87results about How to "Improve buffer efficiency" patented technology

The invention relates to a method for buffering multimedia information, wherein a parameter is defined indicative of the maximum amount of transmission units comprising multimedia data that precede any transmission unit comprising multimedia data in the packet stream in transmission unit transmission order and follow the transmission unit comprising multimedia data in decoding order. The invention also relates to a system, a transmitting device, a receiving device, a computer program product, a signal and a module.

Various embodiments are described of a system and method for improved SCL decoder operation. In particular, various embodiments are described which improve the efficiency of the buffer management based on updated path metric statistics. In some embodiments, the SCL decoder may perform selective replacement to limit the extent of LLR updates per row only to the statistics that have changed since the previous update cycle. In some embodiments, the SCL decoder may perform deferred updates, which may involves in-place calculation of both û_φ=0 and û_φ=1 bit estimate (LLR) updates based on the row from which the updated row will be derived.

The embodiment of the invention provides a multimedia preloading method and device applied to the technical field of the Internet. The method comprises the following steps: acquiring a to-be-played multimedia corresponding to an antecedent multimedia according to an operation state of a user; setting a preloading state of the to-be-played multimedia according to the loading progress of the antecedent multimedia and/or the operation state of the user; preloading the to-be-played multimedia when the preloading state of the to-be-played multimedia is to allow the preloading. When playing the current antecedent multimedia, whether to perform the preloading operation on the to-be-played multimedia is judged through simple judgment logic, the technical effect of loading the possibly required to-be-played multimedia in advance in idle bandwidth is realized, the waiting time of a user for waiting the buffering of the to-be-played multimedia is reduced, the buffering efficiency in idle bandwidth is improved, and the user experience is improved.

An apparatus for aggregating and switching traffic in a broadband subscriber network and methods of processing upstream and downstream traffic are provided. The apparatus includes: an upstream traffic processing unit which stores a plurality of packets received from a plurality of downlinks with respect to each subscriber link, and transmits the packets stored with respect to each subscriber link to uplinks through scheduling; and a downstream traffic processing unit which broadcasts a packet received from the uplinks to the subscriber links via a broadcast bus connected to the respective subscriber links and determines with respect to each subscriber link whether to transmit the packet to subscriber links. It is possible to efficiently aggregate, switch, and broadcast subscriber traffic in a broadband subscriber network in which upstream traffic and downstream traffic are asymmetric.

A small unmanned plane undercarriage buffer relates to the field of aviation aircrafts and solves problems of low buffering efficiency, easy bounce, low reliability of a present flat spring type buffer. The small unmanned plane undercarriage buffer comprises an external cylinder, a first spring on the external cylinder, an internal cylinder having a damping hole, an air sac between the external cylinder and the internal cylinder; an upper joint, a lower joint, a piston rod extending into the internal cylinder, a piston, a damping plate, a pressure-limiting valve, a check valve, a guide sleeve and a locking cover, wherein the piston rod is orderly covered with the piston, the damping plate and the pressure-limiting plate; the piston rod is orderly covered with the check valve, the guide sleeve and the locking cover; the check valve, the guide sleeve and the locking cover are all disposed in the external cylinder; an internal-external cylinder annular oil storage cavity is formed between the internal cylinder and the external cylinder; the damping plate axially moves along the piston rod; the pressure-limiting plate limits maximum damping force to a preset valve during compression stroke; after the locking cover is tightly screwed, the guide sleeve, the check valve and the internal cylinder are axially pressed to the lower joint; the check valve controls communication between the internal-external cylinder annular oil storage cavity and a right cavity of the internal cylinder; and two ends of a first spring are respectively pressed against the upper and lower joints. The small unmanned plane undercarriage buffer possesses high buffering efficiency, uneasy bounce, stable performance and great reliability.

The invention discloses an overload prevention hydraulic balance absorber. The overload prevention hydraulic balance absorber comprises a main cylinder, an auxiliary cylinder arranged inside the main cylinder, a main anti-shock device, an auxiliary anti-shock device and at least two overload prevention devices, wherein the overload prevention devices are symmetrically, evenly and fixedly arranged on the outer side of the main cylinder. The overload prevention hydraulic balance absorber aims at achieving the technical purpose of avoiding the occurrence that when an automobile with the absorber is driven on a rugged road section, the absorber is damaged due to overload. By means of the overload prevention hydraulic balance absorber, the shock explosion characteristic of kazoe in a shock bag in each overload prevention device is utilized, so that when the absorber is shocked by overload, the kazoe is shocked to release gas to buffer the overload pressure shock, the occurrence that the absorber is shocked by the overload or even damaged is avoided, the safety of the absorber is protected, the probability of damage of the absorber is reduced, the using safety of the absorber is improved, and the service life of the absorber is prolonged.

The invention relates to an undercarriage buffer which can exert a good buffering function in take-off, landing and sliding processes of an airplane. The undercarriage buffer comprises an outer cylinder 1, a fuel injection inflation valve 2, an inner cylinder 3, a fuel needle 4, a damping device 5 and a supporting ring 6, wherein the damping device 5 comprises a supporting piece 14, a connecting piece 15, a valve 16, a throttling valve 17, a return spring 18, a locking washer 19 and a piston ring 20, wherein the connecting piece 15 is fixed on the fuel needle 4 by threads at the upper part of the connecting piece 15; the throttling valve 17 is connectedwith the lower end of the connecting piece 15 by the threads; the supporting piece 14 is fixed at the lower end of the fuel needle 4; the locking washer 19 is used for the fixing between the supporting piece 14 and the connecting piece 15; the return spring 18 is mounted between the supporting piece 14 and the valve 16, and used for the return of the valve 16; four small holes are formed in the connecting piece 15 and act as damping holes during a forward stroke of the buffer; and four small holes are formed in the throttling valve 17, and act as damping holes during a reversal stroke of the buffer.

The invention discloses a damping type meal delivery robot stable in walking. The damping type meal delivery robot stable in walking comprises a walking part, a machine body, a visual integration areaand a supporting plate, the walking part is internally provided with a bottom fixing rod, a fixing support and a middle fixing rod, a buffer part is fixedly arranged in the middle of the middle fixing rod, a vibration absorption barrel fixing plate is fixedly installed at the bottom of the buffer part, and a vibration absorption barrel lower part, a vibration absorption barrel upper part and a spring are arranged inside the buffer part; and the tail ends of force arms are rotationally installed on the outer sides of second rotating shafts, and a tray bottom fixing plate is arranged at the lower end of the supporting plate. According to the damping type meal delivery robot stable in walking, the walking part adopts crawler-type design, so that the walking stability can be better guaranteedcompared with a common walking structure; vibration is absorbed through hydraulic damping of the vibration absorption barrel lower part and hydraulic damping of the vibration absorption barrel upperpart, and the stability is improved; and the design of sliding rails, spring mounting seats and tray springs is achieved, so that the stability of the sliding rails is improved again, the stability ofthe surfaces of the sliding rails is greatly improved under the cooperation of buffering and vibration absorption of the buffer part, and then the requirement for the stability of the meal delivery robot is met.

The invention discloses a buffer device of a textile machine. The buffer device comprises a top plate, an upper supporting plate, a lower supporting plate and a bottom plate. Top plate spring fixing rods are fixedly welded to the lower side of the top plate. The upper supporting plate is arranged on the lower side of the top plate. Upper supporting plate spring fixing rods are fixedly welded to the upper end of the upper supporting plate. First first-stage springs are fixedly installed between the top plate spring fixing rods and the upper supporting plate spring fixing rods. The lower supporting plate is fixedly connected to the lower side of the upper supporting plate through second-stage springs. Second first-stage springs are fixedly arranged on the lower side of the lower supporting plate. First telescopic rods are arranged on the upper side of the bottom plate. Second telescopic rods are inserted into the upper sides of the first telescopic rods. The second telescopic rods and the first telescopic rods are stainless steel cylinders, and the upper ends of the first telescopic rods are hollow. The buffer device of the textile machine is simple in structure, convenient to use and practical and can achieve the buffer function effectively, meet different requirements and reduce noise pollution.

The present invention discloses a wireless multicasting acting method in hybrid network living broadcast system, whose step is: (1) node added into multicasting address of frequency channel, acting heartbeat bag is initialized as multicasting acting if wireless multicasting is not received, otherwise new multicasting acting is decided by competition. (2) wireless multicasting acting, broadcast source and wire node are transmitted interactive, received buffering data multicast to common wireless node of the present wireless network, and responses its data request; (3) common wireless node initializes buffer zone according to heartbeat bag generated by multicasting acting, and requests data to acting according to buffer zone filling situation. (4) if common wireless node roam into new network which has multicasting acting, service can also be accepted, otherwise node-self becomes to multicasting acting. (5) if wireless multicasting acting roams out of original network, all of common wireless node in original network competes new multicasting acting, if new network has multicasting acting, new multicasting acting is decided by competition, otherwise multicasting acting is maintained.

The invention belongs to the technical field of tempered glass, and particularly relates to composite tempered glass. The composite tempered glass comprises inner-layer glass, outer-layer glass, interlayer sheets and a buffer module; the buffer module is arranged between the inner-layer glass and the outer-layer glass, and the interlayer sheets are arranged on the sides, adjacent to each other, ofthe inner-layer glass and the outer-layer glass correspondingly; the buffer module comprises buffer ellipsoids and buffer balls; the buffer ellipsoids and the buffer balls are arranged on the sides,adjacent to each other, of the inner-layer glass and the outer-layer glass at intervals correspondingly, the middles of the buffer ellipsoids on the inner-layer glass correspond to the buffer balls onthe outer-layer glass, and the middles of the buffer ellipsoids on the outer-layer glass correspond to the buffer balls on the inner-layer glass; lantern rings are arranged on the contact parts of the buffer ellipsoids and the buffer balls; and the buffer balls are formed by hard sections and soft sections which are combined. The buffer efficiency of the inner-layer glass and the outer-layer glass can be improved, broken inner-layer glass and outer-layer glass are adsorbed, thus the broken glass is prevented from falling off, and thus the safety factor is increased.

The invention discloses a retention-type rear cover separation device capable of braking and buffering based on large-impulse collision and belongs to the technical field of missile fire. The retention-type rear cover separation device comprises an accommodating housing, a metal shearing piece group, a positioning block, a force transfer seat and limited posts, wherein a rear cover is mounted on the outer circumferential surface of a missile body; the missile body and the rear cover are mounted in a launch canister; a vertical part on one side of the force transfer seat is opposite to the rearcover, and a horizontal part on the other side of the force transfer seat is opposite to long metal sheets of the metal shearing piece group; the positioning block is mounted on the upper surface ofthe horizontal part of the force transfer seat; one ends of two or more limited posts are mounted in the positioning block, and the other ends of the two or more limited posts penetrate through holesof the metal shearing piece group; and the accommodating housing is a housing with two side surface openings and an end surface opening, and is fixedly connected with the launch canister after being mounted on the positioning block and the metal shearing piece group in a buckling manner. The retention-type rear cover separation device is simple in principle and compact in structure, and can quickly, safely and reliably separate the missile body from the rear cover.

The invention belongs to the technical field of plastic sheets, specifically to an auto lined light plastic sheet, comprising a plate, a cavity, rebounding modules and a buffering modules; a pluralityof the rebounding modules are arranged on the plate, and the cavity is formed on the inside of the plate, and the buffering modules are arranged between two adjacent rebounding modules on the insideof the cavity; the rebounding modules comprise a first elastic plate group, a second elastic plate group, a extrusion spring and a rebounding unit; one end of the first elastic plate group is fixedlyconnected with the inner wall, located above the cavity, of the plate; the second elastic plate group is fixedly connected with the other end of the first elastic plate group; the rebounding unit is arranged inside the second elastic plate group; the buffering modules comprise flat wire springs, a rectangular sleeve and a block, the buffering modules are composed of a plurality of flat wire springs splicing together with each other, and the flat wire springs at the two ends of the buffering modules are respectively connected with an adjacent first elastic plate group. The invention may improvethe buffering efficiency of the plate and extend the service life of the plate.

The invention provides an electromagnetic buffering unit of a casting device. The electromagnetic buffering unit comprises a buffering plate, conductor buffering guide rails, a buffering module, a detection module, guide rail outer shells, an insulation structure, a control module and a storage battery precharging the control module. One end of the buffering plate is connected to the rear end of the casting device, and the other end of the buffering plate is arranged in the buffering guide rails and provided with the buffering module. The two sides of the buffering plate are embedded into grooves of the guide rail outer shells and move relative to the buffering guide rails. The insulation structure is located between the conductor buffering guide rails and the guide rail shells. The detection module is used for sending a trigger signal to the control module when detecting that the buffering plate is at a movement state. The control module is used for receiving the triggering signal sent by the control module and controlling a closed loop composed of the buffering module and the conductor buffering guide rails. The buffering module is used for generating ampere force opposite to the movement direction of the buffering plate in the closed loop. By adoption of the electromagnetic buffering unit, buffering efficiency of the recoil force of the casting device is improved.

The invention discloses a damping mechanism for concrete processing equipment. The damping mechanism comprises a base and a bottom base, the upper end of the base and the lower end of the bottom baseare each fixedly connected with a steel plate, rubber pads are fixedly connected between the corresponding steel plates, the lower ends of supporting columns penetrate through second sliding plates and are slidingly connected inside fixed columns, the lower ends of the supporting columns are fixedly connected with the inner bottoms of the fixed columns through metal elastic sheets, the supportingcolumns are slidingly sleeved with first sliding plates, and the first sliding plates are fixedly connected with the second sliding plates through rubber cylinders. According to the device, vibrationstress generated when the concrete processing equipment works can be sequentially shared and absorbed, multiple damping protection effects are achieved, the buffering efficiency is greatly enhanced, the service life of the concrete processing equipment is prolonged, the working efficiency is improved, the service life of the equipment is prolonged, and the using cost is saved.

The invention discloses a pneumatic buffering device and a control method. The pneumatic buffering device comprises a cylinder, a supporting base and a control device, wherein the cylinder comprises acylinder body and a piston rod; the supporting base is arranged on the side corresponding to the first end of the cylinder body, and the first end of the cylinder body is provided with a rod cavity of the cylinder body; the supporting base is provided with a supporting hole, and the supporting hole and the piston rod are coaxially arranged; the piston rod is partially arranged in the supporting hole and is in sliding connection with the supporting hole; the control device is used for detecting the air pressure intensity of the cylinder body and the position information of the piston rod, andadjusting the moving direction and the moving speed of movement of the piston rod along the supporting hole according to the air pressure intensity and the position information. Due to the pneumatic buffering device and the control method, the pneumatic buffering device can bear the bending torque, the moving speed of the piston rod can be adjusted according to different kinetic energy of materials, so that the pneumatic buffering device adapts to materials in different sizes, at different falling points and with different kinetic energy, and the overall efficiency of the pneumatic buffering device is improved.