EP1200034A1 - Device for aiding the orientation of the blind - Google Patents
Device for aiding the orientation of the blindInfo
- Publication number
- EP1200034A1 EP1200034A1 EP00944131A EP00944131A EP1200034A1 EP 1200034 A1 EP1200034 A1 EP 1200034A1 EP 00944131 A EP00944131 A EP 00944131A EP 00944131 A EP00944131 A EP 00944131A EP 1200034 A1 EP1200034 A1 EP 1200034A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- microprocessor
- unit
- picture
- information
- serving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000012546 transfer Methods 0.000 claims description 6
- 230000001755 vocal effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004800 psychological effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
- A61H3/061—Walking aids for blind persons with electronic detecting or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/08—Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/001—Teaching or communicating with blind persons
- G09B21/006—Teaching or communicating with blind persons using audible presentation of the information
Definitions
- the invention relates to a device that aids the orientation of the blind, which contains a sensing unit that can be fixed to the body surface of the person using it and a processing unit that is connected to the sensing unit.
- microprocessors with a high operating speed and a large memory capacity in a sufficiently small size, cheaply, and they can be programmed as required, so they may become mass produced articles, like for example, the hearing aid.
- our aim was to overcome the deficiencies of the known aiding devices and to create a device that supports the picture creating ability of the blind and so improves their sureness of movement and aids better and more precise orientation.
- the basis of the idea of the invention was formed by the recognition that if with the help of an optical device fixed to the head capable of producing pictures of objects, comparing these with the pictures of groups stored earlier in a database with the help of a computing device we select a sound identifier that the most closely relates to the object and this is played to the blind person in an audible form, then carrying out the simple picture-sound transformation the task may become solvable.
- the device to aid the orientation of the blind - which contains a sensing unit fixed to the body surface of the person using it and processing unit connected to the sensing unit - is formed in such a way that the sensing unit has a CCD camera and the processing unit has a microprocessor, the microprocessor has an analogue input, external bus and output, through the signal forming unit of the camera it is connected to the analogue input of the microprocessor, picture memory and sound memory is connected to the external bus of the microprocessor, and with the implementation of an amplifier a loudspeaker suitable for transmitting speech information is connected to the output of the microprocessor.
- a further criterion of the device according to the invention is that the microprocessor has a data transfer input, and through a recording unit temporarily connected to the data transfer input a microphone is connected serving to read in verbal information.
- the microprocessor has a controller part unit suitable for reading in and processing picture and sound information at the same time, the controller part unit is connected to the internal memory unit serving as a store for the picture information and a second internal memory unit serving as a store for the sound information, the two internal memory units are connected to an identifying unit serving the searching according to picture information and also serving to connect up the picture and sound information.
- the device has numerous advantageous features.
- An important advantage is that in the brain of a person blinded in an accident there is a kind ofcrowdedpicture" of the environment and the world, so it is easier to give back the concrete pictures of the objects in their area of movement, of his/her home and neighbourhood by naming them.
- Another advantage is that on the one hand that the picture and word vocabulary of the device is programmed in a fixed way during manufacture, and on the other hand that a seeing person in the environment of the person using the device can carry out customised programming, so the device can become language independent and be simply used anywhere in the world.
- Figure 1 is the outline sketch of a version of the device
- Figure 2 is a picture showing the video signal mapping
- Figure 3 is the block diagram of the steps of the operating program
- FIG. 1 shows the outline of the important elements of the device
- the CCD camera 1 provides the basic signal of the device, which the joining module 2 edits and adjusts in amplitude for the microprocessor 3
- the sample-taking subroutine of the processing program stores the video signal coming into the analogue input 3a of the microprocessor 3 in 64 pieces, 8 bit words - as shown in figure 2 - as one block in the working register This low resolution gives the device the advantage that it sees quite a lot of similar objects to be the same The procedure can continue here in two directions
- the writing unit 8 tempora ⁇ ly to the data transfer input 3d of the microprocessor 3 then it w ⁇ tes the contents of a given block into the picture memory 4, provides it with a serial number, which it then uses as an index du ⁇ ng the search process At the same time it stores the short describing expression ar ⁇ ving through the microphone 9 into the sound memory 5
- the program - the block outline of which is shown by figure 3 - takes the blocks from the picture memory 4 in line, compares them with the blocks to be found in the working register, then in the case of sameness on the basis of the index belonging to the given block the expression belonging to the index is selected from the sound memory 5, transfe ⁇ ed to the output register, then prominencesent" out through the output to the amplifier 6, then to the loudspeaker 7. The process is repeated like this, then if there is no identifiable block a message locallyunknown obstacle" is heard.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Business, Economics & Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Ophthalmology & Optometry (AREA)
- Pain & Pain Management (AREA)
- Epidemiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Rehabilitation Therapy (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- User Interface Of Digital Computer (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention relates to a device to aid the orientation of the blind, which contains a sensing unit fixed to the body surface of the person using it and processing unit connected to the sensing unit. The characteristic feature of the solution is that the sensing unit has a CCD camera (1) and the processing unit has a microprocessor (3), the microprocessor (3) has an analogue input (3a), external bus (3b) and output (3c), through the signal forming unit (2) of the camera (1) it is connected to the analogue input (3a) of the microprocessor (3), picture memory (4) and sound memory (5) is connected to the external bus (3b) of the microprocessor (3), and with the implementation of an amplifier (6) a loudspeaker (7) suitable for transmitting speech information is connected to the output (3c) of the microprocessor (3).
Description
Device for aiding the orientation of the blind
The invention relates to a device that aids the orientation of the blind, which contains a sensing unit that can be fixed to the body surface of the person using it and a processing unit that is connected to the sensing unit.
There are many types of device today that aid the blind to move about, of these there is the stick, the disadvantage of which is that the sensing distance is small. A significant aiding partner is a trained guide dog, the acquisition and keeping of which is very expensive. The general deficiencies of the known aiding devices are that they do not give information regarding the pictures and the direction of the obstacles, only of their presence.
The software that is available commercially is capable of producing a relationship between pictures and sounds, but it requires a great deal of hardware, so because of its dimensions and high price it will not become a mass produced article. Due to the development of microchips development engineers are provided with microprocessors with a high operating speed and a large memory capacity in a sufficiently small size, cheaply, and they can be programmed as required, so they may become mass produced articles, like for example, the hearing aid.
With the invention our aim was to overcome the deficiencies of the known aiding devices and to create a device that supports the picture creating ability of the blind and so improves their sureness of movement and aids better and more precise orientation.
Our aim was for the device to be small and its production cost and selling price allow it to be sold as a mass produced article.
The basis of the idea of the invention was formed by the recognition that if with the help of an optical device fixed to the head capable of producing pictures of objects, comparing these with the pictures of groups stored earlier in a database with the help of a computing device we select a sound identifier that the most closely relates to the object and this is played to the blind person in an audible form, then carrying out the simple picture-sound transformation the task may become solvable.
In accordance with the set aim the device according to the invention to aid the orientation of the blind - which contains a sensing unit fixed to the body surface of the person using it and processing unit connected to the sensing unit - is formed in such a way that the sensing unit has a CCD camera and the processing unit has a microprocessor, the microprocessor has an analogue input, external bus and output, through the signal forming unit of the camera it is connected to the analogue input of the microprocessor, picture memory and sound memory is connected to the external bus of the microprocessor, and with the implementation of an amplifier a loudspeaker suitable for transmitting speech information is connected to the output of the microprocessor.
A further criterion of the device according to the invention is that the microprocessor has a data transfer input, and through a recording unit temporarily connected to the data transfer input a microphone is connected serving to read in verbal information.
In a possible version of the device the microprocessor has a controller part unit suitable for reading in and processing picture and sound information at the same time, the controller part unit is connected to the internal memory unit serving as a store for the picture information and a second internal memory unit serving as a store for the sound information, the two internal memory units are connected to an identifying unit serving the searching according to picture information and also serving to connect up the picture and sound information.
The device has numerous advantageous features. An important advantage is that in the brain of a person blinded in an accident there is a kind of „picture" of the environment and the world, so it is easier to give back the concrete pictures of the objects in their area of movement, of his/her home and neighbourhood by naming them.
Those born blind participate in different training processes, where with the help of touch, feel and explanation they carry the visible pictures of only a few objects and situations, so for them the advantage of the device is that making use of its free programming ability so- called global pictures can be produced in accordance with the person's „ vocabulary".
A favourable point is that due to the transformation of new picture information to sound information recognising, identifying obstacles occurring while moving about as pictures, then playing them as sound, the device guarantees a much better feeling of security than the already realised bleeper, signalling devices.
Another advantage is that on the one hand that the picture and word vocabulary of the device is programmed in a fixed way during manufacture, and on the other hand that a seeing person in the environment of the person using the device can carry out customised programming, so the device can become language independent and be simply used anywhere in the world.
Another favourable feature is that the information stored in the device does not use the „usual: bmp, jpg, ... " picture storage procedures, but its unique resolution is low (64x8 bit is one picture), so due to the small amount of space required the upper limit of the number of pictures that can be stored is only a question of memory capacity, it is possible to produce cheaper, more modest one hundred word devices, or more expensive devices containing even one thousand picture word connections.
Due to the low resolution an advantage is that many different objects, but similar in profile are forced into one group, but the aim is not to recognise a type, or the brand of a motor vehicle, differentiating is satisfactory.
Another advantage that has to be mentioned is that the weight of the device is low, as its consumption, its price is modest, affordable by all, its covering is protected against rain, its sensitivity even in dusk is satisfactory, as it ensures stable operation even in environmental light of 0.2 lux.
It is also important to emphasise the advantageous feature that technically a resolution may be attained with which letters, characters may be „read out", and with this a new area of use opens, not only for the blind, but also for those with poor sight.
It is practical for the device to be fitted to the arms of a spectacles frame (also ensuring its aesthetic production), in accordance with the head movement-seeing psychological effect it is turned in the direction of „vιewιng" and so the optical sensor of the device fixed in this way sees a real, black and white picture A microcomputer transforms the produced signal seπes with AD conversion, stores it, then compares it with the bit pictures of signal forms belonging to an average of one hundred pictures recorded duπng programming In accordance with the result of the comparison an expression is selected that was associated with the picture duπng programming and the name of the picture is read out through miniature loudspeakers
In connection with the example the invention is presented in more detail on the basis of drawings On the drawing
Figure 1 is the outline sketch of a version of the device, Figure 2 is a picture showing the video signal mapping, Figure 3 is the block diagram of the steps of the operating program
Figure 1 shows the outline of the important elements of the device The CCD camera 1 provides the basic signal of the device, which the joining module 2 edits and adjusts in amplitude for the microprocessor 3
The sample-taking subroutine of the processing program stores the video signal coming into the analogue input 3a of the microprocessor 3 in 64 pieces, 8 bit words - as shown in figure 2 - as one block in the working register This low resolution gives the device the advantage that it sees quite a lot of similar objects to be the same The procedure can continue here in two directions
In the case that we are in the „learmng" status, in other words we connect the writing unit 8 temporaπly to the data transfer input 3d of the microprocessor 3 then it wπtes the contents of a given block into the picture memory 4, provides it with a serial number, which it then uses as an index duπng the search process At the same time it stores the short describing expression arπving through the microphone 9 into the sound memory 5
If we are in the recognition or user status, the program - the block outline of which is shown by figure 3 - takes the blocks from the picture memory 4 in line, compares them with the blocks to be found in the working register, then in the case of sameness on the basis of the index belonging to the given block the expression belonging to the index is selected from the sound memory 5, transfeπed to the output register, then „sent" out through the output to the amplifier 6, then to the loudspeaker 7. The process is repeated like this, then if there is no identifiable block a message „unknown obstacle" is heard.
In the interest of reliable identification the picture needs to be a standing picture for one second!
Deriving from the video signal frequency and the type of microprocessor and its clock pulse (100 MHz) approx. ten measurement take place in one second, this is enough of a guarantee for reliable recognition. This value is close to the human recognising ability, e.g. the running into one another of pictures while you shake your head.
List of references
camera joining module microprocessor 3 a analogue input 3 b external bus 3 c output 3d data transfer input picture memory sound memory amplifier loudspeaker writing unit microphone
Claims
1. A device to aid the orientation of the blind, which contains a sensing unit fixed to the body surface of the person using it and processing unit connected to the sensing unit, characterised by that that the sensing unit has a CCD camera (1) and the processing unit has a microprocessor (3), the microprocessor (3) has an analogue input (3a), external bus (3b) and output (3 c), through the signal forming unit (2) of the camera (1) it is connected to the analogue input (3a) of the microprocessor (3), picture memory (4) and sound memory (5) is connected to the external bus (3b) of the microprocessor (3), and with the implementation of an amplifier (6) a loudspeaker (7) suitable for transmitting speech information is connected to the output (3c) of the microprocessor (3).
2. Device according to claim 1 characterised by that the microprocessor (3) has a data transfer input (3d), and through a recording unit (8) temporarily connected to the data transfer input (3d) a microphone (9) is connected serving to read in verbal information.
3. Device according to claims 1 or 2 characterised by that the microprocessor (3) has a controller part unit suitable for reading in and processing picture and sound information at the same time, the controller part unit is connected to the internal memory unit serving as a store for the picture information and a second internal memory unit serving as a store for the sound information, the two internal memory units are connected to an identifying unit serving the searching according to picture information and also serving to connect up the picture and sound information.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU9902295 | 1999-07-07 | ||
| HU9902295A HU221967B1 (en) | 1999-07-07 | 1999-07-07 | Set of devices for promoting orientation of the blind |
| PCT/HU2000/000076 WO2001003635A1 (en) | 1999-07-07 | 2000-07-07 | Device for aiding the orientation of the blind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1200034A1 true EP1200034A1 (en) | 2002-05-02 |
Family
ID=89998668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00944131A Withdrawn EP1200034A1 (en) | 1999-07-07 | 2000-07-07 | Device for aiding the orientation of the blind |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1200034A1 (en) |
| AU (1) | AU5836500A (en) |
| HU (1) | HU221967B1 (en) |
| PL (1) | PL364170A1 (en) |
| WO (1) | WO2001003635A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10334009A1 (en) * | 2003-07-25 | 2005-02-10 | Diehl Munitionssysteme Gmbh & Co. Kg | Blind and partially sighted persons orientation aid is integrated in blind persons stick and uses modulated transmission and array detector to measure distance to objects |
| GB2441434B (en) * | 2006-08-29 | 2010-06-23 | David Charles Dewhurst | Audiotactile vision substitution system |
| WO2013067513A1 (en) | 2011-11-04 | 2013-05-10 | Massachusetts Eye & Ear Infirmary | Contextual image stabilization |
| EP2629241A1 (en) * | 2012-02-16 | 2013-08-21 | Orcam Technologies Ltd. | Control of a wearable device |
| AU2015311663B2 (en) | 2014-09-03 | 2019-02-28 | Aira Tech Corporation | Media streaming methods, apparatus and systems |
| AT14790U1 (en) * | 2015-01-30 | 2016-06-15 | Veronika Mayerboeck | Setting of light by mobile portable radio-linked light sensor system with integrated sound processing and light control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027456A1 (en) * | 1994-04-11 | 1995-10-19 | Nauchno-Vnedrencheskoe Proizvodstvennoe Predpriyatie 'reabilitatsia' | Guide device for the blind |
| US5818381A (en) * | 1994-06-24 | 1998-10-06 | Roscoe C. Williams Limited | Electronic viewing aid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8602761D0 (en) * | 1986-02-05 | 1986-03-12 | Al Basri A | Blind persons transformer of vision to sound |
| DE4004438A1 (en) * | 1990-02-14 | 1991-08-22 | Manfred Laschuetza | Specially equipped walking stick for blind person - gives all round acoustic picture of immediate area and direction and range of nearby objects |
| US5097856A (en) * | 1991-01-14 | 1992-03-24 | Chi Sheng Hsieh | Electronic talking stick for the blind |
| DE29707020U1 (en) * | 1997-03-18 | 1997-09-25 | Förster, Katrin, 39576 Stendal | Device for clearly assigning information in speech form to an object |
-
1999
- 1999-07-07 HU HU9902295A patent/HU221967B1/en not_active IP Right Cessation
-
2000
- 2000-07-07 PL PL00364170A patent/PL364170A1/en not_active Application Discontinuation
- 2000-07-07 EP EP00944131A patent/EP1200034A1/en not_active Withdrawn
- 2000-07-07 WO PCT/HU2000/000076 patent/WO2001003635A1/en active Search and Examination
- 2000-07-07 AU AU58365/00A patent/AU5836500A/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027456A1 (en) * | 1994-04-11 | 1995-10-19 | Nauchno-Vnedrencheskoe Proizvodstvennoe Predpriyatie 'reabilitatsia' | Guide device for the blind |
| US5818381A (en) * | 1994-06-24 | 1998-10-06 | Roscoe C. Williams Limited | Electronic viewing aid |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO0103635A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5836500A (en) | 2001-01-30 |
| HU9902295D0 (en) | 1999-09-28 |
| WO2001003635A1 (en) | 2001-01-18 |
| HUP9902295A2 (en) | 2001-09-28 |
| HU221967B1 (en) | 2003-03-28 |
| PL364170A1 (en) | 2004-12-13 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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