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Method for Self-Adaptive Transparency Level Change in Transparent Display Disclosure Number: IPCOM000240977D
Publication Date: 2015-Mar-16
Document File: 3 page(s) / 52K

Publishing Venue

The Prior Art Database


Disclosed is a method for self-adapting opacity levels of a transparent display to improve the retrievability of information with minimal interference from background noise and overlays. The method identifies background colors and objects and monitors the user's eye movements and facial expression to detect when the user has difficulty reading, and then automatically changes the display to improve the readability of content.

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Method for Self-Adaptive Transparency Level Change in Transparent Display

Flexible and transparent displays are increasing in popularity for use with smart devices such as laptops, tablets, mobile phones, and other display devices. Transparency has benefits; however, it also presents some limitations and challenges.

Displaying information over other objects in the background can be used for augmented reality, for example, but it can also make the information difficult to read. Text in the background interferes with the readability of the information on the transparent display. Existing implementations work around this issue by adjusting the opacity of the "window" that is presenting additional information, making it less transparent. The bigger the window, the larger the block of display must be; this demands more energy to compensate for background noise and increases power consumption.

The novel contribution is a method to leverage existing technologies to determine whether the user is having difficulty reading the content on a transparent display, and then, if difficulty is detected, determine the most efficient size, color, and shape of the focus area to change the transparency level for the affected area.

The system components include:

 Electronic reader with transparent display

 Embedded front and rear cameras

 System application installed on an eReader

 Object recognition component used to determine what objects behind the screen might impact the user's ability to ready the content on screen

 Facial expression recognition component used to determine if the user is having trouble reading the content on screen

 Eye movement tracking application component used to determine the user's focus area (size and shape)

 Change background to opaque application component

The transparent display device includes a camera on the front side, used to track eye focus and facial expressions, and a camera on the back of the device to determine objects on which that device may be overlaid. Given that this is a transparent device, the front and back sides are interchangeable; the device can potentially be used from either side.

An object detection software identifies objects/content from the environment in the background that might interfere with the information displayed on the transparent screen. This includes the color of the objects in the background. A "difficulty-in-reading" sensor monitors the user's head and eye movement, reading behavior, facial expression, sentiment analysis, etc. to determine if the user is having difficulty reading the information on the screen. The device uses a front mounted camera to track the user's eye movements and identify the area of the screen on which the user is focusing (i.e. focus area). It then determines the field of view (i.e. size) of that focus area. The size varies depending on the user's distance from the display. The


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system calculates the user's line of sight t...