497results about How to "Reduce the amount of data transferred" patented technology

The invention provides a desktop sharing method and a system. The system comprises a sharing terminal, a multimedia multi-point control unit, a viewing terminal and a control terminal, wherein, the sharing terminal is used for collecting desktop images and position and status information of a mouse, receiving operation events from the control terminal and replaying and displaying the events after processing; the multimedia multi-point control unit is used for forwarding the desktop images and the operation events; the viewing terminal is used for receiving the desktop images, and the position and status information of the mouse from the sharing terminal and replaying and displaying the information after decoding and decompression; and the control terminal is used for receiving the desktop images from the sharing terminal, replaying and displaying the information after decoding and decompression, simultaneously carrying out the operation on the desktop images transmitted by the sharing terminal and sending the operation event to the sharing terminal by MCU. The viewing terminal of the desktop sharing system can smoothly browse the remote desktop image and carry out the operation on the sharing terminal by the remote control terminal, truly reflects the operation events as the operation on the sharing terminal, and has excellent interaction effect.

Improved techniques for synchronization of media contents stored on a media player with media contents stored on a host computer are disclosed. According to one aspect, synchronization can be automatically initiated and performed upon connection of a data link between the media player and the host computer. According to another aspect, synchronization is able to be achieved with a reduced amount of data transfer between the host computer and the media device.

An apparatus for providing data for wave field synthesis rendering in a wave field synthesis system with plurality of renderer modules, at least one loudspeaker being associated with each renderer module, and the loudspeakers associated with the renderer modules being attachable at different positions in a reproduction room, includes a provider for providing a plurality of audio files, wherein a virtual source at a source position is associated with an audio file, and a data output for providing the audio file to a renderer with which an active loudspeaker is associated, with the data output further formed to not provide the audio file to a renderer if all loudspeakers associated with the renderer are not to be active for the reproduction of the source. Thus, unnecessary data transmissions in the wave field synthesis system are avoided, while making optimum use of the renderer maximum capacity in a multi-renderer system.

The invention provides a method for acquiring and imaging data of compressive sensing synthetic aperture radar. The method comprises the following steps of: 1, selecting an observation scene; 2, emitting a Chirp signal by a radar antenna; 3, receiving a distance direction signal of the synthetic aperture radar; 4, constructing a compressive sensing restoring matrix; 5, correcting distance compression and distance migration; 6, constructing an orientation direction filter matrix; and 7, compressing towards the orientation direction. By the method for acquiring and imaging the data, aiming at realizing great reduction of radar stored and transmitted data quantity in the special observation scene and synchronously realizing restoring of a distance direction pulse compression signal and correction of the distance migration, the problem that interpolation calculation cannot be performed on a compressive sensing restoring signal is solved.

To perform an adequate encoding process while cutting a data transfer amount in an encoding process of moving images.

A moving image processing apparatus 1 has a motion detection/motion compensation processing portions 80 as a coprocessor for performing a motion detection process as a process of a large calculation amount added to a processor 10 for managing an entire encoding or decoding process of a moving image, and has a buffer addressed to a plurality of memory banks by interleaving. A procedure for reading image data on the motion detection process is a predetermined method, and a section capable of adequately handling a case of reducing read image data is provided. As for the moving image processing apparatus according to the present invention, it is possible, with such a configuration, to perform an adequate encoding process while reducing a data transfer amount in the encoding process of the moving image.

A head section includes: a light projecting part for projecting incident light as structured illumination of a predetermined projection pattern; the image capturing part for acquiring reflected light that is projected by the light projecting part and reflected on an inspection target, to capture a plurality of pattern projected images; a distance image generating part capable of generating a distance image based on the plurality of pattern projected images captured in the image capturing part; a head-side storage part for holding the distance image generated in the distance image generating part; and a head-side communication part for transmitting the distance image held in the storage part to the controller section. The controller section includes: a controller-side communication part for communicating with the head-side communication part; and an inspection executing part for executing predetermined inspection processing on the distance image received in the controller-side communication part.

The invention discloses a host-free parking radar system of a series structure. The system is provided with a plurality of sensors, at least one alarm, an internal network and an external network; each sensor comprises a microprocessor, a communication module, an ultrasonic sensor, a driving transmitting module and an ultrasonic receiving module; the communication module comprises a first interface module, a second interface module and an analog switch, wherein the first interface module and the second interface module are led outwards respectively to form a first terminal and a second terminal, and the analog switch is connected between the first terminal and the second terminal and enables information of the first terminal and the second terminal to be interconnected; and the first terminal of each sensor is connected with the second terminal of the adjacent sensor through the internal network to form the series structure, and the first terminal or the second terminal of the sensor positioned at the end is connected with the alarm through the external network. The host-free parking radar system has the effects of simplifying wiring harness connection, reducing vehicle body weight, reducing cost and improving the production efficiency and the installation efficiency.

The invention discloses a realization method for mobile handover of a next generation of IP full wireless sensor network. The wireless sensor network comprises a gateway node, a fixed sensor node, a mobile sensor node and a correlative node of the mobile sensor node. The current correlative node of the mobile sensor node is used for carrying out mobile monitoring to the mobile sensor node; and when the mobile sensor node is about to being separated from a communication scope of the mobile sensor node, the correlative node is responsible for searching a next correlative node of the mobile sensor node and executing the mobile handover to ensure the accuracy and the continuity of the mobile sensor node during the communication. In the invention, the mobile handover control information is automatically routed through a network topology, so that the power consumption and the delay time brought by routing are saved. In addition, the mobile sensor node is not required to carry out care-of address and participate in the mobile handover control process, so that the energy is saved, and the service life is prolonged. The invention can be applied to various fields like agricultural facility modernization, medical heat care and the like.

The invention discloses a block level backup method based on content address storage, which comprises the steps that A, according to a size and a threshold of a predefined data segment and a source volume state bitmap, and by taking a data block as a unit, and a continuous 1 sequence in the source volume state bitmap as a basis, a source volume data area is segmented, and each single segment is named as a data segment; and B, according to a fingerprint algorithm, a data segment fingerprint is computed, an old fingerprint of each data segment is acquired by querying a fingerprint library, whether each data segment is a repeating data segment or a non-repeating data segment is determined, each non-repeating data segment is transmitted to a storage medium by a network, and the fingerprint library is updated. The invention further provides a client based on the content-addressed storage and a network storage system. With the adoption of the technical scheme, high-efficiency de-duplication can be achieved.

A method of generating optimum parallel codes from a source code for a computer system configured of plural processors that share a cache memory or a main memory is provided. A preset code is read and operation amounts and process contents are analyzed while distinguishing dependence and independence among processes from the code. Then, the amount of data to be reused among processes is analyzed, and the amount of data that accesses the main memory is analyzed. Further, upon the reception of a parallel code generation policy inputted by a user, the processes of the code are divided, and while estimating an execution cycle from the operation amount and process contents thereof, the cache use of the reuse data, and the main memory access data amount, a parallelization method with which the execution cycle becomes shortest is executed.

The invention discloses a method and a device for realizing video calling, wherein the method comprises the steps of establishing video calling connection with an opposite-end device; acquiring the current 2D image of the local end; and according to the current image, generating a driving parameter which corresponds with a local-end user, and transmitting the generated driving parameter to the opposite-end device. According to the method and the device of the invention, because transmission of small data volume of driving parameter is required in the video calling process, volume of transmitted data is greatly reduced.

A motion vector detecting unit 24 detects a motion vector between an input image and a reference image. A reduced image creation unit 40 reads out pixel data of the reference image from the frame memory, and creates a reduced image at a lower resolution than that of the original reference image. A reduced image holding unit 42 stores a part or all of the reduced image thus created. A computation unit 44 performs matching computation between the input image and the reference image using the reduced images, thereby detecting an approximate motion vector. Subsequently, the computation unit 44 detects a motion vector using the images at the original resolution with reference to the approximate motion vector. When the computation unit 44 detects the motion vector using the reduced images, a part of the reduced image stored in the reduced image holding unit 42 is not newly created, and is read out from the reduced image holding unit 42.

The present invention enables image information of high resolution to be transferred via a transmission line with limited band width using a simple configuration. In transferring image information between a main body of a computer and a display, a dither matrix is used to update images stored in the display. That is, a plurality of blocks whose size is of a predetermined dither matrix are defined in an image, and information of each pixel in each block is transferred to the display in order of a value of a corresponding element in the dither matrix. Transfer of unchanged pixel data can be omitted. In addition, in transferring image information between the main body of the computer and the display, image information stored in the computer is divided into a plurality of blocks, for each of which the number of changed pixels or the number of writings to pixels in the block is calculated so that image information in blocks which exceed a predetermined number is transferred to the display block by block.

The invention relates to a data transmission method, a host unit, an expansion unit, a base station system and a readable storage medium. The method is applied to the base station system, the base station system comprises a host unit, a plurality of expansion units and a plurality of remote unit, the host unit is in communication connection with the plurality of expansion units, and each expansion unit in the plurality of expansion units is in communication connection with at least one far-end unit. The method comprises the steps of using the host unit to determine a target expansion unit corresponding to user equipment from a plurality of expansion units according to uplink signals received from the plurality of expansion units respectively, wherein the uplink signal sent by each extension unit is used for indicating the signal quality condition between the far-end unit connected with the extension unit and the user equipment; sending the indication information to the target expansion unit, wherein the indication information is used for indicating the target expansion unit to send uplink data of the user equipment received from the remote unit to the host unit; and receiving the uplink data sent by the target expansion unit. By adopting the method, the requirement for the front transmission bandwidth can be reduced.

The invention relates to a system for extending caches by the aid of software architectures. The system comprises a service side and a client side. A plurality of groups of servers are deployed between the service side and the client side to be used as extended cache servers to extending the caches, and each group of servers comprises a master server and a plurality of standby servers; cache control modules are additionally arranged in an existing system so as to determine read-write use of the caches on the client side and/or extended caches on the extended cache servers. The system has the advantages that the distributed caches are introduced into enterprise application architectures, and the performance and the stability of the original system can be enhanced by the aid of the software architectures.

The invention discloses a tree structure-based data aggregation method with reliability assurance. The aggregation method comprises the following steps: generating a tree creating module, an in-tree data aggregation module and a data detection module, and generating a tree revising module. The aggregation method adopts the tree structure to realize fast aggregation of data in the network, ensure that data can be conveniently found and used in the entire network, reduce the communications of the network in the data aggregation process and prolong the service life of the entire network; and the data detection method and the method of generating tree revise are both adopted and the phenomenons such as the damage and death of node can be monitored and found, thus increasing the accuracy and effectiveness of data transmission in the network and the reliability of the entire network.

The invention discloses an image display method and a liquid crystal display. Before a to-be-displayed frame of image is displayed, in a condition in which polarity for each row of data does not need to be reversed when the to-be-displayed frame of image is displayed, data corresponding to each row in the to-be-displayed frame of image is compared with data of a corresponding row in a former frame of image; and in the to-be-displayed frame of image, rows whose data are different from corresponding rows in the former frame of already-displayed image serve as change rows, and the change rows only need to be refreshed. Thus, as long as two frames of images with kept polarity have rows of the same data, when the latter frame of image in the adjacent two frames of images is displayed, the same row does not need to be refreshed, power consumption for image refreshing can be effectively reduced, and the image display power consumption can be effectively reduced.