DE1774431A1 - Magnetomotive storage system - Google Patents

Description

TM NATXOKAL CASH REGISTER COUPAlHi Dayton, Ohio (V.st, A #)

Patent application Ir * ι
Our Az * t ^1044/0 © rmany

MAOTE-MOTOR STORAGE SYSTEM

The invention relates to a magnetometer Storage system whose circumferential magnetisable « Area with a large number of ring-shaped storage tracks Jj

let go, with one with the surface. working transmission device and a foei ~ tionierungevorriohtung sum moving the transmission device transversely to the storage tracks to at least a selected memory pure. In a well-known Data storage facilities of the type described are stored in a multitude of ring-shaped tracks on the magnetizable en area saved ^ with one for each track own transmission head is provided. Sine oil marriage The arrangement is very complex due to the large number of transmission couplers required a one of the transfer heads the density is limited, i

in which the data storage tracks are arranged side by side can be.

In a further known arrangement, a single transmission head is provided which, under the control of a servo system, is moved transversely to the track in order to control a certain track. This servo system immediately reacts to address signals coming from an external source to Bine solohe. Arrangement is disadvantageous as relatively compiled facilities erforderlioh "ind, u" precise adjustment de © Übertragungekopf it to the "ewünechte track ensure ₀ eu - ·

19.δ.19ββ 209811 / U21.

BATH ORIGINAL.

Task of. Invention is the creation of the Qineβ Spelohtrayattoe of the JLTt ₉ mentioned at the beginning, which does not have the disadvantages mentioned.

The invention is characterized in that the transmission device during its cross « Movement of the storage lanes in each case the lateral position derives track address signals indicative of the transfer device to the memory tracks, and that a control circuit "is provided" due to these signals cause the positioning device the transverse movement of the transmission process when the selected storage tank is reached) interrupts

Sin AusfUhrungsbeispiel the invention is in described below with reference to the drawings. Seigt in these

Pig «1 is a general block diagram of a basic system a data processing system disc with a disk storage device according to the invention random access to collaborating entities,

Flg. 2 shows a perspective view mechanical details of a disk unit dee he inventive S ρ ic her sy sterna,

7ig «2a is an analogue of part of the Poeitionierungsvorriohtung in Pig. The contents of the transfer heads shown in FIG. 2 for the configuration of certain punctures Eum optional setting of the transfer head arrangement to selected traces of attachment ₉

? ig. 2b a greatly enlarged diagram height Representation of adjacent marking marks the surface of a storage disk eur illustration des Le ο β na from In den Markiere pure recorded «Idreaeen eioeen during the radial movement of the Transfer head arrangement,

209811 / t421

. BATH ORIGINAL

Fig. 3 to 5 different oil lines for Announcement of the recording on the upper one AufBelohnung «plate, as well as the associated multi-head arrangement the disk unit shown in Fig. 2,

6 shows a schematic representation of the recording format of a typical marking track and FIG a data track on the top recording plate to visualize the access to any selected sector of the data tracks on the uppermost mounting plate of the in Figs. 2 to 5 disk unit shown, '

Fig. 7 is a block diagram from which the general Systemic arrangement of a typical disk storage » unit with two disk units emerges,

Figures 7a and 7b together are a detailed Bleck diagram the double * generally inclined in Fig. 7a unit,

Fig * 8 a blookdiagraon in the Flg. 1 and 7 disk storage shown as a simple block ^ expensive * unit, with the central unit for visualization the control for the disk storage double units in block form e Inge se is worthwhile, and

9 shows a schematic representation of a division of as Bei * game selected expensive information se are ready to be called up and controlling the in Flg. 2 figuratively and in Fig. 7 » 7a and 7b are the same plate unit as shown for the Access to a sector of the data lanes.

19 «6.1968

209811/1 * 2.1 _oB1GlNA L

General description

1 shows a block diagram of a basic system of the data processing system according to the invention with a central unit 10 _9, a disk storage control unit 12 and four disk storage double units 100 to 103, each consisting of two disk units such as "104" 105, hereinafter referred to as "double storage units". designated. The central unit 10 includes a eohnellarbeltenden memory, computing and Verknüpfungewerk, a program controller, a timing controller and EingabQ / output VerkiiUpfungasohaltungen for data transfer operation "η with peripheral on · called units" d "h _e the Doppelsp" iehereinholten 100 to 103 $ as a result of Request for the transmission of data from or eu of a specific one of the duplicate storage contents 100 to 103 via the disk pe iohtr control unit 12 «

The central unit 10 is normally equipped for an "on-line" cooperation with the dual storage units 100 to 103 and various other types of peripheral units via a common connection line 11 and corresponding control devices therefor t2 and the double receiver unit 100 are shown and described as one. Accordingly, as in Pig. 1 geeeigt * "on-line" with the Plattenep "Icher-Stauereinheit 12 work, which controls the Dopptlapeiohereinheiten 100 to 103 and their" ntepreohendt disk units · The central unit contains a command part in memory for SpeioVarn commands eineohließlioh BZH OFF commands The ⁿ on-line "operation with" feedback "from the flattensicherst your unit 12 · L * Btere in turn enables the central unit to have" off-line "access eu S

unit of the peripheral dual storage units 100

June 19, 1968 209811/1 * 21

BATH ORIGINAL

With 103 stored data according to the disk storage control unit 12 "on-line" displayed its expensive information. Demcufolge the CPU passes 10 agent e EIH / AUS.Befehlen calling a specific peripheral to unit including their "off-line" control by an input-Auegabateil of niohtgezeigten computing and link works of the CPU 10 and the Plattanspeieher control unit 12 a _e A Further description of the control system according to the invention will be given with reference to FIGS. 7a, 7b and 8 after the description of a typical disk unit 104 of the M.

Double storage unit 100 given "

Pie Baten- and Mark Puren on the magnetiaierbaren surfaces of the disks are respectively represented by the designation of their zone ( "animal tracks) and its cylinder (* all traces? Those of the above without movement" are addressed tragungekopfee) in _a Sun STCB "is the Da least pur 2-0 the track in zone Z ₉ cylinder 0 for a beetinmten liese / Sohreibkppf · To distinguish between reference digit and desimal digit binary digits (bits) are underscored in the description * The outputs of the in Fig. 7a * 7b and 8 shown circuit blocks «earthed by a capital letter followed by a lowercase letter, s« B «output Ud for the decoder» with the exception of bind the disk unit selection hold circuit SL1, the double storage unit functions «hold hold FL1 and various counter and care hold outputs (Fig. 7a , 7b, 8) · These are only denoted with capital letters, followed by a number divided into close-up if the ueitliohe Follow® is up will ■ oll. A circuit output marked with an "*" shows a coupling between the disk storage control unit and the double memory units

19 · «· 19« 209811/1421. _BATH

177U31

Control information processor 221 (Pig. 7a) represents both the output signals and the output signals if output signals are required specifically for inputs from other positions, they are provided with a string. For example, an output qualifier Hd 'from Hol is applied to a link element at the input of the plate unit selection-Haläesohaltung 223 · De _β · the output signals of this circuit are very often; _{are required »the designations SL 1} and SL ₁ * are used for separate L and O output signals. The input signals for the various circuits are designated by the outputs connected to them.

In Pig. 6 and the recording formats for only a single data track 128 and a corresponding one Marking track 127 shown «The other godparent and marking tracks have the same corresponding format * Preferably is worked with a self & tfabe process " The conversion of binary signals from conventional binary signals with high or low voltage « level in signals for self-clocking process and vice versa are well known. Since the invention is not directed to this conversion, there will be none more detailed description of this given »

Plate unit (Fig. 2 big 6)

Pig 2 shows a typical disk unit 104 which forms part of the double ^{disk storage unit 100 (n} 3> oppels ptl for short, rather "unit"), which consists of a detachable set of three recording disks (disks) ape 1 14) and a l%> iir head arrangement 16. You record plan &'bten 14a »14b, 14o

19 * 6.1968

209811 / U21 BAD ORIGINAL

each have an upper and lower magnetizable Recording area for cooperation with corresponding transmission head catchers 17a to 17f of the Hehrkopf arrangement 16 "

The one in Pig. 2 shown Mahrkopf arrangement 16 for the recorder 104 is used to position the Group of eeohs head units 17a to 17f for laying and writing τοη information on the appropriate Plate flats and retraction of these head units rotatably mounted, which means that it can be removed and inserted » put τοη interchangeable plat tonstackeln, e.g., des Plate stack U, is made possible. ,

Like from Pig. 2 ereiohtlioh, the plate stack 14 of the plate unit 104 consists of three Aufselohnungsplatten Ha, 14b and Uc ₉ which are attached to each other, so that they stack 14 in the various disk units as a whole τοη a spindle 13 of the corresponding disk unit The individual heads 17a to 1? f each consist of a group of twelve read / write copings for a corresponding one of the six recording surfaces of the disk stack 14 with a common storage to ensure a uniform lateral spacing of the “wolf read / very” ib heads in read and write operations on the same abotand of each other (Baten * and Uarkiere puren) of the corresponding reward area.

June 19, 1968 '

20981-1 / 1 * 21

arrangement 16 can perform a common radial movement in any different positions on the entopreehandn recording surfaces. Each leet / rubbing head can therefore be set in such a way that it jets a corresponding group of six information tracks. The group of twelve heads for a single disk surface, b * B «the head unit 17a (Fig. 4) can therefore individually address the radial positioning movements of the positioning device in a total of 12χ16 (« 192) information tracks. All lesft seventy-two / Sühreibköpfe the Mehrkopfanordnung.16 for the sixteen positions are therefore to address 1152) information tracks capable of inegesamt 16 χ 72 C * For simplicity the 72 information addressed in any position of the multi-head assembly · »tracks as ^H Cylinders ". There are therefore a total of sixteen cylinders, namely one cylinder for each of the sixteen positions. In each cylinder, the seventy-two information elements comprise pure seventy-four data memories and also additional information tracks one referred to as a marking track, the certain control data including timing data, the identification of the "Zjcme" and the "cylinder * ¹ as well as the address of any of also individually addressable sectors 110 to 117 (Fig. 3) with the numbers 0 to 7 dor one the each called up of the read / write heads adjacent disk surfaces-included. You can use the remaining seven tracks (and heads) and Reeerra-8pureηο which can be used, for example, as Eswatz & atenspuren if a data head fails *

June 19, 1968

209811/1421 bad original

177443t

In FIG. 3, one of the plate surfaces, namely the surface 15 of the upper storage plate 14a dee plate atapela β before oat ie cn? which contains both Baten-β pure and Kar kiere pure. Figure "4" 5 and 6 show more details, can be seen from those such as the sow is recorded on ä »n plate surfaces that Torgänge woraue for addresses of individual Batenburg" pure and a specified or saehrerer a group of Dateneektoren 110 bia 11? As can be seen from Fig. 3, the top 15 of the upper storage plate 14a is divided into similar sectors 110 to 117 * It contains 176 ring-shaped bat tracks 109 * and ten pure markers 108. In Fig. 4 there is a complete battery storage sector 110 ( Sector No. 0) shown with the head unit 17a. In connection with FIG. operations continued.

In the upper part of Fig * 6 the details of the Format of a typical marking track 127 (marking pure Kr. 2-0) is shown while the lower part of FIG. 6 shows a certain Datenapur 128 (Batenspur Hr. 2-0) in the data « sector 110 (sector ITr. 0) illustrated. Shown « typical marker track 127 contains

1st 1 »need a record-free gap / üisohen-.

bar ten sectors No. 0 and 7 (sectors 110 and 117); in such a gap there are no " Signals to delimit sectors »what by Detecting the absence of signals;

2. An introduction 119 τοη five-two bits containing a 10-Bäriifferttaustor / JO ₁ IO n.10 for setting the level of the signal output of the marker head

19-6.1968 · ■■. '■■

209811/1421

- ίο -

3 * synchronization bitfl 120, containing 11 bits (SYHC-AD) after the introduction and before the Adreeee sum actuation of the control settings of the called double telephone unit (Fig * 7a) to £ eee * n the address of the corresponding dateaapur and the corresponding sector;

4 «an address part 121 (marking) of seven Please include the address of the zone (z). dea Zyllndtre (y) and dea sector (β), β · Β. the Zone 2 (yyy), the cylinder door 0 (00) and the sector 0 (000) t

5ο a data entry 122 of 240 bits, containing a J _- O (or PJ) bit must, since all signal sources are used for data entry on the data track during writing ( 1010 ... 1p ) "

6 *. Synohronization abita 125 »containing JJ. Bits (SYHC-DP) before the data clocking of the marking track 2-0, for example, sub clocking and controlling Circuitry for writing data in the data field;

7 “a data clock 124” containing a JO- (or (> £) -Bltaueter sum clocking the writing of a maximum of 512 9-bit characters (4608 bits including dee parity abita) in the data field of the called data track and the called sector st

8. Synohroniaierungabite 125 »containing JJ, Bite (SYHC-EDP) at the end of the data field Eum clocking and controlling (terminating) the reading and writing of data and initiating the work of the Closing bits supplying device during certain Visual rubbing operations;

June 19, 1968

BATH ORIGINAL

2038f1 / 1421

^ '177U31

■■ - 11 -

9 «five-four final _{bit 126 f} consisting of a (H-flower pattern ( 0101 ... js).

The typical data track 126 shown in Pig »6 was paid for by the data magnetic head 107a, the το11ig built in the same way as the other read / Rough heads dlneohlieSliQh dee Harkiexamfietkopfes for the marking track. You relative shift from no marking track and data track signal, like through the dashed lines in Pig. 6th illustrated, corresponds to the linear reconciliation ■ wipe the lee air gap and the visual air gap a Lest / Sohreibkopf es and especially the linear one Spank bung 129 of the air gap of the rake magnetic head and the «Sohreibluftspelts des auf ge» called Dateneagnetkopfee 107a "Since the Einleltungsbit" 122 deijüarkierepur 127 (as well as the Bynohronieeierungsbits 123) from the Marklerepur as part of the The rubbing operation can be copied immediately after completion of a comparison follows, in which θion shows »that the desired address and the marking (Address) are the same, the writing part 150 of a called data magnetic head 107a records the data * initiation bits 132 in the manner shown in FIG on «The actual writing of data begins after the synchronization bit 123 or 132, if the WRITE DATA character from disk storage controller 12 are supplied · To simplify the description, 512 data characters are all in the Recorded data track shown occupying the entire data field 133 «The data field contains Jβdooh often less than 512 characters and is then occupied by the Sohlufibits 134. As a result, the data field has

19 * 6.1968

209811 / U21

a variable length, as can be seen from the following description of the work of the Dcppeli3peic | iefe4nh®it · On the other hand, in the preferred embodiment of the invention, the number of characters is limited to a maximum of 5Ί2. The recording of more than 512 characters is prevented by controlling the "poppe 1 storage unit by means of signals read from the marked; pure read signals, ie synchronization bit 125" The multi-head arrangement 16 shown in FIG. 2 can be addressed »that any of the sixty-four magnetic data heads of any disk unit are called by means of an address consisting of six bits and supplied to the called dual storage unit. Dae calling dee reading portion or dee Sehreibteile dea respectively called the vierundeeohzig data magnetic heads is done by an additional · "Fiuiktionsbit" ο Furthermore allows an additional "Platteneinheitoblt ¹ * dna calling d" r respectively desired the beidon plates "inheitan (BCD. The disk drive unit 0, or the disk contents of the double storage unit 10O) ₉ where another $ 4 data tracks (128 data tracks in total) can be directly addressed without moving the multi-head arrangement 16 of the disk unit 0 or 1. This means that the four double storage units 100 to 105 (Fig * 1) with a total of eight with four disk storage control units, 12 connected disk units, result in direct access ZM to an extremely large amount of data, since a large number of data tracks are permanently located under the data magnetic heads of the multi-head arrangement of each disk unit.

209811/1421 bad original

The data access operations are explained in the following context with the disk unit 104 (disk unit 0) of the double pelon unit 100. 2u which called them warden "not among the vie * - are undeeohsig Datenaagnetköpfen the liehrkopfanordnung, carried by a tu fiadialbewegung?. a combination of sixteen Zon »XL · - and cylinder positions of the multi-head assembly 16. As shown in Figure" 5, are animal Zones I ₉ O ₉ 3 "2" and selectively adjusting the individual I * ee / 3ehreibktipfe the storage array disks 0 Torhanden "Each zone contains four cylinder 3, Z ₉ .1, 0" the MarkieraagnetkGpf 106 and 107a are Datenaagnetkopf inTolllnien in Fig · 5 over Abv Datenepur 128 and 127 llarkierapur (data "and Markierepur 2-0, ie zone 2, Cylinder 0) of the storage disk * 14a sloped. The magnetic heads 106 and 107a can optionally be set to any of the animal zones 1, 0, 3 or 2 by actuating the zone positioning mechanisms 19 (Fig. 2) , 2, 1, 0 within one of the zones of \ ₉ 0 _r 3, 2 is done by the cylinder position. ■ oohanieau · 20 (Fig · 2),

From the foregoing, it is “rsiohtlioh that an“ address (control information) and in particular the zones and cylinder parts of the coupling units 100 to 105 τοη of the central unit 10 ”resulted in a radial movement of the M # hrkopia & ordnung 16 of the addressed double pe iohits and disk unit of this only generate atm »if the data to be expelled is not ready under wines der Baten * agzietkäp £ eb @ f inciet« bin · corresponding ·

209811 / U21

177U31

The selection of the data track is thrown by reading the address parts of the marking track, each of which (one for each of the other sectors) contains a record of the zone .ig of cylinder 00 and sector 000 , ie in> ig. 6 shown «Before reading or writing seeds on the mentioned data track, there is a positive Tergleioh of the recorded zone, cylinder and sector adreeso, on the pure mark with the de? Central unit supplied addresses required »In the case of negative Tergleioh no access to data can take place ·

Each of the other address parts (an address part near the beginning, each sector) of the marking track contains the address of the corresponding radial sector, and consequently the sector addresses 000 to 111. ) for each of the other sectors 110 to 117 different “You” ground identified by the sector numbers 0-7. As already stated * "u3 before reading or writing data, the sector must be properly monitored to ensure" that the correct "sector is addressed is addressed in order to read or write a data volume which comprises more than 512 characters and which requires a lot of storage capacity than a data sector . a data track and a memory area of several consecutive data sectors requires »only the first Sekteradreaee compared with the first addressed sector of the number of consecutive sectors in order to save data in all of the Ansah! read from sectors "u" or "u e earsiben". The tergleioh of addresses of the first number of sectors

June 19, 1968

209811/1421 bad original

177U31

following sectors is controlled by the control circuit prevents the called duplicate storage unit, eo that the Dpppeioheinheit continues in all " High number of sectors data can read or write »Details of the control circuit for the aforementioned operations are no oh based on the Pig. 7a, 7b, 8 and 9 explained.

As shown in FIGS. 2, 2a and 2b, the positioning of the multi-head arrangement 16 takes place to any of the data tracks by reading the address atoile recorded in the marker tracks and comparing the same with the address provided by the central unit 10. An important feature of the storage system according to the invention exists in it, the ones recorded in the closed marking tracks Zone and cylinder addresses during the Read radial movement of the multi-head arrangement bu «around the marking head on the marking * pur with the desired Share address «, whereby the called data magnet head is divided into the desired of its corresponding data tracks · For example the data magnetic head 107a on its data track 128 (Fig. 5) by looking for the marking track 127 and '

Setting the marking magnetic head 106 on the marking track

127 Positioned The following are the sum repositioning of the multi-head assembly 16 sum setting of the data magnetic head 107a to the data track

128 necessary steps.

The first step is only due to a third Change »from cylinder 3 to cylinder 0., in comparison eu Zone repositioning movement η causes the cylinder · = positioning mechanism 20 an immediate movement » around the multi-head assembly electromagnetiaoh from the cylinder 3 to be set to cylinder 0 «As a result,

June 19, 1968

200 * 11/1421 BAD ORIGINAL

177U31

There are official repoing movements from zone HU zone "at least four magnetic tracks or a variety of four marking tracks up to a maximum of ten marking tracks on the same line as the first and last marking track. So brewing, falling desired ₍ while repeating movements tone zone to zone only every fourth mark is read in its purest form «

After cylinder movement and repositioning hence the zone positioning aeohanism 19 about this, the Markierapur 127 according to the search for new address (zone 2, cylinder 0), As the multi-head assembly 16 is moved radially (while the disk is rotating at a certain minimum speed), the Marking head through the marking tracks as in Fig. 5 the dashed arrow is inclined, and reads the marking track recorded in the one overflown Addresses "If the marking track 127 is read" which has the desired address (zone Jg, Cylinder 00) contains «the radial movement of the multi-head arrangement is interrupted around the data magnetic head 107a to be set exactly to the center of its data track 128.

In the above-described depositioning - operation enables the inventions system reading during the radial movement by optionally using the outputs of the marking magnetic head Control of the zone poliation mechanism 19 only during periods of time in which the marking magnetic head Pearly over the side edges of the single ones Marklere puren is · before he gets over the <? N center, around a delay time for the Zonsnpositionierungemeohaniemue 19 when the radial movement is interrupted, if the accustomed marking

l9.e.19SB 209811 / U21

BATH ORIGINAL

β pur duroh reading the adreeae of the mentioned salt »- * edge is found during the aforementioned time roughness before centering on the marking track», the zone orientation is based on a positive comparison with the unfamiliar S pur adreeae only with zone and cylinder (e.g. zone 2 (J ₁ O) and cylinder 0 (CX))) to interrupt the radial movement and move the magnetic head to the center. # "Als4r-Dieber desired marking m track divide. By centering the Marklezta magnetic head on the putty of the usual marking track, the data magnetic clusters of the sweeping head arrangement 16 are eeatriert on the corresponding data tracks, that is, "h _o bwwbw o4wn #" VtT 4 times! "iffΠ I ¹ I f B VO rffflHtMflBtett - ^^ TL ^ SP ^ KP ^ JHB—

the called one. Data magnetic head ■. 107a to the addressed data track 12 (track no. 2-0).

Bas control signal bub generate the desired Periods of time to empty one of its marking tracks during radial repositioning movement on the multi-head assembly 16 (from zone to zone) is secured by a bracket on the shaft of the motor 18m (Fig. 2) and a Sehalter 18b with a Nookan follower 18c ge f

supplies, which is actuated by an aneate * 18a for radial outward movements (Fig. 2a and 2b) and a link control signal with a high voltage level (+47) sucks at the output RFY. The position of the lug 18a with respect to the position of the multi-head assembly 16 is such that the marking magnetic head is over any of the marking tracks, but no oh. is not centered on this · Xn FIG. 2b, the marking magnetic head 106 is sehtmatisoh (solid lines) gas-inclined radially above the marking track 127 and the inclined angular position of the cam 18 in FIG. 2a corresponds to this radial position of the marking · _;

Magnetkopf · * »The Zeitrauneo holder 18b is through

209811/1 * 21

June 19, 1968 ..-. - "

dan aneates 18a for less than a rotation of the Storage disk Ua actuated, and the marking magnetic head is on the marking track 127 immediately after dta Torbailaufen dee approachf18a at Hookenf olger 18o sentrlert. During this short period of time of actuation of the switch 18b, the zone and Cylinder address aue the Markitrapur 127 jelly and old of the τοη the central unit 10 supplied, really · »compared to false zone and cylinder adreaee. at Poaittvea comparison is the radial movement of the multi-head assembly 16 by de-energizing the motors'18m interrupted »and the motor shaft is at one of the« atimten position stopped, making the hook follower 18o gets between the sowings 18a and 18d, as indicated by line 150 in Figs. 2a. At the The Harklera magnet stops the Hotorwelle head in "a final position centered on the markers pure 127, as if through the trio Poeition 106f for the magnetic marking head in Pig, 2b sauteed

Can be set up by means of an arrangement ™ Rierundeeoheig Datona magnetic copiers exactly on the slide

• pre-existing data tracks for zone 2-cylinder 0 · Poeition of the multi-head assembly 16 can be centered. The multi-head arrangement is shown on the other five cream positions 16 set in the same catfish when The radial movement of the multi-head arrangement includes a repoaitionleren τοη zone to zone and SELECT towards the outer edge of the storage disks -Let the movement run from zone to zone a radial movement in reverse or EDiWAHTS-RiOAtUBg (towards the center of the storage disk Ha), then aioh the Nooken turns, as if through the geatriohelten Arrow 151 in * ig. 2a shown, and the

209 11/1421

BATH ORIGINAL

Ansats I6d is used to operate the switch 18b sur BrDiffraction of the linkage range signal BFX "It high voltage" level in the same toilet, wle in the preceding for the positioning of the multi-head assembly sum access to the addressed data track is described · Alp alternative «to this zum.Lesen only every fourth marking track and not each marking track moving in from zone to zone The cam 18 is crossed with the Hotorwelle in a transmission ratio of, for example, 4j1 coupled. The advantage of this arrangement is to read only every fourth marking track potential error when reading and comparing addresses of the other marking tracks.

Except for dtB, the arrangement described above an exact centering of the data magnet pots Multi-head assembly 16 to any addressed Guaranteed data track, it also suppresses from Control system incoming tram signals while the marking magnetic head the transition between adjacent marking tracks including any overlaps that may be present such tracks crossed »during the transition» when the marking magnetic head crosses over two adjacent marking tracks is located, the address reading is imprecise (interference signals), which is avoided by the arrangement described above »In the Marking tracks as well as in the data tracks becomes "wide written "and" read narrowly "so that the Markiero pure in Pig. 2b twice β ο wide like the üarkiermagntitkopf, doh. the reading part of what is called the marking magnetic head Read / write head, cind. The desired high trace diohte is due to the close objection to the Marking marks, like in Pig. 2b sohesiatieoh sung, enables ..

19 * 6.1968

209811/1421 _BAD original

In summary, it can be said that the invention Arrangement has important properties; through the the storage system according to the invention enabled to address any selected track the scrubbing head assembly by reading the addresses in the marking tracks during continuous radial movement optionally to be positioned radially. Because of these characteristics, it is not necessary to read the zone and cylinder adreaean on each marker * stop and resume movement. In this context it should be noted that the radial movement the head assembly 16 for reading the individual Marking tracks need not be reduced in order to achieve a complete revolution of the storage disk, but that only part of the Marking track (one or more sectors) in practical need to be read less than one revolution, since the zone and cylinder addresses are in each of their eight sectors are recorded.

. Accordingly, the control system in the existing time span the omission of a comparison of the sector address when repositioning the More » head assembly 16 moving from zone to zone. Correct positioning of the multi-head assembly 16 and ending the radial movement will be the recorded Sector address needed again for a proper comparison in order to access the desired Request to receive in the called sector «Exceptions are access operations to several Sectors "These will be discussed in detail later." Drilling.

June 19, 1968

208811/1 * 21

"- 21 ~

Ssteuergyef g add the Boppel storage unit Cffig «7 |

Hi the block diagrams dqr Pig »? The control system for the example selected double Ie pe Ichs pure 100 is shown. Details will be is related to the detailed representation diesue control · ayetease in FIGS »7a and Tb explains," In Figure 7, the central unit 10 and Aete ^ disk controller are einlw it 12 in Blookforia as a source of data and control signals for the Double storage unit tOO and the other double storage units 101 to 105 (f

shown*

The found in einejü or more selected sectors Her disk unit 104 or the twin memory unit 100 to be written Batenburg reach of the central unit 10 via the PlattenepeMher control unit 12 »u Sohreibecnaltungen 201 and then to Sohreibmatrii 202 or 203 of the respective called disk unit 104 or 105 · Niiaznt one For example, if the disk unit 104 is called up, then the data is sent to the respective called up of the data in accordance with the control signals stored in the H register 204 for the magnetic head selection. ^

Magnetic heads of the multi-head assembly 16 supplied. The '

Data are stored at the point in time at which the data track called up in the data field 133 (Fig. 6) of the called sector aw called up enters the data track. Clock pulse for the clocking and writing of the data are supplied to the power circuits and the K & r Icier magnetic head, which reads the marking track while the data is being written. The marking magnetic head 106 reads data from a data track, as shown in FIG

anti ■ · " _BA d

the marker β pure η * The ones preceding the data Introduction «bits 137 (Pig. 6) are rubbing before the start the data also through this marking magnetic head 106 supplied from a section 122 «Da in a data sector 512 characters each can be stored * and the number of characters is variable, the write operation also includes the writing of the tail bits 154- in the called data sector *

In the case of "reading sound data" by one of the data magnetic buttons in the master head arrangement IjS, the data are supplied to the central unit 10 from the desired data sectors in the disk unit 104, for example. A feature of the invention according to the Leeesohaltungen 205 a single sense amplifier for both data · and the Markiermagnetköpfβ the disk units 104 and 105 provided · De-running ο Ige share custody ax marking and data magnetic heads while Lee eo per at ions of disk units 104- or 105 into the reading controls 205 * The data read from the desired data sector are available at the same output as the information read from the marking tracks, including timing and addresses * signals, and the marking tracking control 206 either supplies a marking signal sun looking through the output of the marking magnetic head et by the gate circuit 20? of the disk unit or the storage device 208 of the disk unit 105 or a matrix signal sum switching through data outputs of the called up data magnetic head through the reading atrii 209 or 210 to the viewing positions. The data graining from the leeward circuits 205 are fed to the central unit 10 via the plate recorder control unit 12, while the hoisting magnetic head

19,6,1966, ■ "■ _{.. ■ · 4} * BADORlQfNAL ^

incoming address signals to the Address comparison circuits are created.

The tax system for the one and the same double units 100. bi3 103 controls j evr © i le both of theirs Disk units, a.B «104» 105 «The two disk units of a double storage unit divide eich into most of the corresponding control circuits Exceptions can be seen from Fig. 7, where the as Example selected dual storage unit 100 with the Zones / Zyllnderadreeeenvergleiohs- and -spoicherechaltungen 211, 212 is shown as the double storage unit 100 (Pig * 7) added tax information characters (Fig. 9) are controlled by the disk memory control unit 12 applied to dialing positions 70 » These cause an optional application of the address signals for the double memory unit 100 to the corresponding Zone / cylinder address peer and comparison poses 211 or 212 for comparing the new and old zone and cylinder addresses, votes these do not match, 'then, for example Control signals for the zone positioning uagsaeohanismue 19 and the cylinder poeitioningseohanienu · 20 (Disk unit 104) for repositioning the multi-head assembly 16 (disk unit 104) sucks · While repositioning! » the new address will be with the through the marking magnet head during the Hadial movement the multi-head arrangement 16 from the marking tracks (address aue marking) read zone and cylinder address signals compared * Haoh setting the multi-head arrangement 16 at the new address, the marking magnetic head reads zone and cylinder adroses that are the same are like the new addresses (zone and cylinder addresses), 'on what in a circuit 213 a sector "

June 19, 1968

20981 1 / U21

address comparison is carried out to determine the The tense ktor on the calibrating storage disk ~ closed find «The read from the found marker track Sector address is compared, and after finding of the sector corresponding to the new address, the marker comparison circuits 214 respond to the one output signals of the zone cylinder and sector comparison circuits indicating positive comparison Generation of a "positive comparison" output pulse SeC, which is sent to the LesfJMSHunge * 206 and the write control circuits 220 is created in order to keep up according to the function selection and the outcome of the reading / honor » circuit 213 either a read signal or a through-β c hai te ign al to produce. The output pulse SeC der Marking comparison circuits 214 are also applied to the Disk na pe ieher-S expensive unit 12 created, what ch a data channel 216 to the central unit 10 for reading or writing data in the called data sector is created «and the keep-through signal are only durohgesohalte if a data channel to the central unit 10 is available.

Address loading control (FJg ₄ 7a, 7b, 8, 9)

The eight disk units of the double storage unit 100 to 103 according to FIG. 1 are called up by a series of control information lines U ₉ P, S, A ₉ ^ (FIG. 9) coming from the disk storage control unit 12 via control information lines Ci1 ~ 6 . The control information characters are “supplied serially character by character” bit by bit in parallel and the individual bits 1 to θ of these control characters

209811/1421 bad original

Bind while by a series of load trigger pulses JC2 defined, consecutive time periods each at the outputs Hol-8 of the control information amplifier 221 {Fig * 7a) available «

The first control character U contains, for example, the address of the called up of the duplicate memory retrieved 100 to 103 and the respective unfamiliar disk unit thereof. Only the three least significant bits of the ZeiohexsU contain this address, while the other bits contain no address information. In order to properly apply the individual control characters to the called up of the double storage units 100 to 103, the series of charge control pulses JC2 βinοchileßlioh of the pulses TU, TP, TS, TA and TN is applied from the disk storage control unit 12 to the individual of the four double storage units 100 to 103 , Hur in the called double storage unit 100 cause the load control pulses dae Durohalttn of bits of the control information lines from the outputs Hc 1-8 of the control information amplifier 22t (FiC * 7a) to the corresponding storage and control positions there Doppeiohereinhoit 100. The first load store pulse TU switches The second and third bits of the first control character * U su of a UD-Entsohlüeeelungseohaltung 222 through. The output signal XFd of the decision lung circuit 2 switches the or to bit 0 (Hd *) * u of a disk unit selection holding latch 223 by means of which an output signal SL ₁ 'i for calling up the disk unit 104 is generated * Hur dio is called up to double epioherelnhoit 100 generates οine series ron Anepreohimpuleen (RUckmeld · pulses) a & output UABO * (Pig. 7a) "which is supplied to the Plattenspeioherstouerolnheit again, to indicate that the Boppelspeichareinhelt has been .aufgerufen 100 ·

19 ^ 6.1968 '

209.811 / 1 * 21

As a result of the second and third least significant Bite the Decode generated * '222 the called Boppelepeiohereinh © Xt 100. Ausgangesignal Ud high voltage level (-i-4-V) _v Vuc its Boppelspeiohereinheitwähl-hold circuit 224 to set (Figure "7), the output signal a USL ₁ generates high voltage level to the number of charging · "control pulses JC2 durchzusehalten, βο that * the question" Rückmeld®- double storage unit pulse generated by ¹¹ am Auegang Uaso who go to disk storage 'control unit 12th

The second control character is the puncture zeloheη F (Fig. 9), which contains the read or write function information (οχ for reading or JO tUx writing) for the called double memory unit 100 to set or reset the read / write and hold circuit 215 (Fig. 7a) * Only the first and second least significant bit of the puncture estiohene contains information »of which only the one available at the Hol (Hol ') output ·» Least significant bit (eg 0) by the second charge control pulse TF for reading / S ehre ib-Halt « circuit 215 is kept "Bas second, most significant bit (Hc2) of the puncture view is not used" since it is only a check bit in combination with the other bit for an "odd" combination, ie either W or 01, among other things to ensure that a correct Punktionezeichen is transmitted. As already stated, only the L output signals Hc1-8 as amplifier 221 are shown "in order to avoid unnecessary repetitions, while the Ö output signals Hd'-8 * are omitted"

The third control character (Fig. 9) contains the zone address (2 bits JO or Zont?.) _T the 3ylissäer ~ address (2 bits Oß or cylinder 0) as well as aae niedafigat-

209811/1421

19 * 6.1968 ^BAD ORIGINAL

significant bit .1 for the data magnetic head selection. Iöe: r corresponding third ladesteuerimpale TS and that Λυrgangesignal SL ₁ ¹ PlatteneinheÄrähl-Halteßchpltung 223 (disk unit 104) switches the zone "and Zy ^ linöeradreseenblts to the Zonin- and Zylinderadresaenregistern 225 and 226 of the disk unit accessed 104 (Fig. 7a) by . As already mentioned, the disk unit 104 was called according to the least significant bit 0 of the first character U (insert disk unit address) to select or parts of its disk unit selection hold 223, which the output signal SL ₁ 'sun calls from, for example, the disk unit 104 of FIG "called twin memory unit 100 provides" the third jade & expensive pulse TS is also directed tarhalteschaltung H1 of the H-register 204 (Magnetkopfadreseenregister, Fig. Tb) -angelegt, the two disk units is assigned jointly to 104 and 105 'is a result, the least significant bit £ for entspreohendtn Governed? Hold H1 for calling up the data magnetic head Mr. 1 switched through «

The fourth load expensive pulse TA causes the sector bits 000 and the remainder of the magnetic head address bit 00000 to pass through the fourth control character A to the register (Fig. 7a) or register (Fig. 7b), which the disk units 104 and 105 of the called Duplicate storage unit 100 assigned jointly. Binding: The fifth control character is retained by the fifth control pulse IH, which is the last pulse in this control pulse series JC2. Flg.? &), Whereby the three least significant bits denote the

June 19, 1968 209811/1421

BATH ORIGINAL

fifth control character K are diirchgeeehaltet to the number of successively to be addressed sectors (eB, Bite 100 or sectors 0-4) set "This control pulse TK is durohgesehaltet by the output VSL ^ also for adjusting the Doppelspeiohereinheitsfunktions holding circuit 228 (Fig. 7a), whereby an output signal FL ₁ with a high voltage level is supplied. By setting the aforementioned hold circuit 228 bid to terminate the data access, e.g. in a manner to be described in more detail later, an attempted calling of the Doppe1 memory 100 before the data access is terminated during the current call is made prevented.

♦ Address ver ^ leloh and magnetic head positioning (Pig. 7a «7b)

The control operations described above make it possible, for example, to call up the disk unit 104 of the double storage unit 100 with the data "pure 2-0, sector 0 and five consecutive sectors (0-4) thereof. As a result of the preceding control operations, the double 1 storage unit 100 is called and thereby set so that it finds the called up data track 2-0 by reading the marking tracks, which its marking magnetic head crosses during the zone movement of the head unit 17a (Fig. 7b) in order to receive signals with the new zone address (e.g. Zone address VQ) which is supplied by the output signals Ho4-5 of the control information amplifier 221 and is held by the charge control pulse TS and the output signal SL ₁ * (disk unit 104)

19 * 6.1968

209811 / U21

BAD GRiGJNAL

■ - - 29 »

applied to a start comparison switch assembly with a comparison circuit 72, during which a direct preliminary comparison of the old zone address bits stored in the 2iO «Regieter 225 (eg OJt ₁ ) is carried out with the new zone address bits supplied on the retained output signals Ho4-5» This preliminary comparison is carried out carried out because the new zone address, due to the large number of data tracks (4 × 64 or 256) within a single zone, is very likely to be the same as the old zone address. B. one million characters) for all requests including commands * which in many cases are required for a single program of the central unit «,

During the duration of the charge control module TS and before the ZO controller 225 is set, the new zone address (e.g. JO) is compared with the old zone address. If the new and old zone address bits are the same (positive comparison), there is no bin division of the holding circuit 229 »and the new address is not permanently switched into the ZO Hegister 225» If the new zone address and the old zone address are different (negative comparison), then the holding circuit 229 is divided into the inverted output of the comparison circuit 72 ₉ whereby a signal with high voltage level (+ 4V) is generated as the output RuST, since the new address switches through to the ZO register 225, as a result of which the holding positions Z01-2 are set from the old zone address £ 1 * to this new address W ₁ . aside from that

209811/1 * 21 _BAD0 RieiNÄU

June 19, 1966

cause dor comparison. the old and the new zone "adresse duroh" iw comparison circuit 74 a setting of the holding latch 230, whereby a signal is generated at the output OuT, which together with the signal coming from the output RuH is applied to the zone positioner aagemeohaniemu · 19 to the called data magnetic head on the called up data track in the called up zone, for example zone 2 ₉ . The zone address selected according to this example results in the connection * Tergleioh output signals with high voltage level both at IuI ale as well as at Ouf # since zone 2 is the outermost zone (also 5). Let the desired zone movement not be directed outwards * but inwards, then only a signal "it raises" * the voltage level at the entrance to the rut is required

mechanlsmu · 19 the read / write heads of the magnetic. head unit 17 «moved inside, if no signal with high voltage level at output OuS der Halt Bo posture 230 is available.

When setting the called data magnet head to the called data track, the output signals RuV and OuZ are applied to the zone positioning mechanism 19 (Fig. 7b> in order to carry out a zone positioning that results in a radial movement of the menstrual head arrangement 16 It flows in until signals indicating a positive comparison are detected at the outputs ZoO and YoO α · τ Son · »» and cylinder address comparison floats 231 b «w # 232. The rest and OuT output signals with a high voltage limit are generated as long as up for now. eeohr following ^ 're nce the called

209811/1421:

June 19, 1968

LOCAL GINAL

17 Η «

Baten magnetic head on the called «Datenapur 2-0 by the movement of the zone positioning community 19 has been discontinued »

In the cylinder address operation, the cylinder address output signals Πο2 and He3 deo control information amplifier 221 (Fig. 7a) divide the YO (cylinder) register 226 during the control pulse TS to the new address (z * B «OO), the output signals YO ₁ and YO ₂ of the YO register 226 are fed to the cylinder positioning mechanism 220, which actuates the electromagnets provided in it according to the new setting of the YO register - ^{7 of} the output signal YoO is always supplied when the new cylinder address corresponds to the cylinder address 00 read from any cylinder O-Marlciersurse and the second bit (ZO ₂ ) corresponds to the zone address of the reading (ReB) of this from the marking track o

The previous comparison of the zone address and the cylinder address is provided by during one by a link address submission hold 249 the addresses stored in the corresponding registers and the addresses read from the marking tracks (e.g. marking track 2-0) that are sent to the read output ReB of the leee ~ starting postures 233 (Fig. 7b) are generated, compares. This Leseauegangesignal ReB and the Output suitable of a marker bit counter 234 or the address bit counts BC1-2 and BC3 * 4 (Pig «7a) for this purpose, the corresponding comparison circuits created «Bie AdreessnbitiBähiuAgfftt BC1-2

^{19 6 1968} 209811/1421 bad

177U31

They contain corresponding output signals ZO ₁ and 2O ₂ for comparison with Sonana address signals, which are supplied from the output ReI) to Acirssß © nb: it times BC1 or BC2 in accordance with the following linking equations!

ZeO ■ SL ₁ "BC1 (ZO ₁ ReD + ZO ₁ 'RoD ¹ ) (t) ZeOa * SL ₁ * BC2 (ZO ₂ ReD + ZO ₂ * Se» ¹ ) (2)

The positive comparison indicating output "signal ZoO (GIoIqhung No. * 1) depends only on the first bit of the zone address and is used for adjusting the Markiervergltichseohaltung 235 _t the ressenbite case of a negative comparison of the second Zonena & or Zylinderadreeeenbits is rüokgestellt" Accordingly, the Ysüv contains knüpfungegleiohung fllr a positive comparison of the zone and cylinder addresses to find the called up data track, the second bit of the zone address during bit counting BC2 and the cylinder address comparison during bit counting BC3-4, which is expressed by the following equation

ϊοΟ «SL ₁ * £ ReD (ZO ₂ BC2 + YO ₁ BC3 + YO ₂ BC4) ReD · (ZO ₂ ¹ BC2 + YO ₁ BC3 + Y0 ₂ »

Zn the Pig. 7a and 7b, the deleted output signals have been omitted for the sake of clarity, and the linkage equations were also in the description used to clarify how the Diagrams have been simplified *

19 «6 1Q66

'209811 / U21

177A431

- - 33 -

Only the above comparisons are provided for repositioning the transfer head assembly 16 from zone to zone in order to set the selected data magnetic head to 2ί * Β _{β the detent track 2-0.} Duron the one parts of the called Markiermagnetkopfee to the corresponding marking track 2-0 is dae output ignal ReD (read zones "and Zylinderadreseen" as recorded on the Markierepur 2-0) supplied «This Ausgangesignal ReD maintains Yer- m

immediately with the new zone and cylinder addresses, the output signal Lo with a high voltage level at the end of the address is maintained, which is then maintained by the output BCO "ur address comparison circuit 236" by a pulse at the output SeC ("positive comparison") *, which indicates that the called up data "pur 2-0 is found. The output SeC is held by the output RFT (Pig. 2a} see the holding circuits 229 and 230 in order to interrupt the radial movement of the transmission head arrangement." This comparison β ο hl ie st the (initial) sector addresses do not match that for a leaan or writing of data u & ar for a ί

Request «signal for the double sparring unit 100 at the BeCO * output for the disk storage control unit 12 is required to have a data channel sur central processing unit 10 * Accordingly, after setting of the Marklermagnttkopfes 3.3. on the Spar 2-0 the called data eecto? then found by the fact that during the address bit dialing BC 5-7 tjUi · higher Voltage level (+ 4-V) at the output 3cQ ~ 1 ana te lie des Auegang EuS with high voltage level during the Counts BC5-7 must be present. An Auegaagseignml ScO-1 with hofcam voltage level is at

~ 34 -

"Poeitive comparison" of the new sector address® ^ Outputs S1-3 with that of the marking track 2-0 (Disk unit 104) read * address generated according to the following linkage equation

ScO-1 χ SI ₁ '[fieD (S ₁ B05 + S ₁ BC6 + S ₃ BG7)

+ ReD * (S ₁ ? BC5 + S ₂ 'BC6 + S ₃ ' BC7)] (4)

The marker balancing circuit 235 is used within of each data sector and at the beginning of the data field by the Synohroniaierungsbitaetektor.uad Output signal DF supplied to counter 237 (FIG. 7a) deferred

The address comparison described above includes a sector comparison in which an output signal SeO-1 indicating a positive comparison is only required in the first sector when a plurality of sectors are designated by the character K (FIG. 9) and the setting of the sector counter 227 the addresses of other sectors are not compared after the first sector has been found, and the outputs VhC * and STeO ¹ supply the required high voltage level at output ZYSO during address bit counting BC5-7 to generate the pulse at output SeC in each of the successive sectors. Since the zone and cylinder addresses do not change in operations relating to several sectors (same data track 2-0), it is assumed that during the address bit counts BC1-4 in each sector of multi-sector operations, comparison output signals ZoO and ToO with a high voltage level are supplied.

19.6.1968 ---

209811 / U21

laying / Sohreiboperationen CFig «6% 7a, Tb)

Before the start of a read or write operations are mentioned Baton track (s _ö example, data track 2-0) by a called disk unit in a be β ti mm of Boppelspeioher th © iAh.eiten to 103 (for "B *, the disk unit 104 of the dual storage unit 10O) ₉ 104 of the sixteen marking · * set the Markiermagnetkopf the called disk unit ia that described in the previous "Weioe to the correct (eg," the marking track 2-0) tracks to the J zone ₁ O- and cylinders GO read -Adreseensignale that SiOH adreesen at einom Ver ~ equal with those stored in the appropriate zone and cylinder registers 225 _f 226 for the requested disk unit new zone and cylinder · "prove to be identical .. Furthermore, it is assumed that the sector was found and the first sector address 000 was gales from this marking magnetic head and, when compared with the sector address 000 stored in the holding positions S1-3 of a sector register 238, is identical proves.

The reading circuit for address signals contains a single-reader amplifier 239, which enables the marking » Magnetic head amplifies incoming signals to the desired Signal level for the read output circuits 233 (Fig * 7b) to create. The marking reading delivered by the marking reading device 206 - Durchohaltsignal ImE Retains the output of the Marking magnetic heads of the disk unit 104 sum reading amplifiers 239 duroh. The read output circuits 233 set the output of the lee amplifier, for example from a self-clocked recording

June 19, 1968

209811/1421

tion in binary signal θ (high voltage level + 4-V for bit J ₁ or low voltage level for bit Jg) at the output ReB by tlarkierspur 2-0 read signals, except during the actual time span for reading from the called up data tone pur 2-0 (Fig. 6). During a write »operation, this Leeeveretaker constantly amplifies the signals read from the 2 * 0 marking track (., Which means that data initiation signals, synchronization«) signals and data clock signals are supplied for writing in the called up data track »The reasons for this can be found in the following explanation visible from the rubbing operation

In Leβeoperationen the changeover takes place from the output dee Markiermagnetkopfeβ to the called data magnetic head in the «shown 6 manner" in Fig piping switching is by changing dee Zustandeβ of Lee "control circuitry 206 sum generating achieved einee output ignale IAE ¹ old high Spannungepegel" The Impule on Auegang SeC is held to the back of the input of the Leaea expensive circuit 206 (in order to generate an output signal ImE * with a high voltage level) · This solves the output * signal Rd? (Lee © operation) of the read / write holding latch 215 and the output signal FL ^ of the DcppiI · storage unit function holding circuit 2 <λΙ * W; U; in fl. 7b the output signal ImE * is shown by the output signal SI. duration, which means that a battery is never generated. dae an aen shopping of the Leuoaiatrix

June 19, 1968

209811 / U21

177U31

is applied «This duration signal BeO is offset the read atrlx 209 in the position of the called Data read head from the data track shown in Pig, 6 128 (data track Hr * 2-0) read signals dom read * amplifier 239 feed. At the same time, during the period during which the output signal IeE ' has a high voltage level, read capabilities of Marklermagnetkopf sum XteOreretärker 239 through the Output signal ImE n with low voltage level blocked · The latter amplifies the output signals of the called (data) magnetic head including the initiation blts and synchronization bits, which the data signals and the tail bits the called up data track 128 (data track Hr «2-0) according to Fig. 6 follow» The binary line bits of the data track 2-0 are used to set the gain of the Le s ever star empty 239 for the called data head and they are of a long duration or length that while reading from the data track the correct gain can be set in this amplifier · The end of the preamble bits of data track 2-0 will be rewarded for the presence of the nit 132 Synchronization bit JJl · gekenneeiohne-fe, die duroh a Sianalfrmrhgang test · partial hold in the reading « initial attitudes 233 are established »with it they orseugen a control signal XoD, the about a past aes iynonronization record detector · and sanitation 237 (Pig «7a) is suggested in order to

8tand of a high voltage level aiii output AD (Address) to output a high voltage level (Data field) umzusohalten * The synchronization bit detector and counter 237 is its output AD delivering state to the output DP duroh «inen

19 * 6 * 1968 ". BADOFJiGlNAL

20881171421.

177U31

Synohroni6ierungeiBpule> at the output SyC of the mentioned linking element, the diiroh optional switching through the control signals XoB generated by the synchronization bits V ^ (SYHC-DF) is generated, an optional switching through the output XoD for-the Synohronleierungeblts JJ. from the Lostausgangaschaltungen 253 is characterized ersielt that dae Durchsοhaltsignal SBS duroh link dee signals BCO ¹ Bit the Ausgangesignal einee HAND-Gliedee is formed 238, "as in Pig" 7a angeieigt · Dae Durcheehaltslgnal SBE has during dee address Teilee each Markierepur (BCO ¹⁾ and while the data field parts are being read, the data track has a low voltage level

The output ReD of the reading output control unit 233 (FIG. 7b) is kept by the outputs DF and UhG * (data field and double input unit 100 are controlled by the control unit), whereby data * signals are supplied at the output RD * that of the central unit 10 via the plates "paicher controller 12 sugefUhrt werdeil · Dae Leeen of data in the data" pure 2 * 0 (Fig x 6) is terminated by Fee th division dee "data end""Zeiohene (? ig. 6) _t dae by 'the Paritäteprüfeohaltung 250 (Fig. 8) of the disk-βpeloher control unit 12 is determined to generate an output SoD * (end of data entry 254 »Fig. 8) au. This output EoD * is applied to the Harkierspurleeeeteuereohaltung 206 (FIG. 7a), whereby the latter is set in such a way that an output suitable LmE old high voltage level (+ 4V) is generated. The setting of the reading control system 206 at the end of each sector is ensured by the output CgD of the clock gap detector 239a (Fig. 7a), which detects the absence of recorded signals on the marking track in the gap (Fig. 6) and also detects the one sector. Am

19.6.19 «209811 / U21

Another single input is created by the outputs DF and UhC * ¹ for those cases where the disk storage control unit 12 is called, but does not respond. This is followed by an immediate return to the marking track (output signal LmE with high voltage level). By the return of the signal LmE to a high voltage level =. The signals from the marking head to the read amplifier 239 are kept through, and at the same time Stur or other signals from the data magnetic head to the read amplifier 239 are blocked. The position of the "end of data" character along the data track 128 within the data field or at the end of the data field;

_{As shown in FIG. 6, β} varies with the number of data characters (up to su $ 12 characters). In FIG. 6, 512 characters occupy the entire data field 133, and the "end of data" character begins with an O-bit, ie one bit after the end of the data field, and consists of eight bits that go down to the bottom bit. 134 er * streokea «The way in which the" data end * * character is formed when creating and recording the final bit is referred to in the following as part the scribing operation chosen as an example is explained.

During the write operation, the called up marking track 2-0 is read continuously, as already explained, and the application of marking signals η to the read amplifier 239 is not interrupted during the writing of signals in the called up data track 2-0 (Fig. 7b) and the clock pulses C are applied to a line write generator 201, the outputs of which are coupled to write matrices 202 and 203. Subject one «" positive "address comparison (including βinea ß ektoradre β β enver same), the tnn. Xmpule SsC,

209811 / U2V

June 19, 1968

as in the previous one for a read operation 8christen, will through the Sohreib matrix control holding (Pig, 7a) a Sehreibduronsehaltsignal at the output We generated and held by the output SL ^ duz-ohge8, bo daS a keep-through signal at the output WeO is obtained because of the called visualization matrix 202 (Fig. 7b), causing signals from the output WrO the data ear «ibs © attitude 201 to the called Data tube reaming heads, which are then written into the called up data track 2 * 0 «

The A.uf as is worthwhile in the data pure 2-0 during a writing operation begins with the request "introductory bit 131 (Fig. 6), these are read from the mark pure 2 * 0 and are available at the exit HeJD" which is switched to the ^{data writing circuit through the outputs DS 1} * and PAV in order to copy the introduction table and the synchronization bits 132 into the data track. When reading the corresponding synchronization bits 123 from the marking track, the data signal _? which are supplied by the central unit 10 via the Piattenspeloher ~ Steutreinhoit 12, applied to the input of the DatenschreibBOhaltung 201 and converted into self-clocked signals, which are in the data track 2 * 0 under Zei tga.be by the clock pulses coming from the marked pure C are to be written., Dur oh the output EoD * tron of the disk storage ** control unit 12 or the. "End of the data field" -Output ED? of the synchronization bit detector and counter 237 (FIG. 7a), the base bit holding period 240 (Fig. 7a) is divided in such a way that it generates an output PaL _{1 with} a high voltage level which looks through the clock signal C to the tail bit generator 241 ax Auegang PaG to generate the Soblußbltasignal. The latter is sent to the »input of the data editing

209811 / U21

10,6,1968

BATH ORIGINAL

circuit 20t (Pig «7b) is applied in order to write the SchluSbitB as a self-clocked binary signal in the data track 2-0 up to the end of the data segment. The end of the data sector is determined by the clock gap detector 239a (FIG. 7a), which supplies the output signal CgB, which is switched on by the output UhC * (from the controller unit 12), see above ⁿ that a sector at the end "-Auugangssignal EOR is generated to the writing dor tail bits by default the Schreibmatrij / fcna ^ tung 220 (Fig. 7a) ij

* a signal is generated with a high voltage level to interrupt, thereby em We output, reset the tail bit-Haltesehaltung 240th The Ausgangseignal Pall * the tail bit-hold circuit is applied to the Schlußbitgenerator 241 'whereby the latter is returned d approaches to a state in which he next Schlußbite with a g-bit begiaaHi what is necessary _c "data end" to Aas character / the -Create to the first signs of Sohlußbite in the data track 2-0, as in Pig. € approved,

In Mehreektoroperationen (concerning e "B. Dlt / Sectors 0-5) are naoh the sector 000 read or

Write operations in subsequent sectors as long as ™

continued until the sector counter 22? by Rüokkehr to a high Spannungepegel at the output BCO '<jiulIgest el It is> (in each sector after reading the Markieradreose when the Plattenapeioher-Steuereinlieit cooperating 12 with the Doppelepelchereinheit, d "h ₀ the output UHC * has pannuiigepeg high S" This generates an output signal NeO with a high voltage level which, together with a look-through output signal S? H with a high voltage level (see Euokstelloinput of the double unit function hold circuit 2ZB ₉ 2'ig * 7a), the read or Sohreiboperationen in the

209811/1421 '

June 19, 1968

104 of the double storage unit 100 is terminated by an output signal EFRO * with a high voltage level, <äaa is applied to the disk storage control unit 12 in order to hold a holding circuit of the priority duration 25? for the double storage units (Pig * 8), whereby the output UhC * level with high voltage (which means that the control unit 12 cooperates with the double storage unit) for the double storage unit 100 is interrupted. The EPR output signal with a high voltage level is only generated when the puncture of the double memory unit 100 in connection with the one or more data sectors (e.g. five sectors) to which the central unit 10 requests access has ended. As a result, a "sector end" feedback signal pulse output ESR is generated at the end of the individual sectors with the separation of the recording-free gap between them (output signal CgS with high voltage level) and output signal UhC *. In order to end empty operations earlier and thereby keep the time in which the double storage unit uses the control unit 12 as short as possible, the output signal ESR generates the output signal UhC *, EoD * which are suitable for output. Rd? and NeO with a high voltage level an earlier pulse «

If, instead of the disk unit 104, the other disk unit 105 of the double memory unit 100 is called up for reading or writing, the disk unit selection and hold circuit 223 (VIg. 7a) is set by the output signals Hol and Ud so that it has an output signal SL ₁ with a high voltage level generates "which instead of the signals ReO or WeO generates a read-through signal Re 1 or a friction-through signal We1 (FIG. 7b) in order to actuate the corresponding lee matrix 210 or the signal matrix 203,

209811/1421

June 19, 1968

thereby reading or writing data in any of the data lanes of disk unit 105. The signals coming from the marking magnetic head of the disk unit 105 are transmitted by the output signals LmE and SL ₁ in a corresponding manner as described in connection with the disk unit 104 and in PIg. 7b, held out.

Plate peloher control unit (Pifl. B)

The disk storage shown in Fig. 8 » Control unit 12 includes a buffer register 252 sum Controlling the transmission of data between the central unit 10 and the double-cell units 100 to 103 * The buffer register 252 receives and stores write data from the central unit 10 character by character in parallel (8 bits + parity bit) and transmits this data bit by bit serially via the data honor ible line WD » any of the double counter units 100 to 103 * where they called during Söhrelooperationen In a Data "ect or be paid for" "during read operations receives and stores the buffer register 252 data bit by bit serially from any of the double storage units 100 to 103 via the data » Ieββleitung RD * and leads this via lines BR1-9 seldom in parallel with the central unit 10 eu.

The buffer register is required for debugging operations 252, which can contain more than one register for storing a large number of cells, a data character from the central unit 10 after receiving a write * duroneehaltsignal »from the output We * of the called Double storage unit always on, if the control panel The information for the buffer register indicates that there is still memory space * for the character in this register. The tax owings Aee Buffer rage ie ter β 252 generate

19-6.1968 .209811 / 1421

a channel request signal CR, which is applied to the central unit 10 which, during the character transmission, generates θin 'response signal PAB (feedback from the central unit) which terminates the channel request signal CR fed, and after completion of the transmission, or, if additional registers are provided .Bind and an empty let, a channel request signal CR for the next character is sent to the central unit 10. The operations described above are repeated until the last one be The correct group of characters is transferred from the central processing unit to the buffer register 252. At this time, the CPU 10 transmits a sector termination signal PT. After the transmission of the last character for the Speloher plate sector from the buffer control 252 to the called double 1-Bpeioheinheit via the output WD *, "in signal is generated at output BRE (buffer register empty) and by the termination signal PT to the set" End of data ⁿ hold circuit 254 to generate a pulse at the output EoD *. This is fed to the called double memory unit (eg 100), as a result of which the write operation including the bottom bits is terminated, as shown in FIG.

* In Lts operations, the data transmitted bit by bit serially from the called double memory unit (e.g. 100) via the output Rd * are stored in the buffer register 252. After the last character bit has been received from the output RD * of the double paired unit 100 called up a KanalanforAerungosignal CR applied to the central processing unit 10 upon receipt of the un £ Ansprecheignais PAB is aiahen dos \ m Pafferfagieter 252 stored £

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character by character transferred in parallel to the CPU * The operation of the central processing unit 10 and the disk storage control unit 12, ie, "read or Sohreiban * is the Spannungepegel of one or other of the of the called double storage unit ~ kozomeß the signals Re _*? We * controlled «The control of the loading and unloading of the buffer register 252 (bit-by-bit serial) edblgfc by clock pulses C * and the control unit bit counter 253 supplied by the called double“ peloheinheit ”whose output signals CBOf -9 are applied to the buffer register BR "* The termination of the read operation is determined by the" end of character "character 134 *" which, according to FIG. 6, contains an OJ ^ -bitmueter in which the ninth bit (parity bit) has a 0 bit "to determine the" end of data ""-Zeionen * In a read operation, each line stored in the buffer register gate 252 is compared in the parity bit checker 250. If the combination of the O ^ -bit pattern with a £ ~ parity bit is set, then the signal is generated at the output Po" da * * n the "end of data" hold 254 is applied "in order to generate a signal with a high voltage level at the output BoD *, since * again, for example, the called double storage unit 100"! r pure data is switched to the marking * pure *

The disk storage control unit 12 is called up by the central unit 10 in order to send control information to the double storage units 100 to 103 below. The central unit 10 supplies the control information (characters) as well as timing signals JC1 and J $ 3 and load control impulses JC2 «A non-calibrated beginning ** t * u * rinformation * e * iohen goes to ffinf control information signs U ₉ p _t s, A, 9 ( Fig * 9) and contains the address of the record

20981 1 / U21

Control unit 12 "This address is thereby Steuereinheife 12 called by fan control" unit-Adressenentsehlüsseier 255 (Pig »8) is decrypted, and a Ausgangesignal CiL is generated with high Spannungepegel to the series of five charge control pulses JC2 from the CPU 10 to the timing * pulse counter 256 to hold. The output signals of the latter are applied to the Doppelepaicher-βinheiteη 100 to 103 in order to clock their call and control operations, as described above with reference to FIG returns to a low voltage level after the last of the pulses 702 to divide the control unit address descriptor 255 and the counter 256 back.

The five control information areas (FIG. 9) are transmitted bit by bit in parallel to the double storage units 100 to 103 via a control unit amplifier 257 (FIG. 8). Calling one of the latter and its plate units is duroh selectively applying this S expensive Informations of characters to the Doppelepeiehereinheiten 100 to 103 during the period of five Ladeeteuerimpulee JC2 · These are timed to DAFL they successive ones of the enteprechenden control information · zeiohen U, F _s S , A ₉ ti (Fig. 9) and are transmitted to the dual storage units 100 to 103 on separate outputs of the timing impulses 256. The pulses JC2 * are applied on a separate line to the double peioher units 100 to 103 and are given by the respective called Doppelspeleherelnheit, i * B «100» through the outputs USL ₁ - FL ^ (Fig. 7 «) durohg? aehalt, whereby Rüolooeldqualal · generated at the output UABO *

June 19, 1966

BATH ORIGINAL

These feedback signals apply to a dwell « circuit 258 applied, whereby an output signal CiH is generated with a high voltage level that "causes that the controller address key is 255 Maintains output signal CiL at a high voltage level, when the disk storage control unit 12 is called and through during the timing signal JC1 that timing signal JC3 is reset. Always then, when the double speloherelnheit function hold hold 228 (Pig * 7a) is set because, for example, the double storage unit 100 beaetst lot, the Impulse J02 * not, held durohgeeeh, to BÜckaeldqualale at output UABO * su generate, and the attempted calling of the double storage unit 100 is subjugated, if there are no backlinks for this unit arar dwell 258 (Pig. 8) are available ·

The regular function of the Plattenapeiöher-Steuerf Unit 12 consists in the implementation of a priority control for the data transmission from the double * storage units 100 to 103 »This priority control is required, including the first of the double winning units 100 to 103 call up the addressed data track and searches for the addressed sector, since a simultaneous calling of the double storage units 100 to provided, i.e. looking for the addressed track and the addressed sector on both sides occurs because control information is simultaneous to any or all of the dual storage units 100 to 103 independently of the data transmission or before "any" of these doubles comply has found the addressed Datenapur and the addressed JDa tens ector can be delivered can. The double storage units, which were flat in the previous section 100. to 103 generate a pulse at the outputs SeC0 «» 3 * corresponding address * ·· ■

19. (5 B

-. 48 ~

veirglelohsshaltuiigen, z “B. the

circuit 236 (Pig "7a), call the angasproehsns memory teil® (data track and Batensekior) found and the Doppelepeichereinheit is ready for lots or writing data _{D of} that pulse at the output SECO * Examples as input to the corresponding A te 11- <the Priority control 251 is applied for the Doppelpeiohereinheiten "in order to generate an output signal IThC * with a high voltage level in the corresponding one of the output lines UhC *" as shown in Pig, 8. The first to the setting inputs of the named

Priority control yen the outputs SeCÖ-3 * created® Pulse generates a signal with a high voltage level at the corresponding output UbC * and blocked on the other setting inputs applied signals

until the priority control 251 duroh a ⁿ Function End "* RüokBtellsignal rtiokgesteXlt is" that of the corresponding outputs EFRO - * the Doppelspeiohtreinheiteη was created 100 to 103 to the Rüolc- ■ telleingang The skidding partial signal from the outputs EFRO-third. * Tends to terminate the read or write function of the corresponding of the double storage units 100 to 103. Another function of the priority control 251 for the double storage units consists in the transmission of the identification number of the called double storage unit, flattening unit β and the control unit from output ID to the central unit 10. This Identification number is available if priority is given to a double storage unit, and the corresponding identification number is selected by means of a signal with a high voltage level at one of the outputs UhC *

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Claims (1)

Claims ι 1 «Magnetomotorleeheβ storage system, the circumferential magnetizable surface of which is provided with a large number of ring-shaped storage tracks, with a transmission device cooperating with the surface and a positioning device for moving the transmission device transversely to the storage tracks on at least one selected storage track» characterized in that »the transmission device (16) during their transverse movement of the Speieherspuren each transverse position of the transmission ^ ~ _Ä device indicating the track addresses - * ' derives signals * and that a control circuit is provided which, on the basis of these signals, causes the positioning « device interrupts the transverse movement of the transmission device when reaching the selected memory track (s). 2. System according to claim 1, characterized in that the Storage tracks from a number of data tracks and at least consist of a marker track from which the Spuradrecsensignalt are derived, and that the transmission device several Magnetic heads C106, 107a) have * those with the patent tracks resp. , the marking track work together. System according to Claim 1 or 2, characterized in that each data track or each group of data tracks is assigned a marker track. 4. System according to claim 2, characterized in that the Marking head (106) during its transverse movement and scanning of a Marking track supplies a track address signal indicating this track, before he is admitted centrally over the track, so that sumindeet a godhead (107a) is set centrally over a selected satellite track in that the transverse movement dtr transmission device after a track address signal indicating the corresponding marker track has been applied to the Control circuit is interrupted. , 209811 / U21 177AA31 5. Syetem naoh claim 4 »characterized in that Track address signals under the control of one by one Nookeη (18) controlled switch (18b) are held durohgeβeh said nooke η (18) being driven by a motor (8za) which also controls the transverse movement of the transmission device causes, and the switch (I8b) the individual lane address signals read from a marker track by -8 Hold before the marking head the center of the marking track has reached· 6. System according to one or more of the goal-related claims, daduroh characterized in that the control circuit is a comparison circuit (235) which compares successive track address signals with a desired address signal which su control information signals heard from an external Source are applied to the control circuit, which after a positive comparison dit interruption of the transverse movement of the Transmission device causes. 7 · System according to one or more of Claims 2 to 6, characterized in that there are pure pounds of clocks in the markers binary synchronization signals (122 to 126) eepeiohert Bind, the naoh sampling clock pulses to synchronize the writing generate data in the data track * 8. System naoh one or more of claims 2 to 7, daduroh that the individual sowing and marking tracks in several addressable baton memory sectors (110 to 117) are subdivided so that the individual marking tracks sector address signal eptiohern, and that one device one after the other unites determined · able to call up the number of sectors based on externally applied signals. June 19, 1968 209811 / U21 177U31 9. System according to one or more of the preceding®: »Claims, characterized in that the transmission device has several " Data headers (107a to 107k) each contain a timed a corresponding group of data tracks to be scanned. 10. System according to one or more of the preceding claims, characterized in that the magnetizable surface (15) a plate (14a) is provided. 11. System naoh claim S _9, characterized in that several individual magnetic plates (14a, 14b, 14c) are provided which form a plate unit (14) which in turn is removably mounted on a drive shaft (15), 12a system according to claim H _1, characterized in that a plurality of such disk units (14) each belong to a HehrpXa-itenspsieheinheit (100 to 103) which contains a circuit with read and write positions, which bind all disk units of the multi-disk disk unit together., 13 * System according to claim 11, characterized in that there is a Control unit (12) which supplies address signals? Le to a plurality of disk storage units at the same time, where sine Priority control device (251) to locate the first disk unit the desired address selects » 19.6.196Θ . _; .: 209811 / U21 bad Lee r side