Browse Prior Art Database

Original Publication Date: 2001-Apr-13
Included in the Prior Art Database: 2001-Apr-13
Document File: 1 page(s) / 5K

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Chua Yong Tong: AUTHOR



This text was extracted from a RTF document.
This is the abbreviated version, containing approximately 100% of the total text.


by Chua Yong Tong

The objective of this invention is to introduce an intelligent backlighting to used in conjunction with portable communication device having display and a Micro Browser which is used to navigate the Internet. With this invention, backlighting of on the display is automatically switched ON when the display is about to display data.

Micro Browsers are used in cellular phones or smart phones and allow a user to have internet access capability. Currently, this is accomplished by connecting such a phone through a WAP server via Circuit Switch Data services that are provided by in GSM mobile phone infrastructure. Similar to Internet browsers used on personal computers, a Micro Browser allows a user to browse and request information on the Internet. The Micro Browser is currently implemented on small liquid crystal display (LCD) which has backlighting provided for low lighting conditions.

Usually, to minimize battery usage, the backlighting is automatically turned OFF after a predetermined idle time. As with Internet browsers on a personal computer, a user must wait for some time to download a page from the Internet when there is heavy internet data traffic.

In the wireless environment, this is worsened by busy GSM traffic channel, slow baud rate bearer, and possible weak signal environment. Thus, a problem arises when the backlighting automatic switch OFF time is shorter than the time to download a page.

To illustrate this, when user requests for "world news", after a specific timeout duration, the backlight will be automatically switched OFF and this causes the Micro Browser to display the downloaded information without the backlight switched ON. This can be a source of annoyance to the user under very low lighting conditions.

A Message Sequence Chart, FIG. 1, is provided showing how auto-backlighting is introduced in step number 3 in the current Browser:

1. Mobile phone user launches the Micro Browser on this mobile phone, the backlight is switched ON automatically, and the mobile phone initiates a connection request to a System Server.

2. The backlight is automatically switched OFF when a backlight timer expires, and when there is no response from the System Server.

3. The System server responds with a connected status and data packets, and the backlight is automatically switched ON.

4. The Micro Browser displays the data received from the System Sever with the backlight switched ON.

If step number 3 is missing, the browser will display data with backlight off.

[See the accompanying PDF file for the Figure]