TWI589285B - Nerve sensing device with suppress interference - Google Patents

Description

Neural sensing device with suppression of mutual interference

The present invention relates to a neural sensing device, and more particularly to a neural sensing device having an interference to prevent interference of a plurality of dense signals with each other.

In 2002, Second Sight Medical Products Inc. used its experimental electronic eye Argus I to perform human transplantation for six blind patients. Argus I is a bionic eye. It has a resolution of 16 pixels, which allows blind patients to recognize the contour of the object by the difference in brightness of the light reflected from the surface of the object. In 2006, the company released the second-generation Argus II, which will image The resolution is increased to 60 pixels, which provides users with better resolution and correct image recognition.

The device of the experimental electronic eye Argus II of the prior art comprises an image capturing device disposed outside the user body and an image receiving wafer disposed in the user body, wherein the image capturing device comprises a frame, a miniature camera, An image processing unit, a wireless communication module, the frame is removably disposed on a face of the user, and the micro camera and the wireless communication module are disposed thereon, and the micro camera system captures the user An image of the front side, and generating a photographic information; the image processing unit is disposed outside the frame and connected to the micro camera, the image processing unit receives the photographic information of the micro camera, and generates a digital image signal; The wireless communication module receives the digital image information of the image processing unit, and transmits the digital image information to the image receiving chip. The image receiving chip is disposed on a retina of the user and is connected to the user. At least one optic ganglion on the retina, the image receiving chip converts the digital image information into a nerve pulse and transmits the A small section of the optic nerve pulse transmitted to the user's brain, so that the user perceives an image.

However, the image receiving chip of the prior art is to improve the user's interpretation of the image. Degree and recognition rate, it is necessary to add more photosensitive cells on a limited size wafer to increase the pixel value. At this time, the gap between the photosensitive cells is closer, which makes it easier for the photosensitive cells to generate sensing signals when operating. Mutual interference, and the original effective pixel value is reduced; referring to FIG. 1, when the sensing signals of two adjacent photosensitive cells 10 interfere with each other, the signal superimposed between the two adjacent photosensitive cells 10 is higher than the user. At least one threshold of the optic ganglia, at least one optic ganglion of the user recognizes the two photosensitive units 10 and the like as a large-area photosensitive unit 11 and transmits the received sensing signal to the user. In the brain, if all the photosensitive cells 10 interfere with each other, the user will perceive a blurred light and shadow, and cannot recognize the image by the contour of the object, so that the image receiving wafer with high pixels is lost, and the resolution and recognition rate of the image are improved by the user. The function.

Therefore, the present invention provides a neural sensing device with interference suppression and avoiding interference of neurons with multiple dense signals, and has the characteristics of small volume and high sensitivity and accuracy of nerve sensing. At present, the technical problems that all walks of life want to solve.

In view of the above-mentioned shortcomings of the prior art, the main object of the present invention is to provide a neural sensing device with suppressed interference, which can prevent visual neurons from being interfered with by multiple dense signals without sacrificing resolution. In order to improve the sensitivity and accuracy of nerve sensing.

In order to achieve the foregoing and other objects, a neural sensing device for suppressing mutual interference includes: a sensing unit array configured with a plurality of sensing units, each of the plurality of sensing units generating a sensing signal; The signal generator is connected to the sensing unit array and generates a control signal to the periphery of each of the plurality of sensing units, wherein the signal strength of the control signal is lower than the signal strength of the sensing signal to isolate The sensing signal between the plurality of sensing units to suppress interference; and a signal processing module connected to the sensing unit array and the control signal generator, and generating and outputting a processing Signaling to at least one visual neuron; wherein the sensing signal is higher than a threshold of the at least one visual neuron, and the control signal is lower than the threshold of the at least one visual neuron.

Preferably, the sensing unit array can be a photodiode array of an electronic retina wafer, and each of the plurality of sensing units is a photodiode to replace the human body. Photoreceptor cell on the retina.

Preferably, the control signal generator is disposed on one side of the sensing unit array of an electronic retina chip, and transmits the control signal to the signal processing module.

Preferably, the neural sensing device is directly connectable to at least one ganglion cell on the human retina.

Preferably, the processing signal can be at least one spike.

When the neural sensing device of the present invention for suppressing mutual interference is started, the control signal generator generates the control signal to the periphery of each of the plurality of sensing units for isolating the sense between the plurality of sensing units. a signal signal to suppress interference (interference) to prevent the at least one visual neuron from malfunctioning; and when the sensing unit array senses an image and/or a light source, each of the plurality of configured on the sensing unit array The sensing unit generates the sensing signal according to the image and/or the light intensity distribution of the light source in the space, and the sensing unit array senses because the foregoing control signals are isolated between the sensing signals. When the image and/or the light source of the densely distributed light intensity changes, the at least one visual neuron can be prevented from being interfered with each other by the plurality of sensing signals at the same time, thereby achieving the purpose of improving the sensitivity and accuracy of the neural sensing.

10‧‧‧Photosensitive unit

11‧‧‧Photosensitive unit

20‧‧‧Sensor unit array

21‧‧‧Sensor unit

30‧‧‧Control signal generator

40‧‧‧Signal Processing Module

50‧‧‧Visual neurons

60‧‧‧ brain

1 is a schematic diagram showing the mutual interference of sensing signals of two adjacent photosensitive cells of an experimental electronic eye of the prior art; FIG. 2 is a neural sensing device for suppressing mutual interference according to the present invention, showing a first embodiment FIG. 3 is a schematic diagram showing the appearance of a sensing unit array according to the first embodiment; FIG. 4 is a schematic diagram showing the appearance of a sensing unit array according to the present invention; FIG. The measuring device displays a sensing signal and a control signal coupling diagram of the first embodiment; and FIG. 5 shows the nerve sensing device according to the present invention for suppressing mutual interference, which is shown in the first embodiment.

The embodiments of the present invention are described by way of specific examples, and those skilled in the art can readily appreciate the other advantages and advantages of the present invention. The invention may be embodied or applied in various other specific embodiments, and various modifications and changes may be made without departing from the spirit and scope of the invention.

It is to be understood that the structure, the proportions, the size and the like of the present invention are intended to be used in conjunction with the disclosure of the specification, and are not intended to limit the scope of the invention. The conditions are not technically meaningful, and any modification of the structure, change of the proportional relationship or adjustment of the size should be disclosed in the present invention without affecting the effects and achievable effects of the present invention. The technical content can be covered.

In the following, in accordance with a first embodiment of the present invention, a neural sensing device for suppressing crosstalk is described.

As shown in FIG. 2 and FIG. 3 , the neural sensing device with the interference suppression device includes a sensing unit array 20 , a control signal generator 30 and a signal processing module 40 . The sensing unit array 20 is configured with a plurality of sensing units 21, and each of the plurality of sensing units 21 generates a sensing signal, wherein each sensing signal is higher than a threshold of the at least one visual neuron 50, so that At least one visual neuron 50 senses the effective information and transmits it to the brain 60. According to the first embodiment of the present invention, the sensing unit array 20 is a photodiode array of an electronic retina wafer, and each of the plurality of sensing units 21 is a photodiode to replace the human retina. A photoreceptor cell, that is, a plurality of sensing units 21 as a pixel of a picture to be sensed, for converting a plurality of photon energies incident from the outside to each of the plurality of sensing units 21 into electron free energy And outputting electrical energy to generate a sensing signal corresponding to the complex photon energy, and transmitting the sensing signal to the signal processing module 40.

As shown in FIG. 2 to FIG. 4 , the control signal generator 30 can be connected to the sensing unit array 20 and can generate a control signal to the periphery of each of the plurality of sensing units 21 , wherein the signal strength of the control signal is lower than the sensing. The signal strength of the signal is used to isolate the sensing signal between the plurality of sensing units to suppress the interference; and the control signals are lower than the threshold of the at least one visual neuron 50 to avoid at least A visual neuron 50 senses effective information, and according to the theory of nerve conduction, at least one optic neuron 50 has a period of non-reactivity after a period of stimulation of an action potential due to inactivation of the sodium ion (Na ⁺ ) channel. (refractory period), when at least one of the visual neurons 50 is in a non-reactive period, it will not be able to respond to the stimulation of other action potentials, and the first embodiment of the present invention causes the periphery of each of the plurality of sensing units 21 At least one of the optic neurons 50 is temporarily in a non-reactive period, and the sensing signals generated by each of the at least one sensing unit 21 are suspended to form a chain reaction around them, thereby avoiding Disturbing to other sensing units, there is no phenomenon that the signal intensity superimposed between adjacent sensing units 21 is higher than the threshold of at least one visual neuron 50, and the signal strength of each control signal is not At least one threshold value of the visual neuron 50 does not constitute effective information for at least one of the visual neurons 50 and affects the recognition of the brain 60 for the image to be sensed. According to the first embodiment of the present invention, the control signal generator 30 can be disposed on one side of the sensing unit array 20 of an electronic retina chip, and the control signal can be transmitted to the signal processing module 40.

Referring to FIG. 2 and FIG. 5, the signal processing module 40 can be connected to the sensing unit array 20 and the control signal generator 30, and can generate and output a processing signal to at least one visual neuron 50. According to a first embodiment of the present invention, the neural sensing device can be directly connected to at least one ganglion cell on the human retina for enabling the signal processing module 40 to replace the bipolar cell on the human retina. And/or horizontal cells, wherein each at least one ganglion cell is a nodular construct composed of at least one visual neuron 50 having the same function. Bipolar cells are used to enhance signal edge differences and improve the sharpness of the images perceived by the brain 60, ie, sharpens, while horizontal cells are used to attenuate image edge differences and reduce the sharpness of the image perceived by the brain 60. Blurring.

In the first embodiment of the present invention, the processing signal may be at least one spike, and the signal processing module 40 couples the sensing signals of the complex sensing units 21 with the control signals to generate and output at least one. The pulse wave gives at least one visual neuron 50.

When the present invention is used, the sensing unit array 20 is first disposed on a user's retina, and at least one sensing unit 21 on the sensing unit array 20 is oriented toward the outside of the user to sense the user's retina. The external image connects the signal processing module 40 to at least one ganglion cell on the human retina to transmit a processing signal to at least one visual neuron 50. Then, the control signal generator 30 generates a control signal to each of the complex sensing units. A sensing signal is interposed between the plurality of sensing units to prevent the plurality of sensing signals from interfering with each other to prevent the at least one visual neuron 50 from malfunctioning. When the sensing unit array 20 senses an image and/or a light source, each of the plurality of sensing units 21 disposed on the sensing unit array 20 is based on the image and/or Or the light intensity distribution of the light source in the space generates a sensing signal, and since the foregoing control signals are isolated between the sensing signals, when the sensing unit array 20 senses a densely distributed image of light intensity changes and/or When the light source is used, at least one of the visual neurons 50 can be prevented from being interfered with each other by the plurality of sensing signals at the same time, thereby achieving the purpose of improving the sensitivity and accuracy of the neural sensing.

Although the embodiments have been described with reference to the embodiments of the present invention, it will be understood that Inside. In particular, various changes and modifications can be made in the components and/or arrangements of the subject combination arrangements in the scope of the disclosure and the scope of the appended claims. Alternative uses will be apparent to those skilled in the art, in addition to variations and modifications in the component parts and/or configuration.

20‧‧‧Sensor unit array

21‧‧‧Sensor unit

30‧‧‧Control signal generator

40‧‧‧Signal Processing Module

50‧‧‧ neurons

60‧‧‧ brain

Claims (5)

A neural sensing device with a suppression of mutual interference includes: a sensing unit array configured with a plurality of sensing units, each of the plurality of sensing units generating a sensing signal; and a control signal generator connected to the sensing Detecting the array of cells and generating a control signal to the periphery of each of the plurality of sensing units, wherein the signal strength of the control signal is lower than the signal strength of the sensing signal for isolating between the plurality of sensing units The sensing signal is configured to suppress crosstalk; and a signal processing module is coupled to the sensing unit array and the control signal generator, and generates and outputs a processing signal to the at least one visual neuron; wherein the sense The test signal is higher than a threshold of the at least one visual neuron, and the control signal is lower than the threshold of the at least one visual neuron, the threshold being a mV setting. The neurosensor device for suppressing crosstalk according to claim 1, wherein the sensing unit array is a photodiode array of an electronic retina wafer, and each of the plurality of sensing units is a photodiode Polar body to replace photoreceptor cells on the human retina. The neural sensing device for suppressing crosstalk according to the first aspect of the invention, wherein the control signal generator is disposed on one side of the sensing unit array of an electronic retina chip, and transmits the control signal To the signal processing module. The nerve sensing device for suppressing crosstalk according to claim 1, wherein the nerve sensing module is directly connected to at least one ganglion cell on the human retina. The nerve sensing device for suppressing mutual interference according to claim 1, wherein the processing signal is at least one pulse wave.