Matches 1 - 50 out of 194 1 2 3 4 >


Match Document Document Title
6748568 Apparatus and method for verifying proper data entry and detecting common typing errors  
A method and apparatus for detecting typing errors of critical fixed series of characters (digits) by using at least one redundant parity digit. The invention detects the most common typing errors...
4432090 Automatic error correction system for teleprinter traffic with bunched repetition  
The disclosure concerns a communication system for line printers, such as teleprinter equipment, via high-quality radio communications. The repetition of the signals received mutilated takes place...
4408325 Transmitting additional signals using violations of a redundant code used for transmitting digital signals  
At a transmitter of a digital transmission system which uses a redundant transmission code to transmit data, at least one predetermined code combination which occurs randomly in the encoded data...
4279002 Adapter for raster output scanning printer  
An adapter is provided as an interface between a raster output scanning printer and an electronic image processor which formats digital information for use by the printer in creating printed...
4237338 Coordinated communication system for transmitting data and method of operating the same  
A method of and communication system for transmitting data, such as telegrams, messages and information, from a transmitting station to a receiving station, both stations possessing transmitter...
4092630 System for error control and phasing in interconnected ARQ-circuits  
A system for reducing the time for repeating erroneous signals through a series of interconnected ARQ-circuits (automatic error correction circuits), in which the durations of the repetition...
3891839 Method and apparatus for identifying an invalid character code  
In train printers utilizing a "universal" or "soft" translate buffer wherein the code representations for the characters on the type train may be changed or reprogrammed by reloading the translate...
3878333 Simplex ARQ system  
An improved simplex ARQ system for data transmission circuits using a short wave circuit is provided. A block of characters is sent from a master station to a slave station and if an error occurs...
3856984 SYSTEM FOR ANTICIPATING AN IMPENDING LOSS OF INFORMATION AND FOR GENERATING A RESTRAINT SIGNAL IN RESPONSE THERETO  
A logic system for preventing the loss of information which may occur when synchronization between a transmitter and a receiver is momentarily lost because data is being transmitted from a central...
3851323 DEVICE FOR DETECTING THE ABSENCE OF A FINGER IN A TYPE CARRIER OF A PRINTER  
A device is provided for detecting the absence of a finger in a printer, comprising a mobile support provided with print-type support-fingers and with an equal number of synchronization marks, and...
3815495 MODULUS 10 NUMBERING MACHINE  
An improved numbering machine of the type having 5 or 10 conventional numbering heads mounted about a shaft coupled to a press or collator drive-train so that each of the heads is presented...
3812290 SYSTEM FOR INDICATING PARITY-DISTURBING INTERFERENCES IN TRANSMISSIONS FOR TELEPRINTERS  
A system for indicating parity-disturbing interferences in transmissions for teleprinters wherein the teleprinters print a special symbol to indicate such interferences including an electronic...
3737577 COMMUNICATION SYSTEMS FOR RECEIVING AND CHECKING REPEATEDLY TRANSMITTED MULTI-DIGITAL TELEGRAMS  
In a communication system in which information is conveyed as a repeatedly transmitted digital telegram, telegram checking equipment is provided at a receiving station. The checking equipment...
3656426 APPARATUS FOR PRINTING ALPHANUMERIC AND BINARY CODE MARKINGS AND COMPARISON MEANS THEREFOR  
An information printing and storage system in which a printer prints alphanumeric characters and a self-clocking code pattern on paper or card stock. A transducer scanning the printed lines senses...
3654604 SECURE COMMUNICATIONS CONTROL SYSTEM  
A system for generating secure command signals at a remote station, such as a branch bank, under the control of a central station, such as a main bank. Random words are independently generated at...
3649756 GENERATOR OF BINARY-CODED REPRESENTATIONS OF SYMBOLS  
A binary-code generator includes a five-stage binary counter and a modulo-five counter connected in cascade. The input of the binary counter is driven, via a pulse repetition rate divider, from a...
3646518 FEEDBACK ERROR CONTROL SYSTEM  
Information sequences are encoded into a block code and both transmitted to a receiving terminal and stored at the transmitting terminal. The transmitted blocks are decoded at the receiving...
3641494 BIDIRECTIONAL DATA TRANSMISSION SYSTEM WITH ERROR CORRECTION  
A bidirectional data transmission system for transmitting information between two terminal stations incorporating in each terminal station an arrangement for checking the received data and...
3612844 DATA TRANSMISSION SYSTEM  
A terminal apparatus is described for a data transmission system which transmits messages constituted by a series of characters. The terminal apparatus includes means for checking the entering of...
3609303 RECORD READER HAVING EJECTOR WITH EJECT INHIBIT MEANS  
Information, in the form of perforations carried by a record card, is gathered by a system which includes an information storage unit housed in proximity to, and for coaction with, a record...
3609301 STAR WHEEL RECORD READER HAVING WHEEL TIP ALIGNING MEANS  
Information, in the form of perforations carried by a record card, is gathered by a system which includes an information storage unit housed in proximity to, and for coaction with, a record...
3609302 RECORD READER HAVING PARTICULAR RECORD HOLDER AND HOLDER CARRYING MEANS  
Information, in the form of perforations carried by a record card, is gathered by a system which includes an information storage unit housed in proximity to, and for coaction with, a record...
3609304 INFORMATION GATHERING SYSTEM  
Information, in the form of perforations carried by a record card, is gathered by a system which includes an information storage unit housed in proximity to, and for coaction with, a record...
3605091 FEEDBACK ERROR CONTROL ARRANGEMENT  
A feedback error control arrangement for data transmission systems which have both forward and reverse channels is disclosed. Parity check digits for an information message are generated at a...
3593281 COMPENSATED AUTOMATIC ERROR CORRECTION TELECOMMUNICATION SYSTEM  
A telecommunication system between two stations involving automatic requests for repetition of received disturbed signals having means for speeding up the normal transmission rate between said...
3582548 PARITY CHECK DEVICE  
A parity check device for code combinations comprising a plurality of binary code units. The device includes a plurality of elements which are shiftable between a pair of positions in response to...
3576952 FORWARD ERROR CORRECTING CODE TELECOMMUNICATING SYSTEM  
A multielement code telecommunication system comprising first converting each code signal into a constant ratio 1-bit/0-bit signal, storing a predetermined successive number of such converted code...
3560718 MARKED GRID READING AND TESTING DEVICE  
A device for reading marked areas on a grid on an information bearer comping means for moving the bearer past a first reading means having a low sensitivity reader, storing and testing the results...
3539786 SOLENOID ERROR CHECKING SYSTEM  
3535681 CODE COMMUNICATION SYSTEM  
3535448 TWO-CHANNEL TIME-MULTIPLEX TRANSMISSION SYSTEMS  
3528057 SYSTEM FOR TRANSMITTING DIGITAL TRAFFIC SIGNALS  
3505643 SPIRAL-VERTICAL PARITY CHECK GENERATOR  
3467776 SYSTEM FOR AUTOMATIC ERROR DETECTION AND CORRECTION OF TELECOMMUNICATED SIGNALS  
3461238 SIMPLEX TELECOMMUNICATION SYSTEM WITH AUTOMATIC ERROR DETECTION AND CORRECTION  
3439327 SYSTEMS FOR PROTECTION AGAINST ERRORS IN TRANSMISSION  
3439332 SPIRAL-VERTICAL PARITY GENERATING SYSTEM  
3418630 Double check signal test self-correcting communication system  
3414673 Record error correction system  
3413600 Transmission system  
3412380 Two-character, single error-correcting system compatible with telegraph transmission  
3402389 Message verification using associative memory techniques  
3401379 False code generator  
3398400 Method and arrangement for transmitting and receiving data without errors  
3396368 ELECTRICAL SIGNALLING ARRANGEMENT FOR CONTROL OF TAPE TRANSMISSION SYSTEM  
3392371 Data transmission system with automatic error correction  
3388378 Error detection and correction apparatus for duplex communication system  
3381273 Transmission system  
3381272 Data transmission system  
3381271 Transposition error protection system for telegraph signals  

Matches 1 - 50 out of 194 1 2 3 4 >