Software converts the coordinates to identify actions or characters.
A sensor or camera in the projector picks up finger movements. Design Ī laser projection keyboard used with a tabletĪ laser or beamer projects visible virtual keyboard onto level surface. Ī proposed system called the P-ISM combines the technology with a small video projector to create a portable computer the size of a fountain pen. In 2002, start-up company Canesta developed a projection keyboard using their proprietary "electronic perception technology." The company subsequently licensed the technology to Celluon of Korea.
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Mechanical input units can be replaced by such virtual devices, potentially optimized for a specific application and for the user's physiology, maintaining speed, simplicity, and unambiguity of manual data input. In that way, it can emulate unlimited types of manually operated input devices (such as a mouse, keyboard, and other devices). It optically detects and analyses human hand and finger motions and interprets them as operations on a physically non-existent input device like a surface with painted or projected keys.
Some connect to Bluetooth devices, including many of the latest smartphone, tablet, and mini-PC devices with Android, iOS or Windows operating system.Īn optical virtual keyboard was invented and patented by IBM engineers in 1992. A projection keyboard is a form of computer input device whereby the image of a virtual keyboard is projected onto a surface: when a user touches the surface covered by an image of a key, the device records the corresponding keystroke.
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