Miniaturized 4-key computer keyboard operated by one hand
First Claim
1. A method for input of characters to electronic devices with a keyboard having four keys (or four other binary sensors) operated by four fingers of one hand, one key per finger, by performing so called “
- composite keystrokes”
, comprising the steps of;
pressing one of the four keys pressing a second key before the first pressed key is released, and then either releasing the key that was pressed first (so called “
rolling keystroke”
) or releasing the key that was pressed second (so called “
rocking keystroke”
) and finally releasing the remaining pressed key.
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Accused Products
Abstract
A miniaturized single-hand keyboard for computers, PDAs, cellular phones and other portable electronic devices. The keyboard has only four keys, each operated by one finger. Characters are generated by depressing a single key or a combination of two keys in a ‘composite keystroke’. A composite keystroke is performed by depressing a combination of two keys in a predefined order and then releasing them in a predefined order. In the normal mode, three simple keystrokes and 24 possible composite keystrokes are used to generate each of the 26 alphabetic characters and a space. One of the four simple keystrokes (optionally followed by another simple keystroke) is used to enter one of five other modes (Shift, Numeric, Language, Alternate and Control), which support generating uppercase, numeric, language specific and special characters and cursor control and editing control codes.
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Citations
6 Claims
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1. A method for input of characters to electronic devices with a keyboard having four keys (or four other binary sensors) operated by four fingers of one hand, one key per finger, by performing so called “
- composite keystrokes”
, comprising the steps of;pressing one of the four keys pressing a second key before the first pressed key is released, and then either releasing the key that was pressed first (so called “
rolling keystroke”
) orreleasing the key that was pressed second (so called “
rocking keystroke”
)and finally releasing the remaining pressed key. - View Dependent Claims (2, 3, 4, 5, 6)
- composite keystrokes”
Specification