37results about "Television systems" patented technology

A method and apparatus for adaptively selecting a context model for entropy coding and a video decoder are provided. A method of coding a residual prediction flag indicating whether residual data for an enhancement layer block of a multi-layered video signal is predicted from residual data for a lower layer block corresponding to the residual data for the enhancement layer block includes the steps of calculating the energy of the residual data for the lower layer block, determining a coding method for the residual prediction flag according to the energy, and coding the residual prediction flag using the determined coding method.

The invention discloses a hybrid image compressing method based on block classification. In the invention, blocks are divided into text/ image block, natural image block and hybrid block according to different features of text/image area and natural image area of original images in the aspect of color and texture; then a compression mode in which palette coding, Hextile coding and LZW coding are combined is used in the text/ image block, a JPEG lossy compression mode is used in the natural image while the algorithm of the combination of the two modes is used in the hybrid block. The invention has the advantages that based on the block classification method, the text/image area and the natural image area can be divided up accurately, and that the blocks are respectively encoded can keep rather acuminate edge of the text/image block so as to enhance visual effect on the basis of ensuring higher compression efficiency and upgrade the peak signal to noise ratio of reconstructed images; the complexity of the algorithm is lower.

Techniques that facilitate tracking of physical locations of paper documents. Embodiments of the present invention can track physical locations of paper documents that have identification tags physically associated with them. Each identification tag that is physically associated with a paper document is configured to store information that can be used to uniquely identify the paper document with which the identification tag is physically associated. For a particular paper document, the identification tag physically associated with the particular paper document along with information stored in the identification tag facilitates tracking of the physical location of the particular paper document.

A system and method for sorting music files based on moods are provided. The system includes a portable terminal for sorting stored music files based on moods, for changing mood information of a corresponding music file in response to a request to change mood of at least one of the music files, and for transmitting the mood change information to a mood analyzing server, and a mood analyzing server for receiving the mood change information, for updating mood judgment information that is standard information for determining mood of a music file based on the received mood change information, and for transmitting the updated mood judgment information to the portable terminal.

The system comprises: stream-media releasing end, index server, client side, server for recording the watched program at customer end, and time transmission center. The method comprises: 1) said stream-media releasing end gets the precise time value from the time transmission center; 2) the stream-media releasing end disassembles the stream-media data into multi stream-media data fragments used by P2P system; labeling time mark on each fragment; sending the fragments to the network; 3) the client side gets the stream-media fragments data with said time mark from the stream-media release end or other P2P client sides; the client side extracts the time mark of each fragment; 5) the client side converts the time mark into the precise records of programs watched by user; collecting the precise records from all client sides.

A calibration and rectification method includes arranging a monitor vertically relative to the optical axis of the stereo camera; displaying 3D patterns, similar to patterns obtained by projecting pattern images of various postures produced by a panel virtually located in front of the stereo camera, onto the monitor through a 3D graphical technique; and the stereo camera acquiring the 3D patterns displayed on the monitor to perform calibration and rectification, thereby correcting images of the stereo camera.

The invention discloses an H.264 video integrality authentication method which comprises processes of extracting authentication codes, embedding identification information and tamper detecting and positioning. A video sequence is more complex than image information, so that video identification codes can not be extracted simply with the method of image hash value extracting. The invention provides a space energy fluctuation analysis method, according to video frames having different characteristics, an improved hierarchical quantization and vector quantization method is targetedly utilized, and video identification codes can be effectively extracted. In combination with improved H.264 robust watermarking algorithm and H.264 high-capacity information hiding algorithm, an H.264 video integrality authentication system is formed, and researches on tamper detecting and positioning can be conducted.

An apparatus for constant quality rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. Thus, an instantaneous complexity measure is updated using the complexity measure and then an instantaneous rate is calculated. A target bit budget is allocated to the current picture depending on the instantaneous rate, the complexity measure and the instantaneous complexity measure. After encoding, the activity-to-complexity ratio for the just encoded picture is computed based on the total activity measure, actual bits consumed by the picture and the average of actual quantization step sizes used to encode the picture.

A quick motion value-evaluation method of objects includes the following steps: 1, the motion evaluation of border streak macro-blocks: Taking the position determined by MV3 as the center in a reference frame to search for border streak macro-block motion vector within minus or plus sphere, if BAB corresponding to the macro-block is an in-frame encode mode, then MV3=(0,0), 2, the motion evaluation of opaque macro-block in the object includes the selection of the initial search point, determination of search sphere and judgment to the interrupt of the motion evaluation.

According to the present invention, firstly multiple reference parameter values of each color sample in a color chart are set, or a photograph and a measurement are performed on a standard color chart or a user-defined color chart in a certain standard lighting environment, multiple reference parameter values, SPD (λ)×R (λ) and brightness of each color sample are obtained. Then the SPD (λ)×R (λ) and the brightness of each color sample are reproduced by using a spectral tunable lighting source. Then each reproduced color sample is photographed by using the camera under the same settings to obtain multiple reproduced parameter values of each color sample. The two groups of parameter values are compared and a color calibration model is established. Finally color calibration of each batch of camera modules is implemented without the helping of a color chart and standard lighting environment. The present invention has the characteristics of high automation degree, high flexibility and adaptability, and high convenience in color changing and color sample calibrating, and thus has an extremely high practical value.

The invention discloses an intelligent television failure diagnosis system and diagnosis method with a remote reporting function. The intelligent television failure diagnosis system is connected to an overall system of a television, and comprises an independent AC/DC power module, a microprocessor MCU module and a WIFI network module. The overall system of the television transmits the same networking route and key to the WIFI network module of the system after being networked, and after networking, the detected working state of the overall system of the television is fed back to a remote server. According to the intelligent television failure diagnosis method with the remote reporting function, a module going wrong when the whole television is used by a user can be accurately notified to after-sales service personnel in advance, so that the after-sales maintenance efficiency of the whole television is improved, experiences in the intelligent service of the television are also provided for the user, and television user experiences are improved.

The invention provides a service system, a signal server and an intercom server. The service system comprises a signal server and at least one intercom server, wherein the signal server is used for forwarding a service request initiated by terminal equipment to a selected intercom server according to current load information of each intercom server when the service request is received; and the intercom server is used for establishing connection with the terminal equipment after receiving the service request, acquiring audio/video data uploaded by the terminal equipment and forwarding the audio/video data to other terminal equipment of a chat room. By applying the service system provided by the invention, an intercom function of the terminal equipment can be further realized on the basis of improving the system communication efficiency and the system comprehensive performance, the terminal equipment is enabled to be more intelligentized, and the user experience is improved.

The embodiment of the invention provides a video frame image testing method, device and equipment and a computer storage medium, and the method comprises the steps: obtaining a to-be-tested video anda reference video, and enabling the version information of the to-be-tested video to be different from the version information of the reference video; obtaining a logic frame number of each test frameimage in the to-be-tested video, and obtaining a logic frame number of each reference frame image in the reference video; respectively determining the similarity between the test frame image and thereference frame image with the same logic frame number to obtain the similarity value of each image; determining a test result of the to-be-tested video based on each image similarity value; and outputting the test result. According to the invention, the completely corresponding test frame image and reference frame image are obtained by using the logic frame number, so that the test accuracy of the video frame image is improved.

The invention discloses a video quality evaluating method and device. The method includes acquiring wireless channel measurement data and application layer transmission performance statistics data during a video data transmission process; determining the difference between the wireless channel measurement data and a first evaluation reference and the difference between the application layer transmission performance statistics data and a second evaluation reference; evaluating video quality of the video data according to the determined difference. The invention can provide a technical solution, which is simple in algorithm and easy to implement, for objective video quality evaluation.

The invention provides a frame-field self-adaptive detecting method, which calculates the characteristic value C1 of input image according to the input image; finding the detecting threshold Tn of present frame according to the first N frames of input image; when C1 H04N 7/32 1 7 2 2005/9/8 1738431 2006/2/22 100407795 2008/7/30 2008/7/30 2008/7/30 Central Academe of SVA (Group) Co., Ltd. Shanghai 200233 Li Ping Hou Gang Wang Guozhong Li Guoping Chen Yong zhong chengxuan 31213

The invention discloses a video coding intra-frame prediction method, which comprises the steps of: in the aspect of brightness prediction, according to image characteristics, the degree of correlation between coded pixels and coded adjacent predicted pixels and sub-adjacent coded predicted pixel information, adopting different brightness prediction modes; and in the aspect of chromaticity prediction, adopting a chromaticity intra-frame prediction mode based on sub-blocks to predict different coded sub-blocks by using different predicted pixels according to the characteristic that the degree of correlation between the pixels and the coded adjacent pixels of the current encoded sub-block is decreased with the increase of distance. By adopting the method for intra-frame prediction, the prediction is more accurate and the coding effect is improved. Not only is the intra-frame prediction method provided by the embodiment of the invention a complete intra-frame prediction system, but also each prediction mode can be separately used.

The invention discloses a motion compensation reference block data reading device and a motion compensation reference block data reading method for embedded video decoding. The device and the method are used for reading the reference block data of a current decoding macro block from an off-chip reference frame buffer into an on-chip memory space in the embedded video decoding. In the device and the method, inter-frame macro blocks are classified according to types and motion vectors of the macro blocks, different reference block data ranges are determined respectively, and the reference block data is read into the on-chip memory space once. Simultaneously, boundary extension is performed on data out of a reference frame range, so the reference block data is not required to be judged whether to exceed a reference frame boundary or not in subsequent sub-pixel interpolation. By the device and the method, on-chip and off-chip data interaction times can be remarkably decreased, the overlapped part of data of adjacent 4*4 reference blocks can be reduced, and an on-chip and off-chip interactive data volume can be decreased.

The invention discloses a quick searching method for block motion matching of video coding technique; the quick searching method adopts a first searching template F and a second searching template S; wherein, the first searching template F includes 1 central detection point and 4 peripheral detection points; and the second searching template S includes 1 central detection point and 8 peripheral detection points. In the method, 1, a searching point is arranged in a reference frame of an original block of the current frame according to a search box, and is set as the central detection point of the template F; 2, searching cost of the 5 detection points of the template F is calculated to find out the pixel point with the minimum searching cost, if the pixel point is any one of the 4 peripheral detection points, the step 4 is executed, else the step 3 is executed 3; 3, the current pixel point with the minimum searching cost is set as the central detection point of the template S, the searching cost of the 9 detection points is calculated to find out the pixel point with the minimum searching cost, and then step 5 is executed; 4, the current pixel point with the minimum searching cost is set as the central detection point of the template F, and the step 2 is executed; and 5, the current pixel point with the minimum searching cost is used as the optimum matching point.

The embodiment of the invention discloses a method and a device for determining a priority to schedule packets. In the embodiment of the invention, two different interception modes are adopted to intercept code streams of groups of pictures (GOP), total distortion of each frame of the pictures is obtained by decoding twice under two different interception modes, and the total distortion of each frame of the groups of pictures under different interception modes and current frame distortion of each frame of the pictures in the groups are adopted to obtain the influence weight of each scheduled packet on the group of pictures in each frame to the groups of pictures, thus having relatively less decoding times and greatly lowering the complexity for determining the priority to schedule packets.

An object of the present invention is to prevent illegal use of data (digital contents), and a second object is to provide a method for processing data which ensures the collection of charges for secondary use of the data, a data reading method for reading the data processed by this processing method, and a recording medium storing programs implementing these methods. The method for processing data is such that in a method for processing a data body b which is encrypted and is decrypted on a decryption bit length basis, and thereby is reproduced, the data body b is encrypted, a part of this data body b with a bit length different from the decryption bit length is omitted, and the omitted part is closed so as to make the data continuous.

The invention discloses a state monitoring system and method of transportation equipment. The state monitoring system is composed of a traffic checkpoint device, an electronic police device, a video quality detection module, an equipment alarm module, a system database, a video quality diagnosis module, and an alarm station. With the state monitoring system and method, equipment alarming, passingvehicle data abnormity alarming, illegal data abnormity alarming, and video quality diagnosis alarming are realized; and the running state of the intelligent transportation equipment is monitored frommultiple angles and states like an equipment fault, equipment abnormity, and efficiency-reduction running are discovered accurately.

The embodiment of the invention provides a processing method and device for realizing automatic detection of a set top box. The method comprises the following steps: receiving a test request sent by the set top box; Determining a to-be-tested option corresponding to the set top box, and sending a test task instruction to the set top box; Wherein the test task instruction carries the to-be-tested option; And receiving a to-be-tested element which is returned by the set top box for the to-be-tested option and corresponds to the to-be-tested option, comparing the to-be-tested element with a preset standard, and taking a comparison result as a detection result for detecting the set top box. The device executes the method. According to the processing method and device for realizing automatic detection of the set top box provided by the embodiment of the invention, the set top box can be automatically detected, so that the detection efficiency and the accuracy of a detection result are improved.

The invention discloses a detection function verification method and device, equipment and a medium, which are applied to LSC data detection equipment, and the method comprises the following steps: obtaining standard LSC data and sample LSC data by a target camera module; detecting the standard LSC data and the sample LSC data through LSC data detection equipment, and obtaining detection results; and determining whether the detection function of the LSC data detection equipment is normal or not according to the detection results. According to the method and the device, the standard LSC data with the correct sequence and the sample LSC data with the wrong sequence can be obtained through simulation on the premise of avoiding manufacturing wrong burning software and defective product modules; and the LSC data detection equipment is used for detecting the obtained standard LSC data and the sample LSC data to obtain the detection result, and whether the detection function of the LSC data detection equipment is normal or not can be determined according to the detection result, so that the verification cost of the detection equipment can be saved.

The invention discloses a television mainboard detection method and device, a television mainboard and a medium, and belongs to the field of televisions. The television mainboard detection method comprises the following steps: when the television mainboard is powered on and started, detecting the current state of the first reserved port; and if the pre-stored low-voltage differential signal data is not in the preset state, outputting the pre-stored low-voltage differential signal data, so that the television mainboard detection equipment identifies and displays the pre-stored low-voltage differential signal data. According to the invention, universality of different detection tools can be realized.