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Peking University patents


Recent patent applications related to Peking University. Peking University is listed as an Agent/Assignee. Note: Peking University may have other listings under different names/spellings. We're not affiliated with Peking University, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "P" | Peking University-related inventors


Compositions and methods for reprograming non-neuronal cells into neuron-like cells

Cocktails of chemical inducers of neuron-like properties (cinp) is provided, which includes camp agonists, neurogenic small molecules, glycogen synthase kinase inhibitors, tgfβ receptor inhibitors, and bet family bromodomain inhibitors and optionally, a selective inhibitor of rock or p38 mapk. These cocktails are used in a method of inducing neuron-like properties in partially or completely differentiated non-neuronal cells. ... Peking University

Low-illumination image processing method and device

A low-illumination image processing method and device address the problem of noise amplification in existing contrast enhancement techniques when applied to original low-illumination image. A noise suppression filter is additionally arranged before an operation of contrast enhancement, and smoothing processing is performed on an inverse color image of a low-illumination image by adopting a first filtering coefficient and a second filtering coefficient, so that image contrast is enhanced while random noise is suppressed. ... Peking University

Method for carrying out anaerobic digestion by using heavy metal ions-rich biomass waste materials

Provided is a method for performing anaerobic digestion by utilizing a heavy metal ion enriched biomass waste material, comprising: putting a biochar made from the raw materials such as garden rubbish and agricultural and forestry waste, or a plant for adsorbing heavy metal ions in waste water containing heavy metal ions, and obtaining a heavy metal saturated biochar or a heavy metal super-enriched plant; and then adding in a kitchen waste anaerobic digestion methane generation system at a certain ratio. The heavy metal ions adsorbed in the plant or the biochar are utilized as a basic component of an anaerobic reaction enzyme to promote the growth of methane bacteria, activate the activity of the enzyme, shorten the time of a hydrolysis acidification stage, reduce vfa accumulation, and accelerate the generation of energy products such as methane and the like.. ... Peking University

A damping control method for lower-limb prostheses

A damping control method for lower-limb prosthesis, comprising the following steps: isolate the driving motor of the transmission structure from the driving voltage; the motor is driven to rotate by the force that results from the locomotion of human's com (center of mass), and generates alternating induced voltage, when the motor behaves as a generator; connect the output terminals of the motor with a full-bridge rectification circuit that is made of schottky diodes to transform the alternating induced voltage to direct-current voltage; connect the output terminals of the rectification circuit with a controlled switch to form a closed circuit, which will generate induced current from the induced voltage; control the on-off ratio of the switch with the pulse-width-modulation signal to generate controllable motor current, which will result in controllable braking torque under the magnet field of the motor. This invention can be applied to prosthesis control.. ... Peking University

Method and system for video frame interpolation based on optical flow method

A method and system for video frame interpolation based on an optical flow method is disclosed. The process includes calculating bidirectional motion vectors between two adjacent frames in a frame sequence of input video by using the optical flow method, judging reliabilities of the bidirectional motion vectors between the two adjacent frames, and processing a jagged problem and a noise problem in the optical flow method; marking “shielding” and “exposure” regions in the two adjacent frames, and updating an unreliable motion vector; with regard to the two adjacent frames, according to marking information about the “shielding” and “exposure” regions and the bidirectional motion vector field, mapping front and back frames to an interpolated frame to obtain a forward interpolated frame and a backward interpolated frame; synthesizing the forward interpolated frame and the backward interpolated frame into the interpolated frame; repairing a hole point in the interpolated frame to obtain a final interpolated frame. ... Peking University

Use of a statin compound as local drug for treating obesity, diabetes, hypertension and hyperlipemia

The invention discloses a use of a statin compound in the preparation of local drugs for improving lipid metabolism and treating obesity, hypertension, hyperlipidemia, fatty liver and hyperglycemia; and statin compound local compositions for improving lipid metabolism and treating obesity, hypertension, fatty liver, hyperlipidemia, atherosclerosis, coronary heart disease, apoplexy and other cardiovascular and cerebrovascular diseases, and drug formulation and preparation method thereof.. . ... Peking University

Thiazolopyrimidinone compounds and preparation methods and use thereof

The present invention provides structural details of a thiazolopyrimidinone compound, a preparation method thereof, and use thereof in the manufacture of a medicament for the treatment of central nervous system diseases.. . ... Peking University

Dynamic two-way guide and drainage control method for leachate and landfill gas

Provided is a dynamic two-way guide and drainage control method for leachate and landfill gas. The dynamic two-way guide and drainage control method is used in a waste landfill. ... Peking University

A method and a device for extracting local features of a three-dimensional point cloud

A method and a device for extracting local features of a 3d point cloud are disclosed. Angle information and the concavo-convex information about a feature point to be extracted and a point of an adjacent body element are calculated based on a local reference system corresponding to the points of each body element. ... Peking University

Apparatus and method for in-situ testing impact strength of micro-structure

Disclosed is an apparatus for in-situ testing impact strength of a micro-structure, comprising: a flexible beam, one end of which being fixed; an impact mass block disposed at the other end of the flexible beam and configured to exert an impact on the micro-structure; and a locking member comprising a beam arm and a plurality of locking teeth, wherein the beam arm is perpendicular to the flexible beam and one end of the beam arm is fixed, and wherein the plurality of locking teeth are distributed at intervals along the beam arm, such that the other end of the flexible beam is engaged to one of the plurality of locking teeth when the flexible beam is loaded. A method for testing an impact strength of a micro-structure is also disclosed.. ... Peking University

Shift register, unit thereof, and display device

The present application discloses a shift register and units thereof, wherein low voltage level maintaining module (30) includes: a first maintaining unit (31) and a second maintaining unit (32), configured to maintain a signal output terminal and/or the controlling terminal (q) of the driving module (20) at low voltage level when an effective level is received. A threshold voltage sensing module (40) is coupled between the first maintaining unit (31) and the second maintaining unit (32), the threshold voltage sensing module (40) is configured to control its signal output terminal to provide an effective level to the second maintain-enabling terminal (p2) according to threshold voltage shift of the first maintaining unit (31) sensed. ... Peking University

Photoelectric sensor and display panel

A photoelectric sensor and a display panel comprise: a pulse transmission unit comprising a control node, after obtaining a driving voltage, the control node of the pulse transmission unit transmitting first clock signals to a signal output terminal; a pulse control unit configured to receive scanning signals from a signal input terminal and charging the control node of the pulse transmission unit so as to provide the driving voltage; and photoelectric sensing unit configured to provide a leakage current in response to the intensity of external illumination when receiving the external illumination, the leakage current discharging the control node of the pulse transmission unit, so that the voltage at the control node of the pulse transmission unit is less than the driving voltage after a period of time. The circuit of the photoelectric sensor utilizes the existing scanning signals and clock signals of a conventional display panel, with no need for an extra control signal, and therefore the circuit is simple in structure, and more suitable for being integrated on the display panel.. ... Peking University

Device and use thereof in cell experiments in vitro

The invention provides a device and the use thereof in a cell experiment in vitro. This device has a polydopamine layer-carboxymethyl chitosan layer-peptide layer structure, which is capable of regulating behaviors of human pluripotent stem cells and is useful in cell culture or a cell experiment in vitro.. ... Peking University

Method and system for image de-blurring

A method for image de-blurring includes estimating an intermediate image l by marking and constraining an edge region and a smooth region in an input image; estimating a blur kernel k by extracting salient edges from the intermediate image l, wherein the salient edges have scales greater than those of the blur kernel k; and restoring the input image to a clear image by performing non-blind deconvolution on the input image and the estimated blur kernel k. Imposing constraints on the edge region and the smooth region allows the intermediate image to maintain the edge while effectively removing noise and ringing artifacts in the smooth region. ... Peking University

05/10/18 / #20180130415

Gate driving circuit, unit thereof, and display device

The present application provides a gate driver circuit comprising at least one cascaded gate driver circuit unit. The low-level-holding enabling terminal of the gate driver circuit unit is connected to an adaptive voltage generating module. ... Peking University

05/10/18 / #20180130412

Pixel circuit, driving method therefor, and display device

Provided is a pixel circuit. The pixel circuit comprises a driving transistor and a light-emitting element both coupled in series between a first level end and a second level end, and comprises a second transistor, a third transistor, a fourth transistor, a first capacitor and a second capacitor. ... Peking University

05/10/18 / #20180130392

Low-voltage digital-to-analog signal conversion circuit, data driving circuit, and display system

The present application discloses a low-voltage digital to analog conversion circuit, a data driving circuit and a display system. At least one voltage dividing unit comprises a number of resistors connected in series between a lower limit of voltage and an upper limit of voltage, and voltage dividing output terminals drawn from the resistors' connection nodes and an upper limit of voltage connection end. ... Peking University

04/19/18 / #20180109791

A method and a module for self-adaptive motion estimation

A self-adaptive motion estimation module includes a macro block division unit, a macro block selection unit, a motion intensity judgment unit, and a motion estimation unit. A video frame to be encoded is divided into macro blocks by the macro block division unit. ... Peking University

03/29/18 / #20180090709

Planar electroluminescent devices and uses thereof

The present invention provides a planar electroluminescence (el) device comprising a substrate layer, an electrode layer, a light emitting layer, and a modulating layer, wherein the electrode layer comprises a plurality of electrodes arranged on a same level over the substrate layer, and there is no contact between adjacent electrodes. In one embodiment, the device further comprises a hole injection layer (hil), a hole transport layer (htl), an electron injection layer (eil) and an electrode transport layer (etl). ... Peking University

03/08/18 / #20180067363

Display substrate, display panel, and display apparatus having the same

The present application discloses a display substrate having a base substrate, a quantum dot layer on the base substrate capable of emitting light of a first color when excited by light of a second color, and a light filtering layer for blocking at least a portion of the quantum dot layer from receiving light of the second color provided by ambient light.. . ... Peking University

03/01/18 / #20180061068

Depth/disparity map post-processing method and device

A method and a device for post-processing depth/disparity maps adopt a strategy of combining edge information and segmentation information when detecting irregular edge regions. The method includes dividing a color image into super pixels when performing image segmentation on a color image; partitioning a grayscale range into a preset number of intervals, and for each super pixel, statistically obtaining a histogram of all the pixel points that fall within the intervals; determining, in a current super pixel, whether a ratio of the number of pixels contained in the interval having a maximum interval distribution value, to the total number of pixels in the current super pixel is less than the first threshold; and if so, further dividing the current super pixel using a color-based segmentation method. ... Peking University

03/01/18 / #20180055819

Use of statins in the treatment of ischemic diseases

The invention discloses statins compounds used as local intraosseous application for the treatment of ischemic diseases, in particular, discloses local intraosseous application of statin compounds in the treatment of peripheral ischemic diseases or cardio-cerebrovascular ischemic diseases.. . ... Peking University

02/01/18 / #20180033365

Display device and pixel circuit thereof

A display device and a pixel circuit thereof. The pixel circuit generates threshold voltage information of a driving transistor (21) in a source following manner, a threshold voltage of the driving transistor (21) and a reference voltage related to gray scale information are generated at two ends of a first capacitor (26) by means of voltage division of the first capacitor (26) and a second capacitor (27), and the reference voltage keeps unchanged during a light-emitting process, so that a driving current flowing through a light-emitting device (25) is irrelevant to threshold voltages of the driving transistor (21) and the light-emitting device (25), thereby compensating the threshold voltage deviation of the driving transistor (21) and the light-emitting device (25), and solving the problem of nonuniform display. ... Peking University

01/25/18 / #20180022688

Compound, and separation method, synthesis method and use thereof

The invention relates to new compounds as well as a separation method, a synthetic method and use thereof. It is demonstrated by an assay on activity that the compound has an activity of inhibiting an hmg-coa reductase. ... Peking University

10/12/17 / #20170294583

Carbon nanotube semiconductor device and manufacturing method thereof

The present disclosure pertains to the field of carbon nanotube technologies, and provides a carbon nanotube semiconductor device and a manufacturing method thereof. The manufacturing method of a carbon nanotube semiconductor device provided in the present disclosure comprises: forming a carbon nanotube layer with a carbon nanotube solution; and treating the carbon nanotube layer with an acidic solution. ... Peking University

09/21/17 / #20170273003

Data transmission in mobile ad-hoc network

Techniques are generally described related to a mobile ad-hoc network. One example method for transmitting data from a source node to a destination node in a mobile ad-hoc network may include receiving a route reply packet from a first node by a second node; identifying the route reply packet as an overheard route reply packet by the second node; adding a first routing entry in a routing table of the second node and the first routing entry being associated with the overheard route reply packet by the second node; broadcasting a routing entry added message associated with the first routing entry by the second node; receiving data transmitted from a third node and the data being transmitted by the third node responsive to the routing entry added message by the second node; and sending data, received from, the third node towards the destination node via an active route established based on the first routing entry in the routing table of the second node by the second node.. ... Peking University

09/21/17 / #20170270862

Pixel circuit and drive method therefor, and display device

A pixel circuit, a drive method based on the pixel circuit, and a display device. The pixel circuit comprises: a first capacitor (c1), a second capacitor (c2), a second transistor (t2), a third transistor (t3) and a light-emitting branch for being coupled between a first common electrode (vdd) and a second common electrode (vss); wherein the light-emitting branch comprises a first transistor (t1), a fourth transistor (t4) and a light-emitting element (oled) which are connected in series; a first electrode of the first transistor (t1) is coupled to a second electrode of the fourth transistor (t4), and a coupling node is a third node (c); and a control electrode of the fourth transistor (t4) is used for inputting a second scanning control signal (vem), and the fourth transistor (t4) switches the on/off state of the light-emitting branch in response to the second scanning control signal (vem). ... Peking University

08/31/17 / #20170247256

Ultra-high density single-walled carbon nanotube horizontal array and its controllable preparation method

The present invention discloses single-walled carbon nanotubes horizontal arrays with ultra-high density and the preparation method. The method comprises the following steps: loading a catalyst on a single crystal growth substrate; after annealing, introducing hydrogen into a chemical vapor deposition system to conduct a reduction reaction of the catalyst; and maintaining the introduction of the hydrogen to conduct the orientated growth of a single-walled carbon nanotube. ... Peking University

08/10/17 / #20170230290

Multi-domain centralized content-centric networking

A multi-domain centralized content-centric networking (mccn), including: a management layer; a control layer; and a data layer. The management layer communicates with the data layer through the control layer. ... Peking University

07/27/17 / #20170213500

Controllable voltage source, shift register and unit thereof, and display

A controllable voltage source, comprising a control module (1), a storage module (2) and an output module (3); the control module (1) is coupled between a high level end and a low level end; the storage module (2) comprises a storage capacitor; two ends of the storage capacitor are respectively coupled to the control module (1) to form a first terminal and a second terminal; the output module (3) is coupled to the second terminal, and the signal output end thereof is used to output to an external circuit the voltage signal of the controllable voltage source; the control module (1) responds the effective level of a first clock signal so as to enable the first terminal to be coupled to the high level end, and the first terminal is charged from the high level end; the control module (1) responds the effective level of a second clock signal so as to enable the second terminal to be coupled to the high level end, and the second terminal is charged from the high level end; and the first terminal is coupled to the low level end and discharges via the low level end. The effective level of the first clock signal does not overlap with the effective level of the second clock signal. ... Peking University

07/13/17 / #20170200258

Super-resolution image reconstruction method and apparatus based on classified dictionary database

A super-resolution image reconstruction apparatus based on a classified dictionary database. The apparatus can select, from a training image, a first local block and a corresponding second down-sampled local block, extract corresponding features and combine the features into a dictionary group, and perform classification and pre-training on multiple dictionary groups by using calculated values of an lbs and an ses as classification marks, so as to obtain a classified dictionary database of multiple dictionary groups with classification marks. ... Peking University

07/13/17 / #20170196997

Rare earth-based nanoparticle magnetic resonance contrast agent and preparation method thereof

A rare earth-based nanoparticle magnetic resonance contrast agent and a preparation method thereof are provided. The rare earth-based nanoparticle magnetic resonance contrast agent is rare earth-based inorganic nanoparticles having the surfaces coated with hydrophilic ligands. ... Peking University

07/06/17 / #20170193635

Method and apparatus for rapidly reconstructing super-resolution image

A method and apparatus for rapidly reconstructing a super-resolution image. In the method and apparatus for rapidly reconstructing a super-resolution image provided in the present application, an original image is processed at least by means of iterative backward mapping based on a texture structural constraint during reconstruction of a super-resolution image of the original image, so as to enhance texture details of the image, thereby improving the high-frequency detail quality of the super-resolution image.. ... Peking University

06/08/17 / #20170158620

Compound with branching alkyl chains, method for preparing the same, and use thereof in photoelectric device

The invention discloses a compound having branching alkyl chains, the method for preparing the same and use thereof in photoelectric devices. By applying the branching alkyl chains as the solubilizing group to the preparation of organic conjugated molecules (for example, organic conjugated polymers), the number of methylenes between the resultant alkyl side chains and the backbone, i.e., m>1, which can effectively reduce the effect of the alkyl chains on the backbone π-π stacking, thereby ensuring the solubility of the organic conjugated molecule while greatly increasing the mobility of their carriers. ... Peking University

04/06/17 / #20170097650

Adaptive voltage source, shift register and unit thereof, and display

An adaptive voltage source, comprising a signal output end, and a reference resistance forming circuit and a sensing module connected in series between a voltage source and a low power level; the sensing module comprises a sensing end coupled to a transistor to be sensed to sense the threshold voltage drift of the transistor to be sensed in a device circuit; the equivalent resistance of the sensing module increases with the increase of the sensed threshold voltage drift; and the signal output end is coupled to a first node coupled to the reference resistance forming circuit and the sensing module, and is used to output adaptive voltage. The output adaptive voltage is adjusted via the threshold voltage drift sensed by the sensing module. ... Peking University

03/16/17 / #20170074722

Ultraviolet light sensing circuit and sensing system

An ultraviolet light sensing circuit and sensing system. The ultraviolet light sensing circuit comprises a modulation unit and a phase delay unit, wherein the modulation unit comprises a first stage of inverter which is used for sensing ultraviolet light and is used as a voltage feedback modulation stage; and the phase delay unit comprises n stages of inverters which are connected in sequence, where n is an even number which is greater than or equal to 2. ... Peking University

01/26/17 / #20170026665

Method and device for compressing local feature descriptor, and storage medium

A method for compressing a local feature descriptor includes that: at least one local feature descriptor of a target image is selected; and multi-stage vector quantization is carried out on the selected at least one local feature descriptor according to a pre-set code book, and the local feature descriptor is quantized as a feature code stream, wherein the feature code stream includes serial numbers of code words obtained by means of the multi-stage vector quantization. A device for compressing a local feature descriptor and a storage medium are also provided.. ... Peking University

01/26/17 / #20170021304

Method for removing sox from gas using ethylene glycol composite solution

A method for removing sox from a gas using an ethylene glycol composite solution is provided. The ethylene glycol composite solution is made by mixing ethylene glycol and/or polyethylene glycol with an organic acid and/or organic acid salt containing no nitrogen atom in a molecule, the ethylene glycol composite solution is brought into contact with the gas containing sox to absorb the sox in the gas, wherein x=2 and/or 3. ... Peking University

01/19/17 / #20170015664

Fused acridine derivative and pharmaceutical composition, preparation method and use thereof

Provided is a fused acridine derivative as formula (i), which has good antitumor activity. In addition, also provided are a process for preparing the derivative, a pharmaceutical composition containing the derivative, and the use thereof.. ... Peking University

01/12/17 / #20170007427

Non-contact capacitive sensing system for robotic lower-limb prosthesis

A non-contact capacitive sensing system for robotic lower-limb prosthesis, comprising a sensing front end, a signal sampling unit and a signal processing unit. The sensing front end is composed of capacitance electrodes inside the prosthetic socket, and the capacitance electrodes locate between the prosthetic socket and the stump sock. ... Peking University








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



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