Patents by Inventor Chao-Hsun CHENG

Chao-Hsun CHENG 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).

  • Method and apparatus for standby with a dual-standby modem and establishing single connection for one subscriber identity card
    Patent number: 9338805
    Abstract: A method of PS path selection is provided. A single SIM card with dual standby feature UE is equipped with a first modem operated in a first RAT for both PS and CS services, and a second modem operated in a second RAT for PS only service. The UE camps on a cell using the first modem in a mobile communication network. The UE attaches to the network for PS service using the second modem. The UE also selects the second modem to form a PS path for routing PS data via the second modem. The UE then triggers CS service via the first modem. The UE switches the PS path from the second modem to the first modem upon triggering the CS service if the first modem allows simultaneous PS and CS service. After the CS service is terminated, the UE optionally triggers the second modem recovery mechanism.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 10, 2016
    Assignee: MEDIATEK, INC.
    Inventor: Chao-Hsun Cheng
  • Method and Apparatus for Standby with a Dual-Standby Modem and Establishing Single Connection for One Subscriber Identity Card
    Publication number: 20140140287
    Abstract: A method of PS path selection is provided. A single SIM card with dual standby feature UE is equipped with a first modem operated in a first RAT for both PS and CS services, and a second modem operated in a second RAT for PS only service. The UE camps on a cell using the first modem in a mobile communication network. The UE attaches to the network for PS service using the second modem. The UE also selects the second modem to form a PS path for routing PS data via the second modem. The UE then triggers CS service via the first modem. The UE switches the PS path from the second modem to the first modem upon triggering the CS service if the first modem allows simultaneous PS and CS service. After the CS service is terminated, the UE optionally triggers the second modem recovery mechanism.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 22, 2014
    Applicant: MEDIATEK, ICN.
    Inventor: Chao-Hsun Cheng
  • NETWORK SEARCHING METHODS AND APPARATUSES FOR MULTI-MODE USER EQUIPMENT
    Publication number: 20130059586
    Abstract: A network searching method for a multi-mode user equipment having a first radio access technology module and a second radio access technology module includes camping on a current cell by the user equipment via the first radio access technology module; obtaining information broadcast by a system of the second radio access technology module via the first radio access technology module when network environment corresponding to the first radio access technology module changes; and instructing the second radio access technology module to perform a network searching.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 7, 2013
    Applicant: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Zengyu HAO, Junzhen QIN, Xinwei CUI, Chao-Hsun CHENG