Patents by Inventor Yilin Zhao

Yilin Zhao 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: 7447765
    Abstract: A method and apparatus method of filtering packet data for an anonymous user device in a packet data network communication system includes a first step of defining a special context information element containing special context information. A next step includes sending the special context information element in an activate packet data protocol (PDP) context request to a network to initiate a call from an anonymous user device. A next step includes receiving the activate PDP context request and the special context information element. A next step includes configuring the data packets so that only the special context is allowed. A next step includes assigning an interim identity and interim IP address to the user device. A next step includes mapping the data packets of the configuring step to the interim IP address of the user device. A next step includes defining permissible routing identities per the special context.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: November 4, 2008
    Assignee: Motorola, Inc.
    Inventors: Naveen Aerrabotu, Lawrence A. Willis, Mark E. Pecen, Yilin Zhao
  • Patent number: 7359706
    Abstract: A method and apparatus to transmit data between a communication network and a mobile station just before prior to the mobile station switching from a fast data rate mode, such as digital mode, to a slow data rate mode, such as analog mode. The mobile station requests or the communication network transmits data prior to the mobile station entering the slow data rate mode, therefore eliminating the need to transmit data over a slow data rate mode, such as analog mode.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: April 15, 2008
    Assignee: Motorola Inc.
    Inventor: Yilin Zhao
  • Publication number: 20070281737
    Abstract: A method and apparatus to transmit data between a communication network and a mobile station just before prior to the mobile station switching from a fast data rate mode, such as digital mode, to a slow data rate mode, such as analog mode. The mobile station requests or the communication network transmits data prior to the mobile station entering the slow data rate mode, therefore eliminating the need to transmit data over a slow data rate mode, such as analog mode.
    Type: Application
    Filed: August 20, 2007
    Publication date: December 6, 2007
    Inventor: Yilin Zhao
  • Publication number: 20070082711
    Abstract: Original multimedia content is created within and communicated by a wireless communication device (10) that includes a transmitter (30), a content memory (90) storing a plurality of content files (100), and a user interface (60). Emergency content is stored within the content memory (90) and at least some of the emergency content is selected from the content memory (90). An original multimedia content file (140) is created including the selected emergency content. A message including the original multimedia content (140) is then transmitted by the transmitter (30) via a wireless communication system (75) either in response to an emergency user input to the user interface (60) or automatically in response to an emergency event.
    Type: Application
    Filed: December 12, 2006
    Publication date: April 12, 2007
    Applicant: MOTOROLA, INC.
    Inventors: Yilin Zhao, Bo Tan
  • Patent number: 7064706
    Abstract: A cellular network protocol that maintains the reliability of assisted GPS based positioning is taught. An Integrity Monitor (IM) informs mobile stations, their users, or networks of measurement quality and it warns them of failing and failed GPS satellites by isolating them from the effects of these failures. Whenever an unhealthy satellite is detected, its corresponding assistance data will be excluded for delivery or for position determination. In other words, there are two specific aspects to the Integrity Monitor (IM). For DGPS users, it predicts the reliability or quality of the DGPS corrections. For all users, it isolates the mobile position calculation from the effects of GPS satellite failures. The UDRE parameter, nominally output by a reference DGPS receiver, is used to communicate the DGPS quality information, and DGPS corrections are simply excluded for failed satellites.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: June 20, 2006
    Assignee: Motorola, Inc.
    Inventors: Thomas M. King, George J. Geier, Yilin Zhao
  • Publication number: 20050091683
    Abstract: A wireless mobile terminal (10) and method for utilizing digital broadcast content records (204) selected digital broadcast content as received, for example, by a digital broadcast receiver (16) and provides editing of the selected digital broadcast content based on digital rights management data to generate customized clips of information. The selected digital broadcast content is edited (206) to produce mobile terminal edited digital broadcast content that may be, for example, distributed (208) by the mobile terminal to a plurality of peer devices. A broadcast content editor (24) allows for the editing of clips of content wherein the edited clips are then stored in memory as recorded clips for distribution by the mobile terminal. In another embodiment, a network element is remotely controlled by the mobile terminal to effect editing through the mobile terminal at the network element.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 28, 2005
    Applicant: Motorola, Inc.
    Inventors: Arnold Sheynman, Michael Kotzin, Yilin Zhao
  • Publication number: 20040204135
    Abstract: A multimedia editor (160) for use within a wireless communication device (10) includes a user interface (60), a content memory (90), a multimedia editor application (65), one or more decoders (125, 130, 135, 138), and a mixer/synchronizer (150). The multimedia editor (160) creates original multimedia content (140) using voice, singing, text, background sound, as well as music, graphics, image, audio, and video selected from one or more multimedia content (105) stored in the content memory (90).
    Type: Application
    Filed: December 6, 2002
    Publication date: October 14, 2004
    Inventors: Yilin Zhao, Bo Tan
  • Publication number: 20040199914
    Abstract: A method and apparatus method of filtering packet data for an anonymous user device in a packet data network communication system includes a first step of defining a special context information element containing special context information. A next step includes sending the special context information element in an activate packet data protocol (PDP) context request to a network to initiate a call from an anonymous user device. A next step includes receiving the activate PDP context request and the special context information element. A next step includes configuring the data packets so that only the special context is allowed. A next step includes assigning an interim identity and interim IP address to the user device. A next step includes mapping the data packets of the configuring step to the interim IP address of the user device. A next step includes defining permissible routing identities per the special context.
    Type: Application
    Filed: May 14, 2003
    Publication date: October 7, 2004
    Inventors: Naveen Aerrabotu, Lawrence A. Willis, Mark E. Pecen, Yilin Zhao
  • Publication number: 20040190522
    Abstract: A method and apparatus method of filtering packet data for an anonymous user device in a packet data network communication system includes a first step of initiating a call from an anonymous user device on a home network. A next step includes assigning an interim identity and interim IP address to the user device. A next step includes determining a level of service access of the data packets from the user device. A next step includes mapping the level of service access of the user device to the IP address. A next step includes defining permissible routing identities per the level of service access. A next step includes routing the data packets of the call along with the associated IP address to only those location addresses from the defining step.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 30, 2004
    Inventors: Naveen Aerrabotu, Mark E. Pecen, Yilin Zhao
  • Publication number: 20040192252
    Abstract: A method and apparatus for providing callback from a called party to an anonymous initiating user device after a dropped call in a packet data network communication system includes a first step of initiating a call from the user device on an originating network. A next step includes detecting a missing identity of the user device. A next step includes assigning an interim identity to the user device. A next step includes routing the call with the associated interim identity to the called party. A next step includes disconnecting of the call, with the user device roaming to a new network. A next step includes attaching of the user device on the new network with PDP context activation. A next step includes providing the interim identity of the user device and an originating network identity to the new network. A next step includes forwarding a callback of the called party from the originating network to the new network to the user device camped on the new network using the information from the providing step.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 30, 2004
    Inventors: Naveen Aerrabotu, Mark E. Pecen, Yilin Zhao
  • Publication number: 20040192251
    Abstract: A method in a wireless communications network including receiving (310) a network connection request from a subscriber device having an invalid subscriber identity, connecting (340) the subscriber device, from which the network connection request was received, to the wireless communications network for limited purposes only upon determining (320) that the subscriber device has in invalid subscriber identity in the absence of a limited network connection indicator in the network connection request. In some embodiments, a limited attach message indicates that the attach request is for limited purposes.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 30, 2004
    Inventors: Yilin Zhao, Naveen Aerrabotu, Mark E. Pecen, Varalakshmi Likki
  • Publication number: 20040125993
    Abstract: Fingerprint image processing methods for fingerprint security systems, for example, in wireless communications devices, including capturing fingerprint images (320), identifying features from images (330), matching the identified features with reference features (340), and providing access to the device based upon feature matching (350) results. In one embodiment, minutiae features are extracted from the image and matched to reference minutiae features.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Inventors: Yilin Zhao, Peter Zhen-Ping Lo, Harshawardhan Wabgaonkar
  • Patent number: 6756938
    Abstract: Methods for determining the location of a satellite positioning system receiver by determining an estimated location of the receiver (200), transmitting the estimated location of the receiver to a network, determining a reference altitude of the receiver at the network based upon the estimated location of the receiver (210), and determining a new location of the receiver based upon the reference altitude of the receiver (220). In some embodiments, terrain slope is determined at the estimated location for use in updating the estimated location. In some embodiments, satellite information and weighting factors used to estimate receiver location along with other parameters are utilized to update the estimated location.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: June 29, 2004
    Assignee: Motorola, Inc.
    Inventors: Yilin Zhao, Thomas M. King, George J. Geier
  • Publication number: 20030085838
    Abstract: Methods for determining the location of a satellite positioning system receiver by determining an estimated location of the receiver (200), transmitting the estimated location of the receiver to a network, determining a reference altitude of the receiver at the network based upon the estimated location of the receiver (210), and determining a new location of the receiver based upon the reference altitude of the receiver (220). In some embodiments, terrain slope is determined at the estimated location for use in updating the estimated location. In some embodiments, satellite information and weighting factors used to estimate receiver location along with other parameters are utilized to update the estimated location.
    Type: Application
    Filed: November 6, 2001
    Publication date: May 8, 2003
    Inventor: Yilin Zhao
  • Publication number: 20030040331
    Abstract: A method and apparatus to transmit data between a communication network and a mobile station just before prior to the mobile station switching from a fast data rate mode, such as digital mode, to a slow data rate mode, such as analog mode. The mobile station requests or the communication network transmits data prior to the mobile station entering the slow data rate mode, therefore eliminating the need to transmit data over a slow data rate mode, such as analog mode.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 27, 2003
    Inventor: Yilin Zhao
  • Publication number: 20030011511
    Abstract: A cellular network protocol that maintains the reliability of assisted GPS based positioning is taught. An Integrity Monitor (IM) informs mobile stations, their users, or networks of measurement quality and it warns them of failing and failed GPS satellites by isolating them from the effects of these failures. Whenever an unhealthy satellite is detected, its corresponding assistance data will be excluded for delivery or for position determination. In other words, there are two specific aspects to the Integrity Monitor (IM). For DGPS users, it predicts the reliability or quality of the DGPS corrections. For all users, it isolates the mobile position calculation from the effects of GPS satellite failures. The UDRE parameter, nominally output by a reference DGPS receiver, is used to communicate the DGPS quality information, and DGPS corrections are simply excluded for failed satellites.
    Type: Application
    Filed: June 3, 2002
    Publication date: January 16, 2003
    Inventors: Thomas M. King, George J. Geier, Yilin Zhao
  • Publication number: 20030011513
    Abstract: An assisted global positioning satellite (Assisted GPS) system has a GPS reference network node (260) that collects GPS satellite broadcast messages and prepares separate GPS assistance messages to be modulated by a base transceiver station (BTS) (202) on a cellular carrier signal (201) and sent to single or multiple handset (204). In a first preferred embodiment, instead of the handset (204) receiving standard ephemeris and clock correction data elements in a GPS assistance message, a compressed GPS assistance message containing XYZ information contains a GPS satellite's coordinate position modified according to the satellite clock correction. In a second preferred embodiment, there is a first type of compressed GPS assistance message containing subframe 1, 2, 3 data of a GPS satellite broadcast message and a second type of compressed GPS assistance message containing subframe 4, 5 data of a GPS satellite broadcast message.
    Type: Application
    Filed: August 5, 2002
    Publication date: January 16, 2003
    Inventors: Yilin Zhao, Thomas M. King, George J. Geier
  • Publication number: 20020168985
    Abstract: GPS assistance message and data issue identifiers for transmission to GPS enabled mobile stations in cellular communications networks and methods therefor. The GPS data issue identifiers indicate whether GPS data, for example corresponding ephemeris and almanac data, stored at the mobile station requires updating. In the exemplary 3rd generation (W-CDMA/UMTS) architecture, the GPS assistance message is a System Information Block (SIB), and the GPS ephemeris data identifier and corresponding satellite identifier is encoded in a value tag included in a Master Information Block (MIB).
    Type: Application
    Filed: February 16, 2001
    Publication date: November 14, 2002
    Inventors: Yilin Zhao, Thomas M. King, George J. Geier
  • Publication number: 20020135511
    Abstract: Satellite positioning system enabled mobile receivers (310) and cellular communication network base stations (330) synchronized with satellite positioning system clocks and method therefore. In a network-assisted embodiment, a variable propagation delay for transmission of an assistance message (232) from the base station to the mobile receiver is determined for correcting the handset clock (318). In others embodiments, local clock drift of mobile receivers (310) and/or base stations (330) are determined by a ratio of local and satellite time differences, based on sequential time snapshots, for use in correcting the local clocks.
    Type: Application
    Filed: February 20, 2001
    Publication date: September 26, 2002
    Inventors: Yilin Zhao, Hugh Wang
  • Patent number: 6452541
    Abstract: Satellite positioning system enabled mobile receivers (310) and cellular communication network base stations (330) synchronized with satellite positioning system clocks and method therefore. In a network-assisted embodiment, a variable propagation delay for transmission of an assistance message (232) from the base station to the mobile receiver is determined for correcting the handset clock (318). In others embodiments, local clock drift of mobile receivers (310) and/or base stations (330) are determined by a ratio of local and satellite time differences, based on sequential time snapshots, for use in correcting the local clocks.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: September 17, 2002
    Assignee: Motorola, Inc.
    Inventors: Yilin Zhao, Hugh Wang