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375results about How to "Improve download efficiency" patented technology

Method for distributing and encrypting streaming media

The present invention provides a method for distributing and encrypting streaming media, characterized in that: first a DRM encryption is performed on a movie which can be played or downloaded, then a distribution is performed by P2P technology, the movie only can be normally watched when an effective certificate is obtained during the playing, so that the problems of slow play speed, slow download speed and pirate can be solved at the same time. The specific work flow of the method comprises the following steps: (1)a digital program authorization center is established; (2)a digital program is encrypted by using a secret key, and the encrypted information is stored into the head of the digital program; (3)an authentication of the digital program authorization center and a decoding of the secret key are needed to be obtained when the program is requested; (4)users play the digital program by the decoding of the secret key; (5)the downloaded digital program can not be played without the authentication authorization; and (6)users can share the download by means of P2P, or perform a download on the P2P server. The benefits of the present invention is that: the method can ensure application and popularization of the streaming media, effectively solve the copyright protection problem of the video downloads, and has an active effect on protection of media industry.
Owner:SHANGHAI DIANJI UNIV

Method, device and system for sending merchant popularization information to mobile terminal

Provided are a method, device and system for sending merchant popularization information to a mobile terminal. The method includes the steps that communication information and communication reference information are obtained from the mobile terminal, and the communication information is related to at least one merchant object in a database; association class destination data relevant to the communication information are extracted from the merchant objects, the extracted data are compared with the communication information, and merchant objects relevant to the communication information are obtained according to comparison results; screening class destination data are extracted from the merchant popularization information related to the merchant objects and compared with the communication reference information, and the merchant popularization information is selected or sorted according to comparison results; the merchant popularization information is fed back to the mobile terminal. According to the method, the communication information is fully utilized, release accuracy of the merchant popularization information is enhanced, and meanwhile user inquiring and downloading efficiency is improved greatly.
Owner:SHANGHAI CHULE (COOTEK) INFORMATION TECH CO LTD

Program updating downloading method and device

The invention discloses a program updating downloading method and a program updating downloading device, relating to the technical field of a computer. The method comprises the following steps of storing various data used for updating in an executable file data area and storing list file data in a designated bit position or a data segment of the updating data area; receiving a program updating downloading request of a client-side; according to the program updating downloading request, obtaining and further performing comparison on first list file data of an executable file of a server and second list file data of an executable file of the client-side to judge whether the updating data which are not downloaded exist on the client-side; in the case of the existence, extracting the updating data from the executable file data area and further providing the updating data to the client-side for downloading. With the adoption of the program updating downloading method and the program updating downloading device, all the installation program versions are unique, so that the consistency of file versions is fully guaranteed; and therefore, the file quantity is decreased, the efficiency of seeking the files by the server is guaranteed, the downloading efficiency of the service is improved and the disk storage space also can be saved.
Owner:BEIJING QIANXIN TECH

Multi-stage hydraulic expansion tail pipe suspension system with reducing expansion cone for horizontal well for thermal recovery of heavy oil

ActiveCN102996089ASufficient expansion thrustImprove securityBorehole/well accessoriesHydraulic cylinderCoupling
The invention discloses a multi-stage hydraulic expansion tail pipe suspension system with a reducing expansion cone for a horizontal well for thermal recovery of heavy oil. The multi-stage hydraulic expansion tail pipe suspension system comprises a multi-stage hydraulic cylinder power system, the reducing expansion cone, an expansion pipe hanger (27) and a hydraulic-mechanical dual-acting release system and also comprises a multi-stage hydraulic cylinder sleeve (2) and a hollow piston rod (3), the reducing expansion cone comprises an upper claw plate (7), a reducing expansion block (8) and a lower claw plate (9), and the hydraulic-mechanical dual-acting release system comprises a release body (10), a torque sliding sleeve (11), a release coupling (12), a sleeve claw (13), a pin clamping seat (14) and a pressure-keeping ball seat (16). The multi-stage hydraulic expansion tail pipe suspension system has the beneficial effects that since the multi-stage hydraulic cylinder power system is adopted, the safety factor is larger, and the scope of application is wider; since the reducing expansion cone is adopted, the adaptability of the system is improved; and since the hydraulic-mechanical dual-acting release system is adopted, operating risks are reduced, and the stability of the device is improved.
Owner:SOUTHWEST PETROLEUM UNIV

Slurry negative pulse data download coding method for well drilling

The invention belongs to a slurry negative pulse data download coding method for well drilling. Ground analyzing is conducted on a working mode and an underground parameter of an MWD, wherein the working mode and the underground parameter are uploaded through a slurry pulse, the working mode is adjusted according to the design requirement to generate a set of data codes; a slurry negative pulse is downloaded to download the generated data codes to the underground, the slurry negative pulse is downloaded in a three-down three-up mode, five pulse periods are produced by the three-down three-up mode, data are downloaded to an underground device by utilizing the influence of slurry discharging amount on the parameter of the underground device in each period, the underground device acquires and decodes the influenced parameter, and data information is extracted and is used for device control; the underground device sends parameter information and the control state of itself to an MWD4, and the MWD4 uploads the data by controlling the slurry pulse and sends drilling information to the ground. Data download time is saved, and parameter download efficiency is improved, so that the slurry negative pulse data download coding method for well drilling has important significance for improving quality of a drilling track.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1

Program downloading system and method of PCIE/PCIX external plug-in card

The invention discloses a program downloading system and method of a PCIE / PCIX external plug-in card, and belongs to the technical field of a server board card. The system comprises a PCIE / PCIX external plug-in card, a test conversion tool, a program downloading host and a program downloading device, wherein the main controller and a digital power supply device are arranged on the PCIE / PCIX external plug-in card, different kinds of PCIE / PCIX interfaces are correspondingly arranged on the test conversion tool according to differences of the PCIE / PCIX external plug-in card, and in addition, a switch controller is installed; the program downloader is connected with the program downloading host and the test conversion tool; the program downloading host installs the program downloading software; an SMBus switching interface of the switching controller is connected with an SMBus interface formed in a digital power supply chip of the digital power supply device, and the switching controller is in charge of switching the program loading of the PCIE / PCIX external plug-in card. The system and the method have the advantages that the program downloading speed is accelerated, the on-line test process is accelerated, and the production efficiency is improved.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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