39results about How to "Reduce traffic demand" patented technology

Methods, apparatus, media and signals for assigning frequency channels to a beam in a multi-beam cellular communications system are disclosed. One method involves receiving an indication of channel quality representing a channel quality in the second region, of a frequency channel used in the first region to communicate with the source. The method further involves handing off the frequency channel to a transceiver in the second region to cause the transceiver in the second region to use the frequency channel to communicate with the source in the second region, in response to the indication representing at least a pre-determined minimum channel quality.

The invention relates to a video transmission method for a web camera. The video transmission method for the web camera comprises the steps as follows: 1) the web camera establishes connection with a client program through the Internet; 2) a client generates control information according to current manual or automatic operation and transmits the web camera; 3) the web camera processes pictures collected by a sensor according to the received instruction; 4) the web camera performs video streaming coding to a processed image sequence; 5) the web camera embeds the play information based by processing the video streaming in the video streaming and transmits to the client, or transmits to the client with an individual data format via a networking protocol; 6) the client decodes and displays according to the received video streaming and play information; 7) the second step to the sixth step is repeated while the play information of the client is changed. The method of the invention solves the problem of providing the high-quality, high-fluency and high-definition video to a user when the bandwidth is not enough.

Mode of water-cooling for stator is adopted in the invention. Stator frame is modified to cooling structure of four cooling water channels inside four corners formed by rotund inner wall and quadrate outer wall of stator frame so as to form four cooling water channels arranged along four axial directional straight lines. Ribs are formed at thinnest place between rotund inner wall and quadrate outer wall in order to partition four cooling water channels. Through connection holes, the said four cooling water channels are formed a cooling loop in roundabout mode. Besides the said cooling loop in roundabout mode, cooling water channels are prepared on two end plates. Partial water cooling channel on stator frame are connected to cooling water channels on end plates to form two pieces of branched roundabout cooling water loop so as to cool disclosed traction motor.

The invention discloses a file distribution system and a file distribution method based on IPFS, wherein a console is used to be provided to file distribution user for file distribution, a schedule system manages a plurality of area management nodes, and controls the scheduling of file distribution tasks, selectively deliveries the file distribution tasks to the zone management node managed by theschedule system, an area management node is responsible for downloading the files that need to be distributed, uploading to IPFS, addressing of file resources, and distribution of file distribution tasks to some edge nodes in the region. The edge nodes are used for receiving the file distribution tasks from the area management node where the edge nodes are located, downloading files, providing CDN services, and continuing to distribute file distribution tasks in a point-to-point manner. The file distribution system and the file distribution method of the invention combine the comprehensive advantages of the cloud and the edge equipment, and improve the file distribution efficiency through a point-to-point transmission protocol.

The invention discloses a device and method for high-power laser heat management based on spray evaporation. The device for the high-power laser heat management comprises a high-pressure spray chamber arranged on a laser heat sink, a spray nozzle array and an air pressure sensor are arranged in the high-pressure spray chamber, the high-pressure spray chamber is adjacent to a transitional chamber, the transitional chamber is connected with a high-pressure liquid storage tank through a high-pressure electric pump, a spray liquid returning and accumulating area on the bottom portion of the high-pressure spray chamber is connected with the transitional chamber through the high-pressure electric pump, the high-pressure spray chamber is further connected with an exhaust pipe, and a decompression valve is arranged on the exhaust pipe. The method for the high-power laser heat management is achieved through the device for the high-power laser heat management, and the method is used for maintaining the pressure of gas refrigerants in the high-pressure spray chamber to be constant, and therefore temperature is maintained to be constant to achieve constant temperature control over the laser heat sink. The device is simple and reliable in structure, high in compactness, accurate in temperature control and stable in operation, and the method is simple and easy to implement, high in efficiency and environmentally friendly.

The invention discloses a panoramic image-based panoramic video producing method. According to the method, multiple nodes are set, a panoramic image is formed on each node, a camera is set, the cameramoves from one node to another node, the panoramic image on the node rotates by taking the node as the center of a circle, a rotating speed of the panoramic image and a moving speed of the camera areset to be matched with each other, when the camera moves from one node to another node, the panoramic images of the two nodes are spliced, and the camera records to form a video. The method has the advantages of reducing the data amount of the panoramic video greatly while delivering high visual experience, and lowering the costs of content storage and transmission.

The invention provides a vehicle, vehicle-mounted equipment, an OTA file server and an upgrading method of the OTA file server. The vehicle-mounted equipment comprises a vehicle-mounted processor anda wireless communication module, the vehicle-mounted processor inquires OTA upgrade package information corresponding to the upgrade version, and obtains a first downloading path of the split public data and a second downloading path of the difference data, and the wireless communication module is used for downloading the public data from the CDN service network pointed by the first downloading path through the CDN acceleration channel, downloading the difference data through the second downloading path, synthesizing the public data and the difference data by adopting a predetermined algorithmto obtain an OTA upgrade package corresponding to the OTA upgrade package information, and upgrading the OTA upgrade package. According to the application, a CDN acceleration scheme can be supportedtechnically, OTA personalized upgrade package upgrade is supported, the cloud encryption and decryption operation resource overhead is reduced, the network traffic overhead of a user is reduced, and the storage and traffic requirements on the CDN of the cloud can also be reduced.

The invention relates to a main pump pressure control system for a drill jumbo. The system comprises a power source module, an impact pressure section module, an impact pressure reduction module, a main pump pressure control module, a drill arm control guide module, a drill arm action sensing module and a drill arm multiway valve. Compared with the prior art, the main pump pressure control systemfor the drill jumbo has the advantages that the set pressure of a main pump is automatically matched according to the requirement of an execution mechanism, the working pressure of the main pump is increased, the flow requirement of a rock drill is reduced to make the main pump in a high-pressure small-flow state at the same time, and the load of a motor is at a reasonable level.

The invention belongs to the technical field of blast furnace smelting, and relates to a hydraulic clay gun differential control loop and a control method. The control loop comprises a mud beating control loop and a rotation control loop which are independent of each other, an oil inlet P1 of a first reversing valve communicates with an oil supply pipeline P through an oil duct, an oil return opening T1 of the first reversing valve communicates with an oil return pipeline T through an oil duct, and an oil drainage opening Y1 of the first reversing valve communicates with an oil drainage pipeline L through an oil duct; and hydraulic oil output by a first output oil port A1 of the first reversing valve is divided into two paths which respectively communicate with a first working port and a second working port of a clay gun rotating oil cylinder. The rotary control loop cancels the control of a rotary hydraulic lock, the rotary impact is reduced, and the rotary back pressure of the clay gun can be adjusted according to the load; and a differential control loop formed by a second hydraulic control one-way valve, an overflow valve, a first hydraulic control one-way valve, a first throttling valve and a first ball valve is adopted, so that the rotating stop position of the clay gun has good stability, the rotating flow of the clay gun is increased, and the rotating speed is increased.

The invention discloses a sea catching ship catch shelf-type quick-freezing device. The quick-freezing device comprises a shelf frame, a non-freezing liquid inlet main pipe, a non-freezing liquid outlet main pipe and a plurality of hollow quick-freezing flat plates, wherein liquid separating pipes and liquid returning pipes are connected to the two ends of the quick-freezing flat plates, the liquid separating pipes are connected with the non-freezing liquid inlet main pipe, the liquid returning pipes are connected with the non-freezing liquid outlet main pipe, a plurality of partitioning plates are arranged in the quick-freezing flat plates at intervals in the width direction, the partitioning plates partition internal spaces of the quick-freezing flat plates into a plurality of independent non-freezing liquid flow channels, the two ends of the non-freezing liquid flow channels communicate with the liquid separating pipes and the liquid returning pipes through non-freezing liquid inlets and non-freezing liquid outlets correspondingly, a plurality of baffling units are arranged in the non-freezing liquid flow channels at intervals in the length direction of the quick-freezing flat plates, a turbulent flow area is formed in a space between each adjacent baffling units, and at least two turbulent flow balls which are staggered from each other are arranged in each turbulent flow area. The quick-freezing device has the advantages that the structure is compact, the heat transfer coefficient is large, the heat exchange effect is good, the liquid supply flow requirement of a freezing liquid is low, and the freezing and the quick freezing are fast, and the quick-freezing device is very suitable for being applied to a sea catching ship for quick-freezing of catch.

The present disclosure provides an integrated exhaust manifold cooling jacket. A system for an integrated exhaust manifold cylinder head is provided. In one example, an exhaust manifold for a vehicle includes: a plurality of exhaust runners coupling a plurality of cylinder exhaust outlet ports to an exhaust outlet port, the plurality of exhaust runners forming at least a first exhaust passage and a second exhaust passage at the exhaust outlet port; an upper cooling jacket positioned vertically above the first exhaust passage; a lower cooling jacket positioned vertically below the second exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and vertically above the second exhaust passage.