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| Number | Title | Issue Date |
| 7414757 | Method for compressing printing hint data sent to a printer There is disclosed in embodiments methods relating to the compression of printing hints. The method in embodiments generates a first set of image pixels having corresponding printing hints. The printing hints are then adjusted to produce a second set of image pixels... | 08/19/2008 |
| 7333544 | Lossless image encoding/decoding method and apparatus using inter-color plane prediction A lossless image encoding/decoding method and apparatus. The lossless color image encoding apparatus includes a motion prediction image generator estimating a motion between a previous image and a current image and outputting a corresponding prediction image, a resi... | 02/19/2008 |
| 7308150 | Image processing apparatus To provide an image coding apparatus that can generate a code that can be decoded by a general decoding apparatus while attaining a high coding speed. As a result of processing in a plurality of prediction units 21, a control unit 11 generates a predic... | 12/11/2007 |
| 7283265 | Raster data compression apparatus and method A plurality of patterns such as solid patterns, edge patterns, half-tone patterns, and verbatim data are losslessly represented in a compressed raster data stream. A pattern selection module selects among the various patterns to provide the best combination of lossl... | 10/16/2007 |
| 7260275 | Image processing device, image processing program and image composing method An image processing device, an image processing program and an image processing method for forming a composite image by superimposing an overlay image on a base image. Fixed length compressed image of the base image fixed length compressed data of the overlay image ... | 08/21/2007 |
| 7224844 | Entropy coding apparatus For the entropy coding of image data after subjected to orthogonal transforation and quantization, a plurality of entropy coding units are provided in parallel. The plurality of entropy coding units can be operated efficiently and the entropy coding can be executed ... | 05/29/2007 |
| RE39645 | Compressed image decompressing device An image processing device which processes a portion of the decompression process including a lot of comparatively complex operations like an inverse discrete cosine transform by software with using a high-performance, general-purpose processor capable of parallel p... | 05/22/2007 |
| 7209266 | Image processing apparatus Without repeating compression/decompression operations, an editing process such as rotation can be executed using first compression data, and second compression data, whose compression ratio is increased, can be stored in a hard disk drive. ... | 04/24/2007 |
| 7197721 | Weight compression/decompression system According to some embodiments, provided are a pseudo-random sequence generator to generate a pseudo-random sequence of data values, a decoder to receive compressed weight values and to generate decompressed weight values, and a weighting unit to receive the pseudo-r... | 03/27/2007 |
| 7177478 | Image data compression Two-dimensional blocks of line-work image data are subjected to: fractal reordering; run length encoding of the pixel values of the fractal re-ordered data, index encoding of the run length encoded pixel values; and entropy encoding of the index encoded pixel values... | 02/13/2007 |
| 7173738 | Method of producing traps in a print page Traps are produced at color boundaries in a print page that is present in the form of run-length encoded image data, by way of distance mapping. Distances of the run lengths to an adjacent color are determined without decoding the run lengths into a pixel matrix, an... | 02/06/2007 |
| 7171444 | Remote desktop protocol compression system Embodiments of the present invention are directed to a remote desktop communication protocol that includes spatial and temporal compression techniques. Multimedia presentation data is generated at a server from a source. A compression facility modifies the presentat... | 01/30/2007 |
| 7167259 | System and method for merging line work objects using tokenization and selective compression A method, apparatus, and information bearing medium for merging display items in encoded form involve providing display items to be merged in an encoded format, such as a run length encoded format (e.g., modified enhanced run length encoded format). The display item... | 01/23/2007 |
| 7164505 | Edge delta runlength expander unit for bi-level graphics Edge delta runlength (EDRL) compression algorithms may be employed to compress bi-level black print data, such as data representing text. A printer capable of rapidly decoding the compressed EDRL data includes a decoding circuit to produce delta signals. An edge cal... | 01/16/2007 |
| 7154420 | Image coding apparatus and method thereof and coded image decoding apparatus and method thereof In order to decrease a required memory capacity of a line memory and to efficiently compress an image by coding, even when character information is contained in a high-resolution image, each time the block of an image that is equally divided into M (M: an arbitrary ... | 12/26/2006 |
| 7145696 | Print data compression method and printer driver A printer driver software product is provided for execution by a computer to produce compressed page data corresponding to a page layout. The driver includes instructions to generate continuous-tone data and bi-level text and black graphics data from print data corr... | 12/05/2006 |
| 7099040 | Method for enabling a client to specify the characteristics of an image to be downloaded from a server A method for serving an image from a server to a client, e.g., a computer having a browser or other graphics viewing engine. The user of the client first specifies a set of one or more bitmap characteristics for an image transfer, with at least one of the bitmap cha... | 08/29/2006 |
| 7085020 | Raster data compression apparatus and method A plurality of patterns such as half-tone patterns, solid patterns, edge patterns, and verbatim data are losslessly represented in a compressed raster data stream. A pattern selection module selects among the various patterns to provide the best combination of lossl... | 08/01/2006 |
| 7082479 | System and method for maintaining synchronized data transfer using a plurality of different control words individually indicative of the same single event A method and apparatus for the transmission of multiple control characters of the same type to a receiver to improve the retention of transmitter to receiver synchronization in a noisy environment having receiver code that is less complex and does not require an inc... | 07/25/2006 |
| 7076109 | System and method of automatically determining the dominant periodicity in sequential binary data A system and associated method automatically and very rapidly determine the dominant periodicity in sequential binary data. The method incorporates a fast binary autocorrelation function used to discover the dominant periodicity in a sequential binary signal, and ex... | 07/11/2006 |
| 7068398 | System and method for efficient tile generation from complex raster data A system and method for accepting raster data from a Postscript or equivalent image data generator, identifying portions of the raster image which contain continuous tone data and linework data, dividing those portions into separate tiles and compressing the data wi... | 06/27/2006 |
| 7062094 | System and method for lossless data transmission A method for losslessly transmitting data is provided. The data is separated into two or more portions and the second portion is subtracted from the first portion to find a difference. The first portion and the difference are transmitted, and then the second portion... | 06/13/2006 |
| 7062096 | Apparatus and method for performing bitplane coding with reordering in a fine granularity scalability coding system An apparatus and method for performing bitplane coding with reordering, that may be used in a Fine Granularity Scalability (FGS) system. The apparatus and method reorder coefficients each time after a bitplane is coded. By reordering, the apparatus and method separa... | 06/13/2006 |
| 7046387 | Efficient coding of color images including monochrome images A device for processing images includes a compressing/coding unit which encodes image data including a plurality of color components to produce fixed-length codes, a memory unit which stores therein the codes produced by the compressing/coding unit, a distribution-m... | 05/16/2006 |
| 7027525 | Digital transmission method for bandwidth and bit rate flexibility The invention relates to AC coding. The phase angle or the duration of pulses are marked by half-periods or periods and are then provided as stages. The aim of the present invention is to flexibly adjust the bandwidths and bit rates. The number of filler elements th... | 04/11/2006 |
| 6992788 | Image processing apparatus and method, and storage medium The present invention efficiently compresses image data, and stores and manages the compressed data. Image data is compressed in tile unit having predetermined pixels and data packing is performed. The compressed data is compared with compressed data of a preceding ... | 01/31/2006 |
| 6961475 | Context model access to memory based on run and skip counts and context model skipping A method and apparatus for coding and decoding information is described. In one embodiment, the apparatus comprises a memory and decoding hardware. The memory stores run counts and/or skip counts and the decoding hardware decodes a run count and/or a skip count obta... | 11/01/2005 |
| 6912320 | Data decompressing method, data decompressing unit, and computer-readable storage medium storing data decompressing program Disclosed herein is a method for decompressing compressed data. First, a table is prepared in which the number of bits, consecutively present to the right of the certain bit and having the same color as the certain bit, is listed. Then, a predetermined number of ref... | 06/28/2005 |
| 6850647 | System, method and article of manufacture for decompressing digital camera sensor data The present invention includes a system, method, and article of manufacture for decompressing a bit stream of compressed data representing a plurality of image blocks. This includes a two-step method of processing both a DC code and a plurality of AC codes. With res... | 02/01/2005 |
| 6721456 | Color image data and control bit compression scheme with run length encoding A method of compressing pixel information is described. The pixel data is received in a data stream and compressed into a compressed data format by identifying a run of consecutive bytes of the data stream based on the similarity of the consecutive data bytes in the... | 04/13/2004 |
| 6696992 | Efficient data encoding and decoding processes A data encoding and decoding system that comprises a composite fixed-variable-length coding process and an offset-difference coding process for improving data compression performance. A composite fixed-variable-length coding process encodes an input data ... | 02/24/2004 |
| 6674912 | Data compression processing method and apparatus The present invention provides a high speed MMR compression processing method by reducing the number of times of repeating a process of finding the positions of changing pixels a1, a2, b1, and b2. According to this method, first, a bit string correspondin... | 01/06/2004 |
| 6653954 | System and method for efficient data compression A system and method that efficiently compresses data sets that contain one or more repetitive data values. Substitute symbols represent repeated data sequences in the compressed data output. Data sequences that terminate with one or more of a particular v... | 11/25/2003 |
| 6636642 | Image coding device, image decoding device, image coding/decoding device and image coding/decoding method To realize image coding/decoding device that can compress an input multivalued image with high compression efficiency, the following measures are taken. First and second predictors predict the value of a target pixel based upon image data according to res... | 10/21/2003 |
| 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 |
| 6577768 | Coding method, code converting method, code converting apparatus, and image forming apparatus This invention relates to a coding method, code converting method and apparatus, and image forming apparatus and, more particularly, to a coding method, code converting method and apparatus, and image forming apparatus capable of high-speed conversion dat... | 06/10/2003 |
| 6501856 | Scheme for extraction and recognition of telop characters from video data A scheme for detecting telop character displaying frames in video image which is capable of suppressing erroneous detection of frames without telop characters due to instability of image features is disclosed. In this scheme, each input frame constituting... | 12/31/2002 |
| 6484142 | Encoder using Huffman codes An encoder of the present invention includes: G storage sections for storing G groups of data; a selection section for selecting one of H Huffman codebooks having codebook numbers for each of the groups of data; G encoding sections Huffman-encoding the G ... | 11/19/2002 |
| 6421144 | Picture encoding apparatus and method A picture encoding apparatus and the method in which the quantization step width of the lower hierarchy data having a resolution higher than that of the upper hierarchy data is determined for each predetermined block of respective hierarchy data based on ... | 07/16/2002 |
| 6335801 | Facsimile apparatus for transmitting color image data displayed according to combination of specific codewords With facsimile apparatuses wherein color image data is coded, a facsimile on a calling side codes image data by replacing the image data with a codeword indicative of a white run-length or a black run-length, represents color information by combining spec... | 01/01/2002 |
