Visual prosthesis including an improved video processing unit
The present invention is an improved visual prosthesis including a video processing unit with user controls optimized for use by blind individuals. The controls include easily identifiable shapes. The controls are programmable to provide improved usability with a simple tactile interface.
1. A visual prosthesis comprising:
a camera receiving a video image and sending a video signal;
a video processing unit, receiving the video signal and converting the video signal to stimulation patterns including
a processor circuit altering the video signal according to user input,
a housing enclosing the circuit,
an indented portion in the housing configured to be identified by touch,
a programmable slider within the indented portion for providing user input, the programmable slider programmable to control brightness;
a transmitter receiving stimulation patterns from the video processing unit and sending the wireless signals; and
an implantable portion receiving the wireless signals and suitable to stimulate visual neurons.
2. The visual prosthesis according to claim 1 , wherein the indented portion includes a beveled indentation.
3. The visual prosthesis according to claim 1 , wherein the indented portion is oval in shape.
4. The visual prosthesis according to claim 1 , wherein the housing includes tactile features in assist a blind person in orienting the housing and locate the user controls.
5. The visual prosthesis according to claim 1 , wherein the programmable slider is a variable resistor with an output connected to an analog digital converter.
6. The visual prosthesis according to claim 1 , wherein the programmable slider is a potentiostat.
7. The visual prosthesis according to claim 1 , wherein the programmable slider is programmable to control gain.
8. The visual prosthesis according to claim 1 , wherein the programmable slider is programmable to control sensitivity.
9. The visual prosthesis according to claim 1 , wherein the programmable slider is programmable to control exposure.
10. The visual prosthesis according to claim 1 , wherein the programmable slider is programmable to control contrast.
11. The visual prosthesis according to claim 1 , wherein the programmable slider is programmable to control zoom.