On Thursday the U.S. Patent and Trademark Office, published a new patent application, submitted by Google on June 26, 2012, titled - Methods and Systems for a Virtual Input Device.
From the abstract:
As you can see from the above abstract, Google is about to let the users of devices such as Google Glass to type on their hands by projecting a vertical keyboard on it.
According the patent background description, Google stated that:
- A projection keyboard is a virtual keyboard that can be projected onto a surface and components of the keyboard detect finger movements and translate the movements into keystrokes on a device. A projection keyboard unit generally includes a laser to project a visible virtual keyboard onto a surface (e.g., a red diode laser as a light source to project a full size QWERTY layout keyboard, with a size of 295 mm.times.95 mm projected at a distance of 60 mm from the projection keyboard unit), and a sensor or camera to sense finger movements.
- A projection keyboard may also use a second (invisible infrared) beam projected above the virtual keyboard. In this example, as a finger makes a keystroke on the virtual keyboard, the finger breaks the infrared beam and infrared light is reflected back to a camera.
- A projection keyboard may include use of a micro-controller to receive positional information corresponding to reflected light or light flashes from the sensor, and to interpret events to be communicated through an appropriate interface to external devices.