US Patent No: 6,636,202
Number of patents in Portfolio can not be more than 2000
Interactive tactile display for computer screen
Stats
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Oct 21, 2003
Issued date -
Apr 27, 2001
filing date -
09/844,397
serial no -
In Force
status
Importance
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Abstract
Apparatus for converting a visual image into a tactile image. The apparatus comprises imaging means for converting incident light from the visual image into electrical signals that are proportional to the gray scale intensity of the incident light. The apparatus also comprises a tactile display device having a two-dimensional array of variable height pixels, wherein the height of each pixel in the tactile display is dynamically variable in proportion to the electrical signals from the imaging means. Preferably, the height of each pixel is inversely proportional to the gray scale intensity of the incident light so that the maximum height of a pixel occurs when a corresponding pixel in the visual image is black.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,223,828 Method and system for enabling a blind computer user to handle message boxes in a graphical user interface | 80 | 1991 | |
| 5,186,629 Virtual graphics display capable of presenting icons and windows to the blind computer user and method | 282 | 1991 | |
| 6,046,722 Method and system for enabling blind or visually impaired computer users to graphically select displayed elements | 45 | 1991 | |
| 5,287,102 Method and system for enabling a blind computer user to locate icons in a graphical user interface | 89 | 1991 | |
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| 5,912,660 Mouse-like input/output device with display screen and method for its use | 23 | 1997 | |
| 6,278,441 Tactile interface system for electronic data display system | 33 | 1999 | |
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| 5,065,434 Image information processing apparatus having a multi-function switch | 7 | 1990 | |
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| 6,459,364 Internet browser facility and method for the visually impaired | 30 | 2000 | |
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| 5,714,978 Adjacent cursor system with tactile feedback for the blind | 165 | 1995 | |
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| 6,354,839 Refreshable braille display system | 28 | 1998 | |
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| 5,636,038 Apparatus for converting visual images into tactile representations for use by a person who is visually impaired | 39 | 1996 | |
| 5,942,970 Image optical-to-tactile converter | 9 | 1998 | |
| 6,417,821 Braille computer monitor | 9 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 21, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |