Patents by Inventor An Chan

An Chan 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).

  • Patent number: 12272349
    Abstract: A method for representing an intended prosody in synthesized speech includes receiving a text utterance having at least one word, and selecting an utterance embedding for the text utterance. Each word in the text utterance has at least one syllable and each syllable has at least one phoneme. The utterance embedding represents an intended prosody. For each syllable, using the selected utterance embedding, the method also includes: predicting a duration of the syllable by decoding a prosodic syllable embedding for the syllable based on attention by an attention mechanism to linguistic features of each phoneme of the syllable and generating a plurality of fixed-length predicted frames based on the predicted duration for the syllable.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: April 8, 2025
    Assignee: Google LLC
    Inventors: Robert Clark, Chun-An Chan, Vincent Wan
  • Patent number: 12140126
    Abstract: A plasma thruster comprises a cylindrical discharge channel (1), an injector (4), a RF antenna surrounding the discharge channel (1) and a device (3) for generating an axial static magnetic field in the discharge channel (1). The RF antenna is a cylindrical birdcage antenna (2) formed of several electrically conductive parallel legs (10) connected by two end rings (11) including capacitors (12) between adjacent legs (10) in each case. The two end rings (11) with the capacitors (12) are formed on two printed circuit boards (14) to which the legs (10) are attached, said printed circuit boards (14) having a through opening for the discharge channel (1). The antenna maximizes electrical coupling efficiency and provides resulting electromagnetic fields for quasi-neutral plasma acceleration along with the magnetic field effect provided by the externally applied magnetic field.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: November 12, 2024
    Assignee: Universität Stuttgart
    Inventors: Francesco Romano, Yung-An Chan, Georg Herdrich, Stefanos Fasoulas
  • Publication number: 20230182929
    Abstract: A plasma thruster comprises a cylindrical discharge channel (1), an injector (4), a RF antenna surrounding the discharge channel (1) and a device (3) for generating an axial static magnetic field in the discharge channel (1). The RF antenna is a cylindrical birdcage antenna (2) formed of several electrically conductive parallel legs (10) connected by two end rings (11) including capacitors (12) between adjacent legs (10) in each case. The two end rings (11) with the capacitors (12) are formed on two printed circuit boards (14) to which the legs (10) are attached, said printed circuit boards (14) having a through opening for the discharge channel (1). The antenna maximizes electrical coupling efficiency and provides resulting electromagnetic fields for quasi-neutral plasma acceleration along with the magnetic field effect provided by the externally applied magnetic field.
    Type: Application
    Filed: December 8, 2022
    Publication date: June 15, 2023
    Inventors: Francesco ROMANO, Yung-An CHAN, Georg HERDRICH, Stefanos FASOULAS
  • Patent number: 11514888
    Abstract: A method includes receiving an input text utterance to be synthesized into expressive speech having an intended prosody and a target voice and generating, using a first text-to-speech (TTS) model, an intermediate synthesized speech representation tor the input text utterance. The intermediate synthesized speech representation possesses the intended prosody. The method also includes providing the intermediate synthesized speech representation to a second TTS model that includes an encoder portion and a decoder portion. The encoder portion is configured to encode the intermediate synthesized speech representation into an utterance embedding that specifies the intended prosody. The decoder portion is configured to process the input text utterance and the utterance embedding to generate an output audio signal of expressive speech that has the intended prosody specified by the utterance embedding and speaker characteristics of the target voice.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 29, 2022
    Assignee: Google LLC
    Inventors: Lev Finkelstein, Chun-An Chan, Byungha Chun, Ye Jia, Yu Zhang, Robert Andrew James Clark, Vincent Wan
  • Publication number: 20210282701
    Abstract: A system performs concurrent detection and early detection of epileptic seizure episodes, based on scalp electroencephalogram (EEG) of a patient collected through a data acquisition device in the course of the patient's normal daily activities. An early detection model, which is trained and retrained applying machine learning techniques at predetermined intervals on the collected data, enables issuing of an early warning of an upcoming seizure episode to allow the patient to take necessary preparatory actions (e.g., seeking a safe location for the episode to happen and alerting care-givers).
    Type: Application
    Filed: March 8, 2021
    Publication date: September 16, 2021
    Inventors: Caleb K. Chan, An Chan, Jeffrey M. Chung, Li Xu, Frank K. Tam
  • Patent number: 10986491
    Abstract: Method and apparatus for adaptive data collection operations where a first user equipment (UE) is paired to a second UE. The first UE may receive capability data from the second UE, the capability data comprising cellular capabilities of the second UE. The first UE may further collect service history data for the second UE, where the service history data corresponds to the cellular capabilities indicated by the capability data. The first UE may further transmit the service history data to the second UE.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Vijay Venkataraman, Srinivasan Nimmala, An Chan, Zhiwei Wang, Srirang A. Lovlekar, Srinivas Burugupalli
  • Patent number: 10960209
    Abstract: Modulation of neural signaling of a branch of the GSN supplying the adrenal gland can regulate the secretion of signaling molecules from the adrenal medulla. In particular, epinephrine, norepinephrine and enkephalin release can be independently regulated.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 30, 2021
    Assignees: Galvani Bioelectronics Limited, Case Western Reserve University
    Inventors: Arun Sridhar, Corey Smith, Kyle Wolf, Georgy Zarkua, Shyue-An Chan
  • Patent number: 10966248
    Abstract: This disclosure relates to providing coexistence features for cellular communication in unlicensed spectrum. A wireless device may communicate with a cellular base station in accordance with an original communication configuration. The wireless device may determine that a communication activity is occurring at the wireless device that has a duration longer than a duration threshold. The wireless device may provide an indication to the cellular base station to modify the communication configuration with respect to operation in an unlicensed frequency band based at least in part on determining that a communication activity is occurring at the wireless device that has a duration longer than the duration threshold. The wireless device may communicate with the cellular base station in accordance with a modified communication configuration.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 30, 2021
    Assignee: Apple Inc.
    Inventors: Murtaza A. Shikari, Hariharan Sukumar, An Chan, Srirang A. Lovlekar, Vijay Venkataraman, Srinivas Burugupalli, Srinivasan Nimmala
  • Patent number: 10726956
    Abstract: The fever epidemic detection system comprises a detection module, a control module and a communication module. The detection module measures and obtains a body-temperature measured value. The control module comprises a first operation unit, a determination unit and an alert unit. The first operation unit receives and calibrates the body-temperature measured value with a calibration factor, and generates a body-temperature calibrated value. The determination unit receives and determines whether the body-temperature calibrated value is within a preset normal body-temperature range and generates a determination result. The alert unit receives the determination result. The communication module transmits data to an external device. The alert unit generates a first alerting message, if the determination result shows that the body-temperature calibrated value is not within a preset normal body-temperature range.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 28, 2020
    Assignee: NATIONAL TAIWAN UNIVERSITY
    Inventors: Joe-Air Jiang, Chien-Hao Wang, Ya-An Chan, Lin-Kuei Su, Cheng-Yue Liu, Po-Han Chen, Wei-Sheng Chen, Ching-Ya Tseng
  • Publication number: 20200179699
    Abstract: Modulation of neural signaling of a branch of the GSN supplying the adrenal gland can regulate the secretion of signaling molecules from the adrenal medulla. In particular, epinephrine, norepinephrine and enkephalin release can be independently regulated.
    Type: Application
    Filed: July 25, 2017
    Publication date: June 11, 2020
    Inventors: Arun SRIDHAR, Corey SMITH, Kyle WOLF, Georgy ZARKUA, Shyue-An CHAN
  • Publication number: 20200037150
    Abstract: Method and apparatus for adaptive data collection operations where a first user equipment (UE) is paired to a second UE. The first UE may receive capability data from the second UE, the capability data comprising cellular capabilities of the second UE. The first UE may further collect service history data for the second UE, where the service history data corresponds to the cellular capabilities indicated by the capability data. The first UE may further transmit the service history data to the second UE.
    Type: Application
    Filed: April 7, 2017
    Publication date: January 30, 2020
    Inventors: Vijay VENKATARAMAN, Srinivasan NIMMALA, An CHAN, Zhiwei WANG, Srirang A. LOVLEKAR, Srinivas BURUGUPALLI
  • Patent number: 10547558
    Abstract: Methods, systems and apparatus for a user equipment to implement a dynamic discard timer. The user equipment may generate a packet for transmission and store the packet in a buffer of the user equipment. The user equipment may then generate a timeout value for a discard timer for the buffer, where the discard timer discards the packet from the buffer when the timeout value is reached. After a predetermined amount of time, the user equipment may determine whether the packet has been discarded from the buffer and, when it is determined that the packet has not been discarded from the buffer, update the timeout value.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 28, 2020
    Assignee: Apple Inc.
    Inventors: An Chan, Soo Young Lee, Abhishek A. Bhonsle, Anish K. Goyal, Madhusudan Chaudhary, Wanping Zhang, Tahir Shamim, Raghuveer Mallikarjunan
  • Publication number: 20190132876
    Abstract: This disclosure relates to providing coexistence features for cellular communication in unlicensed spectrum. A wireless device may communicate with a cellular base station in accordance with an original communication configuration. The wireless device may determine that a communication activity is occurring at the wireless device that has a duration longer than a duration threshold. The wireless device may provide an indication to the cellular base station to modify the communication configuration with respect to operation in an unlicensed frequency band based at least in part on determining that a communication activity is occurring at the wireless device that has a duration longer than the duration threshold. The wireless device may communicate with the cellular base station in accordance with a modified communication configuration.
    Type: Application
    Filed: September 27, 2018
    Publication date: May 2, 2019
    Inventors: Murtaza A. Shikari, Hariharan Sukumar, An Chan, Srirang A. Lovlekar, Vijay Venkataraman, Srinivas Burugupalli, Srinivasan Nimmala
  • Publication number: 20180351873
    Abstract: Methods, systems and apparatus for a user equipment to implement a dynamic discard timer. The user equipment may generate a packet for transmission and store the packet in a buffer of the user equipment. The user equipment may then generate a timeout value for a discard timer for the buffer, where the discard timer discards the packet from the buffer when the timeout value is reached. After a predetermined amount of time, the user equipment may determine whether the packet has been discarded from the buffer and, when it is determined that the packet has not been discarded from the buffer, update the timeout value.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 6, 2018
    Inventors: An CHAN, Soo Young LEE, Abhishek A. BHONSLE, Anish K. GOYAL, Madhusudan CHAUDHARY, Wanping ZHANG, Tahir SHAMIM, Raghuveer MALLIKARJUNAN
  • Publication number: 20180046778
    Abstract: The fever epidemic detection system comprises a detection module, a control module and a communication module. The detection module measures and obtains a body-temperature measured value. The control module comprises a first operation unit, a determination unit and an alert unit. The first operation unit receives and calibrates the body-temperature measured value with a calibration factor, and generates a body-temperature calibrated value. The determination unit receives and determines whether the body-temperature calibrated value is within a preset normal body-temperature range and generates a determination result. The alert unit receives the determination result. The communication module transmits data to an external device. The alert unit generates a first alerting message, if the determination result shows that the body-temperature calibrated value is not within a preset normal body-temperature range.
    Type: Application
    Filed: April 15, 2016
    Publication date: February 15, 2018
    Inventors: JOE-AIR JIANG, CHIEN-HAO WANG, YA-AN CHAN, LIN-KUEI SU, CHENG-YUE LIU, PO-HAN CHEN, WEI-SHENG CHEN, CHING-YA TSENG
  • Publication number: 20130051380
    Abstract: A method of adaptively controlling the data rate in a transmission channel carrying a packet data signal corresponding to a data stream of variable data rate is suggested. In accordance with the method the variability of the transmission channel, the data rate requirement of the data stream, and the capacity of the transmission channel are determined. Then, the data rate is adapted so that the transmission channel capacity exceeds the data rate requirement of the data stream, and the next time instant for data rate probing and adaptation is determined based upon the transmission channel variability and data stream rate requirement.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 28, 2013
    Inventors: Henrik Lundgren, Theodoros Salonidis, An Chan
  • Publication number: 20050071365
    Abstract: A method for keyword correlation analysis is provided. The method obtains important words from a document repository, and then calculates correlations among the important words according to at least one of the occurring frequencies and occurring positions of the important words. Thereafter, keywords, which are highly correlated, can be obtained according to the correlations among the important words.
    Type: Application
    Filed: February 24, 2004
    Publication date: March 31, 2005
    Inventors: Jiang-Liang Hou, Chuan-An Chan