Method and system for tactile display

• US 8,411,058 B2
• Filed: 08/26/2010
• Issued: 04/02/2013
• Est. Priority Date: 08/26/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Wong, Ling Jun, Xiong, True
• Primary Examiner(s): Chang, Kent
• Assistant Examiner(s): Au, Scott
• Application Number:
  US12/869,558
• Publication Number:
  US 20120050172A1
• Time in Patent Office: 950 Days
• Field of Search: 345173-177, 345/179, 178 1801- 1811, 178/19.01, 715/701, 715/702, 715/865, 434113-114
• US Class Current: 345/173
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G09B 21/004 Details of particular tactile cells, e.g. electro-mechanical or mechanical layout

Abstract

A system and method for a touch display system. The a touch display system includes: a flat touch display assembly including a matrix of flat Braille pixels, wherein each flat Braille pixel is operable to be placed in one of two states. A heating source is selectively connected to each flat Braille pixel. A cooling source selectively connected to each flat Braille pixel. The flat Braille pixels are configured to represent images to touch by selective heating and cooling thereof. In one embodiment, the above described display can be used in combination with software that automatically converts text to Braille which is displayed using the flat touch display assembly.

Claims

1. A touch display system comprising:

a flat touch display assembly comprising a matrix of flat Braille pixels, wherein each flat Braille pixel is operable to be placed in one of two states while remaining flat in both states, the states including a first state in which the flat pixel has a first temperature and a second state in which the flat pixel has a second temperature lower than the first temperature;

a heating source selectively connected to each flat Braille pixel to render the pixel into the first state; and

a cooling source selectively connected to each flat Braille pixel to render the pixel into the second state.

2. The system of claim 1 further comprising a plurality of Braille cells wherein each Braille cell comprises a plurality of said flat Braille pixels.

3. The system of claim 1 wherein:

said flat touch display assembly is a touch image display; and

said matrix of flat Braille pixels is disposed to represent images to touch.

4. The system of claim 1 wherein said heating source is configured to represent Braille text by selectively heating a plurality of said flat Braille pixels.

5. The system of claim 1 wherein said cooling source is configured to represent the absence of Braille text by selectively cooling a plurality of said flat Braille pixels.

6. The system of claim 1 further comprising a convertor for converting text into Braille data format for display on said flat touch display assembly, and a plurality of said flat Braille pixels, wherein said plurality of said flat Braille pixels is configured to represent images to touch by selective heating and cooling thereof.

7. The system of claim 1 further comprising a heat conducting material configured to selectively connect said heating source and said cooling source to said matrix of flat Braille pixels.

8. A method comprising:

heating a first plurality of flat Braille pixels in a flat tactile display to heat a flat Braille pixel without rendering the Braille pixel non-flat; and

cooling a second plurality of flat Braille pixels in said flat tactile display;

wherein

said heating and said cooling forms a smooth tactile image to touch.

9. The method of claim 8 further comprising converting text into Braille data format for display on said flat tactile display, and wherein said forming said smooth tactile image comprises forming Braille text.

10. The method of claim 8 wherein said forming said smooth tactile image comprises forming a tactile image of a visual representation.

11. The method of claim 8 wherein said heating and said cooling comprises heating and cooling said pluralities of flat Braille pixels using a thermoelectric heat pump.

12. The method of claim 8 wherein said heating said first plurality of Braille pixels comprises heating a first plurality of Peltier elements.

13. The method of claim 8 wherein said cooling said second plurality of Braille pixels comprises cooling a second plurality of Peltier elements.