Patents by Inventor Yifei Zhang

Yifei Zhang 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).

  • Publication number: 20180173268
    Abstract: An operating device and an operating method are disclosed. The operating device includes a processing assembly and a control assembly. The control assembly includes a control body, an auxiliary unit and a collecting unit. The auxiliary unit is arranged on the control body, a limb of a user is put on said auxiliary unit, and the collecting unit is arranged on the limb of the user. The collecting unit is configured to collect trembling signals indicating limb trembling of the user, and transmit the trembling signals to the processing assembly. The processing assembly is configured to generate driving signals according to the trembling signals and transmit the driving signals to the auxiliary unit. The auxiliary unit is configured to keep a motion state of said auxiliary unit to be the same as a limb trembling state of the user according to said driving signals.
    Type: Application
    Filed: May 4, 2017
    Publication date: June 21, 2018
    Inventors: Kai ZHAO, Yu GU, Ying ZHANG, Hongli DING, Yifei ZHANG
  • Patent number: 9940994
    Abstract: A circuit and method performs a write assist for a memory cell (e.g., a static random access memory cell (SRAM)). The method includes providing a lower supply voltage signal to a voltage supply node of the memory cell using a capacitor. The lower supply voltage signal is lower in voltage level than a supply voltage signal. The method further includes lowering a common signal provided to a write driver using the capacitor.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: April 10, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Yifei Zhang, Mark J. Winter
  • Publication number: 20180085629
    Abstract: The present disclosure provides a smart walking recommendation apparatus and a corresponding method, the apparatus includes an information obtaining module configured to obtain destination information and appointed arrival time information, a positioning module configured to obtain a start position of a user, a central processing module configured to calculate a distance from the start position to a destination based on the start position and the destination information, and determine whether to recommended walking based on the distance from the start position to the destination, an empirical speed, and the appointed arrival time information, and an output module configured output a walking recommendation to the user in response to determining to recommend walking.
    Type: Application
    Filed: May 30, 2016
    Publication date: March 29, 2018
    Inventors: Yu GU, Hongli DING, Kai ZHAO, Ying ZHANG, Yifei ZHANG
  • Publication number: 20180074083
    Abstract: A nanorobot, comprising: a load part, configured to load a labeling reagent; a power part, configured to generate power according to an environmental condition, a direction of the power being a direction away from the load part; and a connecting part, respectively connected with the load part and the power part, so that the power part seals the load part, wherein, the connecting part is configured to be disconnected when the power is greater than a preset value.
    Type: Application
    Filed: October 24, 2016
    Publication date: March 15, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yifei ZHANG, Zuo YUAN
  • Publication number: 20180060919
    Abstract: An embodiment of the present disclosure provides an intelligent dresser and a corresponding cloud expert device. The intelligent dresser introduces the cloud expert device on the basis of a conventional dresser to implement a customized recommendation of cosmetic product. The embodiment of the present disclosure meets the requirement of user's personalized and specialized requirements on cosmetic product caring to get a more targeted and effective skin care and dressing. Meanwhile, the embodiment of the present disclosure also provides a virtual dresser based on a mobile terminal, and has a good application prospect and valuable market.
    Type: Application
    Filed: September 5, 2016
    Publication date: March 1, 2018
    Inventors: Yu Gu, Junmin Sun, Zhongcheng Gui, Hongli Ding, Kai Zhao, Yifei Zhang, Ying Zhang
  • Publication number: 20180050563
    Abstract: An omni wheel, a motion device and a control method thereof are disclosed. The omni wheel includes a center wheel and a plurality of peripheral wheels distributed in a circle with respect to an axis of the center wheel; and a peripheral wheel brake component disposed on the centre wheel and configured to control a resistance of the peripheral wheels during a rotation of the peripheral wheels. The omni wheel solves the problem of low braking performance of the motion device by increasing the resistance of the peripheral wheels during rotation, and avoids any random rotation of the peripheral wheels.
    Type: Application
    Filed: September 9, 2016
    Publication date: February 22, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Ying Zhang, Yifei ZHANG, Kai ZHAO, Yu GU, Hongli DING, Shuai LIU
  • Publication number: 20180042804
    Abstract: A powered exoskeleton includes a leg part and a foot part. The foot part includes a foot bottom plate and a foot bottom plate driving wheel. The foot bottom plate includes a first surface and a second surface opposite to each other; and the foot bottom plate driving wheel is connected below the leg part. The foot bottom plate is movably connected to the foot bottom plate driving wheel and capable of being turned over relative to the foot bottom plate driving wheel. In the walking mode, the foot bottom plate is turned over till the first surface of the foot bottom plate faces upward and is connected below the foot bottom plate driving wheel; and in the wheeled movement mode, the foot bottom plate is turned over till a second surface of the foot bottom plate faces upward and is connected above the foot bottom plate driving wheel.
    Type: Application
    Filed: August 31, 2016
    Publication date: February 15, 2018
    Inventors: Ying ZHANG, Zhongcheng Gui, Yifei ZHANG, Kai ZHAO, Yu GU, Hongli DING
  • Publication number: 20180036146
    Abstract: A mechanical exoskeleton wearable apparatus and an operation control method as well as an operation control device for the same are provided in the embodiments of the disclosure, so as to enrich usable functionalities of the mechanical exoskeleton wearable apparatus. The mechanical exoskeleton wearable apparatus includes a foot wearable mechanism; a leg wearable mechanism including: shank supports articulated with the foot wearable mechanism, thigh supports articulated with the shank supports, and first stroke regulators articulated with the foot wearable mechanism and the thigh supports respectively at both ends; and a hip support mechanism configured to connect with the thigh supports. Each of the first stroke regulators is configured to be extendable and retractable with a leg action of a user, and an extending or retracting condition thereof is lockable.
    Type: Application
    Filed: July 12, 2017
    Publication date: February 8, 2018
    Inventors: Yifei Zhang, Kai Zhao, Ying Zhang, Yu Gu, Hongli Ding
  • Patent number: 9866727
    Abstract: An image calibration method and device. A deviation compensation coefficient of each pixel is calculated according to image data generated by strong and weak lighting parameters, and the deviation compensation coefficient is used to calibrate data of each image pixel collected and output by an image sensing unit. Therefore, the influence of inconsistency of each photosensitive element of the image sensing unit on the image greyscale can be eliminated, so that the effect of document medium image recognition is increased. The method in the embodiments of the present invention comprises: S1, acquiring a strong lighting parameter of each photosensitive element within a long exposure time and a weak lighting parameter thereof within a short exposure time; S2, acquiring image data of a sheet medium; and S3, according to the strong lighting parameter, the weak lighting parameter and the image data, calculating the calibrated image data of the sheet medium.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 9, 2018
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Qianwen Wang, Tiancai Liang, Mengtao Liu, Yifei Zhang
  • Patent number: 9837110
    Abstract: Various embodiments provide the position error signal (PES) that is generated by the data read channel that uses internal signals such as analog-to-digital signals, recovered data bits and signals or other internal signals to determine read head off-track metrics. Several different metrics can be utilized including a normalized norm metric, a normalized cross correlation metric, and a cross correlation with detected data metric. These metrics can be utilized to determine off-track shift of one or more read heads such that the read head position can be corrected.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: December 5, 2017
    Assignee: Marvell International Ltd.
    Inventors: Mats Oberg, Gregory Burd, Yifei Zhang, Qiyue Zou
  • Publication number: 20170313395
    Abstract: A lifesaving device and a lifesaving control method are provided. Wherein, the lifesaving device includes: at least one first detection module (200) configured for detecting human body biological characteristic information, a lifesaving device body (100) capable of being worn on a body of a user, and at least one first gasbag module (300) arranged on the lifesaving device body (100); after the first gasbag module (300) is activated, a lifesaving gasbag (1) can be popped up; the first detection module (200) is in signal connection with the first gasbag module (300) and is configured for activating the first gasbag module (300) when the biological characteristic information detected meets a first preset condition.
    Type: Application
    Filed: August 22, 2016
    Publication date: November 2, 2017
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zuo YUAN, Yifei ZHANG
  • Patent number: 9797190
    Abstract: The invention discloses a louver roller system with an intermittent gear turning mechanism, comprising a base and a top cover, wherein a roller mechanism and an intermittent gear turning mechanism are mounted on the base, the roller mechanism is wound with ladder tapes, the roller mechanism is in axial connection with the intermittent gear turning mechanism, and the roller mechanism and the intermittent gear turning mechanism are driven to rotate by a square shaft. The roller mechanism controls horizontal rising and falling of secondary louver blades, and the roller within the roller mechanism rotates to wind or unwind the ladder tapes thereon and sequentially drives various secondary louver blades to rise and fall horizontally. When various secondary louver blades rise to a predetermined position, the intermittent gear turning mechanism drives a turning cylinder to rotate, so as to achieve turning of all louver blades.
    Type: Grant
    Filed: July 28, 2013
    Date of Patent: October 24, 2017
    Inventors: Yifei Zhang, Chengshang Wu
  • Publication number: 20170294223
    Abstract: A circuit and method performs a write assist for a memory cell (e.g., a static random access memory cell (SRAM)). The method includes providing a lower supply voltage signal to a voltage supply node of the memory cell using a capacitor. The lower supply voltage signal is lower in voltage level than a supply voltage signal. The method further includes lowering a common signal provided to a write driver using the capacitor.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 12, 2017
    Applicant: BROADCOM CORPORATION
    Inventors: Yifei Zhang, Mark J. Winter
  • Patent number: 9767891
    Abstract: Passive write assist passively improves SRAM performance (e.g., write margin speed) while reducing manufacturing costs (e.g., die area, packaging) and operating costs (e.g., power consumption, cooling) associated with active write assist schemes. Passive write assist may be implemented in peripheral circuitry or embedded in an SRAM array or even in each array cell or bitcell. For example, one or more memory cells may be converted to provide passive write assist to a plurality of other memory cells. As another example, each memory cell may independently implement passive write assist using one or more high resistive contacts to couple to the array power supply, resulting in the array voltage level being changed by different amounts in different memory cells according to cell variations.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 19, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Yifei Zhang, Myron Buer, Mark Winter
  • Patent number: 9749787
    Abstract: The invention discloses a ZigBee-based article searching method, device and system. The method includes: receiving article label signal sent by an article label; generating article position information according to intensity of the article label signal and reference label signal intensity corresponding to at least one preset reference label; and sending the article position information to a terminal device of a user. In the technical solutions provided by the invention, article position information is generated according to the article label signal intensity and the reference label signal intensity corresponding to at least one preset reference label, and then the article position information is sent to the terminal device of the user, so that the position information of an article can be obtained in real time by adopting the solutions of the invention.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: August 29, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yifei Zhang
  • Patent number: 9672853
    Abstract: Various embodiments provide the position error signal (PES) that is generated by the data read channel that uses internal signals such as analog-to-digital signals, recovered data bits and signals or other internal signals to determine read head off-track metrics. Several different metrics can be utilized including a normalized norm metric, a normalized cross correlation metric, and a cross correlation with detected data metric. These metrics can be utilized to determine off-track shift of one or more read heads such that the read head position can be corrected.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 6, 2017
    Assignee: Marvell International Ltd.
    Inventors: Mats Oberg, Gregory Burd, Yifei Zhang, Qiyue Zou
  • Patent number: 9580958
    Abstract: A louver roller mechanism is described herein. The louver roller mechanism comprises a turning cylinder in which at least one roller is mounted, a turning cylinder cover is mounted at the opening of the turning cylinder, the turning cylinder and the turning cylinder cover are sequentially and axially mounted on a rotating shaft, and a square shaft is mounted in the rotating shaft. A roller system consisting of a roller mechanism and a gear clutch turning mechanism is also described, which comprises a base and a top cover. The roller mechanism and the gear clutch turning mechanism are set on the base, the roller mechanism is wound with ladder tapes, the roller mechanism is in axial connection with the gear clutch turning mechanism, and the roller mechanism and the gear clutch turning mechanism are driven to rotate by the square shaft.
    Type: Grant
    Filed: July 28, 2013
    Date of Patent: February 28, 2017
    Assignee: HANGZHOU WOKASOLAR TECHNOLOGY CO., LTD.
    Inventors: Yifei Zhang, Chengshang Wu
  • Publication number: 20170034652
    Abstract: The invention discloses a ZigBee-based article searching method, device and system. The method includes: receiving article label signal sent by an article label; generating article position information according to intensity of the article label signal and reference label signal intensity corresponding to at least one preset reference label; and sending the article position information to a terminal device of a user. In the technical solutions provided by the invention, article position information is generated according to the article label signal intensity and the reference label signal intensity corresponding to at least one preset reference label, and then the article position information is sent to the terminal device of the user, so that the position information of an article can be obtained in real time by adopting the solutions of the invention.
    Type: Application
    Filed: March 31, 2016
    Publication date: February 2, 2017
    Inventor: Yifei ZHANG
  • Patent number: 9493983
    Abstract: The invention discloses a louver roller system with a cam pin turning mechanism, including a base and a top cover, wherein a roller mechanism and a cam pin turning mechanism are mounted on the base, the roller mechanism is wound with ladder tapes, the roller mechanism is in axial connection with the cam pin turning mechanism, and the roller mechanism and the cam pin turning mechanism are driven to rotate by a square shaft. The roller mechanism controls horizontal rising and falling of secondary louver blades, and the roller within the roller mechanism rotates to wind or unwind the ladder tapes thereon and sequentially drives various secondary louver blades to rise and fall horizontally. When various secondary louver blades rise to a predetermined position, the roller drives the cam pin turning mechanism to bring a turning cylinder to rotate, so as to achieve turning of all louver blades.
    Type: Grant
    Filed: July 28, 2013
    Date of Patent: November 15, 2016
    Assignee: HANGZHOU WOKASOLAR TECHNOLOGY CO., LTD.
    Inventors: Yifei Zhang, Chengshang Wu, Gang Gui, Huiwen Xu
  • Patent number: 9397698
    Abstract: Systems and methods for error recovery are presented. Data is decoded with an iterative decoding scheme having a first set of parameters. In response to a determination that the iterative decoding scheme has failed, the data is re-read. While the data is being re-read, the iterative decoding scheme is reconfigured with a second set of parameters, and the data is decoded with the reconfigured iterative decoding scheme. In response to determination that the reconfigured iterative decoding scheme has failed, an error type associated with the data is determined. An error recovery scheme is selected from a plurality of error recovery schemes for the data based on the determined error type.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: July 19, 2016
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Gregory Burd, Nedeljko Varnica, Yifei Zhang, Nitin Nangare