FI64475B - LAESTERMINAL FOER LAESNING MED FINGERKAENSEL - Google Patents

Description

1 64475

The present invention relates to an apparatus for receiving the message to be transmitted by the tactile sensation of fingers, 5 each of which consists of six pins palpable by the fingers, each of which is individually movable to the tactile position and the rest position.

According to the invention, a mechanical braille character is used as the "display terminal" or reading terminal 10 of the communication and communication means for the deafblind, in which the group of pins representing the embossments is distributed linearly, in contrast to the normal braille character.

The pin grouping corresponding to the cube of the lottery cube of a normal braille brand is used in the display terminals of calculators, gauges, etc. for the visually impaired. The relatively poor readability of a normal, one-finger tactile braille sign does not hurt on these devices because the reader can follow their own reading rhythm.

Instead of direct communication and communication settings-20 Tamla speed and readability requirement a this system is not satisfied.

The mechanical braille character according to the invention is characterized in that the character pins corresponding to the highlights of the braille code are arranged in a manner known per se from the keyboard of the braille code typewriters simultaneously with three fingers of two hands, one pin at the fingertips. The six electromechanically controlled marker pins representing the points of the braille mark are placed in the finger-30 plane in a linear array so that they can be felt simultaneously with the three middle fingers of the two hands. In the rest position, the tip of the pin is at the opening in the finger plane, below the finger plane in the unfamiliar finger. The group of pins corresponding to the alphabet displayed in each case rises above the finger level by the control circuit, each pin being palpated by its own finger. The bowling pin has its own visit. 11 * Me n i s m I n s a. Read the message. · * N 2 64475 character without moving fingers.

It has been found that by using the mechanical point recording device according to the invention, a communication rate corresponding to at least normal morse code is achieved.

5 It is important for the applications that the shape of the marker row and the distance between the pins can be varied to some extent.

The following figures are shown in the annex.

Figure 1 shows the location of the corresponding points of the normal and linearized brailleecode 10.

Figure 2 shows a linearized mechanical dot as a dot telephone display terminal.

Figure 3 shows a signaling of the drive mechanism of a signal pin as a principle.

Figure 1 shows the codes corresponding to the letters A and o.

In the embodiment shown in Fig. 2, the character bar of the dot character corresponding to the linear character code (Fig. 1) is arranged as a slightly curved parallel line a of the telephone keypad b according to the dot telephone keypad b-20. The openings in the finger plate are dimensioned so that they guide the probing fingers in the correct places on the pins. The distances and positions between the keys and the keys are arranged so that the 25 sensing fingers "spontaneously" search for the correct positions.

When two devices according to Figure 2 are connected together, two people can talk to each other via the devices. The message is sent with keypad b and received with pins a.

Each pin a is equipped with its own drive mechanism 1. la. Figure 3 shows an advantageous solution for the operation of a display assembled from commercial components. The pin a is attached to the freely moving anchor c inside the solenoid d.

3,64475

In the resting state, the lower end of the anchor is pulled somewhat outside the solenoid by gravity or spring. Unlike normal, the solenoid is supplied with AC current. When the solenoid receives a drive impulse, the anchor retracts into the solenoid 5, raising the marker pin to the finger. The interaction of the pressure caused by the finger and the alternating current causes the pin to vibrate, which substantially improves the readability of the character (a "memory image" of the stationary pin remains in the finger, which interferes with the reading of the next character.) The character set is controlled by a conventional digital control circuit.

The pin group can be assembled into a separate display terminal or can be placed on the operating keyboard of the respective device on a common finger plate.

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