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Context Aware Input Device Power Management

IP.com Disclosure Number: IPCOM000200057D
Publication Date: 2010-Sep-24
Document File: 5 page(s) / 84K

Publishing Venue

The IP.com Prior Art Database

Related People

Murat Ozbas: INVENTOR

Abstract

Described herein is a framework for efficiently providing power to a touch sensing device by using context specific display and application data to selectively power down or efficiently operate specific regions of the touch sensing device. According to real-time display and/or application information the sensitivity and/or the active touch area of a touch sensor may be efficiently controlled.

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Context Aware Input Device Power Management Murat Ozbas

Context Aware Input Device Power Management

1. Inventor(s): Murat Ozbas
2. Synaptics Incorporated, Santa Clara, CA, USA

3. Short Summary

Described herein is a framework for efficiently providing power to a touch sensing device by using context specific display and application data to selectively power down or efficiently operate specific regions of the touch sensing device. According to real-time display and/or application information the sensitivity and/or the active touch area of a touch sensor may be efficiently controlled.

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Figure 1. An example of a touch sensor under normal operation (left) and under efficient power operation (right).

Copyright © 2010 Synaptics Incorporated, All Rights Reserved. Page: 1 of 5

Information contained in this publication is provided as-is, with no express or implied warranties, including any warranty of merchantability, fitness for any particular purpose, or non-infringement. Synaptics Incorporated assumes no liability whatsoever for any use of the information contained herein, including any liability for intellectual property infringement. This publication conveys no express or implied licenses to any intellectual property rights belonging to Synaptics or any other party. Synaptics may, from time to time and at its sole option, update the information contained herein without notice.


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Context Aware Input Device Power Management Murat Ozbas

4. Some Problems Solved

Examples of some of the problems addressed by the invention include:

There are times when user interaction with a touch screen device is limited to only a fraction of the total touch screen area. For example, a GUI element may be displayed on only a small portion of the screen as shown in Figure 1. If the touch screen device is provided information regarding the expected regions of interaction based on the GUI element coordinates, then the touch sensor device could operate only the regions where the interaction is expected; hence reducing the total power required for touch sensing during a particular interaction. A mechanism is provided for reducing the power consumption of the touch sensor device in applications where the user input is or can be clearly constrained to a region that is a fraction of the total touch area.

In one example, a touch sensitive device (e.g. tablet, slate, mobile device, etc) may be used as an e- reader where very limited touch operation is expected, such as a gesture at the bottom of the screen to flip to the next page. One method for reducing power consumption by the touch screen device is to reduce the refresh rate of the sensor device. Another method may be to sense touch in small but defined active touch areas.

Copyright © 2010 Synaptics Incorporated, All Rights Reserved. Page: 2 of 5

Information contained in this publication is provided as-is, with no express or implied warranties,...