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7446691 |
Methods and apparatus for multiplexed signal sources using an analog-to-digital converter
A multiplexing circuit uses parallel-configured pairs of resistors and signal sources in a voltage divider network in such a way that a single analog-to-digital input can be used to specify the...
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7248195 |
Methods and apparatus for multiplexed digital inputs using an analog-to-digital converter
A multiplexing circuit uses parallel-configured switch/resistor pairs in a voltage divider network in such a way that a single analog-to-digital input can be used to specify the state of more than...
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7064682 |
Relaxation oscillator based keypad decoder
The keypad interface element of this invention uses a relaxation oscillator and a digital keypad processor having a counter/timer to decode specific keys. The RC portion of the relaxation...
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6912605 |
Method and/or apparatus for implementing security in keyboard-computer communication
A method for altering timing between transmissions of an input device comprising the steps of (A) receiving a plurality of inputs from the input device, (B) altering the timing between the inputs...
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6715086 |
Data processing system and method having time-span support for input device driver
A time-enhanced input device driver for a data processing system is capable of generating time-enhanced output in response to input signals. The input device driver receives a first input-event...
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6603410 |
Reproducing arrangement for the reproduction of compressed data in a multi-speed reproducing mode
A reproducing arrangement ( 1; 14 ) is adapted to reproduce compressed data (KD) included in data blocks (DB) of a data stream (DS) in a normal speed reproducing mode and in a multi-speed...
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6538595 |
System and method for using infrared remote control packet delivery in a wireless keyboard having a pointing device
An infrared (IR) keyboard having a communication protocol and a method for operating same includes circuitry for converting a standard recognized keystroke into a corresponding IR data word for...
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6369803 |
Active edge user interface
An active edge user interface includes dynamically configurable flexible touch areas positioned near the perimeter of a display to support interactive communication between a user and a user...
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6212412 |
System and method for character case control in a wireless communication device
A technique to switch between upper and lowercase alphabetic characters in a wireless communication device measures the period of time in which a numeric key is held in the depressed position by...
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4891786 |
Stroke typing system
A storage method and control system for creating linguistic expressions such as natural language text by both sequential and simultaneous keypresses. The system controls a programmable digital...
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4814741 |
Digital remote control device
A digital remote control device for use in a transmitter capable of transmitting an end code following each transmission code, which includes a counting circuit for counting the number of...
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4680729 |
Method and apparatus for storing and updating user entered command strings for use with otherwise unassigned softkeys
The assignment of user entered strings to blank softkeys within a node or menu is automatic. As the user enters a command string, the new information is checked against the information on all of...
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4673919 |
Manual control device
Improvements in a manual control device wherein an incremental touch key or a decremental touch key is depressed by hand so as to bring a manipulated value and a set value into agreement. The...
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4670747 |
Alphanumeric entry system having an electronic lock feature
An alphanumeric entry system which is provided with an electronic lock-out feature. The keypad entry system of the present invention comprises an alphanumeric keypad having function keys and...
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4660034 |
Information input machine
An input machine for inputting information corresponding to a desired item, comprising a plurality of guide plates arranged substantially parallel to each other and lying substantially on a single...
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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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4647911 |
Calculator with definable keys
A programmable calculator is disclosed which has a plurality of keys each having a unique definition as an input key for introduction of instruction statements and constants through associated...
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4639554 |
Dual-tone multiple-frequency-signal generating apparatus
A dual-tone multiple-frequency (DTMF)-signal generating apparatus of the present invention is provided with a high-group frequency divider and a low-group frequency divider for dividing a reference...
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4632001 |
Polyphonic electronic musical instrument performing D/A conversion of tone waveshape data
A tone generation circuit can generate digital tone signals in a plurality of channels on a time shared basis and these digital tone signals are supplied to a digital-to-analog converter provided...
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4595798 |
Telephone number input terminal devices
Improved telephone number input terminal devices for memory stored dialing data for automatic dialing have a divided housing (12) with an upper section (13) that is readily attached to and removed...
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4521870 |
Audio/video system having touch responsive function display screen
An audio/video editing system presents different menus of editing functions on a display screen and changes the menus as well as performing different editing functions in response to the touching...
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4251805 |
Circuit arrangement for an input keyboard
A keyboard switch matrix has a plurality of column and row wires and switches having only two poles and no interconnecting diodes for selectively connecting one of said columns to one of said rows....
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4179748 |
Programmer and method of storing information therein and accessing information therefrom
A programmer unit which is connected to the keyboard of a machine is capable of storing, as a program, the sequential occurance of key closures, and of supplying simulated key closures through the...
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4132871 |
Digitally synthesized multi-frequency signal generator
A solid state signal generator for producing frequency combinations such as used in multi-tone telephone systems. The output of a crystal oscillator is divided to obtain binary signals proportional...
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4119957 |
Digital display for cooking time and power of electric cooking device
A digital display apparatus for indicating a cooking time and power of an electric cooking device by means of common digital indicators, wherein a first group of AND gates is connected between a...
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4101871 |
Touch-tone encoder unit for mobile radio transmitter
A touch-tone encoder unit is provided for a mobile radio transmitter which is constructed as a single unitary package comprising a keyboard, a first printed circuit board positioned adjacent to the...
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4092599 |
Annunciator communication system
An annunciator communications system in which any one of a plurality of identical transmitting-receiving units can communicate to the rest through minimum communication links, such as power...
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4075621 |
Hand held communication aid for the dumb
A hand held communication aid for the dumb includes a casing, containing a keyboard, which is easily held in one hand and the keyboard positioned to be operated by the other hand of the user or...
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4056692 |
Digital tone generator
A stable generator produces a reference square wave signal having a stable given frequency. Logic circuitry is coupled to the generator to provide a plurality of square wave signals each having a...
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4038640 |
Interactive control system
A control system for an electronic data processing system minimizes hardwiring and specialized components and circuits and provides bidirectional communication between a data processor within the...
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3942175 |
Multipurpose keyboard system
A system for varying the function of a keyboard using a plurality of status keys to select a function. The status keys form a binary which are decoded in a first word decoder forming a single word...
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3715746 |
KEYBOARD INPUT DEVICE
An input device comprising a keyboard circuit arrangement and an input signal converting circuit unit wherein junction terminals therebetween are advantageously reduced to a small number. To this...
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3573807 |
DIGITAL ENCODER APPARATUS
A matrix of switches is arranged in columns and rows with separate column and row conductors coupling, in parallel, all the switches of the respectively associated column and row. A closed switch...
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3508013 |
KEYBOARD FOR TELEPHONE DIALING UTILIZING IMPEDANCE VARIATION
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3496563 |
CODE GENERATOR
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2801406 |
Alphabetic-numeric data processor
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RE13800 |
Title is not available
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