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6862037 Image transmitting ball-point pen  
An image transmitting ball-point pen mainly consists of a battery compartment, a lower body, an extension tube and a tapered cap located at the terminal end of the extension tube which serves to...
4803312 Interface between personal computer and telex communication system  
An intelligent interface to enable a personal computer or the like to be used as a telex transceiver.
4792648 Telematic reception terminal  
A method for controlling the sending of a response from a telematic reception terminal (teletex, G4 facsimile, and mixed mode) is provided. The receiver includes a PAMB counter whose count...
4736074 Arrangement for the transmission of data  
For the transmission of data between a terminal device, which preferably comprises a personal computer, and a remote subscriber via a transmission link, in particular a teleprinter line, a...
4517553 N-Key rollover keyboard  
An N-Key Rollover Type Keyboard sequentially scans the keys so as to transmit information correctly as to each key which is depressed without transmitting a garbled code which could result from...
4424413 Circuit for converting a binary input signal into a telegraph signal  
A circuit for converting a binary input signal into a telegraph signal has constant current sources which respectively include at least one transistor with a separate bias voltage source for each...
4375060 Electronic apparatus having special key  
Electronic apparatus having transmission capability of data from memory to a transmission line, such as a telephone line, having print-out capability of the data being transmitted, and having a...
3918051 N-key rollover keyboard  
An N-Key Rollover Type Keyboard sequentially scans the keys so as to transmit information correctly as to each key which is depressed without transmitting a garbled code which could result from...
3879722 Interactive input-output computer terminal with automatic relabeling of keyboard  
This invention is a method and apparatus for transfer of information on a screen by optical means onto a keyboard. The invention is implemented by displaying graphical or alpha-numeric information...
3804511 METHOD AND APPARATUS UTILIZING MAGNETIC STORAGE FOR TRANSFERRING GRAPHICAL INFORMATION  
An electrostatic image of graphical information is formed on a surface, for example that of an endless tape, a drum or suitable paper, and then magnetic toner particles are applied to the surface...
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...
3778816 KEYBOARD DATA ENTRY DEVICE EMPLOYING REACTIVE COUPLING CIRCUITS  
A keyboard device for entering data into a data processing system. Each selection key on a keyboard is coupled to a switch. Each switch is connected to an encoder through a reactive coupler which...
3747090 COUNTING MACHINE HAVING MEANS TO PREVENT OPERATION WHEN MORE THAN ONE OR NO KEYS ARE DEPRESSED IN THE SAME KEY ROW  
A business machine data entering and checking system in which a solenoid, is provided for each digit position in the keyboard of the machine. Each solenoid has an armature which is attracted by...
3727003 DECODING AND DISPLAY APPARATUS FOR GROUPS OF PULSE TRAINS  
Receiving apparatus for decoding a plurality of signal pulse trains, each pulse train representing one digit of a calling telephone number or other data values and for displaying the complete...
3721976 KEYBOARD CODING AND INTERLOCK SYSTEM  
A keyboard coding and interlock system wherein the key switches are single contact, two terminal switches coupled to two sides of a logic circuit matrix with substantially fewer input lines than...
3705424 ELECTRICAL SWITCHING APPARATUS UTILIZING CONDUCTIVITY OF THE HUMAN SKIN  
Apparatus whereby selective closing of a plurality of electrical circuits may be accomplished by slight movement of a human body member, thereby establishing a conductive path through or along the...
3676607 PUSHBUTTON TELEPHONE DIAL  
This disclosure describes a telephone station dial having a compliant membrane supporting an array of pushbuttons. A conductive region on the membrane beneath each button contacts, on depression,...
3662382 KEYBOARD CONTROLLED ELECTRICAL CODE-SIGNAL GENERATOR SYSTEM  
An electrical code-signal generator system for operation from a keyboard having a plurality of pulse generating keys comprises a plurality of input lines for individually receiving pulses from the...
3651463 SWITCH CODING CIRCUITRY  
Switch coding circuitry common to a plurality of mechanically unrelated input switches and operative to provide detection of a valid switch actuation and to provide a digital representation of the...
3646551 KEYBOARD FOR CALCULATING MACHINES, ACCOUNTING MACHINES, TELEPRINTING MACHINES OR THE LIKE  
In a keyboard for calculating and like machines, upon the depression of each key, a corresponding elongated plate is shifted in a first direction substantially parallel to the long edge thereof to...
3644888 ERROR-DETECTING APPARATUS FOR A KEYSTROKE-OPERATED BUSINESS MACHINE  
An apparatus which detects errors between the entry of data in a business machine of the type having a plurality of selectively and individually operable information keys movable between a rest...
3643022 TELEPRINTER APPARATUS WITH ELECTRONIC SPEED CONTROL  
A teleprinter system provided with a variable speed control for different transmission rates. Rather than attempting to vary the speed of a motor or mechanical transmission, the speeds of those...
3626409 KEYBOARD DATA ENTRY DEVICE  
Each of the keys in a multiple key keyboard has associated with it a source of radiofrequency (RF) electromagnetic energy which is activated when the key is depressed. The radiated energy from...
3622702 TAPE READER AND CONTROL SYSTEM  
A system providing for improved local and remote control over operation of a tape reader. The controls being operative to selectively initiate and automatically terminate both the reading and...
3617628 ARRANGEMENT FOR AUTOMATICALLY INSERTING TYPE GROUP SHIFT SIGNALS IN KEYBOARD TRANSMITTERS  
A teleprinter keyboard arrangement for automatically inserting type group shift signals. The shift signal is provided by depressing any key not included in the type group used in the previous...
3617627 CODE CONVERTER SUITABLE FOR USE WITH A KEYBOARD  
A photoelectic keyboard includes a code bar for each key, with a plurality of code bars mounted in parallel above 16 light channels. The code bars are each encoded by the presence of a single tine...
3612765 KEYBOARD LOGIC SYSTEM  
A keyboard logic system for controlling keyboard locking and the transmitting time base for all operating conditions which includes a trip switch, operated by the actuation of any key, and two...
3588320 MODING CONTROL FOR A DATA COMMUNICATION SYSTEM  
3588766 ARRANGEMENT,PREFERABLY FOR OPERATING CONTACTS FOR SWITCHING OR CONTROL DEVICES AND THE LIKE  
3569623 ELECTRONIC SIGNAL CONVERTER  
Apparatus for transforming standard polar or bipolar teletypelike signals as received from a telephone line into corresponding signals at different power levels for use with electronic equipment....
3562496 DATA-SENSING DEVICE  
A data-sensing device for sensing indicia on an indicia carrying member, such as an individual card or continuous tape. The device comprises at least one pair of oppositely disposed terminals...
3562765 RECORDING SYSTEM FOR BUSINESS MACHINES  
3558821 TELEPRINTER DEVICE UTILIZING RECEIVER FORMED FROM ELECTRONIC CIRCUITS  
A teleprinter device utilizing a receiver formed from electronic circuits and constructed as a shift register, for use with an electromechanical printing mechanism, and employing a frequency...
3542286 TIMING SYSTEM FOR READOUT OF STORED DATA  
3541232 TRANSMISSION DEVICE FOR A START-STOP TELEPRINTER  
3524022 ELECTRO-OPTICAL DISPLAY SYSTEM  
3507995 PHOTOELECTRIC KEYBOARD  
1,258,786. Keyboards for printers. TELETYPE CORP. 23 Jan., 1969 [29 Jan., 1968], No. 3742/69. HeadingB6F. A keyboard for a teleprinter includes a plurality of key levers 55 each associated with an...
3507996 PHOTOELECTRIC KEYBOARD  
3508244 VISUAL DISPLAY APPARATUS AND CONTROL THEREFOR  
3499161 METHOD AND APPARATUS FOR APPLYING AND SCANNING MARKINGS ON FORM SHEETS IN TYPEWRITERS,CALCULATING MACHINES AND BOOKKEEPING MACHINES  
3498439 PHOTO-OPTICAL CODE TRANSLATOR AND SELECTOR  
3498479 AUGER WITH ANGULARLY CUTTING BLADES FOR SILO UNLOADER  
3495239 PHOTOELECTRIC KEYBOARD  
RE00079 Title is not available  
RE00117 Title is not available  
3483553 KEYBOARD INPUT SYSTEM  
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...
3479456 SYNCHRONIZING MECHANISM FOR ENCRYPTING TELEGRAPH TRANSMITTER  
3479491 ELECTROSTATIC READER HEAD  
3476876 INFORMATION ENCODING AND TRANSMITTING APPARATUS  

Matches 1 - 50 out of 230 1 2 3 4 5 >