222701 ⎘
Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys; Static coding using analogue means, e.g. by coding the states of multiple switches into a single multi-level analogue signal or by indicating the type of a device using the voltage level at a specific tap of a resistive divider
MEASURING SYSTEM
#2Device for encoding information between a plurality of switches of an operating lever and a control device
#3Input device and electronic apparatus
#4Press-button circuit and driving method thereof, keypad, and display device
#5Packaged semiconductor devices with multi-use input contacts and related methods
#6Electronic apparatus comprising a linear keypad
#7Input device
#8Electronic device with keys and voltage detecting method thereof
#9Apparatus and methods for digital configuration of integrated circuits
#10ELECTRONIC DEVICE AND DISPLAY DEVICE
#11SIGNAL GENERATION CIRCUIT FOR KEYBOARDS
#12Surgical generator for ultrasonic and electrosurgical devices
#13Input device and method for detecting switch of input device
#14APPARATUS FOR PROCESSING KEY INPUT USING INTERRUPT
#15Switch-state information aggregation
#16Resistor-programmable device at low voltage
#17PORTABLE CHARACTER INPUT APPARATUS AND METHOD USING CHANGE IN TENSION OF STRINGS CONNECTED TO FINGERS
#18PHONE WITH QWERTY KEYPAD HAVING A CONNECTION FOR LINKING TO A COMPUTER
#19Input unit of portable terminal, portable terminal using the same, and operation method thereof
#20Key input device
#21Switch circuit
#22Key input device
#23SWITCH STATE DETECTOR AND ENCODER
#24Uniquely identifiable keys for electronic keyboards
#25Method and structure for implementing a resistor ladder
#26Switching circuitry and switching system
#27Jack detection circuit
#28Switching device with critical switch detection
#29Key input device
#30Two-wire connection to a key matrix in a mobile device
#31Key input apparatus and method
#32Control module, related control chip and identifying method thereof
#33Button device
#34Keypad signal input apparatus
#35Relaxation oscillator based keypad decoder
#36Data input device
#37Relaxation oscillator based keypad decoder
#38Continuously actuatable keys pertaining to a keyboard comprising an integrated signal detection element, and method for signal processing
#39INPUT DETECTION DEVICE AND RELATED METHOD
#40Apparatus and method for inputting key signals to optical disk player using analog signal
#41Electronic device with multiple buttons
#42Apparatus and method of interruptible analog input
#43Minimizing end boundary resistance in a programmable resistor of an integrated circuit
#44Key inputting circuit of electronic device
#45High-linearity switched-resistor network for programmability