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| Number | Title | Issue Date |
| 8427712 | Exposure apparatuses and methods to compress exposure data A method to compress exposure data may include converting image data into a plurality of exposure data, generating new exposure data by combining part of the plurality of exposure data or by excluding part of the plurality of exposure data, and compressing the new e... | 04/23/2013 |
| 7366236 | Source adaptive system and method for 2D iDCT This invention discloses a fast two-dimensional inverse Discrete Cosine Transform (iDCT) that adapts to compressed video source statistics to reduce execution time. iDCT algorithms for sparse blocks eliminate calculations for some zero coefficients and are implement... | 04/29/2008 |
| 7116833 | Method of transmitting selected regions of interest of digital video data at selected resolutions A method of transmitting selected regions of interest of digital video data at selected resolutions, including: capturing digital video; compressing the digital video into a sequence of individual high resolution JPEG 2000 frames and simultaneously extracting from t... | 10/03/2006 |
| 7050645 | Image processing apparatus and image processing method The image processing apparatus transforms orthogonal transform coefficients into a predetermined number of bits for each spatial frequency, rearranges quantized data for each spatial frequency to an arrangement with spatial frequency band portions, thereby generates... | 05/23/2006 |
| 7031531 | Image encoding device and method therefor, image decoding apparatus and method therefor, and computer-readable recorded medium on which image encoding program and image decoding program are recorded An image coding apparatus corresponding to a standard scheme of binary image compression and having the compression efficiency of a gray scale image improved includes: a bit plane generator (303) dividing unitary image data into a plurality of bit planes dete... | 04/18/2006 |
| 6909811 | Image processing apparatus and method and storage medium storing steps realizing such method Hierarchical encoding techniques allowing a good compression efficiency and allowing to quickly recognize the outline of an image from a fraction of encoded data. In order to realize such techniques, an image processing apparatus has a generating unit for generating... | 06/21/2005 |
| 6778301 | Fast preview of CCITT-compressed documents A method of deriving a preview image from CCITT-compressed digital image data that represent an original image is disclosed. The method comprises receiving CCITT-compressed image data that represent an original image having Nr rows and Nc columns. Without decompress... | 08/17/2004 |
| 6738158 | Digital scanner for capturing and processing images The present invention generally relates to a digital scanner for scanning images. More specifically, the present invention is directed to a method and apparatus for accurately scanning documents and for processing digital data to provide digital images stored in mem... | 05/18/2004 |
| 6646756 | Printing apparatus and method which controls driving of a printing head according to received data A distinction apparatus of a printing apparatus distinguishes data compression rate according to each of the data transferred from a host computer, and a mode selection apparatus selects a printing mode according to slow printing velocity when data compre... | 11/11/2003 |
| 6583887 | Method and apparatus for data compression Compression apparatus is described that operates to select an optimum compression procedure to apply to received image data. The compression apparatus can be employed in a page printer having a print engine that must be provided with video data at a const... | 06/24/2003 |
| 6034782 | Adaptive compression for printer I/O channel A cable test application is run in the host computer to determine whether the PC to printer connection is able to maintain at least a predetermined speed of data transfer. The cable test provides an accurate measure of the true throughput of the I/O conne... | 03/07/2000 |
| 5880856 | Progressive image transmission using discrete wavelet transforms Disclosed herein is a method of storing and of progressively transferring a still image so that it can be conveniently previewed during the transfer and so that a user can terminate the transfer at an early stage if the image turns out to be undesirable. ... | 03/09/1999 |
| 5790264 | Information reproduction apparatus A memory and a counter are used to count and store the number of times the same block address extracted by a block detection section is read. A scan speed calculation section calculates a scan speed on the basis of the number of times the same block addre... | 08/04/1998 |
| 5734755 | JPEG/MPEG decoder-compatible optimized thresholding for image and video signal compression For encoding signals corresponding to still images or video sequences, respective standards known as JPEG and MPEG have been proposed. These standards are based on digital cosine transform (DCT) compression. For economy of transmission, DCT coefficients m... | 03/31/1998 |
| 5689346 | Image data processing system An Adaptive Discrete Cosine Transformation is widely used for orthogonally transforming image data. The number of adders necessary for sum-of-product operations in a matrix multiplication is reduced. A high speed matrix multiplication and a progressive im... | 11/18/1997 |
| 5031053 | Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clusters More efficent encoding/decoding in decomposing and recomposing a high resolution image is obtained by employing a unique pixel cluster arrangement. The pixel clusters of an image are classified as one of a plurality of classifications. A unique encoding/d... | 07/09/1991 |
| 4979049 | Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing its low resolution replica More efficient encoding/decoding in decomposing and recomposing a high resolution image is obtained by employing a unique prediction arrangement. The prediction arrangement determines whether high resolution pixels to be recomposed from low resolution pix... | 12/18/1990 |
| 4782400 | System for encoding or decoding analog video signals A coder/decoder system develops signals for printing half tone images. The invention uses a selected one of many dither matrices to provide a selected resolution of half tone images. Each dither matrix has n-by-n capacity. The coder and decoder includes a... | 11/01/1988 |
| 4750043 | Decoding apparatus for image code A decoder for two-dimensionally encoded image codes such as modified READ or modified READ codes ensures fast decoding operation by outputting reference codes in parallel while serially discriminating input codes and monitoring the relationship of both co... | 06/07/1988 |
| 4743973 | Encoding method for facsimile signal An encoding method for facsimile signal which is characterized by encoding data of a line selected out of the all lines of input facsimile signals in a manner of skipping over a predetermined number of lines according to a predetermined encoding method an... | 05/10/1988 |
| 4652935 | Graded facsimile image signal coding system A graded facsimile image signal coding system is disclosed which is provided with means for distributing a multi-graded facsimile picture signal, represented by 2n gradation levels, into n bit planes corresponding to n digits; initial encoding ... | 03/24/1987 |
| 4414580 | Progressive transmission of two-tone facsimile A method and apparatus for the transmission of two-tone pictures progressively in several stages. Progressive transmission enables a viewer to receive and utilize pictures in a small fraction of the normal transmission time. In a first stage, information ... | 11/08/1983 |
| 4264933 | Method and apparatus for facsimile recording The present invention discloses a technique of effecting recording on a recording medium by a plurality of recording elements, wherein recording density by the plurality of recording elements is varied. Further, the recording density by the plurality of r... | 04/28/1981 |
| 4150401 | Facsimile signal converter A facsimile signal converter for converting an input facsimile signal into an output facsimile signal having a scanning line density different from that of the input facsimile signal. A table circuit is provided for developing white and black states of ea... | 04/17/1979 |
| 4100580 | Facsimile system A facsimile system including a picture pick-up arrangement in which the picture information to be transmitted is processed in separate groups of picture elements. The information of a first number of adjacent lines and a second number of adjacent picture ... | 07/11/1978 |
| 4058674 | Graphic information compression method and system Graphic information is encoded in the form of an electrical pulse train, which is divided into a number of blocks of equal length. Only those blocks containing pulses are retained, and are combined for transmission with a decoding signal for subsequent sy... | 11/15/1977 |
