System and method for communication with enhanced optical pointer

• US 6,952,198 B2
• Filed: 02/28/2002
• Issued: 10/04/2005
• Est. Priority Date: 07/06/1999
• Status: Expired due to Fees

• Current Assignee: SyncPoint Imaging, LLC
• Original Assignee: Karl C. Hansen
• Inventors: Hansen, Karl C.
• Primary Examiner(s): Eisen, Alexander
• Application Number:
  US10/085,287
• Publication Number:
  US 20030169233A1
• Time in Patent Office: 1,314 Days
• Field of Search: G09/G00.5/00, 345/156, 345/158, 345168-172, 341 20- 26
• US Class Current: 345/158
• CPC Class Codes: G06F 3/0386 for light pen

Abstract

A system and method for communicating information to a remotely located computer include encoding the information using a plurality of features of an optical pointer, transmitting the encoded information to a remote location using the optical pointer, detecting the plurality of features of the optical pointer, decoding the information based on the detected plurality of features of the optical pointer, and generating a command for the remotely located computer based on the decoded information. In one embodiment, a computer presentation system includes a computer, a screen associated with the computer for displaying output from the computer, and a camera in communication with the computer and positioned to capture a plurality of image frames including at least a portion of the screen associated with the computer. The system and method may be used to transmit any type of information including keyboard characters, voice data, or to uniquely identify a pointer for secure operation or simultaneous use of multiple pointers.

Claims

1. A method for remotely controlling a computer, the method comprising:

displaying output from the computer on a remotely located screen;

encoding keyboard information by modulating one or more optical pointer features;

projecting the encoded keyboard information on the remotely located screen;

capturing a plurality of image frames including at least a portion of the remotely located screen;

processing image frames to detect and decode the encoded keyboard information transmitted by the optical pointer; and

generating a command to control the computer based on the decoded information.

2. The method of claim 1 further comprising:

encoding voice information by modulating one or more optical pointer features.

3. The method of claim 1 wherein the step of processing comprises detecting a change in orientation of the optical pointer.

4. The method of claim 1 wherein the step of processing comprises detecting a pattern of movement, a change in orientation, or a change in size of the optical pointer, and wherein the step of generating a command comprises generating a sequence of commands.

5. The method of claim 1 wherein the step of processing comprises detecting a pattern of movement of the optical pointer.

6. The method of claim 5 wherein detecting a pattern of movement comprises detecting a change in size of an optical pointer feature.

7. The method of claim 6 wherein detecting a pattern of movement comprises detecting an increased size of an optical pointer feature and wherein the step of generating a command comprises generating a zoom command for the computer.

8. The method of claim 5 wherein the step of generating comprises generating a scroll command for the computer.