CN1053542A

CN1053542A - Utilizing light---the acoustic image conversion makes the device of blind person's energy observing scene

Info

Publication number: CN1053542A
Application number: CN 90100173
Authority: CN
Inventors: 陈平
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-01-15
Filing date: 1990-01-15
Publication date: 1991-08-07

Abstract

Utilizing light---it is a kind of medical apparatus and instruments that utilizes optics, electronics and Principles of Acoustics to realize that the acoustic image conversion makes the device of blind person's energy observing scene.Use optical imaging system, photo-electric conversion element matrix and electronic circuit that the visible light pixel in the visual field is converted to the audio signal collection according to its brightness and tone, make them be positioned to acoustic image by two-dimentional stereo reproducing system again.The blind person relies on human auditory system and brain to the disposal ability of stereophonic field, through experience accumulation, can be similar to the ability of the perception scenery optical imagery of vision by the acquisition of this device.

Description

Utilizing light---the acoustic image conversion makes the device of blind person's energy observing scene

The present invention is a kind of device that utilizes light-acoustic image conversion to make blind person's energy observing scene.This is a kind of medical apparatus and instruments that utilizes optics, electronics and Principles of Acoustics to realize, its objective is the ability that makes the blind person possess a kind of perception black and white or colored scenery, so that light and shade, color, shape, size, orientation and the motion conditions of object around the direct observation.

People's brain comprehensively forms the optical imagery except the light from different directions that eye can be experienced, the various sound from different directions that ear can also be experienced comprehensively form the stereo system acoustic image notion of levels are rich, so the normal person of each audition can be with the audition accurately character and the position of the various sounding bodies of perception.Device of the present invention converts each optical image element in the visual field to a brightness and a corresponding audio signal of colourity with this element, and makes it pass through two-dimentional stereo reproducing system at acoustic image element of specific direction simulation.The simulated sound picture of Chan Shenging can make the blind person that surroundings is understood in real time like this, experiences the multicoloured bright world.

The resolution of device is decided according to the quantity of used element, can in very large range change.Device with low resolution can make unbred blind person easily distinguish the direction of luminous point in the dark, finds the special clothes of color in the crowd, finds bigger moving target on fixed background.Device with high-resolution can make the details of trained blind person's perceptual object.

Device of the present invention is made of optical imaging system, photo-electric conversion element matrix, controlled sound source matrix, addition system, multi-channel audio amplifier, six parts of stereo reproducing system.

Accompanying drawing is monochromatic schematic representation of apparatus.

Optical imaging system is general lens or battery of lens, makes the scenery in the visual field be focused into real image on the residing plane of photo-electric conversion element matrix.When the resolution to device does not have special high request, can adopt simple large aperture monolithic convex lens to reduce cost, to improve the sensitivity of device under low-light (level).

The photo-electric conversion element matrix is made up of the photoelectric conversion element device of any kind.If install desired full visual field resolution and be M capable * the N row, then the unitary quantity of electrooptical device is M * N.

Controlled sound source matrix is made of M * N similar sound source circuit unit.Each circuit unit all includes independently oscillating circuit, modulation circuit (comprising controllable filter), and the amplitude of the audio signal that is produced, frequency, tone color are subjected to the control of an electrooptical device output, obtains M * N independently audio signal altogether.

The audio signal that the addition matrix produces each circuit unit of controlled sound source matrix is the component of two coordinates according to the location resolution of its pixel, and with the same coordinate component addition of all signals, so that carry out the electroacoustic conversion by simple amplifier and playback system.In the higher device of class, should in the addition matrix, be proofreaied and correct each component of signal, the simulated sound picture that device is produced overlaps with the nature stereo acoustic image location that user is heard.

The multi-channel audio amplifier is made of several ordinary audio amplifier, and the audio signal that adder obtains is amplified, and in order to obtain the two dimensional surface locating effect of source of sound, uses three sound channels at least.

Stereo reproducing system is made up of earphone or speaker.For the ease of carrying and taking action, playback system can be fixed on the user head with the form that is similar to the earphone heads bow or the helmet.

The structure of colour apparatus is similar to above-mentioned monochromatic device, but optics or imaging moiety should increase colour filter beam split function, and luminous ray is decomposed into red, green, blue three-primary colours.Opto-electronic conversion matrix, controlled sound source matrix should be increased to three covers simultaneously or adopt suitable multiplexing dragging to arrange, respectively the three-primary colours pixel be changed, half sends into the processing of addition matrix then.Distinguish color for ease of user, each first color respectively uses different audio frequency range (or tone color scope) when conversion.

When the high-resolution apparatus of the present invention of large-scale production, can develop special-purpose integrated component, with the standardization and integrated in addition of parts such as above-mentioned opto-electronic conversion matrix and controlled sound source matrix,, and make easier being guaranteed of conversion concordance of each pixel with volume and the power consumption that reduces device as far as possible.

The normal person's of vision brain to the reaction of the understanding of scenery in the infant formation that has been trained for a long time period.Similarly, the user of this device should be set up in brain after the quick understanding reaction through the autotraining of regular period, not only can differentiate the details of object preferably, even also may read simple alphabetic literal.

Claims

1, a kind of device that utilizes light-acoustic image conversion to make blind person's energy observing scene, it is characterized by: the matrix and the electronic circuit that are made of optical imaging system, electrooptical device convert the pixel in the visual field to audio signal one to one respectively according to its brightness and tone.

2, according to the device of claim 1, it is characterized by: pass through stereo reproducing system, make each and optics pixel corresponding audio signal framing respective direction in sound field, form the width of cloth acoustic picture consistent, thereby make the blind person obtain the ability of scenery optical image in the perception visual field by auditory response with optical imagery in the visual field.