Patents by Inventor Chen Chang

Chen 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: 20220082601
    Abstract: Various embodiments are presented of a system including an alignment fixture for testing (e.g., rapidly and cheaply) phased array antennas and other devices configured for radio frequency (RF) transmission and/or reception. A device to be tested (e.g., the device under test (DUT)) may be positioned in a testing position by the alignment fixture. The alignment fixture may provide a configurable level of friction to retain the DUT in the testing position. The alignment fixture may provide isolation from electromagnetic interference for the DUT while in the testing position.
    Type: Application
    Filed: October 7, 2020
    Publication date: March 17, 2022
    Inventors: David M. Crowley, Gerardo Orozco Valdes, Chen Chang
  • Patent number: 11268787
    Abstract: A sighting system comprising light-emitting rear sighting indicators in which a set of rear sighting indicators disposed on or near the hammer end of a firearm, and, optionally, a front sighting indicator that comprises a brightly colored dot or fiber-optic sighting indicator. The rear sighting indicators may comprise fiber-optic elements that channel light energy towards the user's eye. In use, when the user brings the firearm to a firing position, the user's eyes and mind are able to quickly acquire the light-emitting rear indicators and subconsciously aim the firearm at an intended target, or to point the firearm in a desired direction. Thus, the fast acquiring firearm sighting system enables a firearm to be quickly aimed and fired. The use of the fast acquiring firearm sighting system of the invention reduces the processing load on the user's eyes and brain and makes aiming the firearm intuitive and instant.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: March 8, 2022
    Inventors: Keith Bernkrant, Chen Chang
  • Patent number: 11255891
    Abstract: Various embodiments are presented of a system including an alignment fixture for testing (e.g., rapidly and cheaply) phased array antennas and other devices configured for radio frequency (RF) transmission and/or reception. A device to be tested (e.g., the device under test (DUT)) may be positioned in a testing position by the alignment fixture. The alignment fixture may provide a configurable level of friction to retain the DUT in the testing position. The alignment fixture may provide isolation from electromagnetic interference for the DUT while in the testing position.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: February 22, 2022
    Assignee: National Instruments Corporation
    Inventors: David M. Crowley, Gerardo Orozco Valdes, Chen Chang
  • Patent number: 11050496
    Abstract: Testing devices such as integrated circuits (IC) with integrated antennas configured for millimeter wave (mmW) transmission and/or reception. A DUT may be mounted to an interface in a measurement fixture (e.g., a socket, anechoic chamber, etc.). Power and data connections of the DUT may be tested over the interface, which may also provide connections (e.g., wired) for input/output signals, power, and control and may also provide positioning. Radio frequency (RF) characteristics of the DUT may be tested over-the-air using an array of antennas or probes in the radiating Fresnel zone of the DUT's antennas. Each of the antennas or probes of the array may incorporate a power detector (e.g., a diode) so that the RF radiating pattern may be measured using DC voltage measurements. Measured voltage measurements may be compared to an ideal signature, e.g., voltage measurements expected from an ideal or model DUT.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: June 29, 2021
    Assignee: National Instruments Corporation
    Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
  • Patent number: 10790915
    Abstract: Various embodiments are presented of a system and method for testing (e.g., rapidly and cheaply) devices with antennas configured for radio frequency (RF) and/or millimeter wave (mmW) transmission and/or reception. A device to be tested (e.g., the device under test (DUT)) may be mounted to an interface in a measurement fixture (e.g., a socket, anechoic chamber, etc.). Power and data connections of the DUT may be tested over the interface, which may also provide connections for input/output signals, power, and control and may also provide positioning. RF characteristics (e.g., including transmission, reception, and/or beamforming) of the DUT may be tested over-the-air using an array of antennas or probes.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: September 29, 2020
    Assignee: National Instruments Corporation
    Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
  • Publication number: 20190356397
    Abstract: Various embodiments are presented of a system and method for testing (e.g., rapidly and cheaply) devices with antennas configured for radio frequency (RF) and/or millimeter wave (mmW) transmission and/or reception. A device to be tested (e.g., the device under test (DUT)) may be mounted to an interface in a measurement fixture (e.g., a socket, anechoic chamber, etc.). Power and data connections of the DUT may be tested over the interface, which may also provide connections for input/output signals, power, and control and may also provide positioning. RF characteristics (e.g., including transmission, reception, and/or beamforming) of the DUT may be tested over-the-air using an array of antennas or probes.
    Type: Application
    Filed: November 2, 2018
    Publication date: November 21, 2019
    Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
  • Publication number: 20190353698
    Abstract: Testing devices such as integrated circuits (IC) with integrated antennas configured for millimeter wave (mmW) transmission and/or reception. A DUT may be mounted to an interface in a measurement fixture (e.g., a socket, anechoic chamber, etc.). Power and data connections of the DUT may be tested over the interface, which may also provide connections (e.g., wired) for input/output signals, power, and control and may also provide positioning. Radio frequency (RF) characteristics of the DUT may be tested over-the-air using an array of antennas or probes in the radiating Fresnel zone of the DUT's antennas. Each of the antennas or probes of the array may incorporate a power detector (e.g., a diode) so that the RF radiating pattern may be measured using DC voltage measurements. Measured voltage measurements may be compared to an ideal signature, e.g., voltage measurements expected from an ideal or model DUT.
    Type: Application
    Filed: October 23, 2018
    Publication date: November 21, 2019
    Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
  • Patent number: 9935637
    Abstract: A design environment for FPGA applications enables configuration of an FPGA platform to include a user design and one or more interface units, which the user design can use to access one or more external modules/devices without needing any particular knowledge of the structure and operation of such modules/devices. The interface unit corresponding to an external device/module, under the control of an operating environment, can establish a communication between the user design and the external module/device. An external processing module can use an interface unit to monitor and/or control a user design.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: April 3, 2018
    Assignee: NATIONAL INSTRUMENTS CORPORATION
    Inventors: Chen Chang, Kevin B. Camera, Alexander Williams, Brian Jenkins, Ellery Cochell, Robert W. Brodersen, John C. Wawrzynek
  • Patent number: 9773145
    Abstract: An encoded information reading (EIR) terminal can comprise a microprocessor, a memory, an EIR device including a two-dimensional imager, and a micro-projector including a light source and a light manipulation sub-system. The EIR device can be configured to output raw message data containing an encoded message and/or output a decoded message corresponding to an encoded message. The EIR terminal can be configured to acquire an image of a target object in a field of view (FOV) of the two-dimensional imager. The EIR terminal can be further configured, responsive to successfully locating decodable indicia within the image, to produce a decoded message by decoding the decodable indicia. The EIR terminal can be further configured, responsive to successfully decoding the decodable indicia, to generate a projectable image and to project the projectable image onto a surface the target object using the micro-projector.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 26, 2017
    Assignee: Honeywell International, Inc.
    Inventors: Chen Chang, Dayaker Mupkala, Xia Tian
  • Patent number: 9753881
    Abstract: A computing platform includes an array of interconnected field programmable gate arrays (FPGAs), memory, and external input/output interfaces. The platform is in the form of a blade conforming to the Advanced Telecommunications Computing Architecture (ATCA) standard. The platform is especially useful for telecommunications and networking applications.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: September 5, 2017
    Assignee: NATIONAL INSTRUMENTS CORPORATION
    Inventors: Chen Chang, Kevin B. Camera, John C. Wawrzynek, Robert W. Brodersen
  • Patent number: 9562309
    Abstract: A double-drive transmission washing machine and method comprising: fixedly connecting an input part of a speed reduction mechanism to a power part for providing rotational driving power; fixedly connecting a spinning output part of the speed reduction mechanism to a spin tube of the washing machine; connecting a agitating output part of the speed reduction mechanism to a wash shaft of the washing machine; by means of connecting the agitating output part to the input part, the agitating output part revolves around an axis of the power part; and by means of meshing connection between the spinning output part and the agitating output part, the spinning output part and the agitating output part are interacting with each other, but rotate separately drive the wash shaft and the spin tube to rotate individually. This washing machine has the rotation speed of the wash shaft vary according to the washing load.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: February 7, 2017
    Assignee: Changzhou Machine Master Co., Ltd.
    Inventor: Chen Chang
  • Publication number: 20160321491
    Abstract: An encoded information reading (EIR) terminal can comprise a microprocessor, a memory, an EIR device including a two-dimensional imager, and a micro-projector including a light source and a light manipulation sub-system. The EIR device can be configured to output raw message data containing an encoded message and/or output a decoded message corresponding to an encoded message. The EIR terminal can be configured to acquire an image of a target object in a field of view (FOV) of the two-dimensional imager. The EIR terminal can be further configured, responsive to successfully locating decodable indicia within the image, to produce a decoded message by decoding the decodable indicia. The EIR terminal can be further configured, responsive to successfully decoding the decodable indicia, to generate a projectable image and to project the projectable image onto a surface the target object using the micro-projector.
    Type: Application
    Filed: July 8, 2016
    Publication date: November 3, 2016
    Inventors: Chen Chang, Dayaker Mupkala, Xia Tian
  • Publication number: 20160275034
    Abstract: A computing platform includes an array of interconnected field programmable gate arrays (FPGAs), memory, and external input/output interfaces. The platform is in the form of a blade conforming to the Advanced Telecommunications Computing Architecture (ATCA) standard. The platform is especially useful for telecommunications and networking applications.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 22, 2016
    Inventors: Chen Chang, Kevin B. Camera, John C. Wawrzynek, Robert W. Brodersen
  • Patent number: 9390304
    Abstract: An encoded information reading (EIR) terminal can include a microprocessor, a memory, an EIR device including a two-dimensional imager, and a micro-projector including a light source and a light manipulation sub-system. The EIR device can be configured to output raw message data containing an encoded message and/or output a decoded message corresponding to an encoded message. The EIR terminal can be configured to acquire an image of a target object in a field of view (FOV) of the two-dimensional imager. The EIR terminal can be further configured, responsive to successfully locating decodable indicia within the image, to produce a decoded message by decoding the decodable indicia. The EIR terminal can be further configured, responsive to successfully decoding the decodable indicia, to generate a projectable image and to project the projectable image onto a surface the target object using the micro-projector.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 12, 2016
    Assignee: Honeywell International
    Inventors: Chen Chang, Dayaker Mupkala, Xia Tian
  • Publication number: 20160035045
    Abstract: Systems and methods are disclosed that determines an occupation for a member of a social networking site based on information obtained from a profile of that member. The obtained information may include employment information, such as a job title, skills that the member has identified as possessing, endorsements by other members of the identified skills, and information about the endorsers of the endorsements. The disclosed systems and methods may determine one or more probabilities for various occupations that the member may have, and may further adjust those probabilities based on the obtained information. The systems and methods may additionally provide a list of members that have a given occupation based on the corresponding occupation probability of the given occupation. The systems and methods may also provide a list of organizations (i.e., employers) where it was determined that it was unlikely that the organization has any members with the given occupation.
    Type: Application
    Filed: August 29, 2014
    Publication date: February 4, 2016
    Inventors: Chen Chang, Wenjin Zhang, Marie Kim, Junghoon Andrew Ahn
  • Publication number: 20160026961
    Abstract: The disclosed embodiments provide a system that processes data. During operation, the system obtains a set of data associated with social selling practices for a sales entity on a social network. Next, the system calculates, on a processor, a set of metrics from the data, wherein the metrics are associated with creating a professional brand, finding prospects, engaging with insights, and building relationships. The system then aggregates the metrics into a social selling index (SSI) score for the sales entity. Finally, the system provides the SSI score for use in managing the social selling practices of the sales entity.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 28, 2016
    Inventors: Chen Chang, Daniel I. Lurie, Michael J. Miller, Wenjing Zhang, Nicholas Lewis VanWagner
  • Publication number: 20150229310
    Abstract: A design environment for FPGA applications enables configuration of an FPGA platform to include a user design and one or more interface units, which the user design can use to access one or more external modules/devices without needing any particular knowledge of the structure and operation of such modules/devices. The interface unit corresponding to an external device/module, under the control of an operating environment, can establish a communication between the user design and the external module/device. An external processing module can use an interface unit to monitor and/or control a user design.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 13, 2015
    Inventors: Chen Chang, Kevin B. Camera, Alexander Williams, Brian Jenkins, Ellery Cochell, Robert W. Brodersen, John C. Wawrzynek
  • Patent number: 9087221
    Abstract: A device for preventing logging of client input data in a computer system, characterized in that it includes a first transmission interface used to connect the smart electronic device, a second transmission interface used to connect the computer system, and a data encryption chip for encryption of the input data. The data encryption chip is set between the first and second transmission interfaces and is used to encrypt data input from the first transmission interface, and then transmit the encrypted data to the computer system via the second transmission interface. The device allows for the use of a smart electronic device as a real keyboard, and the computer system permits the data encryption chip to encrypt the data input by the smart electronic device, which are then sent to the computer system, helping to prevent logging of keying data with higher efficacy and applicability.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: July 21, 2015
    Assignee: OTHE TECHNOLOGY INC.
    Inventors: Chi-Pei Wang, Chen Chang, Kai-Hsiang Chou
  • Publication number: 20150152583
    Abstract: A double-drive transmission washing machine and method comprising: fixedly connecting an input part of a speed reduction mechanism to a power part for providing rotational driving power; fixedly connecting a spinning output part of the speed reduction mechanism to a spin tube of the washing machine; connecting a agitating output part of the speed reduction mechanism to a wash shaft of the washing machine; by means of connecting the agitating output part to the input part, the agitating output part revolves around an axis of the power part; and by means of meshing connection between the spinning output part and the agitating output part, the spinning output part and the agitating output part are interacting with each other, but rotate separately drive the wash shaft and the spin tube to rotate individually. This washing machine has the rotation speed of the wash shaft vary according to the washing load.
    Type: Application
    Filed: January 28, 2013
    Publication date: June 4, 2015
    Inventor: Chen Chang
  • Publication number: 20150107382
    Abstract: Disclosed is a gear reduction mechanism, comprising: a rotation body without rotation shaft to provide rotation energy; a speed reduction input part mounting inside the above rotation body, which obtains the above rotation power, and uses the obtained rotation power to rotate relative to the axis of rotation body; a speed reduction output part that connected with the above speed reduction input part, which used to output the power by the rotation speed that equal to or lower than the speed of the above rotation body; the first execution part and the second execution part that connected with the above speed reduction output part, which used to rotate under the action of the force of the above speed reduction output part.
    Type: Application
    Filed: January 28, 2013
    Publication date: April 23, 2015
    Applicant: CHANGZHOU MACHINE MASTER CO., LTD.
    Inventor: Chen Chang