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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 the...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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 and...
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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...
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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 each...
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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...
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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...
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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...
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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...
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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....
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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 which...
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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...
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3542286 |
TIMING SYSTEM FOR READOUT OF STORED DATA
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3541232 |
TRANSMISSION DEVICE FOR A START-STOP TELEPRINTER
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3524022 |
ELECTRO-OPTICAL DISPLAY SYSTEM
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3507996 |
PHOTOELECTRIC KEYBOARD
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3507995 |
PHOTOELECTRIC KEYBOARD
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3508244 |
VISUAL DISPLAY APPARATUS AND CONTROL THEREFOR
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3498479 |
AUGER WITH ANGULARLY CUTTING BLADES FOR SILO UNLOADER
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3498439 |
PHOTO-OPTICAL CODE TRANSLATOR AND SELECTOR
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3499161 |
METHOD AND APPARATUS FOR APPLYING AND SCANNING MARKINGS ON FORM SHEETS IN TYPEWRITERS,CALCULATING MACHINES AND BOOKKEEPING MACHINES
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3495239 |
PHOTOELECTRIC KEYBOARD
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RE00079 |
Title is not available
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3588766 |
ARRANGEMENT,PREFERABLY FOR OPERATING CONTACTS FOR SWITCHING OR CONTROL DEVICES AND THE LIKE
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3562765 |
RECORDING SYSTEM FOR BUSINESS MACHINES
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3588320 |
MODING CONTROL FOR A DATA COMMUNICATION SYSTEM
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RE00117 |
Title is not available
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3483553 |
KEYBOARD INPUT SYSTEM
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3482042 |
TELEGRAPH ELECTRONIC CONTROL DEVICE
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3479491 |
ELECTROSTATIC READER HEAD
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3479456 |
SYNCHRONIZING MECHANISM FOR ENCRYPTING TELEGRAPH TRANSMITTER
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3476876 |
INFORMATION ENCODING AND TRANSMITTING APPARATUS
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