43results about How to "Stable and high quality" patented technology

A system and process for controlling the coding bit rate of streaming media data is presented. This coding bit rate control involves dynamically adjusting the coding bit rate to control client buffer duration to prevent the buffer from underflowing, while keeping the average coding bit rate close to the average transmission bit rate of the network (an thus maximizing the quality of the data playback). Using the theory of optimal linear quadratic control, the client buffer duration is kept as close as possible to a target level while still keeping the coding bit rate (and hence the quality) as constant as possible. In addition, a leaky bucket model is incorporated into the control loop so that the changes in buffer duration due to natural variation in the instantaneous coding bit rate are not mistaken for changes in buffer duration due to network congestion.

A system and process for controlling the coding bit rate of streaming media data is presented where a server streams data that exhibits one of a number of coding bit rates supported by the server. Initially, the server chooses the coding bit rate. However, after this startup period, the client provides coding bit rate requests. The server transmits the streaming media data at the most appropriate supported coding bit rate closest to the rate requested. The coding bit rates requested are those estimated to provide a high quality playback of the streaming data while still keeping a decoder buffer of the client filled to a desired level. A leaky bucket model is incorporated so that the changes in buffer duration due to natural variation in the instantaneous coding bit rate are not mistaken for changes in buffer duration due to network congestion.

A system and process for performing an exponentially weighted moving average on streaming data to establish a moving average bit rate of data units is presented. In general, the system or process computes, on a unit-by-unit basis, the product of the moving average bit rate computed for a data unit immediately prior to a unit under consideration and a first fractional weighting factor, added to the product of the instantaneous bit rate of the data unit under consideration and a second fractional weighting factor, wherein at least one fractional weighting factor is not a constant but instead based on the time between data units.

New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excellent in fastness to light, gas, water and so on.

A spray gun with pressure display for applying paint onto a painted object by atomizing the paint with compressed air. A pressure indicating device includes a digitally displayed pressure sensor (25), a pressure transducer part (24), and a display part (27) unitized with each other. The pressure indicating device is detachably installed on a spray gun body, and adapters (21, 22) without a pressure indication function are detachably fitted to the spray gun body according to the shape of the body grip part so that the presence or absence of the pressure indication function can be selected before use. The spray gun can be used under controlled conditions by allowing a worker to detect an air pressure at hand during spraying operation since the spraying air pressure largely affects paint finish as well as dispersion of atomized paint.

A method for two time-scales video stream transmission control is proposed, which mainly includes the following three steps. Firstly, a model-based long time-scale bandwidth trend extraction step is proposed to calculate a current bandwidth through a Transmission Control Protocol (TCP) throughput model, and predict a trend of network bandwidth by using an Exponential Smooth Model (ESM) according to the calculated current bandwidth. Secondly, a short time-scale bandwidth fluctuation detection step is proposed to divide a network status into three categories and according to different network statuses, additively increase or multiplicatively decrease the estimated bandwidth. Thirdly, a target bit rate adjustment step based on two asymmetrical thresholds is proposed to set an up-threshold and a down-threshold of bandwidth to avoid frequently adjusting a target bit rate of an encoder. The method can satisfy the requirements of TCP-friendliness, real-time, and smoothness for the video transmission.

In a water base ink set for ink-jet recording including a pigment-based black ink and a dye-based yellow ink, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105° is used, as the dye used in the yellow ink, together with a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°; or 30° to 70°; or 0° to 30° or 350° to 360°. When the ink set is applied to a general ink-jet printer with a simple maintenance system, the coagulation of black pigment in the printer and the blurring or bleeding on the printing paper are prevented, thereby realizing a satisfactory and complex coloring of the dye-based yellow ink.

In a water base ink set for ink-jet recording including a pigment-based black ink and a dye-based yellow ink, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105° is used, as the dye used in the yellow ink, together with a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°; or 30° to 70°; or 0° to 30° or 350° to 360°. When the ink set is applied to a general ink-jet printer with a simple maintenance system, the coagulation of black pigment in the printer and the blurring or bleeding on the printing paper are prevented, thereby realizing a satisfactory and complex coloring of the dye-based yellow ink.

The invention relates to a multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing the diameter of a female film, which belongs to the technical field of the extrusion film-blowing equipment for production of multi-layer plastic films. The multi-layer co-extrusion film-blowing die head comprises a die body which consists of a multi-layer die head and a finish die, a core rod, a finish die core rod, a flow channel in the die head and an air inlet / exhaust duct, and is characterized in that the die body is provided with an infrared probe facing a female film for detection and an infrared reflecting mirror used for receiving and reflecting infrared rays, the infrared probe is connected with an electromagnetic valve, the electromagnetic valve is connected with an air pump and an air pipe, the air inlet / exhaust duct is connected with the air pipe and an exhaust pipe; the inner wall of the finish die is of a trumpet shape with a smaller upper diameter and a larger lower diameter, and the outer wall of the finish die core rod matched with the finish die is of a trumpet shape with a smaller upper diameter and a larger lower diameter. The invention can automatically adjust, control and stabilize the diameter of the female film, thereby completely preventing the phenomenon of breakage in the secondary expansion of the female film. The diameter of the die head can be reduced significantly, thereby reducing the manufacturing cost; the heat dissipation is reduced, thereby saving the energy, and the roundness of the finish die can be adjusted rapidly and conveniently.

There is provided a piezoelectric ceramic having a high and stable piezoelectric constant and a high and stable mechanical quality factor in a wide operating temperature range, and a piezoelectric element according to the present invention includes a main component containing a perovskite type metal oxide having the following general formula (1) or (2); and Mn as a first auxiliary component,(Ba1-xCax)a(Ti1-y-zSnyZrz)O3  (1)(0.08≦x≦0.20, 0.01≦y≦0.04, 0<z≦0.04)(Ba1-xCax)a(Ti1-ySny)O3  (2)(0.08≦x≦0.20, 0.01≦y≦0.04)wherein the amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, and the value a of the general formula (1) or (2) is in the range of 0.9925+b≦a≦1.0025+b.

An electrophotographic image forming apparatus includes a developing device including a developer reservoir for accommodating a mixed developer. The mixed developer includes a plurality of types of toner having a generally identical hue and different reflection densities. The apparatus also includes a replenishment device having a plurality of toner containers each accommodating one of the plurality of types of toner for replenishing the plurality of types of toner to the developer reservoir; a first detector for detecting whether each of the toner containers is completely empty of toner; and a second detector for detecting whether the developer reservoir is nearly or completely empty of mixed developer. A controller controls the replenishment device and allows or prohibits a printing operation based on the detection result of the first and the second detectors.

An injection device, which comprises a nozzle and which is used for an underground coal gasification process; the nozzle and the injection device are used for continuously injecting a high-concentration oxidant into an underground coal layer during the underground coal gasification process, in which case the high-concentration oxidant may be used safely and steadily to obtain a high-quality and stable product gas, while a retraction cycle and / or a retraction distance of a retraction method in the existing technology may be greatly shortened, thus achieving the continuous and steady operation of the underground coal gasification process. Also disclosed is a method for operating the injection device.

A panoramic image acquisition device includes: fish-eye lens modules, an image sensor and a signal cable, wherein: there are two sets of the fish-eye lens modules, and optic axes thereof coincide with each other; the fish-eye lens modules are arranged at two ends of the optic axes; a prism is provided at a center of a line connecting two optic center of the fish-eye lens modules; and the image sensor is provided below the prism for acquiring images of the fish-eye lens modules. The panoramic image acquisition device of the present invention achieves complete image quality unification and full image synchronization of different view fields in a panoramic image. Meanwhile, the panoramic image acquisition device has only one channel of video output, which greatly simplifies data acquisition tasks and panorama stitching tasks of panoramic image post-treatment, so as to reduce difficulty and costs.

An image-forming apparatus for forming an image on a recording medium includes an image carrier for carrying a toner image corresponding to an image to be formed on the recording medium, a cleaning device including a cleaning member for cleaning the image carrier by removing residual toner remaining on an image-carrying face, and a bias-applying unit for applying a first bias for removing residual toner charged to a first polarity by electrostatic force from the image carrier such that the cleaning member captures residual toner, and expelling the residual toner charged to a second polarity, which is an opposite polarity to the first polarity, by electrostatic force from the cleaning member toward the image carrier, between the image carrier and the cleaning member.

The invention relates to a hoe production method, includes the following steps of: S1, feeding a blank iron bar for producing a hoe into an internal furnace for quenching, taking out the quenched iron bar and placing the iron bar on a graphite roll; S2, axially extending the naturally cooled iron bar through a rolling mill for forming, and feeding the extended blank iron sheet into a guillotine shear and obtaining an iron block after cutting; S3, placing the iron block into an electrical heating high-frequency furnace for heating until the iron block is heated to 800-1100 degrees, and then grinding the iron block through the rolling mill to form a square iron sheet with a thick end and a thin end; S4, making the square iron sheet into an arc-shaped iron sheet through stamping and blanking; S5, conducting final forming, and punching an reinforced rib and a hole in the arc-shaped edge to obtain a hoe plate; and S6, penetrating a hoe handle sleeve into the round hole of the hoe plate and welding the round hole position to obtain the hoe. Compared with the prior art, the hoe production method is simple in process, convenient to operate and high in the degree of mechanization, and the product is large in size and high in quality.

An image forming apparatus has: a housing; a member to be cooled provided inside the housing, the member to be cooled in which heat builds up; an airflow producing portion provided in a predetermined position of the housing for taking in air outside the housing; an air guide member for passing the air thus taken in through a hollow cross-section part, and guiding the air to the member to be cooled to cool the member to be cooled; an air inlet portion provided at one end of the air guide member for taking in the air from the airflow producing portion; and an air blowoff portion provided at another end of the air guide member for sending the air to the member to be cooled, the air blowoff portion in which the cross-sectional area of the hollow cross-section part is smaller than the cross-sectional area of the hollow cross-section part in the air inlet portion.

A piezoelectric ceramic contains a main component, Mn as a first auxiliary component, and a second auxiliary component containing at least one element selected from the group consisting of Cu, B, and Si. The main component contains a perovskite metal oxide having the following general formula (1):(Ba1-xCax)a(Ti1-yZry)O3(0.100≦x≦0.145,0.010≦y≦0.039)  (1)The amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, the second auxiliary component content on a metal basis is 0.001 parts by weight or more and 4.000 parts by weight or less per 100 parts by weight of the metal oxide, and the value a of the general formula (1) is in the range of 0.9925+b≦a≦1.0025+b.