971results about How to "Reduce transfer volume" patented technology

Embodiments of the present disclosure disclose a data synchronization method, system and apparatuses thereof. The data synchronization method includes the following processes: sending, by a client, a data characteristic verification message carrying one or multiple data characteristics for data in a client database, to a server; comparing, by the server, the one or multiple data characteristics carried in the data characteristic verification message with the data characteristics for the data in a server database; determining, by the server, the data to be synchronized based on a result of the comparing and sending the client a data characteristic verification response carrying information indicating the determined data to be synchronized; and determining, by the client, the data to be synchronized according to the information in the data characteristic verification response, and synchronizing the determined data to be synchronized with the server. The method, system and apparatus thereof provided by the embodiments of the present disclosure can reduce the amount of data to be transmitted in data synchronization, and improve the efficiency of data synchronization.

A power meter reader system for automatically reading an indication on a power meter unit having a cyclical property that varies at a rate indicative of power consumption. The system comprises a detection unit that includes a sensor unit for monitoring the cyclical property of the indication and generating a consumption detection signal, a processing unit for generating an information signal based on data related to the consumption detection signal, and a transmitter for transmitting a transmission signal based on the information signal. The processing unit also generates a sensor enable signal to enable the sensor unit for only a portion of the cyclical property of the indication. The system further includes a display unit located remotely with respect to the detection unit for receiving the transmission signal and displaying the power consumption. The detection unit may also employ a prediction model for reducing power consumption in the detection unit.

Metadata wherein characteristics descriptions for respective contents are performed is stored. A search server does not send back the whole metadata for each relevant metadata responding to a search request for the metadata from the client, but sends back part thereof. Thereby, a communications volume between the search server and the client is reduced. Further, it is possible to perform browsing wherein the metadata is sequentially obtained little by little.

A method of transmitting or retransmitting a packet in a communication system. The method includes determining a modulation and coding scheme (MCS) to reduce the packet error rate (PER) for transmission, where the MCS is an aggregate of M redundant packet transmissions as a function of at least one of determined past channel conditions and/or allocated resources, determinable current channel conditions and/or allocated resources, future statistical channel conditions and/or allocated resources, and/or a cost function; and transmitting the packets in the communication system according to the MCS.

The invention provides a heterogeneous database platform data synchronization method. The heterogeneous database platform data synchronization method includes the following steps that a first external data exchange module and a second external data exchange module which correspond to a source database and a target database respectively are installed in a PostgreSQL database, and a first external data exchange module extender, a first external server, a second external data exchange module extender and a second server are built, wherein the source database and the target database are heterogeneous databases; a first external data table and a second external data table which are in mapping relation with the source database and the target database respectively are built, and triggers for capturing data changes are built. The PostgreSQL database and the corresponding data exchange modules serve as media innovatively to achieve data synchronization/copying between external multi-source heterogeneous databases.

On-demand image delivery server delivering designated image data based on a request from a client terminal with one or a plurality of retrieval items as a retrieval condition inputted from the client terminal, made up by a retrieval function portion, which retrieves one or a plurality of image resource databases, and a retrieval result displaying function portion, which displays on the screen of the client terminal for confirmation of contents of image data subject to delivery, simplified image data of the image data matching a retrieval condition and/or data regarding attached contents-related information.

The present invention discloses a method, a device and a system for constructing a multidimensional address. The multidimensional address built is an identifier, and a data which can be input to the computational resource and can be processed by the computer program. The multidimensional address is used to identify the resources used or transmitted through network. The data contained in the multidimensional address comprises data used for constructing transaction and attribute, and the resources which can be used or transmitted through network are identified by the multidimensional address, to make the resources have the data of transaction and attribute constructed by the multidimensional address; the procedure comprises that a multidimensional address is automatically generated, the multidimensional address comprises data used for constructing transaction and attribute; all kinds of resources which can be used or transmitted through network are identified by the multidimensional address; the data of the corresponding transaction and attribute can be automatically constructed through the data contained in the multidimensional address and used for constructing transaction and attribute; when identifies resources, the multidimensional address constructs a data of the corresponding transaction and attribute for the resources identified through the data in the multidimensional address.

The invention discloses a service request processing method and device, a service processing result acquiring method and device, and a service request processing system. The service request processing method comprises the steps that a service request from a client is received; the received service request is forwarded to a service server which processes the service request; whether asynchronous processing is carried out for the service request is determined; if asynchronous processing is carried out for the service request, a response with an asynchronous processing instruction is sent to the client; and if asynchronous processing is not carried out for the service request, the response which is returned by the service server for the service request is sent to the client. According to the method provided by the invention, the waiting time of a client user can be shortened; the user experience is improved; and the performance and the throughput of the server are improved.

The invention relates to a backup method for the local and remote data files in network information technology field. The invention backups the data using the backup data to form new backup to satisfy the customer's requirement, it can ensure the backup for all data and provide a fast 'entire backup' method; when remote backup, it just need to transmit the increased data block which is needed to form a new backup file to the remote terminal. The increase extraction method which adopts the increased backup method generates the data which is used to generate the different backup, and then uses the previous backup different data to form the new different backup. The invention overcomes the disadvantages of low velocity and large remote backup web transport those exist in the present increase backup and different backup.

A playlist generating method for generating a playlist of content from received broadcasted data is provided. The playlist generating method includes the steps of: extracting features of broadcast content beforehand, storing the features in a content feature file, and storing information relating to the broadcast content in a content information DB; extracting features from the received data, and storing the features in a data feature file; searching for broadcast content of a predetermined kind by comparing data in the content feature file and data in the data feature file; when a name of the predetermined kind of content is determined, storing data corresponding to the broadcast content of the predetermined kind in a search result file; generating a playlist for the broadcast content of the predetermined kind from the search result file and the content information DB.

This invention puts forward a real time transmission technology of video images, which divides a video information region in a video scene into an unchanged background information region and a local region generating changed information, and only one time of collection, storage and transmission is needed for the collection of unchanged information in a video conference system, yet continuous video flows are generated to the local region generating changed information and positions and sizes of the local region are generated as the parameters to collect, store and transmit it and only one time is needed. Complete scene information is re-set up based on the received background information, continuous video flows of the local region generating changed information and the position and size parameters, which can reduce information transmission in the video and image transmission system.

The invention discloses an information interaction method and system for distance education. The method is characterized by comprising the following steps of: converting the first interaction information from a teaching resource supply end into a first reduced instruction; transferring the first reduced instruction to one or more user ends through the network; reproducing the first reduced instruction as the first interaction information at one or more user ends; and displaying the first interaction information at one or more user ends. Through the invention, compared with the video mode of traditional distance education, the cooperative operation of a teacher and students on the courseware is realized, and the interactivity (particularly real-time interactivity) between the teacher and the students is enhanced. By effectively reducing the transmission quantity of the interaction data, the occupation of network bandwidth and the storage space of courses are greatly reduced. Meanwhile, the method and system disclosed by the invention facilitate the inquiry of interaction information in the distance education course.