Patents by Inventor Xiantang CHANG

Xiantang 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).

  • Patent number: 11257492
    Abstract: Embodiments of the present disclosure provide a voice interaction method and apparatus for a customer service. The method includes: receiving customer demand information from a customer demand end, the customer demand information including a customer demand end identifier and a voice demand instruction; performing a speech recognition on the voice demand instruction; and if a demanded service type in the voice demand instruction is identified, sending a service-providing request to a service management system based on the demanded service type, the service-providing request including the customer demand end identifier and the demanded service type. The embodiments of the present disclosure realize the interaction between the customer demand end, the service management system and the customer by adopting the voice interaction method, so that the customer's demand can be quickly and intelligently recognized and the corresponding service can be provided.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: February 22, 2022
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventor: Xiantang Chang
  • Patent number: 11188380
    Abstract: A method and apparatus for processing a task in a smart device are provided. A specific embodiment of the method includes: receiving service information sent by a server, the service information comprising task description information in a predetermined data format; analyzing the service information based on the predetermined data format to determine a to-be-processed task; arranging the to-be-processed task into a to-be-processed task queue; and processing a plurality of the to-be-processed tasks in the to-be-processed task queue. The embodiment improves the processing efficiency of to-be-processed tasks.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: November 30, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang Chang, Qian Shen
  • Patent number: 11037560
    Abstract: The present disclosure provides a method, an apparatus and a storage medium for a wake-up processing of an application, a first voice data input by a user is collected and recognized, and a wake-up operation is performed on a target application each time when it is recognized that a wake-up word of the target application is included in the first voice data, where the wake-up word of the target application appears one or more times in the first voice data. The method, apparatus and storage medium for the wake-up processing of the application provided by the present disclosure can wake up the target application when the wake-up word appears one or more times in the first voice data input by the user, thereby improving a wake-up accuracy of the application.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: June 15, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.X
    Inventor: Xiantang Chang
  • Patent number: 10964317
    Abstract: The present disclosure provides a voice wakeup method, apparatus and system, a cloud server and a readable medium. The method comprises: receiving a first request input by the user in a voice manner after a smart device enters a voice recognition phase; judging whether the first request after semantic parsing is consistent with pre-stored wakeup words; determining that the received first request is used to re-wake up the smart device if the first request is consistent with the pre-stored wakeup words. According to the above technical solutions, after the smart device enters the voice recognition phase, if the received first request is the wakeup words, the smart device does not perform service satisfaction processing for the first request. Capability of recognizing that the first request is re-wakeup does not cause a command recognition error and thereby can satisfy the user's expectation.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: March 30, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang Chang, Lifeng Zhao, Rongjie Chen
  • Patent number: 10923119
    Abstract: The present disclosure provides a speech data processing method and apparatus, a device and a storage medium, wherein the method comprises: a client obtains speech data, uses a speech wakeup engine to perform wakeup recognition for the obtained speech data, and stores the obtained speech data in a cyclic buffer queue; the client obtains a wakeup recognition result returned by the speech wakeup engine upon completion of the wakeup recognition, and if the wakeup recognition result is acknowledged wakeup and it is determined that there occurs a case of oneshot currently, determines an interception starting position and obtains buffer data in the cyclic buffer queue from the interception staring position to an end of the queue, the buffer data at least including the content to be recognized; the client sends the buffer data to a speech recognition engine so that the speech recognition engine performs speech recognition for the content to be recognized in the buffer data.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: February 16, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang Chang, Weigao Li, Sheng Qian
  • Patent number: 10908870
    Abstract: The present disclosure provides an audio playing method and device. The method may include the following. When a loading speed of a present audio file containing target audio content is changed during the present audio file is played, a target definition for playing the target audio content is determined. It is determined whether to report an audio file acquisition request to a server based on a preset strategy. When it is determined to report the audio file acquisition request to the server, the audio file acquisition request is reported to the server. The audio file acquisition request may include the target definition and an identifier of a target audio file containing the target audio content. An audio playing instruction sent by the server is acquired. The audio playing instruction may include the target audio file corresponding to the identifier and the target definition. The target audio file is played.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: February 2, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang Chang, Lifeng Zhao, Shiwei Yan
  • Patent number: 10783884
    Abstract: The present disclosure provides an electronic device-awakening method and apparatus, a device and a computer-readable storage medium. In embodiments of the present disclosure, the user's speech wakeup instruction which is used to awaken the electronic device is obtained, and then an audio data file is selected from at least two audio data files according to the speech wakeup instruction, as a wakeup answer file of the electronic device, so that the wakeup answer file of the electronic device can be played. Since there are more than one selectable audio data files, many types of prompt tones can be provided, thereby achieving the purpose of providing many types of wakeup prompts.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 22, 2020
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Rongjie Chen, Lifeng Zhao, Xiantang Chang, Shiwei Yan
  • Publication number: 20200151258
    Abstract: The present disclosure provides a method, apparatus, computer device and storage medium for implementing speech interaction, wherein the method comprises: a content server obtaining a user's speech information from a client device, and completing the speech interaction in a first manner; the first manner comprises: sending the speech information to an automatic speech recognition server and obtaining a partial speech recognition result returned by the automatic speech recognition server each time; after determining that voice activity detection starts and if it is determined through semantic understanding that the partial speech recognition result obtained each time already includes entire content that the user hopes to express, taking the partial speech recognition result as a final speech recognition result, obtaining a response speech corresponding to the final speech recognition result, and returning the response speech to the client device.
    Type: Application
    Filed: August 30, 2019
    Publication date: May 14, 2020
    Applicant: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Chao YUAN, Xiantang CHANG, Huailiang CHEN
  • Publication number: 20200035241
    Abstract: A method, a device and a computer storage medium for speech interaction are disclosed. The method includes: receiving speech data transmitted by a first terminal device; obtaining a speech recognition result and a voiceprint recognition result of the speech data; obtaining a response text for the speech recognition result, and performing speech conversion for the response text with the voiceprint recognition result; and transmitting audio data obtained from the conversion to the first terminal device. Speech self-adaptation of human-machine interaction may be achieved, and the real feeling and interest of human-machine speech interaction may be enhanced and improved, respectively.
    Type: Application
    Filed: May 29, 2019
    Publication date: January 30, 2020
    Applicant: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventor: Xiantang CHANG
  • Publication number: 20200007684
    Abstract: Embodiments of the present disclosure provide a voice interaction method and apparatus for a customer service. The method includes: receiving customer demand information from a customer demand end, the customer demand information including a customer demand end identifier and a voice demand instruction; performing a speech recognition on the voice demand instruction; and if a demanded service type in the voice demand instruction is identified, sending a service-providing request to a service management system based on the demanded service type, the service-providing request including the customer demand end identifier and the demanded service type. The embodiments of the present disclosure realize the interaction between the customer demand end, the service management system and the customer by adopting the voice interaction method, so that the customer's demand can be quickly and intelligently recognized and the corresponding service can be provided.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 2, 2020
    Inventor: Xiantang CHANG
  • Publication number: 20190369949
    Abstract: Embodiments of the present disclosure allow a first audio focus channel to play audio based on an audio focus by receiving a play request from the first audio focus channel, controlling, based on the play request, a second audio focus channel which is currently playing audio to stop playing, and reassigning to the first audio focus channel the audio focus originally assigned to the second audio focus. Therefore, the embodiments of the present disclosure can ensure that the audio for the newly added play request can be played immediately without distinguishment of the type of requested audio, in particular, it is possible to ensure that the newly added audio (Audio) can be played immediately and user experience is improved.
    Type: Application
    Filed: February 18, 2019
    Publication date: December 5, 2019
    Inventor: XIANTANG CHANG
  • Publication number: 20190304449
    Abstract: The present disclosure provides a method, an apparatus and a storage medium for a wake-up processing of an application, a first voice data input by a user is collected and recognized, and a wake-up operation is performed on a target application each time when it is recognized that a wake-up word of the target application is included in the first voice data, where the wake-up word of the target application appears one or more times in the first voice data. The method, apparatus and storage medium for the wake-up processing of the application provided by the present disclosure can wake up the target application when the wake-up word appears one or more times in the first voice data input by the user, thereby improving a wake-up accuracy of the application.
    Type: Application
    Filed: December 28, 2018
    Publication date: October 3, 2019
    Inventor: XIANTANG CHANG
  • Publication number: 20190163524
    Abstract: A method and apparatus for processing a task in a smart device are provided. A specific embodiment of the method includes: receiving service information sent by a server, the service information comprising task description information in a predetermined data format; analyzing the service information based on the predetermined data format to determine a to-be-processed task; arranging the to-be-processed task into a to-be-processed task queue; and processing a plurality of the to-be-processed tasks in the to-be-processed task queue. The embodiment improves the processing efficiency of to-be-processed tasks.
    Type: Application
    Filed: September 18, 2018
    Publication date: May 30, 2019
    Applicant: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang Chang, Qian Shen
  • Publication number: 20190122662
    Abstract: The present disclosure provides a speech data processing method and apparatus, a device and a storage medium, wherein the method comprises: a client obtains speech data, uses a speech wakeup engine to perform wakeup recognition for the obtained speech data, and stores the obtained speech data in a cyclic buffer queue; the client obtains a wakeup recognition result returned by the speech wakeup engine upon completion of the wakeup recognition, and if the wakeup recognition result is acknowledged wakeup and it is determined that there occurs a case of oneshot currently, determines an interception starting position and obtains buffer data in the cyclic buffer queue from the interception staring position to an end of the queue, the buffer data at least including the content to be recognized; the client sends the buffer data to a speech recognition engine so that the speech recognition engine performs speech recognition for the content to be recognized in the buffer data.
    Type: Application
    Filed: December 28, 2017
    Publication date: April 25, 2019
    Applicant: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Xiantang CHANG, Weigao Li, Sheng Qian
  • Publication number: 20190012134
    Abstract: The present disclosure provides an audio playing method and device. The method may include the following. When a loading speed of a present audio file containing target audio content is changed during the present audio file is played, a target definition for playing the target audio content is determined. It is determined whether to report an audio file acquisition request to a server based on a preset strategy. When it is determined to report the audio file acquisition request to the server, the audio file acquisition request is reported to the server. The audio file acquisition request may include the target definition and an identifier of a target audio file containing the target audio content. An audio playing instruction sent by the server is acquired. The audio playing instruction may include the target audio file corresponding to the identifier and the target definition. The target audio file is played.
    Type: Application
    Filed: June 11, 2018
    Publication date: January 10, 2019
    Inventors: Xiantang CHANG, Lifeng ZHAO, Shiwei YAN
  • Publication number: 20190013021
    Abstract: The present disclosure provides a voice wakeup method, apparatus and system, a cloud server and a readable medium. The method comprises: receiving a first request input by the user in a voice manner after a smart device enters a voice recognition phase; judging whether the first request after semantic parsing is consistent with pre-stored wakeup words; determining that the received first request is used to re-wake up the smart device if the first request is consistent with the pre-stored wakeup words. According to the above technical solutions, after the smart device enters the voice recognition phase, if the received first request is the wakeup words, the smart device does not perform service satisfaction processing for the first request. Capability of recognizing that the first request is re-wakeup does not cause a command recognition error and thereby can satisfy the user's expectation.
    Type: Application
    Filed: December 28, 2017
    Publication date: January 10, 2019
    Applicant: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD
    Inventors: Xiantang Chang, Lifeng Zhao, Rongjie Chen
  • Publication number: 20190013020
    Abstract: The present disclosure provides an electronic device-awakening method and apparatus, a device and a computer-readable storage medium. In embodiments of the present disclosure, the user's speech wakeup instruction which is used to awaken the electronic device is obtained, and then an audio data file is selected from at least two audio data files according to the speech wakeup instruction, as a wakeup answer file of the electronic device, so that the wakeup answer file of the electronic device can be played. Since there are more than one selectable audio data files, many types of prompt tones can be provided, thereby achieving the purpose of providing many types of wakeup prompts.
    Type: Application
    Filed: December 28, 2017
    Publication date: January 10, 2019
    Applicant: Baidu Online Network Technology (Beijing) Co., Ltd
    Inventors: Rongjie Chen, Lifeng Zhao, Xiantang Chang, Shiwei Yan