Abstract: An apparatus for processing information data and playback description data indicating a playback procedure of the information data newly generates modified information data by using part of the information data, modifies the playback procedure such that the modified information data is played back instead of the part of the information data, and modifies the content of the playback description data in accordance with the modified playback procedure. The playback description data includes playback time information relating to a playback time of the information data. The apparatus modifies the playback time information in accordance with the modified playback procedure.

Abstract: With the object of effecting color management of dynamic image data obtained under a variety of image capture conditions, when dynamic image data is recorded on a medium by means of a recording head, together with the dynamic image data, conversion characteristic data for the purpose of converting the dynamic image data to another color space is recorded on the medium.

Abstract: An image coding apparatus comprises a divider for dividing an image into a plurality of coding blocks overlapped to each other, and a coder for coding them for each of the coding blocks divided by the divider.

Abstract: Where a recording medium recorded on a slave side apparatus is reproduced, it has been made possible to perform on site modification processing identical to that conducted at a master side apparatus, by reproducing, the primary information added with parity symbol for error correction from the recording medium on which the primary information is recorded, correcting the symbol error of primary information reproduced at the reproducing unit using the reproduced parity symbol, producing the flag which indicates the production of an uncorrectable symbol error in one unit of a block of a specified amount of information and thus outputting the modification information corresponding to the primary information and the flag and forming, at the slave side, the parity symbol for correction of error of primary information output at the master side apparatus and recording the primary information with the parity symbol and modification information, on the same recording medium.

Abstract: A recording/reproducing apparatus for recording encoded data on a recording medium by time sequentially and independently recording normal reproduction data and specific reproduction data contained in the encoded data, the normal reproduction data and specific reproduction data including decode control information. The recording/reproducing apparatus includes a detection circuit for detecting the decode control information from reproduced data in a specific reproduction mode and in a normal reproduction mode, and a memory circuit for storing the control information detected by the detection circuit.

Abstract: The present invention provides an image signal reproducing apparatus, in which code errors are concealed by using only pixel data corresponding to parts of the pixels of respective two or more adjacent blocks both of which are adjacent to a subject block to be concealed in the same frame, to conceal the code errors without disturbing the image even if the image is rapidly moving and all of pixels included in the block are not available.

Abstract: An image processor which provides a color space conversion characteristic suitable for an image includes a transfer unit which transfers digital color image data representing a desired image input by an image input unit and having a color space depending on the image input unit, and extraction unit which extracts a color space conversion characteristic used to convert the color space depending on the image input unit into another color space. The transfer unit transfers the digital color image data having the color space depending on the image input unit and the color space conversion characteristic.

Abstract: In transferring image data between a first memory for storing image data in a first sequence and inputting and outputting the image data from and to a first data bus and a second memory for storing image data in a second sequence different from the first sequence and inputting and outputting the image data from and to a second data bus, the permission and the inhibition of the writing of the transferred image data to a transfer destination are controlled and the error detection/correction encoding/decoding is effected during the transfer to facilitate the address management and permit high speed processing of the image data.

Abstract: A coding apparatus has a quantizer selected from a quantizer group and being used for coding inputted data, a first code amount calculation circuit for calculating a code amount of codes of the inputted data quantized by the quantizer, a prediction circuit for predicting a quantizer among the quantizer group capable of obtaining a target code amount, in accordance with the code amount calculated by the first code amount calculation circuit, the quantizer predicted by the prediction circuit for quantizing the inputted data, a second code amount calculation circuit for calculating a code amount of codes of the inputted data quantized by the predicted quantizer, and a comparator circuit for comparing the code amount calculated by the second code amount calculation circuit with the target code amount.

Abstract: A plurality of (n-p)-bit non-correlation data having no correlation between data each are added with a common p-bit data to thereby obtain a plurality of n-bit data having data correlation. The plurality of n-bit correlation data are processed using data correlation therebetween so that even a data train having no correlation can be processed effectively. A plurality of m-bit non-correlation data having no correlation between data are separated into a plurality of blocks including (n-p)-bit data and n-bit data. A p bit among the separated n-bit data is added to the separated (n-p)-bit data to thereby obtain a plurality of n-bit data having data correlation, in both cases n and m being an integer more than 2 and p is an integer smaller than n.

Abstract: An apparatus for reproducing video signals from the recording medium in which the video signals to which the control information pertaining to the image plane corresponding to every image plane is added are previously recorded. Upon reproduction of the video signals in accordance with an array pattern of the image plane different from the pattern used at the time of recording, at least a portion of the control information added to the video signals reproduced by the reproducing apparatus is changed into other information in accordance with the above-mentioned pattern to obtain the control information used for processing the video signals, thereby allowing an excellent image plane to be obtained.

Abstract: In an image information transmitting system of this invention, an image information signal constituted by a plurality of data constituting one frame is input. A plurality of pixel data blocks each consisting of a predetermined number of pixel data are formed from the input image information signal. Dynamic range information data associated with dynamic ranges of values of the pixel data constituting each pixel data block are formed in units of the plurality of pixel blocks. The pixel data constituting the pixel data block is coded using the dynamic range information data to form a plurality of coded data in units of pixel data blocks. The dynamic range information data and the coded data are sent onto a transmission line. These transmitted data are received, and a data portion of the dynamic range information data and the coded data which has an error is interpolated. High-quality image information can be efficiently transmitted.

Abstract: A plurality of (n-p)-bit non-correlation data having no correlation between data each are added with a common p-bit data to thereby obtain a plurality of n-bit data having data correlation. The plurality of n-bit correlation data are processed using data correlation therebetween so that even a data train having no correlation can be processed effectively. A plurality of m-bit non-correlation data having no correlation between data are separated into a plurality of blocks including (n-p)-bit data and n-bit data. A p bit among the separated n-bit data is added to the separated (n-p)-bit data to thereby obtain a plurality of n-bit data having data correlation, in both cases n and m being an integer more than 2 and p is an integer smaller than n.

Abstract: A decoding device used in a predictive coding method includes a replacement circuit for replacing a decoded value corresponding to an encoded code having an uncorrectable error with the decoded value of the immediately preceding sample, and decoding of the succeeding sample is performed according to the decoded value output from the replacement circuit.

Abstract: An image signal decoding apparatus for decoding a transmitted image information signal into an original image signal: wherein a one frame image signal constructed of a plurality of image signals is divided into a plurality of blocks each constructed of a plurality of image signals; a block characteristic information signal and a coded information signal are received on a block unit (block-by-block) basis; and in accordance with a decision result by a motion decision circuit, either the image signals in another block corresponding to the same image in a block which was decided as being incapable of being decoded into original image signals, or the image signals of another block corresponding to a different image in the block decided as being incapable of being decided, are selected; and the selected image signals are interpolated as interpolation image signals. Any image motion can therefore be detected at once, and an adaptive interpolation can be effected in accordance with the image motion information.

Abstract: An apparatus for restoring an original image signal from a transmitted image information signal formed by dividing one picture amount of image signal composed of a plurality of picture element signals into a plurality of blocks each composed of a plurality of picture element signals and high-efficiently coding, for every block, the plurality of picture element signals constituting a respective one of the plurality of divided blocks is arranged to judge whether the picture element signals in each block are restorable or not on the basis of the inputted image information signal, to detect the presence or absence of motion in an image represented by the picture element signals of a block in which the picture element signals have been judged not to be unrestorable, to select either the picture element signals of a block belonging to the same picture as the unrestorable picture element signal block or the picture element signals of a block belonging to another picture according to a result of detection, and to out

Abstract: A video signal processing device has a sampling unit for sampling a luminance signal and two types of color difference signals respectively contained in a video signal.

Abstract: An image information transmission apparatus of this invention encodes and transmits image information. An image information signal of one frame consisting of a plurality of pixel data is divided into a plurality of blocks each consisting of a predetermined number of pixel data. At least two reference value data associated with a dynamic range of levels of the pixel data constituting each of the divided blocks, and distribution state data associated with a distribution state thereof are formed. Each pixel data constituting the block is encoded on the basis of the formed reference value data and the formed distribution state data to obtain encoded data. A transmission data series is formed and transmitted using the formed reference value data, the formed distribution state data, and the encoded data as transmission units. Therefore, the image information signal can be highly effectively transmitted with minimum image quality degradation caused by encoding.

Abstract: There is provided a color video signal processing device in which pixels are thinned out for a whole picture plane with respect to each of two kinds of digital color difference signals in accordance with a predetermined role. The encoding is executed on a unit basis of a block consisting of (n.times.m) samples where (n and m are integers no less than 2) which are formed with respect to each of the two kinds of color difference signals whose pixels have been thinned out or a block consisting of (n.times.m) samples formed so as to include both of the two kinds of color difference signals whose pixels had been thinned out. The data compression is executed on a block unit basis.

Abstract: An information signal recording and/or reproducing apparatus is arranged to designate first and second positions of a tape-shaped recording medium, to store first information concerned with a time interval between the first and second positions, to detect the position on the tape-shaped recording medium of an information signal recording and/or reproducing device, to obtain second information concerned with a time interval between the detected position and the first position, to compute a ratio between the first information and the second information, and to display the result of computation.