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Match Document Document Title
4380009 Message communication system  
A message communication system which provides instant messages and memoranda at a telephone user's desk. In an office complex, a message is transmitted over pre-existing office power lines to...
4243836 Digital autostart circuit  
A terminal unit having a digital autostart circuit for energizing an output device such as a teleprinter. The autostart circuit responds only to the space character which is transmitted between...
4191848 Teletypewriter motor controlling  
The first signal transition of a teletypewriter signal triggers a resettable one-shot that activates the motor run switch to turn the teletypewriter motor on for a minimum interval of from two...
4160874 Process for signaling an interruption in the state of readiness for the reception in data terminal devices in which data are exchanged  
In a process for signaling an interruption in the state of readiness of a data terminal device in a called station, the data being transmitted over a data selector network, and in particular for...
4093819 Closed user group facility  
A closed user group facility in a data transmission system which has a closed user group of terminals accomodated in a switching network, and in which the switching network registers a terminating...
4054745 Motor control device for data terminals  
A control device is described for linking a motor operated data terminal to a data processor which provides information signals including data characters and data terminal motor-start signals. The...
3995106 Information transmission system  
The invention refers to a system for rapidly transferring optical information from a document to a human being over a telecommunication channel. The system comprises an optical reader connected...
3938187 System for putting an information record onto a magnetic substrate  
An information recording system comprises a peripheral control unit for recording bits of a character one at a time coincident with the middle of a record time interval. The peripheral control...
3916090 Intracommunication system for a communications terminal  
A telecommunications terminal which is divided into at least two portions; specifically, a keyboard portion and a central portion with a display and a memory, in which the depression of a key on...
3909510 Direct connection digital transmission apparatus  
Apparatus is disclosed for interconnecting digital data stations through a transmission medium such as a directly connected unloaded pair of wires. The apparatus transmits data as polarity, or...
3803346 CIRCUIT ARRANGEMENT FOR THE TRANSFORMATION OF DIRECT CURRENT TELEGRAPHY SIGNALS  
A circuit arrangement for converting single current, direct current telegraphy signals into double current signals is described. The double current signals operate a double current telegraphy...
3800069 SINGLE STEP TAPE READER  
A telegraph transmitter is adapted to generate a stream of output signals while operating in a continuous or running mode as an encoded punched tape incrementally is driven past a sensing station...
3798549 APPARATUS FOR TRANSMITTING DATA OVER RADIO CONNECTIONS  
Circuitry is described which facilitates data transmission over radio links by preventing receiver errors, even when call addresses are distorted. The incoming call addresses consisting of several...
3796995 REMOTE CODED DUAL STATE CONTROLLER APPARATUS  
A remote station for a loop communication system includes a point module which is specifically related to an on-off load control or the like. The point module is coupled to the loop system through...
3757032 METHOD AND APPARATUS FOR SELECTIVELY ENABLING A REMOTE RECEIVER  
An information transmission and recording system wherein a character is arranged in a dot-matrix form and the signals which represent the dots are transmitted column by column of the matrix in...
3699525 USE OF CONTROL WORDS TO CHANGE CONFIGURATION AND OPERATING MODE OF A DATA COMMUNICATION SYSTEM  
A data communication system comprising a processor, a memory, a communications controller and a plurality of terminal devices utilizes control words to select the configuration and to select the...
3684822 METHOD FOR CENTRALIZING THE FUNCTIONS OF SINGLE CURRENT-DOUBLE CURRENT CONVERTER CIRCUITS IN CENTRALLY CONTROLLED TELEPRINTER DIAL SWITCHING INSTALLATIONS  
A method is described for the conversion of single current to double current signals in teleprinter dial switching installations having a central control. The control system operates to control...
3678179 TERMINAL APPARATUS  
A printing terminal apparatus for data transmission is adapted to transmit at the beginning of each message sent to a central computer, a code combination indicative of the terminal operator and...
3646573 CIRCUITS FOR INTERCONVERTING GROUPS OF PARALLEL FORM AND SERIAL FORM SIGNAL BITS  
A system for linking a first typewriter with a remote typewriter or other data processing device, whereby the first typewriter transmits groups of binary signal bits indicative of typewriter...
3623068 SERVING DISPLAY FUNCTIONS BY MEANS OF CODED SPACE INFORMATION  
Disclosed is a display system including a regenerative display and a memory where the memory provides the information which is displayed. The memory addresses have a one-for-one correlation with...
3601539 PHASE SYNCHRONISM SYSTEM FOR A ONE-WAY TELEGRAPH CONNECTION  
A one-way telegraph system for permitting recurring phase synchronism checks by transmitting at predetermined intervals a definite series of alternate special service and/or idle time signals...
3593293 REMOTE CONTROL AND DATA LOGGING SYSTEM  
A data reporting, logging and remote control system utilizing teleprinter code for transmission of orders and reporting information between a control station and one or several outstations.
3548080 CIRCUIT ARRANGEMENT FOR TELEPRINTER EXCHANGE SYSTEMS  
1,112,137. Telegraphy. SIEMENS A.G. 14 Sept., 1966 [15 Sept., 1965], No. 40972/66. Heading H4P. In a telegraph system single current signals from a two wire subscriber Tn are converted to double...
3529076 ARRANGEMENT FOR THE OVERFLOW STORAGE WITH RESPECT TO BUSY LINES IN TELECOMMUNICATION THROUGH SWITCHING (CIRCUIT-SWITCHING) SYSTEMS  
3527891 SELECTOR CIRCUIT  
3519743 CIRCUIT ARRANGEMENT FOR SIMULTANEOUS SIGNALLING IN BOTH TRANSMISSION DIRECTIONS BETWEEN TWO TERMINAL STATIONS IN TELECOMMUNICATION SYSTEMS  
1,134,371. Data transmission systems. INTERNATIONAL STANDARD ELECTRIC CORP. 14 July, 1967 [14 July, 1966; 11 March, 1967], No. 32460/67. Heading H4P. An electrical signalling system comprises two...
3511923 REMOTELY CONTROLLABLE TELEGRAPHIC SYSTEM  
1,154,678. Telegraphy; transistor pulse circuits. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 14 Feb., 1968 [14 Feb., 1967], No. 7189/68. Headings H3T and H4P. An unattended telegraph...
3509271 ELECTRONIC TIME DELAY MOTOR STOP  
1,190,493. Control of motors. MITE CORP. 9 April, 1968 [28 July, 1967], No. 17080/68. Heading H2J. The motor M driving a telegraph printer is stopped if no signal is received for a predetermined...
3496293 AUTOMATIC DIRECTIONAL CONTROL FOR HALF-DUPLEX DATA TRANSMISSION SYSTEMS  
3482042 TELEGRAPH ELECTRONIC CONTROL DEVICE  
1,168,250. Telegraphy; Pulse duration discriminating. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 19 Jan., 1967 [26 Jan., 1966], No. 2906/67. Headings H3T and H4P. A circuit for...
3462552 CONTROL APPARATUS FOR TELEGRAPH EXCHANGE REPEATER  
1,143,712. Telegraphy. SIEMENS A.G. 7 Feb., 1967 [8 Feb., 1966], No. 5759/67. Heading H4P. A circuit for detecting the clearing signal in a telegraph exchange system comprises a number of relays...
3453379 COMMUNICATION SYSTEM  
3429986 PRINT ELEMENT PROCESS FOR MULTILINGUAL COMMUNICATIONS  
3427588 DISTRIBUTION OF MESSAGES TO DATA STATION RECEIVERS ON MULTISTATION LINES  
3427589 ON-LINE DELIVERY OF DATA MESSAGES FROM A TRANSMITTER TO RECEIVERS ON THE SAME MULTISTATION LINE  
1,172,057. Digital transmission systems. WESTERN ELECTRIC CO. Inc. 28 June, 1968 [29 June, 1967], No. 30953/68. Heading H4P. [Also in Division G4] The control station of a digital transmission...
3427587 ROLL CALL ACKNOWLEDGMENT OF DATA STATIONS ON MULTISTATION LINES  
1,232,441. Digital transmission systems. WESTERN ELECTRIC CO. Inc. 8 July, 1968 [7 July, 1967], No. 32419/68. Heading H4P. [Also in Division G4] In a digital transmission system comprising a...
3420948 TELEGRAPH TRANSMITTER CONTROL CIRCUIT  
3418430 Remotely operated data recording system with rotatable card magazine  
3404219 In-band break-in system  
3404380 Bit-at-a-time assembly device using magnetostrictive delay lines  
1,179,005. Buffer storage systems. INTERNATIONAL STANDARD ELECTRIC CORP. 26 May, 1967 [31 May, 1966], No. 24582/67. Heading G4C. Telegraph lines are sampled under control of status storage means...
3398234 Multiple address circuit  
Data coupling apparatus for establishing a data communication path between a local data device and a remote data device over an existing communication channel. The capability of each of the local...
3368028 Data entry apparatus  
1,049,177. Data storage apparatus. BUNKER-RAMO CORPORATION. Sept. 4, 1964 [Sept. 6, 1963], No. 36424/64. Heading G4C. Data from a plurality of remote stations is entered sequentially under control...
3317660 Printing telegraph motor start-stop mechanism  
RE26099 Title is not available  
3268649 Telegraph message preparation and switching center  
3264406 Teleprinter control device  
970,606. Telegraphy. CREED & CO. Ltd. May 6, 1963 [May 4, 1962], No. 17777/63. Drawings to Specification. Heading H4P. A local control unit for a teleprinter is connected to the exchange, from...
3245043 Message communication systems with interstation information storage and transmission  
3245038 Central to remote communication system with address modification for the remote stations  
3236940 Teletype code control circuits  
3214513 Communication equipment  

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