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Method for Dynamic Text Entry in Mobile Devices

IP.com Disclosure Number: IPCOM000173434D
Original Publication Date: 2008-Aug-05
Included in the Prior Art Database: 2008-Aug-05
Document File: 1 page(s) / 36K

Publishing Venue

IBM

Abstract

Disclosed is a device (system, circuit, etc.) for dynamic text entry in mobile devices. With the increasing use of text entry on mobile devices such as cellular phones, many users have experienced the difficulties of 9-key text entry systems. One common form of text entry is the T9* system, which is a predictive system allowing the user to enter a word with a single keypress per letter. Each numeric key represents a group of letters, and a sequence of keystrokes will map to one or more words as defined by the device’s spelling dictionary. Drawbacks of this system and its main competitors are the following: 1. The numeric key structure is not intuitive for text entry users who wish to become proficient with this method must spend considerable time acquiring what is essentially a new form of typing skill. 2. The numeric key layout usually only facilitates use of the thumbs for key press, whereas more time-efficient methods such as the standard keyboard allow use of multiple fingers. Other alternatives use a full QWERTY** keyboard with very small keys. This method faces similar drawbacks. Users typically can only use their thumbs to type and must be able to see the keyboard to type, whereas many people can use a standard keyboard without watching their hands.

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Method for Dynamic Text Entry in Mobile Devices

A new dynamic text entry method could be created such that letter groups were more intuitively mapped to the standard QWERTY keyboard, allowing many users to effectively use a skill set that they already possess for more rapid, efficient text entry. This would also allow users to employ a more natural typing position by utilizing all fingers rather than limiting typing to the thumbs.

A modified keypad layout could be used, such as the one pictured below:

Character groups would, by default, be selected to replicate the sets of characters which each finger typically types on a standard keyboard. Since some users have slight variations in methods, these letter groups should be dynamic in nature such that a user can modify the set of characters associated with each key. For example, the letter 'B' is normally typed with the left index finger, but some users may choose to type this character with the right index finger and would thus prefer to use the corresponding key to which they're accustomed.

An algorithm similar to that of T9 should be used such that a series of keystrokes maps to a set of words in the device' s dictionary; however, the set of letters associated with a key must remain dynamic and allow for user modifications. For example, 'brick' could be 44838 for a user who types 'b' with the l...