DE1549036A1 - Input and output device with magnetic tape for connection to a data processing system - Google Patents

Description

SOOIEIE INDUSTRIAL BULL - GEHlRAi ELECTRIC 94, avenue Öambetta,? Aris 2-VFrankreicii

Input and output device with magnetic tape for connection to a data processing system.

The invention relates to a magnetic tape recording and reproducing device having an input and output member forms that can be connected to a data processing system.

The previously used magnetic tape recorders and reproducers generally work so that the magnetic tape is at least during recording or playback continuously moved. Numerous difficulties arise as well as the need to restore the magnetic tape after playback or to stop the recording of one or more information blocks. In particular, forms der ZwisJchenrauD] between the blocks one on the Tape unused recording area.

009848 / -I 42-6

Even

Also takes place with a conventional magnetic tape recorder the utilization of the data serially for the characters and in parallel for the binary digits or bits of the coded Sign. This means that with an acEtetelligen Character code provided eight longitudinal tracks on the magnetic tape are, and obviously the same number of transducers, transmission channels, amplifiers, signal conditioners, ! Registers, etc. available. All of this leads to a certain P complexity and at a very great cost the devices,

The aim of the invention is to create an ingabe-Lind Output member based on a magnetic tape device that maintains a favorable level of performance at a low production price, based on a purely sequential or serial recycling of the .uaten, for which only one only transmission channel is required.

The invention is also intended to provide a magnetic tape recorder in which the loss of recording surface and the problems of adhering to and monitoring speed or fynehronization are eliminated. All of this follows from the fact that each Conversion operation, i.e. playback or recording, is performed while the belt is idle. The relative movement, which is always necessary, results from that the magnetic heads are mounted on a drum, ■ The carrier is constantly rotating thanks to a synchronous motor is halved, domestic needs to be involved in the conversion ssb oil Ie

000048/1426 bad original

the belt should be curved in such a way that it clings to the cylindrical iforui of the head support drum, its axis of rotation parallel to the direction of advance of the tape, -uie thereby on the IHguet layer in the drawing The tracks formed lie transversely to the longitudinal direction of the tape.

For all purposes of the invention, instead of a .j -. 'k.iraalicuen magnetic tape, a cellulose acetate carrier is used which is covered with a magnetizable oxide layer and has the same shape and dimensions as the known photographic film. For example, the ivignet film used has a width of 35 ram, and a width of 3 rows with two rows of edge perforations, lean spacing or spacing 4, (C- aim is.

! »Es-M ^ ignetf ilr." May, iewoils between two consecutive Um.vandlutLcsoprations, each with a block of information föst ^ i * young concern, a forward movement of one

ciiritt granted 'verden, that of a ferforation division corresponds, this feed can be one step

Upon command by a drive device with Qrapper to which a continuous reciprocating motion is given.

JUa it is intended to cover the costs of the associated construction to decrease, the recording density on the Cpureu des magnetic filter is possessed rather low, \ vas a fosgnetfilagerät mix results in relatively modest achievements.

009848 / U26 ^ iit

BATHROOM ORIGlNAt

The invention is also intended to provide an input and output member can be created by combining several magnetic film devices of the type set forth below called "drives" for short, and an operating control device, hereinafter called "Uniselektor" for short, is formed. This Uniselektor ensures the connection with a data processing system, which preferably also has a relatively low performance.

It should be understood that the operation of a drive is the the previously defined type is essentially cyclical The aim of the invention is to create a system which contains at least two drives with alternating operation, so that the input and output member formed thereby has a performance that is absolutely that of conventional magnetic tape drive groups is comparable, although the manufacturing price is incomparably lower *

The rotating head carrier has a known one

Construction · In the present case there is one A group of four axially staggered magnetic heads and a group of four angularly rotating cylinders staggered, axially aligned reproducing magnetic heads in the same way as the recording heads The axial offset, i.e. the axial distance

between . 009848 / U26

between two successive heads is 5/4 of the previously defined Yorschubsohritts, Dde four transverse tracks, which are formed when the heads pass over the magnetic layer, correspond to a block of information so that no recording area is lost, the usable zone obviously being limited to the width * lying ^{between the edge perforations of the I 1 UmS.}

Accordingly, according to the invention contains a> < Magnetic film device for the step-by-step feed of one with tape perforations provided film and for the evaluation of at least one Querapur for the recording of coded characters with the help of continuously rotating magnetic heads during the standstill of the pilm a rotating head carrier, the at its circumference η at equal distances from one another lying, axially offset recording heads;

and η at the same distance, axially offset playback heads, carries a cycle control shaft which is driven together with the head carrier by a common synchronous motor in such a way that the angular speed of the cycle control shaft is half as great as the angular speed of the head carrier, the head carrier and the cycle -ieuerwelle each organs aur rise in their respective * position, a '
Vorrichbung, which on a command

BATH ORIGINAL

in relation to the cycle control wave the silo by one Step feeds, pulse generators which generate display signals for the position of the heads and the cycle control shaft, and a feed control device, which can store a control signal and supply a trigger signal to the drive device, the arrangement bo it is determined that in an operation cycle corresponding to one rotation of the cycle control shaft and divided into two equal phases, a conversion operation (record or playback) in the course of one or the other Phase of a cycle can be carried out indiscriminately and then systematically a feed movement of the Film by one step, which can only be performed during the second phase of a cycle.

A further development of the invention is that at • int »input · uhd-output organization with at least two Magnetic film devices of the type defined above are one thing

) Device with an additional position indicator element,

I. and with arrangements for generating a position reference signals vers

shen is, and that the other or each

of the other magnetic film devices is assigned to a phase position monitoring arrangement and is equipped with a braking device which, under the influence of the phase position monitoring arrangement, can delay the synchronous motor, whereby it can be achieved that the second magnetic film device works in opposite phase to the first magnetic film device

odT

H ₂ 000 * 41/1431

¹ ORIGINAL BATHROOM

or, if necessary, can be brought back to anti-phase operation

The invention is described below with reference to the drawing described by way of example sarin show:

1 shows a section of the magnetic film used,

fig. 2 the chassis of a magnetic file drive after the discovery,

Yig. 3A. up to 3D KinEeld representations of a drawing -

and playback point with the rotating head carrier,

Pig. 41 to 4E coin representations of the direction,

5 shows a timing diagram for a BetrlebszykluB _t

Pig, 6A and 6B the organs and electrical circuits that BU belong to a drive, as well as in fora of a blookr circuit diagram of the organs and circuits contained in the "Uniselektor" called operating control device are,

Pig.7 a Jeitdiagramn of the most unfavorable phase position of two drives,

Fig.8 a J- -itdiagraaoi the optimal phase position of two

Recognize run,

0Q98A8 / U26 _A

Pig. 9 BATHROOM

Pig.9 a logic diagram of a clock pulse generator, which is from a "pilot drive" depends and in the Uniselektor is included,

Pig.10 a logic diagram of a brake control arrangement, which is a is assigned to the readjusted drives, and

Ji ¹ Ig. 11 is a timing diagram to explain the mode of operation of the arrangements of Pig. 9 and 10.

General

The kagnetfilragerät according to the invention finds the same Applications such as a magnetic tape drive that is conventionally used in several copies to form one to a lathe processing system connected input and output organ is used.

In the case of a physical system, the input and output elements contain a group of control circuits called the "Uniselektor" in connection with a certain number of magnetic film machines, the following for the sake of brevity "Drives" should be called. While LS is possible to use only one or two drives, it is generally advantageous to have at least three drives. Indeed, the architecture is formed in such a way that

Let him operate a maximum of 3.5 or 7 drives

009848/1426. guaranteed

guaranteed, i.e. the connection with the data processing ■ auditorium,; e as well as the selection of only one of the drives at a given time. The circuits of the Uniselectors as well as a drive, which is then the "Pilofc drive =« represents can be housed in the same cabinet. One or more cupboards take two each "NaGh-regulated" drives and their special control circuits on.

The data processing system controls the drive of a Drive by sending a special command3 signal to the uniselector, which is derived from a command accompanies 13t, which is transmitted "in parallel". An instruction keeps sicn within a nine-bit character since it made up of a function code with two bits and the grief of the drive to be used with three bits. There are four function codes, namely: recording, Play, rewind and dump, with the two the last punctures are of a purely mechanical nature.

After the Uniselektor has made sure that the drive to be used is available, it sends the data processing system a transmission request signal, and it triggers the execution of the requested function. A recording process or a repeat, The transfer process each time extends over an information block of fixed length that contains an information block

009848 / U26

BAD ORIGINAL character code

- ΐυ -

Character code groups, each of which au3 booceut nine xiits, one of which is a parity bit iac.

aii3 it is quite possible that a series of u er-vuions in a; Mngabo- and outputor ^ an only einci.jes L .ufv.erlc concerns, yet it is generally customary that at least two drives of the * η lay together for / connection with the data processing system are used. In the .ι- eiste η cases a Kaufwerk works continuously as prefer i.e. the data sampled on his j? 11m intended for transmission to the data processing system are who with it those who starve through their JcTograam Edits (comparison, bring to the last ^ tarri, Arithmetic operations, etc.). Read other run whoever it then always serves as the recipient, i.e. the data output by the data processing system to be recorded on his pila. Han can then decide that the (jeber drive preferably off the drives marked with an odd number is selected, and consequently the inoculation drive has a straight lobster. You can also choose that Pilot drive always has the highest odd Hummer, i.e. 3, 5 or 7, depending on the size of the system. This simplifies considerably the achievement of an optimal phase position with regard to an alternating cyclical operation of a odd-numbered drive and an even-numbered drive, as will be explained later.

Magnetic film

009848/1426

_; ,, BAD ORIGINAL

iis reference is made to i'jg.i. Ler! rager des ivgnetfilms 12 can, like a movie, consist of cellulose acetate or of frylar, kr is on a. .. side covered over 3 an entire width of 35 ntn with a layer of rain suitable for magnetic recording. In any case, forms of ir-gne tfilm before lichtundurcilässigo surface aussei ¹ to s Jtellen the \ oi * 3c.'iubperforationeri3 that are in two Kand- • iiiieti rait oiner ieilung P 4 '76' πππ au ^ enrdnet. •. ut 'a route which corresponds to a ΐα.ί luug i' , four Aui ^ üictitiun ^ aspuren 4 are formed. The usable length of the tracks corresponds to the distance that is available between the og id en 'orforation series. However, iole; It is divided into three zones along its length: an ounce preparation ZP and a ndsone ZT ₁ in which only lengths of covers are recorded, and a coat area in which the actual unpacking of the data takes place. This smock zone contains 10 'uf-lines, the 12 characters with V bits each - ntspreati-en. The j-end of the previous tuagssone can be easily identified during playback because the letate cell contains a binary number 1, which can be easily distinguished from the preceding HulU.en.

Mn Latenblock is puren on a group of four f recorded, the healing of which D is 3/4 of the division P

is. The four tracks of each of the first blocks are for

009 8 48/1 4 26 <ϋ £

BATH

the different blocks hatched differently. Taking into account the V _o rschubrichtung of the film which is indicated lurch the arrow 5 ', which are four of the first block üpuren entirely shown on the right, followed by the left the four tracks of the second block, etc. Since the .jpuren of the various Blocks "nested

ind, the entire available area of the magnetic layer is used, whereby the area loss occurring at the beginning . .-is negligible.

The method known as "pulse width modulation ¹¹ " is used for recording. This method is characterized by the following properties:

1.) Each boundary of a recording cell is dureti one Reversal of the direction of magnetization of the magnet realized;

ψ 2.) the recording of a binary digit 1 is expressed by a reversal of the direction of magnetization in the center of the recording cell concerned;

3.) the recording of a binary digit O is represented by the Absence of the reversal of the direction of alignment expressed in the cell in question.

This

009848 / U26 bad original

This recording method is advantageous because it allows ! Or a synchronization impulse or "lactic impulse" can be obtained by reading each cell boundary.

Iiaufwerkchaasis

Reference is made to Pig _e 2. The chassis 10 consists of a plate 11 on which several gate directions are mounted, which effect the transport of the magnetic file. The M.gnetfilm 12, the original wound on the supply reel, should gradually be shifted from left to right TO? Is wound until it finally on the ^Λ ufwickeIspule 14th Each coil can be driven by an electric motor with reversible direction of rotation, which is arranged on the rear side of the plate 11.

The magnetic film 12 must be at the recording and reproducing site 15 and walk past the feed block 16. It is controlled in the required manner with the help of two control arms held taut, each of which has a tension pulley at the end which is attached by a in the plate 11 curved slot 19 passes therethrough. Every control arm is pivotally mounted on a shaft attached to the rear of the plate; it is under the tension of a JThe aura stretching of the 3 film and depending on its angular position, Press one of several switches that control the power supply and the direction of rotation of each the r: pulp motors are used, as is known per se. Further

009848 / U26

., management role ti _gAD lGINAi

Complete guide roles, such as guide roles 20 the film guide.

Above the recording and playback point 15 is a Pressure device 21 stored. It is operated by electromechanical means so that the film is inserted into the IThe proximity of the rotating Kageet heads during recording or Y / iedergabe in a curved üora forces, and they must be performed during the feed block 16 The film's gate thrusts are automatically increased by one step,

Furthermore, a device 22 is shown which contains a photocell and is intended to check whether the film has actually been advanced one step. After all, the Öhassi3 carries a group 23 of four Push buttons for the manual control, namely: feed, rewind, Jüinzelfahrenbetrieb and disturbance.

The details of the location for recording and playback are in Fig.3A to 3i> shown, Fig.3A is an axial section, and Fig.30 corresponds to a section according to the Line C-O of Figure 3A. For the sake of brevity, they are general known fasteners, such as screws, pins, etc., only mentioned in exceptional cases. The housing 24 can through a plate 25 and the lid 26 are closed. Two film guides 27 (FIG. 3G) are attached to the cover 26 ″,

-The 009848/1426 _BAD original

Ler rotating head carriers consist of a circular one Disk 2ö, which is firmly connected to a shaft 29. This rotates in two ball bearings 30 and 31, the in one socket 32 sitaen.

The surface 23 has stepped recesses, welcue four. The magnetic heads are arranged in such a way that the axes of their pole shoes are at the same radial distance of, for example, 40 mm from the common axis .irklics.keit 44 °, 3o aso an angle of 52 ° remains between the ilopf x.1 and the head. From Iig.3I>, which shows the development of the circumference of the disk 23, it can be seen that two lying next to each other on "calibration heads" or two next to each other! iegende rfiedergabeköpfe are mutually offset by the erw'ihnte in connection with Pig.1 distance L, I / ie Kipfe ao are aligned such that the on eichnungskö'pfe ^ 1 1 to LA Tuf the iilni sequentially the four pure ι a block in ' .erlauf of a first half revolution, and that the playback heads L1 to L4 sweep the corresponding same tracks ϊχη '/ -erlauf of the second half revolution of the same revolution of the head carrier one after the other.

In line with the magnetic heads, the cover 26 carries four inner grooves, and since the radius of these grooves is somewhat larger

009848 / U26

as BAD ORIGINAL

than 40 inta exist in the axial direction in the lid four openings or ociilitze, through which the ends of the Pole shoes of the magnetic heads can pass, so that they come into contact with the magnetic film. However, you can also put a very thin foil between the lid and the film made of a non-magnetic material whose Mcke: o is sized that the distance between each head and The ier-I ^ -gnetschicht enlarged, but uniform is made, for example to 5

A pulley 33 is attached to the end of the shaft 29. On the> back of the plate 11 is an electric. -Ynchronii-otor appropriate. One end of its v.elle is provided with a liaison window, which is the same as the liaison disk 33, and with the help of a toothed belt, the xvop carrier is also at a speed of 50 revolutions per second. The spring 34 serves to compensate for any play the ball bearings 30 and 31

Doors are provided which make it possible to mark the times at which the heads pass in front of a reference position, which in the present case is the recording cell which is reserved for the signal at the end of the preparation zone. To these organs formed in carrier 3 !; made of insulating material attached to the housing 2A . This carrier is used to set two small incandescent lamps 36 and two photoresist cells Olxi and GIL, of which only the last-mentioned is visible in the section of FIG. 3'-. A position indicator disk 37 iat

00984 8 / U26

BATH ORIGINAL

egg on the left i * be the ..cheibe 28 attached liie. The position indicator disc consists of a flange and a cylindrical ring, this is raitjzv / ei borrowed. from, J-tellungsanzeigekerben in two different troubles provided Ji'ig.jjB shows the developed view of the cylindrical rim of the disc 57 »Jie notches IIII to Iu) 4 are arranged in eiuer first height so that they SiCN in the ^r plane of the i ^J hotoresistance cell CIjD are located. The notches IL1 to Ii4 are arranged at a second height 30 that they are in the plane of the photo resistor cell JIL. In each case, the transition between cover and exposure of a target is used when the rectite edge releases the associated photoresist cell once in a while. The paragraph labeled IQS (additional display position indicator) at the transition from the second to the first height of the wreath forms an additional position marking the notch 111, the hollow of this additional position marking will be recognizable later.

The distance between the position indicator notches is just like that of the heads, generally 44 ° obviously, the angularoC and ß from the angular position ■ les irügers 35 der otellungsanzeigephotozelleu and van whose angular distance from »

the end

009848/1426

BATH ORIGINAL

It can be seen from i? Ig.6A that the windings of the recording heads ώ1 to E4 are connected in series with one another and with the secondary winding of a transformer 38. l / are beti3o! the developments of the "tiedergrtekupfe Ll bia II4 unc together ^ the primary winding of a transformer rait 39 in i <switched erie. From Jj ¹ Ig. '^ A it can be seen that the magnetic core of each transformer is composed of two parts made of Ηϊ-ferrite. Jiη * inner half-core, for example the half-core 3tiA,

isb attached to the axle 29 and rotates with it. Ue carries a cylindrical winding, and the -br'ihte to connect this winding with the recording heads go through a longitudinal groove of the ü-.ibkerna and through a hole that is drilled through a collar of the axis 2y. The outer core, like the outer core 39B, is housed in a sleeve AL , so it does not rotate and contains a second cylindrical winding, the connecting wires of which are accessible so that they pass through openings in the outer core 33B, the sleeve 40 and attached to the socket. There is a very small air gap between the ends of the inner half-core and the 'iusaereu half-core, which, however, does not affect the efficiency of the transformer too much. This arrangement, which is known per se, has the great advantage that every change is made with the help of switching organs that are subject to wear.

Ü0Ö0A8 / H26

The BAD ORIGINAL

1) 1-3 pressure device. 21 (ii'ig. 3A, 30) contains an x-bel 41, which is pivotably mounted on the "without 42, which in turn is ^{gelmlton from the rr:} iger 43.Ler i'r - '^ er ' I- i:? t fastened in the back of the plate 11. -jpj ¹ udruckblock 44 i3t about axes 45, about which he: ic "'_;'. \ ^ Ukbar is fixedly connected to the lever 41, λ "ie already erv.'. 'was hat, int the inside of the Friction Block 44 so ekrümmt _(* that the IIIm a sufficient liänge a gev.olbte i? Orm is granted, Zuu lifting of the uebelfi 41 slnAüichtdirektiven Torrichtuncen provided, withBi.ieinweise an electromagnet which acts via a Vorliindungsstauge indicated at 46.

.jiuaelheiten of the Yorsehubblocks 1b sjuii in Fig.4A Aiü inclined. In Jiig.4A the prefix is: .ubbloclc in the same e-vde in x * 'ig »2 au oeheu. The thrust organs are mounted in or on a housing 47 on which there is a leak, and both parts are attached to the plate 11. The housing contains bearings in which an intermediate shaft 49 rotates. At the level of the LinLeä-ü of Pig.4B, an element 50 with screw teeth (3 ig.4-ß) is attached to the shaft 49. Line splint disk 51, which can be the same as splint disk 35 from FIG. Kit dilfe a liatine belt and another hiemeuscheibe, which is attached to the width of the shaft of the above-mentioned synchronous motor, the shaft 49 is constantly ait a ?:

l>'re :: gahl ^009848/1426 BADORIGiNAL

Driven speed of 50 revolutions per second.

A cycle control shaft 52 is rotatably mounted in two ball bearings 53 and 54 above the intermediate shaft 49 and perpendicular to its axis. A pinion 55 with helical teeth is firmly connected to the V / elle 52. Since the ratio of the number of teeth on the tickle 55 and 50 has the value 2, the cycle control shaft rotates at a speed that is half the 30th of the speed of the intermediate shaft 49, i.e. 25 revolutions per second.

A B ₁₁ ChSe with two cam disks 56 is attached to the cycle control shaft 52 in the axis of the movement path of the magnetic film 12. This bushing is provided with two paddles 57, each of which loads a cam disk of a certain I-shape. In front of the socket 56, a socket with a cam disk 58 is attached immediately next to it.

Two drive grippers 59 (3fig.4B, 4C, 4E) are provided, which via axles 60 with a double drive lever 61 are connected, which in turn is pivotable about an axis 62. A clamping double lever 63 is generally the same Shape like the double lever 61, with the exception that it is shorter than this one. The clamping double lever 63 is over an axis 64 can be swiveled, which is clamped in sockets 65 is · Each of the two side legs of levers 61 and

trä ^ t

0098A8 / U26 ■ »

carries a roller at the level of the shaft 52, as indicated at 66 for the lever 61; This roller can be formed from a riveted axle and a small ball bearing. Each of the levers 61 and 63 is provided with a rod that serves as an intermediate connecting piece and for hanging from one or two tension springs 68. It follows from this that the rollers 66 are in constant contact with the cam disks 57, so that the levers 61 and 63 are given an oscillating movement. In the position shown in FIG. 4B, the two teeth 69 forming the end of each gripper 59 are located below the I ¹ IImS 12, as can be seen in FIGS. 3 and 4E. In this position, the teeth concerned are given a horizontal back and forth movement, the amplitude of which is equal to the pitch P, but they cannot drive the PiIm.

To cause a vertical movement of the ends of the grippers 59 and consequently an advance movement of the J film in order to carry out a step, vertical adjustment devices are used controlled by a Llektromagnet. A lever arrangement contains an axle 70 which is mounted in two sockets 71 and 72. An outer lever 73 is through Soldered or welded firmly to the axle 70. Two inner levers 74 and 75 attached to a honeycomb 76 fesb are attached, are with the help of a pin 77 with the axle 70 coupled »The lever 74 has the same shape like the lever 75, but only the lever 75 carries an upper one

poor

"'009848/14 26 BADORIGiNAU

Arm 78, at the end of which a roller 79 is attached. This roller, like the rollers mentioned above, is made up of a riveted axle and a small one ball bearing formed.

The feed solenoid 80 is attached to the outside of the housing 47. When energized, it attracts an anchor plate 81. Normally, the end of this anchor plate lies in a retaining bracket formed at the end of the lever 73. Thus, the lever 73 is blocked, although it is so loaded by a spring 83 that it tries to turn clockwise.

A flat push rod 84 (SMg, 4B, 40) connects on the ground their Porm the gripper 59 with an axis 85 which is attached to the end of the levers 74 and 75. This connection will completed by a plate 86, which is made of a thin, slotted stainless steel lamella, BineGuide made of bent, thin sheet metal is used to guide the ends the gripper. The electromagnet 80 is excited exactly at the moment, in which the gripper in their extreme left dead center division. Then kick the end of the anchor plate 81 from the retaining notch 82, so that the JPader 83 the previously described lever arrangement can rotate, with the teeth 69 of the gripper being moved upwards and into two perforations on each side of the elm enter. The teeth then take the film with them to the right,

s_o • 009848 / U26 & AD original

no he that a tep I is advanced. During this time, the roller 79 rests on the cam disk, which is shaped in such a way that the lifting device never turns counterclockwise as soon as the grippers are in their right dead center position. D ± ea causes, on the one hand, the teeth 69 to emerge from the perforations of the j'iltns, and, on the other hand, the anchor plate 81 of the Llektromagnets 8Ü, which at this point in time nithi more

rregt int, is tensioned again. The grippers 5 ^{ J for their backward movement from right to left in their deep division autf.

Each of the movements of a system contains position display elements for displaying the division of its cycle control shaft. The iSyklos control shaft 52 (FIGS. 4E, 4A) carries a precaub disk 8ϋ at the end protruding from the housing. jüicse consists of a thin, on a hub fastened ilansch whose cylindrical crane is cut so that a verae-uinkelungaabschnitt 89 persists, lfieser section is a photoresistor cell OA (V _o rschubzelle) darken, which is fixed in the insulating support 91), and For each revolution of the disc, which corresponds to one cycle, for a quarter of a revolution, the rest of the revolution the photoresistive cell can be illuminated by a light bulb 91 which is fixed in the support 90 outside the thrust disc.

In 0098 4 8/14 2 6 BAD ORIGINAL

There is only one single pilot drive in each system. Only on this pilot drive: the end of the cycle control shaft 52 carries an additional disk 92 (timer disk) to which a Paotowiderstauds cell CH (timer cell) and another Glühlätnpoheti are assigned, which are not shown, but for which the carrier 90 is also suitable «The disk 92 is constructed in the same way as the disc, but its wreath has two darkening sections,. each arranged in such a way that they intercept the light in accordance with an angle of 90 +2} f , the angle Ϋ being related to the function of monitoring the phase position, as will be explained later.

The xiagratnGie of Pig. 5 show how the a ecL is cn. s organs are set the jmwandlungsstelle 15 and the pre-Ca abblocke 16 in .bo each defined by the Zvklussteuerwelle 52 cycle with a duration of 40 ms. One canoe each cycle in a first and a Pnase 5weite phase (V _o rschub-) phase) is divided, each phase has a ojauer 2D ms corresponding to one revolution of the Mahnetköpftrigers. M- ^ n then recognizes in the line GLw groups of four impulses, which are available at the output afaes Impulsformisr-Teretarkers /, which is connected to the photoresistor CIE (recording position display cell) «Likewise one recognizes in the line QIIt groups το η five impulses, which are available at the output of a pulse fora # v amplifier, which is connected to the photoresistorsez # lle OIL (playback position indicator cell).

the 009848 / U26 BAD orjgInal

lines E1-E4 can be seen in the course of the first half each phase the periods in which signals can be supplied to the recording heads E1 to E4, so that the data of one block of information is recorded on four tracks of the magnetic film. In the Lines I1-L4 can be seen in the course of the other half each phase the periods in which the playback heads L1 to L4 can deliver Abijaetsignale that one Correspond to information block.

With regard to the film feed members, the curve denoted by the levels PED, PEG relates to the horizontal movements of the teeth of the grippers 59 _r which are forced by the cam disks 57. Between the times tO and t1O of the first phase, the grippers are immovable in the extreme right position (PED). Between time t10 and time to of the second phase, the grippers are moved to the left. Between the times to and t1O of the second phase, the grippers are immovable in the extreme left position (PEG). Finally, the grippers are moved to the right between time t1O and time to of the next cycle.

The curve denoted rait PH, PB relates to the vertical movements of the teeth of the grippers 59. If a feed movement is to be carried out by one step, the electromagnet 80 is excited from the time t0 to the time t1ü of the second phase. A _u f due to the electric and

009848/1426 BAD original

meohanisohen

The vertical movement of the teeth of the gripper finds mechanical delays a little later, for example between times t3 and t7 »then the teeth of the grippers are inserted into the perforations of the belt. The ^{curve labeled I 1} IIiM shows that the advancing movement of the film takes place by one step between time t10 of the second phase and time to of the next cycle. Between the point in time to and the point in time t5 of this cycle, the cam disk 58 causes the teeth of the grippers to be withdrawn.

From curve 21 it can be seen that the pressure element 21 is raised between times t5 and t1O of the second phase, and that the pressure element returns to the lower position between time t15 and time to of the next cycle. Ilen at the points indicated by OA, GH, OVA Z _e is Lignale that are available at the outputs of pulse shaper amplifiers, which are each connected to a photo-resistor cell. Thus, the _o rschubzelle CA glieferte pulse from the time to to the time T 1 o the second phase of the V takes; this pulse is on each drive of the A _n position verfügbar.Dagegen the timer cell OH delivers exclusively with the .PiIoblaufwerk two equidistantly disposed pulses per cycle The second pulse of the cell TRJ is, for example centrally to the pulse of the cell CiA, but it has a slightly larger length, which corresponds to an angle of 90 ° plus two I-ial detu angular, whereby the angle can be about 4 to 5 °. BATH ORIGINAL

The feed control arrangement tiag 22 vot? FIG · 2 includes a photoresistor ropes and a Crltihläopchen that are on one and the other .'reite of the film in line with one of the film Perforationereihen arranged DiePhotowiderstandssselle is disposed _00} that tweak two Perforat is, when the film is in the normal position. ms light of the light bulb is therefore intercepted by deu film, so that the photoresist cell is only illuminated during the time in which a perforation passes it.

In the line G? A of Fig * 5, the signal ^ is set, the is delivered by the GVA delivery control cell; this irapule arises between times t12 to t18 The second phase, if as a result of a failure of the V rstroborgane the iilm is not moved, is missing open - . <ichtl.on this impulse. If on the other hand the film is incompletely advanced so that the photoresist cell OVA remains illuminated, that of this cell remains signal delivered after time t18 on the high waiting instead of it being back on the low value going back. ! «Lan thus has a smock to control, whether a !!! (! feed movement has been carried out correctly during a second phase of a cycle, if this Movement has been ordered 1st *

To 009848/1426

BATH ORIGINAL

With reference to Eig.GA and 6B, which along the line X-X Are to be added together, the principle diagram of the Circuits and electrical elements explained in an input and output element according to the invention are included. Fig.oB refers to the "Uniselektor" ^ called B.jtriebssteuergerät, while Eig, 6A in the first place Line shows the circuits and electrical organs which form part of a drive or a Directly mapped to the drive.

In Ji ¹ Ig.6A the electrical organs, the magnitude of which influences mechanical organs or depends on mechanical organs, are shown to the right of the vertical line ZZ. The electrical control arrangements belonging to one of the drives, which are housed together with the drive in the same cabinet, are shown between the vertical lines YY and ZZ. Finally, between the lines XX and YY, a group of selector circuits is shown in a pike, which in reality belongs to the uniselector.

To the right of the line Z-Z can be seen: Lie feed contο11-zelle GVA, the four playback heads L1 to L4 and the transformer 39 »the recording display cell CU, the feed cell YES, the feed solenoid 80, the

four

009848 / U26

BATH ORIGINAL

four recording heads £ 11 to E4 and the '.Transformer 38, the playback display cell OIL and the Zefctgeberaelle Oh, which, as you can remember, only on the pilot drive is available.

an organ that has not yet been mentioned is also shown, namely a brake solenoid 94 'which can actuate a brake 95. This brake is at one end of the shaft of the aforementioned synchronous motor attached to each drive, with the exception of the pilot drive, its Engine is never braked. The purpose of the brake is to establish a certain phase relationship between either dew Pilot drive and a post-gelled drive with even-numbered Hummer or between two subsequent drives, one of which is an even-numbered Hummer and the other have an odd number, achieve su initially or restore later.

The particularly provided for each drive assemblies include a V _o rschubsteueranordnung 96, a fault detector assembly 97 and a brake control arrangement 98, the arrangement latter, of course, is absent in the pilot drive.

In "the uniselector (FIG. 6B) there is a buffer register 99 provided, to which a character counter 100 and a word counter 101 are assigned. The buffer register 99 consists of one

Verso shift register

009848/142 6

BATH ORIGINAL

- 3ü - ·

Overlay register, which the I "-rien-parallel conversion in the transmission of a Z iicheus aur data processing system or the parallel-Sarien-Urasosition in the transmission of a character from the data processing system by.fun.ren -3 011. This Yersehieberegiater has a capacity of only one character mainly for reasons of saving material, but it could also be provided with a larger capacity. In a practical exemplary embodiment it has ten levels, namely nine levels, which correspond to the nine bits of a ™ character and one in addition When entering a character, a marking number "1" is recorded in the first level, and when removing this marking number "1" must be stored in the tenth ... level after nine consecutive shifts, from which the transmission of the Character in the register; this corresponds to a count of Bit3 of each character.

k Every time 12 characters have been transferred to the buffer register J> j , the counter 100 supplies a final word signal from the counter 101. The expression "tfort" is selected here for 12 characters according to the recording capacity of one of the four magnetic tracks for each information block, but it is obvious that the real data words by no means necessarily consist of 12 characters. When the counter 101 has intercepted four word termination signals, it emits a block termination signal at its output, which indicates that four words have passed through the register 99 .

009848/1426

BATH ORIGINAL

The input of the stages of the controller 9-j can sequentially receive data via the cannula 102 which originate from the atral unit 105 of the data processing system. The outputs of the; tufeu of the register 99 can, via the cannula 104 on the central unit, sequentially deliver the characters which form an information block scanned on one of the drives. Before each transmission, '".: Vi ^ entrilwerk delivers a Befetil over the l ^ nale 102 and at the same time over the K / uial 101; a command display ;; c3igual SII, read a Vernogerun ₍ i3eleo) ent 1OG and eiuer syuiboliscti at 1J7 From these Uni circuits, the command can then be stored in the command register 108, which consists of five; tufeu.

Each B, fetil consists of a Laufwerk.nuiatnerncode with rei ^Bin: irstelleu and make a funct ions code with two Eiuär-. The two functions or operations that should be explained in detail are the "Playback" function and the "Record" function.

j-> The outputs from three levels of register 108 are like this connected to a decoding arrangement 1Ö9 supply the number code of the drive to be used, ide outputs of the two other stages of register 108 are old two inputs of each of the logic circuits and 111 connected. Each of these logic circuits is

009848 / U26 ^

BATH

designed to decode the code combination which represents the function to be performed. The "recording" function is coded by the logic circuit 110, and the "playback" function by the logic circuit 111.

iAirch a single connection i3t that of the decoding arrangement 109 (Fig. 6B) to the dial circuit group (Pig.6A) the control exercised is shown. This selector switch ungsgruppe ensures the connections between α em Uniselektor and the circuits and electrical Organ of the drive to be used, the number of which is given by the command stored in register 108 is.

The signal from the feed cell OA (FIG. 6A) is fed to the feed control arrangement 96 so that, if it has received a feed command, it delivers a flow pulse of the same duration to the feed electromagnet 80. The feed control device "96 is a us s ground to the input of Stürungsdetektoranordnung 97 Connected to this

in to provide a signal indicating that either a feed command has been received or that it has just been received a feed movement is carried out. i »Ie arrangement consists of a group of logical connections, which are designed so that they supply a signal at output that indicates whether the drive is available nder not.

0098A8 / U26 BAD ORIGINAL Va

Since the arrangement 96 in particular also receives the signal originating from the cell OVA, the arrangement 97 can emit a signal that the drive is unavailable if a film advance movement has not been carried out correctly. The arrangement 97 has further entrances, with the aid of which various types of incidents, apart from an incident during the advance, can be ascertained. For example, d _a 'S signal can for the unavailability of the period are submitted wähend, in which the motor of a drive is brought into phase, or even when the engine is engaged in a rewind or even in case of defective operation of the Filmandruckvorrichtung etc.

The signals of the arrangement 97 are over the connections 114A, 114B (Fig. 6A, 6B) of a command confirmation arrangement This receives the aforementioned command indication signal with a delay ranging from 60 to 120 microseconds and is caused by the delay element 106. The output of the arrangement 115 is with a third input of each of the logic circuits 110 and 111 connected.

The arrangement 115 also receives at an input rl so-called "laktimpitlse" supplied from a clock pulse genera bor I 12, this operates aaton "ai, αοlange no recovery operation Gabs led wLrdj oil ¹ enthUlt ο Inen

009848 / U26 i-Ak? ^,

Pilot oscillator with a precisely defined frequency, for example 153.3 kHz, as well as frequency divider and timing circuits that are designed in such a way that the generator ■? emits a first pulse train B.1, the frequency of which is 66.67 kHz, whereby a bit period with a duration of 15 ns is determined. A second pulse train R2 is available at a second output. These have the same frequency, but they are offset by half a bit period against 'the pulses ii.1 ψ , these pulses are used to synchronize the

Establishments of most of the arrangements shown, albeit * the connections required for this in the principle diagram are not shown,

So if the selected drive is available, returns the output of the error confirmation arrangement 115 an opening voltage to the logic circuits 11C and 111, IBU denotes the opening voltage, which on The output of the logic circuit 110 appears during the whole time necessary to carry out a recording operation necessary is; this opening voltage indicates that the recording command is usable. With ILU becomes denotes the opening voltage which appears at the output of the logic circuit 111 and indicates that the playback command is usable.

Of the

fl C) ^r )> H 8 / H 2 υ BAD ORIGINAL

~ ³⁵ ~

The Uniselector receives the commands from the computer system at any point in time during the cyclic drive of the drives. If a playback request has been stored in the register, it can only then be executed during the second half of the first or the second phase of a cycle if it has been previously permitted. Fig. 5 shows that for this purpose the impulses of the recording position display cable CIE have to be used. From Fig. 64 and then from S ¹ Ig, Connections 116A, 116B to the calibration position display register 117 is connected. Ir'eses register controls an input of an Undocualtun: 120, the other input of which receives the aforementioned signal ILU. The output of the And-So hold 120 iterates an input of the reproduction permission register 119 via the OR circuit 118. On the other hand, the reproduction permission register 119 receives together the word end signal and the block end signal, which are emitted by the counter 100 and the counter 101, respectively. The register 113 can supply a reproduction permission voltage AL to an input of an AND circuit 121. The arrangement is such that a temporal condition for the execution of the lunktton during one of the phases is that the. ignal ILU appears in front of one of the Iapulse Cliä, and awar appears in any case before the fourth pulse of a group; otherwise, the £ _u uction is only in the next

phase 0Ö9Ö /, 8 / U26

D ORIGJNAt

Phase executed.

The secondary winding of the transformer 39 in the selected one Drive is connected via connections 122Λ, 122B to a circuit group 123, the "playback evaluation channel" is called, and in a known way from a preamplifier, an amplifier, a Cu wave detector circuit as well as logic circuits in connection with a time base exist so that they output signals provides, which distinguishes the B} digit digits 1 and O in the characters scanned on the magnetic film. This output is with another input of the AND circuit 121 connected, the output of which is connected to an input of the first stage of the buffer register 99.

When the first playback head arrives before the first track, it first scans the preparation zone, which zeros contains. From this moment on, the playback evaluation channel 123 acts via the connection shown in dashed lines 124 to the clock pulse generator 112 in such a way that it is no longer autonomous, but is synchronized by the playback signals will. This is done by disconnecting the aforementioned pilot oscillator, and that each time a clock pulse Ii 1 is generated when

is placed in the boundary of a / on drawing cell indicating transition / est. The clock pulses K2 are also emitted, but their time offset is reduced to a delay of 5 »5 US compared to the clock pulses R1 . 009848/1426

BAD ORIGINAL _Like

As indicated earlier, the scan is expressed the first to mark the end of the preparation zone Digit "1" by entering a marker "1" in the first stage of the buffer register 99, whereby the beginning of the actual scan, marked by a word will. Signals emitted by the cell OIL also control the supply of displacement pulses to the Buffer registers 99.

An output of the tenth stage of the buffer register 99 is via connection 125 to an input of an arrangement called "broadcast call generator". Another input of this arrangement is connected to the output of the character counter 100 via the connection 127A, 127B.

If the first character is completely in the buffer register has been entered, the arrival of the marking number calls "1" in the tenth stage, produces a pulse which is applied to the arrangement 126. Since the word final signal is not present at that moment, the device 126 emits a pulse DTK, which the character transfer call means and is transmitted to the central work 103. This controls the transmission of the stored character to a Buffer memory, which takes place very quickly via the channels 104, and immediately afterwards it sends a signal TKE (Character transfer carried out) to the arrangement 126, daraib

this BAD ORlQlNAl.

009848/1426

this is authorized to send the next transmission call impulse to go off.

The following characters of the first word are reproduced in the same way. The playback signals will be from the time in whichu the first. playback head leaves the first track of the block until the point in time at which the second Playhead arrives at the beginning of the second track. The sampling of the second word begins, and it is it is clear that the third word and the fourth word of an information block then follow in the same way are scanned.

It can be seen from J? Ig.6B that the output of the word counter 101 is connected to an input of an AND circuit 128, the other input of which receives the signal ILU etq emitted by the logic circuit 111. The output of the AND circuit 128 can be connected via connections 129A, 129B to the feed expensive arrangement 96 (6A) of the selected drive. When the last character of the fourth word of a scanned block has been entered into the buffer register 99, the word counter 101 emits a block end pulse which represents a feed command when it is transmitted via the AND circuit 128.

The end,

009,848 / 1 / .26 _BAD ohiginm.

US foregoing, it will be understood that the arrangement can cause the excitation of the Vor3chubelektromagnets 80 after ίpeieherung this Vor3ciiubbefehls once aie a signal output by the feeding cell OA has received ignal I, Further iet to vefstehen that the advance of one step i'ilnia If the reproduction has been carried out during the second half of the first phase (Fig. 5), it will be carried out during the second phase of the same cycle. If, on the other hand, playback has been carried out in the course of the second half of the second phase of a cycle, the film can only be advanced by one step in the second phase of the next cycle

earth. Jas be reminded that during this apauue confirmation of a new command concerning the drive in question is prohibited.

The / uagaug of the logic circuit 110 is connected to an input of the AND circuit 130. The other input of these AND üchaltung is controlled vou the itfiedergabestellungsansei {* eregister 131, da3 _f 132B can receive the output from the Wiedergabestellungsanzeigeeelle CLX ti pulses through the connections 132nd Register 131 is analogous to register 117 in all respects. The output of the AND circuit 130 is marked with deu. Input of recording permission register 133 which is analogous to register 119. The output of register 133 controls one

entry

009848 / U26

; ι; BATH ORIGINAL

Input of a group of recording power amplifiers 134. These amplifiers can have connections 135A, 135B and the transformer 56 supplies a recording current in one direction or in the opposite direction the ^ ufzeiohnungskupfen El to E4 deliver.

Sin input of an arrangement called "digital modulator" 136 'is via connection 137 to an output of the tenth Stage of the buffer register 99 connected. Another entrance of digital modulator 136 is via connections 127A and 1270 connected to the output of the counter 100. The output of the digital modulator 136 controls an input of the amplifier group 134.

As soon as a function "recording" and a certain The command relating to the drive has been stored in the command register 108, the signal IEU is output of logic circuit 110, provided that drive is available. If in register 108 A recording command has been saved, it can During the first half of the first or the second phase, a cycle can only be executed if it was previously .u ^ elaseen has been. From Figure 5 it can be seen that to for this purpose the pulses of the display position display cell OIL must be used. If only the four notches IL1 to IL4 (Fig.3A, 3B) would be used, the command must have arrived at least before the impulse resulting from the fourth inheritance H4. To not a time of

009848/1428 the

BAD ORlGJNAL

the duration of a phase is used with ILS designated paragraph for the generation of a fifth pulse OIL a little before the end of each phase, whereby the period of time for taking the recording command into account is increased.

If the signal IEU is also present, the AND circuit 130 permeable * as soon as one of the five impulses CIL is recorded in the playback position display register 131, and the recording permission register 133 provides an opening voltage to the recording amplifiers 134.

The digital modulator 136 consists essentially of. a bistable multivibrator, which is assigned to logic circuits which connect their two inputs and their two outputs to one another in a manner known per se and also receive the clock pulses R1 and R2. The arrangement is such that each clock pulse RI causes a change of state of the flip-flop circuit, and if a binary digit "1" emerges from the buffer register 99, a change of state is also generated by a pulse R2 in the middle of each bit period, the duration of which is 15 jis. The control signals transmitted from the devices 133 and 136 to the amplifiers 134 are such that the recording heads are constantly supplied with a current which is reversed with every recording period as long as no playback operation is carried out, as well as when the recording is in progress oh tiling, if the Dlgibalmodulnbor ■ 136 koine aufauaeiGhnerKlon Ziff-sim ¹¹ I "Btijoiiiliut become ;,

i ti 4 «/ 'I'»! < BATH ORIGINAL

This will record the prep zone and end zone zeros at the beginning and end of each track.

Control connections, which are not shown for the sake of simplicity, cause the a immediately after the storage of the first pulse GIE in the record position display register 117 practically simultaneously the deletion of the counters 100 and 101 as well as the buffer register 99 and the transfer of the first character to be recorded originating from the central plant are triggered in this buffer register. then the register 117 acts on the digital modulator 156 in such a way that it records a digit "1" which indicates the end of the preparation zone. The next bit period becomes a tick digit "1" is entered into the first stage of the buffer register 99 while the generator 126 outputs a pulse which calls for the transmission of the second character. Since shift pulses are triggered and the buffer registers 99 have been supplied, the binary digits of the first character appear at its output to the digital modulator 136 so that it causes them to be recorded on the magnetic film.

The transition of the mark point ¹ M "in the tenth öfcufe of Pufferregloters calls the increase in the luhalts the character counter IOD forth. The successive 2'e lohen doa & ERNT n MOVBU been in ¹ du same r / oise

uu LVv- · <·. « a iwithout .fc τ.

«• Κ, * ·» .. ··· »fc * ü L JIJl J Il Il. I ΙΙ.Γ I! Γ 1 -

BATH ORIGINAL

recorded, as well as the signs of the “wide, third and fourth word of an info rotation block.

As the characters and the words are used during this process have been counted by the counters 100 and 101, these supply a block bottom signal to the playback permit register 119. Each recording of a block is followed by ' namely a systematic scan of the same block so that it is checked whether there is no error in the recording originated. This review basically exists in a calculation of the parity key for each Characters of the block.

A group of logical circuits 138, called "PrUfwiedergabesteueranordnung ** is from the A _u sgang the logic circuit 110 and from the Befehlsbestätigungs-

Order 115 controlled simultaneously. The output of the Arrangement 130 is connected to the second input of the OR circuit 118, so that it emits an opening voltage in such a way that the block closure signal in the present case is sufficient to set the playback approval register 119 into operation.

At the desired moment, the test playback of the Blocks performed in the same way as a normal playback operation, with the only difference that that due to special measures the generator 126 during this operation not for the delivery of transmission

BATH ORIGINAL

aufrufimpulseη is authorized. How easy to understand returns after the last character of the blocks of word counters 101 checked again from a block closing pulse which, as previously stated, becomes a Voi'schubbefehl when it is out of the AND circuit ai3 occurs.

ϊ / enn die '. recording operation in the course of a first i * hase been carried out, the feed movement of one step in the course of the second phase carried out on the same cycle. On the other hand, the recording operation has been executed in the course of a second phase of a cycle, the feed movement takes place ctes film took place by one step only in the second phase of the next cycle, and almost during the entire cycle During this cycle, no command relating to the same drive can be confirmed.

The design of the arrangements explained above can vary depending on the technology selected. You can do this. Realize northings, for example, by logical neither-nor-circuits (Nüit-üchaltungen) in connection with bistable Jc.-altun ^ s with two inputs and zv.oi outputs, each input of a flip-flop can be controlled by one or more "edge condition circuits" to whom a jump in savings flowed to a first entrance only occurs at the exit if the second

009848/1420

BATH ORIGINAL

Input an opening voltage a sufficient time earlier Furthermore, the amplifiers are generally polarity reversing amplifiers. The advantage of this As is well known, i'echnology consists in the fact that the front edge and the rear edge of a square pulse3 can be exploited.

Thus, the feed control arrangement 96 (Pig.6A) consists of a first trigger circuit and a second trigger circuit in connection with several Weder-Foch circuits. If the logic circuit 128 emits a pulse with a duration of 15 jus, this brings the first flip-flop to the state "1" when the end of the reproduction of an information block is determined. In the following second phase (advance phase) brings a .. ·. . Pulse that has been derived from the I _ra pulse emitted by the feed cell OA, the second flip-flop to the state "1.". This then controls a power amplifier which energizes the feed solenoid 80, which results in a feed of the film by one step.

If this step has been carried out correctly, the trailing edge will have one from the feed control cell GVA given pulse the effect that the two flip-flops can be reset to the "0" state.

if

If the film is not at all or only incomplete has been advanced, the trailing edge of the mentioned pulse is missing, and the two flip-flops remain at the end of a second phase in the "1" state, this last one State is determined by a logic circuit, which controls a third flip-flop, which at the leading edge of the cell OA on the Baginn of the second Phase of the next cycle delivered pulse in the. State "1" goes. This third toggle switch has the Task, the fault detector arrangement 97 and a signaling device for a feed fault actuate.

S3 is also to be noted that each of the arrangements 115, 117, 119, 131, 133 also consist of two flip-flops in connection with Weder-IToch circuits. Each of these arrangements is designed so that the first flip-flop must be previously left in the state "1" so that the second f-flop may also go ^1M in the ^M state, Further, the first KippsclaLtung can only ⁿ in the state "1 go if the two flip-flops have previously been reset to the "0" state.

A special feature of the command confirmation arrangement 115, however, is that only the first flip-flop is reset to the state "0" when a recording command has just been executed. The state "0" of the first flip-flop, the "1" state of the second

14 2ß toggle switch

BATH ORIGINAL

Flip-flop and the presence of the signal IEU ata ioutput of the logical retention 110 are the logical ones Conditions that enable the arrangement 138 to achieve the trigger the mentioned test playback operation.

Including the mechanical organs of each drive from one own synchronous motor are driven, the cycle has the drives, which is one revolution of the cycle control shaft corresponds to an equal duration of 40 ms if the ■ The frequency of the AC net current was 50 IiE.

i »· * when starting up the system, a hot or of a Kaufwerk fcicu in Bo..u £, on the Kotor of another drive _f ; leictipha3i _£ ; or mutually adjust, as well as

Further on millennium round of the Kitsein between the Zv.iaehenwellö uni the "yklussteuerwelle conducted Ünteraetcutib consist movie running plants four raoglicae Phasenbesiehungeti between two magnetic when no beaotneren kassuahmen be taken bo künneaawei drives in phase be a phase shift of a U quarter cycle advance or have a lag, or finally be out of phase, with the last division forming the optimal phase relationship.

00984 8 / U 2 6 BAD ORIGINAL

First of all, the operation of iron two 'drives for the Pail should be examined using Pig.7 to show that a drive with an even-numbered Hummer has a lead by a quarter of a cycle, i.e. by half a phase, compared to a drive with an odd-numbered Hummer. The limits of the cycles of the even-numbered drive are denoted with ti, t3, t5 ... and those of the even-numbered drive with t2, t4t t6. ··. The pike corners drawn with thin lines correspond to periods when operations are possible but not actually carried out. When a . If the operation is actually carried out, its duration is shown by a black rectangle. On each of the lines designated by the JII Bifehlsanzeigesingale are given that are er.ipfangen of the Uniselektor in spätesten times in which each command can be confirmed. On the line labeled UG, the periods are shown hatched, in the course of which the data scanned by an uneven-numbered drive can be processed by the data processing system and on the other hand, the transmissions of an information block intended for an even-numbered drive from the data processing system to the university selector. On the one with LlIs

designatedü

009848/1428

BATH ORIGINAL

The designated lines indicate the periods during which the university selector's selection circuits are occupied with it are either the odd-numbered drive or select the even-numbered drive.

In the course of the first cycle shown t1-t3 follows

uf the transmission of a first information block to the data processing system, a step feed of the 3? ilms on the odd-numbered drive (line "VOiiSOH".). The same applies in the course of the second cycle t3-t5 for a second information block, during the cycle relating to the even-numbered drive t4-t6, the first information block, which may or may not have been changed by the processing carried out in the data processing system, is transmitted and recorded on the film of the even-numbered drive (line ¹¹ AUiPZ. ¹¹ ). After reviewing this first block of information (dashed line), the I-film on the second drive is incremented during the second phase of cycle t4-t6. Because of the assignment of the selector circuits of the uni selector, the third playback command can only be confirmed during the second phase of cycle t5-t7. The real step feed of the film on the odd-numbered drive is only performed during the second phase of cycle t7-t9. The operation in the following cycles is easy to understand.

dare

009648/142 (5 _BAD original "

Because of the dead times, each drive pair is concerned Average amount of information 1.333 information sheets per Cycle, the equal amount of riforastion that the Wftgütis tigs th Case is obtained when the even-numbered Drive lags odd-numbered drive by a quarter of a cycle. When the two drives work in phase is the average amount of information slightly better, since it covers 1.5 blocks of information increased per cycle. The mean information age is only optimal if the two drives are set "against phase" are. The average amount of information then increases to two information blocks kB per cycle, as can be checked with the aid of the diagrams in Fig. 8. This phase relationship is characterized by the fact that the first year of an odd-numbered drive A corresponds to the second phase of the even-numbered drive, and vice versa.

Thus, during the first phase of cycle t1-t3, the odd-numbered drive while an information block with the number η is transmitted to the data processing system, a gate push movement on the even-numbered drive executed. In the run-up to the second phase of the cycle t1-t3 of the odd-numbered drive, this carries out a feed movement while an information block with the number n-1 is transferred from the data processing system to the uniselector so that it is on the film of the even-numbered drive

0Q9846 / U26 recorded

BATH ORIGINAL

It can be seen that playback on the odd-numbered drive and recording on German-numbered drives are always in the lead-up to the first phase of their. respective Zykleti are carried out. It should be noted that the optimal smell operation of the two drives is made possible by the fact that the iiauer of the bezmii, the dialing of the uni-selector are only slightly larger than half a hare during playback and slightly smaller than. One phase during the " In the case of optimal alternating operation, data processing has a period of 17 tns for processing information blocks.

Jis should now explain the very simple hatred would take η with which the phase position of av.ei drives is monitored, and with deneu the optimal phase position initially preserved or later restored; The drive organs can have various causes accidentally delaying a drive.

JiS Referring again to Pig "6A and 6B Besug, üb is au see that the Seitgeberselle CH, the present iat only in the vMlotlaufwerk au, an input of an assembly is connected 139 ,, the timing pulse generator called wird.iJiese further eupfängt on the Connections 14üA, 14'Xl the signals emitted by the feed cell GA of the pilot drive.

009848/1426 _BAD ORIGINAL

Pig.9 shows clearly, albeit schematically, the arrangement of the circuits of the tent encoder pulse generator contained in the Uniselektor 139 · The assemblies 141 and 142 are Impulsfo rmer V _g rstärker without phase reversal. The assemblies 143 _f 151 "152 are inverting amplifiers, Jie logical divisions 144" to 146 are edge condition - 'ichaltungen in which a with einera diamond-shaped arrow "rkierter input indicating that only the positive-going iflanke of the received signal a transfer of a short xfpulses. The logic circuit 147 is an OR circuit for positive signals, the logic circuits 149 and 150 are neither-nor circuits, the flip-flop circuit 148 has two inputs el and eO as well as two outputs si and sO.

Pig. 11 shows the signals received or emitted by the generator 139, it can be seen that the signals emitted by the amplifier 142 in the course of each cycle consist of two positive xpulses, the duration of which varies from time t10.5 to time t19.5 or extends from time t3O.5 to time t39 _f 5. The flip-flop 148 (line 148s-1) normally goes to state ^M 1 "at time t10,5 and it returns to state" 0 "at time t3O.5. Since the inputs of neither-nor circuit 150 the When signals H and the signals are received from the output s0 of the latching circuit 148, the signal H1 consists of a positive pulse in each cycle between times t19.5 and t30.5.

. ·. "■ -" 009848/1426 "^ bad original

Since the Weder-lioeh circuit 149 from the output al of the flip-flop 148 is controlled, the signal 112 consists of a positive pulse between the time t39.5 of a cylinder and the time t10.5 of the next cycle. .Bein] The input terminal 153 of the Barrier condition circuit 144 is supplied with a control signal so that the leading edge of signal A? lets the flip-flop 148 go to the "1" state if it has not already been in this state, thereby correct operation of the arrangement is guaranteed.

The signal 111 and its complement ST are intended to to be fed to a coincidence detector, which in the brake control arrangement 98 each with an odd number Number designated drive is included, of course with the exception of the pilot drive, in the same way, the - »signal H2 and its complement ΪΪ2 are intended to to be fed to a coincidence detector, each with an even number in the brake control arrangement Hummer designated drive is included.

Pig.10 shows the details of A _u fbaus a brake control arrangement 98, is suspected of that it belongs to an odd-numbered drive Jie logic circuits 154 to 156 are ilankenbedingungsschältungen.

One

0Ö984Ö / U26 ^BAD ORIGINAL

An OR circuit is shown at 157. l) ie bistable Toggle circuit 158 is of the same type as the toggle exercise 148 of Figure 9. A relay '160 can be connected to a power amplifier 159 are excited by the output si of the flip-flop 158 is controlled.

The signals AVI and AVI, which are fed to the upper inputs of the edge condition circuits 155 »156 and the edge condition circuit 154, are in principle of the same type as the signals AV baw shown in FIG. AV, but of course it is au. notice that they are from cell GA of the relevant odd-numbered air system; ua ^ tnen, and that this is usually exactly in phase with the x ^; ilot drive should be. The signal H1 wiaä. fed to the lower input of the edge condition circuit 156, while the signal ΪΓΓ is fed to the lower input of each of the edge condition circuits 154 and 155. The flip-flop 158 must normally remain in the "0" state at all times. As long as there is the correct phase relationship between the cycle control wave of the pilot drive and the cycle control wave of the odd-numbered drive *, a short pulse emitted either by the leading edge of the AVI signal or the trailing edge of the AVI signal cannot be transmitted to the el input of the flip-flop circuit, since the ΪΓΓ is negative.

if

009848/1428 bad or, g, na _L.

When it happens that the odd drive si tie delay of more than about $ 5 the duration of the signals AV (10 milliseconds), a emitted by the positive trailing edge of the signal AVl short pulse during the time in which the signal HT is positive, i.e. after time t3O.5. This pulse brings the flip-flop 158 into the "1" state.

■ uicis causes the excitation of the Kelais 160, which is part of a group of heaters that is designed to excite the braking electronics of the drive in question. From this it follows that the motor of this drive is braked until it has assumed a correct phase position again. The helai group is also designed in such a way that the braking side is limited to a certain side span, for example 4 seconds, and that the fault detector arrangement is alerted if the correct relationship has not been accepted again after this period of time has elapsed,

It is easy to understand that the same results will be produced if the odd number of drives happens to assume a wet lead. In this Pail, however, a short pulse emitted by the Yorder flank of the signal XTT brings the flip-flop 158 to the _{"1" state before time t19 f} 5, which triggers the flashing. Since the correct fin relationship can be restored more quickly in this pail, the toggle switch can

under

009848 / 1426'- 'bathroom original.

under the action of the edge condition circuit at time t3O of the same cycle in the "O" state to be postponed.

The operation of a drive belonging to an even-numbered drive * Brake control arrangement is the same in all respects as the operation previously described »The only difference consists in the fact that the lower inputs of the flanks—

fc condition circuits 154 to 156 from the university selector die signals H2 and H £ received, which against the signals H1 and ST are 180 ° out of phase. The optimal phase relationship is obtained when this is provided by the Vorachubselle CA signal delivered by even-numbered drive - coincides with signal H2. So it follows that every readjusted even-numbered drive has a phase difference to the pilot drive and to any of the emergency services unsaved drives is discontinued. This results in the conditions of the one shown in FIG

"Receive optimal alternating operation ·

Note the following: Even if the optimal one Phase relationship cannot be re-established after the previously specified period of time can be used of the pair of drives can still be continued, but then a lamp indicating the phase fault continues to burn. The operator can then choose between two solutions:

You 009848 / U26 bad o _R , g, nal

You can either operate at a reduced rate allow the medium amount of information to continue, or it can shut down the system to remedy the deficiency, who caused the disturbance.

The following should also be noted! Even if the optimal one Phase relationship between two drives not sought is, a particular feature of the structure of the film drive gives a certain advantage. This signature ! consists of the possibility of a playback operation or Perform recording operation during the first or second phase of a cycle. Venn this This is not possible in the case shown in Pig. 7 had existed, the dead times would obviously have been even greater, and the mean one The amount of information per cycle would have been reduced considerably.

Claims

Q09848 / U26

Claims (15)

Claims ti · Magnetic film device for the step-by-step feed of one with edge perforations provided film and to utilize transverse tracks for the recording of coded characters with the help of continuously rotating magnetic heads during the standstill of the rilms, characterized by a rotating one Head support (23), which on its circumference η at equal distances "axially offset recording heads lying apart from one another and η carries reproducing heads which are axially offset from one another and are at the same distance apart, a cycle * control shaft, which together with the head carrier by a common synchronous motor is driven in such a way that the angular velocity of the cycle steamer is half as large as is the angular velocity of the head carrier, the head carrier and the cycle control shaft each having organs for display wear their respective position, a film drive device which, on command in relation to the cycle control shaft, advances the film one step, pulse generators, which generate display signals for the position of the heads and the cycle control shaft, a feed control device, which store a control signal and a trigger signal to the drive device, and through logical circuits for storage and mutual Control, which depending on the pulse generators iiit the Aufaeichnunga- and playback heads as well as with the Feed control. 0 0 9 8 4 8/1428 BAD ORiQfNAL Control device interact in such a way that in an operating cycle which corresponds more to a rotation of the cycle control shaft and is divided into equal phases (Recording or playback) in the course of the animal one or the other phase before the cycle indiscriminately can be carried out and then symmetrically follows a feed movement of the film by one step, which only in the course of the second stage either of the same Cycle or the following cycle can be carried out. 2. Magnetic film & device according to claim 1, characterized in, that the axial displacement of two successive recording heads (ü1 to E4) uni two successive Playback heads (Lf to L4) has the value (n-i) P / n, where P is the pitch of the perforations of the film is, so that in the course of the corresponding phase Rotation of the head carrier η <traces of the I ilms one after the other first from the η recording heads and then streaked by the corresponding η playback heads will. 3 ·, line film device according to claim 2, characterized in, that the rotating head support (28) has a position indicator * - -disk (37) carries * which has notches arranged in this way are that they with the help of a first photocell (UI £) η relating to the recording heads position indication pulses and with the help of a second photocell (GH) n + 1 on 009848 / U26 btelluncs display pulses relating to the playback heads " produce. 4. Magic film device according to claim 3, characterized in that that the cycle control shaft (52) wears an aperture disc (88), which with the help of a photo cell (CA) a Feed pulse determines which is the second phase of each Cycle defined and from the advance control device (96) to a solenoid actuating the film drive device (80) provided that the feed control device receives a feed command in advance Has · • 5. l- & gnetfHingergerät according to claim 4, characterized in that a film feed control device so arranged is that they use a photocell (CVA) to generate a control pulse outputs which to the feed control device (96) which is transferred in the event that the step feed of the elm has not been carried out correctly, a central malfunction detection device (97) for preventing the execution of a new feed command can excite. 6. Input-output organ for a data processing system with a plurality of magnetic film devices according to claim 4 or 5, which are with even and odd numbers designated • * 0098A8 / U26 are designated, as well as with a group of memory *, counting, Control and selection circuits, characterized in that ■■ its logic circuit (12) that of. the playback heads α (L1 to L4) sequential originating from a magnetic film machine Playback signals are transferred to a buffer register (99) can, when set in action by a reproduction permission register (119), which the reproduction in the course of a phase only if a playback command originating from the data processing system is followed by a ' Command confirmation arrangement (115) at least before the last recording control display pulse transmitted during this phase (according to claim 3) has been confirmed. 7 · input-output device according to claim 6, characterized in that recording circuits (136, 134) connected between an output of the buffer register (99) ϋ · β '~ df en recording, nuogsköpf (E1-E4) through din Aufzeiohaungie- λ zulasauogsregister (15Jf) can be set in 'activity, which allows the recording in the course of a phase only ^: when a recording command originating from & e file processing system Auroh the command confirmation arrangement (115) at least before the last ι issued during the preceding phase Repeat notification impulse (according to claim 3) has been confirmed. ... Jk ■ BADORIGtNAk QD98A8 / U26 ~~~ 8 «input-output organ according to claim 6 or 7, characterized in that the buffer register (99) shown for the parallel vacation conversion and vice versa is assigned a character counter (100) and a word counter (101) which are designed in this way that the output of the V / ortiähler delivers a "bloofclosing signal ¹¹ , if the number of characters passed through the buffer register in the course of a recording or playback operation corresponds to a liatenbloek, ie is equal to η-times the content of a transverse track of the express" 9. Input-output device according to claim 8, characterized in that in accordance with the fact that the η playback heads (11 to 14) can sweep η transverse tracks after the η recording heads (ü1 to E4), from the command confirmation device (i15) Controlled logic circuits (158, 113) can trigger the operation of the playback approval register (119) immediately after the output of the block lock signal terminating a recording operation, to initiate the execution of a playback operation for overriding the data block that has just been recorded. 10. Singabe-Auegabe organ according to claim 9, characterized in that a logic circuit (128) is arranged so that it aase the blooksohlussignal to the gate thrust control arrangement (96) as a V _o rschubbefehlssignal either at the end of normal playback or at the end of a test playback transmits. ^009848/1426 BADORKBiMAL 11. üiinsabe-Aussjiabe organ according to claim 10, characterized in that that the from the TorachubsteuGranordnung (96) via the central disturbance detector arrangement (97) of a magnetic film- Control of the command acknowledgment order exercised by the device (115) is such that when one is vaccinated the same thing Device related new command this command between the. instant in which the feed control device has received an advance command signal and the end of the Step movement of the elm cannot be confirmed, 12. Input-output organ according to one of claims 6 to 11, characterized in that in a pilot magnetic film device the cycle control shaft (52) has a second diaphragm disc (92) carries, which with the help of another photocell (OH) Give a first and a second time pulse in each cycle generated, which are at equal distances from each other and are used by a generator (159), which . in separate outputs a first timer pulse (H1) or « delivers a proper timer pulse (H2) of suitable polarity 13 Mugabe output organ according to claim 12, characterized in that that each of the readjusted magnetic film devices with the exception of the pilot magnetic film device B is provided with a brake (95), which the parts of the; ynchronmotors can brake, as well with a Bremssteiierauorduung (98), which the electromagnet (94) the brake can excite and an impulse coinside detector contains which the the angular position its cycle control shaft indicating feed pulse (GA) 009846/1426 BATH ORIGINAL receives and is connected to one of the outputs of the timer pulse generator (139). 14. Input - output organ according to claim 13, characterized in that in at least one readjusted magnetic film device, for example with an even number, the coincidence detector receives the second timer pulse (H2) with the result that its motor is braked as long as the V ₀ ^rsc h-ubimpul8 (OA) is not in coincidence with the timer pulse until a phase shift of one phase is achieved between the cycle of the unregulated device and the cycle of the pilot device. 15. input-output »organ according to claim 14, characterized in that .ass if there is at least one further readjusted Magnetic film device, for example with an odd lobster, the Coincidence detector of this device the first 2nd encoder pulse (Hl) receives with the result that his engine is braked, as long as the feed pulse (OA) does not coincide with the first timer pulse lsi until the cycles of the readjusted Device and the pilot device are in phase. 009848 / U26 he Blank page