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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8139149 | Still image acquisition device, still image acquisition method, and image fluctuation correction device A still image acquisition device includes: a fluctuation detection unit (5) for detecting a horizontal or a vertical fluctuation generated in an imaging device; light refraction means (10A, 10B) for refracting light into an arbitrary direction; ... | 03/20/2012 |
| 7162094 | Frequency coefficient scanning paths for coding digital video content A method and system of transform-based encoding, decoding, and bitstream generation of digital video content. The digital video content comprises a stream of pictures, slices, or macroblocks which can each be intra, predicted or bi-predicted pictures. The pictures, ... | 01/09/2007 |
| 7095896 | Image encoding method and image decoding method The method includes the following units: a coefficient number detecting unit (109) for detecting the number of coefficients which has a value other than 0 for each block according to the generated coefficient, a coefficient number storing unit (110) fo... | 08/22/2006 |
| 7088867 | Frequency coefficient scanning paths for coding digital video content A method and system of transform-based encoding, decoding, and bitstream generation of digital video content. The digital video content comprises a stream of pictures, slices, or macroblocks which can each be intra, predicted or bi-predicted pictures. The pictures, ... | 08/08/2006 |
| 7068716 | Method and system for compressing groups of basic media data units The invention provides a method for compressing a group of basic media data units, the method comprising the steps of: (a) receiving the group of basic media data units; (b) for each basic media data unit of the group performing the steps of: (b1) partially decoding... | 06/27/2006 |
| 7006572 | Method and apparatus for decoding video bitstreams to reduced spatial resolutions A method decodes a video encoded as a compressed bitstream including frames constructed as blocks. The bitstream is variable length decoded and inverse quantized to determine motion vectors and DCT coefficients of the blocks of the bitstream. The DCT coefficients ar... | 02/28/2006 |
| 7003168 | Image compression and decompression based on an integer wavelet transform using a lifting scheme and a correction method A wavelet-based image compression system and method are presented. Compression is accomplished by performing a wavelet transformation of an input digital image. The resulting wavelet coefficients are compared to a threshold value. Coefficients falling below the thre... | 02/21/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6898328 | Method and apparatus for adaptive pixel estimation under high error rate conditions A method and apparatus for adaptive pixel estimation under high error rate conditions are disclosed. Classes are created, feasible classes are determined, and an optimal filter is applied to perform the pixel estimation. ... | 05/24/2005 |
| 6876704 | Apparatus and method for encoding and computing a discrete cosine transform using a butterfly processor An apparatus to determine a transform of a block of encoded data the block of encoded data comprising a plurality of data elements. An input register is configured to receive a predetermined quantity of data elements. At least one butterfly processor is coupled to t... | 04/05/2005 |
| 6778709 | Embedded block coding with optimized truncation A multi-layer embedded bitstream is generated from a subband decomposition by partitioning each subband of the decomposition into a plurality of blocks; and encoding the blocks of each subband. The blocks of each subband are coded independently of each other. Result... | 08/17/2004 |
| 6751354 | Methods and apparatuses for video segmentation, classification, and retrieval using image class statistical models Techniques for classifying video frames using statistical models of transform coefficients are disclosed. After optionally being decimated in time and space, image frames are transformed using a discrete cosine transform or Hadamard transform. The methods disclosed ... | 06/15/2004 |
| 6687824 | Digital image coding/decoding apparatus and method for recording and restoring a signature image using watermarking Digital image encoding/decoding apparatus and methods for recording a signature image using watermarking, and for restoring the recorded signature image are provided. The digital image coding apparatus for recording a signature image on a host image using... | 02/03/2004 |
| 6526177 | Generalized scalability for video coder based on video objects A video coding system that codes video objects as scalable video object layers. Data of each video object may be segregated into one or more layers. A base layer contains sufficient information to decode a basic representation of the video object. Enhance... | 02/25/2003 |
| 6415042 | Digital image coding/decoding apparatus and method for evaluating the quality of images transmitted using watermarking Digital image coding/decoding apparatus using watermarking, and methods thereof are provided. The digital image coding apparatus includes a first discrete wavelet transform portion for receiving a host image to be transmitted and performing discrete wavel... | 07/02/2002 |
| 6295380 | Object data processing apparatus, object data recording apparatus, data storage media, data structure for transmission An object data processing apparatus for decoding N pieces of coded data (N=positive integer) obtained by compressively coding N pieces of object data which constitute individual data to be recorded or transmitted and have a hierarchical structure, for eac... | 09/25/2001 |
| 6233356 | Generalized scalability for video coder based on video objects A video coding system that codes video objects as scalable video object layers. Data of each video object may be segregated into one or more layers. A base layer contains sufficient information to decode a basic representation of the video object. Enhance... | 05/15/2001 |
| 6226406 | Method and apparatus for hybrid sampling image verification A method and apparatus are disclosed for testing the accuracy of images generated by a computer graphics program. An output image created by a graphics program on a particular computer platform is verified by being compared to a reference image, also know... | 05/01/2001 |
| 6148111 | Parallel digital image compression system for exploiting zerotree redundancies in wavelet coefficients An image compression system for implementing a zerotree wavelet compression algorithm. The compression system uses a wavelet based coding system wh takes advantage of the correlation between insignificant coefficients at different scales. The compressio... | 11/14/2000 |
| 6100930 | Process and apparatus for performing wipes on compressed MPEG video bitstreams A method and apparatus for producing a wipe sequence on a display device from incoming compressed video bitstreams, accomplishes the wipe function processing entirely in the compressed domain of the compressed video bitstreams. The old and new video bitst... | 08/08/2000 |
| 5953460 | Image encoding method and an image encoder wherein a one-dimensional signal having the fastest energy conversion rate is selected and outputted as a coded signal An image signal is transformed by at least two different mathematical transformations to obtain at least two different transformed signals. A selected one of the transformed signals is quantized and coded, the selection being made so as to minimize the si... | 09/14/1999 |
| 5907641 | Digital image comparing system A system for comparing digital images, whereby a first and second data processing block receive respective data streams corresponding to a reference image and a detected image for comparison with the reference image. The data processing blocks detect refe... | 05/25/1999 |
| 5838265 | Method, encoder and decoder for resynchronization to a data stream which contains errors When digital data are being transmitted, parts of these data can be irreversibly destroyed by channel interference. Gaps produced in this way in the bit stream must be indicated and the respective decoder must be resynchronized. When encoding in accordanc... | 11/17/1998 |
| 5781561 | Encoding apparatus for hierarchically encoding image signal and decoding apparatus for decoding the image signal hierarchically encoded by the encoding apparatus Important quantized coefficients having absolute values which are higher than a threshold value are extracted from each of quantized coefficient streams into which a digital image signal is transformed, and an important quantized coefficient stream compos... | 07/14/1998 |
| 5751357 | Method and arrangement for coding and decoding a video data stream for all picture elements of the video data stream A run length coding (RLC) is implemented in a coder/decoder unit (CD) in a forward path (VP) and a run length decoding (RLD) is implemented at the beginning of reconstruction in a reconstruction path for an internal reconstruction of the video data stream... | 05/12/1998 |
| 5726711 | Intra-coded video frame data processing methods and apparatus Method and apparatus for generating a fully intra-coded video frame from a received progressive refresh bitstream representing a series of inter-coded video frames. Intra-coded macroblocks of received video frames are identified, selected, processed and s... | 03/10/1998 |
| 5654703 | Parallel data compression and decompression An apparatus and method for parallel data compression and decompression uses packing and unpacking of data which has multi-variable components, for example, relational multi-variable content data such as tristimulus color space data used in color hard cop... | 08/05/1997 |
| 5654706 | System for variable length decoding digital transmission data which has been compressed by selecting a scanning pattern A system for variable-length-coding and variable-length-decoding digital data divided into a block unit of a predetermined size which includes variable-length-coding each block data according to various scanning patterns, accumulating the various lengths ... | 08/05/1997 |
| 5636033 | Recoding of r-layer-coded image data to s-layer-coded image data Received sequentially encoded image data is converted into hierarchically encoded data having a resolution different from the sequentially encoded image data, and the converted encoded data is decoded with reference to an image of another layer. Received ... | 06/03/1997 |
| 5606543 | Recording multiplex coded signals on a disk recording medium with a priority switching means A coding apparatus codes signals of a plurality of sorts, multiplexes the coded signals, and records the coded and multiplexed signals on a disklike recording medium. A reproducing apparatus reproduces the recorded signals from the disklike recording medi... | 02/25/1997 |
| 5592251 | Method and apparatus for preventing image deflection in an optical system A camera having an image deflection prevention function and which shortens the time from depression of a release button to the commencement of an exposure action while sufficiently maintaining an image deflection correction stroke during the exposure. Aft... | 01/07/1997 |
| 5557419 | Apparatus for intermittently recording and/or reproducing a time-varying image An apparatus for intermittently recording or reproducing a time-varying image includes a buffer interposed between a compression-encoder unit and a recording processor or between a decoder and a reproducing processor, a buffer controller for monitoring th... | 09/17/1996 |
| 5521717 | Image processing apparatus and method therefor Received sequentially encoded image data is converted into hierarchically encoded data having a resolution different from the sequentially encoded image data, and the converted encoded data is decoded with reference to an image of another layer. Received ... | 05/28/1996 |
| 5515111 | Method and system for producing enhanced output signals There is provided a system and a method thereof for producing enhanced signals from an irreversible compression first processor in which there were performed irreversible compression encoding of signals and subsequently a compression decoding thereof. The... | 05/07/1996 |
| 5500678 | Optimized scanning of transform coefficients in video coding An improved scanning apparatus and method which allows for increased coding efficiency over conventional zigzag scans is disclosed. The invention advantageously allows for total compatibility with the MPEG-1 standard, and accomodates video sequences which... | 03/19/1996 |
| 5365271 | Information source encoding apparatus An information source encoding system in which overload noise and block noise are less recognized and quantizing overload and large quantizing distortion can reduced within an intra-frame mode encoding region even when intra-frame and inter-frame mode enc... | 11/15/1994 |
| 5329375 | Information recording/reproducing apparatus In the recording apparatus and reproducing apparatus employing variable length coding, a formatting which prevents propagation of error due to transmission route error is realized. The input quantized value is coded in variable length and recorded in a fi... | 07/12/1994 |
| 4718104 | Filter-subtract-decimate hierarchical pyramid signal analyzing and synthesizing technique A pyramid frequency analyzing technique is taught in which an input sampled temporal signal is convolved with a spatially localized, gradual rolloff kernel weighting function, which is subtracted from the input signal in each pyramid stage prior to the co... | 01/05/1988 |
| 4709394 | Multiplexed real-time pyramid signal processing system The amount of hardware required to implement a Burt Pyramid or an FSD (filter-subtract-decimate) pyramid analyzer (or synthesizer) stage of a sampled temporal signal representing an n-dimensional information component or (such as a video signal) is substa... | 11/24/1987 |
