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).
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Publication number: 20220082601Abstract: 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: ApplicationFiled: October 7, 2020Publication date: March 17, 2022Inventors: David M. Crowley, Gerardo Orozco Valdes, Chen Chang
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Patent number: 11268787Abstract: 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: GrantFiled: April 22, 2021Date of Patent: March 8, 2022Inventors: Keith Bernkrant, Chen Chang
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Patent number: 11255891Abstract: 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: GrantFiled: October 7, 2020Date of Patent: February 22, 2022Assignee: National Instruments CorporationInventors: David M. Crowley, Gerardo Orozco Valdes, Chen Chang
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Patent number: 11050496Abstract: 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: GrantFiled: October 23, 2018Date of Patent: June 29, 2021Assignee: National Instruments CorporationInventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
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Patent number: 10790915Abstract: 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: GrantFiled: November 2, 2018Date of Patent: September 29, 2020Assignee: National Instruments CorporationInventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
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Publication number: 20190356397Abstract: 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: ApplicationFiled: November 2, 2018Publication date: November 21, 2019Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
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Publication number: 20190353698Abstract: 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: ApplicationFiled: October 23, 2018Publication date: November 21, 2019Inventors: Marcus K. DaSilva, Chen Chang, Charles G. Schroeder, Ahsan Aziz, Paramjit S. Banwait
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Patent number: 9935637Abstract: 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: GrantFiled: February 11, 2015Date of Patent: April 3, 2018Assignee: NATIONAL INSTRUMENTS CORPORATIONInventors: Chen Chang, Kevin B. Camera, Alexander Williams, Brian Jenkins, Ellery Cochell, Robert W. Brodersen, John C. Wawrzynek
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Patent number: 9773145Abstract: 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: GrantFiled: July 8, 2016Date of Patent: September 26, 2017Assignee: Honeywell International, Inc.Inventors: Chen Chang, Dayaker Mupkala, Xia Tian
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Patent number: 9753881Abstract: 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: GrantFiled: March 14, 2014Date of Patent: September 5, 2017Assignee: NATIONAL INSTRUMENTS CORPORATIONInventors: Chen Chang, Kevin B. Camera, John C. Wawrzynek, Robert W. Brodersen
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Patent number: 9562309Abstract: 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: GrantFiled: January 28, 2013Date of Patent: February 7, 2017Assignee: Changzhou Machine Master Co., Ltd.Inventor: Chen Chang
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Publication number: 20160321491Abstract: 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: ApplicationFiled: July 8, 2016Publication date: November 3, 2016Inventors: Chen Chang, Dayaker Mupkala, Xia Tian
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Publication number: 20160275034Abstract: 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: ApplicationFiled: March 14, 2014Publication date: September 22, 2016Inventors: Chen Chang, Kevin B. Camera, John C. Wawrzynek, Robert W. Brodersen
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Patent number: 9390304Abstract: 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: GrantFiled: June 27, 2012Date of Patent: July 12, 2016Assignee: Honeywell InternationalInventors: Chen Chang, Dayaker Mupkala, Xia Tian
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Publication number: 20160035045Abstract: 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: ApplicationFiled: August 29, 2014Publication date: February 4, 2016Inventors: Chen Chang, Wenjin Zhang, Marie Kim, Junghoon Andrew Ahn
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Publication number: 20160026961Abstract: 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: ApplicationFiled: July 24, 2014Publication date: January 28, 2016Inventors: Chen Chang, Daniel I. Lurie, Michael J. Miller, Wenjing Zhang, Nicholas Lewis VanWagner
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Publication number: 20150229310Abstract: 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: ApplicationFiled: February 11, 2015Publication date: August 13, 2015Inventors: Chen Chang, Kevin B. Camera, Alexander Williams, Brian Jenkins, Ellery Cochell, Robert W. Brodersen, John C. Wawrzynek
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Patent number: 9087221Abstract: 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: GrantFiled: January 8, 2014Date of Patent: July 21, 2015Assignee: OTHE TECHNOLOGY INC.Inventors: Chi-Pei Wang, Chen Chang, Kai-Hsiang Chou
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Publication number: 20150152583Abstract: 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: ApplicationFiled: January 28, 2013Publication date: June 4, 2015Inventor: Chen Chang
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Publication number: 20150107382Abstract: 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: ApplicationFiled: January 28, 2013Publication date: April 23, 2015Applicant: CHANGZHOU MACHINE MASTER CO., LTD.Inventor: Chen Chang