CODING FOR VISUAL PROSTHESES
First Claim
Patent Images
1. A method for coding information for prosthetic visual presentation, the method comprising:
- sequentially selecting portions of an image; and
for each selected portion,forming a plurality of values to represent the portion, andforming signals for presentation of the plurality of values representing the portion of the image on corresponding electrodes, including forming signals for sequential presentation of a plurality of disjoint subsets of the values in corresponding successive time intervals.
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Abstract
A visual prostheses codes visual signals into electrical stimulation patterns for the creation of artificial vision. In some examples, coding of the information uses image compression techniques, temporal coding strategies, continuous interleaved sampling (CIS), and/or radar or sonar data. Examples of the approach are not limited to processing visual signals but can also be used to processing signals at other frequency ranges (e.g., infrared, radio frequency, and ultrasound), for instance, creating an augmented visual sensation.
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Citations
30 Claims
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1. A method for coding information for prosthetic visual presentation, the method comprising:
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sequentially selecting portions of an image; and for each selected portion, forming a plurality of values to represent the portion, and forming signals for presentation of the plurality of values representing the portion of the image on corresponding electrodes, including forming signals for sequential presentation of a plurality of disjoint subsets of the values in corresponding successive time intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A visual prosthesis comprising:
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an input for accepting a signal representing an input image; a signal processor configured to sequentially select portions of the image, and for each selected portion, form a plurality of values to represent the portion, and form signals for presentation of the plurality of values representing the portion of the image on corresponding electrodes, including forming signals for sequential presentation of a plurality of disjoint subsets of the values in successive time intervals; and an output for providing the formed signals for presenting the coded image via a plurality of electrodes. - View Dependent Claims (28, 29)
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30. A visual prosthesis comprising:
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an input for accepting a signal representing an input image; a signal processor configured to sequentially select subsets of scan lines of pixels of an image, and for each selected subset of scan lines, form a plurality of blocks of pixels in the subset of scan lines, and for each of the blocks form a plurality of transform coefficients from the block of pixels, and form signals for presentation of the transform coefficients of the blocks on corresponding electrodes, including forming signal pulses for sequential presentation of a plurality of disjoint subsets of the values in successive time intervals; and an array of electrodes coupled to the signal processor, for driving a different subset of electrodes using each different disjoint subset of the values.
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Specification