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Video coding control method, video coding device and video codingprogram

ActiveCN102870415ASuppress underflowReduce the likelihood of continuousTelevision systemsDigital video signal modificationComputer architectureImage quality degradation
Disclosed are a video coding control method, video coding device and video coding program that achieve video coding with fewer computations and less image quality degradation than the two-pass coding of the prior art, while minimizing CPB (coded picture buffer) underflow. The video coding control method controls the amount of generated codes and codes an input video signal in such a manner that a virtual buffer in a decoder does not fail. Said video coding control method comprises the following steps with regard to each picture of a coding sequence picture group, which is a collection of pictures that is composed of a prescribed number of pictures that continue in an encoding sequence: a step for performing sequential coding according to prescribed coding parameters; a step for calculating a quantization statistic for the pictures based on quantization parameter information used in the picture coding, for the coding of each picture, and testing whether the quantization statistic exceeds a prescribed threshold value; and a step for changing the coding parameters when the quantization statistic exceeds the prescribed threshold value in such a manner that the amount of codes generated due to coding is reduced, and for recoding pictures using the updated coding parameters, starting from the first picture of the coding sequence picture group during coding.
Owner:NIPPON TELEGRAPH & TELEPHONE CORP

Forming device and forming method for tubular three-dimensional braided composite product

ActiveCN106313584ARealize continuous weavingQuick releaseEngineeringAbnormal shaped
The invention relates to a forming device and a forming method for a tubular three-dimensional braided composite product. The forming device comprises a flexible core mold, an inward-contracting demolding device, a flexible RTM outer mold, a mold curing device and a medium circulation device, wherein the inward-contracting demolding device is arranged between the flexible RTM outer mold and the flexible core mold; the flexible curing device is arranged on the outer side of the flexible RTM outer mold; and the flexible core mold is connected with the medium circulation device. The forming device is applicable to forming of the tubular three-dimensional braided composite product; by adoption of the forming device, a curved tubular three-dimensional braided composite with various uniform interfaces and various irregular variable cross sections can be prepared; meanwhile, after preform fabric is subjected to braided molding, resin RTM impregnation and rapid curing molding can be performed continuously; and besides, the forming device has the function of quickly demolding the tubular three-dimensional braided composite product. Accordingly, the problem that a conventional metal or wood core mold is cumbersome in molding process, single in function and relatively low in production efficiency can be effectively solved.
Owner:SHANDONG UNIV

Respiratory action self-cleaning device of mainframe of desk computer

The invention discloses a respiratory action self-cleaning device of a mainframe of a desk computer. The respiratory action self-cleaning device comprises a first alternative-current servo motor, wherein a first respiration opening is arranged at heat radiation holes in the back side of the mainframe of the desk computer; a second respiration opening is arranged at a heat radiation hole in the side surface of the mainframe of the desk computer; the first alternative-current servo motor drives an air compressor to generate compressed air; a second alternative-current servo motor is adopted to drive a vacuum pump through a coupling to implement a vacuum sucking function; the generated compressed air enters the mainframe of the desk computer through a pulse valve to generate pulse flow and turbulent flow; under the action of a reversing valve, the first respiration opening is in a dust blowing state or a dust sucking state, and the second respiration opening is in a dust sucking state or a dust blowing state, so that the respiration function is achieved; a central controller is used for receiving and processing signals of a photosensitive sensor. Through the adoption of the respiratory action self-cleaning device, a cleaning effect is ensured as functions of turbulent flow and the pulse flow are utilized with the combination of the internal structural characteristics of the desk computer.
Owner:QINGDAO UNIV

Composite amino acid chelated trace element water-soluble fertilizer and preparation method thereof

The invention discloses a composite amino acid chelated trace element water-soluble fertilizer and a preparation method thereof. The fertilizer comprises the following raw materials in parts by weight: 300 to 500 parts of composite amino acid water solution, 30 to 50 parts of potassium selenite, 20 to 30 parts of iron oxide, 10 to 20 parts of zinc oxide, 5 to 15 parts of boric acid, 5 to 10 parts of copper carbonate, 20 to 30 parts of manganese carbonate, 5 to 10 parts of sodium molybdate, and 400 to 800 parts of water. The preparation method comprises the following steps: mixing and heating raw materials, stirring, filtering, cooling, carrying out chelating reactions and composite reactions, concentrating the reaction product, drying, examining, and packaging. The trace component of the fertilizer is synthesized according to the formula; and the trace component can be individually used or compounded with other fertilizers to satisfy the needs of plants. The provided composite amino acid chelated trace element water-soluble fertilizer has the characteristics of instant property, long-lasting fertilizing effect, comprehensive nutrients, stable chelating, strong chelating performance, easy absorption for plants, harmlessness, and uniform release of nutrients.
Owner:SICHUAN BESTLUCK CHEM

Halved belt sorting trolley with liftable conveying surface, halved belt sorting system and sorting method thereof

The invention discloses a halved belt sorting trolley with a liftable conveying surface, a halved belt sorting system and a sorting method thereof. The sorting trolley comprises a chassis, wherein a storage box is arranged on the chassis; a first chain and a second chain which are opposite are rolled in the storage box; the first chain and the second chain are driven by a motor to extend and retract; mutually separated parts of the first chain and the second chain are flexible; mutually engaged parts of the first chain and the second chain define a rigid rod body; the rigid rod body extends tothe outer part of the storage box, and is connected to the bottom of a conveyor; and the conveyor is arranged on a limiting mechanism. The halved belt sorting trolley adopts a special chain, can realize switching needs of a conveying surface of the conveyor at different heights by regulating length of the rigid rod body extending to the outside of the storage box, and creates beneficial conditions for multi-layer grid hole sorting, so that occupied longitudinal space can be effectively reduced by rolling the chains into the storage box under a normal state; and meanwhile, lifting height of the halved belt sorting trolley can be reasonably regulated according to different application occasions.
Owner:SUZHOU GP LOGISTICS SYST
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