Patents by Inventor Yufei Guo

Yufei Guo 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).

  • Accessing network based content items by a mobile device while offline
    Patent number: 11809381
    Abstract: Disclosed are systems and methods of accessing content items stored at a content management system by a mobile device, when the mobile device is not communicatively coupled to the content management system. The content management system can receive an indication to mark a content item (e.g., folder and the content items associated with the folder) as available to a mobile device when the mobile device is offline. The content management system can mark the content item, and any content items associated with the content item, for offline access by the mobile device and determine a synchronization schedule for the content item(s). The content management system can then initially send to the mobile device, the marked content item(s) in accordance with the synchronization schedule. While offline, the mobile device can make changes to the marked content items. The changes can be synchronized between the mobile device and content management system when the mobile device is online.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: November 7, 2023
    Assignee: Dropbox, Inc.
    Inventors: Aakash Kambuj, Vinod Valloppillil, Yufei Guo, Rodrigo Gomez Avila, Calvin Low, William R. Fraser, David Zhang
  • ACCESSING NETWORK BASED CONTENT ITEMS BY A MOBILE DEVICE WHILE OFFLINE
    Publication number: 20220318201
    Abstract: Disclosed are systems and methods of accessing content items stored at a content management system by a mobile device, when the mobile device is not communicatively coupled to the content management system. The content management system can receive an indication to mark a content item (e.g., folder and the content items associated with the folder) as available to a mobile device when the mobile device is offline. The content management system can mark the content item, and any content items associated with the content item, for offline access by the mobile device and determine a synchronization schedule for the content item(s). The content management system can then initially send to the mobile device, the marked content item(s) in accordance with the synchronization schedule. While offline, the mobile device can make changes to the marked content items. The changes can be synchronized between the mobile device and content management system when the mobile device is online.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 6, 2022
    Inventors: Aakash Kambuj, Vinod Valloppillil, Yufei Guo, Rodrigo Gomez Avila, Calvin Low, William R. Fraser, David Zhang
  • Accessing network based content items by a mobile device while offline
    Patent number: 11372816
    Abstract: Disclosed are systems and methods of accessing content items stored at a content management system by a mobile device, when the mobile device is not communicatively coupled to the content management system. The content management system can receive an indication to mark a content item (e.g., folder and the content items associated with the folder) as available to a mobile device when the mobile device is offline. The content management system can mark the content item, and any content items associated with the content item, for offline access by the mobile device and determine a synchronization schedule for the content item(s). The content management system can then initially send to the mobile device, the marked content item(s) in accordance with the synchronization schedule. While offline, the mobile device can make changes to the marked content items. The changes can be synchronized between the mobile device and content management system when the mobile device is online.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 28, 2022
    Assignee: Dropbox, Inc.
    Inventors: Aakash Kambuj, Vinod Valloppillil, Yufei Guo, Rodrigo Gomez Avila, Calvin Low, William R. Fraser, David Zhang
  • Robust communication system for guaranteed message sequencing with the detection of duplicate senders
    Patent number: 10795910
    Abstract: Guaranteed message sequencing between a first and second database is described. An example method includes maintaining first state information associated with the first database at the first database, where second state information associated with the first database is maintained at the second database. The client sends, to the second database, a message describing changed rows between the first database and the second database since a last synchronization and the first state information. The client subsequently receives, from the second database, status of the last synchronization, where the status is determined by the second database based on the first state information and the second state information.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: October 6, 2020
    Assignee: SYBASE, INC.
    Inventors: Yufei Guo, Tim McClements, Michael Thode, Michael Vander Ploeg
  • ACCESSING NETWORK BASED CONTENT ITEMS BY A MOBILE DEVICE WHILE OFFLINE
    Publication number: 20180189317
    Abstract: Disclosed are systems and methods of accessing content items stored at a content management system by a mobile device, when the mobile device is not communicatively coupled to the content management system. The content management system can receive an indication to mark a content item (e.g., folder and the content items associated with the folder) as available to a mobile device when the mobile device is offline. The content management system can mark the content item, and any content items associated with the content item, for offline access by the mobile device and determine a synchronization schedule for the content item(s). The content management system can then initially send to the mobile device, the marked content item(s) in accordance with the synchronization schedule. While offline, the mobile device can make changes to the marked content items. The changes can be synchronized between the mobile device and content management system when the mobile device is online.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 5, 2018
    Inventors: Aakash Kambuj, Vinod Valloppillil, Yufei Guo, Rodrigo Gomez Avila, Calvin Low, William R. Fraser, David Zhang
  • ROBUST COMMUNICATION SYSTEM FOR GUARANTEED MESSAGE SEQUENCING WITH THE DETECTION OF DUPLICATE SENDERS
    Publication number: 20150186485
    Abstract: Guaranteed message sequencing between a first and second database is described. An example method includes maintaining first state information associated with the first database at the first database, where second state information associated with the first database is maintained at the second database. The client sends, to the second database, a message describing changed rows between the first database and the second database since a last synchronization and the first state information. The client subsequently receives, from the second database, status of the last synchronization, where the status is determined by the second database based on the first state information and the second state information.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 2, 2015
    Inventors: Yufei Guo, Tim McClements, Michael Thode, Michael Vander Ploeg