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| Number | Title | Issue Date |
| 7391918 | Fixed, variable and adaptive bit rate data source encoding (compression) method According to the invention, quantization encoding is conducted using the probability density function of the source, enabling fixed, variable and adaptive rate encoding. To achieve adaptive encoding, an update is conducted with a new observation of the data source, ... | 06/24/2008 |
| 7324482 | Method and constructions for space-time codes for PSK constellations for spatial diversity in multiple-element antenna systems General binary design criteria for PSK-modulated space-time codes are provided. For linear binary PSK (BPSK) codes and quadrature PSK (QPSK) codes, the rank (i.e., binary projections) of the unmodulated code words, as binary matrices over the binary field, is used a... | 01/29/2008 |
| 7263511 | Creating user metric patterns including user notification Exemplary embodiments of the present invention include a method for creating a user metric pattern. Such embodiments typically include receiving, within the network, a plurality of disparate user metrics, determining that the plurality of disparate user metrics rece... | 08/28/2007 |
| 7251376 | Data compression engines and real-time wideband compressor for multi-dimensional data The present invention relates to a real-time wideband compressor for multi-dimensional data. The compressor comprises a plurality of compression engines for simultaneously compressing a plurality of data subsets of a set of input data vectors and providing compresse... | 07/31/2007 |
| 7236640 | Fixed, variable and adaptive bit rate data source encoding (compression) method According to the invention, quantization encoding is conducted using the probability density function of the source, enabling fixed, variable and adaptive rate encoding. To achieve adaptive encoding, an update is conducted with a new observation of the data source, ... | 06/26/2007 |
| 7158961 | Methods and apparatus for estimating similarity A similarity engine generates compact representations of objects called sketches. Sketches of different objects can be compared to determine the similarity between the two objects. The sketch for an object may be generated by creating a vector corresponding to the o... | 01/02/2007 |
| 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 |
| 6850639 | Color space quantization descriptor structure The present invention relates to a color space quantization descriptor structure for performing quantization of a color space in order to search a multimedia based on contents when multimedia feature information is color information, particularly when the multimedia... | 02/01/2005 |
| 6219382 | Method and apparatus for locating a caption-added frame in a moving picture signal Every frame represented by a moving picture signal is divided into blocks. Calculation is made as to a number of pixels forming portions of a caption in each of the blocks. The calculated number of pixels is compared with a threshold value. When the calcu... | 04/17/2001 |
| 5677986 | Vector quantizing apparatus A vector quantizing apparatus includes a first search section for obtaining an approximate vector X1 which is approximated to a desired vector R, a residual vector calculator for calculating a residual vector Rv from the desired vector R and the approxima... | 10/14/1997 |
| 5596659 | Preprocessing and postprocessing for vector quantization Improved proprecessing and postprocessing for vector quantization, for example, for encoding an image. In one embodiment, the luminosity of the vectors in an image are used to determine the codes for vector quantization. In another embodiment, a median fi... | 01/21/1997 |
| 5467134 | Method and system for compressing video data A method for compressing video movie data to a specified target size using intraframe and interframe compression schemes. In intraframe compression, a frame of the movie is compressed by comparing adjacent pixels within the same frame. In contrast, interf... | 11/14/1995 |
| 5150208 | Encoding apparatus A maximum value of each block after orthogonal transformation is detected, and an output word length after orthogonal transformation is controlled in accordance with the maximum value thus detected. In addition, a plurality of tables each having a plurali... | 09/22/1992 |
| 5136663 | Vector quantization image processing apparatus A vector quantization image processing apparatus includes a minimum value separation circuit, a normalization circuit, and a first codebook. By separating the minimum value of the inputted vector and normalizing at the maximum value, it is possible to red... | 08/04/1992 |
| 5068723 | Frame or sub-frame rate adaptive vector quantizer for moving images An adaptive vector quantization scheme suitable for packet video adapts to the varying characteristics of the actual images sequence being compressed. A large code book is divided into two sections, having higher and lower priority, representing common ch... | 11/26/1991 |
| 5067152 | Method and apparatus for vector quantization A method of and apparatus for vector quantizaiton operates on binary signal vectors. Each signal vector contains a plurality of sample elements of a signal to be compressed. Each of the signal vectors is hashed to generate a value identifying one of at le... | 11/19/1991 |
| 4930013 | Pattern processing A two dimensional pattern such as a movement matrix generated in an inter-frame video coder is classified by forming a weighted sum modulo x of a set of values representing the pattern. The values may be pattern element values, or quantised representation... | 05/29/1990 |
| 4862261 | Image signal compressing method by vector quantization A method of compressing image signals by vector quantization comprises the steps of dividing two-dimensional image signals into blocks B each comprising the signals at adjacent picture elements, selecting a vector that corresponds with the minimum distort... | 08/29/1989 |
| 4853778 | Method of compressing image signals using vector quantization A method of compressing image signals comprises the steps of dividing original image signals representing a two-dimensional image into blocks each of which is composed of a plurality of samples, converting the original image signals at respective picture ... | 08/01/1989 |
