Matches 51 - 100 out of 131 < 1 2 3 >
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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...
4742556 Character recognition method  
A character recognition method comprising the steps of (1) acquiring a two dimensional array of pixels, (2) locating a character, (3) determining the size of the character, (4) reducing the number...
4716471 Data decoding apparatus  
A data decoding apparatus decodes MH codes having different code lengths in real time and at high speed. The apparatus has an image memory, a tristate buffer group, a parallel to serial converter,...
4706264 Digital data compression method and means  
A system for compressing digital data maintains a code table of plaintext symbols at a transmitting location. Blocks of plaintext symbols in a message are encoded using the code table which table...
4703362 Mixed-mode symbol removal method for facsimile data compression  
A method for data compression provides for an improved digital facsimile ument transmission system. The mixed mode method provides that symbols can be located both individually and as a part of a...
4703516 Character image data compression system  
A character image data compression system for compressing binary data from an image corresponding to a two-dimensional character image, making it possible to optionally output the coded data in...
4698688 Image processing system  
An image processing system includes an image reader unit which reads an image so as to generate it as 4-bit data, and a communication unit for converting the 4-bit data into 6-bit data. The...
4684997 Machine for the reading, processing and compression of documents  
A machine for the reading, processing and compression of documents. This machine utilizes a separate image bus and communication bus. The image bus links a reader having a plurality of reading...
4677571 Electronic publishing  
A novel electronic printing system for operating both a linear-raster electro-optical display device and a linear-raster type printer, which system is capable of integrating alphanumeric and/or...
4674126 Image signal processing apparatus  
An image signal processing apparatus has a CCD for reading an image, a peak detector circuit for detecting a peak value of changes in an analog image signal received from the CCD, a slice level...
4648119 Method and apparatus for forming 3×3 pixel arrays and for performing programmable pattern contingent modifications of those arrays  
Apparatus for defining a bank of sequential windows from a raster-scanned image of a document for storage in a data base. In addition, the apparatus includes a look-up table for each window wherein...
4646134 Apparatus for encoding image signal  
An image signal encoding system wherein image signal is directly taken in through video camera, changed to digital data, broken down into PDI basic patterns, and then converted into NAPLPS code...
4638497 Framing code detector for a teletext receiver  
A framing code detector includes a shift register supplied with a received framing code and a number of EX-OR gates each having one input connected to a respective stage of the shift register and...
4633326 Fascimile communication system with desired image quality  
A facsimile communication system, in which a coding level of a facsimile signal is determined for each image to be transmitted by a coding algorithm of an encoder in correspondence to an image...
4633325 Adaptive predictive encoding and/or decoding apparatus  
An adaptive predictive encoding apparatus generates predictive values P 1 , P 2 , . . . , P n with respect to a quantized value X of a picture element x. Predictive error signals Y 1 , Y 2 , . . ....
4630124 Quality selectable facsimile image coding system  
A facsimile signal coding system is disclosed, in which initial encoding is performed for detecting, from picture elements forming a facsimile picture signal, picture elements at intervals of ΔX...
4626922 Picture signal discriminating circuit  
A picture signal discriminating circuit, having a comparator to binary-encode an analog picture signal obtained by raster-scanning an original signal, changes the threshold level for the comparator...
4627002 Method and apparatus for recording characters  
A method and apparatus for element-by-element and image-line-by-image-line recording of print characters on a full page by means of an exposing beam deflectable over the full page, and which is...
4623936 Error processing technique for modified read code  
A method of error processing is disclosed in which the first erroneous line etected in a facsimile transmission is decoded, and printed in the normal manner, up to the point in the line where an...
4614978 Office communications system  
An office communications system wherein, for the manipulation and/or transmission of text available in an already printed form, a text converter is connected between a word processing terminal and...
4603431 Method and apparatus for vectorizing documents and symbol recognition  
An apparatus codes a scanned document locally representing each graphic element within a prescribed measure of accuracy by a trapezoidal approximation. The invention also includes a method for...
4578711 Video data signal digitization and correction system  
An analog video data signal digitization and correction system scans a medium to produce video data signals representing images printed on the medium. Two reference quantities representing analog...
4571633 High-speed facsimile machine capable of parallel processing  
A facsimile communication machine capable of transmitting and receiving coded picture data is provided. The machine comprises a system control unit including a pair of CPUs, one of which is capable...
4562486 Conversion of multilevel digital data to binary data  
A system for converting a multilevel video signal into a binary video signal for use in an image processing machine such as a facsimile machine or digital copier includes a threshold setting...
4555802 Compaction and decompaction of non-coded information bearing signals  
Image or character data in the form of a rectangular array of binary 1s and 0s (bits) are divided into a plurality of segments, such as thirty-two by thirty-two bit segments or one bit by eight bit...
4553171 Tile encoding in image printing  
A method for digitally printing a digital image by reference to a succession of code words representing blocks of pixels of the original image. The image is originally subdivided into uniform size...
4539600 Image signal processing with a variable threshold  
An image signal processing apparatus particularly suitable for use in a facsimile system for converting an analog image signal obtained by photoelectrically reading an original into a binary image...
4517607 Method of and apparatus for compensating image in image reproduction system  
An image compensating method and an apparatus for the same which improves the quality of an image to be reproduced by an image reproduction system. A condition of an observed pixel or object pixel...
4499499 Method for identification and compression of facsimile symbols in text processing systems  
An improved system for identifying and compacting text data to be transmitted over communications lines and thereby reducing the data volume and transmission time. Transmitting and receiving text...
4468703 Image signal processing device  
An image signal processing device uses an automatically varied threshold value calculated from the average density and the density distribution of an original (document, etc). The threshold value...
4459617 Facsimile reception apparatus  
A facsimile reception apparatus of a facsimile transceiver processes video data using a microcomputer. When one line of decoded video data are stored in a random access memory of the microcomputer,...
4410916 Dual mode facsimile coding system and method  
A dual mode facsimile data compression technique which possesses the advantage of symbol recognition and extended run-length coding methods. In operation, a symbol blocking operator isolates...
4408233 Method and apparatus for accentuating the features of a monochrome image reproduced by means of a digital transcription  
A method and apparatus for accentuating the features of a monochrome image reproduced by means of a digital transcription. The apparatus includes an analog portion disposed between the...
4400737 Apparatus for producing and reproducing embedded pattern  
Apparatus for producing and reproducing embedded patterns in which a character or the like including a pattern which is not observable macroscopically can be differentiated from the other formats...
4353096 Digital facsimile system to band-compress half-tone picture signals  
A digital facsimile system provides band-compression of half-tone picture signals. Primarily, a plurality of analog signals are derived by successively scanning a picture. Thereafter, the analog...
4320419 Image reproduction equipment  
To record on a single sheet (9) both a picture image and alphanumeric characters, each character to be recorded is stored (24) in the form of signals representing a multi-column pattern of dots...
4280144 Coarse scan/fine print algorithm  
An apparatus and method for improving the print quality of a coarse scan/fine print image processing device. The apparatus includes an encoder which assigns a code to a coarsely scanned picture...
4261018 Progressive image transmission  
An image composed of binary black and white picture elements (pixels) is progressively transmitted over a narrow-band channel after binary values of all pixels have been formatted into a...
4244004 Method for analog-digital conversion, and a picture reproduction method employing the same  
A method of analog-digital conversion is disclosed, wherein sub-sampling of an analog signal is performed at a certain multiple n of the basic sampling rate, and wherein from n...
4222077 Analog-digital conversion method, and a picture reproduction method using the same  
A method of analog-digital conversion is disclosed, wherein sub-sampling of an analog signal is performed at a certain multiple n of the basic sampling rate, wherein a discrimination signal...
4200769 Process and arrangement for selectively transmitting predetermined characters or graphic patterns  
Predetermined characters or graphic patterns are transmitted from a transmitting station to a receiving station in a system wherein a printing head is provided with at least one printing component...
4188643 Method and arrangement for correcting errors in facsimile transmission  
In facsimile transmission the sequences of picture elements having the same luminance are transmitted in coded form. The code words have, in general, different lengths and no ambiguous beginning or...
4155097 Method and arrangement for the redundancy-reducing coding of pictures  
With known methods for predictive decorrelation it always applies only to one or more previously scanned elements of the same picture line. A disturbance for a decorrelated value leads on...
4151562 Methods and apparatus for transmitting image data  
This invention relates to information transmission systems and in one embodiment comprises apparatus and methods for generating facsimile signals that are compatible with devices in general use for...
4148066 Interface for enabling continuous high speed row grabbing video display with real time hard copy print out thereof  
An interface for enabling continuous high speed row grabbing video display with real time hard copy print out thereof interfaces a hard copy printer with a real time frame grabbing video display...
4135213 Row grabbing video display terminal having local programmable control thereof  
A real time frame grabbing video display terminal for substantially instantaneously providing a continuous direct video display of a selectable predetermined video frame of informatin on a video...
4128850 Method and apparatus for transmitting facsimiles over telephone lines  
The quality of and/or transmission speed for fingerprint facsimiles transmitted over telephone lines are improved by image enhancement prior to transmission. Image enhancement is achieved by using...
4107457 Transfer terminal with library phrase memory  
A data transfer terminal of the type including a keyboard means, a display means and a printer for use in a data center controlled data transfer system. The printer of the data transfer terminal is...
4091424 Facsimile compression system  
Disclosed herein is a data compression system for compressing binary facsimile data to reduce transmission times over standard telephone system circuits. At the transmit end of the circuit a...
4084195 Image data remapping system  
A system remaps image data generated by successive sweeps of the image by a single transducer element into a format for use by a print head assembly which requires the simultaneous application of...
Matches 51 - 100 out of 131 < 1 2 3 >