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METHOD FOR INSTANT MESSAGING NAVIGATION IN MOBILE DEVICES

IP.com Disclosure Number: IPCOM000244648D
Publication Date: 2016-Jan-04
Document File: 6 page(s) / 205K

Publishing Venue

The IP.com Prior Art Database

Related People

Mingfeng Yang: AUTHOR [+4]

Abstract

A method is presented herein to navigate in instant messaging application in mobile devices which is fast and accurate. Unlike flipping up and down, spiral circular gesture is a closed operation (running in a loop) which is more suitable for finger operation. Variable radius in a spiral gesture provides both fast speed and accuracy.

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METHOD FOR INSTANT MESSAGING NAVIGATION IN MOBILE DEVICES

AUTHORS:

Mingfeng Yang Yasi Xi Kent Chen

Ken Huang

CISCO SYSTEMS, INC.

ABSTRACT

    A method is presented herein to navigate in instant messaging application in mobile devices which is fast and accurate. Unlike flipping up and down, spiral circular gesture is a closed operation (running in a loop) which is more suitable for finger operation. Variable radius in a spiral gesture provides both fast speed and accuracy.

DETAILED DESCRIPTION

     Scrolling is a widely used method to display continuous messages in instant messaging applications. In mobile devices, this involves just moving fingers up or down on a touch-screen. Sometimes, there could be numerous messages in a collaboration group, and moving page by page to navigate to some message is cumbersome. If you move too fast, you may skip the message you are looking for. If you move too slowly, the entire process can take too long. A new method is presented herein to navigate to a message quickly and conveniently.

    The method involves navigating by a spiral gesture with different speed and radius. See Figure 1 below.

Copyright 2016 Cisco Systems, Inc.

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Figure 1

The operation is as follows.

1) Tap screen with two fingers to switch to scrolling mode

2) Repeat spiral gesture by single finger in scrolling mode

3) Tap screen with two fingers again to exit scrolling mode

The spiral gesture is made clockwise to scroll up or anti-clockwise to scroll down.

     As illustrated by Figure 2 below, arcs with the same angle (in degrees) but different radius have different lengths. The bigger the radius, the longer the length.


l1 = alpha * r1


l2 = alpha * r2

l3 = alpha * r3

As the bigger radius is fanned, the longer distance is scrolled up or down.

Similarly, the bigger the radius of the spiral gesture, the faster the scrolling up or down.
Figure 2 below illustrates arcs with different radii.

Copyright 2016 Cisco Systems, Inc.

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Figure 2

    Three points which are not on the same line will make a unique circle that passes through the three points. See Figure 3 below in which three points not in a line make a unique circle with fixed fan alpha and radius r.

Figure 3

    As shown in Figure 4 below, in scrolling mode, finger points are captured every delta_t milliseconds and to obtain a sample point sequence of P1, P2 ... P14. Every three neighboring sample points make a unique circle with fixed radius and angle. For example, P1, P2 and P3 make a circle with r1 and alpha1 while P9, P10 and P11 make a

Copyright 2016 Ci...