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7391535 |
Raster image processing
In one embodiment, a raster image processor, which may be part of a printing device or configured as a separate device, includes a processor to parse a print ready file, a rasterizer to translate...
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7372600 |
Color facsimile device with data recompressing capability
JPEG data is efficiently recompressed and transmitted to a remote color facsimile device. Before transmission of recompressed JPEG data, an anticipated transmission time is displayed for enabling...
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7289245 |
Color facsimile device capable of transmitting color image information represented in appropriate color space through multiple communication channels
A color facsimile device capable of transmitting color image information through multiple communication methods, such as G3, G4, T.37, and T.38, which can convert color image information into that...
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7271923 |
Image processing using processing by bands and fixed-size work buffer
A high-quality image processing apparatus capable of performing image transfer processing using a predetermined work buffer even if different decoding methods are used, without physically...
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7245405 |
Method and system for performing stateless compression of messages
An approach for providing stateless compression is disclosed. A message (such as an HTTP (HyperText Transfer Protocol) GET request message or a Domain Name Service (DNS) message) is received from a...
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7230744 |
Performance of a multi-stage service within an information technology network
A multi-stage or process operation, such as the printing of a document from a data file in the form of a word processing document may be performed either by passing the document directly along a...
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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...
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7209255 |
Print data transfer method for reducing first print time
A method is provided for transferring print data from a host computer to a printer connected to the host. According to the method, a transfer rate determiner of the host determines the data...
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7151616 |
Facsimile apparatus, control method of facsimile apparatus, and computer-readable memory medium storing control program for facsimile apparatus
Original sheets in which both-side image information and one-side image information exist mixedly can be efficiently and certainly transmitted without an erroneous operation. A CPU discriminates...
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7139428 |
Image encoder, image encoding method, recording medium and computer data signal embodied in a carrier wave
A processor performs layout analysis, and classifies pieces of bitmap data into a character area and a picture area. The processor divides each of the character area and the picture area into a...
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7111556 |
Printing system, print request terminal, compression algorithm selecting program and printing method
A printing system is provided suitable for reducing a printing time. A client apparatus acquires document data being edited during an editing operation by an application, creates print data for...
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7092578 |
Signaling adaptive-quantization matrices in JPEG using end-of-block codes
Previously-unused slots in a Huffman code table associated with a Joint Photographic Experts Group (JPEG) image file are associated with various quantization matrices (Q matrices) that are used to...
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7088463 |
Binary data transmission over an image data channel
A method of sending binary data over an image data channel. The binary data is encoded into an encoded linear matrix image, and the encoded linear matrix image is transmitted over the image data...
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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,...
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7016076 |
Image communication apparatus and method
Color facsimile communication uses image data obtained by JPEG-compressing data having a CIE Lab color space. To attach a JPEG image to e-mail, image data obtained by JPEG-compressing data having...
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6947160 |
Network facsimile apparatus and channel selecting method
The present invention selects a channel to be used in facsimile-transmitting image information included in e-mail subjected to relay request in accordance with channel selection information...
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6864997 |
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...
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6807309 |
Linear list compression
Methods, apparatus, and computer readable medium for compressing connected component objects ( 300 ) of bi-level images. The compression apparatus ( 204 ) can take various forms including apparatus...
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6804401 |
Method for compressing digital documents with control of image quality subject to multiple compression rate constraints
A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and...
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6785014 |
Facsimile apparatus
There is provided a facsimile apparatus which transmits image data so that the image quality level of the received image can be kept in a range appropriate to the transmission signal rate without...
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6738087 |
Method and system for transferring live video pictures from a video camera to a remote video displayer via a conventional telephone line
A method for transferring live video signals from a video camera of a local system to a remote video-display system via low-bandwidth communication lines is disclosed. The method is especially...
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6731814 |
Method for compressing digital documents with control of image quality and compression rate
A method and apparatus for compressing and decompressing electronic documents, with maximum intradocument independence, and maximum flexibility in optimization of compression modes. The method...
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6711296 |
Apparatus for performing loss-less compression-coding of adaptive evolution type on image data
An image coding apparatus including a context generator configured to select a reference pixel that has been coded in image data to generate a context formed of the selected reference pixel, an...
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6704467 |
Image editing with block selection
Composing image data representing an original image in an image processing device, the image processing device having an input device and a display device, including performing a block selection...
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6650794 |
Digital multifunctional apparatus and data terminal apparatus connected therewith
A digital multifunctional apparatus includes a printer, a scanner and a memory. A document code is stored in the memory and printed on a management document when a scanned document is stored in the...
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6614933 |
Image processing apparatus and method, and storage medium
An encoding method efficiently encodes information relating to a multivalue image having an arbitrary shape, i.e., a rectangular or non-rectangular shape. An image processing apparatus includes an...
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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...
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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...
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6574367 |
Method and apparatus for pattern matching encoding
An apparatus for pattern matching encoding includes a pattern extracting unit for extracting patterns in input binary or multi-level image data, an accumulating/match-checking unit for accumulating...
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6198850 |
System and method for segmentation dependent lossy and lossless compression for higher quality
A method and system takes advantage of both lossy and lossless compression techniques to increase processing speed and efficiency, and to decrease required image storage space. In the system and...
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6101284 |
Methods and systems for optimizing image data compression involving wavelet transform
The improved image compression method and system optimizes a wavelet transform compression technique by further compressing the transformed data by an edge operation before encoding by a...
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6097845 |
Image discriminator
A system and method for discriminating among image characteristics in order to select among a plurality of compression techniques. Multiple compression schemes are applied to a source image (101)...
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6021227 |
Image compression system including encoder having run mode
An image compression system having a causal, context-based, single-pass adaptive filter encoder that encodes pixel values using multiple context-based threshold values. In the general case, the...
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5911010 |
Image communication apparatus and image processing apparatus
There is disclosed a facsimile apparatus, which selects one of a binary hierarchical coding method called, e.g., a JBIG method and an irreversible coding method called, e.g, a JPEG method in units...
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5883976 |
Selectively utilizing multiple encoding methods
The invention is to exactly select an enconding method with satisfactory encoding efficiency, by comparing the final predicted code lengths for plural encoding methods, prior to the actual encoding...
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5771102 |
Process for the transmission of images
The process for transmission of images enables various classes of source-coded image data to be channel-coded and transmitted at various class code rates. For this purpose, source-coded image data...
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5764804 |
Data encoding and decoding system
A data encoding system for encoding input color pixel data and outputting encoded data. The data encoding system includes a reference pixel generating device which outputs reference pixel data...
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5682249 |
Method of encoding an image at full resolution for storing in a reduced image buffer
A method of encoding an image at full resolution for storing in a reduced image buffer for subsequent decoding and printing by a marking device, the method including the steps of dividing the image...
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5629770 |
Document copying deterrent method using line and word shift techniques
A method is provided that deters the illicit copying of electronically published documents. It includes publishing a plurality of copies of electronically created material to be distributed to a...
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5566001 |
Method and apparatus for fax messaging in a selective call receiver system using multiple code-book data compression
A fax selective call receiver system (10) featuring compression of a fax message with an optimal one of a plurality of compression code-books (50). At least a portion (44) of a source document (26)...
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5553160 |
Method and apparatus for dynamically selecting an image compression process based on image size and color resolution
A method and apparatus which dynamically selects an image compression process for an image to be transferred from a first agent to a second agent. The image being compressed has a particular size...
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5485287 |
High-speed image signal processing system
A high-speed image signal processing system for encoding an image signal, read out at a high speed, into an encoded signal, and/or for recording a decoded signal obtained through a decoding...
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5463476 |
Image processing system
An image processing system having a data compressor for selectively compressing image data, data storage for selectively storing the compressed data from the data compressor, a page buffer for...
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5461682 |
Image filing apparatus providing image data suitable for several input/output devices
An image filing apparatus according to the invention comprises a unit for inputting an image, a plurality of data compressing and extending units each for compressing the input image data to store...
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5452092 |
Changing pixel detector for coding of image data
A circuit is disclosed to simplify hardware of image transmission system such as a facsimile and also improve an encoding function. This circuit has a part for obtaining from a brightness change...
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5442459 |
Process for encoding a half tone image considering similarity between blocks
A device and process for encoding a gradation image of an image transmission system. In order to reduce the amount of transmission data while preserving an edge component sensitive to a human's...
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5426513 |
Prioritized image transmission system and method
A system and method for processing and transmitting video imagery. The system permits the operator of a video image system to selectively transmit desired portions of the video image at an operator...
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5416603 |
Image segmentation using discrete cosine transfer data, and image data transmission apparatus and method using this image segmentation
An image-data transmitter, applicable to a FAX and an image file apparatus, receives image data including a plurality of image-data portions, and identifies the image data for each image-data...
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5410417 |
Method and apparatus for correcting an angle of an optical image for improving the efficiency of facsimile encoding of the image
A system controller (102) is for generating a compressed facsimile message in a radio communications system (100). The system controller (102) includes an image memory (203) for storing an optical...
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5379123 |
Facsimile apparatus having improved coding for transmission of plural images without interruption
A facsimile apparatus for high-speed transmission of a plurality of images. If the last one line of an image data to be transmitted first among the connected images is not an all-white line, an...
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