System and method for displaying and capturing images

• US 20080231763A1
• Filed: 03/21/2007
• Published: 09/25/2008
• Est. Priority Date: 03/21/2007
• Status: Abandoned Application

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Estevez, Leonardo William, Malina, James N.
• Application Number:
  US11/726,279
• Publication Number:
  US 20080231763A1
• Time in Patent Office: Days
• US Class Current: 348/744
• CPC Class Codes: H04N 9/3185 Geometric adjustment, e.g. keystone or convergence optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/3194 including sensor feedback

Abstract

A system for displaying and capturing images with a portable device includes a projector to project an image, a position sensor to determine positional information, and a processor coupled to the projector and to the position sensor. The processor adjusts the image based on the positional information. The position sensor detects the location and orientation of the portable device so that the processor adjusts the image to display only a portion of the image encompassing a point of view pointed to by the portable device. Displaying a portion of the image reduces projector complexity and processing/data requirements. The use of the position sensor may also help reduce processing/data requirements when capturing images.

Claims

1. An electronic device comprising:

a projector configured to project an image;

a position sensor configured to determine positional information; and

a processor coupled to the projector and to the position sensor, the processor configured to adjust the image based on the positional information.

2. The electronic device of claim 1, wherein the positional information comprises a location.

3. The electronic device of claim 2, wherein the processor is configured to compute a point of view from the positional information.

4. The electronic device of claim 1, wherein the image is translated and keystoned based on the positional information.

5. The electronic device of claim 1, further comprising a camera coupled to the processor, the camera configured to capture images.

6. The electronic device of claim 5, wherein the processor is further configured to compute a composite image based on images captured by the camera and positional information associated with each image.

7. The electronic device of claim 1, wherein the position sensor comprises a sensor selected from the group consisting of a gyroscopic sensor, a global positioning system sensor, an accelerometer, angular accelerometer, ultrasonic sensor, inductive position sensor, and combinations thereof.

8. The electronic device of claim 1, wherein the projector comprises a digital micromirror device-based projection display system.

9. The electronic device of claim 8, wherein the projector comprises:

a first projector configured to display a first portion of the image at a first resolution; and

a second projector configured to display a second portion of the image at a second resolution.

10. The electronic device of claim 1 further comprising a network interface coupled to the processor and to a communications network, the network interface configured to permit communications between the electronic device and other devices coupled to the communications network.

11. A method for displaying an image, the method comprising:

determining a current position;

adjusting the image based on the current position; and

displaying the image at a location based on the current position.

12. The method of claim 11, wherein the determining comprises:

determining a location of a device used to display the image; and

determining an angle of incidence.

13. The method of claim 11, further comprising after the determining, computing a difference between the current position and a previous location.

14. The method of claim 13, wherein the adjusting is based on the difference.

15. A method for capturing a sequence of images, the method comprising:

determining a current position;

capturing an image;

storing the image and the current position; and

repeating the determining, the capturing, and the storing for each image in the sequence of images.

16. The method of claim 15, wherein the determining, the capturing, and the storing occurs periodically.

17. The method of claim 15, wherein the capturing and the storing occurs in response to a determining that the current position has changed from a previous position by more than a specified amount.

18. The method of claim 15, further comprising, after the repeating, creating a composite image based on the images in the sequence of images and their respective current positions.

19. The method of claim 15, wherein the current position comprises a location and an angle of incidence.

20. The method of claim 15, wherein the current position is determined with an error margin, and wherein the capturing comprises capturing image data corresponding to a point of view as specified by the current position plus image data corresponding to the error margin.