focuses the laser light at the angle relative to the fiber axis. Tilting the laser allows the laser light to be coupled into the optical fiber substantially parallel to or aligned with the core of the fiber while causing back reflection to be directed away from the laser, thereby improving coupling efficiency and minimizing feedback. The tilted laser may be coupled to an angle polished fiber, for example, in a laser package such as a TO can type laser package, a butterfly type laser package, or a TOSA type laser package.Type: ApplicationFiled: May 11, 2011Publication date: November 15, 2012Applicant: APPLIED OPTOELECTRONICS, INC.Inventors: Jun Zheng, Wen-Yen Hwang, Hung-Lun Chang
-
Publication number: 20090290613Abstract: An external cavity laser assembly includes an external chirped exit reflector configured to reduce changes in reflectivity, thereby improving linearity. The chirped exit reflector may be configured to provide a reflectivity profile with a substantially flat peak portion, for example, as compared to the reflectivity profile of a uniform period fiber Bragg grating. The chirped exit reflector may also be configured such that an optical cavity length of the external cavity laser is shorter for higher wavelengths, thereby reducing wavelength fluctuations and changes in reflectivity caused by wavelength fluctuations.Type: ApplicationFiled: May 21, 2008Publication date: November 26, 2009Applicant: APPLIED OPTOELECTRONICS, INC.Inventors: Jun Zheng, Chung-Yung Wang, Hung-Lun Chang
-
Patent number: 7519260Abstract: An optoelectronic device separation apparatus may include a first and second clamp members configured to grip coaxial portions of an optoelectronic device. In one embodiment, the clamp members grip a housing portion and a fiber pigtail portion, respectively. The clamp members are configured to rotate relative to each other about an axis that is generally coaxial with the axis of the coaxial portions of the optoelectronic device. A force may be applied to the clamp members to provide such rotation, thereby causing the coaxial portions of the optoelectronic device to separate, for example, along weld points coupling the portions of the optoelectronic device together. Of course, many alternatives, variations and modifications are possible without departing from this embodiment.Type: GrantFiled: December 28, 2007Date of Patent: April 14, 2009Assignee: Applied Optoelectronics, Inc.Inventors: Kai-Sheng Lin, Chung-Yung Wang, Hung-Lun Chang, Limin Chen, Chian-Hung Chen
-
Patent number: 7226218Abstract: A laser module having a laser optically coupled with an optical fiber via a collimating lens and a focusing lens is formed. The laser is mounted in a laser housing so that its laser light output is directed toward a laser housing wall opening in a laser housing wall of the laser housing. A lens-fiber housing having a lens installed in a first end thereof and a light-receiving input end of the fiber disposed in a bore at a second end thereof is provided. The lens and input end of the fiber form a collimator. The lens-fiber housing is mounted from the outside of the laser housing to the laser housing wall to receive collimated light transmitted from inside the laser housing through the laser housing wall opening. The collimating lens is actively aligned in the laser housing, between the laser and the laser housing wall opening, to determine an aligned position. The collimating lens is secured in the laser housing at the aligned position.Type: GrantFiled: September 10, 2004Date of Patent: June 5, 2007Assignee: Applied Optoelectronics, Inc.Inventors: Chung-Yung Wang, Hung-Lun Chang
-
Publication number: 20060056778Abstract: A laser module for optically coupling a laser for generating laser light with an optical fiber having a light-receiving end. A laser assembly has a laser housing comprising a laser housing wall having a laser housing wall opening. A laser is mounted in the laser housing so that its laser light output is directed toward the laser housing wall opening. A lens assembly has a lens housing and a lens mounted in an opening in a first end of the lens housing. The lens housing has a flange protruding from a second end opposite the first end and lens housing walls between the first and second ends of the lens housing. The lens housing walls have a cross-sectional profile smaller than the laser housing wall opening so that the lens housing can be inserted at its first end into the laser housing wall opening and the flange is larger than the laser housing wall opening.Type: ApplicationFiled: September 10, 2004Publication date: March 16, 2006Inventors: Chung-Yung Wang, Hung-Lun Chang
-
Publication number: 20060056777Abstract: A laser module having a laser optically coupled with an optical fiber via a collimating lens and a focusing lens is formed. The laser is mounted in a laser housing so that its laser light output is directed toward a laser housing wall opening in a laser housing wall of the laser housing. A lens-fiber housing having a lens installed in a first end thereof and a light-receiving input end of the fiber disposed in a bore at a second end thereof is provided. The lens and input end of the fiber form a collimator. The lens-fiber housing is mounted from the outside of the laser housing to the laser housing wall to receive collimated light transmitted from inside the laser housing through the laser housing wall opening. The collimating lens is actively aligned in the laser housing, between the laser and the laser housing wall opening, to determine an aligned position. The collimating lens is secured in the laser housing at the aligned position.Type: ApplicationFiled: September 10, 2004Publication date: March 16, 2006Inventors: Chung-Yung Wang, Hung-Lun Chang
-
Patent number: 7010013Abstract: An assembly for improved alignment of a laser for generating laser light with an optical fiber having an end section terminating in a light-receiving end. A laser housing has a base and substantially cylindrical housing walls mounted at a bottom portion to the base. The laser can be mounted on the base. The substantially cylindrical internal surface of the cylindrical housing walls have internal threads at a top portion. The internal threads have a minor diameter and a major diameter. An annular ferrule housing has a substantially cylindrical through-hole with an inner diameter sufficient to receive a fiber ferrule which has the end section of the fiber disposed therein. The ferrule housing further has an axially tapered external surface having external threads which are threadably compatible with the internal threads.Type: GrantFiled: May 2, 2003Date of Patent: March 7, 2006Assignee: Applied Optoelectronics, Inc.Inventors: Chung-Yung Wang, Hung-Lun Chang
-
Publication number: 20040218656Abstract: An assembly for improved alignment of a laser for generating laser light with an optical fiber having an end section terminating in a light-receiving end. A laser housing has a base and substantially cylindrical housing walls mounted at a bottom portion to the base. The laser can be mounted on the base. The substantially cylindrical internal surface of the cylindrical housing walls have internal threads at a top portion. The internal threads have a minor diameter and a major diameter. An annular ferrule housing has a substantially cylindrical through-hole with an inner diameter sufficient to receive a fiber ferrule which has the end section of the fiber disposed therein. The ferrule housing further has an axially tapered external surface having external threads which are threadably compatible with the internal threads.Type: ApplicationFiled: May 2, 2003Publication date: November 4, 2004Applicant: APPLIED OPTOELECTRONICS, INC.Inventors: Chung-Yung Wang, Hung-Lun Chang