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WO/1997/008900A1 |
Sequences of frames are encoded by first subdividing each frame into a plurality of blocks, each corresponding to at least one other block within at least one adjacent frame, to create a group of corresponding of blocks (51). A luminance...
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WO/1997/003520A2 |
It is an object of the invention to reduce the number of field memories for a converting apparatus for non-interlaced scanning. Three field memories (53 to 55), a Y/C separator and a motion detector are arranged on the converting apparat...
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WO/1997/001830A1 |
A video signal is converted into a coefficient signal of block coefficient signals for each frame in a video image. Each of the block coefficient signals represents the pixels in a pixel map block (420) with the coefficients in a hybrid ...
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WO/1997/001819A1 |
A video signal is converted into a coefficient signal for each frame in a video image. Each coefficient signal comprises block coefficient signals which represent the pixels in a pixel map block (420) in a pixel map (410) with the coeffi...
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WO/1996/042171A1 |
An apparatus for generating a sync signal of a data segment in a high definition television is disclosed including: means (41) for delaying and integrating received data segment signals in the period of the segment; means (42) for delayi...
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WO/1996/042170A1 |
A symbol timing recovery circuit and method of a digital television is disclosed including: an analog-to-digital converter (10) for sampling a received analog signal by a symbol clock to be converted to digital data; demodulator (20) for...
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WO/1996/037075A1 |
An interactive cable television system is disclosed which utilizes a standard cable television distribution network for simultaneously providing a plurality of viewers with an interactive television program comprising a plurality of sign...
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WO/1996/037071A2 |
Color video data is compressed by storing only the most frequently occurring colors in a block of pixel data. A minimum number of colors for the block is determined by consolidating comparatively close colors. Two comparatively close col...
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WO/1996/036185A1 |
The present invention relates to a method for the transmission of a color television signal, comprising the transmission of a luminance signal as a function of primary color signals and two color difference signals. It comprises, on the ...
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WO/1996/031054A1 |
Interlace scan PALplus signals are fed to a 133-line delay (32) which is a delay element of 133 lines. The output of the delay element is fed to field memories (23 and 25). The memory (23) is a first memory for one-field delay and the ou...
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WO/1996/028939A1 |
Color image compression and decompression is achieved by either spatially and chromatically multiplexing three digitized color planes, such a RGB (Red-Green-Blue) (22), into a digital array representative of a single digitized spatially-...
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WO/1996/025010A2 |
A method is described of encoding pixel colour values for a digital video image frame in which each different colour within the image is assigned a colour value. A predominant colour is identified for the image frame and, in a first embo...
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WO/1996/022655A1 |
Device for coding (100) and decoding (300) an extended definition video (EDTV) signal. The EDTV signal is composed of a first series of picture lines with a compatible video signal (Y, UV) and at least one second series of picture lines ...
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WO/1996/017474A1 |
An apparatus and method is provided for modulating and transmitting full-motion, television quality color video signals along with digital data signals over a pair of ordinary unshielded twisted pair telephone wires (UTP) without interfe...
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WO/1996/016505A2 |
A system and method for generating composite video signals in a computer are disclosed. Digital pixel data may be processed by software to form component video pixel data, which may include luminance and chrominance components. A chromin...
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WO/1996/016514A1 |
To achieve the simplest possible design of a circuit for decoding a PALplus video signal, a circuit of this type is characterized in that: a switching circuit (22) is provided for signal processing and coupled to a storage unit (23, 24) ...
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WO/1996/013936A1 |
In a method of decoding a data signal (WSS) having at least a startcode or sync word section (SC) and a data section (AR..R), the data signal is converted (ADC) into a sequence of multi-bit samples having at least a startcode or sync wor...
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WO/1996/013938A1 |
A method and apparatus are disclosed for coding of digital images for subsequent display in the form of overlaid image planes (F, B). The information stored for image features differs from one plane to another: for example only four diff...
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WO/1996/013126A1 |
Luminance components from multiple video signals are separated and compressed (151, 157). An output signal having sequential output horizontal line periods is formed and the compressed luminance components are inserted in the output hori...
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WO/1996/012374A1 |
A color television signal, digitized by a sampling clock asynchronous with respect to the television signal's horizontal synchronizing pulses, is applied to a dynamically programmable digital filter (40) which upsamples or dowsamples the...
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WO/1996/008930A1 |
A digital color video signal is subsampled into a special YUV block format that arranges the data in small groupings of interleaved V, U and Y values in a left-to-right, top-to-bottom sequence across a video frame. This format results in...
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WO/1996/007276A1 |
A component of an NTSC color television signal, e.g. the luminance component, is digitally sampled by sampling an input signal with a mean frequency related to the color subcarrier frequency, e.g. 2fsc, and changing the sampling phase be...
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WO/1996/003840A1 |
The method and apparatus for generating a reference video sequence of images includes performing a grid analysis of each of the frames of the video sequence, assigning a color value to that frame, calculating the difference in total colo...
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WO/1996/001022A1 |
The invention provides a system for recording and displaying a time sequential scene on a computer (16). The digital camera (12) transmits a sequence of digital image frames to the timer (14) representative of the image of a body passing...
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WO/1995/035626A1 |
A digital video signal processing system receives encoded packets of data representing video image information in compressed form. A video decoder (1509) and an associated video RAM (1513) are used to decode and decompress the video pack...
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WO/1995/035625A1 |
A digital video signal processing system receives encoded packets of data representing video image information in compressed form. A video decoder (1509) and an associated video RAM (1513) are used to decode and decompress the video pack...
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WO/1995/033337A1 |
A method for specifying a video window's boundary coordinates (98) directly from a multi-color video signal (20) to separate the signals high (32) and low (35) variance components. The method converts the analog multi-color video signal ...
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WO/1995/031071A1 |
The present invention provides methods and apparatus for representing visual images in compressed digital form. A series of digital images is provided to a random access memory and compressed one frame at a time. The compressor of the pr...
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WO/1995/030308A1 |
Motion video may be imported into a personal or portable computer through an I/O port having a limited data bandwidth, such as a PCMCIA interface. Motion video data is compressed by sub-sampling both luminance and chrominance difference ...
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WO/1995/027362A2 |
In a method of converting an interlaced video signal (IS) into an output sequentially scanned video (SSS), a first sequentially scanned video signal (SS1) is furnished in dependence upon the interlaced video signal (IS). Subsequently, a ...
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WO/1995/023481A1 |
The signals received by the three cameras of any color video system are determined by the reflectance properties of the objects in the scene and the spectral distribution function of the illuminant. Since the information of interest to t...
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WO/1995/023457A1 |
In compression of palletized images of an M-ary alphabet are binarized based on a context model of the input data, where the binarization is selected to provide good compression by a binary encoder. The particular binarization is determi...
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WO/1995/022869A1 |
The invention relates to a method and device for generating compressed colour video scenes. The problem with conventional methods and devices of this type is that each scene has a large number of colour values. The large number of colour...
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WO/1995/022229A1 |
An apparatus for interpolating an image comprises an image receiving/displaying system (70) which receives image data converted into image signals by a CCD camera (40) and transmitted through a communication network (60), and an image mo...
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WO/1995/019683A1 |
A method and apparatus for performing video image compression and decompression are disclosed. The video image compression is performed using boundary-spline-wavelet decomposition, in which the wavelets applied to sample locations at the...
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WO/1995/019684A1 |
A multimode scan converter includes a delay element (33) for delaying one horizontal line of video signal and selectively redisplaying that line. A multiplexer (30) is arranged to selectively provide either luminance signal or chrominanc...
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WO/1995/015650A1 |
In a digital television signal processing system, a special codeword, a Packet Alignment Flag (PAF) (14), is inserted into an MPEG codeword bitstream to signify the presence of a Group of Pictures (GOP). The PAF immediately precedes a Pi...
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WO/1995/015660A1 |
A video system for processing compressed video data into composite data, the composite video data corresponding to a standard composite video signal type selected from a plurality of standard types including at least one of an NTSC compo...
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WO/1995/015652A1 |
In a digital television signal processing system, a special codeword, a Packet Alignment Flag (PAF) (14), is inserted into an MPEG codeword bitstream to signify the presence of a Group of Pictures (GOP). The PAF immediately precedes a Pi...
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WO/1995/015651A1 |
In a digital television signal processing system (10, 12 and 14-18), a special codeword, a Packet Alignement Flag (PAF), is inserted into an MPEG codeword bitstream to signify the presence of a Group of Pictures (GOP). The PAF immediatel...
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WO/1995/015062A1 |
A sequential video imaging system uses a video sensor (15) having full frame whereby image data is moved from sensor image elements to a video amplifier (16). The object being viewed is sequentially illuminated with colored light sources...
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WO/1995/015061A1 |
A sequential video imaging system uses a video sensor (15) having interline architecture whereby image data is moved from sensor elements to adjacent interlined storage elements. The object being viewed is sequentially illuminated with c...
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WO/1995/014349A1 |
Two-dimensional data structures are represented by quadtree codes with embedded Walsh transform coefficients. The quadtree code permits both variable block size inherent in quadtrees, and the calculational simplicity of Walsh transform d...
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WO/1995/014350A1 |
Two dimensional data structures are represented by quadtree codes with embedded Walsh transform coefficients. The quadtree code permits both variable block size inherent in quadtrees, and the calculational simplicity of Walsh transform d...
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WO/1995/012288A1 |
A novel synchronization scheme for use in connection with digital signal video decoder (58) comprises a pre-parser (52), a channel buffer (54), and a post-parser (56). The pre-parser (52) synchronizes to a multiplexed system bitstream re...
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WO/1995/008240A2 |
A method and apparatus are disclosed for converting between samples of an input signal and an encoded signal composed of a plurality of component signals each representing a characteristic of the input signal in a different domain. The i...
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WO/1995/004434A1 |
Color image compression and decompression is achieved by either spatially or chromatically multiplexing three digitized color planes, into a digital array representative of a single digitized spatially- and chromatically-multiplexed plan...
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WO/1994/030002A1 |
A system and method of compressing a digital image perform a maximum quantization of the image into two colors, followed by an iterative incremental increase in detail until a desired level of compression is attained. The iterative incre...
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WO/1994/028678A1 |
In an extended television signal comprising signalling bits for conveying control information to control an extended decoder, the signalling bits comprise a start code and data bits, the start code's main lobe of spectral energy resides ...
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WO/1994/028680A1 |
A vector quantization method and apparatus which processes signal vectors constructed from digital image data. A digital video stream (38) is treated as a sequence of images, each represented by a rectangular array of pixels. The pixels ...
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