Patents by Inventor Xianxi Li
Xianxi Li 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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Patent number: 10381857Abstract: One embodiment provides an electronic device including: a processor; a power supply module coupled to the processor; a receiving antenna coupled to the power supply module, wherein receiving antenna cooperates with a transmitting antenna of a wireless charger to charge the power supply module wirelessly; an inductor arranged with respect to the receiving antenna, wherein the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively; a comparator for comparing the first and second induced voltages; and wherein the processor determines if the receiving antenna is aligned with respect to the transmitting antenna of the wireless charger based upon the comparison of the first and second induced voltages. Other aspects are described and claimed.Type: GrantFiled: March 29, 2016Date of Patent: August 13, 2019Assignee: Lenovo (Beijing) LimitedInventor: Xianxi Li
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Patent number: 10033205Abstract: For preventing overcurrent discharge, a protection method, a power supply apparatus, and an electronic device are disclosed. The power supply apparatus may include a power supply module and a protection circuit coupled to the power supply module and an electrical terminal. The protection circuit may include a controller that directs power from the power supply module to the electrical terminal, wherein the controller stops a current flow from the power supply module to the electrical terminal in response to a voltage detected by the controller being higher than a threshold voltage based on a temperature of the protection circuit.Type: GrantFiled: March 30, 2016Date of Patent: July 24, 2018Assignee: Lenovo (Beijing) LimitedInventor: Xianxi Li
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Publication number: 20170179740Abstract: For preventing overcurrent discharge, a protection method, a power supply apparatus, and an electronic device are disclosed. The power supply apparatus may include a power supply module and a protection circuit coupled to the power supply module and an electrical terminal. The protection circuit may include a controller that directs power from the power supply module to the electrical terminal, wherein the controller stops a current flow from the power supply module to the electrical terminal in response to a voltage detected by the controller being higher than a threshold voltage based on a temperature of the protection circuit.Type: ApplicationFiled: March 30, 2016Publication date: June 22, 2017Inventor: Xianxi Li
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Publication number: 20170163071Abstract: One embodiment provides an electronic device including: a processor; a power supply module coupled to the processor; a receiving antenna coupled to the power supply module, wherein receiving antenna cooperates with a transmitting antenna of a wireless charger to charge the power supply module wirelessly; an inductor arranged with respect to the receiving antenna, wherein the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively; a comparator for comparing the first and second induced voltages; and wherein the processor determines if the receiving antenna is aligned with respect to the transmitting antenna of the wireless charger based upon the comparison of the first and second induced voltages. Other aspects are described and claimed.Type: ApplicationFiled: March 29, 2016Publication date: June 8, 2017Inventor: Xianxi Li
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Patent number: 9660469Abstract: A multi-battery charging circuit is described and it includes an electric power detecting unit for detecting remaining amount of electric power of each battery; a charging deciding unit provided with a first amount of electric power threshold and for comparing the remaining amount detected with the first threshold; and a charging unit for charging a plurality of batteries with a first strategy in a first time period, and with a second strategy in a second time period when the remaining amount of electric power of one or more of the batteries is equal to a second amount of electric power threshold, and with a third strategy in a third time period when the remaining amount is equal to a third amount of electric power threshold.Type: GrantFiled: March 3, 2015Date of Patent: May 23, 2017Assignee: LENOVO (BEIJING) CO., LTD.Inventor: Xianxi Li
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Patent number: 9634506Abstract: A multi-battery charging circuit is described and it includes an electric power detecting unit for detecting remaining amount of electric power of each battery; a charging deciding unit provided with a first amount of electric power threshold and for comparing the remaining amount detected with the first threshold; and a charging unit for charging a plurality of batteries with a first strategy in a first time period, and with a second strategy in a second time period when the remaining amount of electric power of one or more of the batteries is equal to a second amount of electric power threshold, and with a third strategy in a third time period when the remaining amount is equal to a third amount of electric power threshold.Type: GrantFiled: March 3, 2015Date of Patent: April 25, 2017Assignee: LENOVO (BEIJING) CO., LTD.Inventor: Xianxi Li
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Publication number: 20160094067Abstract: A multi-battery charging circuit is described and it includes an electric power detecting unit for detecting remaining amount of electric power of each battery; a charging deciding unit provided with a first amount of electric power threshold and for comparing the remaining amount detected with the first threshold; and a charging unit for charging a plurality of batteries with a first strategy in a first time period, and with a second strategy in a second time period when the remaining amount of electric power of one or more of the batteries is equal to a second amount of electric power threshold, and with a third strategy in a third time period when the remaining amount is equal to a third amount of electric power threshold.Type: ApplicationFiled: March 3, 2015Publication date: March 31, 2016Applicant: LENOVO (BEIJING) CO., LTD.Inventor: Xianxi Li
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Patent number: 8755810Abstract: The present invention discloses a method and apparatus for rank self-adaptation. The method comprises: a base station receiving ranks reported by a user equipment via a rank receiving window, determining a rank at the current moment based on a distribution state of each rank in the rank receiving window at the current moment, and determining the number of independent channels used for sending downstream data to the user equipment based on the rank at the current moment. The present invention can reasonably forecast change of ranks of MIMO channels so as to better use MIMO channel resources to perform data transmission and improve the throughput rate of the MIMO channels.Type: GrantFiled: March 5, 2010Date of Patent: June 17, 2014Assignee: ZTE CorporationInventors: Yuanchun Tan, Focai Peng, Liping Liu, Xianxi Li, Juanjuan Liu, Liang Li
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Patent number: 8737512Abstract: The present invention provides a method and an apparatus for processing a precoder. The method comprises: step A: a base station determining whether the number of received effective precoders reported by a certain UE is greater than or equal to a threshold a, if so, executing step B, otherwise, executing step D; step B: the base station determining whether each received effective precoder is according to the same number of layers, if so, executing step C, otherwise, executing step D; step C: the base station determining whether a variation speed of each effective precoder is fast, if so, applying a transmit diversity transmission mode to the UE, otherwise, applying a MIMO transmission mode to the UE; and step D: applying the MIMO transmission mode to the UE. Therefore, the present invention can reasonably predict the transmission mode and the precoder that should be employed in the transmission mode at current time for a certain UE.Type: GrantFiled: May 12, 2010Date of Patent: May 27, 2014Assignee: ZTE CorporationInventors: Yuanchun Tan, Liping Liu, Xianxi Li
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Patent number: 8559328Abstract: The disclosure discloses a method and device for reporting channel state information aperiodically. Wherein the method comprises: collecting the channel state information reported by the UE through the configured receiving window; determining the change speed degree of the channel state of the UE according to the criterion for determining a change speed of the channel state information; deciding whether the UE needs to perform aperiodic reporting according to the mapping relationship between the change speed degree of the channel state information and a reporting period adjusting value, and determining timing for the aperiodic reporting if needed. By the method of the disclosure, on one hand, the base station sufficiently obtains the channel state information reported by the UE, which benefits for more suitable scheduling and resource allocating for the UE; on the other hand, PUSCH resources can be used more rationally.Type: GrantFiled: November 30, 2009Date of Patent: October 15, 2013Assignee: ZTE CorporationInventors: Yuanchun Tan, Focai Peng, Liping Liu, Xianxi Li, Wei Lei, Hua Sun
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Publication number: 20120207238Abstract: The present invention provides a method and an apparatus for processing a precoder. The method comprises: step A: a base station determining whether the number of received effective precoders reported by a certain UE is greater than or equal to a threshold a, if so, executing step B, otherwise, executing step D; step B: the base station determining whether each received effective precoder is according to the same number of layers, if so, executing step C, otherwise, executing step D; step C: the base station determining whether a variation speed of each effective precoder is fast, if so, applying a transmit diversity transmission mode to the UE, otherwise, applying a MIMO transmission mode to the UE; and step D: applying the MIMO transmission mode to the UE. Therefore, the present invention can reasonably predict the transmission mode and the precoder that should be employed in the transmission mode at current time for a certain UE.Type: ApplicationFiled: May 12, 2010Publication date: August 16, 2012Applicant: ZTE CORPORATIONInventors: Yuanchun Tan, Liping Liu, Xianxi Li
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Publication number: 20120196612Abstract: The present invention discloses a method and apparatus for rank self-adaptation. The method comprises: a base station receiving ranks reported by a user equipment via a rank receiving window, determining a rank at the current moment based on a distribution state of each rank in the rank receiving window at the current moment, and determining the number of independent channels used for sending downstream data to the user equipment based on the rank at the current moment. The present invention can reasonably forecast change of ranks of MIMO channels so as to better use MIMO channel resources to perform data transmission and improve the throughput rate of the MIMO channels.Type: ApplicationFiled: March 5, 2010Publication date: August 2, 2012Applicant: ZTE CorporationInventors: Yuanchun Tan, Focai Peng, Liping Liu, Xianxi Li, Juanjuan Liu, Liang Li
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Publication number: 20120195213Abstract: The disclosure discloses a method and device for reporting channel state information aperiodically. Wherein the method comprises: collecting the channel state information reported by the UE through the configured receiving window; determining the change speed degree of the channel state of the UE according to the criterion for determining a change speed of the channel state information; deciding whether the UE needs to perform aperiodic reporting according to the mapping relationship between the change speed degree of the channel state information and a reporting period adjusting value, and determining timing for the aperiodic reporting if needed. By the method of the disclosure, on one hand, the base station sufficiently obtains the channel state information reported by the UE, which benefits for more suitable scheduling and resource allocating for the UE; on the other hand, PUSCH resources can be used more rationally.Type: ApplicationFiled: November 30, 2009Publication date: August 2, 2012Applicant: ZTE CORPORATIONInventors: Yuanchun Tan, Focai Peng, Liping Liu, Xianxi Li, Wei Lei, Hua Sun