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Scroll Wheel Ballistics Based on Scroll List Size

IP.com Disclosure Number: IPCOM000029777D
Publication Date: 2004-Jul-12
Document File: 2 page(s) / 37K

Publishing Venue

The IP.com Prior Art Database

Related People

Sarangan Narasimhan: INVENTOR

Abstract

This invention applies to the use of scroll wheels to search through lists. It involves factoring in the length of a scroll list into cursor ballistics when determining scroll speed for the list. This would improve a user's experience by allowing a long list to be traversed more quickly and by reducing the possibility of overshooting the target in a short list.

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Scroll Wheel Ballistics Based on Scroll List Size

1.    Inventor: Sarangan Narasimhan

2.    Synaptics Incorporated, San Jose, CA, USA

3.    Short Summary

This invention applies to the use of scroll wheels to search through lists. It involves factoring in the length of a scroll list into cursor ballistics when determining scroll speed for the list.  This would improve a user’s experience by allowing a long list to be traversed more quickly and by reducing the possibility of overshooting the target in a short list.

4.    General Description

This invention applies to the use of scroll wheels to search through a list. This could prove especially useful with the increasing popularity of such input devices in portable music and media players such as the Apple iPod, where there is frequent need for scrolling through very long lists of several thousand songs with a one-dimensional sensor.

Current ballistics algorithms respond to the speed of a user’s finger on the wheel and adjust scrolling up or down the list accordingly. While this is a useful feature, users with short lists to scroll through may easily overshoot their targets in the lists (e.g. the desired songs on an iPod). Similarly, users with long lists may end up ‘spinning’ the wheel for long periods to reach their targets, which are frustrating experiences.

This invention proposes using the length of the list as one of the variables in the ballistics algorithm to determine scroll speed through the list. Thus users with long lists could reach the ends of their lists very quickly and reduce the nu...