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7396177 |
Universal pen with position or motion sensing
A pen that includes a marking device for marking a visible path onto a first surface. The marking device is electronically controllable to change a value of an attribute of the path such as color,...
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7295922 |
Interactive map production
A method of producing an interactive map using a computer system. The method includes determining graphic data indicative of a visible representation of a map of a geographic area and determining...
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6808330 |
Universal pen with sampler
A pen has a marking device operative to mark a visible path onto a surface. The marking device is electronically controllable to change at least one of the attributes of the path. The attributes...
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6550997 |
Printhead/ink cartridge for pen
A cartridge for a pen has an electronically controllable marking device, such as an ink jet printhead, for marking a visible path on a surface, a non marking stylus nib that in use contacts the...
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6474888 |
Universal pen with code sensor
A pen has a marking device operative to mark a visible path onto a surface. The marking device is electronically controllable to change at least one of the attributes of the path. The attributes...
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4649231 |
Method for the transmission of characters by means of the code combinations of a telegraph alphabet
It is an object of the present invention to provide a teleprinting machine capable of transmitting and writing capital and small letters, where the number of additionally transmitted shift code...
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4511758 |
Reduction of message length in a communication system
In a message communication system and process, a character string with a plurality of characters is encoded into a compact code, which is transmitted to a reception side. At the reception side, the...
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4442506 |
Portable word-processor
A portable word-processor comprising the following components; a microprocessor and, connected thereto, a manually operable input chord keyboard having four finger keys and at least one thumb key,...
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4408182 |
Lighting and morse code signaling device
A lighting and signaling device is provided which is capable of both lighting and signaling intermittent signals such as Morse code signals. The lighting and signaling device has a switch for...
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4333091 |
Command buffers for electronic code keyer
A system is disclosed for utilizing command buffers in a microprocessor controlled electronic code keyer for storing, rather than text to be transmitted, command strings for keyer operation. The...
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4292624 |
International Morse Code number generator
The binary coded decimal of a number is selectively loaded into presettable counters. A switching means sequentially connects each of the binary levels of each of the digits comprising the number...
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4166196 |
Electric direct current telegraphy transmitter
An electronic transmitter for direct current telegraphy by means of polar line currents has a switching circuit that selectively connects one of the two poles of a telegraphy battery through a...
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4163870 |
Circuit for producing a pulse succession
A circuit for producing a pulse succession of long duration from several mutually independently produced synchronous pulse successions of shorter duration in which the output signal is derived as a...
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4161623 |
Code generator for text transmission devices
A code generator for text transmission devices emits code characters assigned to subscribers over a trunk line in order to allow a subscriber to be recognized. The code characters are stored in a...
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4107457 |
Transfer terminal with library phrase memory
A data transfer terminal of the type including a keyboard means, a display means and a printer for use in a data center controlled data transfer system. The printer of the data transfer terminal is...
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4072820 |
Apparatus for coding input data characters
Apparatus for coding input data characters from a keyboard incorporates apparatus for recognizing characters which are to be represented by two successive code representations, rather than the...
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4042777 |
One-handed keyboard and its control means
A keyboard which has 10 keys controlled by the four fingers and four keys controlled by the thumb of the same hand. On it, the operator forms chords somewhat as a pianist forms chords on a piano....
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4028696 |
Double depression magnetic keyswitch
A keyswitch for a keyboard which may generate either a first signal or a second signal is formed by a pair of saturable magnetic cores and corresponding drive and sense line wires that are molded...
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3968330 |
Code generator for teleprinters or data printers
A code generator for teleprinters or data printers which, for the recognition of the subscriber, emits a sequence of character signals assigned to the subscriber. A memory is provided which is...
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3968324 |
Circuit arrangement for synchronizing the letters/figures levels of several input and output devices in teleprinters
An arrangement for synchronizing one or more input/output devices in teleprinters in the context of a subdivision, necessitated by the use of a five-bit code (CCITT 2) for communications...
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3875332 |
Digital transmitter for data bus communications system
Disclosed is an improved digital transmitter for transmitting serial pulse-code modulation (pcm) data at high bit rates over a transmission line. When not transmitting, the transmitter features a...
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3851099 |
TIME-DIVISION MULTIPLEX SYSTEM
A circuit arrangement for the transmission of a plurality of binary coded messages and continuous signals over a common channel according to time division multiplex principles is described. A fixed...
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3833765 |
KEYBOARD AND MESSAGE SYSTEM
A keyboard entry digital data transmission and reception system employing a one-handed keyboard is disclosed. The novel keyboard arrangement and the logic circuitry associated therewith permits...
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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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3773970 |
TELEPRINTER SUBSCRIBER STATION APPARATUS FOR SINGLE CURRENT OPERATION WITH BACK POTENTIAL AT THE SUBSCRIBER STATION
In teleprinter subscriber station circuitry functioning according to the single current principle an auxiliary current source is described whereby a back potential is generated. The auxiliary...
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3641328 |
KEYBOARD ENTRY MEANS AND POWER CONTROL MEANS FOR CALCULATOR
Internal control and subroutine logic transfers data between a keyboard input, a random access memory, and a plurality of flip-flop registers to perform arithmetic operations and transfers the...
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3629507 |
SOLID-STATE LINE KEYER
A solid-state line keyer used in a telegraph system isolates an input signal from a signal line. The keyer includes an oscillator responsive to the input signal to which is inductively coupled by...
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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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3596187 |
PULSE CODE GENERATOR
A pulse code generator for generating morse code logic having a voltage-controlled clock pulse generator, the output of which is coupled as a shift pulse to a digital shift register and through a...
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3585371 |
CONTROLLED SEQUENCE PROGRAMMING MEANS
A programming means comprises a magnetic shift register to which is applied a selected frequency of pulses, a diode pinboard or card reader is connected to the output of the shift register and...
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3555186 |
KEY-OPERATED TELEPRINTER
Key-operated teleprinter for the transmission of code symbols by the start-stop method, wherein each key triggers a further bit which has a first value and a second value for letters and numerals...
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3530239 |
INFORMATION ENCODING AND RECORDING SYSTEM
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3496294 |
CONVERTOR FOR TRANSMITTING UNINTERRUPTED MORSE CODE SIGNALS
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3491355 |
AUTOMATIC DATA SEQUENCER
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3484782 |
BIORTHOGONAL CODE GENERATOR
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3480729 |
APPARATUS FOR OBTAINING REDUCED TELECOMMUNICATION ALPHABETS AND CIRCUITS
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3449517 |
HALL EFFECT KEYER
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3441671 |
SWITCHING ARRANGEMENT FOR CODING AND CONVERTING INFORMATION SIGNALS
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3439118 |
KEYBOARD WITH CODE OUTPUT
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3396238 |
Automatic radio transmitting devices
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3361875 |
Apparatus for generating a telegraph signal
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3308918 |
Pseudo-interlock employing strobe signal with selected keys
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3305635 |
Multitone data transmission system with data bits comprised of combinations of data tones and rest tones
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3303283 |
Apparatus for positioning an indicating element in accordance with a digital code
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3300582 |
Solid state identification keyer
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3297149 |
Mechanical-electrical keyboard encoding device
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3296369 |
Communications equipment keyboard
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3293362 |
Encoding keyboard
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3284773 |
Magnetic coding apparatus
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3280256 |
Communication equipment set, keyboard, printer and recorder
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