Patents by Inventor Liang Gu
Liang Gu 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: 20180192530Abstract: The present disclosure provides a conductive cover, a housing assembly and a terminal. The conductive cover includes a first portion, a second portion, a conductive suspended strip and a conductive connecting member. A slot is defined between the second portion and the first portion. The conductive suspended strip is located in the slot and has a length equal to a length of the slot. An insulating layer is provided between the conductive suspended strip and the first portion, and another insulating layer is provided between the conductive suspended strip and the second portion. The conductive connecting member bridges over the slot, is electrically connected with the first portion and the second portion, and is insulated from the conductive suspended strip.Type: ApplicationFiled: August 28, 2017Publication date: July 5, 2018Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Xinbao WANG, Ning ZHAO, Liang GU
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Publication number: 20180191058Abstract: A terminal includes: a metal housing; a frame surrounds the metal housing; and a metal antenna radiator arranged between the metal housing and the frame, surrounding the metal housing, and having a first end coupled with a feed source through a matching circuit and a second end grounded.Type: ApplicationFiled: September 25, 2017Publication date: July 5, 2018Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Qing WU, Yizhou LUO, Liang GU
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Publication number: 20180183910Abstract: A housing assembly for a terminal and a terminal are provided. The housing assembly includes a housing, an antenna radiator and a ferrite. The antenna radiator is positioned at an outer face of the housing, and has a first orthographic projection region on the outer face. The ferrite is arranged on an inner face of the housing, and has a second orthographic projection region on the outer face. The first orthographic projection region is located in the second orthographic projection region.Type: ApplicationFiled: September 7, 2017Publication date: June 28, 2018Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Qing WU, Yizhou LUO, Liang GU
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Publication number: 20180175865Abstract: A reference-less frequency detector circuit includes a sampling circuit that is configured to generate a frequency control voltage and a switch circuit control signal based on a frequency difference between a clock signal frequency and an input data rate. The frequency control voltage has a frequency down indication and a frequency up indication. A voltage-to-current converter circuit is coupled to the sampling circuit and is configured to convert the frequency control voltage to a frequency control current based on the switch circuit control signal. The voltage-to-current converter circuit includes an output switch circuit controlled by the switch control signal and is configured to have substantially equal respective latencies for the frequency down indication and the frequency up indication.Type: ApplicationFiled: December 29, 2016Publication date: June 21, 2018Inventors: Liang Gu, Yuming Cao, Yen Dang, Gong Lei, Yifan Gu, Hung-Yi Lee, Mamatha Deshpande, Shou-Po Shih, Miao Liu
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Patent number: 9964832Abstract: An electronic driver circuit for use with a modulator such as a segmented Mach-Zehnder Modulator (MZM) is provided. The electronic driver circuit includes a first delay buffer implemented as a first complementary metal-oxide-semiconductor (CMOS) inverter and a second delay buffer implemented as a second CMOS inverter. The second CMOS inverter follows the first CMOS inverter and has a second gate width smaller than a first gate width of the first CMOS inverter. The first CMOS inverter is configured to produce a first delayed electrical signal from a received electrical signal and the second CMOS inverter is configured to produce a second delayed electrical signal from the first delayed electrical signal produced by the first CMOS inverter.Type: GrantFiled: May 28, 2015Date of Patent: May 8, 2018Assignee: Futurewei Technologies, Inc.Inventors: Morgan Chen, Yifan Gu, Hungyi Lee, Liang Gu, Yen Dang, Gong Lei, Yuming Cao, Xiao Shen, Yu Sheng Bai
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Patent number: 9941958Abstract: An apparatus comprising a semiconductor chip that comprises an optical modulator configured to modulate an optical signal based on a received driver signal, a voltage-mode (VM) driver coupled to the optical modulator and configured to produce a level-shifted driver signal to modulate the optical signal, and a two-stage test interface coupled to the optical modulator and configured to receive and test the level shifted driver signal. The two-stage test interface comprises a voltage equalization stage coupled to an output-terminated buffer stage, the VM driver comprises a two-stage VM Mach-Zehnder modulator (MZM) driver that comprises a pre-driver coupled to a VM level-shifter (VMLS). The apparatus further comprises a resistor coupled to an output of the buffer stage, wherein the resistor comprises an amount of resistance that matches a termination resistance of a test equipment. The termination resistance is about 50 ohm (?).Type: GrantFiled: December 15, 2015Date of Patent: April 10, 2018Assignee: Futurewei Technologies, Inc.Inventors: Liang Gu, Yuming Cao, Yifan Gu, Hungyi Lee, Gong Lei, Yen Dang, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Patent number: 9838239Abstract: An apparatus comprising a first electrical driver configured to generate a first binary voltage signal according to first data, a second electrical driver configured to generate a second binary voltage signal according to second data, wherein the first data and the second data are different, and a first optical waveguide arm coupled to the first electrical driver and the second electrical driver, wherein the first optical waveguide arm is configured to shift a first phase of a first optical signal propagating along the first optical waveguide arm according to a first voltage difference between the first binary voltage signal and the second binary voltage signal to produce a first multi-level phase-shifted optical signal.Type: GrantFiled: January 7, 2016Date of Patent: December 5, 2017Assignee: Futurewei Technologies, Inc.Inventors: Morgan Chen, Qianfan Xu, Hungyi Lee, Yifan Gu, Liang Gu, Yen Dang, Gong Lei, Yuming Cao, Xiao Shen, Yu Sheng Bai
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Publication number: 20170288652Abstract: A multiplexer comprises: an output circuit comprising a multiplexer output; and a first buffer coupled to the output circuit and comprising: a first selection input configured to receive a first selection signal; a first logical input configured to receive a first logical input signal; and a first ground; wherein the multiplexer is configured to: couple the first logical input to the multiplexer output when the first selection signal is a first value; and couple the first logical input to the first ground when the first selection signal is a second value. A method comprises: receiving a selection signal and a first logical input signal; coupling a first logical input to a multiplexer output when the selection signal is a first value; and coupling the first logical input to a ground when the selection signal is a second value.Type: ApplicationFiled: March 30, 2016Publication date: October 5, 2017Inventors: Liang Gu, Yuming Cao, Gong Lei, Yen Dang, Yifan Gu, Hungyi Lee, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Publication number: 20170170894Abstract: An apparatus comprising a semiconductor chip that comprises an optical modulator configured to modulate an optical signal based on a received driver signal, a voltage-mode (VM) driver coupled to the optical modulator and configured to produce a level-shifted driver signal to modulate the optical signal, and a two-stage test interface coupled to the optical modulator and configured to receive and test the level shifted driver signal. The two-stage test interface comprises a voltage equalization stage coupled to an output-terminated buffer stage, the VM driver comprises a two-stage VM Mach-Zehnder modulator (MZM) driver that comprises a pre-driver coupled to a VM level-shifter (VMLS). The apparatus further comprises a resistor coupled to an output of the buffer stage, wherein the resistor comprises an amount of resistance that matches a termination resistance of a test equipment. The termination resistance is about 50 ohm (?).Type: ApplicationFiled: December 15, 2015Publication date: June 15, 2017Inventors: Liang Gu, Yuming Cao, Yifan Gu, Hungyi Lee, Gong Lei, Yen Dang, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Publication number: 20170126443Abstract: An apparatus comprising an input port configured to receive an input signal propagated through a transmission link, wherein the transmission link comprises a low-frequency channel loss and a high-frequency channel loss, a continuous-time linear equalization (CTLE) circuit coupled to the input port and configured to produce an output signal according to the input signal by applying a first gain to the input signal at a first frequency to compensate the low-frequency loss, and applying a second gain to the input signal at a second frequency to compensate the high-frequency channel loss, and an output port coupled to the CTLE circuit and configured to output the output signal.Type: ApplicationFiled: October 28, 2015Publication date: May 4, 2017Inventors: Liang Gu, Yuming Cao, Yen Dang, Gong Lei, Hungyi Lee, Yifan Gu, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Publication number: 20170126236Abstract: An apparatus, comprising a first sampling circuit configured to sample a clock signal according to a data signal to produce a first sampled signal, a second sampling circuit configured to sample the clock signal according to a delay signal to produce a second sampled signal, and a control circuit coupled to the first sampling circuit and the second sampling circuit, wherein the control circuit is configured to perform a not-and (NAND) operation according to the first sampled signal and the second sampled signal to produce an activation signal for activating a frequency adjustment for the clock signal.Type: ApplicationFiled: December 29, 2016Publication date: May 4, 2017Inventors: Liang Gu, Yuming Cao, Gong Lei, Yen Dang, Yifan Gu, Hungyi Lee, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Patent number: 9584303Abstract: An apparatus, comprising a first sampling circuit configured to sample a clock signal according to a data signal to produce a first sampled signal, a second sampling circuit configured to sample the clock signal according to a delay signal to produce a second sampled signal, and a control circuit coupled to the first sampling circuit and the second sampling circuit, wherein the control circuit is configured to perform a not-and (NAND) operation according to the first sampled signal and the second sampled signal to produce an activation signal for activating a frequency adjustment for the clock signal.Type: GrantFiled: October 28, 2015Date of Patent: February 28, 2017Assignee: Futurewei Technologies, Inc.Inventors: Liang Gu, Yuming Cao, Gong Lei, Yen Dang, Yifan Gu, Hungyi Lee, Mamatha Deshpande, Shou-Po Shih, Yan Duan
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Publication number: 20160352325Abstract: An electronic driver circuit for use with a modulator such as a segmented Mach-Zehnder Modulator (MZM) is provided. The electronic driver circuit includes a first delay buffer implemented as a first complementary metal-oxide-semiconductor (CMOS) inverter and a second delay buffer implemented as a second CMOS inverter. The second CMOS inverter follows the first CMOS inverter and has a second gate width smaller than a first gate width of the first CMOS inverter. The first CMOS inverter is configured to produce a first delayed electrical signal from a received electrical signal and the second CMOS inverter is configured to produce a second delayed electrical signal from the first delayed electrical signal produced by the first CMOS inverter.Type: ApplicationFiled: May 28, 2015Publication date: December 1, 2016Inventors: Morgan Chen, Yifan Gu, Hungyi Lee, Liang Gu, Yen Dang, Gong Lei, Yuming Cao, Xiao Shen, Yu Sheng Bai
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Publication number: 20160218811Abstract: An apparatus comprising a first electrical driver configured to generate a first binary voltage signal according to first data, a second electrical driver configured to generate a second binary voltage signal according to second data, wherein the first data and the second data are different, and a first optical waveguide arm coupled to the first electrical driver and the second electrical driver, wherein the first optical waveguide arm is configured to shift a first phase of a first optical signal propagating along the first optical waveguide arm according to a first voltage difference between the first binary voltage signal and the second binary voltage signal to produce a first, multi-level phase-shifted optical signal.Type: ApplicationFiled: January 7, 2016Publication date: July 28, 2016Inventors: Morgan Chen, Qianfan Xu, Hungyi Lee, Yifan Gu, Liang Gu, Yen Dang, Gong Lei, Yuming Cao, Xiao Shen, Yu Sheng Bai
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Patent number: 8909750Abstract: A method for a multi-host system to exit from the network includes receiving a G-MS exit network instruction. The context information relating to the host connected to the G-MS is obtained. A host exit network instruction is sent to the host network management entity according to the ID of the host network management entity. The host is triggered to exit from the network. The obtained host context information includes the ID of the host connected to the G-MS and the ID of the host network management entity. The exit network instruction carries the host ID.Type: GrantFiled: October 22, 2010Date of Patent: December 9, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Lei Lu, Liang Gu
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Publication number: 20140234586Abstract: An apparatus for manufacturing a heat retaining multi-ply textile includes an adhesive tank; a lower drive roll partially submerged in the tank; an upper drive roll including spaced, longitudinal projections wherein the projections contact the lower drive roll to bring the adhesive onto the projections; two opposite driven rolls; a first supply spool for moving a continuous upper textile sheet wherein the continuous upper textile sheet moves to have its underside contacted the longitudinal projections when passing the upper drive roll before moves to a joining line of the driven rolls; a second supply spool for moving a continuous lower textile sheet to the joining line of the driven rolls wherein the continuous lower and upper textile sheets are pressed toward each other to form compartments; and an oven for heating in order to produce the production. Down migration can be avoided.Type: ApplicationFiled: June 17, 2013Publication date: August 21, 2014Inventors: CHIEN HUA CHEN, YU LIANG GU, CHAO KUEI LEE, JAI CHENG LIU, JUN DAI, BEN CHENG LU, WEI WEI WANG
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Patent number: 8717960Abstract: A method and system for multicast and broadcast system (MCBCS) mapping and delivery to support MCBCS services is provided. Media content flows are assigned a media content identifier grouped into one or more multicast and broadcast system (MBS) services, wherein each MBS service is assigned an MBS service ID. An MBS content ID (MCID) is assigned to each MBS service. Data packets are formed that include the MBS service information (e.g., the media content flows) and classification/synchronization rules. A data path ID (DPID) is assigned to one or more MBS services dependent upon the destination of the data packets. Frames for transmission are then created and transmitted via radio frequencies. Optionally, a logical channel ID (LCID) may be assigned to each media content flow, if more than one media content flow is included within an MBS service.Type: GrantFiled: October 17, 2008Date of Patent: May 6, 2014Assignee: FutureWei Technologies, Inc.Inventors: Liang Gu, Limei Wang
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Patent number: 8599714Abstract: A method and a system for implementing local switching are disclosed. The method includes: after receiving the uplink data sent by a sending MS, determining, according to information carried in the uplink data, information about location of a receiving Mobile Station (MS) that is to receive uplink data; and implementing, according to local switching rules that specify a local switching control mode, local switching for data transmitted between the sending MS and the receiving MS if determining, according to the information about location of the receiving MS and information about location of the sending MS, that the data transmitted between the sending MS and the receiving MS meets local switching conditions. In this way, network transmission resources are saved in the process of transmitting data, transmission delay is shortened, and data transmission efficiency is improved.Type: GrantFiled: August 5, 2011Date of Patent: December 3, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Lei Lu, Liang Gu, Wei Zhang
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Patent number: 8560326Abstract: Techniques for employing improved prompts in a speech-to-speech translation system are disclosed. By way of example, a technique for use in indicating a dialogue turn in an automated speech-to-speech translation system comprises the following steps/operations. One or more text-based scripts are obtained. The one or more text-based scripts are synthesizable into one or more voice prompts. At least one of the one or more voice prompts is synthesized for playback from at least one of the one or more text-based scripts, the at least one synthesized voice prompt comprising an audible message in a language understandable to a speaker interacting with the speech-to-speech translation system, the audible message indicating a dialogue turn in the automated speech-to-speech translation system.Type: GrantFiled: May 5, 2008Date of Patent: October 15, 2013Assignee: International Business Machines CorporationInventors: Yuqing Gao, Liang Gu, Fu-Hua Liu
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Patent number: 8463891Abstract: A multicast broadcast service (MBS) management method, device, and system are provided, so that a service/content provision server is enabled to manage an MBS operated by the service/content provision server itself. The method includes: a universal service interface (USI) receives a management operation request message from a service/content provision server; the management operation request message is sent to a multicast and broadcast service (MCBCS) server/controller to enable the MCBCS server/controller to perform corresponding operations according to the management operation request message. The device includes a first receiving module and a second receiving module. Another device includes a receiving module and a request processing module. The system includes an MCBCS server/controller and a USI connected to the MCBCS server/controller in a communication mode.Type: GrantFiled: February 23, 2011Date of Patent: June 11, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Chenghui Peng, Wei Zhang, Wenliang Liang, Yong Xie, Liang Gu