LT5159B - Tracing-ball type of an input-output device - Google Patents

Abstract

Tracing ball type of an input-output computer device for the blind is used for teaching the blind to work with a personal computer. The device includes a block and a computer mouse in which situated magnets (1 and 2) spring-loaded (3). Each of the magnets is winded by winding of a coil (4). Additionally, there are pins (7) and three spaces (6) for mounting the springs (3) in the housing (5), and in the upper plate (8), there are elongated spaces (9) for protruding upper elements (10) of the magnet. The upper elements of the magnet are designated for transferring movement of the magnets to a finger.

Description

The invention can be attributed to the field of computer devices adapted for disabled persons to work with a computer.

Known tactile screens for the blind to work with the computer. These are sophisticated video and text transmission mechanisms. They have one needle per actuator, making the device bulky and complex (see Taylor, PM, Moser, A., Creed, A.J. The Design and Control of a Tactile Display Based on Shape Memory Alloys, IEE Colloq., 'Developments in Tactile Displays', 21 January 1997).

The disadvantage is the complex and bulky device.

The closest embodiment of the present invention is a computer mouse device for the blind (patent WO 98/31005 G06F 3/033), which consists of an imaging area mounted on the upper surface of a mouse, and wheels mounted within it. These wheels determine the direction and coordinates of the mouse movement. The body of the device is made of plastic. There are many holes in the imaging area through which needles resemble braille bumps. The small gears allow the needles to extend a certain length, mimicking the text and graphics that are transmitted. The needle protrusion level transmits the depth of color, the shades. Each needle is pushed by a separate actuator. At the bottom of the device are two mouse balls that play a key role in transmitting information and determining device coordinates on the surface. These balls are equipped with two sensors which, when coordinates change, are grouped with their respective balls, thereby detecting the change in coordinates and converting this data into electrical signals. The actuators, the sensors and the circuit formed from them are connected to the control computer.

The system installed on this device allows you to understand both textual and graphic images. We distinguish colors by three qualities: hue, saturation and luminosity. This is what distinguishes colors on this device. The shade is determined by the up and down movement of the needles in the frequency range of 3 Hz to 5 Hz. This allows you to code four shades. The luminosity of the colors is determined by the height of the needle protrusion and the color saturation is ignored.

The device has a complicated design and insufficient information transfer.

The object of the present invention is to improve the transmission of information to the blind by simplifying the construction.

A computer mouse-type I / O device for the blind consists of a control unit (not shown) and a computer mouse, which has a rectangular housing with magnets housed inside and elasticated inside. The rectangular case is covered with rigid plates inside and out of the mouse, has three cavities for mounting the springs and pins, and the upper plate has an elongated cavity for inserting the upper elements of the magnets and this computer mouse is placed on a metal surface. The computer mouse has a built-in rectangular case with magnets and spring-loaded springs. The magnets are uniform in shape to their upper members, whose lateral members are shaped such that, when extended along the axial lines of the upper magnet elements, they form an apparent cone, while the middle magnet's upper element forms a continuation of the vertical magnet.

The essence of the invention is illustrated in the drawings.

Fig. 1 is a side elevation of magnets;

Fig.2 - top view of magnets;

Fig. 3 is a section of magnets from the left;

Fig.4 - magnet on metal surface.

Figure 1 shows a magnet 1 mounted on a spring 3, a coil winding 4 on a magnet, a housing 5 having three cavities 6 through which the springs 3 are mounted and secured by pins 7; .At the bottom the case is covered with a plate 11. Metal surface on which the mouse is placed -12.

Fig. 2 shows a top view of magnets 1 and 2 mounted on springs 3, here we see the cavities 9 through which the upper elements 10 of the magnets extend.

3 shows a side view of magnets 1 and 2 mounted on springs 3. Figure 4 shows a magnet 1 standing on surface 12 and winding 4 on it. Magnets 2 are wrapped with the same winding 4 as magnet 1. A computer mouse-type input / output device for the blind consists of a block and a computer mouse with magnets 1 and 2 on it. springs 3, each magnet is wrapped in a coil winding 4, furthermore, housing 5 has three cavities 6 for mounting springs 3 and pins 7, and upper plate 8 has elongated cavities 9 for projecting the upper members 10 of the magnets. The magnets 1 and 2 have upper members 10 for transmitting the motion of the magnets 1 and 2 to the finger, and the shapes of the side magnets 2 are different from the magnet 1. The plates 8 and 11 are attached at the top and bottom of the magnets. Metal surface on which mouse is placed -12.

This device works as follows.

When the signal from the computer screen through the control unit (not shown) into magnets 1 or 2, it is attracted to the surface 12 on which the mouse rests. As the cursor passes through the white and non-communicating area of the computer screen, the pulse is not transmitted, the magnets 1 and 2 move together with the housing 5. The finger is always positioned on the top 10 of the magnet and does not feel any change. When the pulse arrives at magnets 1 or 2 and is attracted to the surface 12 on which the computer mouse rests, it moves in the same direction from inertia, while magnets 1 and 2, while standing and motionless, create a swipe of braille needles fingers. The same principle applies to graphical information.

This device significantly simplifies the design of this type of device compared to a prototype. This reduces production costs and improves information transfer.

Claims (3)

DEFINITION OF INVENTION 1. A computer mouse-type input-output device for the blind, comprising a block and a computer mouse, characterized in that it has a rectangular housing with magnets housed therein and elasticly mounted, and the housing is covered by a rigid plate at the top and bottom. three cavities for mounting springs and pins, and the top plate has an elongated cavity for inserting the top elements of the magnets, and this computer mouse is mounted on a metal surface. 2. A device as claimed in claim 1, characterized in that the computer mouse is equipped with a rectangular housing with magnets inserted therein and springs resting on the sides of the housing. 3. A device as claimed in claim 1, wherein the magnets are uniform in shape to their upper members, the lateral elements of which are shaped such that, when extended along the axial lines of the upper magnet elements, they form an apparent cone, and .