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公开(公告)号：US20190192854A1
公开(公告)日：2019-06-27
申请号：US16230218
申请日：2018-12-21
发明人： Feng-Hsiung HSU , Yung-Chan CHEN , Long-Sheng FAN
CPC分类号： A61N1/36046 , A61N1/025 , A61N1/0543 , H04N5/378
摘要： The present invention relates to a system for artificial retinal prosthesis comprising a pixel array, a correlated double sampling unit, an analog-to-digital converter, a digital core, and a digital-to-analog converter. The system stimulates retinal cells row-to-row, and therefore can effectively reduce large transient currents and avoid unfavorable condition of power drop due to large transient currents.
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公开(公告)号：US20190209842A1
公开(公告)日：2019-07-11
申请号：US16233941
申请日：2018-12-27
发明人： Feng-Hsiung HSU , Long-Sheng FAN , Yung-Chan CHEN
CPC分类号： A61N1/36046 , A61F2/14 , A61F9/08 , A61N1/025 , A61N1/0543 , H04N5/378
摘要： The invention provides a system for artificial retinal prosthesis with color vision comprising an artificial retinal prosthesis implanted in a user's body. The artificial retinal prosthesis comprises a plurality of pixel units and a color shutter integrated with the plurality of pixel units structurally. The plurality of pixel units are used to receive an external visual image that enters the eyes of the user, and output a spatiotemporal electrical stimulation to the user's optic nerve according to the external visual image. The color shutter connects with the plurality of pixel units, and determines a spectrum that is allowed to enter the eyes to allow the user to generate a color image perception. By allowing stimulation of the artificial retinal prosthesis to vary with different spaces and times, and synchronously controlling the spectrum that is allowed to enter the eyes, thereby assisting the patient in obtaining color visual perception.
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公开(公告)号：US20220212011A1
公开(公告)日：2022-07-07
申请号：US17704842
申请日：2022-03-25
发明人： Feng-Hsiung HSU , Yung-Chan CHEN , Long-Sheng FAN
摘要： An artificial prosthesis is disclosed, which comprises a pixel array, a correlated double sampling unit, an analog-to-digital converter, a digital core, and a digital-to-analog converter. The digital core is configured to perform a calculation of electrical stimulation waveform of each of the pixels by using a processing function of an ANN. As such, the neural stimulation levels for artificial vision can be optimized.
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公开(公告)号：US20220211999A1
公开(公告)日：2022-07-07
申请号：US17704815
申请日：2022-03-25
发明人： Feng-Hsiung HSU , Yung-Chan CHEN , Long-Sheng FAN , Lee LIN
IPC分类号： A61N1/05
摘要： An artificial retinal prosthesis is disclosed, which comprises a plurality of pixel group units to output a spatiotemporal electrical stimulation for inducing color perception. Each of the pixel group units comprises a main pixel unit and at least one surrounding pixel unit. The main pixel unit and the surrounding pixel unit respectively outputs an electrical stimulation waveform according to a first stimulation cycle and a second stimulation cycle. Both of the first stimulation cycle and the second stimulation cycle have a first-half duration and a second-half duration. The first-half duration of the first stimulation cycle has inactive period greater than 20% and less than 80% and the rest of the first stimulation cycle is active period. The second-half duration of the first stimulation cycle is inactive period. The first-half duration of the second stimulation cycle is active period and the second-half duration of the second stimulation cycle is inactive period.
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