222700 ⎘
Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys Static coding
Sub-classes:METHOD AND APPARATUS FOR TESTING CIRCUIT BOARD
#2CIRCUIT AND ASSOCIATED METHOD IDENTIFYING KEYS AND IMPLEMENTING KEYPAD
#3Text entry device with radial keypad layout
#4Microcomputer system
#5Keypad and method of assembly of same
#6Key coding circuit
#7Microcomputer system
#8Group keypads in compliance with standard keyboard installation
#9Text entry device with radial keypad layout
#10KEYBOARD DEVICE AND METHOD FOR IDENTIFYING DIFFERENT KEY FUNCTIONS ON THE KEYBOARD DEVICE
#11APPARATUS AND METHOD FOR KEYPAD OF PORTABLE TERMINAL
#12Keypad and method for identifying keystrokes of a keypad
#13SWITCH STATE DETECTOR AND ENCODER
#14Input apparatus
#15BINARY KEYPAD APPARATUS AND METHOD FOR PORTABLE TERMINAL
#16Keypad signal input apparatus
#17Key sensor in mobile station