615results about How to "Save time resources" patented technology

The invention relates to the technical field of digital earth, in particular to a digital earth prototype system comprising a data receiving and fast processing sub-system, a metadata service sub-system, a model base sub-system, a space information database sub-system, a mesh calculation sub-system, a map application service sub-system and a virtual reality sub-system. With the adoption of the invention, it is able to construct a data resource sharing platform, a knowledge sharing platform, a computation resource sharing platform and a coordinated operation platform of the digital earth prototype system. Besides, with the establishment of the prototype system, the invention resolves relevant key technologies for the construction of a technology service platform for the application of space data and forms a service system for the application of space information in earth technology.

The utility model provides a interference clearance technique, so that the up-down-going link of the wireless communication can run via the same frequency and the time-slot, so as to improve the rate of spectrum utilization. When the up-down-going channel is under the common frequency and the time-slot, the down link will interfere the up-link, namely, the base station receiver in the sub-zone is interfered by the base station transmitter of the sub-zone and the base station transmitter of the adjoining sub-zone. The utility model delivers the undesired signals to the receiver through the wired communication. The receiver is arranged with a signal preprocessing unit, so as to remove the transmitter signal interference in the radio frequency. Such signal interference is from the air interface. In addition, the utility model provides an aerial distribution rule to reduce the direct interference of the transmitter to the receiver. The interference clearance method is suitable to the duplex system with the common frequency and time-slot, so as to greatly reduce the frequency resources and time resources.

The invention discloses a signal retransmission method based on the hybrid automatic repeat request (HARQ) technique in an orthogonal frequency division multiplexing (OFDM) system, which belongs to the field of wireless communication systems. The method comprises the following steps: firstly a transmitting terminal receives the re-transmission information from a receiving terminal, and then the transmitting terminal increases the density or intensity of a pilot signal in a transmission-side memorizer and then retransmits the signal. The signal retransmission method increases the signal transmission quality and the retransmission reliability of the broadband wireless communication system during the retransmission process, thereby reducing the retransmission frequency of the wireless communication system and saving time resources.

The invention provides a water surface optical visual image target area detection method based on gradient information fusion. The water surface optical visual image target area detection method based on gradient information fusion adopts two sliding window modes and calculates the longitudinal gradient and the transverse gradient of a water surface optical visual image. The information of the two gradients is fused, the position of an area is marked through a connected component detection method, and the target area is marked according to the final boundary of a target. The water surface optical visual image target area detection method based on gradient information fusion combines sea boundary area characteristics of the water surface image, respectively extracts target boundary information in the longitudinal gradient and the transverse gradient directions of the water surface optical image, determines the attribute of the sea boundary line and division of an image processing space, determines the area type attribute of the target boundary according to the fused information, and finishes scanning and classification of pixels according to the property of the boundary. As the water surface optical visual image target area detection method based on gradient information fusion fuses the information in the two gradient directions by combining the characteristics of the sea boundary lines, reduces the range of the processing area, reduces influence from noise, avoids calculation and processing of the whole image space, and saves calculation time.

The invention discloses a wireless relay communication system SWIPT (Simultaneous Wireless Information and Power Transfer) method. The time and power distribution scheme of a wireless power supply relay communication system under the requirements of certain service quality and interrupt performance saves the time and energy resources, and is suitable for wireless communication. When the system is in operation, a transmitting end transmits energy and signals to a relay network. After given time, the relay network decodes the received signals and transmits the signals to a receiving end through employing a part of received energy. Through a derived system interrupt probability progressive expression and a simulation result in a flat Rayleigh fading channel, the method designs the distribution of time and power factors. The method can remarkably save the time and energy resources.

The invention provides a washing machine and an automatic control method thereof. The method comprises the following steps: a, receiving instructions input by a user through a start button; b, allowing the washing machine to be in a weighing mode according to the instructions so as to acquire the weight of clothes in a cylinder, wherein the weighing mode is connected in parallel with a motor; and c, determining the water level and washing mode correspondingly according to the weight obtained, and controlling the washing machine to perform washing. According to the washing machine and he automatic control method thereof provided by the invention, the automatic washing of clothes can be realized only through a button, the automation degree is higher, the purposes of energy conservation and environmental protection are achieved. Besides, the control method is simple, a washing machine operation interface is simple, and the time is saved.

The invention relates to an automatic focusing method of a digital camera; the main program of the automatic focusing method thereof comprises the following steps: step one: the connection end of a lens hardware is defined for determining the circulation of control signals; step two: the position of the lens is initialized; step three: large-step overall scanning is carried out; step four: the optimal evaluation function value of a first focusing window is obtained; step five: the embedded focusing window is converted by a short-step scanning; step six: whether the position for the largest value of the evaluation function is reached is judged; if the position for the largest value of the evaluation function is reached, step seven is then carried out; if not, the step five is carried out again; and step seven: the optimal position is determined and the search is ended. By using the automatic focusing algorithm which is designed by the method of the invention, precise focusing can be realized by quickly switching the focusing windows, moreover, as the design for a golden section point nested focusing window greatly accelerates the search speed of the optimal focusing position and the imaging aesthetics need is also greatly met, the rapid focusing aesthetic imaging performance of consumption-typed cameras is really achieved.

The invention discloses a connection management method. Via the method, when the state of a terminal is switched, it is not required to send a state switching signaling message to a core network of a base station, and instead, network side equipment determines that the terminal is in an idle state when there is no uplink and downlink data transmission and a first timer is overtime; and the realization complexity of a system is reduced, and time and communication resources are saved. The method comprises that when the terminal is in a power-saving state, the terminal determines whether the first timer exceeds a preset threshold, and if YES, the terminal is switched from the power-saving state to the idle state; the terminal does not sends a state change notification to the network side equipment, and according to change from the power-saving state to the idle state of the terminal, an update TAU message of a tracking position area is sent to the network side equipment; and the terminal receives downlink data from the network side equipment.

The invention provides an information preview method of flexible screen equipment, and the flexible screen equipment. The method comprises the steps that (S110) at least two sensors are disposed on relative positions of the flexible screen equipment, and bending direction information of the flexible screen equipment is acquired; (S120) when a judgment result indicates that the bending direction information is located in a preset direction, information of a to-be-displayed document in a display area will be extracted to generate a preview picture; and (S130) the size of the preview picture is adjusted according to the bending direction information, and a preview picture obtained after adjustment is displayed. According to the invention, the at least two sensors are disposed at relative positions of the flexible screen; with data collected by the at least two sensors, the bending direction information aiming at the flexible screen can be judged more effectively and accurately; and the preview picture can be adjusted according to the bending direction information, so a user's browsing habit of previewing information with the flexible screen equipment can be satisfied better.

A method, device and host for updating metadata stored in columns in a distributed file system, the method comprising: obtaining the metadata to be updated in a data table in the distributed file system; segmenting the data records in the data table by row into a plurality of row groups; converting the data table to one global file metadata and a plurality of row group files (110), the row group files comprising actual data blocks, data index blocks, local metadata blocks, metadata index blocks and file footers; determining whether the metadata to be updated belongs to the global file metadata (120); if not, then updating the local metadata (130); adding the updated local metadata blocks, the metadata index blocks and the file footers to the a plurality of row group files according to the updated local metadata(140). The method realizes dynamic updating of the metadata, greatly saves the execution time of such updating operation and the required calculation resources.

The invention discloses a circuit for rapidly capturing a long period pseudo random spread spectrum code of a satellite navigation receiver and a capturing method thereof. The circuit comprises: a data preprocessing module, a sampling data control module, a frequency mixing module, a local spread spectrum code generation module and a single capturing engine. The single capturing engine comprises:a local spread spectrum code memory, a first stage coherent integral module, a first stage coherent data memory, a second stage coherent integral module, a third stage incoherent integral module and a threshold control comparison module. An output terminal of the data preprocessing module is connected with an input terminal of the frequency mixing module through the sampling data control module. The output terminal of the frequency mixing module is connected with one input terminal of the first stage coherent integral module. The local spread spectrum code generation module is connected with another input terminal of the first stage coherent integral module. The circuit of the invention has the following characteristics that: integral gain is high; an anti-electromagnetism interference ability is strong; a capturing sensitivity is high; capturing precision is high; a capturing false alarm rate is low; a capturing speed is fast; reliability is high. And there are many other characteristics.

The invention discloses a method for extracting compressed video key frames. The method includes: firstly, extracting color characteristics of a video from a DC coefficient, then extracting characteristics of edges, textures and the like of an AC coefficient and normalizing different values by means of a Gaussian model to obtain fusion characteristics, so that complete characteristic similarities are obtained to improve representativeness and increase the accuracy rate of the key frames; and then establishing a curve by the aid of the complete characteristic similarities, and performing curvature detection for the curve for twice so as to extract the key frames. By the method, the key frames capable of reflecting main contents of the video can be accurately extracted, and the defect of incomplete video content descriptions by using DC coefficient characteristic information only is made up. Moreover, automatic extraction of the key frames is realized by means of two-time curve detection, and artificial determination of the amount of the key frames is avoided.

The present invention provides an information interaction system of digital control processing workshop, wherein the information interaction system comprises an information interaction server, manufacturing executing software which is disposed on the information interaction server, and an information alternation terminal provided with a touch display screen. The manufacturing executing software realizes the information alternation. The manufacturing executing software comprises a data collection and information interaction module, a work order management module, a technical data management module, a pattern browsing and program transmission control module and a data statistics analysis module. The system can automatically display the work order and technical data on the information interaction terminal of each station in the production field dynamically according to the device number and employee number of operator. The operator can browse the technical data, download the digital control processing program and quickly collect the production data through the information interaction terminal. The invention realizes the dynamic transmission of field production information and quick collection of production data in the digital control processing workshop. The real-time implementation of workshop production control is increased. The quick response capability and production efficiency of production process of digital control workshop can be greatly increased.

The invention discloses a method and a device for upgrading client-side applications. The method comprises the following steps: comparing a high-version file of a specified application with a client-side low-version file of the specified application accurately to binary system to obtain binary system difference information; and saving the binary system difference information in an increment file; and sending the increment file to the client so that the client upgrades the specified application to the high version from the low version. The binary system difference information generated by comparing the high version with the low version is far smaller than the size of incremental upgrading data in the prior art, and therefore, the size of the increment file needed by upgrading the application in the method is far smaller than the size of the increment file in the existing incremental upgrading technology; as a result, data can be saved during downloading and the time and device resources of a user also can be saved during installation.

The invention provides a method and client for playing a video by selecting corresponding video progress through a picture. The method comprises: presenting one or more than one feature picture corresponding to the video in a display interface for a user to browse; based on a certain feature picture browsed by the user, receiving an instruction from the user for selecting the video progress corresponding to the feature picture to start playing, and linking to the playing progress corresponding to the feature picture in the video; and starting to play the video from the playing progress linked by the selected feature picture. By using the method and the client provided by the invention, a video clip which the user wants to watch can be accurately positioned.

The invention discloses a method for realizing video preview and retrieval, which comprises the following steps of: setting a buffer sequence with variable length; extracting a video file and processing the video file to obtain an image; detecting a scene lens in the obtained image and a key frame of the scene lens, and storing the detected scene lens and the detected key frame into the set buffer sequence with the variable length; and extracting the scene lens and the key frame from the buffer sequence with the variable length, matching and comparing the scene lens and the key frame with a specified target image, and performing the video retrieval. The invention also discloses a mobile terminal for realizing the video preview and the retrieval. According to the technical scheme of the invention, content preview and quick retrieval of the video file are realized in the mobile terminal with relatively limited processing capability and memory resource.

The invention provides a method and a system for playing a video in groups. The method comprises the steps of performing grouping processing on each complete video to divide the complete video into a plurality of groups of sub-videos having different starting moments in the complete videos, generating a characteristic image and/or a video description information for each group of sub-videos, sorting all the characteristic images and/or the video description information according to the starting moments so as to generate a browsing interface on which a user can browse the characteristic image and/or the video description information corresponding to each group of sub-videos, and providing trigger portals for the user to select to play the corresponding sub-videos on the browsing interface so that the corresponding sub-videos can be invoked and played. The method and the system for playing the video in groups have the advantage that a video clip which the user wants to watch can be accurately positioned.

The invention provides a wide and narrow orthogonal pulse compensation method for pulse radar. A pair of a wide pulse and a narrow pulse which are subjected to orthogonal modulation is emitted for each pulse repeated period, and then an accepting state is switched to; the wide pulse is in the front and the narrow pulse is at the rear in the pair of the wide pulse and the narrow pulse; and in the accepting state, an echo signal of the wide pulse and an echo signal of the narrow pulse, which are overlapped in time, are separated, by means of matching filers corresponding to the wide pulse and the narrow pulse respectively. According to the wide and narrow orthogonal pulse compensation method, after the wide pulse is emitted, the narrow pulse is directly emitted, receiving time of wide pulse echo is not required to be reserved, and the time interval of each pair of the wide pulse and the narrow pulse is zero or extremely short so that precious time resources are saved and not used, and additional time expenses are avoided.