Patents by Inventor Jeng Chen
Jeng Chen 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: 20240176017Abstract: In various examples, techniques for sensor-fusion based object detection and/or free-space detection using ultrasonic sensors are described. Systems may receive sensor data generated using one or more types of sensors of a machine. In some examples, the systems may then process at least a portion of the sensor data to generate input data, where the input data represents one or more locations of one or more objects within an environment. The systems may then input at least a portion of the sensor data and/or at least a portion of the input data into one or more neural networks that are trained to output one or more maps or other output representations associated with the environment. In some examples, the map(s) may include a height, an occupancy, and/or height/occupancy map generated, e.g., from a birds-eye-view perspective. The machine may use these outputs to perform one or more operations.Type: ApplicationFiled: November 30, 2022Publication date: May 30, 2024Inventors: David Weikersdorfer, Qian Lin, Aman Jhunjhunwala, Emilie Lucie Eloïse Wirbel, Sangmin Oh, Minwoo Park, Gyeong Woo Cheon, Arthur Henry Rajala, Bor-Jeng Chen
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Publication number: 20240176018Abstract: In various examples, techniques for sensor-fusion based object detection and/or free-space detection using ultrasonic sensors are described. Systems may receive sensor data generated using one or more types of sensors of a machine. In some examples, the systems may then process at least a portion of the sensor data to generate input data, where the input data represents one or more locations of one or more objects within an environment. The systems may then input at least a portion of the sensor data and/or at least a portion of the input data into one or more neural networks that are trained to output one or more maps or other output representations associated with the environment. In some examples, the map(s) may include a height, an occupancy, and/or height/occupancy map generated, e.g., from a birds-eye-view perspective.Type: ApplicationFiled: November 30, 2022Publication date: May 30, 2024Inventors: David Weikersdorfer, Qian Lin, Aman Jhunjhunwala, Emilie Lucie Eloïse Wirbel, Sangmin Oh, Minwoo Park, Gyeong Woo Cheon, Arthur Henry Rajala, Bor-Jeng Chen
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Publication number: 20240020953Abstract: In various examples, feature values corresponding to a plurality of views are transformed into feature values of a shared orientation or perspective to generate a feature map—such as a Bird's-Eye-View (BEV), top-down, orthogonally projected, and/or other shared perspective feature map type. Feature values corresponding to a region of a view may be transformed into feature values using a neural network. The feature values may be assigned to bins of a grid and values assigned to at least one same bin may be combined to generate one or more feature values for the feature map. To assign the transformed features to the bins, one or more portions of a view may be projected into one or more bins using polynomial curves. Radial and/or angular bins may be used to represent the environment for the feature map.Type: ApplicationFiled: July 17, 2023Publication date: January 18, 2024Inventors: Minwoo Park, Trung Pham, Junghyun Kwon, Sayed Mehdi Sajjadi Mohammadabadi, Bor-Jeng Chen, Xin Liu, Bala Siva Sashank Jujjavarapu, Mehran Maghoumi
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Patent number: 11237328Abstract: An optical mode converter is disclosed. The optical mode converter includes a substrate and a luminescent layer on the substrate. The luminescent layer includes an optical waveguide and an inclined mirror at an end of the optical waveguide. A light signal passes through the optical waveguide and is reflected by the inclined mirror to penetrate into the substrate. A method for manufacturing the optical mode converter is also disclosed.Type: GrantFiled: November 19, 2020Date of Patent: February 1, 2022Assignee: NATIONAL SUN YAT-SEN UNIVERSITYInventors: Chen-Yu Weng, Yi-Jen Chiu, Yang-Jeng Chen, Rih-You Chen, Chung-Wei Hsiao, Wei Lin
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Patent number: 11134027Abstract: A method for transmitting upstream data in a cable network is provided. The method includes a cable modem (CM) receiving a generic service identifier (G-SID) included in a corresponding information element (IE) in a data over cable service interface specification (DOCSIS) upstream bandwidth allocation MAP message. The G-SID is a unique identifier assigned to the CM. The method includes the CM transmitting the upstream data for one or more service flows of the CM via at least a portion of the CM bandwidth allocation.Type: GrantFiled: December 13, 2019Date of Patent: September 28, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Yanbin Sun, Chenghu Shen, James Jeng Chen, Tao Ouyang
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Patent number: 10958158Abstract: An AC/DC converter is operative to receive, via AC input terminals, an AC input signal and to transform the AC input signal into a DC output signal. The AC/DC converter comprises a first DC discharge circuit coupled to AC input terminals. The controller comprises a second DC discharge circuit having a controllable switching element for switching the second DC discharge circuit on and off. The second DC discharge circuit is operative to receive a DC discharge current from the first DC discharge circuit; logic associated with the AC/DC converter repeatedly: receives a DC sense signal from the second DC discharge circuit and determines, based on the value of the DC sense signal within a predetermined measurement time period, loss of the AC input signal. In response to determining loss of the AC input signal, the logic controls activation of the second DC discharge circuit depending on the DC sense signal.Type: GrantFiled: September 3, 2019Date of Patent: March 23, 2021Assignee: Infineon Technologies Austria AGInventors: Shih-Jeng Chen, Shi-Heng Hong, Martin Krueger
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Patent number: 10763915Abstract: An echo cancellation training method in a cable modern is provided, comprising receiving an echo cancellation service ID (EC SID) assigned for echo cancellation training, the cable modem receiving the EC SID from a cable head end in an information element (IE) in a map (MAP or P-MAP) defining a time and frequency of upstream transmission opportunities for the cable modem, the EC SID establishing when the cable modem may perform the echo cancellation training in a downstream channel allocated to the cable modem, transmitting an echo cancellation test signal upstream to the cable head end via an upstream channel allocated to the cable modem and in a time slot specified by the received EC SID in the map, and measuring noise in one or more downstream channels allocated to the cable modem, with the noise resulting from the transmission of the echo cancellation test signal on the upstream channel.Type: GrantFiled: May 24, 2018Date of Patent: September 1, 2020Assignee: Futurewei Technologies, Inc.Inventors: Yanbin Sun, James Jeng Chen, Tao Ouyang
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Patent number: 10630401Abstract: A method implemented by a cable modem of a cable network includes sending an upstream test signal during at least one frequency division duplex minislot assigned to the cable modem, receiving other upstream test signals from other cable modems, measuring interference in each received test signal from the other cable modems, and reporting the interference measurement for each received test signal to a cable modem termination system.Type: GrantFiled: September 12, 2017Date of Patent: April 21, 2020Assignee: Futurewei Technologies, Inc.Inventors: Li Zhang, Xiaolong Zhang, James Jeng Chen, Lifan Xu, Fan Wang
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Publication number: 20200120041Abstract: A method for transmitting upstream data in a cable network is provided. The method includes a cable modem (CM) receiving a generic service identifier (G-SID) included in a corresponding information element (IE) in a data over cable service interface specification (DOCSIS) upstream bandwidth allocation MAP message. The G-SID is a unique identifier assigned to the CM. The method includes the CM transmitting the upstream data for one or more service flows of the CM via at least a portion of the CM bandwidth allocation.Type: ApplicationFiled: December 13, 2019Publication date: April 16, 2020Inventors: Yanbin Sun, Chenghu Shen, James Jeng Chen, Tao Ouyang
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Publication number: 20200099287Abstract: An AC/DC converter is operative to receive, via AC input terminals, an AC input signal and to transform the AC input signal into a DC output signal. The AC/DC converter comprises a first DC discharge circuit coupled to AC input terminals. The controller comprises a second DC discharge circuit having a controllable switching element for switching the second DC discharge circuit on and off. The second DC discharge circuit is operative to receive a DC discharge current from the first DC discharge circuit; logic associated with the AC/DC converter repeatedly: receives a DC sense signal from the second DC discharge circuit and determines, based on the value of the DC sense signal within a predetermined measurement time period, loss of the AC input signal. In response to determining loss of the AC input signal, the logic controls activation of the second DC discharge circuit depending on the DC sense signal.Type: ApplicationFiled: September 3, 2019Publication date: March 26, 2020Inventors: Shih-Jeng Chen, Shi-Heng Hong, Martin Krueger
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Patent number: 10523271Abstract: A method, system, and apparatus for calibration for cable modem (CM) echo cancellation (EC) training in full duplex (FDX) coaxial networks is provided. A CM receives a current resource block assignment message (RBA) from a cable modem termination system (CMTS), and determines if designated channels available for assignment as downstream (DS) channels or upstream (US) channels have changed assignment values from a previously received RBA, and if EC training has been performed on the designated channels for the current RBA. If the designated channels have changed assignment values and EC training has not been performed on the designated channels for the current RBA, the CM performs EC training on the designated channels for the current RBA.Type: GrantFiled: June 28, 2018Date of Patent: December 31, 2019Assignee: Futurewei Technologies, Inc.Inventors: Yanbin Sun, James Jeng Chen, Tao Ouyang
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Patent number: 10416367Abstract: A front light module including a light guide plate and a light source is provided. The light guide plate includes a first surface, a second surface and a light entering surface. The second surface is opposite the first surface. The light entering surface has at least one area that is adjacent to the first surface and the second surface. The light source is disposed beside the light entering surface and is configured to illuminate the light guide plate. The at least one area and an optical axis of the light source form a first angle. The first angle is less than 90 degrees. A display module is also provided.Type: GrantFiled: January 7, 2016Date of Patent: September 17, 2019Assignee: E Ink Holdings Inc.Inventors: Chin-Ju Hsu, Yu-Nan Pao, I-Jeng Chen, Sheng-Chieh Tai, Hsin-Tao Huang
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Publication number: 20190246607Abstract: An adjustable dog collar with a breadth that is placed around necks of dogs and has a ladder lock buckle thereof positioned right under their jaws. The collar further has a first and second straps, each has an adjustable diameter to ensure the dog collar would not slip down from the necks of dogs and would not be tightened unlimitedly. Thereby the dog collar prevents suffocation and tracheary injuries of dogs and enables easier control of dogs with less strength needed from the dog owners.Type: ApplicationFiled: February 13, 2018Publication date: August 15, 2019Inventor: CHUNG-JENG CHEN
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Patent number: 10361748Abstract: Disclosed herein is a multi-stage echo cancellation scheme. The disclosed embodiments include an apparatus and method for monitoring and canceling echoes greater than 25 dB in a coaxial cable plant. The method includes obtaining echo channel estimate coefficients from a cable node. The method determines a location and strength of each partial echo in an impulse response using the echo channel estimate coefficients. Optionally, the method determines a frequency response of each partial echo in the impulse response.Type: GrantFiled: January 15, 2018Date of Patent: July 23, 2019Assignee: Futurewei Technologies, Inc.Inventors: Xiaolong Zhang, Fan Wang, Tao Ouyang, Li Zhang, James Jeng Chen
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Patent number: 10299313Abstract: A cable modem is provided that comprises: a base station interface; a cable network interface that connects the cable modem to a cable modem termination system and one or more other cable modems, the cable network interface communicating using orthogonal frequency-division multiple access (OFDMA); a memory storage comprising instructions; and one or more processors in communication with the cable network interface, the base station interface, and the memory storage. The one or more processors execute the instructions to: receive, via the base station interface, coordination data addressed to a first cable modem of the one or more other cable modems; receive, from the cable modem termination system via the cable network interface, an allocation of a resource block in an OFDMA symbol; and transmit, to the first cable modem via the cable network interface, in the allocated resource block in the OFDMA symbol, the coordination data.Type: GrantFiled: October 17, 2017Date of Patent: May 21, 2019Assignee: Futurewei Technologies, Inc.Inventors: James Jeng Chen, Li Zhang
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Publication number: 20190028145Abstract: A method, system, and apparatus for calibration for cable modem (CM) echo cancellation (EC) training in full duplex (FDX) coaxial networks is provided. A CM receives a current resource block assignment message (RBA) from a cable modem termination system (CMTS), and determines if designated channels available for assignment as downstream (DS) channels or upstream (US) channels have changed assignment values from a previously received RBA, and if EC training has been performed on the designated channels for the current RBA. If the designated channels have changed assignment values and EC training has not been performed on the designated channels for the current RBA, the CM performs EC training on the designated channels for the current RBA.Type: ApplicationFiled: June 28, 2018Publication date: January 24, 2019Inventors: Yanbin Sun, James Jeng Chen, Tao Ouyang
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Patent number: 10180526Abstract: A front light module including a light guide plate, a light source, a transparent cover lens and an annular connecting unit is provided. The light guide plate includes a first surface, a plurality of micro-structure groups, a second surface and a light entering surface. The first surface includes a first area and a second area surrounding the first area. The micro-structure groups are disposed on the first surface and within the first area. The micro-structure groups have a plurality of adjacent micro-structures, and the micro-structures groups are separate from each other. The light entering surface connects the first surface and the second surface. The light source is disposed beside the light entering surface. The annular connecting unit connects the second area of the first surface and the transparent cover lens, and keeps a gap between the micro-structure groups and the transparent cover lens. A display device is also provided.Type: GrantFiled: March 5, 2015Date of Patent: January 15, 2019Assignee: E Ink Holdings Inc.Inventors: Yu-Nan Pao, Chia-Chuang Hu, I-Jeng Chen, Chin-Ju Hsu, Hsin-Tao Huang
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Publication number: 20180343033Abstract: An echo cancellation training method in a cable modern is provided, comprising receiving an echo cancellation service ID (EC SID) assigned for echo cancellation training, the cable modem receiving the EC SID from a cable head end in an information element (IE) in a map (MAP or P-MAP) defining a time and frequency of upstream transmission opportunities for the cable modem, the EC SID establishing when the cable modem may perform the echo cancellation training in a downstream channel allocated to the cable modem, transmitting an echo cancellation test signal upstream to the cable head end via an upstream channel allocated to the cable modem and in a time slot specified by the received EC SID in the map, and measuring noise in one or more downstream channels allocated to the cable modem, with the noise resulting from the transmission of the echo cancellation test signal on the upstream channel.Type: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventors: Yanbin Sun, James Jeng Chen, Tao Ouyang
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Patent number: 10139545Abstract: A front light display device includes a reflective display module, a light guide plate, an optical clear adhesive, plural microstructures, and a light source. The light guide plate has a first surface and a second surface opposite to the first surface, and a third surface adjacent to the first and second surfaces. The light guide plate is made of a material including glass. The optical clear adhesive is located between the reflective display module and the first surface of the light guide plate. The microstructures are located on the first surface of the light guide plate. The light source faces the third surface of the light guide plate.Type: GrantFiled: September 17, 2015Date of Patent: November 27, 2018Assignee: E Ink Holdings Inc.Inventors: Sheng-Chieh Tai, I-Jeng Chen, Hsin-Tao Huang
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Publication number: 20180219577Abstract: Disclosed herein is a multi-stage echo cancelation scheme. The disclosed embodiments include an apparatus and method for monitoring and canceling echoes greater than 25 dB in a coaxial cable plant. The method includes obtaining echo channel estimate coefficients from a cable node. The method determines a location and strength of each partial echo in an impulse response using the echo channel estimate coefficients. Optionally, the method determines a frequency response of each partial echo in the impulse response.Type: ApplicationFiled: January 15, 2018Publication date: August 2, 2018Inventors: Xiaolong Zhang, Fan Wang, Tao Ouyang, Li Zhang, James Jeng Chen