Interactive display system
September 5, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3857022 Remote pointing system Video communication system allowing graphic additions to the images communicated Automatic touch screen calibration method Microfilm reader scanner capable of editing image Computer controlled, overhead projector display Alignment of double eccentric aiming system for solid state camera Method and system for data display and input via display screen Data conferencing arrangement for stations having keyboards and displays, using a keyboard buffer and a screen buffer Electronic blackboard and accessories such as writing tools InventorAssigneeApplicationNo. 780052 filed on 10/21/1991US Classes:345/173, Touch panel178/18.03, Writing digitizer pad345/178With alignment or calibration capability (i.e., parallax problem)ExaminersPrimary: Brier, JefferyAssistant: Goon, Gin Attorney, Agent or FirmInternational ClassG09G 005/00AbstractAn interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals and in response generating graph images, and an LCD panel in combination with an overhead projector for receiving and projecting the graphic images onto the touch sensitive display surface at the indicated locations. The LCD panel and overhead projector may be provided an an integral unit.Other References
Field of SearchTouch panelIncluding impedance detection Including optical detection Transparent substrate having light entrapment capability (i.e., waveguides) Including surface acoustic detection With alignment or calibration capability (i.e., parallax problem) Stylus Light pen for CRT display Light pen for fluid matrix display panel Light pen for controlling plural light-emitting display elements (e.g., LED, lamps) | |
