DE1941858A1 - Device, in particular for converting a typewriter into a device for recording in Braille or for recording in another writing or code system - Google Patents

Description

dr. W. Schalk dipl.-ing. P.Wirth dipl.-ing. G. Dan ν en berg

DR.V.SCHMIED-KOWARZIK. · DR. P. WEINHOLD · DR. D. GUDEL

6 FRANKFURT AM MAIN

CR. ESCHENHEIMER STRASSE 39

PW / ki 15 »August 1969

State of Israel

(represented by the office of the Prime Minister)

Jerusalem
Israel

Device, in particular for converting a typewriter into a device for recording in Braille or for recording in another script or Oodesystem

The invention relates to a device, in particular is useful for converting a normal typewriter into a device for recording in Braille. In the meantime, you can Features of the invention can also be used in other fields of application.

Eb is a number of devices used for recording Braille known. However, some of the known machines are specialized and complicated with cumbersome mechanisms built up and therefore expensive. Other known Machines are unwieldy or cumbersome to use.

The present invention provides an apparatus for converting a normal typewriter into a device for Record of Braille, represented by the following (hatches or Characteristics is marked:

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a variety of character key switches, and was one switch for each character key of a standard typewriter, where the character key switches are in can be brought into such a position that they or. · a switch when the associated character key is pressed actuated / earthed or is; . -

a Braille recording device, which a variety of recording pens for producing the recording on a recording sheet or strip according to Ilaßgalbe des Braille codes, with an actuator for each the recording pen is provided;

an electrical circuit intended for the switching processes, which connects the character key switches to the actuators of the recording pens so that those Actuating devices are set in action, which are in the Braille code of the respectively pressed character key correspond, and

a device for advancing a recording sheet in the 'quiet t that this is advanced after pressing a font key.

Such a device has a number of important advantages, A first advantage arises in terms of the financial one Effort, because the user of the device has the option of using his own normal typewriter mid single / borrowed an additional device needs to be added. Another important one Advantage is a psychological advantage, which lies in the fact that a blind person is given the opportunity to develop his own specialty Typewriter with which he is familiar to use, he laid not the use of a new unfamiliar machine needs to learn. Furthermore, a blind man, by having both a Braille record as well as an ordinary one; Makes typewriter record, the MöglicMceit, a Correspondence with a sighted person in the usual manner, lead * and vice versa the, sighted person has the, possibility, to conduct a; -EörrespOhdenz with a blind person.

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Furthermore, the produced Braille copy s ± ss to the blind Possibility to check what he's typed (and in Braille) and this benefit can - z «3. for a blind programmer of a computer of be of great importance.

In the embodiment of the invention described below has: the circuit for performing the switching operations a Diode matrix, which has an input or input line for each the character keys and an output or output line for each of the actuators of a recording pen having. :

In the case of the application of the invention in connection with a normal typewriter, which has a shift key and one or more keys with two characters, each of these keys either one or the other of the two characters, e.g. B. symbols or characters, depending on whether the shift key would be struck with the two-character key or not, the according to ¥ öi? Direction has the further features that a shift key switch is provided, which is in a position can be used, in which he presses -fcnLrdy when he hits the shift key and that one or * each one .Switch for each of the two-character keys mentioned above and put into a ^ t / gebracltt can be, in which it is operated when each 'of the named Taisten is hit>; the device according to the invention: active in these! Furthermore, there is one or a first and a second And gate or gate for each of the above-mentioned two-character keys; thereby, the e'rste And-gate or - two Eiagangsleitungen on, one of which is d with the key switch and the other with the switch -jeweils ^ it is connected hearing two character key, and has this first lAnd * -Tor or Gate on an output line, which is connected to the single unit of the schöii S & i2üLiüxßg intended for the switching processes, which is connected to the unit of the similar

009809/119 0 BAD ORIGINAL

corresponds to the two-character key; also has the second And gate or gate an inverter and two input lines, one of which with the toggle switch is connected via the inverter and the other to the associated two-character key switch, an output line being connected to that input line of the electrical circuit intended for the switching operations which is connected to the corresponds to the other of the two characters.

Other features and advantages of carrying out the invention err are based on the drawings and the description below, in which the invention is shown somewhat schematically and only as an example, namely show:

Fig. 1 schematically shows an explanation of the main assemblies an embodiment of the device according to the invention; ·.

Fig. 2 is a circuit diagram to illustrate the operation of the Device according to Fig. 1, and

Fig. 3 is a logic circuit diagram to illustrate another - Feature of the invention.

In Fig. 1, a normal typewriter T is shown, which the usual characters or type keys 2 and a space bar or space bar 4 has. According to the invention is for the Typewriter an additional device 10 is provided, the a variety of electrical switches 12 (Fig.2), namely one Switch for each of the character keys 2 of the typewriter. These hereinafter referred to as the character key switch are arranged within the additional device so that they when Pressing the corresponding character key » The additional device 10 also has a further switch 14, which is arranged to be operated by the space bar 4 of the typewriter,. ■

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and the latter switch 14 will hereinafter be referred to as the interroom bar switch Of course, the aforementioned typewriter switches could and can also be used individually be assigned in such a way that / when the character key or the space switch rod is pressed, or they could be arranged in a special additional unit.

The switches 12 and 14 are each connected by means of lines 16 a circuit 18 for the switching operations and the output of this circuit is through lines 20 to a device 22 connected for recording Braille »The output of the circuit 18 for the switching operations contains a further electrical conductor 24, which is used for feeding the recording sheet (e.g. paper strip) Control device, shown schematically at 26 in Fig. 1, for a feed of the recording sheet, the each time each of the character keys is pressed

/Empty
or the mast pole. follows.

Referring to Fig. 2, the braille recording apparatus 22 has six recording pens P1 to P6 divided into two pens each with three pens containing, perpendicular columns are attached. Each of the pins has an actuating device S1 to S6, e.g. B. a solenoid or lauch magnet coil, which is used for actuation of the respective pin is used. In addition, the Braille device has the above-mentioned drive device 26 for the paper feed through which the paper is fed during each recording process is advanced by a distance required for a character recording.

The circuit 18 for controlling the switching operations has according to Pig. 2 a diode matrix 19, each with an input line 16 for each character key and ^ one. Output line 20 for each which has actuators for each of the recording pens. Each of the singing lines 16 is connected to one in Pig. vertically running line (i.e. with one of the lines

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1.6a to 16z) of the matrix, and each of the output lines 20 is horizontal with one each in the drawing running line (i.e. one each of lines 20-1 to 20-6) of the matrix. Rectifier diodes R are respectively switched between selected vertical and selected horizontal lines such that an output pulse each is generated on those lines 20 which, according to the Braille code correspond to those character keys after 12 who is pressed when a character key is pressed

will. For example, how the Di ο denma tr ixs circuit k after Pig. 2 shows the hitting of the character key for "ä" a pulse only on the line 20-1, the hitting of the key "B" pulses on the lines 20-1 and 20-2, the hitting of the key "C ⁿ pulses on the Lines 20-1 and 20-4 and pressing the "Z" button pulses on lines 20-1, 20-5, 20-5 and 20-6.

One of each of the pulse generators GM to G6 is each with one of the Lines 20-1 to 20-6 connected at the output of the diode matrix. One of the pulse generators is in turn with one the actuating devices SI to S6 for the recording pins connected. The pulse generators generate a standard pulse each time one of the switches 12 closes, see above that the actuation of the pens P1 to P6 for recording the Braille script is independent of the type (e.g. strength and duration) the stop of the typist is accomplished.

The pulse generators GM to Gf6 also generate one each From input pulse which is fed via a single output line 30 to a line 24, which the Yorrichtung 26 to Controls the advance of the paper strip so that each time a character key is pressed on the typewriter, one for One character each required goal distance or goal goal saunaiaae is effected. The paper feed is of course carried out after actuating the recording pins P1-P6. In the

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INSPECTED

Line 24, a delay circuit 31 can be switched on, to cause this required delay.

The switch 14 for the distance bar, the so-called space bar, is actuated when the space bar 4 is pressed and is connected by a line 32 to the line 24 of the device for the paper _{strip feed {} so that the paper strip feed by the distance required for a character by hitting the space bar.

The operation of the device results from the above description. When the user strikes a character key on the typewriter T , the character is printed by the typewriter in the usual way and, in addition, that holder 12 which corresponds to the connected character key is closed. The diode matrix 19 then generates a pulse on those of the lines 20-1 to 20-6, which correspond in the Braille code to the pressed character key, and the pulses generated in this way are transmitted to the respective associated pulse generators G-1 to G6, which are each assigned - Actuate the hearing solenoids or! Dauchmagneten S1 to S6 of the pins P1 to P6, which record the Braille. This is how the character is also written in Braille. In addition, actuation of one or more of the pulse generators G-1 to G-6 on the line 30 generates a pulse which is transmitted through the delay circuit 31 and the line 24 to the paper strip advance mechanism 26, whereby the paper strip is advanced by one advance element at a time the recording pens have finished their work. Advancement of the paper strip is also effected by hitting the typewriter space key 4, which closes the spacer bar or space bar switch and thereby transmits a pulse through the line 32 to the line 24 of the paper strip feed mechanism 26.

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Thus, the user operates the typewriter in the usual way; Way in which the normal typewriter output is produced, but with a corresponding Braille output is generated by means of the Brattille recording device 22.

In a normal typewriter there are many double elements-- or double-sign loads, each of which is respectively one of the two elements (e.g. a symbol or a lettering

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characters), whereby the two elements or characters / are arranged one above the other. and the character printed in each case depends on whether the typewriter shift key was pressed or not pressed at the same time. 7IeIe with two elements or two characters ₀ Print these keys either big letters or small letters of the character. Others of the two-element or two-character keys print different characters or symbols that are important for Braille. For example, a key can be designed to print or register a "dot" character (namely Zdäs'below element or character of the key) if the shift key has not been pressed, and to print or register a "comma" character . to register (ie ^ the "upper element or character of the key) when the Shift key is pressed.

To, in the present invention, the element to be printed or to identify characters, a switch is provided so that it is operated when the shift key is pressed, and

/ r for each
an upstream circuit is provided which determines whether the toggle key has been pressed or not. If the shift key was not pressed at the same time as the key bearing the characters, an electrical signal is fed to the input of the circuit for the switching operations at the point which corresponds to one of the elements (e.g. the lower element of the key); but if the shift key was pressed, the signal triggered by the character key is sent to the input of the circuit causing the switching processes at that point

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that corresponds to the other element or character (e.g. the upper element or character).

JB ¹ Ig. 3 shows a logic circuit which satisfies the above conditions. The shift key of the normal typewriter is denoted by 40, and the two-element or two-character key which can print or register either a "dot" character or a "comma" character is denoted by 42; the switches that are actuated by hitting the button in one or the other pail are the switch 40 ^f or the switch 42 ·.

The upstream circuit that should determine whether the Shift key 40 has been pressed or not pressed, has two And gates, denoted by 44 and 46 are.

The AND gate circuit 44 has two input lines, viz one to the switch 40 · connected line 48 and one to the Switch 42 'connected line 50. It also has an output line 52, which is connected to that input line the matrix 19 for the switching operations (Fig. 2) associated with one of the elements or characters to be printed, i.e. z, B, the higher element (in this case a "comma" character) the key 42 carrying two elements or characters.

The second and ~ gate circuit 46 also has two inputs, namely a ^{line 54 connected to the switch 40 f} and a line 56 connected to the switch 42 ^l . However, the line 54 is connected to the gate circuit 46 via an inverter 58. The AND gate circuit 46 has a ₆ -J J Hg _6n single output line 60 which is connected in this case with der'Eingangsleitung the matrix for the switching operations which, ie the other element or character, the lower character (in this case the "point" character) of the key 42 carrying two elements or characters.

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The circuit according to Pig. 3 works as follows: If only the key 42 (i.e. not also the toggle key 40) was struck, the input line 50 of the ^ nd gate circuit 44 a positive pulse, and the input line 48 of the. AND gate circuit 44 a grounded pulse (or a zero pulse supplied). Since now both input lines are not positive, the output line 52, which begins with the element or character located higher (the "comma" - Characters) associated, line of the diode matrix 19 is connected., Is, no output pulse generated. Will only the. If button 42 is pressed alone, the input line .56 the AND gate circuit 46 a positive pulse, and at the Input line 54 of this gate circuit is a grounded! Generated at ground pulse (or in Ifull pulse). Of the however, the latter pulse is reversed by the reversing device 58 before it is fed to the gate circuit 46, and thus this gate circuit receives two positive pulses. As a result, on line 60, which is connected to the lower Element or symbol (the "point" symbol) associated line the diode matrix 19 is connected, a positive pulse is generated. Accordingly, the lower element or character (the "Dot" mark) by the Braille recorder "punched or pressed in.

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If both the shift key 40 and the key 42 carrying two characters are pressed, the gate circuit 44 receives two positive pulses which generate a positive output on the line 52 which corresponds to that line of the circuit "for the switching operations (Pig. 2) is supplied - which is assigned to the upper element or character (the "comma" symbol) "Two positive pulses are also generated on lines 34" and 56 - but the pulse generated on line 54 is generated by the reversing device 58 reversed, so that the gate circuit 46 receives a positive pulse and a grounded or full pulse. Thus, on line 6O _9, which leads to that line of the circuit for the Sciialtvorgangs ;,

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which is assigned to the lower element (the ^M dot "character) does not generate an output pulse. Character (the "comma mark") punched.

There can be many modified forms and applications or types of application of the invention are made '. To the Example, the invention can not be in the form of an additional device to be used on a normal typewriter, but rather actually be built into the typewriter itself. Furthermore, features of the invention for recording (e.g. Bridging, punching or embossing) of code characters become »which are symbols or characters other than those in Braille, or a code other than Braille code belong., Furthermore, the signals that the circuit for the switching operations and the respective punching device for the paper strips are fed from a system for Determination or recognition of characters or characters or by a so-called ^ aBB »or by a tape reader how it is used in connection with office machines.

Others in. Possible modifications within the scope of the inventive concept, Modified embodiments and applications of the invention result automatically from the described embodiment.

In the drawings, in FIGS. 1, 2 and 3, the usual power supply and Bitek lead lines from or to a power source or power sources, and these themselves are omitted for the sake of simplicity.

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Claims (1)

PV // ki - ^ V - State of Israel • ic * " _mo + men (represented by the August 15, 1969 -Jttro of the Premier Mini sters) Jerusalem, Israel Claims Device especially designed for converting a normal Typewriter used in a device for recording Braille or also Braille, characterized in that that they have a variety of character load switches (12), each of which each of the characters keys (2) of the normal typewriter (5B) is assigned and can be attached and positioned in such a way that it is actuated when the associated character key is pressed; that further a device (22) for recording Braille is provided, which pins a variety of recording (PI, P2, P3, P4, P5 »P6) for recording of characters in accordance with the Braille code on a recording sheet or strip and for this purpose an actuating device (S1 to S6) is provided for each of the recording pens; that an electrical circuit for carrying out the switching operations between the character key switches (12) and the actuating devices (S 1 to S6) and connected to these is switched on so that those of the actuating devices are put into action which are in the Braille code correspond to the characters displayed; and that a feed device (26) is provided which feeds the recording sheet or strip each time a character key is struck. 98-0 9 / Π 9 0 Jl 2. Apparatus according to claim 1, characterized in that the electrical circuit (18) for carrying out the switching operations a diode matrix (19) which is assigned to each of the character keys (2) and assigned to each of the actuating devices (S1 to S6) for the recording pens (P1 to P6) each has an output line (20 or 20-1 to 20-6). 3. Device according to claim 1 or 2, characterized in that that the electrical circuit (18) for the switching operations on its output side contains pulse generators (G1 to G6), of which one each with one of the actuating devices (S1 to S6) for the recording pens (P1 to P6) is connected. 4. Apparatus according to claim 3 »characterized in that the pulse generator en (G-1 to Gr6) y is further connected to the feed device (26) for the feed of the recording strip in such a way that the feed device is supplied with a pulse after each stroke of a 8hrift character key through which the recording strip is fed. 5. Device according to one of claims 1 to 4, characterized characterized in that the space or space key (4) of the normal typewriter (S) is assigned a switch (14) and this is attached and in position can be brought that it is operated when the space bar is pressed, and that an electrical circuit (Line 52) a connection between the space bar (4) associated switch (14) and the device (26) for Provides advance of the recording strip such that Tl Ώ Oil the recording strip fee * each time the typewriter blank key is pressed is advanced » 00 9809 / HSrOi \ Device according to one of Claims 1 to 5, "in which the normal typewriter has a shift key (40) and one or more keys (42), each bearing two characters or elements and each of which is used for one or the other." to print or record two characters, for example symbols or characters, depending on whether the shift key was pressed or not pressed at the same time as the key bearing the two characters, characterized in that the shift key (40) has a switch (40 ¹ ) is assigned and this can be attached and positioned in such a way that it is actuated when the shift key is pressed;. that a switch or a switch (42 ¹ ) is assigned to each of the two characters or elements carrying keys (42) and can be arranged and placed in such a way that it is actuated when each of the last-mentioned keys is struck; that furthermore for each of the last-mentioned double keys (42) a first and a second AND gate circuit (44 and 46, respectively) is provided, the first of which has two input lines (48 and 50), one of which is connected to that of the shift key (40) associated switch (40 ') and the other ^ each with that associated with the corresponding double-character key Switch (42 ') is connected | that also eirebzw. one output line (42) for each first AND gate circuit is provided, which is connected to that input line (16) of the electrical circuit (18) for the switching operations are linked to which one of the two Sign corresponds to the double key! · that also the second and gate circuit (46) is an inverse? device (58) and IU% input lines (54 or «, 56), one of which is connected to the switch (40 ¹ ) of the toggle key (40) via the reversing device (58) ■ the is while the other is each with the corresponding 0098 0 97 1 190 ' Double-character key (42) associated switch (42 ¹ ) is connected, Lind that one or one output line (60) of the second And gate circuit (46) is provided with the one Input line (16) of the circuit (18) for the switching operations which corresponds to the other character of the two characters of the double key. 7. Modification of the gate direction according to one of claims 1 to 4 »characterized in that instead of a recording device (22, 18) for Braille-Oode a recording device is provided, which causes the recording in a different code or a different font. 8ο Modification of the device according to one of claims 1 to 4, characterized in that instead of switches (12, 4O ¹ , 42 ¹ ) »the character keys (2, 40, 42 ) are assigned, a system for determining or recognizing the characters or a tape or ear reader, as is common in connection with office machines, is provided as a supply source. The patent attorney .00980971 190 Lee rs e 11 e