Abstract: A method for detecting a video signal that represents an image sequence and exhibits linewise repeated video data comprises selecting a plurality of line groups each having a first, a second and a third line, which originate from two consecutive fields in the case of a field sequence and from one field in the case of a frame sequence. The method determines for each line group a first line-distance measure for a difference between video contents of the first and second lines and a second line-distance measure for a difference between video contents of the second and third lines. The method then interprets the first and second line-distance measures with regard to the presence of a significant difference between these line-distance measures.

Abstract: An image includes a plurality of image blocks each including a plurality of pixels and having an associated motion vector. The image is processed by selecting an image block and a corner region (E1x) located in a corner of the selected image block to provide a selected corner region. A plurality of adjacent image blocks located adjacent to the selected corner region are then selected from the plurality of image blocks. The motion vectors assigned to the adjacent image blocks are then compared to determine if the motion vectors form a homogeneous vector field. When the motion vectors of the adjacent image blocks form a homogeneous vector field, a motion vector for the corner region is generated from the motion vectors of the adjacent image blocks. When the motion vectors of the adjacent image blocks do not form a homogeneous vector field, the motion vector for the corner region is set equal to the motion vector of the image block.

Abstract: A method is described for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, to which respectively a significance measurement is assigned, wherein at least one of these test vectors is a motion vector of a further image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, and wherein the method covers: Determining a distance measurement for each test vector, Determining a modified distance measurement to each test vector depending on the distance measurement determined to this test vector and additionally at least on the significance measurement assigned to this test vector, Selecting one of the test vectors as motion vector depending on the modified distance measurements, Determining a new distance measurement of the test vector selected as motion vector depending on whether the selected motion vector meets at least one significance criterion, and assignin

Abstract: A method of selecting a motion vector for an image block of an image of an image sequence from a number of test vectors.

Abstract: A method for encoding first and second data words, which may represent differential data values (e.g., luminance and chrominance difference data values), onto an encoded data word includes: assigning a first code word to a first approximation value for a first data value, and assigning a second code word to second approximation value for a second data value; mapping the first and the second code words onto respective first and second data segments of the encoded data word; determining a first difference value between the first data value and the first approximation value and determining a second difference value between the second data value and the second approximation value; and at least partial mapping a first difference data word representing the first difference value and/or a second difference data word representing the second difference value onto at least one additional data segment of the encoded data word.

Abstract: The invention relates to a method for interpolating a pixel from an intermediate line of a first field of a sequence of interlaced fields.

Abstract: An image to be interpolated is subdivided into a number of image blocks and a motion estimation technique is implemented to provide at least one initial motion vector for each of the image blocks. A modified motion vector is generated for each image block based on the initial motion vectors assigned to the individual image blocks. At least one additional image block is determined through which the motion vector assigned to the given image block passes at least partially, and the modified motion vector is generated as a function of the initial motion vector that is assigned to this at least one additional image block.

Abstract: The invention relates to a method for rendering an image sequence. wherein an individual image is rendered by rendering monochromatic subimages in temporal succession. A subimage sequence obtained by temporal sequencing of the subimages is generated in motion-compensated fashion.

Abstract: Method for motion-vector-aided interpolation of a pixel of an intermediate image lying between two input images includes a first pixel being selected from a first field and a second pixel being selected from a second field using a first motion vector, and a third pixel being selected from the first field and a fourth pixel being selected from the second field using a second motion vector. Next, an interval specified by video information values of the first pixel and the second pixel or an interval specified by video information values of the third pixel and the fourth pixel is determined and the video information values are mixed such that the video information value of the pixel to be interpolated lies within this interval.

Abstract: A method is described for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, wherein at least one of these test vectors is a motion vector of a further image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, and wherein the method covers: Determining a distance measurement for each test vector, Determining a vector length of the test vectors and determining the test vector with the shortest vector length or a first subgroup of test vectors with the shortest vector lengths compared to the other test vectors, Determining a modified distance measurement to the shortest test vector or to the test vectors of the subgroup depending on the distance measurement determined to the respective test vector and depending on a length measurement, Comparing the modified distance measurement of the shortest motion vector or the modified distance measurement of the test

Abstract: A method is described for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, to which respectively a significance measurement is assigned, wherein at least one of these test vectors is a motion vector of a further image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, and wherein the method covers: Determining a distance measurement for each test vector, Determining a modified distance measurement to each test vector depending on the distance measurement determined to this test vector and additionally at least on the significance measurement assigned to this test vector, Selecting one of the test vectors as motion vector depending on the modified distance measurements, Determining a new distance measurement of the test vector selected as motion vector depending on whether the selected motion vector meets at least one significance criterion, and assign

Abstract: The invention relates to a method for interpolating a pixel from an intermediate line of a first field of a sequence of interlaced fields.

Abstract: The invention relates to a method for interpolating a pixel from an intermediate line of a first field of a sequence of interlaced fields.

Abstract: The invention relates to a method and a device for simultaneously representing at least a first and a second sequence of pictures (M, S) in an overall picture. The inventive method is characterised in that picture data belonging to a picture of the first sequence of pictures (M) is stored in the form of a first picture data signal in a first picture memory (SPM). Picture data belonging to a picture of the second sequence of pictures (S) is stored in the form of a second picture data signal in a second picture memory (SPS). The picture data of the first and second picture data memory is read out according to a periodic screen signal (RS), whereby phase shift (SHIFTM, SHIFTS, tx) of the screen signal (RS) can be adjusted according to the first and/or second picture data signal.

Abstract: A time-discrete picture signal is formed from an analog picture signal, such as a luminance signal or a chrominance signal. Corresponding to the time-discrete picture signal, a time-discrete filter signal is formed, specifically a so-called “peaking signal,” which has a sequence of peaking signal values, of which one value each is associated with one signal value of the time-discrete picture signal. The discrete peaking signal is formed by a digital peaking filter from the discrete picture signal or by an analog peaking filter from the analog picture signal during subsequent sampling of the analog peaking signal. The peaking filter increases the amplitude of selected frequency components of the picture signal.

Abstract: A device for correcting the phase of a vertically distorted digital picture receives picture data and a vertical phase correction signal, and assigns lines of the digital picture to a first half picture and to a second half picture. The lines of the second half picture are phase corrected with respect to the first half picture and the first and second half pictures are displayed sequentially. The phase correction is determined in response an increment signal that describes the change of an imaging factor in the veritcal direction of the digital picture on a line-by-line basis and a picture position signal indicative of whether the first half picture or the second half picture is being output.

Abstract: The invention relates to a method for rendering an image sequence. wherein an individual image is rendered by rendering monochromatic subimages in temporal succession. A subimage sequence obtained by temporal sequencing of the subimages is generated in motion-compensated fashion.

Abstract: A method for encoding first and second data words, which may represent differential data values (e.g., luminance and chrominance difference data values), onto an encoded data word includes determining a first approximation value, to which a first code word is assigned, for a first data value, and determining a second approximation value, to which a second code word is assigned, for a second data value; mapping the first and second code words onto first and second data segments, respectively, of the encoded data word; determining a first difference value between the first data value and the first approximation value and determining a second difference value between the second data value and the second approximation value; and at least partial mapping of a first difference data word representing the first difference value and/or a second difference data word representing the second difference value onto at least one additional data segment of the encoded data word.

Abstract: An image includes a plurality of image blocks each including a plurality of pixels and having an associated motion vector. The image is processed by selecting an image block and a corner region (E1x) located in a corner of the selected image block to provide a selected corner region. A plurality of adjacent image blocks located adjacent to the selected corner region are then selected from the plurality of image blocks. The motion vectors assigned to the adjacent image blocks are then compared to determine if the motion vectors form a homogeneous vector field. When the motion vectors of the adjacent image blocks form a homogeneous vector field, a motion vector for the corner region is generated from the motion vectors of the adjacent image blocks. When the motion vectors of the adjacent image blocks do not form a homogeneous vector field, the motion vector for the corner region is set equal to the motion vector of the image block.

Abstract: The circuit includes a motion detector including a first device for producing pixel motion signals, which have a first state for each pixel which is found to have moved and a second state for each pixel which is found to have been stationary, and a second device for correcting the pixel motion signals in order to produce motion values in such a manner that a state of a pixel which differs from matching states of adjacent pixels is ignored.