Browse Prior Art Database

Multiple Function Keypad

IP.com Disclosure Number: IPCOM000035384D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Decker, WC: AUTHOR

Abstract

A keypad with a limited number of keys can be given greater capability by reserving one to be a "functional level" key to be depressed and held one or more times while remaining keys enter values or functions.

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Multiple Function Keypad

A keypad with a limited number of keys can be given greater capability by reserving one to be a "functional level" key to be depressed and held one or more times while remaining keys enter values or functions.

For example, one key of a twelve-key pad having a three hex digit display can be reserved as the Alternate key and the display "borrowed" briefly to show the level of the Alternate key. Without depression of the Alternate key, eleven functions or values are attainable by depression of the remaining keys.

Upon depressing the Alternate key and holding it depressed, eleven additional functions or values can be displayed. The display is also temporarily borrowed for a brief time, such as a quarter or half second, to indicate the level of the Alternate key upon its depression, such as Level 2. The original displayed application data are then restored.

The Alternate key can be depressed repeatedly to reach other levels as more functions are required. To reach other levels, the operator must release the Alternate key and press it again within an assigned period, for example a half second. If the Alternate key is not held depressed, key functions at the lowest level become effective.

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