Patentamt JEuropaisches European Patent Office Office europeen des brevets EUROPEAN PATENT SPECIFICATION (11) Publication number: 0 068108 B1 Date of publication of patent specification: 08.03.89 Application number: 82103878.3 Date of filing: 05.05.82 IntCI.4: G 06 F 11/22 System and process for diagnosing and correcting errors in a remote data processing equipment. Priority: 30.06.81 US 280023 Date of publication of application: 05.01.83 Bulletin 83/01 Publication of the grant of the patent: 08.03.89 Bulletin 89/10 Designated Contracting States: BECHDEFRGBITLINLSE References cited: US-A-4057 847 THE EIGHT ANNUAL INTERNATIONAL CONFERENCE ON FAULT-TOLERANT COMPUTING, Toulouse, France, 21st-23st June 1978, pages 24-28, IEEE, Piscataway, US; R.S. SWARZ: \"Reliability and maintainability enhancements for the vax-1 1/780\" IBM TECHNICAL DISCLOSURE BULLETIN, vol. 22, no. 3, August 1979, pages 1129-1130, New York, US; B.B. MOORE et al.: \"Dumping of inaccessible handware storage areas\" Proprietor: International Business Machines Corporation Old Orchard Road Armonk,N.Y. 10504 (US) Inventor: O'Quin II, John Thomas 2700 Harrowden Drive Austin Texas 78758 (US) Inventor: Vossman, Robert Anthony 4209 Gnarl Austin Texas 78731 (US) Inventor: Wood, Rebecca Sue 9817 Brandywine Circle Austin Texas 78750 (US) Representative: Bonin, Jean-Jacques Compagnie IBM France Departement de Propriete Intellectuelle F-06610LaGaude(FR) References cited: HEWLETT-PACKARD JOURAL, September 1979, pages 13-16, Palo Alto, US; D.L NELSON: \"A remote computer troubleshooting facility\" CO GO o 00 <0 o o Q. LU Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been European patent convention). paid. (Art. 99(1 ) Courier Press, Leamington Spa, England. EP 0 068108 B1 Description terminal, between This invention relates to a transmitting and communication of data a remote system the wherein communicated data and more particularly, it relates to receiving is used for a condition which exists in purpose of diagnosing at vice a remote location where a and data correcting an error engineering processor and located ser- tion support necessary to correct the error condi- may its The data not offspring, processing technology together be available. the word processing technology, with Where have been cessors needing servicing ten years ago rapidly expanding the number of data in recent years. pro- measured in processors thousands, at in the United States the present time, was the measured in the hundreds potentially requiring service are near future, of thousand and in the advancement, In addition, there will be millions. cessing data because processing of technological processor fields and word pro- combination of the is actually going are ones in which the cost of the data together processing and word relatively down. Because of the low selling prices of units been potentially requiring with the greatly expanding processing units, service, number of wherein requirements seeking and methods of the field has particularly reducing servicing actual service calls travel and visit the site where the data a service engineer or technician has to or it. word processing unit is located in orderto processing repair service call Many of the expedients available for avoiding a a ment considerable may period be time consuming, i.e., requiring Systems which renders the of down time for the equip- for diagnosing approach undesirable. the in remote and/or correcting errors in R. S. SWARZ article entitled art. Illustrations of such data processing systems are systems can known in be found maintainability \"Reliability and 780\enhancements for the VAX-11/ Conference in the Eight Annual International Toulouse, France, on and in US-A-4 057 857. Both documents disclose 21-23 June Fault-Tolerant 1978, pages Computing, 24-28, systems facilities from providing for tests and error processing equipment, conditions a servicing developed location to or diagnosis simple means but none in diagnose of a t remote data after the diagnostics for quickly correcting hem discloses have been carried-out. the errors in claim The system avoids 1, offers of the an approach present invention which as not only claimed problem costly service calls to correct error or processing equipment conditions in data processing or word rapid. data In fact, but in addition is quite fairly remote processing equipment in many cases, is particularly at a where the center, many the system from the nearest available location which is servicing shorter time problems and of this invention error conditions in can a correct costly service call. period than that required forthe much more operates The present that data in the invention involves following manner. a Let system which 5 ment develops an error or problem in a processing or remote location, word e.g., processing equip- us assume Naples, Italy, ance cessor with the present invention, condition. In accord- the remote pro- storage has associated therewith, 10 included means such as disks or diskettes. Further magnetic media diskettes, are means data representing for recording on the status such disks or condition. In other or portions thereof under this of the data processor error means words, the processor has 15 kette. for providing a data dump onto the dis- transmission Associated with this remote data processor is data stored means, on means said for magnetic transmitting media the status 20 personnel are Let us assume i.e., the data stored on said dump diskette. storage in Thus, Naples, Italy, they are not available at that while data processor service available in the remote location means the invention further includes Austin, receiving Texas. 25 e.g., data and in Austin, distant from said remote data Texas for receiving said transmitted processor, means storage for means reconstructing associated with the receiving diskette communicated from containing said status data, the magnetic e.g., the media dump 30 structed in Austin, Texas and is Naples is recon- diagnostics we in Austin. Thus, in a matter now available for of minutes, which have available in Austin, the dumped diskette the processor a service for his engineer diagnostic would have gotten out of 35 travelled purposes if he in Austin have associated therewith The receiving location, i.e., to Naples. the receiving means providing an error means disk. After the correction storage diskette for 40 by error condition has been diagnosed or particular normal equipment, data diagnostic methods associated with diskette. In these processing or word processing for 45 diskette. The transmitting addition, means produce a the data there are transmission correction means associated therewith remote location, i.e., on this correction disk or ing receiving means Naples for receiv- has means the data diskette for on reconstructing the correction disk the error or diskette and so available for the or disk whereby correction words, remote data the disk or diskette is diskette in upon the reconstruction of the correction processor. In other diskette Naples, the data contained on this to correct may be loaded into the remote processor 55 diagnosed the and error condition which has been embodiment of the invention is illustrated, and Referring now repaired to drawings, in Austin. wherein a preferred wherein like reference numerals out to designate are used through- 60 apparatus Fig. 1 is a logical like parts; block diagram showing present which may be used in the practice of the in the receive Fig. 2 is invention. a logical 65 used in combination with the formatting system block diagram of the which logic may used be Fig. 3 is a flow chart showing logic the shown in general Fig. steps 1 . EP 0 068108 B1 involved in dump recording a machine status or data Fig. onto 4 is a a flow chart of the operations diskette. of the apparatus recorded during the sending of the data involved in the Fig. 5 on is the a flow chart dump diskette. dump in accordance diskette operation initiation and queueing of the general steps which is then carried of the in 6 is flow chart of with the flow the chart of operations Fig. involved 4. out Fig. a kette at receiving remote data transmitted from another dis- a With reference to Fig. 1, diskette at location and reconstructing the receiving the system location. the data onto a of the present aspect munication of the invention will be described. As a major between two data present invention involves processors or word com- processors the invention remote with respect to will be and distant from each other, Fig. 1 which for described and illustrated purposes of the word present illustration will consist of two identical example, processing work stations or terminals. For and the second the first In addition, work station work station 11 will be in Naples will diagnose error assume for 10 will be in Austin. that service purposes support of this illustration, we available in that Naples and but is problem to correct and available in conditions Austin and is not occurs an error cessing in Naples. or problem Each of in the word processor station which work stations is the two word pro- with the has been a display modified in terminal accordance work described in present assume detail. Since invention the as will be hereinafter in tional units Naples, we to occur has occurred problem in work which station 11 we in the will describe primarily Naples work station the func- 11. How- ever, exist in word processing it is to be understood that identical units Austin. work station 10 in of these After we describe the standard functions describe various specific work stations, units necessary we will to proceed to will also operations carry out the series of flow cover the functions of the present invention and Now, with. reference to Fig. 1, charts. of these units in a work stations 10 and 11 communication communicate Each of the adapter terminals link 12 with each other over a includes represented a by a bus. to adapters communication link 14 and 114, each 12. The respectively communications communications connected capability, may parallel at the be transmitting any standard device having end, of communicated to serial data receiving over external lines and, so that the data converting may\" be data into end, parallel for at the form reconverting so that it the received serial may be handled by munications the receiving display terminal. These com- detail since adapters will not be described in invention which they are not involved in the present transmitted and it is received at how transmitted is directed to how the data is the receiving data is handled once tion link 12 The mode which of communication represents a over terminal. link between communica- the two cation. The terminals is used in the communication a synchronous adapter serial which communi- can be 5 in present invention is described in detail assigned European patent application No. 82103174.7 tion. For to the assignee tions adapter, of describing of the the communica- present applica- purposes 10 operations by reference. In addition, said application is hereby the incor- porated 82103331.3 assigned forth in of the European patent display terminals 10 and 11 general to the assignee application is set of the No. present invention hereby incorporated by ref- erence. is chronous While this the invention protocol application uses an asyn- uses a for communication synchronous while the present will be substantially general operation of the display terminal protocol, logic 20 the The following description the same. made with respect to applicable second work station 11 is also substantially station 11, to the first work station 10. In work through operator the operator The keyboard drives control accesses the machine a processor keys on a keyboard 16. The 15. 25 cessor pro- display 16 is 17, a operably diskette 18, interconnected into and a random a access visual memory is 19 via memory bus 20. A system clock 21 station 1 provided 30 station 11 1 for the . The information timing functions within work in Austin is serially in Naples to remote display transmitted from work communication link 12 from and synchronously terminal 10 communications sent over adapter serial to 14. Communications adapter 114 does a 35 sends it parallel conversion of the input data and means received data and displaying 119 which over a memory has the capability bus 120 to memory it at of some storing subse- the quent data time. Memory 119 includes a number of 40 with the data areas and functional programs for operating communications input into it through bus 120 from of work station Memory 19 of work adapter station 11 114. cal in structure 10 which are substantially and memory identi- 119 45 expedients contain all of the programming word processing and routines work stations necessary 10 and 11. to operate The operations larly of described with respect many of these to the display expedients, particu- function is so tioned in greater detail in the above men- the functions In addition, the expedients required application No. 82103331.3. of the present invention to carry are also out these will respectively included in memories 19 and 119 and 55 of the two now be described in greater detail. Each send formatting memory units 19 and 119 contains the dashed lines receive formatting of system memory 22 shown within the the send formatting system 19, Fig. shown in 1B and the eo only shown with and receive Fig. 2. Although respect format- ting systems are stood that 19 in work station 11, it is to be under- to memory station 10 also memory and receive formatting contains 119 of word processing es sidered in The logic connection shown in systems. identical send formatting Fig. with the data handling 1 will now be con- EP 0 068108 B1 processors in connection with the flow which will be subsequently described through the 6 charts of Figs. 3 word Let present in order to illustrate how the system of us assume invention that the operates. operator an error processing work station 1 1 in is Naples operating on when incapable condition ther assume of that the diagnosing develops. problem his problem. The operator exists Let us fur- is memory erence 19 of work station 11. Then, with some place in dump to keyboard or switch. This is Fig. 3, step 22, the operator presses ref- the station 1 in 1 which elsewhere in word merely a starts the dump procedure processing switch on shown work the of Fig. 3 which results in the status of every bit in all onto or dumped or a selected portion routine will onto a of memory 19 being stored dump giving provide on a diskette. In other words, of the status of every diskette bit in a \"snap shot\" the a selected portion of the memory at the time that memory 19 dump error condition arose. The operator presses the switch 23, Fig. IA which communicates with stored in read processor 16 to activate the means dump. only store (ROS) a conventional routine unit 33 resulting in the such Because data as disks or diskettes dumps are well known in onto storage such art, dump a processor routine stored data any conventional dump may be used. expedient In for any conducting event, the ROS 33 to 6 over line 24 and communicated in ROS 33 is activated from from results in the status of memory 1 19 via bus 25 and bus 20 which 19 the total context of memory bus 20. being dumped or loaded upon a diskette 18 via dumped As each unit and section of memory 19 is 3) is made upon the as to diskette whether the 18, a decision dump is step 27 (Fig. dump dump assigned is not complete, an is complete, the routine is ended. complete. If address If the memory for the particular portion on the diskette is data indicative of the status 1 9 stored on diskette 1 8, step of the status of 28 and more written onto the diskette, step of memory 19 is refer At this of to as point, the dump the status diskette 29. which we will queued memory 19 during diskette the error reflecting condition is to be the status station 10 in Austin for transmission to word support or problem available in Austin so that the service processing work may diagnose engineering the error the With reference dump diskette condition. In order to must be queued accomplish this, for is queueing queued. to Fig. 5, step 30, the dump sending. diskette in which is under the control of key stroke service routine, block routine \"Send Queue Manager\" This is carried out under a standard 50 of Fig. stored 1 B block 51. key stroke control the communication start command, The next command in the sequence of Fig. activates the communication step 31, 5 is which in method 34 via bus turn activates communication monitor 37, Fig. 1B, which 5. At this i.e., point, system 35, as set is ready to forth in step 32 of access Fig. work station 10 in Austin. transmit the dump disk Operator to word communicate, must processing establish communication linkage matter\" routine is called, 12. Then, the \"Send For- Formatter\" routine is shown step in Fig. 36. This \"Send 5 formatting system Formatter\" routine is carried out by 4. This \"Send of the \"Send Formatter\" routine shown in Fig. 1 the send . The operations described with 10 First, respect using to the the operational operations flow chart of will now Fig. be 4 . transmitted step 38, the prefix for the data elements of Fig. 1 \"Send Formatter\or sent is generated. stream to be communications and This is done in the buffer 40 15 sector as shown in access passed to the step method 34 via the send access is read from the diskette 41. Next, step 42, a 45, a method 43 into read buffer 44. Then, 18th rough diskette added header which contains control instructions is step the sector is to the sector in the read buffer, after which 20 method 34 in accordance passed to the communications access communications through access method sends the data with step 46. Then, the adapter the link buffer 48 to the communications sent 14 through which data on the diskette is 25 munications over communication processing adapter 114 linkage at the receiving 12 to the word com- whether the entire Next, a determination is made, work station 10. step 47, it has 30 and the next sector is read. not, the operation dump is branched back to diskette has been sent. If as to complete, If the operation step 42 is word point, complete dump then the transmission ends. diskette has been sentto the At this location where the processing work station 10 at the remote 35 nosed. dump diskette is to be diag- data of which has been The reconstruction of the dump diskette, the be described with station 10 in Austin. This respectto just transmitted will now 40 receive shown in formatting system is carried out word processing work the using a formatting system Fig. 2. It should be noted that the receive logic of which is tion monitor 37 and controlled is attached to the communica- similar to the send by it in a fashion 45 present 11 embodiment, each of workstations 10 and formatting system. In the shown in contain both the send system present shown in Fig. 1 as well formatting system 22 Fig. as 2. For the receive purposes formatting of the 50 formatting system illustrative communication, the considered in in work station 10 is receive being from work station 11 Fig. 2. When the data transmitted reaches the communication as previously station 10, a data adapter 114 in work described 55 This results in the receive formatter interrupt occurs, step 52, Fig. 6. 2 system of Fig. the receive formatter being called, step system, step 53. A decision is made 54, as to in the has been complete 60 and received, diskette has been received the transmission is as yet. whether If it kette. If the we now have a complete reconstructed dis- completed routine ends. If the complete disk has been received, the received complete disk has not been method 55 fetches as yet, then the communication 65 been received the section of data which has access in the receive buffer 57 from the link buffer 56 and (step 58 in Fig. 6). places it EP 0 068108 B1 8 formatter of At this point a block 59 decision is as to whether this is made in receive the beginning beginning of 59 of a job or a job or function function, (step then the 60). formatter If it is the 61). processes This involves the previously an initiation described step prefix (step ity end, with its equivalent medium at checked the for wherein the receiving disk medium is transmitting compatibil- reconstructed at e.g., since the the disk receiving or diskette is to end, be 10 has In addition, equivalent structural end is properties checked to the such see disk medium at the receiving if it whether there a determination is are made as size. any optional as to displayed on be retrieved from the prefix information messages to and 15 word processing the display station. Next, terminal of the receiving after the prefix has been 62 is carried out processed or header in formatter 59 if it is not the start of a job, step sector 20 buffer 64 communicating is written on the disk is on removed. Next, and the sector the disk through step 63, next method 65 which with the diskette the write access bus 120. in turn accesses disk 118 over This procedure is continued until the data 25 representative processing recorded work station of the dumped diskette 118 in remote 11 diskette is received and from word on a word cessing pro- station 10 work station 10. a complete We reconstruction now have at of the work 30 dumped diskette is diskette now formed at sonnel at the work station which the available for work station 11. This service any 1 0 location engineering conventional diagnostics carry out may wish per- to 35 or either using word processor station 10 problem Because any other diagnostic equipment. detection is diagnosis of data an extensive dumps for and varied error and technology application and is dependent on condition, we involved in the will not processor the nature of the here having the 40 error which any on be used particular on the data diagnostic attempt technique to suggest may In the reconstructed diskette at dump work station contained 10. work station 10 any event, service 45 nostic same had techniques using which would suitable engineering conventional personnel at be diag- directly they been available at with the original work station essentially the dump diskette 1 1 to now proceed deal lem. to diagnosis and correct the prob- so provide Upon correction diskette. This at work station of the problem, they 10 an initial correction may now status in which the condition correction for all or diskette any part may of provide a 55 kette when error occurred. This correction dis- memory 19 station 11 made available to memory 19 in work 19 and, thus, permit will correct the error work station 11 condition in memory in Naples correction to resume normal operations. The initial 60 station 10 diskette made in work station 11 in Austin may connection with work data transmitted from in Naples now be transmitted to work station 10, and based upon the 11 can reconstruct the word processor work station the 65 correction diskette tion of the correction status and make into it available memory for inser- 19. tion Transmission of station 11 diskette formed at the data work station on the initial correc- 10 to work procedures may mission of set be carried out using the same work station 11 the data forth hereinabove on the dump for the trans- diskette from transmitted to work station 10. The data thus structed may be rerecorded on a recon- tion diskette Naples which is correction a full diskette at work replica station 11 in The unloaded into reconstructed formed at of the initial correc- correction work station 10 in Austin. the error status and permit work station diskette work station 11 when memory 19 at will correct 10 to resume its diskettes have In the present normal operation. been used to application, the terms describe magnetic disk and storage been used in media. However, only in its the claims wherein the term the term disk has is used disks and generic sense diskettes. to cover both conventional Claims 1. A system for diagnosing and errors including: in a remote data processing equipment correcting a remote data processor (11), ciated with said remote first magnetic media storage data means (18) asso- storage means, means (23, 33, 24, the data data 16) representing for recording on processor, the status of said first said remote first transmission means processor under an error (12) associated with condition, status and data stored data processor on said first for transmitting storage means, said data first receiving means distant from said remote data, processor for receiving said transmitted characterized in 56, 57, 59, second magnetic that it media comprises: storage means (37, 55, means 65) associated with said first receiving containing for duplicating said first storage means cated said status data, whereby said dupli- ciated third storage with magnetic means said media is available first storage for diagnostics, receiving means asso- means for tics recording an error correction after said the data second transmission means are carried out, diagnos- recorded on said third storage means, for transmitting remote second receiving means recorded data for associated with said processor receiving the data ciated with fourth on magnetic said third storage means, and duplicating said remote media storage data processor means asso- for said processor. error correction is available said third storage means, for said whereby data that said remote 2. System according to claim 1 characterized in word data processor is a first display means processor are included in (11), and said a second first display receiving word EP 0 068108 B1 10 for processor errors 3. A duplicating (10) which process said further includes said means for status diagnosing data. steps in a remote data processor and comprising correcting the means, recording on of: first magnetic media storage remote data representing the status of said and data processor under an error condition, storage transmitting from said means said status data stored on said first characterized remote to first receiving means distant processor, first netic media duplicating storage means said by the status steps data of on second mag- status receiving means, whereby associated with said said duplicated second diagnosing data is available for the error diagnostics, condition from said media recording an error storage means, correction on third magnetic receiving means storage means out, after said associated with said first diagnostics are carried storage means transmitting the data stored in said third ciated with said remote data to second receiving means asso- magnetic duplicating processor, and said media said third storage means storage means on fourth data, whereby remote data processor from said transmitted associated with for said remote said data error processor. correction is available Patentanspruche Fehlern in einer 1. System zur Diagnose stung, Datenfernverarbeitungsausru- und Korrektur von ein Datenfernprozessor zu der gehoren: (11) (18), das ein erstes gehort, zum magnetisches genannten Medienspeichermittel Datenfernprozessor des Mittel (23, darstellen, Datenprozessors 33, 24, 16), um Daten, bei einer die den Status einzulesen, in das genannte erste Speichermittel Fehlerbedingung genannten ein erstes Obertragungsmittel (12), mit dem die Datenfernprozessor verbunden, um senen genannten, Statusdaten im ersten Speichermittel eingele- zu ubertragen, und getrenntes ein erstes, vom genannten Datenfernprozessor genannten ubertragenen Daten, Empfangsmittel zum Empfang der weist: dadurch gekennzeichnet, dass es weiter auf- tel (37, ein zweites ersten 55, 56, 57, 59, 65), magnetisches Medienspeichermit- genannte Empfangsmittel verbunden, mit dem genannten um das ten erste Speichermittel mit den Statusda- doppelte Speichermittel zur Diagnose verfugbar zu verdoppeln, wodurch das genannte ver- wird, mit dem ein drittes magnetisches Medienspeichermittel, nach der ersten Empfangsmittel verbunden, um zu registrieren. genannten Diagnose Fehlerkorrekturen ten ein zweites Obertragungsmittel, gen, Speichermittel registrierten Daten um zu die im drit- Ubertra- 5 zessor ein zweites, mit dem genannten verbundenes Empfangsmittel, um genannten Datenfernpro- die vom Daten zu empfangen, dritten Speichermittel gespeicherten 10 tel, ein viertes magnetisches Medienspeichermit- und verdoppeln, bunden, um mit dem das genannten Datenfernprozessor ver- tur wodurch die genannte genannte dritte Speichermittel zu Fehlerkorrek- wird. fiir den genannten Datenprozessor verfugbar 15 zeichnet, 2. System nach erster Darsteilungs-Wortprozessor dass der genannte Anspruch 1, Datenfernprozessor dadurch gekenn- ein das (11) ist und dass Darsteilungs-Wortprozessor genannte erste Empfangsmittel in einen zweiten 20 des weiteren das der genannte Mittel (10) integriert zum Verdoppeln ist, der in einem 3. Verfahren genannten Statusdaten aufweist. Schritte gehoren: Datenfernprozessor, zu zur Diagnose und Fehlerkorrektur dem folgende 25 genannten Registrieren von Daten, die den Status des gungen tischen darstellen, Datenfernprozessors auf einem bei Fehlerbedin- ersten magne- 30 Speichermittel Ubermitteln der auf dem Medienspeichermittel, und einem gespeicherten genannten Statusdaten ersten genannten ersten Empfangsmittel, durch Datenfernprozessor das raumlich zu getrennt von 35 einem zweiten Verdoppeln folgende der Schritte ist, genannten gekennzeichnet: Statusdaten auf tel, magnetischen Medienspeichermit- tel der mit dem genannten ersten Empfangsmit- pelten verkniipft ist, Statusdaten wodurch die zur Diagnose verfugbar genannten verdop- sind, 40 genannten Diagnose zweiten der Speichermittel, Fehlerumstande aus dem genannten Registrieren genannten dritten einer Fehlerkorrektur auf dem magnetischen, mit dem Medienspeicher, ersten Empfangsmittel 45 gnose ersteilt nachdem die genannte verbundenen Dia- fangsmittel, mittel Ubertragen wurde, gespeicherten der im genannten dritten Speicher- prozessor das mit dem Daten genannten an das zweite Datenfern- Emp- 50 tels auf einem vierten Verdoppeln verbunden des genannten ist, und dritten Speichermit- chermittel, magnetischen Medienspei- zessor das mit dem genannten Datenfernpro- tragenen verbunden Daten, wodurch die ist, mittels der genannten iiber- 55 fiigbar rektur fur den wird. genannten Datenfernprozessor ver- genannte Fehlerkor- Revendications 60 d'erreurs dans 1. Systeme pour le diagnostic et la correction donnees un eloigne comprenant: un equipement de traitement de 65 (18) des processeur premiers moyens de donnees eloigne (11), eloigne, associes audit processeur de stockage magnetiques de donnees 11 EP 0 068 108 B1 12 lesdits premiers des moyens (23, 33, 24, 16) nees representant I'etat dudit de pour stockage, enregistrer processeur des don- sur moyens de don- nees lorsqu'une associes des premiers condition d'erreur se produit, audit moyens de transmission (12) pour transmettre processeur lesdites donnees de donnees eloigne d'etat stockees sur des lesdits premiers moyens premiers moyens de de reception stockage, distants et dudit voir lesdites donnees processeur de donnees eloigne pour rece- caracterise (37, 55, 56, 57, des seconds en ce moyens qu'il transmises, comprend: 59, 65) associes de stockage auxdits magnetiques premiers moyens donnees de d'etat contenues reception pour dans lesdits premiers reproduire lesdites moyens desdits de stockage, fins de la de stockage le contenu mise etant ainsi en oeuvre de reproduit moyens ce fait disponible aux de procedures ques des troisiemes de diagnostic, moyens de stockage magneti- tion associes auxdits apres pour enregistrer premiers moyens une correction de d'erreur recep- diagnostic, la mise en oeuvre desdites procedures de transmettre des seconds les donnees enregistrees moyens de transmission sur lesdits pour troisiemes audit des seconds moyens de moyens stockage, de reception associes voir les processeur de donnees eloigne pour rece- siemes des quatriemes moyens moyens donnees enregistrees sur de stockage, et lesdits troi- associes audit processeur de stockage le contenu de donnees magneti- ques eloigne pour reproduire desdits troi- siemes moyens de stockage, ladite correction d'erreur etant de donnees. de ce fait mise a la disposition dudit processeur ledit caracterise en ce 2. Systeme selon processeur la revendication de donnees eloigne 1 que est un premier visualisation (11) et en ce dispositif de traitement que lesdits de texte premiers avec moyens de reception sont inclus dans un (10) qui comprend en de texte outre lesdits avec visualisation second dispositif de traitement moyens de reproduction d'erreurs 3. Procede desdites donnees d'etat. comprenant dans pour le diagnostic et la correction enregistrer les un sur etapes processeur de donnees eloigne les suivantes premiers consistant moyens a: de 10 stockage magnetiques I'etat qu'une dudit des donnees representant transmettre condition processeur d'erreur de donnees eloigne lors- 15 aux premiers lesdits lesdites moyens premiers moyens donnees se produit, d'etat et de reception distants de stockage enregis- trees sur dudit processeur a: caracterise eloigne, par les etapes suivantes consistant 20 seconds reproduire lesdites donnees d'etat sur lesdits cies auxdits premiers moyens de stockage moyens magnetiques de fins de la mise etant reception, asso- en oeuvre de ce les- dites donnees d'etat reproduites fait disponibles aux de procedures 25 dits seconds diagnostiquer de diagnostic, la condition d'erreur troisiemes enregistrer une moyens correction de stockage, a partir des- d'erreur sur lesdits associes auxdits moyens premiers de stockage magnetiques 30 apres la mise en oeuvre desdites moyens procedures de reception de diagnostic, troisiemes transmettre moyens les donnes enregistrees sur de stockage aux seconds lesdits moyens 35 de donnees eloigne, de reception reproduire le contenu et associes audit processeur desdits troisiemes moyens de stockage magnetiques de stockage sur les associes audit quatriemes moyens seur proces- 40 transmises, de donnees eloigne depuis mise a la disposition ladite correction dudit processeur d'erreur erant lesdites donnees de donnees ainsi eloigne. 45 50 55 60 65 EP 0 068108 B1 (\"call send formatter ) GENERATE DATA STREAM PREFIX .38 PASS PREFIX TO COM ACCESS METHOO ^41 • READ A SECTOR /42 1 1 ' 1 ADO HEADER TO SECTOR 1 ,45 -i » PASS SECTOR TO COM ACCESS METHOO -46 47 JL VImsrettNs no
