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4048657 |
Method and apparatus for synchronizing a facsimile transmission
A facsimile transmission system is described which includes a transmitter section having an optical sensor driven across a selected document by a variable speed motor controlled by the frequency of...
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4032888 |
Nonlinear scan drive reader with variable clock correction
A mirror driven by a resonant mechanical oscillator is used to scan a laser beam across a document. The incident laser beam line scans the record and is absorbed or reflected depending upon the...
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4013827 |
Process and an arrangement for facsimile coding with address insertion of a specific surface element scanned for transmission limiting fault effectiveness up to the next inserted address
In facsimile coding in which the items of information contained on a two-color original consisting of individual surface elements are scanned for transmission, and in which sequence lengths are...
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3980809 |
Encoding logic for reduced bandwidth pictorial data transmission system
The present invention relates to pictorial data transmission systems for transmitting fixed images from one point to another. The invention employs two modes for encoding successive blocks of...
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3974326 |
Facsimile communication system
A black and white facsimile communication system wherein the document to be transmitted is scanned line by line, the scanner signals are sampled to obtain pulse sequences having a constant number...
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3965290 |
Video-to-binary conversion apparatus having moire suppression characteristics
Video-to-binary conversion apparatus for use in image reproduction systems and the like to convert an input video signal to an output binary signal and comprising an output data normalizer for...
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3891793 |
Binary coding device
Binary coding device for the facsimile transmission of pictures of a document. The voltage representative of each point of the document is compared with a variable reference signal sent out by a...
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3886308 |
Facsimile receiver
A facsimile receiver reproduces documents at remote locations automatically while unattended. The receiver includes a telephone coupler for receiving data over a telephone line, a scan converter, a...
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3876825 |
Facsimile signal transmission apparatus
Facsimile signal transmission apparatus comprising a facsimilie signal generator, a sampling circuit which converts facsimile signals from said generator into digital signals; means including a...
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3757036 |
ELECTROSTATIC RECORDING METHOD AND APPARATUS
Method for electrostatic recording utilizing translatory motion between a stylus or styli and an electrostatic recording medium, including the steps of overlapping recorded lines and depositing a...
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3752912 |
SYSTEM FOR CONVERTING FACSIMILE SIGNALS
A system for converting facsimile signals, in which an analog facsimile signal is sampled, the sampled signal is compressed into a plurality of intermittently arranged pulse bundles, and the...
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3745243 |
SYSTEM FOR PRINTING A PATTERN WITH K LINES EITHER POINT BY POINT OR LINE BY LINE
The system has, in combination, a support arrangement for supporting a drawing paper and a printing arrangement for printing a pattern on this drawing paper: There is a transport device for...
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3743765 |
REDUNDANT AREA CODING SYSTEM
An apparatus for selecting areas of a film which are of no interest to a user, coding these unimportant areas for identification purposes and selecting the important areas to be translated into...
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3726993 |
DATA COMPRESSION METHODS AND APPARATUS
Data compression methods and the apparatus therefor are provided in accordance with the teachings of the present invention. According to one embodiment of this invention data signals are...
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3702899 |
DIGITAL VIDEO TRANSMITTER
A system for transmitting visual image information over telephone lines is disclosed. The system comprises a vidicon, video preamplifier, signal conditioning circuitry, an analog to digital...
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3689693 |
MULTIPLE HEAD INK DROP GRAPHIC GENERATOR
A method of and apparatus for reproducing a graphic representation includes a scanner for scanning the original along a series of contiguous lines and transmitting an analog signal proportional to...
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3678388 |
GROUND STATION SYSTEM FOR RETRANSMITTING SATELLITE FACSIMILE SIGNALS OVER DIGITAL DATA LINKS
A ground station system for digitally processing automatic-picture-transmion (APT) pictures transmitted by earth-orbiting satellites whereby the processed pictures can be re-transmitted over a...
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3676862 |
SIGNAL CONVERSION SYSTEM WITH TIME BASE COMPRESSION OF THE INPUT DATA
A signal conversion system in which coded signal pulses to be transmitted to a remote place, for example, pulses of coded facsimile signal, are stored in at least one shift register in...
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3604846 |
METHOD AND SYSTEM FOR RECONSTRUCTION OF HALF-TONE IMAGES
Reproduction of original graphic representations is accomplished by (a) optically scanning an original (b) producing a density scaled digital output (c) processing this information to derive code...
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3590164 |
TRANSMISSION SYSTEM FOR TWO-LEVEL SIGNALS PROVIDING REDUCED BANDWIDTH REQUIREMENTS
An electrical communication system wherein two-level analog signals, as in black-and-white or message facsimile, are converted into digital signals for transmission over a transmission channel. The...
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3524926 |
SYSTEM FOR DELTA ENCODING AT SELECTED INTERVALS
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3508002 |
TELEPHONE LINE TRANSMISSION DATA SYSTEM
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3500073 |
ANALOG TO BINARY SIGNAL PROCESSOR
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3499975 |
REPEATED SCAN DIGITALLY CODED FACSIMILE TRANSMISSION
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3483317 |
SELECTIVE ENCODING TECHNIQUE FOR BAND-WIDTH REDUCTION IN GRAPHIC COMMUNICATION SYSTEMS
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3482036 |
DIGITAL SIGNAL REPRESENTATION OF VIDEO SIGNALS WITH RANDOM SAMPLING
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3470325 |
VIDEO SIGNAL ENCODING TECHNIQUE FOR REDUCED BANDWIDTH TRANSMISSION
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3305841 |
Pattern generator
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3294896 |
Digital encoder for facsimile transmission
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2922840 |
Weather chart facsimile system
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3588335 |
Title is not available
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