Method and apparatus for wireless cursor position control

Patent 4578674 Issued on March 25, 1986. Estimated Expiration Date:

April 20, 2003. 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.

Abstract Claims Description Full Text

Patent References

3504334

3541521

Obstacle detecting apparatus using ultrasonic waves
Patent #: 4103278
Issued on: 07/25/1978
Inventor: Satake , et al.

Low-power, infrared information transmission system
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Dictating machine Patent #: 4426738
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Inventor: Sato

Inventors

Application

No. 06/486630 filed on 04/20/1983

US Classes:

345/159, Having variable cursor speed341/31, Photoelectric actuation356/3.14, Using at least a pair of viewing axes398/106, REMOTE CONTROL398/115, HYBRID COMMUNICATION SYSTEM (E.G., OPTICAL AND RF)398/130, Transmitter and receiver463/39Wireless signal

Examiners

Primary: Curtis, Marshall M.

Attorney, Agent or Firm

International Classes

G06F 3/033 (20060101)
G01S 15/87 (20060101)
G01S 15/02 (20060101)
G01S 15/46 (20060101)
G01S 15/00 (20060101)

Abstract

A method and apparatus for wireless cursor position control is disclosed herein. The apparatus comprises a wireless cursor position device and a separate control base whereby the direction and velocity of motion of the position device is monitored by the control base and used said direction and velocity of motion is to calculate the relative motion of the cursor on the display system. The method and apparatus operates by transmitting and receiving ultrasonic and infrared signals between the position device and control base and thereby calculating the movement of the position device from an initial location by measurement doppler shift of the signals. An output signal to the display system is then generated to move the cursor in correspondence with the motion of the position device.

Other References

William M. Newman and Robert F. Sproull, "Principles of Interactive Computer Graphics", McGraw-Hill Company, 2nd Edition, pp. 154-155
PCT/US81/00995, 2/18/82, Howells et al
Funk, B. D., "CCDs in Optical Touch Panels Deliver High Resolution, (9/80), pp. 139-143, Electronic Design, vol. 28
Lyon, R. F. et al, "Designing and Testing the Optical Mouse," VLSI Design, pp. 21-26 (Jan./Feb. 1982)
Fields, S. W., "Mouse Tracks Path by Electronics Only," Electronics International, vol. 55, No. 1, (Oct. 1982)