Patents by Inventor Jianjun Zhou
Jianjun Zhou 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: 9703363Abstract: The present disclosure provides a power supply module and a power supply system. The power supply module is used as a first power supply module in a computing system which further includes a second power supply module. The first power supply module and the second power supply module are cascaded in sequence. The first power supply module is in a power supplying state and the second power supply module is in an off state. The first power supply module itself is capable of automatically determining whether to turn on another power supply module or not, without any human intervention. In this way, the power distribution board can be simplified, or even eliminated, in which case the individual power supply modules can be connected by wire to reduce the cost.Type: GrantFiled: July 26, 2011Date of Patent: July 11, 2017Assignees: Lenovo (Beijing) Limited, Beijing Lenovo Software Ltd.Inventor: Jianjun Zhou
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Publication number: 20170131530Abstract: The present invention relates to an ultra-short distance projection lens with a refractive meridional image surface and a refractive sagittal image surface being isolated, including a display chip, a refractive lens group, and a rotationally symmetric reflector. The display chip undergoes imaging by the refractive lens group to form, between the refractive lens group and the rotationally symmetric reflector, a meridional intermediate image and a sagittal intermediate image that are isolated, wherein the two images undergo imaging by the rotationally symmetric reflector and astigmatism is eliminated on a screen, to form a clear picture. The present invention has a simple structure, a projection ratio 0.27 to 0.31, a magnification ratio 170 times to 220 times, and ultra-small distortion, has an optical structure that cancels out astigmatism, high resolution, very desirable tolerance, and relatively low mounting precision requirements on optical parts, and has a very high yield in mass production.Type: ApplicationFiled: November 6, 2016Publication date: May 11, 2017Applicant: ZHEJIANG CRYSTAL-OPTECH.CO., LTD.Inventors: Zhenjie LIU, Wenzi ZHANG, Jianjun ZHOU
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Patent number: 9600061Abstract: The present disclosure provides a power supply module and a power supply system. The power supply module is used as a first power supply module in a computing system which further includes a second power supply module. The first power supply module and the second power supply module are cascaded in sequence. The first power supply module is in a power supplying state and the second power supply module is in an off state. The first power supply module itself is capable of automatically determining whether to turn on another power supply module or not, without any human intervention. In this way, the power distribution board can be simplified, or even eliminated, in which case the individual power supply modules can be connected by wire to reduce the cost.Type: GrantFiled: July 26, 2011Date of Patent: March 21, 2017Assignees: Lenovo (Beijing) Limited, Beijing Lenovo Software Ltd.Inventor: Jianjun Zhou
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Publication number: 20160320041Abstract: A refrigerating apparatus includes a cabinet body having an open top; a door body (2) disposed at the top of the cabinet body pivotably around a pivot shaft (421) so as to open and close the cabinet body; and a light assembly (3), disposed at a side of the door body (2) facing the cabinet body (2) and arranged adjacent to the pivot shaft (421), wherein the light assembly (3) includes a PCB (31), an LED light (32) and a gravity switch (33), both the LED light (32) and the gravity switch (33) are connected onto the PCB (31), and the gravity switch (33) is configured to be switched on to light the LED light (32) so as to light an interior of the cabinet body when the door body (2) opens the cabinet body, and switched off to extinguish the LED light (32) when the door body (2) closes the cabinet body.Type: ApplicationFiled: December 30, 2013Publication date: November 3, 2016Inventors: JIANJUN ZHOU, HUAWEI ZHANG, XIANGHAI PU, MINGFENG XU
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Patent number: 8947174Abstract: The present disclosure relates to telecommunication, and in particular, to a base station Radio Frequency (RF) duplexer, an RF module, and an RF system. A base station RF apparatus provided herein includes: an enclosure, an intermediate RF processing unit, and a duplexer. The enclosure is located on the duplexer; the intermediate RF processing unit is located inside a cavity enclosed by the enclosure and the duplexer, or on the duplexer; a duplexer cavity and a heat dissipation part exist on the surface of the duplexer; the opening of the duplexer cavity is opposite to or against the enclosure; the heat dissipation part is designed to dissipate heat of the intermediate RF processing unit; and the duplexer is integrally molded. The foregoing technical solution requires no external fasteners, reduces the time of production and assembly. In addition, waterproof design and shielding design are not required, and thus improves the reliability.Type: GrantFiled: March 3, 2014Date of Patent: February 3, 2015Assignee: Huawei Technologies Co., Ltd.Inventors: Haizhao Wang, Guangfu Si, Naier Meng, Bo Yang, Puke Zhou, Shengxiang Guo, Yi Zhang, Weihua Sun, Jianjun Zhou, Ke Zhang, Hao Li, Zhiwei Shang, Runxiao Zhang
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Publication number: 20140176256Abstract: The present disclosure relates to telecommunication, and in particular, to a base station Radio Frequency (RF) duplexer, an RF module, and an RF system. A base station RF apparatus provided herein includes: an enclosure, an intermediate RF processing unit, and a duplexer. The enclosure is located on the duplexer; the intermediate RF processing unit is located inside a cavity enclosed by the enclosure and the duplexer, or on the duplexer; a duplexer cavity and a heat dissipation part exist on the surface of the duplexer; the opening of the duplexer cavity is opposite to or against the enclosure; the heat dissipation part is designed to dissipate heat of the intermediate RF processing unit; and the duplexer is integrally molded. The foregoing technical solution requires no external fasteners, reduces the time of production and assembly. In addition, waterproof design and shielding design are not required, and thus improves the reliability.Type: ApplicationFiled: March 3, 2014Publication date: June 26, 2014Applicant: Huawei Technologies Co., Ltd.Inventors: Haizhao WANG, Guangfu SI, Naier MENG, Bo YANG, Puke ZHOU, Shengxiang GUO, Yi ZHANG, Weihua SUN, Jianjun ZHOU, Ke ZHANG, Hao LI, Zhiwei SHANG, Runxiao ZHANG
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Publication number: 20140006687Abstract: Embodiments of the present invention disclose a data cache apparatus, and a data storage system and method. The data cache apparatus is coupled to a data processing device through a data interface. The data cache apparatus includes a controller and a memory coupled to the controller. The memory is configured to cache hot data in a hard disk that is connected to the data cache apparatus. The controller is configured to read data from or write data into the memory according to a data reading/writing request of the data processing device.Type: ApplicationFiled: January 14, 2013Publication date: January 2, 2014Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jianmin Huang, Tongling Song, Jianjun Zhou
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Publication number: 20130232362Abstract: The present disclosure provides a power supply module and a power supply system. The power supply module is used as a first power supply module in a computing system which further includes a second power supply module. The first power supply module and the second power supply module are cascaded in sequence. The first power supply module is in a power supplying state and the second power supply module is in an off state. The first power supply module itself is capable of automatically determining whether to turn on another power supply module or not, without any human intervention. In this way, the power distribution board can be simplified, or even eliminated, in which case the individual power supply modules can be connected by wire to reduce the cost.Type: ApplicationFiled: July 26, 2011Publication date: September 5, 2013Applicants: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) LIMITEDInventor: Jianjun Zhou
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Patent number: 8385873Abstract: An equivalent radio frequency (RF) notch filter, an RF chip, and a receiver are provided. The equivalent RF notch filter includes: a local oscillation (LO) circuit, configured to provide a LO frequency signal; configured to be connected in parallel with the main chain, and down-convert signals of the main chain; and a frequency selective circuit realized by impedance difference, configured to provide different impedances for down-converted signals with different frequencies from the mixing circuit, so as to absorb the signals that need to be suppressed.Type: GrantFiled: May 27, 2011Date of Patent: February 26, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Jianjun Zhou, Zhuobiao He, Fan Yang, Yusong Chi, Meng Wang, Hongyu Wang, Xinfang Liu, Min Yi, Xinrong Hu
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Publication number: 20120324088Abstract: A multi-service node management system includes: at least two service nodes, where each of the service node is disposed with a baseboard management controller (BMC); a module management controller (MMC), having one end configured to perform data communication with the BMC in each service node of the at least two service nodes, and the other end performing data communication with a shared module; and the shared module, on which sharing management is performed by BMCs in the service nodes through an MMC.Type: ApplicationFiled: August 24, 2012Publication date: December 20, 2012Inventors: Jianjun Zhou, Zhan Wu, Lin Xiao
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Publication number: 20110230157Abstract: An equivalent radio frequency (RF) notch filter, an RF chip, and a receiver are provided. The equivalent RF notch filter includes: a local oscillation (LO) circuit, configured to provide a LO frequency signal; configured to be connected in parallel with the main chain, and down-convert signals of the main chain; and a frequency selective circuit realized by impedance difference, configured to provide different impedances for down-converted signals with different frequencies from the mixing circuit, so as to absorb the signals that need to be suppressed.Type: ApplicationFiled: May 27, 2011Publication date: September 22, 2011Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jianjun ZHOU, Zhuobiao HE, Fan YANG, Yusong CHI, Meng WANG, Hongyu WANG, Xinfang LIU, Min YI, Xinrong HU
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Patent number: 7995336Abstract: A rear board of a blade server, a blade server and a subrack are provided. The blade server includes a front board and a back board, the rear board includes a standard ATCA interface, and the rear board is connected to the front board by the standard ATCA interface. The blade server also includes a connector configured to connect hard disks which is set on the rear board, and a portion of the rear board on which the connector is set is extended outward so as to accommodate at least two hard disks, and the at least two hard disks are connected to the connector. The blade server increases the ability of the heat dissipation ability of the front board, and the rear board supports data backup between the two hard disks and hot plug.Type: GrantFiled: July 15, 2009Date of Patent: August 9, 2011Assignee: Huawei Technologies Co., Ltd.Inventors: Yinzhong Tang, Zhenyu Zhuang, Jie He, Jianjun Zhou
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Publication number: 20100207705Abstract: The present disclosure relates to telecommunication, and in particular, to a base station Radio Frequency (RF) duplexer, an RF module, and an RF system. A base station RF apparatus provided herein includes: an enclosure, an intermediate RF processing unit, and a duplexer. The enclosure is located on the duplexer; the intermediate RF processing unit is located inside a cavity enclosed by the enclosure and the duplexer, or on the duplexer; a duplexer cavity and a heat dissipation part exist on the surface of the duplexer; the opening of the duplexer cavity is opposite to or against the enclosure; the heat dissipation part is designed to dissipate heat of the intermediate RF processing unit; and the duplexer is integrally molded. The foregoing technical solution requires no external fasteners, reduces the time of production and assembly. In addition, waterproof design and shielding design are not required, and thus improves the reliability.Type: ApplicationFiled: February 12, 2010Publication date: August 19, 2010Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Haizhao Wang, Guangfu Si, Naier Meng, Bo Yang, Puke Zhou, Shengxiang Gao, Yi Zhang, Weihua Sun, Jianjun Zhou, Ke Zhang, Hao Li, Zhiwei Shang, Runxiao Zhang
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Publication number: 20090273897Abstract: A rear board of a blade server, a blade server and a subrack are provided. The blade server includes a front board and a back board, the rear board includes a standard ATCA interface, and the rear board is connected to the front board by the standard ATCA interface. The blade server also includes a connector configured to connect hard disks which is set on the rear board, and a portion of the rear board on which the connector is set is extended outward so as to accommodate at least two hard disks, and the at least two hard disks are connected to the connector. The blade server increases the ability of the heat dissipation ability of the front board, and the rear board supports data backup between the two hard disks and hot plug.Type: ApplicationFiled: July 15, 2009Publication date: November 5, 2009Inventors: Yinzhong TANG, Zhenyu ZHUANG, Jie HE, Jianjun ZHOU
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Patent number: 7602246Abstract: A single-stage amplifier includes (1) first and second “gain” transistors coupled in a common source configuration, (2) first and second resistors providing self-biasing for the first and second transistors, respectively, (3) first and second current sources providing bias currents for the first and second transistors, respectively, and (4) a load impedance coupled between the drains of the first and second transistors. The amplifier may further include (5) third and fourth “compensation” transistors coupled in parallel with, and used to compensate parasitic capacitances of, the first and second transistors, respectively, and (6) third and fourth resistors providing self-biasing for the third and fourth transistors, respectively. Variable gain may be achieved by varying the bias currents for the gain transistors. A two-stage amplifier may be formed with two stages coupled in cascade, with each stage including most or all of the circuit elements of the single-stage amplifier.Type: GrantFiled: September 1, 2004Date of Patent: October 13, 2009Assignee: QUALCOMM, IncorporatedInventors: Xuejun Zhang, Jianjun Zhou
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Publication number: 20050270098Abstract: A single-stage amplifier includes (1) first and second “gain” transistors coupled in a common source configuration, (2) first and second resistors providing self-biasing for the first and second transistors, respectively, (3) first and second current sources providing bias currents for the first and second transistors, respectively, and (4) a load impedance coupled between the drains of the first and second transistors. The amplifier may further include (5) third and fourth “compensation” transistors coupled in parallel with, and used to compensate parasitic capacitances of, the first and second transistors, respectively, and (6) third and fourth resistors providing self-biasing for the third and fourth transistors, respectively. Variable gain may be achieved by varying the bias currents for the gain transistors. A two-stage amplifier may be formed with two stages coupled in cascade, with each stage including most or all of the circuit elements of the single-stage amplifier.Type: ApplicationFiled: September 1, 2004Publication date: December 8, 2005Inventors: Xuejun Zhang, Jianjun Zhou
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Publication number: 20040232991Abstract: Compensation for variations in temperature and manufacturing process of a MOSFET operating in its sub-threshold mode. The compensation may include circuitry containing at least a second MOSFET that may also operate in its sub-threshold mode. The operational characteristics of the second MOSFET may be closely matched to those of the first MOSFET, and the second MOSFET may be contained on the same substrate.Type: ApplicationFiled: May 23, 2003Publication date: November 25, 2004Inventors: Jianjun Zhou, Xuejun Andy Zhang
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Patent number: 6819183Abstract: Compensation for variations in temperature and manufacturing process of a MOSFET operating in its sub-threshold mode. The compensation may include circuitry containing at least a second MOSFET that may also operate in its sub-threshold mode. The operational characteristics of the second MOSFET may be closely matched to those of the first MOSFET, and the second MOSFET may be contained on the same substrate.Type: GrantFiled: May 23, 2003Date of Patent: November 16, 2004Assignee: Qualcomm, IncorporatedInventors: Jianjun Zhou, Xuejun (Andy) Zhang
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Patent number: 6531860Abstract: A power detector (50) detects a power level of an amplified signal (S20) produced by a power amplifier (16) on the same integrated circuit (100). The power detector compensates for an effect of temperature variations on the magnitude of the detected power level.Type: GrantFiled: June 14, 2001Date of Patent: March 11, 2003Assignee: Qualcomm Inc.Inventors: Jianjun Zhou, Jonathan Klaren, Charles J. Persico
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Patent number: RE45831Abstract: A rear board of a blade server, a blade server and a subrack are provided. The blade server includes a front board and a back board, the rear board includes a standard ATCA interface, and the rear board is connected to the front board by the standard ATCA interface. The blade server also includes a connector configured to connect hard disks which is set on the rear board, and a portion of the rear board on which the connector is set is extended outward so as to accommodate at least two hard disks, and the at least two hard disks are connected to the connector. The blade server increases the ability of the heat dissipation ability of the front board, and the rear board supports data backup between the two hard disks and hot plug.Type: GrantFiled: August 9, 2013Date of Patent: December 29, 2015Assignee: HUAWEI TECHNOLOGIES CO., LTDInventors: Yinzhong Tang, Zhenyu Zhuang, Jie He, Jianjun Zhou