Inventions on GUI for eye cursor systems-updated

Computer interfaces such as mouse, track balls, and light pens etc. provide users with a way of controlling and manipulating the display of information on a computer screen. Although a mouse is popular and effective it has disadvantages typically in the circumstances where; ⇛ The user wants to use hands for other purpose, e.g., the user wants to use keyboard for typing simultaneously. ⇛ The user requires a hands-free environment ⇛ The user is physically challenged or handicapped as to the use of his or her hands. For example, a medical doctor who is performing medical or surgical procedure with his hands may benefit from such an eye ball controlled system to scroll and view the CAT Scan, S-Ray images, Patient Charts or reference medical text books etc. Similarly automobile mechanics or electrical technician or assembly line workers who are working on their primary job with their hands can simultaneously refer to a manual or other special instructions without moving their hands out. Eye tracking devices are based on Video or Image Processing. There may be two different types of Eye Tracking devices, one with an attachment to human head, another without any attachment. The tracking device with an attachment requires the device to be attached to human head in order to track the movement of the user's eyes. But users typically don't prefer to wear attachments on them in order to track the movement of their eyes. This could be because the attachments are uncomfortable to wear or not aesthetically pleasing or fashionable. The non-attached eye tracking systems place a device/ camera on the monitor. An example of such a non-attached device is developed by LC Technologies However, a problem with these non-attached eye-tracking devices is that they allow the movement of the user's head only within a limited range. A better eye-tracking device should allow head movement without head attachment. US Patent 6351273 (illustrated below) provides a non-attached eye tracking system, which works without restricting the movement of user's head. The eye mouse devices use movement of the eyes of the user to accomplish the movement of the cursor. Some earlier Eye Mouse Devices still require Manual or Foot Activation to control the display of information, text, images or data. The main disadvantage is that they still require the use of user's hand or foot. The Eye Mouse Devices were further improved to control the cursor movement by …