Patents by Inventor Weiping Dou
Weiping Dou 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).
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Publication number: 20130303089Abstract: A system and method for wireless device testing. The system includes a reverberation chamber (RC) and a downlink channel emulator. A wireless device is placed within the RC. Probe antennas are positioned within the RC. The downlink (DL) channel emulator couples to the probe antennas. The DL channel emulator is configured to: (a) receive downlink stimulus signals; and (b) generate downlink intermediate signals based on the downlink stimulus signals in order to emulate desired downlink channel characteristics. The probe antennas are configured to respectively transmit the downlink intermediate signals into the RC for reception by the wireless device. The system may also include an uplink channel emulator, which receives uplink transmit signals from the RC, and generates uplink terminal signals based on the uplink transmit signals in order to emulate desired uplink channel characteristics. The uplink transmit signals may be used to evaluated the performance of the wireless device.Type: ApplicationFiled: October 15, 2012Publication date: November 14, 2013Applicant: APPLE INC.Inventors: Xiaowen Wang, Weiping Dou, Warren Lee, Zhaojun Cheng, Syed Aon Mujtaba
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Patent number: 8577426Abstract: Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power.Type: GrantFiled: May 18, 2012Date of Patent: November 5, 2013Assignee: Palm, Inc.Inventors: Weiping Dou, James Samuel Bowen, Olivier Boireau, Avi Kopelman
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Patent number: 8489162Abstract: A user device having a slot antenna formed in metallic material of a structural member is described.Type: GrantFiled: August 17, 2010Date of Patent: July 16, 2013Assignee: Amazon Technologies, Inc.Inventors: Weiping Dou, James Samuel Bowen
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Publication number: 20130016632Abstract: A wireless electronic device having first and second baseband processors is provided. In one suitable arrangement, radio-frequency power splitters and adjustable low noise amplifiers may be form in the receive paths. The use of power splitters allow signals associated with the first and second baseband processors to be received in parallel. In another suitable arrangement, radio-frequency switches are used in place of the power splitters. The states of the switches may be controlled using at least one of the first and second baseband processors. The use of switches instead of power splitters requires that wake periods associated with the first baseband processor and wake periods associated with the second baseband processor are non-overlapping. To ensure minimal wake period collision, a wake period associated with the second baseband processor may be positioned at a midpoint between two successive wake periods associated with the first baseband processor.Type: ApplicationFiled: January 11, 2012Publication date: January 17, 2013Inventors: Syed A. Mujtaba, Madhusudan Chaudhary, Thanigaivelu Elangovan, Karthik Anantharaman, Weiping Dou, Isabel G. Mahe
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Publication number: 20120238331Abstract: Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power.Type: ApplicationFiled: May 18, 2012Publication date: September 20, 2012Inventors: Weiping Dou, James Samuel Bowen, Olivier Boireau, Avi Kopelman
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Patent number: 8255013Abstract: Various embodiments of an audio receiver design for a mobile computing device are described. The mobile computing device may comprise an audio receiver structured and arranged to port to the rear of the mobile computing device. In some embodiments, the mobile computing device may be implemented as a dual-mode Global System for Mobile Communications/Universal Mobile Telephone System (GSM/UMTS) quad-band device. The mobile computing device also may comprise a Global Positioning System (GPS) antenna for providing positioning determination capabilities and location-based services. In various implementations, the audio receiver may be ported to an in-vehicle system, such as an onboard entertainment system, navigation system, and/or communications system. Other embodiments are described and claimed.Type: GrantFiled: December 18, 2006Date of Patent: August 28, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Mark Babella, Stephen Senatore, Weiping Dou, Avi Kopelman, William Noellert
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Publication number: 20120184228Abstract: Electronic devices may have multiple wireless integrated circuits such as a pair of baseband processor integrated circuits and may have multiple antennas such as a pair of antennas. An electronic device may be operated in different modes depending on the operating environment of the electronic device. When both antennas are unblocked, both baseband processors and both antennas may be used in transmitting signals. When one antenna is not available, the device may be operated in a mode in which the available antenna is used and both baseband processors are used or in a mode in which the available antenna is used and only one of the baseband processors is used. Operating mode decisions may be made so as to minimize the potential for intermodulation distortion and absorbed radiation.Type: ApplicationFiled: January 9, 2012Publication date: July 19, 2012Inventors: Syed A. MUJTABA, Weiping DOU
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Patent number: 8224400Abstract: Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power.Type: GrantFiled: May 31, 2007Date of Patent: July 17, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Weiping Dou, James Samuel Bowen, Olivier Boireau, Avi Kopelman
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Patent number: 7940223Abstract: Various embodiments of an internal diversity antenna architecture are described. In one embodiment, a wireless device may include a housing enclosing a printed circuit board, a first diversity antenna, and a second diversity antenna internal to the housing. The second diversity antenna may be positioned substantially near the bottom of the housing or the bottom the printed circuit board. Other embodiments are described and claimed.Type: GrantFiled: May 1, 2009Date of Patent: May 10, 2011Assignee: Hewlett-Packard Development Company L.P.Inventors: Weiping Dou, Stephen Senatore, Arthur Zarnowitz
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Patent number: 7876272Abstract: Various embodiments are directed to antenna designs that may improve the performance of a mobile computing device. Some embodiments are directed to a mobile computing device assembly comprising accessory incorporating a supplemental antenna designed to be adjacent to at least one internal antenna of a mobile computing device when the accessory is attached to the mobile computing device. The supplemental antenna and the internal antenna may cooperatively form an antenna system for the mobile computing device resulting in improved performance. In various implementations, the use of the supplemental antenna in conjunction with the internal antenna may enhance antenna performance and/or increase antenna efficiency. Other embodiments are described and claimed.Type: GrantFiled: July 31, 2007Date of Patent: January 25, 2011Assignee: Palm, Inc.Inventors: Weiping Dou, Avi Kopelman, Yomi Matsuoka, Mark Babella
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Patent number: 7864120Abstract: Various embodiments are directed to high isolation antenna design for reducing frequency coexistence interference. In one embodiment, a computing device may comprise a printed circuit board including a first internal antenna and a second internal antenna operating in a common frequency band. At least one of the first internal antenna and the second internal antenna may comprise a balanced antenna coupled to an unbalancing element to suppress surface current on the printed circuit board and reduce frequency coexistence interference between the first internal antenna and the second internal antenna. Other embodiments are described and claimed.Type: GrantFiled: May 31, 2007Date of Patent: January 4, 2011Assignee: Palm, Inc.Inventors: Weiping Dou, Avi Kopelman
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Publication number: 20100026589Abstract: Various embodiments are directed to antenna designs that may improve the performance of a mobile computing device. Some embodiments are directed to a mobile computing device assembly comprising accessory incorporating a supplemental antenna designed to be adjacent to at least one internal antenna of a mobile computing device when the accessory is attached to the mobile computing device. The supplemental antenna and the internal antenna may cooperatively form an antenna system for the mobile computing device resulting in improved performance. In various implementations, the use of the supplemental antenna in conjunction with the internal antenna may enhance antenna performance and/or increase antenna efficiency. Other embodiments are described and claimed.Type: ApplicationFiled: July 31, 2007Publication date: February 4, 2010Inventors: Weiping Dou, Avi Kopelman, Yomi Matsuoka, Mark Babella
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Publication number: 20090295651Abstract: Various embodiments of an internal diversity antenna architecture are described. In one embodiment, a wireless device may include a housing enclosing a printed circuit board, a first diversity antenna, and a second diversity antenna internal to the housing. The second diversity antenna may be positioned substantially near the bottom of the housing or the bottom the printed circuit board. Other embodiments are described and claimed.Type: ApplicationFiled: May 1, 2009Publication date: December 3, 2009Applicant: PALM, INC.Inventors: Weiping Dou, Stephen Senatore, Arthur Zarnowitz
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Patent number: 7548208Abstract: Various embodiments of an internal diversity antenna architecture are described. In one embodiment, a wireless device may include a housing enclosing a printed circuit board, a first diversity antenna, and a second diversity antenna internal to the housing. The second diversity antenna may be positioned substantially near the bottom of the housing or the bottom the printed circuit board. Other embodiments are described and claimed.Type: GrantFiled: February 24, 2006Date of Patent: June 16, 2009Assignee: Palm, Inc.Inventors: Weiping Dou, Stephen Senatore, Arthur Zarnowitz
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Patent number: 7525494Abstract: Various embodiments of an internal antenna and motherboard architecture are described. In one embodiment, a wireless device may include a housing enclosing a first motherboard and a second motherboard. The ground plane of the first motherboard may be coupled to the ground plane of the second motherboard within the housing. The first motherboard and the second motherboard may act as an internal antenna system for the wireless device. Other embodiments are described and claimed.Type: GrantFiled: February 28, 2008Date of Patent: April 28, 2009Assignee: Palm, Inc.Inventors: Jerome C Tu, Weiping Dou
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Patent number: 7463202Abstract: A system and apparatus for an extendable antenna architecture are described. The apparatus may include an antenna body having one or more antenna traces, and an antenna housing to couple to the antenna body. The antenna housing may have an extended position and a retracted position. The antenna housing may have a first external surface forming a substantially continuous plane with a second external surface for a device housing when in the retracted position. Other embodiments are described and claimed.Type: GrantFiled: July 19, 2007Date of Patent: December 9, 2008Assignee: Palm, Inc.Inventors: Arthur Zarnowitz, Weiping Dou, Chrome Cebe
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Publication number: 20080300027Abstract: Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Inventors: Weiping Dou, James Samuel Bowen, Olivier Boireau, Avi Kopelman
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Publication number: 20080297419Abstract: Various embodiments are directed to high isolation antenna design for reducing frequency coexistence interference. In one embodiment, a computing device may comprise a printed circuit board including a first internal antenna and a second internal antenna operating in a common frequency band. At least one of the first internal antenna and the second internal antenna may comprise a balanced antenna coupled to an unbalancing element to suppress surface current on the printed circuit board and reduce frequency coexistence interference between the first internal antenna and the second internal antenna. Other embodiments are described and claimed.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Inventors: Weiping Dou, Avi Kopelman
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Publication number: 20080143616Abstract: Various embodiments of an internal antenna and motherboard architecture are described. In one embodiment, a wireless device may include a housing enclosing a first motherboard and a second motherboard. The ground plane of the first motherboard may be coupled to the ground plane of the second motherboard within the housing. The first motherboard and the second motherboard may act as an internal antenna system for the wireless device. Other embodiments are described and claimed.Type: ApplicationFiled: February 28, 2008Publication date: June 19, 2008Applicant: PALM, INC.Inventors: Jerome Tu, Weiping Dou
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Patent number: 7362275Abstract: Various embodiments of an internal antenna and motherboard architecture are described. In one embodiment, a wireless device may include a housing enclosing a first motherboard and a second motherboard. The ground plane of the first motherboard may be coupled to the ground plane of the second motherboard within the housing. The first motherboard and the second motherboard may act as an internal antenna system for the wireless device. Other embodiments are described and claimed.Type: GrantFiled: February 14, 2006Date of Patent: April 22, 2008Assignee: Palm, Inc.Inventors: Jerome Tu, Weiping Dou