BE670368A - - Google Patents

Description

  

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  "Timing of information processing systems
The present invention relates to information processing systems comprising means as well as other recording and / or computing devices, all the programming being under the control of one or more recording reading devices. , except when control has been transferred to an operator during information entry periods, auxiliary programming may be realistically by means of a device controlled by the position of a carriage.

   It relates particularly to the timing of operations in systems in which

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 the medium, orxo3.stxouent in one or more reading devices is read alone, character by character, the characters constituting the information to be recorded, interspersed with instructions serving to control the devices constituting the system. of commands in the recording medium occur at random and their grouping can vary from a single character to a large number of characters.
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  P, ua. Particularly, the present invention, in one of its aspects, relates to the timing of an operation performed by a reading device
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 in case, He is the seneral case, where. the printing device is the slowest part of the system.



  In most of the prior art devices, the timing has been made compatible with the operation of the printing device by limiting the output of a reader device to an acceptable speed.
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 b.e, ax the printing device. The Jtsts Patent.



  States of America nO 2.865.087 of December 23, 1958 a flü7, G "'liore 10, unnecessary in a cystem comprising a typewriter as a means of 3.r..prass.on providing means serving :: detecting "null codes" (ie) those which are described as having no effect on the mQohino write) a higher-1 vitoase, but only after a lapse of time enough has elapsed) 1. \ 1! ' ensure that a previous typewriter operation is completely finished, which is 4% by means which detects the advance of the various typewriter operations.

   11Bike with this improvement, there are appreciable periods of

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 during which the system waits for a printing operation to be completed, periods during which the reader device could be busy detecting control codes or other codes not directly related to the printing device.

   Accordingly, the present invention provides means for making the timing of the operations performed by the reading device independent of the operations performed by the printing device, except when the next code which is detected relates to to printing operations which cannot be performed until the printing device has completed the operation which is in progress.



   In a second aspect, the present invention relates to improved timer means for blank advancing the medium in a reading device to a desired position while a second reading device controls. the system. Prior art systems required the use of dual sense circuits and separate sources of clock signals for this purpose. The present invention makes use of the same circuitry and the same source of clock signals for this concomitant middle blank feed in a reader device while a second reader device controls the system.



   According to a third aspect, the present invention relates. fine-tuned timing of instructions comes from a "Field Control", a program device controlled by the position of a carriage. The

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 Prior art systems have used means making the instructions effective immediately upon entry of the carriage into position, or upon pressing a key initiating a cycle, while in the present invention the cycle enters. action by pressing any one of the keys of a keyboard, taking into account the difficulties due to too rapid operation of the successive keys, or to too slow movement of the typewriter carriage.



   In a fourth aspect, the present invention relates to the improved timing of the manually controlled blank advance of the recording medium, eg, a web of paper, in a recording device. Prior art systems provide continuous blank advance of the web through the recorder as long as a manually operated key is pressed.

   This arrangement is limited by the fact that advancing the medium over a predetermined number of steps is dependent on the skill of the operator. Accordingly, the present invention provides a means for advancing by a single step. not the tape in the recording device each time the tape advance button is pressed when the system is in "Single Pitch operation mode",
Consequently, the present invention aims to provide:

   - means for operating a reading device at high speed when the information detected has the nature of control instructions and has a

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 lower speed compatible with the speed limitations of the printing device when the information detected is in the nature of print characters or format instructions, the highest speed being obtained when the printing device is busy by an operation implemented previously by the detection of a print character.



  - A means serving to operate the reading device at the highest speed when the detected characters have the nature of control instructions and the printing device is already busy with a format instruction.



  - A means for making the reading device operate at the highest speed when the printing device is out of service and the characters detected in the medium are alpha-numeric characters which normally would be read at slower speed to operate the printing device.



  - Means serving to reduce the overall response time to an arbitrary set of instructions and data, so as to increase the productivity of the system.



    .. Des. means for making the medium in one reading device blank at high speed to a predetermined position, while the other reading device is controlling the system, without using a double detection circuit in the first reading device.



  - A means used to, blank advance the medium in a device at high speed, from reading to

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 a predetermined position while the other reading device controls the system, without using a separate source of clock signals.



  -. A means serving 4 to make a program instruction controlled by the position of the carriage act only by pressing any one of the keys of a keyboard, also taking into account the speed at which the keys are pressed.



    - A means ensuring a single advance of the medium in a recording device by pressing a key which normally produces a continuous advance, the single advance being conditioned by a means which also conditions a single advance of the medium in the device. tif of reading the recording.



   Other advantages and characteristics of the present invention will become apparent in the course of the detailed description which follows, given with reference to the appended drawings which give, by way of explanation but in no way limiting an embodiment in accordance with the invention. tion.



   On these drawings,
FIG. 1a represents an embodiment. actual tion of the system, and represents a typewriter, paper tape readers, paper tape punching devices, a control desk, and an optional arithmetic or computing device;
Figure 1b is a block diagram of the system, and it shows the relationships and interconnections that exist between the main components of the system.

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 system of the present invention, including input devices, information channels, user devices, control devices and clock devices;

   
Figs. 2a and 2b show a developed view of part of the main elements of a recording playback device, of a wiring diagram of the sensor elements to a playback device, respectively, such as. they are used in the preferred embodiment of the present invention;
Figure 3 is a detailed diagram of the information channels and the ecoding means used to control the typewriter:

   
Fig. 4 shows a detailed diagram of the paper tape puncher (punch) used as the encoded medium recording device;
FIG. 5 is a timing diagram illustrating the pulses which control the transfer of information in the system and the operation of system components, in accordance with various aspects of the present invention;
Figure 6 is a logic diagram showing the factors which control the detection and advance of the medium in the reading device and which control the typewriter decoding assembly;
FIG. 7 is a logic diagram of a part of the control code decoder, comprising an OR conditioner which signals the presence of such a code;

   
Figure 8 is a logic diagram of the remaining part of the control code decoder, and

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 it represented pulse conditioners allowing the various control elements to be selected;
Figure 9 is a shown logic diagram. feeling various elements of coimarde and the output signals they produce
Figure 10 is a logic diagram of the conditioning of the output signals from the various control elements;

   
Figure 11 is a logical disgrace of the system clock means, including the conditioning by which the frequency of the clock pulses is variably controlled from the maximum speed of the reader to a maximum speed. speed compatible with the speed of the typewriter, down to simple cycles under manual control;
Figure 12 is a logic diagram illustrating the factors involved in controlling a punching cycle;
Figure 13 is a logic diagram illustrating the factors which control the operation of the field control and the timing of the response to its instructions;
Fig. 14 is timing diagrams illustrating the operation of the field control;

   
Fig. 15 is a wiring diagram of an encoder matrix of the typewriter keyboard, including some common means for generating signals; and
Figures 16a, b are summer diagrams-

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 tY119 circuit mnt13 used in the embodiment code of the present invention.



  ¯Q01, .803>, x2S SYST 41 The iyf, j 4iaEi at which the pre-invention stap. pliqua oat represented in the figure and in the form of a synoptic diagram on the fibtUro 1: ± / and it generally comprises a machine a. write 100 having an input keyboard 120 provided with coding means 101 serving. provide signals indicating which key is pressed, control keys 121 of the system
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 teme, and decoding means 102 for automatically running the typewriter print and format commands, a program device 103 controlled by the position of the carriage, hereinafter referred to as "field control" .

   The rest of the system includes two
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 readout devices 104 as well as another input device: istrdt1en ..; 106 used to capture selected parts of information. The recording device 106 of the embodiment is a coded medium device, but it could be a slave writing machine, at will.

   Likewise, although shown only in Fig. 1a and in the block diagram of the embodiment, the system may include a computing device 107 (hereinafter referred to as a processing die) for performing arithmetic operations on. digital data supplied automatically
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 matically by the reading devices 104 or manually. by the keyboard encoder 101. Readers 104 detect the data step by step.

   The
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 recording media of the embodiment are

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 type constituted by bandas do pai3 perfordael although the present invention pulses also apply: back reading devices and recording for other types of medium, such as perfora cards,
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 magnetic tapes or cards, po- torahiquos film, etc ... The reading devices are essentially those written in United States Patent No. 3,141,958 of July 21, 1964.



  In the embodiment which is described, typewriter 100 is a typewriter modified to serve as input and output to the system. The other provision
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 tif d'errro6istreinent 106 may be a punch for perforating a strip of paper, similar to that which is
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 described in US Patent Application No. 338,359 filed January 17, 1964 and entitled: "Punching System". Full details of the patent can be found in the Patent and in the Patent Application.
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 Both the reading device and the punching device, respectively, only the parts relevant to the present invention being given here.



   On the block diagram of the system, shown in Figure 1b, it should be observed that the information from the input devices; device
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 reading 104, typewriter keyboard encoder 101, tava. is sent in information channels 108 from where. -olle goes to the user device, namely the print decoder 102 (which includes character bars and format commands of the modified typewriter 100 used in the embodiment), the dis-

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 positive da poin90nnsBo 106, or an input means 117 of the treatment device 107 (if such a device is coupled to systole).

   The coded information is comp14aen% "a and the real codes as well as their oôtjl4vientB can be sent at the same time to the device of use, at will. In figure 1b, I represent various general or very reactanals: the input logic element 109th output lociquo element 110 control logic element 111 and clock logic 11th 112. 000 elements are needed to process the information in order to provide the middle of the input. - before the reading device. In general, all the,: ix.atag- # ùu system is ffec-cuë from the logic block d% i;? rlooeg, the nrinciral3 security being a norsialasent self-oscillating multivibratour 113 , 'ui will be described with more details far away.

   The output of the multivibrator 113 d5terL, .ine the periods during which the information can be from a reading device 104 to
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 an output device 102 or 106 via
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 an input means 117 in a processing device 107 or in a logic control element 111. The vibrator 113 will then be called a Transfer Multivibrator and its output denoted by TP.
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  Each reading device 104 comprises
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 (see figure 2), a means of ontJènt 201 from the middle of Gnrēitremont, which has a strip of perforated paper 202, of eight-channel bound uiie and a posta of d: tactin1 203 Io inoyon of entra-nomont includes a continuously rotating motor 204o, a clutch to the cartioti 203, and a, -cbappument 206 controlled by a

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   electromagnet 207. In response to signals (Read operation) from the system, and which appear on a line 208, the drive means moves the tape 202 to a new code position, one step for each. signal, regardless of the duration of the signal.

   The detection station 203 contains a number of solar cells 209, the number of which is equal to the number of channels on the strip 202. The solar cells 209 are photovoltaic devices, which are arranged on a surface of the paper strip. relatively opaque 202, the other surface of which is exposed to illumination from a concentrated light source 210.

   The voltage output of an individual solar cell 209 is then a function of whether or not there is a hole (generally shown as 211 on the channel of strip 202) immediately above that particular solar cell. , a.) voltage being produced if there is a hole, 1 and no voltage being substantially produced if there is no hole.

   The output conductor of each solar cell 209 is connected (see figure 2b) to the base of a corresponding NPN transistor, normally conductive, at the junction 213 of a voltage divider network by resistors, one terminal of each resistive network being connected. to a 24 volt current source and the other terminal to a line 214. Line 214 comes from a read device conditioning circuit, which will be described later.

   If a conditioning signal (voltage at ground level) exists on line 214, run parallel with all the "other" terminals of the

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 voltage divider circuits, whenever there are holes 211 on strip 202, the output of ce] =
Solar cells 209 is sufficient to block the corresponding transistors 212. The voltage at the collector 208 of these transistors 212 then becomes negative.



   It should now be indicated that this description (unless otherwise indicated) will be carried out in a positive logic term, that is to say that when an output is "true", - this output is at ground potential ( or greater than this); when set "false", this output is at any negative potential. From the above, it is clear that the voltages of the collectors of the transistors are negative when there is a hole in the strip and vice versa. Thus, they are the inverses of the information which exists in the corresponding channel of the band 202. This is the reason why the input lines 215 in the information channels 108 carry the indications Chi, Ch2, etc.



   In addition, as is evident, and using common practice, a top bar is used in this description to indicate the complementary function.



   Figure 3 shows the output part of the modified typewriter (corresponding to the rectangle "print decoder" II 102) which includes a control device 301; 24 volt electromagnet for each character bar to be operated or for each format function that is to be ordered, the format functions being carriage return, tabulation, etc.

   The information / coded signals from the eight individual lines 302 of the information channels

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 No. 108 control a number of relays 303, the contacts of which are arranged in a double network of relays 304, in a well known manner around the electromagnets 301, so that by energizing the relays 303, in various combinations, one circuit and only one is established in each case, through the double network 304,

   which makes it possible to choose the desired solenoid from among the solenoids 301. The application of a zero voltage pulse to a terminal 305 of the double network 304 sa then results in the operation of this solenoid 301, because the The other terminal 306 of network 304 is connected to a source of -24 volts.

   The punching device 106 (see fig. 4) is a device which also operates step by step, the punches serving to perforate the strip of paper (not shown) each being controlled by an electromagnet 401 which corresponds to the punching device. one of the information channels located on the strip 202 of the reading device, and to an electromagnet 402 controlling the advance of the strip to be punched.
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 r0.r4xor .;

  r, rr GEU2aA.L
As mentioned above. the main source of time or timing is the multiple
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 T1 vibrator 1} 3, normally self-oscillating when JL.3 system is operating automatically, but which is taken out of service and only operates on one cycle during manual control, as described later.



  Multivibrator 113 has a normal self-oscillation frequency of 30 cps, the output being "high" (0 volts) for 8 milliseconds and "low" (-24 volts) for the next 25 milliseconds. The impulse of

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 The 8 millisecond output is used to control the "transfer" of information from the reader device to one or more user devices via the information channels 108. In fact, during this period of time. transfer, there is no actuation of the elements that must meet the code, but instead, conditions are established for choosing these elements.

   At the end of the transfer phase, as described later, clock pulses are produced, which pulses trigger electronic devices in the circuits controlling the operation of the selected elements, such as the bars. character, function commands, punches or control devices, as the case may be.



  At the very moment when the @F pulse causes the transfer of information from the reader device to the information channels, the reader device is also forced to advance one step to the eu-, next code placement. The reader or reader can operate reliably at the rate of 30 cps of the multivibrator, but this rate is however too fast for the modified typewriter 100. To ensure safe operation under all conditions of use. The system usually needs to feed information to the typewriter at a rate no greater than 10 cycles per second.

   For this purpose, the time logic element 112 is incorporated a monostable multivibrator or "one cycle" multivibrator 114, of 72 milliseconds, called the "decoder busy indicator" which is triggered at the time.

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 clock every time the output of the typewriter (print decoder 102) is operative. The output of the multivibrator a. a cycle 114 prevents modulating the aforementioned double relay network 304 which is located at the output 102 of the typewriter.

   It should be noted, however, that it does not prevent the multivibrator 113 TF from operating, which causes the reader 104 to detect the following code, approximately 25 milliseconds after the end of the preceding pulse.



  If this new code relates to the operation of the typewriter, then nothing happens at this moment, cr the state of the multivibrator at a cycle 114 indicator of occupation of the "decoder" prevents acting on the network 304 of relay, as well as one step forward of reader 104. Due to the duration of the output from the one-cycle multivibrator 114, only a repetition of the detection of the same code will occur. up to the third impulse: TF (where there is an even later TF impulse in some cases) as we will see, after the initial impulse. At this time, the previous operation of the typewriter should be completed, and the output 102 of the typewriter should be ready for the new code.

   It should be noted that if a typewriter function (carriage return, tabulation, etc.) has been initiated by the code detected on tape 202, means are used to extend the inhibit effect of the multivibrator. to a "decoder busy" cycle 114 until this function operation is completed.



   From the above, it follows that if the

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 The next code on strip 202 noted neither an alpha-numeric character nor a typewriter function, so the time interval following the detection of a previous codo at the end of a typewriter operation would be lost. In the prior art (US Pat. No. 2,865,487, supra), a great deal of time is saved if a large number of "zero codes" follow each other, but not usually saves little or no time, as usually a small number of these codes are interspersed with many typewriter codes, including long-lasting function codes such as return cart.

   Hence, according to the above-mentioned patent, although the initiation of a read cycle ensures the detection of the next code shortly after the operation of the typewriter has started, the response to the code is deferred. Up to almost half of an operation involving a character bar or up to almost the end of the operation in the case of a typewriter function, such as carriage return. Thus, at best, only less than one additional code can be detected between successive maneuvers of the character bars.

   On the contrary, in the present invention, it is not necessary to detect essentially the end of any movement of the typewriter, but simply to determine whether the following code is a command code or no.



   If it is a command code, then the response to that code can occur immediately; if it is not a command code, then the system should wait for an if--

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 gnal indicating that the typewriter can accept its next instruction. In this way, two additional codes can be detected between each character bar maneuver, and a large number of additional codes can be detected during the trolley passes, up to 29 codes if the return is made over the entire length. length of the carriage.

   In addition, in cases where a long life typewriter function such as carriage return is in progress, and the tape 202 oon. keeps control codes in a cycle of alpha-numeric codes which must not be printed, but which must be used in the punching device 106 or in a processing device 107, then there is no need to limit to "order code".

   It follows, from the present invention, as well as from the "control over" mode of operation described in United States Patent Application No. 157,425 of December 6, 1961 titled that it is possible to detect a code to block the response of the printing device (without acting on the operation which is already in progress), so that the codes. Subsequent alha-digitals without printing may receive a response at the high speed of the reader.

   This way one can detect up to. 29 command codes and alpha-numerics which can be answered during the time required for the carriage return or for other typewriter functions to be completed. Considerable savings are thus obtained. of time. This operating mode allows

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 to respond to the command code while the machine is. writing is in operation is called "parallel processing" and is described in detail in the following.



   PARALLEL TREATMENT
Reference is made to the general timing diagram of FIGS. 5a to 5r, which illustrates various aspects of the present invention for the description of parallel processing. Figures 5a to 5r show the timing with a reader 104 (hereinafter referred to as "Reader 2") initially in the "on" state, and the multivibrator 113 subsequently operating in free oscillation. Examples of oode which exist on the respective bands 202 of the driver 2 and in the other reader 104 (hereinafter referred to as "Reader 1") are shown in Figures 5d and 5c, respectively.



   Figure 11 shows the means for making multivibrator 113 operational. A ground level must exist on any one of the five inputs of an OR conditioner 1101 for multivibrator 113 to be made operational. A first input of the conditioner 1101 comes from the output of the multivibrator 113. This reaction is necessary to ensure that the multivibrator 113 remains operational for its full output duration (8ms) however short the duration of the start signal is. action. The next entry, that is, on line 1102, is from a processor 107 if this is coupled.

   It is indicated here simply to show that a processing device can also control the timing means. Line 1103 comes from an ET 1104 conditioner whose func-

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 tion relates to what is called. "Special Spacing") an operation described in greater detail further and that
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 fact that raontionnar here. the fourth, input, i.e. line 1105, comes from another conditioner
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 AND 1105.

   The function of the JT 1106 conditioner is to operate% 1 ± the multivibrator z to allow it to operate in self-oacillations whenever a reader 104 is on and certain other conditions are met, as follows. Each reader 104 being on, produces a cleared level on the line
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 1001, labeled "Reader On" (zig. 10) via a conditioner OR 1002, the inputs of the latter conditioner coming from outputs 913 and
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 914 from the daolonchb cost of commanda fp-flops 901 and 902 from Reader 1 and Reader 2, respectively (Fig. 9).



  There are three others in the ET 1106 conditioner, the other two conditions depending as seen
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 (Fig. II) of the signals on line 11C.1 3i "'b and on line 1108 Taa * 1? 5u, the first of these two entries again relates to operations carried out with a processing device. 107 and it suffices to indicate that this level is low when the treatment device 107 is in a limiting mode.
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 tie used to prevent manually initiated "Special Gap" operations, since a transfer instruction including a code to switch the drives could be produced and a gap initiated by mistake would detect an erroneous set of infer-
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 mations.

   The second entry, that is to say line 1108, is used to prevent op3rat.f the multi'vibra-

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   tvur TF 113 via the conditioner ET 1106 when the system is operating in Single Step mode, details of which will be given later. It should be noted that because all three inputs are at a high level as long as either reader 104 is running, multivibrator 113 is continuously operative, and therefore functional. operates in self-oscillation at 30 cps.



   In the example chosen, the first pulse which comes from the multivibrator 113 and which is represented in column 1 of FIG. 5a (row labeled "transfer"), prepares the detection of the code in Reader 2, because this Reader is running, through the ET 601 conditioner in Figure 6 (assuming that a processing device 107 is not coupled to the system or is not in the output mode if it is coupled), by applying a high level to line 214 of Reader 2 (see Fig. 2).

   The reader 2 being made operational, the presence of a control code on the respective strip 202 is sloppy by means of the OR conditioner 115 located in the control logic circuit 111 of FIG. 1. An output from the OR conditioner 115 indicates that the system does not need to wait for the completion of the writing machine operation before responding to the detected code and that Reader 2 can be advanced one step up to the next code position of its paper strip perforates 202.

   At this point, the nature of the code is again queried to determine whether there should be an immediate response or whether that response should be deferred until complete.

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 operation of the typewriter. The means for obtaining this result is shown in Figures 7 and 8 where it is seen that the code information from the channels is sent to a control decoder circuit 116 in order to send the signals on a line. particular output to the appropriate flip-flop command to make the device corresponding to the code operative.



   The code "order code in action" is the first code found on strip 202, as indicated by the abbreviation "CCA" in column 1 row d of the Example of figure 5. This code requests holes on channels 3, 4, 5 of strip 202 and its presence results in the blocking of the corresponding transistors 212. As a result, on input lines 215 of information channels 108 (see Fig. 3) the voltage drops on channels 3, 4, 5; that is, Ch3, Ch4 and Ch5 (complements) are "False".

   In this case, the voltage on the output lines Ch3, output Ch4 and output Oh5 302 (not shown but indicated) of the information channels 108, are at a high level, as a result of the reversals 315. The lines CH3 output, 'CE? and Output Ch5, 302 'are at a low level in a superfluous way, by following an output from the condition-nour ET 701 in FIG. 7, produced by the detection of the code "Command code in action". , there is a high level input on line 702 of the conditioner
OR 115. The high level on output line 703 coming from conditioner 115 (as well as the low level on inverted output line 703 ')

     

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 determines that the detected code is a command code.



   The output on line 703 forms the base of the pulse in column 7 of the row labeled "Control", Figure 5e, this pulse being in synchronism with the transfer pulse, Figure 5a. The output of ET conditioner 701 also appears on line 704a, which is one of the four inputs of a pulse conditioner 801 (Fig. 8). An output on a line 806 from the conditioner 801 triggers the code control flip-flop 903 in Figure 9.

   The other two inputs of the pulse conditioner 801 which are on lines 302 'and 707a' have complementary outputs (the latter being a combination of these outputs) from the information channels 108 and are used for decoding. in an Appropriate way the code "Code of Command in Action". The other entry on line 1003 is given in Figure 10 and indicates that a Reader is "in action" and the information is not "skipped"; (in the latter case, the command oodes must of course be ignored).

   With all of these inputs high in this example, the pulse conditioner 801 is armed, and when a clock signal is produced on line 1109 (see Fig. 11) at the end of the Pulse. Transfer, the pulse conditioner
801 gives an exit and the flip-flop 903 (Fig. 9) is triggered. The timing of this is shown in Figure 5g
During this same duration of the
Transfer, the "command" signal on line 703 provo. nant of conditioner OR 115 is provided as input.

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  (see Fig. 6) from another OR 602 conditioner and gives rise to a pulse on line 603. The pulse on line 603 along with a high level on line 914 from the flip-flop 902 of motor 2 (which indicates that Reader 2 is in action) and the Transfer impulse on line 1112 translate through an .ET gate 604 into the reader advancing one step. 2 (again assuming that a processing device 107 is not paired or is not "busy" if paired) by means of a high level on its line 208, as previously described as regards the drive drive means in FIG. 2.



   Thus, a second Transfer Pulse, shown on the second column (only one in five columns is shown) in Figure 5, is initiated approximately 25 ms after the end of the previous pulse.



  In the example chosen, the following code (see Fig. 5d, second column) is the code "automatic printing in action" indicated by "AP-On" in figure 5d which makes the output section of the typewriter operative. 100 (print decoder 102). The code "automatic printing in action" which has holes in the channels 3, 4 and 6 of the strip 202 is also a control code and the stages of operation described above are followed in an identical manner, except that different decode conditioners will act and a different pulse conditioner will be triggered to trigger the automatic print flip-flop 904, as seen in Figure 9.



     At the third Transfer Impulse (three.

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 sth column of figure 5a), the code in reader 2, for example in figure 5b, is the letter A. Via the ET 605 conditioner in figure 6, at the start of the Transfer pulse, in the presence of a high level on line "Reader in action" 1001, and of a high level on line 905 of "Automatic printing", because the automatic printing flip-flop 904 is triggered, as described above, there is a high level output, due to the presence of a high level output on line 1110 produced through the ET conditioner 1111 on wire 11.

   The output of conditioner 1111 is high because the "Decoder Busy" "one cycle" multivibrator has not been triggered. The code detected is an alphabetical code, not a command code; reader 2 does not skip the information; and a Transfer pulse is output from multi-vibrator 113. The output from conditioner 605 passes through an intermediate amplifier 606 serving to amplify the signal supplied to line 607. The amplifier (intermediate amplifier 606) also reverses signal, and hence the output on line 607 is negative, when "True".

   The line out
607 (called the Writer's Synchronized Decoding Signal) goes to two places in Figure 3:
1) It applies a negative voltage to a first terminal of the coil (not shown) of each relay 303 whose second terminals are grounded if the corresponding channel carries information, and a negative voltage if the channel does not carry information. in-

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 training.

   In this way, the relays in the channels carrying information are energized, they form and they open their various associated contacts in the usual way to establish a particular circuit through the relay network 304; and
2). It passes through a differentiation circuit 307 such that the turning positive pulse from the trailing edge of the negative signal triggers a pulse conditioner 308 previously armed with the Transfer Pulse from multivibrator 113 on the line 1112. The output of pulse conditioner 308 in turn triggers a one-cycle monostable multivibrator 309 which gives a high level (0 volts) output for 22 milliseconds.

   The output of multivibrator 309 is read back to a terminal 305 of the relay network 304, the other terminal 306 of which is at -24 volts. Current then flows through the circuit established by the relays and thereby operates the particular chosen solenoid 501 according to the code detected on tape 202 of the reader, in this case the code "A".

   To prevent the contacts of the relay array 304 from opening while current is flowing, the 22 millisecond output of the multivibrator at one cycle of Decode 309 is also returned to the
Synchronized Decoding Circuit of the Typewriter, at the input of the intermediate amplifier 606 by a line 310, connected in parallel with the output line. from conditioner 605 (fig. 6). The extension of the decode trigger signal due to this reaction is shown in columns 3 to 5 of the timing diagram, Figure 6i.

  <Desc / Clms Page number 27>

 



   At the end of each TF pulse from the transfer multivibrator (see Fig. 11), passing through a clock shaping circuit 1113, a 500 microsecond pulse is produced. This pulse, which appears on line 1114, is called the "Special Jump Stop Clock Signal" and is used as described in detail later. At the same time, the pulse is sent to a voltage divider circuit 1115 to produce a pulse called "Clock" having the same duration, but smaller in amplitude.



  The "Clock" pulse as previously mentioned appears on line 1109 and is generally used to trigger pulse conditioners in the system. For the sake of simplicity, the two pulses are represented by a simple clearance on the timing diagram, figure 5b,
Via an OR conditioner 502 (figure 6), during the duration TF, there is a high level on a line 603 although this level is now due to a high level on the input line. 1116 'Decoder Busy instead of a high level on line 703, because the code that is currently detected is not a command code.

   As before, there is an output on line 208 and Reader 2 advances one step to the next code position.



   Referring to the example shown in the timing diagrams, Figures 5a-5r, it can be seen that at the end of the third pulse TF, during which an alphabetic character oode was detected, the level of the "Busy Decoder" (shown in figure 5f) has become

  <Desc / Clms Page number 28>

 Student. The cause is shown in Figure 11.



  The pulse conditioner 1117 in this figure, is armed under the conditions of the example, because the level on line 1001b "Reader in Action" and line 905 "Automatic printing" are both high, and In addition, the level on line 1110a coming from the ET conditioner 111 is high, because the one-cycle "Decoder Busy" mul- tivibrator 114 is not oscillating (the voltage on line 116'b being consequently high), the detected code is not a command code (the line 7031 Command of FIG. 7 being consequently at a high level),

   drive 2 is not jumping (line 1004 '(Logic Jump Circuit shown in Fig. 10 is therefore also at a high level) and multivibrator 113 outputs a TF pulse on line 1112. Accordingly, the occurrence of a clock pulse on line 1109 triggers the pulse conditioner 117 and thus, in turn triggers the "Decoder Busy" cycle multivibrator 114.



     The occurrence of a fourth TF pulse produces a high level on line 214 of Reader 2 via conditioner 601 of Figure 6, as previously explained. The code on strip 202 (the letter B) is detected, but the motor does not step at this time because none of the inputs to the OR 602 conditioner is high, the multivibrator is one cycle. "Busy decoder" being in action, the Busy decoder line 1116 'is at a low level, the code being an alphabetical code, the command line

  <Desc / Clms Page number 29>

 703 is at a low level '; the typewriter being operational, the Automatic printing line 905 'is at a low level;

   It should be noted that a combination in an OR conditioner of the inputs of the two Print Control flip-flops is necessary if there is a set of slave prints and the reader is not brought into a print mode. spacing, the line "Logic Jump" 1004 is also at a low level.



  Thus, all that occurs at the time of this fourth pulse is the fact that the code which is at the detection station 203 of Reader 2 (letter B) is detected to determine its nature. Likewise, at the same time pulse TF, there is no output from OR conditioner 602 and Reader 2 does not advance one step either.

   The "Decoder Busy" one-cycle multivibrator 114 returns to its normal state at some point between the end of the fifth pulse and the start of the sixth TF pulse, the latter occurring about 100 milliseconds after the start of the pulse. third - pulse TF during which the code of the letter A was detected on the band 202. Retrieved previously described, the decoding relay 303 acted and a pulse was sent by the circuit comprising the solenoid 301 "A", so to operate a bar with character A (Fig. 3), an operation which is completed in less than 100 milliseconds. Consequently,

   at the time of the appearance of the sixth pulse TF, there is again a code detection for the letter B, but at this time, there is also an output from the OR conditioner 602 because the level of line 1116 'Decoder

  <Desc / Clms Page number 30>

 Ocoupé is high again. There is therefore an exit on line 208 "Avance du Lactour 2" and an exit
 EMI30.1
 "Decoder on line 111 Gt as well as a strong Synchronism Decoding of the machinas write on line 607 stJJ.'ve.nt 0. excite Io soldnoxdo 301" bu 'in the way explained for printing the letter A and with time relations such as those shown
 EMI30.2
 oontées on crures 5, 5 ± and 51 respectively.

   



  At the seventh TF pulse, there is a code
 EMI30.3
 "punching in action" at the detection station 203 (see FIG. 5d). The holes on channels 3, 4 and 7 which re-
 EMI30.4
 present this code ensure an output from OR conditioner 115 because there is an output from ET conditioner 706 on line 708 (Fig. 7). The resulting output on line 703 advances the reader one step (see Fig. 6) through OR conditioner 602 and ET conditioner 604 through line 603, even when the level of "Decoder
 EMI30.5
 Oco \ .tpé "is 61AV6 (which indicates that an operation is in progress for the machine to be written. The output of the conditioner P ,, 12,706 (Fig. 7) is also sent to a pulse conditioner 802 (Fig. 8) via line 708a.

   The other inputs of the pulse generator 802 are also high level during the duration of this TF pulse, so that there is an output on line 803 at clock time, which activates the device. punch-
 EMI30.6
 swimming by triggering the fl12-flopà3 punching 906 which shown in Figure 9. The timing relationships are shown in Figure 52. Similarly, at the same time

  <Desc / Clms Page number 31>

 tth TF pulse, a cancellation code, consisting of holes in channels 1 to 7, is detected on tape 202 of Reader 2.

   By means of the ET conditioner 311 connected to the lines 302 of the information channels 108, the presence of the Cancellation Code or the Special Jump Stop Code described later is detected. With the output of conditioner 311 being used as another input of conditioner OR 115, cos ooes also give rise to a high level on command line "703", which results in Reader 2 moving forward one more time. not.

   It should be noted that a blank code, that is to say the absence of any hole in the tape, except the advance hole of course, is also treated as an Order code "so that no time is wasted in delaying the advancement of one step of the read for these codes. In this way, it is evident from Fig. 5 that the present invention provides a means of permitting. detect and respond to two command codes during the time a character bar is operating.



   In Figure 5, columns 9-11 and 15-22 further show how an alphabetic code can be detected and used while the typewriter is in operation. Only the last part of the example will be presented in detail because the time saving obtained for this is the most obvious.

   Before going into the details of this part of the example, it is possible to examine the re-recording of selected parts of the information, by means of the punching device 106. The circuit

  <Desc / Clms Page number 32>

 The logic involved in the punching operation is shown in Figure 12.

   It can be seen that the output of an "ET conditioner 1201 passes through an amplifier 1202 to give an output on a line 1203 bearing the label" Synchronized Punching Pulse. "Line 1203 of" Synchronized Punching Pulse. "is connected in common to a terminal 403 of each of the punch solenoids 401 and the feed punch 402 (see Fig. 4). Amplifier 1202 is required because of the power demanded by solenoids 401 and 402.



  The label for line 1203 is marked "Negative Level" because the intermediate amplifier 1201 reverses the signal and the voltage on this line is negative when the output is "True" (similarly as output 607 of the Writer's Synchronized Decoding Pulse). As a result, as briefly explained previously, when all inputs of ET conditioner 1201 are "True", a negative level appears on line 1203 connected to one of the terminals of feed solenoid 402. Because of this, that the other terminal 404 of the advance solenoid 402 is still connected to ground, the advance solenoid 402 is consequently energized.

   Any of the puncture adenoids 401 receiving a voltage of 0 volts at its other terminal 404, upon detection of a hole in a corresponding channel of strip 202, also functions.



   The ET 1201 conditioner has three inputs 1112, 907 and 1204. Line 1112 comes from the TF 113 multivibrator and is at a high level.

  <Desc / Clms Page number 33>

 whenever there is a TF pulse. Line
907 is from the triggered side of punching flip-flop 906 and is at a high level whenever punching device 106 has been activated. Line 1204 comes from a conditioner OR
1205 connected to three ET 1206, 1207 and 1208 conditioners.



   The ET 1206 conditioner gives an output whenever all three inputs' Command '703', Logic Element of Skip 1004 'and Busy Decoder 1116' are 4 at a high level. ET conditioner 1026 represents the normal command to punch alpha-numeric characters while Print Decoder 102 is in action. The ET 1207 conditioner represents the means for punching a Command Code when the system is in the "Command Code Stop" mode, ie not obeying the "Command Code".



   The inputs of conditioner 1207 are line 1004 '
Cirouit Logic Jump, line 1001 Reader in Action, 'line 908' Command Code and line 703 Command.



   The level on each of this line must be high, in order to give a high output through the conditioner OU 1205 and thus obtain the negative level - of the Synchronized Punch Pulse on the line.
1203. The third conditioner ET 1208 gives the possibility of obtaining the negative level on line 1203 when an alpha-numeric code has been detected, but the Print Decoder 102 is not operational and the Reader is not, "skipping" and therefore the code can be saved immediately, regardless of the state of the 114 "Deco- cycle multivibrator.

  <Desc / Clms Page number 34>

 deur Ocoupé ". The four inputs of the ET 1208 conditioner include the 703 'Command line,

   of line 1004 Circouit Logique de Lump, of line 1001 Lecto in Action, and of line 905 'Automatic Print'. Again, the levels on these three lines must be raised to be able to Obtain a negative level on Synchronized Punch Pulse line 1203. Figure 5q shows the output of line 1203.



   Looking again at Parallel Processing, that is, reading information from the tape and responding to it while the write machine is "busy", the Synchronized Punch Pulse negative of figure 59 which is synchronized with the ninth pulse TF in figure 5a is obtained through the ET conditioner 1206 of figure 12, because all the inputs of this conditioner are at a high level (note rows! and f in figure 5, inverting the values when necessary).

   The "Cancel Code" at the previous TF impulse (Seed impulse) and the Code "Automatic Print Stop" at the next TF impulse (10th impulse) do not result in a Synchronized Pulse of. Punching because these coes are command codes.

   So at time TF there is a low level input to the conditioner '
ET 1206 on line 703 'and a low level input in conditioner 1207 on line 908' Command 'of Code (because the code command flip-flop
903 is triggered) .The following three codes, which occur during periods from the eleventh to the thirteenth pulse

  <Desc / Clms Page number 35>

 Its TF ot the four codes which occur during the periods from the seventeenth to the twentieth pulse, are alpha-numeric codes and would not normally be punched while the "Decoder Busy" signal (Fig. 5f) is at a floor level during the return movement of the carriage initiated in column 15 (Figures 5a and 5d).

   The ET 1206 conditioner therefore does not give a Synchronized Punch Pulse signal, but the ET 1208 conditioner does punch in this case, as seen by the Synchronized Punch Pulses in columns 17 to 20 of Figure 5q. The reverse occurs when the IA Auto Print 904 flip-flop is triggered, as seen at the twenty-sixth TF pulse, where the code "5" is detected, but is not printed. nor punched the first time it is detected that the one-cycle "Decoder Busy" multivibrator has been tripped, as seen by the signal on line 1116 (see Fig. 5f).



   As described above, during the movements of the carriage in the typewriter, a considerable time is available to detect control codes, and even alpha-numeric codes, in: The case where these must be used by equipment other than the typewriter. In order to read a suocession of these at these times, it is necessary to examine again the circuits of figure 6 which relate to the necessary means. It can be seen here that one of the inputs of the OR conditioner 602 consists of the line 905 'labeled "Automatic printing", this level being

  <Desc / Clms Page number 36>

   indicated in figure 9.

   In the presence of a high level on line 905 ', an output is obtained on line 603, and as a result, Reader 2 advances one step between the seventeenth and the twentieth TF pulses emitted by the multivibrator 113.



   In summary then, the OR conditioner 602 makes it possible to advance a reader 104 step by step towards a new data position and to act on this new data, not only when the decoder 102 of the typewriter does not. is not busy, but also when the typewriter is in a state where it cannot respond or a control code is detected in reader 104 or reader 104 is performing a Skip or Space operation. The use of these last three controls makes possible the novel "Parallel Processing" of the present invention.



   JUMP OR SPECIAL SPACE TIMING
Another case of application of a special timing is that of simultaneous operation of the two readers of the typewriter described here. As is usual, a single Reader can supply both character and command data to the information lines in the machine. That is, only one spin can be in action. This is due to the fact that only one "Commutation" code (channels 2,3,4) can be punched on a tape and therefore there is no provision allowing a direct code choice. 901 flip-flop or 902 flip-flop.

   As a result, as can be seen in Figures 7 and 8, when the "Switching" code is detected, there are outgoing lines on the lines.

  <Desc / Clms Page number 37>

 
 EMI37.1
 709 and 710 * These outputs, (as well as the outputs 00 found on the other lines represented on it 10 ot that one sujposo exiotor for pCl ". 1ottro cat exposed) cc translate by the trigger of that of the flip-flops 901 oet 902 which is restored, ob the restoration 1: Ùi: asCi.en'i; 10 that back,: 1Ô.1.î;! S flip-flops which is disc1en ... che. It follows that the command is cO: '' lL1uteo of another Reader 49 11. As an exo ::. pl0) if Reader 1 so finds ksi. la C (Fl! 1f.llldo, it oxicto uneaoctie on line 9lu coming back from the triggered side of the 901 flip-flop.



  Lirsna 913 was an ontnlo of a two-entry ET 1005 conditioner (Figure 10), the other entry of which does not exist due to the fact that a high level on this side is indicated. that no reader nlettoottio a Jump or Space will and that the systrie functioned according to the uode IICo! 'lil8ndo 00 Ov9.o ", a'ost-à-diro that it responds to 00.' des de cO'JJ: 1a.o.ë'.C) such as "CO # \ utation".
 EMI37.2
 crimping on line 913 produces an output on
 EMI37.3
 line 1006 coming from the T 7.0f5 conditioner. In figure e, we see that the line 1006 feeds the condi- r.cn7zoux;., With pulses 807 and 809j whose output lines 803 and 810, respectively, constitute inputs on the recovery side of the flip-flop 901 and the trigger side of the 902 flip-flop.

   The other inputs of the pulse conditioners 307 and 809 come from lines 709,? 1.0 and from line mï6 021, all cos
 EMI37.4
 lines show a high level when the code
 EMI37.5
 "Coonutation" is detected and consequently the states of
 EMI37.6
 flip-flops are reversed to place the order

  <Desc / Clms Page number 38>

 
 EMI38.1
 , from one Reader to the other. Sensitive circuits can be drawn for the case where Reader 2 is "on" when a "Switch" code is detected.

   In addition, with regard to the manual control dis Readers 104, bioii that not oD: t'é3ntú, the circuit starting from the switching of a control key of a given reader and al-
 EMI38.2
 J-ant to the recapuctive flip-flops 901 or 902 crosses a conditioner ut having as input Io level Leïîu 9m "liâli on the icon 1001, in figure 10. As a result, read:; 'has to press one or the other key from oommwiàv to the encoder while the other Reader aand the command has no effect, which again allows a single reader to be "in action" at any time. given.



   At times, control of the system is about to be passed from]. 'One of Drives 104 to the other, but the other Drive 104 has been stopped, its tape.
 EMI38.3
 202 P-% found according to a position or desired information Does not exist. It may then be necessary to jump over a large section of the tape 202
 EMI38.4
 in the other Reader. If the jump was made successively in relation to the operation of the first player, additional time would be lost. Do we know how to jump? the other Reader to search for the beginning of the desired information while the first Reader
 EMI38.5
 nchévii the detection of information on its 202 band.



    Prior art structures have made this leap by using dual circuits for the Lec- turns and separate time generators in order to allow
 EMI38.6
 control system by a single Reader, all

  <Desc / Clms Page number 39>

 simultaneously carried out the search indicated above. According to the structure of the present invention, however, it is not necessary to have circuits
 EMI39.1
 doubles and of e6néTùt9urs toe tMmpQ neépards for this operation called hereafter <Ex "Special Jump".

   The marnas circuits are used, but they are made operative for a special detection of cods in the Reader.
 EMI39.2
 norninalernent "ai <râ.14 "lÔ4 to a different lead do colui de: The detect -iomalu of codcj3 in the Player" in action "104. so that the code" Stop Special Skip "can be detected when the tape 202 is in drive stop 104 advances \ blank otherwise.



   The structure for performing the 'Special jump', described above is shown in the form of a mo-
 EMI39.3
 yen allowing to explore 86parriently the inf ovation of L3o'cer 1, after exploring the information of Reader 2 during normal operation of Reader 2, although the "Special Jump" may occur when no
 EMI39.4
 of readers is not in action, or even when the Luc- teur 1 os normally opt; .ratif. The explanation of pT- <deny case is as follows.

   When a code performing
 EMI39.5
 a "Special Jump" (caiaux 1, 3 4, 7 and 8) is read in Reader 2, this Command Code passes through the conditioner OR 115 (1'ie. 7) to give the 9. ,, gnal "Oo <nmand "on line 703, and Decoder circuit 116 to output on line 804 through a pulse conditioner 805 (see Figures 7 and 8) triggered by the clock pulse on line 1109.

   The 804 liano is tied to the same odds triggered by a 909 Jump or Special spacing flip-flop (Fig. 9) which, by following.),

  <Desc / Clms Page number 40>

 is triggered at clock time (see column 22, figure 5r) giving a high level on output line 910 of the Special Jump. As can be seen in figure 11, the TS 113 multivibrator is made operative via an ET conditioner 1104 as well as via the normal conditioner 1106,

   10 ET 1104 conditioner intended to allow a Special Jump operation when none of the Readers are "in action" in the cases described below. During the following TF period, in the presence of the high level on the Special Jump line 910, the TF pulse passing through the ET 608 conditioner and the OR 609 conditioner (see figure 6) initiates the Special Jump operation by advancing with a step, Reader 1.



   During the "Special Skip" operation, the detection of codes in strip 202 of Reader 1 should not depend on whether the Reader is "in action", 0 1 is .. that is, it is returned. operative in the normal way, and furthermore, the timing must be different, as Reader 2 may be "in action" and a counter output from Reader 1 at the time of the TF pulse cannot be allowed. For this purpose, the output on line 1114 from clock generator 1113 (Fig. 11) is used to allow detection of codes in Reader 1 through ET conditioner 610 and OR conditioner 611 (Fig. 11). 6).

   In addition, the output on line 1114 called the “Special Jump Stop Clock Signal” is differentiated, as described later, so that the trailing edge of the pulse on line 1114 determines the timing of the pulses. conditioners

  <Desc / Clms Page number 41>

 impulse interested ..



   The stepping of drive 1 and the detection of information on its tape 202 continues until. than a "Special Jump Stop" code (channels 1, 2, 4, 5,
6, 7, 8) is available in the information channels, when. there is an output from the ET condition 311 (see Fig. 3) mentioned above. In addition, the output of this conditioner, -as well as a high level on the line 215a input of Ch3 (which is distinguished -'as well from the "Cancel Code" which has an output on all channels including Ch3) arms a pulse conditioner 312.

   The pulse conditioner 312 (similar to the pulse conditioner 131.1 described later in the chapter "Typical circuits" except that it is a positive logic pulse conditioner and includes one more input) includes a resistor-capacitor circuit which differentiates the Special Jump Stop Clock pulse. "Due to the presence of an inverter 314, the differentiated output has a positive tip at the anode of a diode. (not shown but which is similar to diode 1603 of pulse conditioner 1311, except for polarity) at the trailing edge of a Jump Stop Clock pulse '
Special.

   The voltage divider 314a limits the amplitude of the paint in such a way that the isolation diode of the pulse conditioner 312 is not biased on the line until the latter is fully armed, ie. that is, when both inputs exist. The conduction of the isolation diode is then due to an output signal on line 313 at the trailing edge of

  <Desc / Clms Page number 42>

 Clock pulse Stop Special Jump. This exit restores the 909 do Special Jump flip-flop (see Fig. 9).

   When the triggered side of the flip-flop 909 goes low, the ET 608 conditioner (Fig. 6) no longer allows the search for Special Jump, that is, the step-by-step advance independent of the Reader. 1 break .. The Cancel Special Jump Stop signal also goes to the OR conditioner 115 in figure 7 through line 316 and gives an output on "Command" line 703 when the "Special Jump Stop" code is detected on the strip 202 of Player 1 by the Special Skip Stop Clock signal, as can be seen in column 29, figure 5e,
It is evident from the foregoing that by activating the multibraeur 113 by the conditioner ET 1104 (mentioned previously)

   and the step-by-step advance of Reader 1 via the ET 608 conditioner, the Special Jump can be performed when none of the readers are active. In other words, spacing or Special Jump when none of the drives are in action can be done by triggering flip-flop 909 using a hand-operated switch, or it may happen that Lec-; day 2 can be stopped by detecting a Stop Code on its 202 tape before Reader 1 has detected the Code
Special Jump Stop on its lane 202.



   Note that Figure 6 shows a structure for a "Special Skip" limited in advance of Reader 1 blank while Reader 2 is in control of the system. It is obvious that a conditioning

  <Desc / Clms Page number 43>

 
 EMI43.1
 similar - could be done with additional entries coming from lines 913 and 914, -, day allowing Reader 2 to advance blank, leaving Reader 1 to the system co-wave. In this way, the, am.e 0 from that of the Readers which
 EMI43.2
 out of service could be brought to a partial position.
 EMI43.3
 while the Reader in use is under control of the system.

   Such a concomitant operation of both readers, when nomiyialorient it is "out of service" is an Obvious variant of the description and to..ibe therefore within the scope of the pre-
 EMI43.4
 feels invention.
 EMI43.5
 h: ç :: J1.G DE! .-. i C J'LiaL.i DE 0: iA? T As used here, the term "Coi- uande d0 Chnnp" refers to a: .ioyon intended for control on COillpot ..: lnts of the system by the position of the carriage, that is to say the setting or stopping of various control elements of the system to. different positions of the carriage. The nechanical structure is only sketched here, but the frame can be of the type rerf: scntw, #clr cxc: ple, in the United States Patents of Aï: lGriquc --il k.784. '785 of 12 bars 1557 and n 3.1L0.3i? 1 of February 4, 19+.

   This last form is the pre-fàréo foze and the corresponding structure will be repeated here. La ctructuro pre ± 4rlo'do COi1T. \ Ande do Champ son-;, round (see figure 13) a strip of perforated paper z01 to eight C: lqtUC (ndiblable to the strip 202 back readers). fixed on UM lae port-ndc 1302 conductive of electricity .lontJc on 10 machine carriage
 EMI43.6
 write (not shown). Eight contacts

  <Desc / Clms Page number 44>

 Appropriately mounted 1303a-h contacting strip 1301 closes a corresponding circuit whenever a hole 1304 is programmed to be formed on one of the eight channels of strip 1302.

   In the system of this patent application, field control is only used during manual entry to block punching device 106 and / or activate Reader 104 when holes 1304 are detected in corresponding channels. Field Control Strip 1301. Obviously, Field Control could be used to activate or stop other devices, such as additional punching devices or a servo typewriter. The Chapp Control cannot operate when a Reader is in motion or when the carriage is reversing.

   The limitation to manual entry is not an inherent limitation and the aim is to ensure automatic operation under the control of a Reader, even if what occurs is manual entries.



   The new aspect of the structure is the timing of the Field Commando, ie a "Field Command" command does not immediately become effective upon entering a field position. carriage, according to which a hole is the object of a program, which distinguishes it from the assemblies of the prior art. One reason for this difference is that it has been found that activating a "Field Control" command by manual movement of the carriage to bring it into this program position

  <Desc / Clms Page number 45>

 
 EMI45.1
 was an inéwirablo source of operator error. Accordingly) it is necessary to press any one of the keys of the keyboard 120 for action-
 EMI45.2
 to control Cha1p.

   The 00 *. Chi-iron logic circuit 1-1) is shown in Figure 13. An induction conditioner 1505 is used to block the punch device 106 and a pulse conditioner 1306 is used. to put the Lec-
 EMI45.3
 tor 1. (similar circuits not shown could 8tio be used to control Reader 2). The clock input to each of the pulse conditioners comes from a circuit described later.

   Five conditions are necessary to block the punching device 106, these conditions being as follows! 1 the punching device must be in action, the Command
 EMI45.4
 de Cluap (flip-flop 911) must be in action a hole 15S4 must be 0.t (. "', tee in the punching commando c-nil (3'0-Chl) of lnbande 1301 de Coniando de Field un nu1tivibratp.u there must have been triggered a cycle 1307 of activation of the chsrip Ccr.1ando (also described later), and there must be a pulse to trigger the armed pulse conditioner 1305, so as to give an exit on line 1308 in order to block the punching flip-flop 905 (Figure 9).

   Likewise, four conditions must exist to activate Reader 1: the chanp command (flip-flop 911)
 EMI45.5
 must be hearth again on ction, -n appropriate hole 1304 (placed on tJh3) must be detected on the band z the uu1tivibrûtcur at a cycle 1307 of ise in Action of the Control, land of 0hci, ip must have been triggered again And @ there must be a pulse to trigger the condition-

  <Desc / Clms Page number 46>

 Pulse neuron armed 1306, so as to give an output on line 1309 to trigger flip-flop 901 of Reader 1 (Fig. 9).

   It should be noted that when a hole 1304 is detected in the control channel of Teacher 1 (FC-Ch3), an output is also sent, as seen in figure 13, to the keypad lock circuit by line 1317a for reasons which will be indicated below.



   As explained previously, the operation of each alpha-numeric key and of each function control key on the keyboard 120 occurs by the production of a TF pulse on a line 1112. The clock signal which manifests itself on Line 1109 at the end of this TF pulse could be used to trigger Field Control pulse conditioners 13C5 and 1306, except for one factor.

   As can be seen in Fig. 140, under so-called "runaway speed conditions" obtained by successively pressing @@ ux keys at a rate which considerably exceeds that which can be sustained normally, it would be possible to move the carriage to bring it to a position a. which a Field Control hole 1304 is punched, without activating (or stopping) the corresponding assembly, since the second TF pulse and the detection of Field Control hole 1304 might not occur coincidentally, as seen in figure 14C, by the relative positions of the end
1401 of the TF pulse and the start 1402 of the output from a contact 1303 detecting a hole 1304 of
Field Command.

   Figures 14b and 14d represent

  <Desc / Clms Page number 47>

 comparable information for normal Field Control cycles. Accordingly, the Field Control clock circuit represents within the assembly 1310 delimited by a ,:

     dotted line in Figure 13 is used to produce a series of pulses 1403 (at a rate of about 2000 cycles per second) for a duration of about 17 milliseconds after the termination of the TF pulse. The pulses 1403, called Field Control Clock Signals are used to trigger the Field Control pulse conditioners 1305 and 1306 and block or activate the respective control flip-flops 906 and 901.

   This series of clock signals 1403 thus ensures that all holes 1304 of the Field Control strip 1301 are detected and received a response, regardless of the speed of movement of the carriage) including that which comes from being has pressed successive keys at a "runaway speed".



  As can be seen in figure 13, the Field Control clock circuit consists of a pulse conditioner 1311 serving to activate a multivibrator at a Field Control Activation cycle 1307 which remains in action. for about 17 milliseconds. The pulse conditioner 1311 is triggered at the end of the TF pulse on line 1112 as a result of the differentiating effect of the pulse conditioner circuit as described later.

   The voltage divider circuit represented in symbolic form at 1321 serves to limit the amplitude of the input pulse in order to prevent the triggering of the conditioner at im-.

  <Desc / Clms Page number 48>

 pulses 1311 when it is not armed. The output of the 1307 one-cycle multivibrator provides one of four conditions to operate a four-layer diode 1312 oscillator which provides the true Field Control Clock signals 1403.



  The series of clock pulses 1403 therefore only last as long as the one-cycle multivibrator 1037 is on. Since this one-cycle multivibrator is activated at the end of the TF pulse and for about 17 milliseconds, it is evident that the time used to supply clock signals 1403 is not long enough to go up to to the next carriage position, which is normally reached in a minimum of 40 milliseconds on the machine being described, as this could result in the premature initiation of a control flip-flop.

   As noted previously, the operation of oscillator 1312 depends, in addition to the output from one cycle multivibrator 1307, on the presence of other levels indicating that the carriage is not running. 'be recalled to the position of the initial column of the document in preparation, neither that the carriage is spaced behind nor that the reader "is not in action II, this latter condition being ensured by the decoder level Occupied on line 1116 '. These other inputs are combined according to a 3T logic conditioning (represented by the conditioner ET 1313) with the output of the multivibrator at a cycle of activation of the field control on line 1314 to control the operation of the 'oscillator 1312.

   The -ET packaging structure is

  <Desc / Clms Page number 49>

 logic, and it is not constituted by a physical AND conditioner, as will be seen later in the description of typical circuits.



   Another timing problem relates to telling Reader 1 to action by means of the Field Control, as mentioned previously, and arises from the fact that when Reader 104 is activated, keypad encoder 101 must be locked for operation. prevent manual entries from being made while Reader 104 is controlling the system. However, (see Fig. 13) the locking means has its own delay in its operation, since it depends on the operation of an electromagnet 1320.

   As a result of this delay and the fact that a field control program hole 1304 used to activate the Lect @@ r 1 does not act until one of the keys 1322 is pressed. of the input keypad 120, there is an interval, as seen by the dotted data lines 1404-1408 in Figure 14a, during which it might be possible to press a second key (action prim- in 1404) before the keypad can be locked (action started in 1404). It is therefore necessary to have a "keypad lock" anticipation circuit in order to prevent pressing this second key by mistake.

   The look-ahead circuit includes a normally open switch 1315 operated by all character keys, and a pulse conditioner 1316 armed by a high level on a line.
1317 from an ET 1318 two-input conditioner.



  The output of conditioner 1318 is high when the

  <Desc / Clms Page number 50>

 Field Control flip-flop 911 (Fig. 9) is triggered, (the level on line 912 is therefore high) and a hole 1304 is detected by contact 1033 c in the "Reader 1 on" channel. action "of the field control band 1301.

   The voltage jump obtained at the closing of switch 1315 is differentiated by means of a circuit symbolically represented in 1326 and which gives an impulse which triggers the conditioner 1316 by making it give an output going to a multivibrator at a cycle 1319 of Field control keypad lock, the trigger of which releases a normally energized keypad release solenoid 1320 in time to prevent a second key press.



   The timing is that shown in the figure
14a, where the locking 1409 of the keyboard 120 takes place in less than 30 milliseconds and precedes the possibility of pressing a key manually, 1404, by a minimum of one millisecond in order to ensure error-free operation . This prevents erroneous 1405 outputs from typewriter encoder 101 and a TF 1406 pulse from multivibrator 113. The duration of the output from the multivibrator has a 1319 Field Control keypad lock cycle is sufficient. - its long to allow the Normal keypad lock to be effective.

   This normal operation is initiated by activating Reader 104, or in other cases, as seen in Fig. 11, where a high level output on line 1001, Reader in action " (shown in figure 10) passes through an OR 1119 conditioner to produce an unlock signal.

  <Desc / Clms Page number 51>

 Keypad stage on line 1120 by means of inverter 1121. The inverted output thus takes effect before the one-cycle multivibrator 1319 returns to its normal state, as seen in Figure 14a.



   As noted above, solenoid 1320 is referred to as a Keypad Unlock solenoid. The reason for this is that in the structure which is described the keys 1322 of the keyboard 120 are locked by a yoke 1323 urged by a spring which is disposed therein. below the ends 1324 of the key levers 1322 when the solenoid 1320 is not energized.

   The output of the multivibrator to one cycle - 1319.
Field Control Keypad and the keypad unlock signal on line 1120 therefore function to open solenoid circuit 1320 to release it and thereby allow spring 1325 to drive the caliper. 1323 in position to prevent pressing any of the 1322 ... keys. As a result,, these ... two signals are brought to the ET 1326 conditioner and both must be high for the solenoid to operate.

   If either of the signals is at a low level, the output of the conditioner AND
1326 and therefore the voltage on the input terminal of the solenoid 1320 is at a corresponding low level, and. 'the adenoid falls back, locking the keyboard 120, as described above. It follows, of course, that the entry of Commende de Champ into the conditioner.



   ET 1326 must come from the so-called multivibrator recovery side at one cycle 1319, which provides a high level output when the multivibrator is in the state.

  <Desc / Clms Page number 52>

 idle and low level output when the one-cycle multivibrator is triggered.



  TAKING A SINGLE STEP OF THE TAPE THROUGH A PUNCHING DEVICE
Another variation in the timing provided by the present invention relates to blank advance of the medium in a recording device. In the devices of the prior art, such a white advance of the medium is carried out autonomously in time and for a duration which corresponds to the duration of operation of a button or a switch controlled by hand. Advancing the middle to a single recording position is then a matter of operator skill.

   Accurate advance of a strip of perforated paper is essential in preparing a Field Control strip 1301, due to the manner in which the Field Control strip is mounted on the preferred structure (described in detail in U.S. Patent No. 3,120,301 cited above). To avoid repeating the work necessary to prepare a new tape due to operator error in the spacing of the mounting holes, it is necessary to feed the tape in one step through the cutter. punching.

   Accordingly, in accordance with one of these aspects, the present invention provides a timing means which normally provides time pulses as long as a web advance key is pressed in a punching device, but which jams. this advance after a single buffer pulse has been issued when the system is operating in a

  <Desc / Clms Page number 53>

 "Not Unique" operation. The means allowing this mode of operation are shown in Figure 11.



   In the "Single Step" mode of operation of a motor 104, the "Single Step" control key (not shown) operates a transfer switch 1122 when the key is pressed partially to a position of. In this position, the switch 1122 changes contact and applies the ground potential to a line 1123 which constitutes one of the inputs of an OR conditioner 1124. The other input of this conditioner, line 1001 'is taken from Figure 10 and is the reciprocal of the output from OR conditioner 1002. Line 1001' therefore has a high level output when none of Readers 104 are active, as can be expected. See the logic diagram in figure 40.

   Returning to FIG. 11, the "Single Step" signal passing through the OR conditioner 1124 partially arms a T conditioner 1125. The other two inputs of the .ET conditioner 1125 come from the OR conditioners 1126 and 1127, the latter crossing a network. "Delay" II 1128, resistor-capacitor circuit (comprising a capacitor in parallel with a resistor, as is well known) used for the purpose of compensating for bounce of hand-operated key contacts. The 1128 network provides a delay of about 4 ms. OR conditioner 1126 has an input from the recovery side of the one-cycle multivibrator 114 Decoder Busy, this input being high whenever the one-cycle multivibrator is in the idle state.

   It is not necessary to

  <Desc / Clms Page number 54>

 tanar counts the other input of conditioner 1126 now, as it is from a source giving a high level output when the system is not operating in the "Not Single" mode, a condition which is not not fulfilled in the case that is exposed. Regarding the OR 1127 conditioner, this conditioner has two inputs 1504 and 1130. The first of these inputs, labeled "Encoder Input", is shown in figure 13 where we see that it is simply the differentiated and inverted output. line 1501, the latter supplying a negative level "Encoder output" every time that pressing a key closes one of the switches 1502.

   The differentiation circuit is necessary because each time a key is pressed, the multivibrator 113 must emit only one pulse. The second input, line 1130, is the output from an OR conditioner 1131 having three input lines 1132, 1133, and 1134. Line 1132 has a high level output when the Single Step key closes a second one. switch 1135 when the key is pressed again while in the engaged position Closing switch 1135 connects line 1132 to ground, which applies a ground level to an ET conditioner 1125 via conditioners OR 1131 and 1127.



   By pressing a command key labeled "Advance
Punching ", a similar switch 1135 is closed in order to apply a ground level to the input line 1133 of the conditioner OR 1131. Finally, by pressing any of the control keys (indicated

  <Desc / Clms Page number 55>

 dais not shown), - we form in the same way. switches 1135 associated so as to apply a ground level to an OR conditioner 1136 which supplies one of the three inputs of an ET conditioner 1137, the other two inputs being line 1001 'coming from Reader in Action (Fig.

   10) and 'Decoder Occupies by line 1116'b. If the levels in lines 1001 'and 1116'b are both high, then ET conditioner 1137 will output high level on line 1134 whenever a command key is pressed.



   Of the three inputs of OR conditioner 1131, the first two are of interest for the present description of the "Single Pitch" mode of operation of the Reader and of the modification of the tape advance in the punching device carried out in this mode. .



  When the "Single Step" key has been brought to the ON position, the normal cycle of the Actor will stop because the high level on line 1108 is removed which results in the conditioner ET 1106 no longer applying. a high level output to the OR conditioner 1101 and therefore the multivibrator 113 is no longer in action. At the same time, as explained above, the level on line 1123 rises, which forms a high level input to the AND conditioner.
1125 via the conditioner OR 1124.

   Additionally, assuming the previous output from active drive 104 has been completed, conditioner
OR 1126 provides another high level input to the ET 1125 conditioner, because the level on the line
1116'a coming from the side normally the multi-

  <Desc / Clms Page number 56>

 vibrator at a busy decoder cycle 114 is high.



  Note that pressing the "Single Step" key also removes the high level on line 1108a which is the second input of the OR 1126 conditioner. This way, in the "step mode" Single ", ET conditioner 1125 is only armed when busy decoder cycle multivibrator 114 is in its normal state. In this regard, Figure 11 shows that a high level output from OR conditioner 1131 arms a pulse conditioner 1138 through line 1130a. The conditioner ''. Pulse 1138 is connected to the Multivibrator at a Cycle Busy Decoder 114.

   As a result, as described above, interlocking conditioner 1138 is triggered by the clock signal which appears on line 1109 at the end of the pulse / TF from multivibrator 113.



  The output controlled by the clock signal from pulse conditioner 113? in turn triggers the one-cycle multivibrator 114 and changing the state of that one-cycle multivibrator removes the high level on line 1116'a going to conditioner OR 1126 so that the TF 113 multivibrataul is taken out of service after having emitted a pulse. Because the one cycle multivibrator 114 is a monostable device, it would normally return to steady state. After a fixed time (72 milliseconds in the described embodiment), so that it is necessary to have an additional circuit to prevent this return.

   The output of the conditioner OR 1131 (through which a high level is obtained when the key is pressed.

  <Desc / Clms Page number 57>

 
 EMI57.1
 71 is "Not Unique") will claim to a conditioner OR 1139 is whose output linked to a ZT 1141 conditioner whose other input comes from the output side (normal-stop) of the one-cycle multivibrator 114. The one-cycle multivibrator is now triggered, as described above,

   the output from the OR 1131 conditioner is transmitted by an ET 1141 conditioner in order to keep the multivibrator "triggered" at a ring 114 as long as the "Pas Uniquo" key is pressed and thus prevent any further TF cycles. after the first. A voltage divider 1142 is provided between the ET 1141 conditioner and the Decoder Busy 114 cycle multivibrator to adjust the hold voltage, such that a 10 millisecond delay occurs for the multivibrator to return to cycle 114 to its normal state when the button is released.



   In the above, we have briefly described the "Single Step" operation of Reader 104. The "Punch Feed" key (not shown) also closes a similar switch 1135 on line 1133 going to the conditioner. OR there 31, previously mentioned.



  Line 1133 is in parallel with line 1132 described above, and by following, by pressing the "Punching feed" key, when the "Single Pitch" key is in the ON position, the same result is obtained. than that which is produced when the "single step" key is pressed a second time, namely that the multivibrator 113 emits one and only one TF pulse. The details of this operation will not be repeated since they are identical to those which are

  <Desc / Clms Page number 58>

 
 EMI58.1
 described for the "Pas Uniqua" key.

   On the contrary, 8i the "Single Step" key was not in the enolen- Ch \; hi1.ent position, the input of the conditioner ..: 1T 1125 coming from the conditioner OR 1126 would still be at a high level because of a high level entrance on liana 1108,
 EMI58.2
 which constitutes the level of aB'n! üê.

   The input of the conditioner ET 1125 would always also be at a high level and in this way, would be independent of the state of the multivibrator at a cycle Busy Decoder 114, In this oas, pressing the bread advance button -
 EMI58.3
 9 tonnage, one would close its associated switch 1135 in order to apply a level 41evô su :, the input 1133 of the condi- tioner ET 1125 via the conditioner OR 1127 and the delay reed 1128, as described above.
 EMI58.4
 for the "Single Step" key in Single Pue operating mode.

   The third and last high level ntr8o of the ET 1125 conditioner, that is to say the one coming from the OR 1124 conditioner would not be formed by a cleared level on line 1123 coming from the Single Step interlock switch, but by a high level on line 1001 ', a level which exists only when none of the drives are in action, as seen in figure 10 (the fact of advancing a tape while the punching device is UNDER the control of a Reader could be a source of errors, and therefore this advance is avoided),

   Because all three inputs of the ET 1125 conditioner exist continuously when pressing
 EMI58.5
 the punching key c1II1Ave.noe ", in the conditions described last, the cycles of the multivibrator

  <Desc / Clms Page number 59>

   113 are repeated and this one emits a notuberous pulse which varies according to the duration during which the key is pressed.



   UIRCUITS-TYPES
As an example of typical circuits used in the present invention, Figure 16 shows the circuits used to generate the Field Control clock signals and gives examples of a 1321 voltage divider network, pulse conditioner. his 1311, of a multivibrator 1307 of the monotable type, and of an oscillator circuit 1312 based on a diode at. four sleeps. Each of these elements has been surrounded by a dotted line and has an appropriate reference.



   Under normal conditions, the multivibrator has a cyole 1307 is at rest, 1. NPN transistor 1601 being blocked and the NPN transistor 1602 being on.



  An input line 1501 normally at high level from keypad encoder 101 (see Fig. 15) holds the cathode of diode 1603 at 12 volts, through equal resistors 1630 of pulse conditioner 1311 all. time that the anode of diode 1603, connected to the base of a normally blocked transistor 1601, is at about + 3 volts. Diode 1503 is therefore biased on blocking and because the emitter of normally blocked transistor 1601 is at ground potential, transistor 1601 remains blocked.

   When the TF 113 multivibrator is in the off state, the voltage on line 1112 connected to the anode of an isolation diode 1604 is at a low negative value of about -24 volts and consequently, of the circuit. divider the voltage 1321, whose

  <Desc / Clms Page number 60>

 resistors are chosen to maintain the voltage 1/4 on the cathode of the diode 1604 at -7 volts, the diode 1604 is normally polarized at the blocking. By pressing an alpha-numeric or "function" key (function command), a character bar or a function device is operated, in turn closing a corresponding switch 1502 (Fig.

   15) connected to a common line 1118 bearing the reference "typewriter encoder blocking". The conditions for there to be an output on line 1118 are shown in figure 11. The blocking level of the typewriter encoder on line 1118 (Fig. 11) is the output of a conditioner. OR 1119 with three entries.



  The three inputs of the OR 1119 conditioner are line 1001a drive in action, line 910 Special Skip and processor output, the latter output being at a high level whenever a processing device 107 is coupled. to print decoder 102 and began to output. High levels are found on lines 1001a and 910 if either of readers 1C4 is in action or if the special jump flip-flop 909 has been turned on to cause the reader to perform a Special Jump operation. 1.



  The OR conditioner 1119 therefore produces a high level on its output line 1118 if at least one of these three inputs is at a high level. Closing one of the switches 1502 in the typewriter encoder 101 does not then cause a change in the levels of the appropriate input lines 1503 which feed the information channels 108 in parallel.

  <Desc / Clms Page number 61>

 with the 215 read input lines, as indicated
 EMI61.1
 in figure 3.inverj32mont, if no Reader 104 is in action, and if Reader 1 is not next
 EMI61.2
 (the Special Jump mode) nor the tiaîtement device 107 according to a mode giving an output then the level on the line 1118 coming from the conditioner OR 1.119 2 $ t.

   low. Under these conditions, when the Orne key maneuver results in the closing of one of the switches 1502 of the encoder 101, the level of the output signal of the encoder.
Encoder on line 1501 becomes negative until approximately
 EMI61.3
 -15 volts for about 13 to 30 i13..secendea, (meae longer if a function action is initiated), which corresponds to the duration of closing of this switch 1502.

   This negative voltage on line 1501 then arms the conditioner. pulses 1311 (one coudi-
 EMI61.4
 Negative logic pulse actuator, as seen by the polarity of diode 1503) by decreasing the voltage at the cathode of diode 1603 to approximately 4. 12 volts.
 EMI61.5
 up to about 4 3 volte. 2n? <rôn to milliseconds after pressing the key, or flip the switch.



  1502 corresponding (see fig. 15), the multivibrator 113 is put into action (as explained previously) and
 EMI61.6
 the TF pulse on line 1112 triggers the pulse generator 1311, as follows. '. The TF pulse is.' Differentiated by '1.:; capacitor 161.9- (in series with
 EMI61.7
 a certain number of resistors in parallel) so that a positive point and a negative point are successively applied at the level of the conditioner 'has - - - armed pulses.

   Diode 1603, conduc- tion biased by the negative tip at the rear edge - -

  <Desc / Clms Page number 62>

 
 EMI62.1
 \ 1. "Aa.aon z", flat -you action the ro.ult: 1.vibrator to a 1307 field command cycle as follows:
 EMI62.2
 A sharp negative acting on the base of transistor 1601 makes it conductive, with expansion at collector 1605 then rising to about 0 volts.

   This variation
 EMI62.3
 iox1i3ive has x f, oh3, s via the capacitor% eu 1606 on the base of transistor 1602, which blocks it and keeps it blocked until the capacitor
 EMI62.4
 1606 has tunzin4 its deoh1rge and conim3noe to charge, the opposite polarity so as to apply a potential zzc: zt i; z the base of transistor 1602 to make it oon- cuotau, r again and return to its normal state the multivibrator to a 1307 cycle of activating Oa s3neie de Champ.

   When the multivibrator 1307 is activated, the level is activated.
 EMI62.5
 Cht: .mp "taken on the collector 1605 of transistor 1601 (urze diode 1 0? Hant used for isolation) rises jM3qt * 'o .. approxiantivecient 0 volts and forms one of the levels z4ii, Dnt to arm the conditioners COI11- field cznde 1305 and 1306 (see Fig. 13), previously described:,. rwsnt In addition, activating the mvltiv.brataur at a cycle 1307 activates the control oscillator
 EMI62.6
 # .. chasm 1312 and hence controls the interval during which the clock signals are produced (assuming a backspace carriage return operation does not prevent the oscillator from running, but describes me later).



   When multivibrator 1307 is in its normal state, with transistor 1602 conducting, the 0 volt level at collector 1608 of transistor 1602 is

  <Desc / Clms Page number 63>

 applied through diode 1609 and (with a potential drop) through a series resistor 1620 to terminal 1610 of a four-layered diode 1611. A voltage divider comprising two resistors 1612 neutral between a source at + 24 volts and the ground, and of which, moreover, their junction is connected to the second terminal 1613 of the diode 1611 (via another resistor in series 1626) applied - that a voltage of about 12 volts on this terminal 1613 of the diode 1611.

   A capacitor 1614, in parallel with the diode 1611, then charges at + 12 volts. A four-layer diode acts as an open switch when it is not conductive, but once its switching voltage is exceeded such a diode acts as a closed switch. The diode 1611 used in this circuit is not conductive until there is a Potential Drop of 20 volts on its terminals. In this way, the diode 1611 does not switch for the conditions stated above and remains as an open switch with the charged capacitor 1614 being unable to discharge.

   On the contrary, upon tripping of multivibrator 1307, transistor 1602 (normally conductive) turns off and the voltage on collector 1608 drops to about -16 volts. Via diode 1609, this voltage is applied to junction 1610 at the base of diode 1611 (with a potential drop across resistor 1620 as before).

  . Diode 1511 begins to conduct when a voltage of about -8 volts appears at junction 1510 circling +12 volts on the other.

  <Desc / Clms Page number 64>

 terminal 1613 of diode 1611 together with the -8 volt voltage on terminal 1610 forms the 20 volt potential difference needed to switch the diode.



  When the diode 1611 begins to become conductrica, the capacitor 1614 is discharged. Discharging continues until the potential drop across diode 1611 is about 3 volts, at which point diode 1611 ceases to be a conductor, and again begins to act as an interrupter. open. Capacitor 1614 then begins to charge again and when the potential drop across diode 1611 again reaches 20 volts, the diode becomes conductive and discharges capacitor 1614 once more. This cycle continues until Multivibrator 1307. returns to its normal state, then rising to a voltage slightly below 0 volts.

   If the Decoder Busy signal level on line 1116 rises, then diode 1609 is biased to blocking, so that when multivibrator 1307 is triggered, the voltage change at collector 1608 is not detected by. diode 1611 and hence no cycle occurs. Likewise, if either of the back spacing or carriage return switches 1617 opens, then the voltage of -24 volts is removed at the cathode of diode 1609 and the voltage of -24 volts is removed. voltage at this point rises to a value slightly less than 0 volts, which results in the fact that the diode 1609 is again biased to blocking relative to the multivibrator 1307 when the latter is triggered.



  The output of field control clock signals

  <Desc / Clms Page number 65>

 is thus prevented. The 17 volt sawtooth output from diode 1611 is coupled through capacitor 1615 to a voltage divider whose resistances are selected to set a lower limit of about - 7 volts on the output.



  Diode 1616 blocks the line at ground potential which removes the positive part of the resulting spikes and hence the field control clock signals are truncated spikes turning positive rising -7 at 0 volts, the amplitude being limited to prevent triggering the pulse conditioners 1305 and 1306 when they are not armed or when they are only partially armed.



   The AND conditioners and the OR conditioners used in these circuits are a genesis of ordinary diode conditioners. The logic AND expression conditioner (1313) used to trigger oscillator 1312, however, requires the Backspace, Carriage Return, Decoder Busy inputs, and an output from the multivibrator at one Com- Activate cycle. mende de Champ.

   The first part of the logic function of the field control clock circuit which has just been described is provided by means 1617 consisting of two switches normally closed in series, each of these switches 1617 being operated by the functions. The carriage return and spacing back of the typewriter 100 and being kept maneuvered as long as the respective carriage movement is in progress.

   The two switches thus control the application of the voltage of -24 volts on a terminal 1618 of a

  <Desc / Clms Page number 66>

   resistor which. is part of a normal conditioner OR diode- This conditioner OR has as input the re- side
 EMI66.1
 setting (collector 1608 of transistor 1602) of the ratlltivibrataur to one cycle 1307 and the trigger side of the multivibrator to a busy decoder cycle 114.

   Of this fa <; on, the structure is actually cello of an OR oon- di tiormour, but because all the inputs are inverted, we have closed the equivalent of the logical structure AND initiated. Such an equivalent structura based on inverted entras is well known in the art and was used in this system when
 EMI66.2
 was operated (presence of inverted output, etc.) in order to reduce the price.



   Circuits for transistor flip-flops,
 EMI66.3
 vs! c: ;; t-, '-dl: "8: .. the bistablea ruultivibrators (901, 904, 906, etc ...) and the piul, lui.vibretsur astablo 113 are also well known which have those of 01.1 .. 11 t: monostable lvibrat'3ur 1307 decree above. They differ only by the nature, the number and / or the positions of the circuit impedances. The inverters (315, etc ..) are simple amplifiers with a common emitter. stage whose output is obtained on the collector of the transistor, in a well-known manner.

   Intermediate amplifiers (a large number of which are used, but which are not shown on logic diagrams, since they do not perform any logic function) are simple
 EMI66.4
 Single-stage transistor rolif-cators mounted with a load circuit of the em1> "liour, except, day the amplifiers: Intermediate scanners 1202 and 606 used between the con-
 EMI66.5
 output conditioning and solemoids 401 and 301 of the

  <Desc / Clms Page number 67>

 1140. Whenever the level on line 1140 rises, transistor 721 is turned off, and the voltage on its collector, which is connected to the base of transistor 1622, becomes negative.

   The transistor 1622 which was blocked until, this pose, then deflecting conductor and
 EMI67.1
 apply the level of the mass on the 1mettenr 1623 of the normally blocked transistor 1624 of the multivibrator 113.



  Transmitter 1623 has been floating up to this point, preventing multivibrator 1113 from oscillating. The multivibrator then begins to oscillate providing TF pulses of 8 milliseconds, as can be seen, up to
 EMI67.2
 until the decw: chernt level on line 1140 becomes negative again. At this point, transistor 1621 becomes conductive to us and applies a positive voltage to the base of transistor 1622, causing it to conduct.
 EMI67.3
 blocked. The amplifier 1623 of the transistor 1624 then floats again and no more output is obtained.

   The circuit
 EMI67.4
 do trigger can also be conceived as a non-editor with two 7C'T inputs (logic up to trla: r1biftOl "L direct couples) cociprenant transistors 1622 and 1624, a negative ertrance on the basis of the transistor 1622 command- ' .- the efficiency of the input signals on the basis of the transistor 1624. Such a conditioner is represented in chapter 8 of "Digital Computer
 EMI67.5
 1-rinciples "quoted above. Lo transistor 1621 is mounted as an inverter, which is necessary to provide
 EMI67.6
 a negative input at the base of transistor 1622, when the input of base 1621 is positive, and therefore, a "True" input.



   It goes without saying that the present invention has not been

  <Desc / Clms Page number 68>

 
 EMI68.1
 punching device 105 and typewriter 100, respectively. These latter intarnbdiary amplifiers are derj amplifier circuits in to transistor comprising frets s amplification stages.



  The conformator of: s.aū 1 '; crlue 1 i 1 3 comprises a circuit de- diff; ran: L.: 1. tior. combined resistance-capacitance with an inverter, the resistance-capacitance circuit used to differentiate the leading edges kills',:; back of the pulse TFf but this j3rnièr only (, it is negative) having any effect on the reverser.

   Li output To the resJ.stanc circuit <.J-C: 01YfJ.O:!. t6 is negated V3 for en'tir0n 500 microsecond, C / '1 which d.3b!': 'lint la. : 'U;' 603 doc ir.L1; hJ .... dchrer clock nions. = Ant u: .. ves, Des v;. 'Tst ..' 4i3 ûd4iJ tU des .i14. '. LV. 4rii onncor "nan'e leur 0nc) tioL day 4'vE9 4 '" jAf3cI1'tf3 can 8trc 1jrauv: 1fJ dmH3' 'Digital r0; ti5ll ûEix' k'Z ".: 1 'i,." Jj, 7. .'1 due to the col- la'boration I rr8onnal of the Buroe rb.'Jt55. "D'rOYIt te G! 'Aw-F.ill; E" "1r 0P # 1562, ci $ lu ut in, ( i1 .. in the IfT ': "n" 1ii :. or 1 ii; r, Jai "due to the collaboration \ 1'1.'1 $ 3c cnnl dJ 1'.1 GÙ! J :;" "': Ù ..11t; 1ctt "ic Co., published by the General.: L.ctr3.c Co., 6èu. <: edition, 1962p Ohapitro 11; . or in the! lTnl'lIJ: '13 o. ' Circuit Design "Il M à. The noilabon- tien of the personvel of Texan Instruniant Co., McGra-H11 40 a. 19 (; 3, c!:.

   I.ru ;! concer: Hi 1. <J trigger <) nt of multivibrator 113,; # 1; ... oY'J; prr.Qtta! '\ t. to obtain this real: Lta, 4u comprises two inverters, not CQï: liJll ') a two-stage amplifier with a common transmitter, ccmU0 as can be seen in FIG. 16b. The t; ransi3'jor 1621 is ncx: alcUr7t conduc- teur, COmnl9 dùterGlinJ] / (: '. 1' w low level on the zou

  <Desc / Clms Page number 69>

   'described above only, for explanatory purposes,' but in no way limiting, and that we can provide it with all variations without leaving its c @ dre and, in particular, that:

  for reasons of economy, for example, the logic elements described here could be further improved by applying De Morgan's laws in many ways to reduce the number of components, although this has not been done. here to avoid complicating the explanation.

   '

  <Desc / Clms Page number 70>

   LEGEND OF THE DRAWINGS
 EMI70.1
 2 i 1-1 .r e-e, Ë 1b A Command Coder
B Control buttons
 EMI70.2
 0 Processing Kinutase 'D Logical circuit for actuating and advancing step by step of Reader 2
Logic circuit for actuation and advance step 4 steps of Reader 1 F - Logic circuit for ease of action of the typewriter encoder G Logic circuit - manual control
 EMI70.3
 flip-flops "start-stop" H Logic circuit for activating "Transfer" and "Busy decoder" I Command decoder
 EMI70.4
 1 8 lâ., Nws of codes Ii.

   8? i, "n, a code complements
L Punching Synchronized Signals Logic Circuit
M Synchronized Printing Signals Logic Circuit
N Horns 0 the use of the field command
P Control 2a Ab 115 V Alternating current 2b Channel 8
R Channel 7
S Channel 6
Channel

  <Desc / Clms Page number 71>

 
 EMI71.1
 LliG3N]) iJ]) 33 D33SI1T3 (continued)

   Reference Figures
2b U Channel 4
V Channel 3
W Channel 2 X Channel 1
Y Channel H input
Z input 'Channel 7
AA input Channel 6
AB Anal entry
AC Input Channel 4
AD Input Channel
AE entrance Camal 2
 EMI71.2
 AF 3ntrfe Car.al 3 AH 3nput axiliai of the Synchronized Signal of the Writer Decoder AI siganl Synchronized of the Decoder of the
Typewriter AJ m. tl "3rd Channel 1 AK Input Channel 3
 EMI71.3
 AL.> Tr4e OEW% AM Special Jump Stop Clock Signal,
AN Canal Exit
AO Channel 1 output
AP Channel Out- 8
AQ Channel 8 output
AR Cancel / Stop Special Jump
AS White detected
 EMI71.4
 AT Skip eciD.l,, ',,) 0:

   
4 AU Channel '1 output

  <Desc / Clms Page number 72>

 
 EMI72.1
 D L: 1D DES D..1JSSI1! S (Continued)
Reference Figures
AV Channel 8 output
AW Channel 1
AX Channel 8
6 AY Exit Treatment
AZ Clock Signal Special Jump Stop
BA Treatment Occupies
BB Reader 1
BC Reader 2
BI Reader 1 in action BJ Reader 2 swallowed step by step
BK Reader 2 in action
BL Signal Synchronized Decoder Machine
Write (Negative Level)
10 BB Reader 1 BD Reader 2
BE Jump
BF Actor 1
BG Special Jump
BH Command Code
BM Logic signal Jump
BN (Reader in action) Logic Signal Jump
BO (Reader 2) (Code Command) Logic
Skip BP (Reader in Action) (Code Command)

   
Logic Skip BQ (Reader 1) (Code Command) Logic
Jump
BR (Reader in action) (Code Command)

  <Desc / Clms Page number 73>

 
 EMI73.1
 DG.PiD.7 lâS D3SSINS (Continued) Reference Figures
10 BS Reader in action
BC Reader 2
5 BT Transfer
BU clock signals (including Stop of
Special Jump)
BV Code Reading
BVA By Reader 1
BVB By Reader 2
BW Command
BX Decoder Busy
BZ Command Code
CA Self-Printing
 EMI73.2
 CB Signal Syr.

   ironic Decoder of the typewriter
CC Reader 2
CD Player 2 Step by step
CE Reader 2 In action
CF Reader 1
CG Reader 1 Step by step
CH Reader 1 In action
CI Punching
CJ Signal Synchronized Punching CK Special Jump
CL Cancellation
CM Special Jump in action
CN Stop Special 7 CO Exit Channel 1
CP Channel 2 output

  <Desc / Clms Page number 74>

 
 EMI74.1
 to lGlN1D2 DJ:

  3 D4SSIIiS (Continued) Figures References 7 CQ Channel 1 output
OR Channel 3 output
Cs (Channel 1) (Channel 2)
 EMI74.2
 CT ('ITànar 1') ("Channel 2) CU (Channel 1) (Channel 3) (Channel 4) (Channel 5) (Channel 6) (Channel 7) CV Output Channel 2 CW Output Channel '4- CX (Channel 1) (Channel 2)
 EMI74.3
 CZ (Channel 3) (Oanâr4) (Channel '5) (Channel 6) (Channel 7) (Channel 8) DA (Channel 1) (Channel 2)
DB Channel 3 output DC Channel 4 output TITI Channel 5 output DE Channel output
DF Exit 'Channel?
DG (Channel 3) (Channel 4) (Channel (Channel 7) (Channel ($)
DH Channel 6 output DJ Channel 8 output
DE Channel 7 output
DL (Channel'2) (Channel 3)

   (Channel 4) (Channel 5) (Channel 6) (Channel 8)
IM (Channel 3) (Channel 4) (Channel 5) (Channel 7) (Channel '?)
DN Channel 5 output

  <Desc / Clms Page number 75>

   LEGEND OF THE DRAWINGS '(continued) Figures Marked
7 PD (Channel 3) (Channel 4) (Channel 5) (Channel '6) (Channel 8)
DO Channel 6 output
DQ ('Channel 3) (Channel 4) (Channel 6) (Channel 7) (Channel 8)
DR White detected
DS Stop Cancel / Special Skip
8 DT (Channel 1) (Channel 2)
DU (Channel 2)
 EMI75.1
 DV (Channel 3) (Ca .11 4) (ana "" 5) (Channel 7) (Channel 8) DW (Reader in Action) (Code Command)
 EMI75.2
 (oglqu 8âul, DX Exit Canal 6 DZ (Reader in Action) (6'diciue '". Sa:

  u) EA Channel 2 output EB Channel 1 output EC Channel 2 output ED Channel 8 output
 EMI75.3
 EF (Channel 1) (âna1 j) (Channel 4) (anaI;) (a "" n "") ('Ca'naT' "7) EG (0E517) (Channel 2) EH (Channel 3) (Channel ' "4) (? Anal" 5) ('d'ana!' 5) (Channel'7) (Channel 8) EJ (Channel 1) (Channel 2) EK (Reader in Action) (Code Command) EL (Channel 3) (Channel 4) (Channel;

  ) (Channel '7) (Channel 8)

  <Desc / Clms Page number 76>

 
 EMI76.1
 13G2NDô D ± S DRAWINGS (Continued) Reference fibers
8 EM Channel 1 output
EN (Channel 2) (Channel 3) (Channel 4) (Channel 5) (Channel 6) (Channel 8)
OE Channel 7 output
EP Channel 6 output
EQ (Channel 3) (Channel 4) (Channel 5) (Channel 6 '(Channel 8)
ER Channel 7 output
ES (Reader 2) (Code Command) (Logic
Jump)
AND (Reader '1) (Command of Coda) (Logic
Jump)
EU Punching # 0 EV Punching # 1
 EMI76.2
 3 "'1 Auto Print ..- r-3 1 EX Code Command 1 EZ Code Command -? 0
 EMI76.3
 .

   FA Auto Print ---- '"0 FB Rectifier 1 # 0
 EMI76.4
 FC Rectifier --.---- 1 FD Jump # 0
 EMI76.5
 FE Jump ### 1 FG Special Jump # 1 1
 EMI76.6
 FH Field Control --- 0 FI Field Control --- 7 1
 EMI76.7
 FJ Reader 2 --- 0 FK Reader 2 - + 1 '9 FL Reader 1

  <Desc / Clms Page number 77>

 
 EMI77.1
 L ± 0i? LiDL D23 MS31NS (Continued) Reference Figures
9 FM Special Jump
Wire Reader 2
FO Punching
FP Code Command
FQ Auto Printing
FR field commando '
FS reader 1
 EMI77.2
 FT Skip "Special FU Reader 2
 EMI77.3
 FV Punching FW ommana;

  'ao C3g
FX Self-Printing
FY Field Order 15 FZ Return Cart
GA Tab
GB Writer encoder lock
GC Input Channel 6
GD Channel 7 input
GE Input Channel 6
GF Titled Canal 5
GH input Channel 4
GI Entrance Channel 3
GJ trée Channel 2
 EMI77.4
 GK Channel input GL Encoder output (negative level) GM Encoder input
 EMI77.5
 11 GN (Block?) (Exit quickly) GO Not Single

  <Desc / Clms Page number 78>

 
 EMI78.1
 L3MND3 DES DES 3INS (Continued)

     Figures Recreate 11 GP Encoder Input
GQ Not Single Touch
GR Punching feed key
GS Reader 2 button
GT Punching key
GU Special Skip Key
GV Toucha Self-Printing
GW Code Command Key
 EMI78.2
 GX T "'' I.O ''> J9 anmrziti de Champ GY Cancel key GZ Reader key 1 HA Stop key HB Logic 'Skip
 EMI78.3
 at 'Conimande
HD Special Skip HE Exit Processing
HF Transfer
HI Decoder Busy Logic Command Jump
 EMI78.4
 1.rransfer't HJ Encoder Lockout Writer file Unlocking the HG keypad Cha- Return Duration switches
 EMI78.5
 riot / Tabulât! on / Backspace HH Duration Switches

    Unlock /
Locking
 EMI78.6
 12 ï3 'Coaë HM Command Command

  <Desc / Clms Page number 79>

 
 EMI79.1
 L, ùG11Dl: D2S DISSIXS (Continued Figures References
14 IJ Character key detector switch
IK Field Control Keypad Lockout Oscillator
IL Keypad Lock
IM Hole "Reader in Action"
IN No Hole
10 hole
IP a) MInutage of the keypad lock
Field Command - Reader in Action
IQ b) Normal Cycle of Field Control (from hole to hole shortage)
IR c) Cycle of Field Control runaway speed (from lack of hole to hole to lack of hole)
IS d) Normal Field Control Cycle (from lack of hole to hole)

   
16b IT Transfer in Action
IU Normally conductive
IV Normally blocked
IW Transfer
IX Transfer
16a IZ Field Command in Action
JA Carriage return - back spacing JB Encoder output
JD Normally blocked

  <Desc / Clms Page number 80>

 
 EMI80.1
 L.! G3NDE D: 3S DRAWINGS (continued) Figures References 13 HN Command Field .- Channel 1
HO Punching
HP Commanded from Field HQ Commanded from Champ Canal
HR. Reader 1
 EMI80.2
 'HS Spacenent rear.



   HT Return HU carriage Encoder output
HV Character key detector switch
HW Keypad Unlock
HX Field Command Keypad Lock Oscillator
HY Keypad unlocking solenid
 EMI80.3
 1.4 HZ Infonceceiit by hand of a key IA Encoder Yiachine to Write IB Transfer IC Oscillator to activate the
Field Command ID Clock Signals
Field
 EMI80.4
 12 Machine Cart a..Scribe IF Field Control Hole IG Trigger Level IH Field Control II Trigger Pulse Flip-Flop Drive 1

  <Desc / Clms Page number 81>

 
 EMI81.1
 L3 & EIID.3 DS DRAWINGS (Continued) Figure Reference 16a JE Normally Conductive JF Field Control Clock Signals

 

Claims (1)

EMI82.1 , R to s u t 1 EMI82.2 information processing system, characterized by the following points separately or in combination: 1) It includes a printing device, a recording medium on which is recorded. coded data for operating the printing device and other data for controlling the equipment, apart from the printing device, a reader for reading the recording medium, means responding to the reading of this reader by operating the printing device in a selective manner according to the control data of this device which is read on EMI82.3 the medium of the enrE: 'Manage resources used for. operating the reader to supply data to it at a rate greater than that which the printing device can accept, with means acting in response a. reading one of these coded data to delay the response of the printing device until the immediately next printing code, means acting at the time of reading any other control data to produce a signal, and means responding to that signal by immediately advancing the player to the next read position. 2) The recording medium further comprises a distinct control data, together with a first means serving in response to the detection by the reader of this distinct data to stop the response of the printing device to this character and <Desc / Clms Page number 83> document. 6) The information processing mechanism comprises a recording medium on which are recorded characters and function control data relating to the operation of corresponding mechanisms of a recording device as well as other control data not relating to the operation of this recording device, a reader for reading this recording medium, means for detecting these other control data as a single category, this means comprising a inverter for indicating the absence of detection of this other control data, a signal generator providing first clock signals at a fixed frequency; means acting in response to these first clock signals by triggering this reader to cause it to detect the data carried by the recording medium and to supply output signals corresponding thereto; a means responding to these output signals by choosing a particular circuit corresponding to the detected data, a means responding to a first clock signal by producing a control signal on this chosen circuit, an electromagnetic means responding to this signal circuit by operating the selected recording mechanism which corresponds to the detected character and the function control data; means acting in response to the presence of a first clock signal and an output from the inverter by providing a second clock signal of a duration greater than the time required to complete the inverter. operation ef- <Desc / Clms Page number 84> to the functional control data, this separate control data according to the functional control data initiating operation of the printing device of: of significant; and a second means operative in response to the detection of this distinct control data to activate the reader to cause it to detect a certain number of characters and of next function control data, while the printing device is performing his operation. 3) The recording medium is a perforated paper tape, the first means comprises a first and a second conditioning means) as well as a flip-flop, the triggered output of the flip-flop activating the device. printing through the first conditioning means to make it respond to the character and function control data detected by the reader, the flip-flop recovery output activating the reader through the media. re of the second conditioning means to make it detect the following data while the reader is in operation. 4) The printing device has a carriage and its operation includes carriage returns and storytelling. 5) The printing device has a printing means capable of moving opposite a series of printing positions of a document in preparation, the functional operation of the printing device being a movement. blank of the printing medium against a certain number of positions of this <Desc / Clms Page number 85> billed by the chosen recording mechanism; and means acting in response to this second clock signal by stopping the transmission of this control signal on this circuit. 7) An apparatus for automatically controlling a typewriter comprises an order record comprising a succession of coded records, some of these records representing various write operations, as well as other operations to be performed. by and under the commando of the typewriter, certain recordings do not result in operations carried out by the machine. writing and having to go blank without having any effect on it, the operations performed by the typewriter taking varying intervals of time to perform them; a series of control electromagnets which can be controlled in various ways to cause the typewriter to perform these operations; a signal generator for producing clock signals at a frequency which the apparatus can accept but higher than that which the typewriter can accept; means acting in response to these clock signals by reading and translating the encoded records representing these operations performed by the typewriter into output signals for variously controlling the control electromagnets as well as for reading and translating them. non-representative recordings in an output signal ls representing collectively; a means capable of acting in response to this clock signal by advancing the recording to the position of the recording. <Desc / Clms Page number 86> immediately following recording; a means serving to stop the output signals which control the operation of the typewriter and to put out of service the serving means to advance the recording for a duration greater than the period of the generator clock signals when the immediately following code record is detected as representative of operations performed by the typewriter; and means operable in response to the collective output signal to allow the reader to continue to operate automatically and regardless of the operational state of the typewriter. 8) The information processing system comprises a means for printing data on a document, which printing medium and this document can move relative to each other, and it comprises a recording drive normally. at rest used to read the input data and the control data of the system, a keyboard for the input data, a means used to lock this keyboard when the reader is in service, a control means of the field comprising a program command responding to the relative positions of the printing means and of the document and comprising, at at least one position of the field - a command putting the reader into operation, this means for controlling the field being normally inoperative, a means for making this means for controlling the field operative, a means for detecting the operation of any of the keys of the keyboard, and a means for controlling the means for controlling the field. lock the keypad immediately in response to the <Desc / Clms Page number 87> Repair of the operation of the key when the control of the field is in the position o there is this control used to activate the reader and where. the control of the field has been made operative. 9) The means which respond to the relative positions of the printing means and of the document consists of a series of first means closing a circuit; the means serving to make operative the control of the field being a bistable element, which is effective when it is in the "triggered" state, the operation of the keys acting on a second means closing a circuit; and the means for locking the lever being an electromechanical transducer which locks the keypad in response to closing the two circuits when the bictable element is in the "unlocked" state. 10) The element acting on the state of the field control is a flip-flop; the field controller comprises normally open contacts for reading a punched strip carrying a series of channels, one of these channels for controlling the efficiency of the record reader; the olavier locking means being an electromagnet responding to signals indicating that the reader has been actuated and responding to the field control means by actuating the reader; the means responding to the field command comprising a switch for detecting the operation of any of the keys of the keyboard, a monostable multivibrator, AND conditioning means for giving an output when the flip-flop of commanda of the field is triggered and the leo- command channel <Desc / Clms Page number 88> The field control paper web feeder contains a hole at the sensed field position, this hole for closing the contact means for reading the paper web, and a pulse conditioner for triggering the monostable multivibator the closing of the switch actuated by the keys; the output signal of this .ET conditioner arming the pulse conditioner; and the output of the multivibrator in turn controlling the operation of the electric keypad lock. 11) The electromagnet unlocks the keypad when energized and the output of the multivibrator controls a taansistor switch to shut off the current and de-energize the solenoid. 12) The system comprises a single set of lines of code, two readers of the encoded data recording media, each reader when activated being intended to detect codes on a respective recording medium and to giving output signals on the unique set of code lines corresponding to the detected encoded data; a number of user devices mounted in parallel on the set of lines of code, at least one of the user devices being relatively faster than the other in response to signals appearing on these lines of code; a first control means for alternately actuating each reader; a first clock means for causing an activated reader to detect any codes carried by this respective recording medium and for giving the output signals on these lines. <Desc / Clms Page number 89> ganes according to the detected code, these output signals having sufficient durations for all the devices 1.'use can respond; a second control means for independently activating one of the readers, regardless of the state of the second reader; and a second clock means responding to this second control means by causing the first reader to produce output signals of sufficient duration for the first user device to respond, but insufficient so that the other user device can respond. 13) The system comprises a typewriter comprising a cart and a keyboard containing a series of alpha-numeric keys, a field command responsive to the position of this cart by conditioning the change of state of less one of the controllers, and means for changing the state of the conditioned controller in response to the operation of any of the alpha-numeric keys. 14) The means responding to the position of the cart comprises a strip of perforated paper attached to the cart, as well as means for detecting perforations on this strip, the 'packaging means responding to the detection of a perforation on this strip. 15) The means responding to the operation of the keys comprises a serving means. providing a single pulse and the means responsive to the position of the carriage comprises a means producing a signal at the same time. 'a conditioning means armed by this signal, this conditioning means armed giving an output when <Desc / Clms Page number 90> that it is triggered by the single impulse. 16) The field control is normally at rest and the means of detecting the perforations causes a going circuit to close. a potential source, it further comprises a means providing an output signal activating this field control, the means serving to condition a control device comprising a conditioning yen AND whose circuit going to the potential source constitutes a input and whose signal activating the field control constitutes a second input, the output of this conditioner AND constituting an input of a pulse conditioner, the means responding to the operation of the alpha-numeric keys comprises means providing a minute series of input signals serving as the last control input of the pulse conditioner for changing the state of the control. 17) The system comprises an oscillator, and in addition, the pulse conditioner has a number of inputs, the timed input means comprising a means producing a single pulse responding to a signal produced by the maneuver. keys, this single pulse controlling the start and the end of the output of the oscillator and the output of the means producing this single pulse constituting an input of the pulse condi- tion. 18) The means responding to the operation of any one of the @ lpha-numeric keys comprises a switch. 19) The typewriter carriage can <Desc / Clms Page number 91> move step by step, this carriage moving slowly in one step with respect to the rate at which the keys can be operated and further comprising a first means for producing a first signal in response to the operation of any of the keys. these keys; at least one operating device serving; the output to the means producing the first signal; and a second means responding to the operation of any one of the keys by providing a second signal, this second signal being timed so as to occur after the first and after the carriage has moved substantially on this step, this means serving to build the state of the conditioned commanda device responding to the appearance of this second sj.gnal. 20) The means producing the second signal comprises means providing a single pulse, this single pulse starting in response to the end of the first signal; the means conditioning the change of state comprising a pulse conditioner armed by the output of a means producing a third signal controlled by the detection means; this armed conditioner giving an output for activating the control device when it is triggered by this single pulse. 21) The field control is normally at rest and the detecting means forms a circuit going to a potential source, the system comprising means giving an output signal serving to activate this field control, the means serving to condition the control device comprising an AND conditioner whose circuit going to the power source <Desc / Clms Page number 92> tential constitutes an input and of which the output of the means giving the signal activating the field control constitutes a second input, the pulse conditioner having as first input the output of the condition on AND, the means producing the second signal responsive to the operation of the keys further comprising means providing a timed series of input signals constituting the pulse conditioner trigger input under the control of the single pulse. 22) The pulse conditioner has as input the output of the means producing the single pulse, the timed input means comprising an oscillator, the start and end of the signal supplied by this oscillator being controlled by the output of the means producing the single impulse. 23) The information processing system comprises a first recording medium carrying a series of information elements; means for reading the first recording medium item by item automatically; and means using the output of said reading means, comprising means for re-recording at least some of the information elements on a second recording medium, and comprising in combination a controlled means. by keys used to advance the second recording medium continuously as long as this key is operated; means causing the reading means to read the first recording medium under manual control, in a single element by element mode; and a means: serving when the reading means <Desc / Clms Page number 93> operates according to this simple mode, element by element, to advance the second recording medium a sufficient distance for a single element of information, regardless of the duration of the operation of the key. 24) The recording media are constituted by strips of paper, the means for reading the first strip of paper automatically being a step-by-step paper strip reader controlled by a source of pulses at constant frequency; the means for re-registering being a paper web punching device, the key operated means for advancing the second web of paper being a key operated switch controlling the conditioning of pulses from the device. the source at a constant frequency and going to an electromagnet controlling the step-by-step advance of the paper web in the punching device, the means for reading the first strip of paper in a simple mode of operation, item by item, comprising a monostable multivibrator controlled by a pulse conditioner armed by closing a momentary contact switch and tripping by the means producing a pulse in response to the pulses from the pulse source, a first conditioning means responding in this mode of operation by stopping the operation of the pulse source, a second means of controlling conditioning responding to the operation of this momentary contact by activating the pulse source separately, and a third conditioning means responsive to the controlled state of the monostable multivibrator <Desc / Clms Page number 94> by re-establishing the second conditioning means; the Advance limiting means comprising a fourth conditioning means causing the monostable multivibrator, the first conditioning means and the second conditioning means to respond, alternately, to the switch operated by keys. 25) The information processing system includes at least two information sources; a reader for each source; a common signal to start the advance of each reader; means for using the information read by the first reader; means for transmitting the information read by the second reader, comprising a separate signal to that means of use, means for delaying transmission of the information from the second reader, and means for taking part of the user means which can act to respond to this delayed distinct signal in order to stop the advance of the second reader, using the common signal. 26) A delay means responds to this common signal by delaying the reading and transmission of the information carried out by the second reader. 27) The information sources are coded recording media, each reader comprising a series of outputs the number of which corresponds to the number of code elements, and the outputs of each reader being connected in parallel to a single set. of channels used to transmit information by means of use. 28) The system includes a means producing pulses, the common signal constituting the output <Desc / Clms Page number 95> EMI95.1 de se 80yen producing d3S pulses and being used to time the reading of information by the first reader, this means s. delay coo.prcant delay means coupled to the pulse generating means to produce separately timed pulses suitable for timing the reading of the information by the second reader. 29) The means producing pulses is constituted by an astable multivibrator, the output of which makes it possible to detect information on the encoded medium EMI95.2 d2ns one of the 7¯aators. 30) The comprises a separate means for directing information to the means of use and to the part of the means of use) EMI95.3 producing d.r ,; iUlp "1: 3. OlJ S COt: lpr '1ant moreover a li8 differentiation circuit cpl'5 ur this multivibrator in order to produce a .t: âai.w.: 7;, r ,: at the rear edge of the signal do nor - tie of r ", Ci or,) tei, r, this pulse being used to control the timing of the conditioning means of the means of use, the means of aonditionnament if by part of the means of use comprising an inverter and a pulse conditioner coupled to the output of the differentiation circuit. 31) The part of the means of use is constituted by a bistable device intended to give an output indicating its state, the advance of the second reader being jointly controlled by the output of the multiple. EMI95.4 tivibrator and by this device b.stab7.e .orst, u 'he sv finds in one of its two states. 32) The information processing system <Desc / Clms Page number 96> includes a single set of information channels; soft recording media carrying information, two readers, each reader when activated to detect the information carried by a recording medium being intended to produce output signals on this unique set of channels a series of corresponding user devices. to the information appearing on this unique set of channels, a first timing means serving to activate these readers to make them detect the information carried by the recording media and produce the output signals on these channels according to the information detected; means responsive to said first timing means for conditioning and routing the information appearing on those channels to a first user device; a second timing means for activating one of the readers to cause it to detect the information carried on the recording medium and to produce output signals for these channels according to the detected information; and means responsive to said second timing means serving to direct information appearing on these channels to a second user device. 33) Readers are non-working devices which are capable of delivering the output signals at high speed, the first user device being able to respond to these signals only at a much lower speed, the first timing means controlling these readers at a speed appropriate to that of the first user device and the second timing means controlling this first reader followed <Desc / Clms Page number 97> the high speed of which it is capable. 34) The first timing means comprises an astable ultivibrator, the output of which detects the information carried by the coded media located in the readers when one of the players is put into action, and further comprising means providing signals responding to the choice of the first user device and giving an output indicating that. this first user device is ready to accept the information, the advance of these readers being controlled jointly by the output of the multivibrator and by the means supplying signals when one of the readers is activated by the first means of timing. 35) The devices for use include a printing device comprising electromagnetic controls for selectively printing alpha-numeric characters and performing function commands, a recording device on encoded media, and respective bistable devices serving controlling the actuation of the printing device, the recording device and the readers. 36) Readers are devices that work step by step and advance step by step. middle step in each drive is controlled only by the astable miilti- vibrator. 37) The first means serving to activate each reader feel mutually exclusive, the second timing means activating the one of the two readers which is at rest to make it operate independently of the operation of the reader activated by the first means.