Image or video display devices

• US 7,545,952 B2
• Filed: 10/23/2007
• Issued: 06/09/2009
• Est. Priority Date: 04/24/2001
• Status: Expired due to Term

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Brundage, Trent J., Hannigan, Brett T., Rodriguez, Tony F.
• Primary Examiner(s): Couso; Jose L
• Application Number:
  US11/877,450
• Publication Number:
  US 20080260201A1
• Time in Patent Office: 595 Days
• Field of Search: 382/100, 382/232, 358/3.28, 380/52, 380/54, 380/270, 396/310, 283 72- 75, 283/85, 283/93, 283/113, 283/901, 340/5.26, 340/5.65, 340/5.8, 340/5.86, 455/556.1, 235/494, 356/71, 707/9, 707/101, 705/44, 705/50, 705/57, 709/229, 713/165, 713/167, 713/176, 713/179, 359/642, 359/707, 257/427, 257/E27.132, 438/57, 345/626, 345/627, 345/634, 902/10, 726/19
• US Class Current: 382/100
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G07D 7/0034 using watermarks
• CPC Class Codes: G07D 7/162 Length or width
• CPC Class Codes: G09B 21/003 using tactile presentation of the information, e.g. Braille displays

Abstract

The present invention relates generally to image or video display devices. For example, there are many devices (e.g., cell phones, video games, calculators, positioning systems and personal computing devices) that include such display devices. One claim recites a device including: an image or video display including a first set of elements and a second set of elements, the first set of elements being varied relative to at least the second set of elements, the first set of elements being arranged to provide a plural-bit device identifier obtainable from optical scan data representing at least a portion of the image or video display, the first set of elements and the second set of elements being arranged so as to conceal the presence of the plural-bit device identifier from a human observer of the display. Of course, other claims and combinations are provided as well.

Claims

1. A device comprising:

an image or video display including a first set of elements and a second set of elements, the first set of elements being varied relative to at least the second set of elements, the first set of elements being arranged to provide a plural-bit device identifier obtainable from optical scan data representing at least a portion of the image or video display, the first set of elements and the second set of elements being arranged so as to conceal the presence of the plural-bit device identifier from a human observer of the display.

2. The device of claim 1 further comprising electronic circuitry to energize at least the first elements so as to change the plural-bit device identifier.

5. The device according to claim 1 wherein the first set of elements comprises a first filter.

6. The device according to claim 5 wherein the second set of elements comprises a second filter.

7. The device of claim 1 wherein the device comprises a handheld device.

3. A device comprising:

an image or video display including a first set of elements and a second set of elements, wherein the first set of elements comprises micro-lenses, the first set of elements being varied relative to at least the second set of elements, the first set of elements being arranged to provide a plural-bit device identifier obtainable from optical scan data representing at least a portion of the image or video display, the first set of elements and the second set of elements being arranged so as to conceal the presence of the plural-bit device identifier from a human observer of the display.

4. The device of claim 3 wherein the second set of elements comprises micro-lenses.

8. A device comprising at least an image or video display, the image or video display including at least a first set of pixel elements, the first set of pixel elements being arranged to provide a machine-readable, plural-bit device identifier obtainable from optical scan data representing at least a portion of the image or video display, the device identifier uniquely identifies the device or device type.

9. The device according to claim 8, where the image or video display further comprises a second set of pixel elements, where the first set of pixel elements are varied relative to at least the second set of pixel elements.

10. The device according to claim 9, the first set of pixel elements and the second set of pixel elements being arranged so as to conceal the presence of the machine-readable, plural-bit device identifier from a human observer of the display.

11. The device according to claim 8 where the first set of pixel elements comprises micro-lenses.