Patents by Inventor Camille Chen

Camille Chen 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: 8467735
    Abstract: Methods and apparatus for analysis of electronic components such as radio transceivers (for example, WLAN, Bluetooth, cellular, GPS). In one embodiment, a “black box” is diagnosed in its final device application and layout, using a series of software test routines or suites. The test suites provide simultaneous monitoring of multiple non-overlapping status indicators. Each test suite can be selectively enabled or disabled, and may also provide runtime modification of one or more parameters, and or intelligent testing of system operation. In another embodiment, multiple black box modules within a single form factor device are simultaneously run; the interference levels between the black box modules (as well as other parameters) are independently measured, displayed and logged to the user. Exemplary embodiments are described in reference to a Bluetooth module and WLAN module operating within a spatially restricted device (such as a desktop/laptop computer, “smartphone”, Bluetooth mouse and keyboard).
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: June 18, 2013
    Assignee: Apple Inc.
    Inventors: Michael Jason Giles, Camille Chen, Lei Li, Michael A. Robinson
  • Publication number: 20130143494
    Abstract: Methods and apparatus for optimizing wireless network performance by incorporating platform configuration and use case information. In one exemplary scheme, a client device provides the wireless network with an indications of impacted operations based on the client device's platform configuration. The wireless network can adjust the radio link to the client device so as to best accommodate the impacted operation. In one embodiment, a client device that includes a 3×3 Wireless Local Area Network (WLAN) (or 4×4, 2×2, etc.) and Bluetooth (BT) module identifies a subset of modulation and coding schemes (MCS) that are preferred for operation. The client device provides the identified subset to the WLAN access point (AP). Responsively, the WLAN AP selects a MCS, such that the client device's overall performance remains at an acceptable level. In another embodiment, the server/client can adjust MCS and/or active antenna chains based on the noise floor (NF) level.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 6, 2013
    Inventors: Camille Chen, Christopher B. Zimmermann, Hsin-Yao Chen, Lei Li, Michael Giles
  • Patent number: 8417187
    Abstract: Methods and apparatus for compensating for the effects of interference between multiple wireless communication apparatus. In one embodiment, the method comprises providing a first wireless communication apparatus operating in a first band and a second wireless communication apparatus operating at least partly in the first band, where the second wireless communication apparatus operates according to a different communication protocol than the first wireless communication apparatus. Interference is compensated for between the first wireless communication apparatus and the second wireless communication apparatus by selecting and operating according to one of a plurality of operational protocols. In another embodiment, the first wireless communication apparatus and the second wireless communication apparatus operate in a closed-loop relationship to cooperatively compensate for communication interference.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: April 9, 2013
    Assignee: Apple Inc.
    Inventors: Camille Chen, Michael A. Robinson, Marco Pontil, Michael J. Giles
  • Publication number: 20130064118
    Abstract: Methods and apparatus for enhancing network capacity in a network comprising multiple wireless communication that overlap at least partly in frequency spectrum. In one embodiment, the apparatus comprises a portable device such as a laptop or smartphone having both a WLAN (e.g., Wi-Fi) interface and a PAN (e.g., Bluetooth) interface which each operate with approximately the same frequency range. One variant places the WLAN interface into a power-saving mode as a default, thereby mitigating interference with the PAN interface in cases where the WLAN interface is not in active use. In another variant, an aggressive PAN management algorithm is used to enforce network policy on the PAN interface, thereby mitigating interference between the PAN interface and the WLAN interfaces of other devices in the network (as well as the parent device). AP-based variants are also described. Methods of operation and doing business utilizing the aforementioned apparatus are also disclosed.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 14, 2013
    Inventors: Michael A. Robinson, Camille Chen, Jaime Tolentino
  • Patent number: 8340578
    Abstract: Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: December 25, 2012
    Assignee: Apple Inc.
    Inventors: Jaime Tolentino, Camille Chen, Michael Jason Giles, Huy Le, Gary Thomason, David A. Hardell
  • Patent number: 8284721
    Abstract: Methods and apparatus for selectively switching one or more antennas in a multiple-input, multiple-output (MIMO) antenna array so as to mitigate interference with another RF interface within the same space-constrained device, based on radio frequency isolation. In one embodiment, the MIMO interface comprises a WLAN interface having a 2×2 or 3×3 array of antennae which are placed in a wireless device in an asymmetric fashion with respect to the antenna of the second interface, and the other interface comprises a PAN (e.g., Bluetooth) interface operating in an overlapping frequency band (e.g., ISM band). When both interfaces are operating, interference is mitigated through selectively switching off one or more of the MIMO antennae, and using the remaining antenna(e) having the best isolation from the Bluetooth antennae.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: October 9, 2012
    Assignee: Apple Inc.
    Inventors: Camille Chen, Michael A. Robinson, Michael J. Giles
  • Patent number: 8265017
    Abstract: Methods and apparatus for enhancing network capacity in a network comprising multiple wireless communication that overlap at least partly in frequency spectrum. In one embodiment, the apparatus comprises a portable device such as a laptop or smartphone having both a WLAN (e.g., Wi-Fi) interface and a PAN (e.g., Bluetooth) interface which each operate with approximately the same frequency range. One variant places the WLAN interface into a power-saving mode as a default, thereby mitigating interference with the PAN interface in cases where the WLAN interface is not in active use. In another variant, an aggressive PAN management algorithm is used to enforce network policy on the PAN interface, thereby mitigating interference between the PAN interface and the WLAN interfaces of other devices in the network (as well as the parent device). AP-based variants are also described. Methods of operation and doing business utilizing the aforementioned apparatus are also disclosed.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: September 11, 2012
    Assignee: Apple Inc.
    Inventors: Michael A. Robinson, Camille Chen, Jaime Tolentino
  • Publication number: 20120207032
    Abstract: Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 16, 2012
    Inventors: Camille Chen, Lei Li, Chris Zimmermann, Michael J. Giles, Jaime Tolentino, Chris Hartman, Arthur Lin
  • Publication number: 20110090982
    Abstract: Methods and apparatus for dynamically compensating for the effects of interference between multiple wireless communications apparatus. In one embodiment, the method comprises providing a first wireless communication apparatus operating in a first band and a second wireless communication apparatus operating in the same first band (or proximate to the first band and with a comparatively high transmitter power), where the second wireless communication apparatus operates according to a different communication protocol than the first wireless communication apparatus and further change in physical configuration with respect to one another. Based on the physical configuration, interference is compensated for between the first wireless communication apparatus and the second wireless communication apparatus “on the fly” by selecting and operating according to one of a plurality of operational protocols.
    Type: Application
    Filed: June 23, 2010
    Publication date: April 21, 2011
    Inventors: Camille Chen, Hassan Lashkari, Sonal Tambe, Frederick Berkowitz
  • Publication number: 20110081858
    Abstract: Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 7, 2011
    Inventors: Jaime Tolentino, Camille Chen, Michael Jason Giles, Huy Le, Gary Thomason, David A. Hardell
  • Publication number: 20100240317
    Abstract: Methods and apparatus for analysis of electronic components such as radio transceivers (for example, WLAN, Bluetooth, cellular, GPS). In one embodiment, a “black box” is diagnosed in its final device application and layout, using a series of software test routines or suites. The test suites provide simultaneous monitoring of multiple non-overlapping status indicators. Each test suite can be selectively enabled or disabled, and may also provide runtime modification of one or more parameters, and or intelligent testing of system operation. In another embodiment, multiple black box modules within a single form factor device are simultaneously run; the interference levels between the black box modules (as well as other parameters) are independently measured, displayed and logged to the user. Exemplary embodiments are described in reference to a Bluetooth module and WLAN module operating within a spatially restricted device (such as a desktop/laptop computer, “smartphone”, Bluetooth mouse and keyboard).
    Type: Application
    Filed: March 23, 2009
    Publication date: September 23, 2010
    Inventors: Michael Jason Giles, Camille Chen, Lei Li, Michael A. Robinson
  • Patent number: 7701913
    Abstract: Embodiments of methods and apparatus for providing a platform coexistence system of multiple wireless communication devices are generally described herein. Other embodiments may be described and claimed.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: April 20, 2010
    Assignee: Intel Corporation
    Inventors: Camille Chen, Gedon Rosner, Boris Ginzburg
  • Publication number: 20090323652
    Abstract: Methods and apparatus for selectively switching one or more antennas in a multiple-input, multiple-output (MIMO) antenna array so as to mitigate interference with another RF interface within the same space-constrained device, based on radio frequency isolation. In one embodiment, the MIMO interface comprises a WLAN interface having a 2×2 or 3×3 array of antennae which are placed in a wireless device in an asymmetric fashion with respect to the antenna of the second interface, and the other interface comprises a PAN (e.g., Bluetooth) interface operating in an overlapping frequency band (e.g., ISM band). When both interfaces are operating, interference is mitigated through selectively switching off one or more of the MIMO antennae, and using the remaining antenna(e) having the best isolation from the Bluetooth antennae.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventors: Camille Chen, Michael A. Robinson, Michael J. Giles
  • Publication number: 20090257379
    Abstract: Methods and apparatus for enhancing network capacity in a network comprising multiple wireless communication that overlap at least partly in frequency spectrum. In one embodiment, the apparatus comprises a portable device such as a laptop or smartphone having both a WLAN (e.g., Wi-Fi) interface and a PAN (e.g., Bluetooth) interface which each operate with approximately the same frequency range. One variant places the WLAN interface into a power-saving mode as a default, thereby mitigating interference with the PAN interface in cases where the WLAN interface is not in active use. In another variant, an aggressive PAN management algorithm is used to enforce network policy on the PAN interface, thereby mitigating interference between the PAN interface and the WLAN interfaces of other devices in the network (as well as the parent device). AP-based variants are also described. Methods of operation and doing business utilizing the aforementioned apparatus are also disclosed.
    Type: Application
    Filed: April 11, 2008
    Publication date: October 15, 2009
    Inventors: Michael A. Robinson, Camille Chen, Jaime Tolentino
  • Publication number: 20090176454
    Abstract: Methods and apparatus for compensating for the effects of interference between multiple wireless communication apparatus. In one embodiment, the method comprises providing a first wireless communication apparatus operating in a first band and a second wireless communication apparatus operating at least partly in the first band, where the second wireless communication apparatus operates according to a different communication protocol than the first wireless communication apparatus. Interference is compensated for between the first wireless communication apparatus and the second wireless communication apparatus by selecting and operating according to one of a plurality of operational protocols. In another embodiment, the first wireless communication apparatus and the second wireless communication apparatus operate in a closed-loop relationship to cooperatively compensate for communication interference.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 9, 2009
    Inventors: Camille Chen, Michael A. Robinson, Marco Pontil, Michael J. Giles
  • Publication number: 20070099567
    Abstract: Embodiments of methods and apparatus for providing a platform coexistence system of multiple wireless communication devices are generally described herein. Other embodiments may be described and claimed.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Inventors: Camille Chen, Gedon Rosner, Boris Ginzburg
  • Publication number: 20070080781
    Abstract: Some embodiments of the invention provide devices, systems and methods of coordination among wireless transceivers. For example, an apparatus in accordance with an embodiment of the invention includes first and second wireless transceivers, wherein the first wireless transceiver is to enter a non-transmission mode for a pre-defined time period in response to an indication from the second wireless transceiver, and wherein one of the first and second wireless transceivers is to operate in a synchronous network and the other of the first and second wireless transceivers is to operate in a non-synchronous network.
    Type: Application
    Filed: September 29, 2005
    Publication date: April 12, 2007
    Inventors: Boris Ginzburg, Camille Chen, Gedon Rosner
  • Publication number: 20060133259
    Abstract: The effects of interference are mitigated in a wireless system through updating noise variance estimates. Noise variance estimates may be updated after the reception of a preamble in an OFDM receiver.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 22, 2006
    Inventors: Xintian Lin, Qinghua Li, Camille Chen
  • Publication number: 20050215197
    Abstract: In some embodiments of the invention, an 802.11-enabled device may fragment an 802.11 packet into smaller packets and transmit the smaller packets instead of the 802.11 to lessen interference with Bluetooth synchronized connection-oriented communication of a collocated or nearby Bluetooth-enabled device.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 29, 2005
    Inventors: Camille Chen, Kristoffer Fleming, Boris Ginzburg, Gordon Chinn