32results about How to "Avoid doubling" patented technology

In a self-operated karaoke recording booth a user is provided with a selection of background scenes from which to choose and also with the option of having the lyrics of the karaoke selection displayed or suppressed. A video camera positioned at the user's eye level is located on the nonreflective side of a one-way mirror and is directed at a specified performer location through the one-way mirror, which is inclined at a forty-five degree angle relative thereto. Messages and video displays are provided to the user by a video display monitor connected to a computer that faces the reflective side of the one-way mirror and is also located at a forty-five degree angle relative thereto. The system is designed to maintain the visual focus of the performer directly into the lens of the video camera throughout the performance and to combine the video camera images with the background scene in such a way as to avoid a double exposure or phantom image of the performer against the background. The performer can choose to have the lyrics of the selected karaoke composition displayed or suppressed. If the election is for a display, the lyrics are displayed at the center of the viewing screen, directly in line with the video camera.

Disclosed are various embodiments of circuitry for coupling first and second transceivers of a dual band radio telephone to integral and external antennas. The circuitry uses impedance matching lengths of transmission lines and switches arranged to provide a minimum insertion loss. Also disclosed is an embodiment for use with a single band radio telephone, such as a digital TDMA radio telephone that either transmits or receives at any given time. Also disclosed is an antenna switching arrangement for a dual band phone that eliminates a requirement for duplexers.

In a method of generating motion blur in a 3D-graphics system, geometrical information (GI) defining a shape of a graphics primitive (GP) is received (RSS; RTS) from a 3D-application. A displacement vector (SDV; TDV) defining a direction of motion of the graphics primitive (GP) is also received from the 3D-application or is determined from the geometrical information. The graphics primitive (GP) is sampled (RSS; RTS) in the direction indicated by the displacement vector to obtain input samples (RPi), and an one dimensional spatial filtering (ODF) is performed on the input samples (RPi) to obtain temporal prefiltering.

The present invention refers to an apparatus for providing at least one joint outgoing IP data stream, the apparatus comprises: (a) at least one receiver adapted to receive a stream of digital TV data, the stream simultaneously containing digital data of a plurality of TV channels, (b) at least one transceiver adapted to receive a downlink stream of IP data and to transmit an uplink stream of IP data via a satellite link, (c) at least one processing unit adapted to convert the digital TV data received from the receiver into a first outgoing IP data stream and to convert the IP data received from the transceiver into a second outgoing IP data stream, and (d) at least one switching unit adapted to combine the first outgoing IP data stream and the second outgoing IP data stream in at least one joint outgoing IP data stream.

The invention provides a method using air curing to prepare low-oxygen-content continuous SiC fibers. The method has the advantages that low-temperature air curing and heat crosslinking are used in a combined manner, the heat crosslinking is added after the air curing as compared with a traditional preparation method, the problem of excessively high fiber oxygen content caused by traditional preparation method merely increasing the air curing temperature is avoided, the problem of fiber doubling caused by the direct high-temperature pyrolysis after the low-temperature air curing is also avoided, and the continuous SiC fibers with oxygen content below 10wt% and good performance are prepared.

The invention provides a preparation method of a high modulus polyethylene fiber. The preparation method is characterized by mixing and swelling 5-10 parts by mass of ultra-high molecular weight polyethylene, 0.5-5 parts by mass of low density polyethylene, 0.01-0.04 part by mass of spinning aid and 100 parts by mass of organic solvent; after a formed polyethylene organic solution is fully dissolved by a double-screw extruder, enabling a gel fiber extruded by a spinneret plate to enter a flash evaporation heating zone heated by water vapor, and carrying out quick flash evaporation on the organic solvent in the gel fiber to form a solid protofilament; after shock cooling of the solid protofilament in a water bath, carrying out hot stretching by heating with water vapor more than 60 times, thus preparing the high modulus polyethylene fiber in a fibrillated net structure. The preparation method has the beneficial effects that a proper amount of low density polyethylene is added, the solid protofilament is subjected to shock cooling in the water bath, and meanwhile, the water vapor is used as a heating and protecting medium to shorten the preparation cycle, thus reducing the production cost and improving the fiber quality.

The invention discloses a silicon-free oiling agent for carbon fiber precursor. The silicon-free oiling agent comprises an aqueous emulsion prepared by dispersing aromatic ester compounds, aromatic polyoxyethylene ether and amine compounds, by the mass ratio of (50-80):(10-35):(1-5), in water; the aromatic ester compounds include one or more of benzene tricarboxylic acid esters, benzene dioctyl phthalate esters, hydroxy-benzoate esters and bisphenol ethoxide high-grade fatty acid esters; aromatic polyoxyethylene ether includes one or more of alkylphenol polyoxyethylene and bisphenol-A polyoxyethylene ether; the amine compounds include one or more of lauramide ethoxide, aliphatic long-chain quaternary ammonium; the survival rate of mass of the aromatic ester compounds is 80-98% at the temperature of 300 DEG C in the atmosphere of air, and the mass ratio of the aromatic ester compounds in involatile components of the oiling agent is 50-80%. Roll banding degree of the precursor in production can be reduced effectively, doubling and adhering of PAN filaments in the pre-oxidation process can be avoided, and the silicon-free oiling agent has certain hydrophilicity and heat resistance.

The invention relates to the technical field of spinning oil agents, in particular to a PAN-based carbon fiber precursor oil agent and a preparation method thereof. The PAN-based carbon fiber precursor oiling agent is prepared from the following components in percentage by mass of 5%-50% of amino and epoxy group modified organic silicon emulsion, 5%-35% of polyether modified organic silicon emulsion, 0.5%-10% of quaternary ammonium salt, 0.1%-5% of a wetting agent and deionized water. During preparation, the amino and epoxy group modified organic silicon emulsion and the polyether modified organic silicon emulsion are added into a variable-speed mixer according to the proportion and stirred uniformly, then the quaternary ammonium salt is added according to the proportion and stirred, finally the wetting agent and the deionized water are slowly added according to the proportion, and the materials are stirred uniformly and sub-packaged. The PAN-based carbon fiber precursor oiling agent is good in quality stability and heat resistance, adhesion and doubling of PAN precursors in the pre-oxidation process can be effectively prevented, pore defects in the high-temperature carbonization process are reduced, and the amount of broken filaments is reduced.

A printing unit of a printing press, such as a web press constructed as a periodical printing press, having at least one printing couple, wherein the printing couple or each printing couple comprises a form cylinder, a transfer cylinder, an inking unit, and preferably a dampening unit. A drive motor is associated with at least one printing couple, and drives the form cylinder or the transfer cylinder of a respective printing couple. In accordance with the invention, a flywheel mass is associated with at least one drive motor which drives the form cylinder or the transfer cylinder of the respective printing couple, where the flywheel mass is connected to the rotor of the respective drive motor in a torsionally rigid manner.

With the present invention, it is possible to provide an image processing apparatus capable of reliably removing noise, even for a live image having a poor S/N ratio. The present invention has a configuration to search for where, on a frame F0, a target block BT is reflected. When superimposing the frame F0 and a frame F1, the target block BT, which is a fragment of the frame F0, and a plurality of blocks to be superimposed, which is a fragment of the frame F1 are set, and if, from fusion blocks BF generated by superimposing the target block BT on each of the blocks to be superimposed BR, a selection block BS is selected wherein superimposed subject images most reinforce one another, it is possible to reliably suppress duplication of the subject images.

The invention belongs to the field of steel wire production and particularly relates to an electric steel wire separating device.The electric steel wire separating device comprises a rack, a driving mechanism, a wire guiding mechanism and a wire separating mechanism, wherein the wire guiding mechanism and the wire separating mechanism are respectively arranged on the rack, the driving mechanism drives the wire guiding mechanism to move along the rack, the wire separating mechanism is installed on the wire guiding mechanism and comprises wire separating plates, and wire separating holes staggered vertically are distributed in the wire separating plates.The wire separating holes formed in the wire separating plates can separate steel wires staggered vertically and horizontally, multi-layer wire separation is achieved, the heating efficiency is improved, energy is saved, and the electric steel wire separating device is simple, easy to operate, convenient to popularize and apply and has a higher practical value.

The invention relates to a low-ash polyacrylonitrile-based fiber, a polyacrylonitrile-based carbon fiber and a preparation method thereof. The invention adopts the technical scheme that the preparation method of the low-ash polyacrylonitrile-based fiber comprises the following steps of oiling a fiber to be oiled to obtain an oiled fiber, wherein the swelling capacity of the fiber to be oiled is less than or equal to 80 percent, an oil agent used for oiling is prepared from crude oil and water, the concentration of the oil agent is smaller than or equal to 5 percent, a pH value of the crude oil is alkaline, the surface tension is smaller than or equal to 35 mN/m, the particle size is 200 to 400 nm, the antioxidant residue mass fraction in the air atmosphere is smaller than or equal to 10 percent, and the heat-resistant residue mass fraction in the nitrogen atmosphere is smaller than or equal to 10 percent; and carrying out drying densification treatment, steam drafting treatment and relaxation heat setting treatment on the oiled fiber to obtain the polyacrylonitrile-based fiber. According to the low-ash polyacrylonitrile-based carbon fiber, the ash content is less than or equal to 0.2 percent. According to the low-ash polyacrylonitrile-based fiber, the polyacrylonitrile-based carbon fiber and the preparation method thereof provided by the invention, the ash content of the polyacrylonitrile-based fiber and the polyacrylonitrile-based carbon fiber is mainly reduced, and broken filaments, fractured filaments, sticky filaments and doubled filaments are avoided.

The invention discloses a method for preparing cellulose fiber tow, comprising: (1) mixing cellulose with an organic solvent to obtain a cellulose spinning solution; (2) extruding the cellulose spinning solution through a spinneret out, through the air gap layer, into the coagulation bath of the wide funnel, and solidify and draw in the accelerating fluid to obtain cellulose fiber tow; wherein, the length of the wide funnel in the horizontal direction is 300-2000mm. The invention utilizes a wide-width funnel to prepare Lyocell tow, and a plurality of monofilaments pass through the wide-width funnel to form a curtain, and the monofilaments are arranged in parallel without entanglement. The tow prepared by the invention has good mechanical properties and more excellent appearance, and can be used for wide-width and high-yield spinning to improve production capacity; in addition, it can also be used to prepare long-tow nonwoven materials.

The invention belongs to the technical field of construction equipment, and discloses an impeller feeder for a measuring bucket. The impeller feeder comprises a blade disk, and the blade disk comprises an inner ring, an outer ring and a blade grid ring arranged between the inner ring and the outer ring; the height of the inner ring is higher than the height of the outer ring; the outer ring is fixedly connected with a discharge port at the lower end of the measuring bucket; the inner ring is internally provided with a transmission shaft, and the two ends, located at the inner ring, of the transmission shaft are rotationally connected with the inner ring through a first bearing and a second bearing; the top of the blade disk is provided with an upper rotating baffle, the bottom of the bladedisk is provided with a lower rotating baffle, the upper rotating baffle and the lower rotating baffle are fixedly mounted on the transmission shaft, and opening holes are formed in the positions, corresponding to the blade grid ring, of the upper rotating baffle and the lower rotating baffle in a staggered manner. By means of the impeller feeder, the multiple bearings are arranged in the inner ring, multiplied changes of gaps between the upper and lower rotating baffles and the blade disk after stress due to bearing oil gaps can be effectively avoided, and the flow control accuracy of the impeller feeder is improved.