31results about "Picture reproducers using cathode ray tubes" patented technology

There are provided a method and apparatus for illumination and color compensation for multi-view video coding. A video encoder includes an encoder (100) for encoding a picture by enabling color compensation of at least one color component in prediction of the picture based upon a correlation factor relating to color data between the picture and another picture. The picture and the other picture have different view points and both corresponding to multi-view content for a same or similar scene.

A plurality of motion vector candidates is extracted, which includes motion vectors of a first set of blocks and a second set of blocks each adjacent to an object block. The first set of blocks has the same size as the object block. The second set of blocks has a smaller size than the object block. A first predicted motion vector of the object block is selected from the plurality of motion vector candidates. A residual cost of each neighboring motion vector is calculated. Each neighboring motion vector points a point within a predetermined range from a point pointed by the first predicted motion vector. A second predicted motion vector having the minimum residual cost is selected from the plurality of neighboring motion vectors. If the first predicted motion vector is equal to the second predicted motion vector, the first predicted motion vector is set as the motion vector of the object block. If the first predicted motion vector is not equal to the second predicted motion vector, a search region pointed by the first predicted motion vector is searched by block matching.

A method is provided for reclaiming bandwidth from an edge device. The method includes communicating a bandwidth query message to at least one session manager. The bandwidth query message specifies an amount of bandwidth that needs to be reclaimed from a single one of a plurality of edge devices in order to establish at least one additional session that delivers a digital service to a subscriber in a service group serviced by the plurality of edge devices over an access network. In response to communication of the bandwidth query message, a bandwidth query response message is received from the session manager identifying an edge device from which at least the specified amount of bandwidth can be reclaimed. A response is communicated to the session manager requesting the session manager to reclaim the specified amount of bandwidth from the edge device that has been identified.

An apparatus and method for writing and/or reading data in an image processing system are provided. The apparatus for writing data includes: a memory formed with at least one or more banks capable of being accessed independently; and a memory control unit controlling so that a luminance component, a first chrominance component and a second chrominance component belonging to one macroblock are written based on respective structures different to each other, in the memory. The apparatus for reading data includes: a memory formed with one or more banks capable of being accessed independently in which a luminance component, a first chrominance component, and a second chrominance component belonging to one macroblock are written based on respective structures different to each other, in each bank of the memory; and a memory control unit controlling so that a luminance component, a first chrominance component, and a second chrominance component required are read from the memory.

A method of processing a caption for a digital video disk (DVD) includes loading a prepared caption script of a predetermined language in a caption indicator, showing a moving picture corresponding to the caption script and ascertaining the caption generation point and caption annihilation point of the shown moving picture, writing time codes corresponding to the caption generation point and the caption annihilation point and displaying a list of caption scripts and a list of time codes on the caption indicator, checking the state of the time codes and the state of a corresponding caption displayed, and correcting the state of the time codes and the state of the corresponding caption displayed, and correcting the state of the time codes and the state of the corresponding caption displayed if an error is detected, and producing the caption scripts and the time codes in a scrip file.

Systems and methods for scalable video coding using special inter-layer prediction modes (called telescopic modes) are provided. These modes facilitate accelerated operation of encoders with improved coding efficiency.

A method for calculating a direct mode motion vector for a bi-directionally predictive-picture includes: calculating S based on TRB, TRD, and N; calculating Tx based on MVx, the S, and the N; calculating Ty based on MVy, the S, and the N; obtaining a sum of the Tx, MVDx and δ1x, and using the obtained sum as MVFx; obtaining a sum of the Ty, MVDy and δ1y, and using the obtained sum as MVFy; obtaining a sum of the MVFx, δ2x, and a minus value of the MVx, and using the obtained sum as MVBx; and, obtaining a sum of the MVFy, δ2y, and minus value of the MVy, and using the obtained sum as MVBy.

A video encoder comprises a video frame receiver (101) connected to a processor (103) deriving relative frames from the received video frames and predicted frames. The processor is connected to a Discrete Fourier Transform (DCT) processor (105) which again is connected to a quantiser (107) for generating quantised spatial frequency coefficients for the relative frame. The output of the quantiser (107) is fed to a splitter that splits the data subset having low frequency components and a second data subset having frequency components. The first subset is used in the encoding loop comprising an inverse quantiser (111), inverse DCT processor (113), motion compensation processor (115, 117) and predicted frame processor (104). Hence, the encoding loop is simplified by only considering a reduced data set for each frame. A transmitter (119) transmits the video data as a progressively scalable stream for both the first and second data subsets.

A signal processing apparatus includes a conversion unit, an encoding unit, and a control unit. The conversion unit converts first moving image data having a first frame rate into second moving image data having a second frame rate by inserting a new frame into the first moving image data having the first frame rate at predetermined timing. The encoding unit encodes the second moving image data having the second frame rate by selectively using intra-frame encoding and inter-frame prediction encoding. The encoding unit classifies each frame of the second moving image data as a first frame type which is not referred to in the inter-frame prediction encoding and a second frame type which is referred to in the inter-frame prediction encoding, and the encoding unit encodes the second moving image data according to the classification result. The control unit controls the encoding unit such that the frame inserted by the conversion unit among the second moving image data is encoded by classifying the inserted frame as a particular frame type.

A method for optimizing a video transmission, in a constrained environment using a video coder adapted for coding the video data to be transmitted, includes determining one or more compression parameters for the video coder considered to transmit the video data at a given throughput or for a given quality. The method defines and uses reference charts for the coder considered, and predicts for the part of the video sequence undergoing compression, using the reference charts, compression parameters to be used, such as the quantization interval, by selecting a chart for which the targeted range of throughput or of quality is the closest in distance to the part of the sequence to be compressed, while complying with a given margin, and updates with an iterative method the prediction step to converge on the best choice of parameterization. The iteration includes at least one compression step followed by a verification step, to compress the video data to be transmitted with the parameters.

In distributing moving image data, it is an object to make it possible to start reproduction, not only from the head of the moving image data, but also from any desired position and to minimize an increase in the amount of the processing. A moving image data conversion device (1) comprises moving image data receiving means (2) for receiving moving image data (6), decoder configuration information saving means (3) for retrieving and holding decoder configuration information included in the moving image data (6) to define a condition for decoding the moving image data (6), decoder configuration information inserting means (4) for inserting the decoder configuration information into a plurality of predetermined positions in the moving image data (6) to generate moving image data, and moving image data output means (5) for outputting the generated moving image data as moving image data (8).

A video decoder is provided which can convert analog composite video signals into noise-suppressed luminance and color difference signals without increasing the system in size. From the A/D converted composite video data, luminance component data carrying the luminance component and color difference component data carrying the color difference component are acquired. Then, dithering is performed on each piece of the luminance component data and the color difference component data for output as digital luminance and color difference signals.

Provided are a method, system and program for fractionally shifting input data subject to a first transform process without first applying an inverse transformation by using a second transform process. The second transform process applies a transformed matrix to the transformed data. At least one transformed matrix is provided in non-volatile storage, wherein each transformed matrix is generated by applying the first transform process to a fractional shift matrix operator. The input data that was transformed using the first transform process is received and the at least one transformed matrix is applied to the transformed input data to generate transformed data that represents fractionally shifted transformed output data.

The present invention provides a method of supplementing a digital picture with a shorter delay time and less calculations. The padding method is applied to a picture having a great motion, and results in producing a prediction signal with small errors. The present invention also provides an apparatus using the same method. To be more specific about the method, in a digital picture data including picture information indicating an object, a picture is resolved into a plurality of regions adjoining with each other, and each of the insignificant sample value of a region containing the boundary of the object shape is supplemented (padded) by the values obtained from transforming of the significant pixels near to the insignificant pixels.

A recording apparatus for recording a motion image, wherein upon recording of the motion image, among a plurality of frames constructing the motion image, a still image group constructed by still images of a plurality of frames which are close with respect to time and related information showing a relation between the motion image and the still image group are written into a storing medium.

When an nth frame of encoded data is stored in a compressed-data storage area that stores 15 frames of encoded data, a target amount of code of the nth frame is decided so as to become a value that is the result of dividing the residual capacity of an area remaining in the compressed-data storage area by the number of remaining images to be stored in this remaining area. This makes it possible to prevent the target amount of code from becoming very large or very small. Even if there is a change in a photographic scene, therefore, a drastic change in image quality from frame to frame can be prevented.

An image processing system comprises an image processor configured to obtain a first image stream having a first frame rate and a second image stream having a second frame rate lower than the first frame rate, to recover additional frames for the second image stream based on existing frames of the first and second image streams, and to utilize the additional frames to provide an increased frame rate for the second image stream. Recovering additional frames for the second image stream based on existing frames of the first and second image streams illustratively comprises determining sets of one or more additional frames for insertion between respective pairs of consecutive existing frames in the second image stream in respective iterations.

The present invention relates to a method for measuring radio channel quality in a radio communication system. In the method a modulated signal is received over a communication channel. The modulated signal has been modulated by using modulation parameters. A decoder decodes (305) the modulated signal and forms decoded data. The decoder creates (306) a decoder performance indicator (PS) that depends on the decoded data. Then a radio channel quality indicator (RCQI) is created, the radio channel quality indicator being essentially independent of the modulation parameters.

An image processing apparatus is disclosed by which correction of convergence and correction of distortion of an image can be performed with a high degree of accuracy. Correction data to be used for correction of position errors of the three colors of red, green and blue obtained by an adjustment apparatus in advance are stored in a storage section. The stored correction data are outputted to a correction waveform outputting section through a control circuit when necessary. The correction waveform outputting section produces correction waveforms based on the correction data inputted thereto and outputs the correction waveforms to a clock signal generation circuit. The clock signal generation circuit generates clocks, and the video data of red, green and blue stored in the memory are read out in response to the clock signals.