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674results about How to "Reduce blocking" patented technology

Hybrid technique for reducing blocking and ringing artifacts in low-bit-rate coding

A power-scalable hybrid technique to reduce blocking and ringing artifacts in low bit-rate block-based video coding is employed in connection with a modified decoder structure. Fast inverse motion compensation is applied directly in the compressed domain, so that the transform (e.g., DCT) coefficients of the current frame can be reconstructed from those of the previous frame. The spatial characteristics of each block is calculated from the DCT coefficients, and each block is classified as either low-activity or high-activity. For each low-activity block, its DC coefficient value and the DC coefficient values of the surrounding eight neighbor blocks are exploited to predict low frequency AC coefficients which reflect the original coefficients before quantization in the encoding stage. The predicted AC coefficients are inserted into the low activity blocks where blocking artifacts are most noticeable. Subject to available resources, this may be followed by spatial domain post-processing, in which two kinds of low-pass filters are adaptively applied, on a block-by-block basis, according to the classification of the particular block. Strong low-pass filtering is applied in low-activity blocks where the blocking artifacts are most noticeable, whereas weak low-pass filtering is applied in high-activity blocks where ringing noise as well as blocking artifacts may exist. In low activity blocks, the blocking artifacts are reduced by one dimensional horizontal and vertical low-pass filters which are selectively applied in either the horizontal and/or vertical direction depending on the locations and absolute values of the predicted AC coefficients. In high activity blocks, de-blocking and de-ringing is conducted by 2- or 3-tap filters, applied horizontally and/or vertically, which makes the architecture simple.
Owner:SEIKO EPSON CORP

Superantibody synthesis and use in detection, prevention and treatment of disease

Superantibodies having enhanced autophilic, catalytic, and/or membrane-penetrating properties are prepared by affinity-based conjugation of a photoactivatable organic molecule to a target immunoglobulin. The photoactivatable organic molecule bears a chromophoric aromatic hydrocarbon moiety, which has affinity for the immunoglobulin. Upon photolysis, the organic molecule is covalently linked to the immunoglobulin. A preferred organic molecule is a peptide and a preferred aromatic hydrocarbon moiety is a tryptophan residue. The photoactivatable organic molecule need not bear a purine, pyrimidine or azido group to effect binding to the immunoglobulin and/or photoactivation. The superantibodies can enhance the potency and expand the targeting range of target antibodies. Autophilic superantibodies can promote apoptosis of target cells and/or enhance therapeutic efficacies in the treatment of patients with diseases or disorders responsive to antibody therapy. Exemplary of such diseases are atherosclerosis and cardiovascular disease. Membrane-penetrating superantibodies can prevent apoptosis by binding to intracellular anti-caspase signal proteins. Compositions containing the superantibodies, as well as methods of making and using them, are disclosed.
Owner:INNEXUS BIOTECHNOLOGY INT LTD

Minisize nuclear battery

The invention discloses a minitype nuclear battery, which mainly solves the problem that the nuclear battery manufacturing is easier than the SiC technology realization. A low doping epitaxial layer (2) and an ohmic contact electrode (3) are respectively arranged at the upper part and the lower part of an N-type high doping SiC substrate (1), wherein, a circular schottky contact layer (4) is deposited on the upper surface of the low doping epitaxial layer (2), and a SiO2 passivating layer (5) and a bonding layer (7) are arranged on the circumference at the outer edge of the schottky contact layer. The schottky contact layer (4) and a schottky contact electrode (6) are formed by adopting an identical technology, that is, a schottky contact hole is etched by adopting wet process in the center position of the SiO2 passivating layer (5), and Ni, Pt or Au with the thickness being 5 to 20 nm deposited on the SiO2 passivating layer on the hole or at the periphery of the hole, and the schottky contact layer (4) and the schottky contact electrode (6) are respectively formed after the SiO2 passivating layer is peeled off. The minitype nuclear battery has the advantages of simple technology and high conversion efficiency, and is applicable in directly converting the nuclear energy radiated by isotopes into the electric energy.
Owner:XIDIAN UNIV

Method for constructing metamorphic rock confined water tunnel

The invention relates to the field of tunnel construction, in particular to a method for constructing a metamorphic rock confined water tunnel, which solves the problems of the current method that geological disaster is easily initiated, the digging outline is difficult to control, timbering at initial stage is easy to transform and craze and the collapse is easy to occur. The method comprises the steps of: preliminarily forecasting surrounding rock level and underground water developing condition, accurately forecasting the geologic condition and the underground water developing condition by an advanced prospect hole, draining and decreasing water pressure by an advanced borehole, fixing the surrounding rock and plugging water by grouting via an advanced ductile, choosing a digging manner of tunnel trunk, determining the timbering form at initial stage, constructing a radial ductile, digging an inverted arch, pouring inverted arch concrete, and constructing a secondary lining. The construction method of the invention can efficiently control the digging outline, decrease the collapse frequency and the scale, efficiently control the transformation and cracking of the timbering at initial stage and can almost avoid the tunnel collapse by secondarily exchanging arch. The cost is decreased and the construction quality and the construction safety are efficiently promoted so as to bring excellent social benefit.
Owner:THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY

Display screen component and electronic equipment

ActiveCN109061922AIncrease the screen ratioMake sure the display functionNon-linear opticsProximity sensorEngineering
The invention provides a display screen component and electronic equipment. The display screen component comprises a cover plate, a backlight module, a proximity sensor module, a first light supplementing element and a second light supplementing element, wherein the cover plate is provided with a light transmitting area; the backlight module and the light transmitting area are oppositely arranged;the backlight module is provided with a first through hole and a second through hole; the proximity sensor module comprises an emitter and a receiver, wherein the emitter and the receiver are independently oppositely arranged with the first through hole and the second through hole; when the emitter emits a detection signal, the detection signal is emitted through the first through hole and is reflected by a main body to be detected to be projected to the receiver through the second through hole to detect an interval between the cover plate and the main body to be detected; the first light supplementing element and the emitter are adjacently arranged; the second light supplementing element and the receiver are adjacently arranged; and when the backlight module emits visible light, visiblelight emitted from the first light supplementing element and the second light supplementing element is independently emitted out of the light transmitting area through the first through hole and the second through hole. By use of the display screen component, the screen-to-body ratio of the display screen component can be improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

LED (Light-Emitting Diode) display screen

The invention relates to the field of LED (Light-Emitting Diode) packaging, in particular to an LED display screen. The LED display screen comprises a lamp panel and LED lamp beads arranged on the lamp panel, wherein light absorption face masks are arranged on the lamp panel and are positioned among the LED lamp beads; the widths of the light absorption face masks are gradually reduced from the ends in contact with the lamp panel to the opposite ends. The light absorption face masks are arranged among the LED lamp beads for absorbing external light, so that external stray light is reduced, and the display contrast ratio is promoted; meanwhile, the structures of the light absorption face masks are improved, so that the widths, at the ends in contact with the lamp panel, of the light absorption face masks are greater than those at the other ends opposite to the ends in contact with the lamp panel, the widths, at the ends far away from the lamp panel, of the light absorption face masks are arranged in a reduced mode, the absorption and blocking of light absorption walls of the light absorption face masks for red, green and blue light rays in the LED lamp beads are reduced, the visual angle of the display screen is enlarged, and the visual color difference is eliminated as much as possible. Meanwhile, the using material of the light absorption face masks is further reduced, and the product cost is reduced.
Owner:GUANGDONG VTRON TECH CO LTD

Vibration-damping, denoising and yaw low-speed braking pad and fabrication method thereof

ActiveCN103256325AStable coefficient of frictionGood high temperature friction performanceFriction liningLow speedCarbon fibers
The invention relates to a braking pad, in particular to a vibration-damping, denoising and yaw low-speed braking pad for a yaw braking device of a wind generating set and a fabrication method of the braking pad. The vibration-damping, denoising and yaw low-speed braking pad comprises a steel backing and an abrasive layer attached to the steel backing, wherein the abrasive layer is fabricated by taking PTS (Phenolic Thermospheres) suspension method phenolic resin as a gluing agent, taking graphite, tin sulfide and copper sulfide as a lubricant, taking antimony trisulfide, zirconium silicate, silicon carbide and silicon dioxide as an abradant, taking potassium titanate whiskers, ceramic fibers, aramid fibers, carbon fibers, steel fibers and copper fibers as reinforced fibers, taking calcium carbonate, mica, vermiculite and foam ferrous powder as an inorganic filler, and taking cashew nut shell oil friction powder and rubber powder as an organic filler according to a wet method pressing technology. The braking pad has the advantages that component percentages of a friction material and a processing technology are reasonable; the braking sensitivity is high; the braking vibration is small; the friction noise is low; and the braking pad is provided with a pad abrasion alarm line.
Owner:JIAOZUO LICHUANG BRAKE

Soft-outside and rigid-inside oil-based drilling fluid nano blocking agent and oil-based drilling fluid

ActiveCN113355061AImprove rheologyGood sealability and other aspects of performanceDrilling compositionMeth-Double bond
The invention discloses a soft-outside and rigid-inside oil-based drilling fluid nano blocking agent and an oil-based drilling fluid, and belongs to the technical field of oil and gas field drilling. The soft-outside and rigid-inside oil-based drilling fluid nano blocking agent is mainly prepared from graphene oxide, a benzene ring-containing monomer, olefin containing carbon-carbon double bonds and sodium methallyl sulfonate as main materials by adopting a continuous emulsion polymerization method; the soft-outside and rigid-inside oil-based drilling fluid nano blocking agent has a plurality of benzene rings and sulfonic acid functional groups, and has good temperature resistance and salt resistance. The synthetic raw materials of the blocking agent are easy to obtain, and the synthetic method is simple and reliable. The particle size of the synthesized soft-outside and rigid-inside oil-based drilling fluid nano blocking agent is 120-330 nm, and nano-sized apertures in a mud shale well wall can be effectively blocked by the synthesized soft-outside and rigid-inside oil-based drilling fluid nano blocking agent. The nano blocking agent can be directly added into the oil-based drilling fluid, is good in compatibility, can effectively prevent the drilling fluid from permeating into a stratum, further stabilizes a well wall and prevents collapse, and has good blocking and filtrate reduction effects.
Owner:SOUTHWEST PETROLEUM UNIV

Orientation jetting and fracturing exploitation method for coal bed gas under coal mine

The invention discloses an orientation jetting and fracturing exploitation method for coal bed gas under a coal mine. The method includes the steps that a drilled hole along a coal bed is formed in a top plate or a bottom plate; a fracturing pipe set and a radial perforator are placed in a first perforation position; the hole is sealed; the fracturing pump set and the perforator are connected with corresponding pump sets respectively, and a jet flow channel is formed by the perforator and used for communicating the coal bed and the drilled hole; annular fracturing liquid is injected into the drilled hole in a pressure mode, and meanwhile annular pressure is kept; the coal bed is continuously jetted for preset time so that cracks can be formed on coal bodies and extend in the bottom direction of jetting holes of the coal bed; jetting and fracturing are stopped at the same time, the perforator is moved to a next jetting position to form the jet flow channel, and then fracturing liquid is pressurize and jetted continuously; the steps of independently jetting a rock stratum and pressurizing and jetting the coal bed are repeatedly executed until jetting and fracturing at all positions in the drilled hole is finished, and then the coal bed gas is extracted. The orientation jetting and fracturing exploitation method has the advantages that the trend and the quantity of the cracks are controllable, exploitation efficiency of the coal bed is high, the gas disaster of the mine can be effectively prevented and treated, and economic and social benefits can be improved.
Owner:重庆市能源投资集团科技有限责任公司
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