Telegraphy – Systems
Patent
1987-01-02
1987-12-15
Schreyer, Stafford D.
Telegraphy
Systems
434114, 400 87, H04L 1500
Patent
active
047134950
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a device by means of which it is possible to receive and to transmit a message with the aid of the tactile sensation. The apparatus is intended in particular as means of communication for persons with sensory handicaps, such as deaf-blind.
The senses of sight and hearing are man's by far most important means of obtaining and transmitting information. Deaf-blind persons, however, lack both of these senses. Thus, their possibilities to communicate with other persons have been highly limited.
The Finnish Pat. No. 64,475 describes an apparatus supposed to facilitate communication by deaf-blind. The apparatus has six feeling buttons, each of which corresponds to one point of the braille character, as well as six keys, by means of which it is correspondingly possible to form a linear braille character. When two such apparatuses are connected together, two persons who know the linear braille can transmit and receive messages alternatingly.
The operation of the said apparatus is, however, highly restricted, because by its means a deaf-blind person can communicate only with a person who knows the linear braille, which person must additionally have a similar apparatus.
The object of the present invention is above all to provide an apparatus which permits communication by the deaf-blind with other people better than in prior art.
The apparatus now discovered is provided with a console by means of which it is possible to form a character in accordance with a code, e.g. the braille code, as well as with a number of feeling buttons, by means of which the corresponding character can be reproduced so as to be identified by means of the tactile sensation.
The console as well as the feeling buttons are connected to a control unit. The main function of the control unit is to convert the character formed by means of the console to a coded electric signal as well as, correspondingly, to form a sign for the feeling buttons out of the electric signal fed to the control unit. The control unit is connected with a modem, a printer, and with a recorder.
By means of the modem, the apparatus can be connected to the telecommunication network, e.g. the telephone network. The modem modulates the signals coming from the control unit to the form that can be transmitted in the telecommunicaton network, and correspondingly the other way round.
The printer converts the signals coming from the control unit to readable marks, e.g. to inkprint. Correspondingly, the printer converts the characters fed to the printer to electric signals and transmits them to the control unit.
Signals can also be fed from the control unit to the recorder, which is, e.g., a tape recorder. From the recorder, the signals can be transferred back to the control unit so as to be transmitted further.
The invention and the advantages obtainable by its means will be described in more detail in the following detailed description with reference to the accompanying drawing.
The sole FIGURE is a perspective view of the invention.
The most essential unit of the equipment is the "braille console" 1. The braille console has two keyboards; a transmission keyboard 2 and a receiving keyboard 3, each of the said keyboards comprising six keys, each key corresponding to one of the six points in a braille sign. When desiring to transmit a certain character the operator of the braille console depresses the transmission keys corresponding to the character. The braille console further includes a control unit, which converts the sign formed to an electric signal for further transmission, and correspondingly the control unit converts an arriving signal to a braille code on the keyboard of feeling buttons. Each of the keys on the feeling keyboard is provided with a pin, which, in its mark position, rises up from the level of the key.
The transmission keyboard is such that the character is not transferred into the control unit until after all of the depressed keys rise up. The character that has been tapped can also be be checked by means of the feeling pins. In this way
REFERENCES:
patent: 2972140 (1961-02-01), Hirsch
patent: 3417202 (1968-12-01), Kolpek
patent: 4507088 (1985-03-01), Wilson
Nakovammaisten Keskusliitto ry
Schreyer Stafford D.
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