WO1996037864A1 - Systeme et procede de gestion de temps pour dispositif de diagnostic d'anomalie dans un vehicule - Google Patents
Systeme et procede de gestion de temps pour dispositif de diagnostic d'anomalie dans un vehicule Download PDFInfo
- Publication number
- WO1996037864A1 WO1996037864A1 PCT/JP1996/001366 JP9601366W WO9637864A1 WO 1996037864 A1 WO1996037864 A1 WO 1996037864A1 JP 9601366 W JP9601366 W JP 9601366W WO 9637864 A1 WO9637864 A1 WO 9637864A1
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- WIPO (PCT)
- Prior art keywords
- time
- failure
- controller
- standard time
- controllers
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
- G06F11/1691—Temporal synchronisation or re-synchronisation of redundant processing components using a quantum
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
- G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
Definitions
- the present invention relates to time management of a vehicle failure diagnosis device, and more particularly to a time management system and method of a vehicle failure diagnosis device for managing a standard time between a plurality of controllers in an industrial vehicle failure diagnosis device. . Background technology
- a vehicle failure diagnosis device in which the CPU of each controller performs a failure diagnosis on each controller, and displays a result of the diagnosis to facilitate the diagnosis.
- Japanese Patent Application Laid-Open No. Hei 4-304589 proposes a vehicle failure diagnosis device as shown in FIG. According to this proposal, the electronic control unit of the vehicle includes a master controller 1 and a plurality of controllers.
- Master controller 1 and each controller consist of a system with a CPU at the core.
- Each controller is responsible for controlling each component of the vehicle.
- a signal such as a switch is input, and a control signal such as an operation is output based on the signal.
- each controller has a failure detection unit that detects a failure in the connected sensor factory. The failure data detected here is constantly transmitted to the master controller 1 via the communication network 10. Sending.
- the master controller 1 comprises a CPU 2, a network interface 3, a memory 4, an operation switch 6, a display 7, and the like.
- the memory 4 is a memory for storing calculation results, communication data, failure information of each controller, and the like.
- the CPU 2 always receives failure data from each of the controllers 11a, llb, 11c,... ⁇ 1n using, for example, a polling method, and detects a failure in a failure item of the received data. Check whether there is any bit with "1" written to indicate that it is. If there is a bit in which "1" is written, the error code corresponding to the failure item of this bit is written to a predetermined storage area in the memory 4 and the time elapsed since the failure occurred is recorded. Write to a predetermined storage area.
- the predetermined storage area in which the error code and its elapsed time are stored is in the form of a failure history stored in the order of occurrence time. That is, error codes and their elapsed times are stored in the predetermined storage area in the order in which they occurred, and after a predetermined number of error codes have been stored, the error codes are returned to the head address of the predetermined storage area and stored. In this way, the oldest error code and its elapsed time are updated to the latest error code and its elapsed time and stored. In addition, each elapsed time is updated at a predetermined time (for example, one hour) after the occurrence of the failure, to the elapsed time up to that time. In addition, when the operator investigates the cause of the failure, the operator can operate the operation switch 6 to display the previous failure history on the display 7. By analyzing this failure history data, the cause investigation can be performed in a short time.
- each controller has a running integrated clock or a time clock, etc., and the fault data and input / output signal status at the time of the fault occurrence, and the time at which the fault occurred and the time at which the fault occurred using these clocks. The elapsed time and the like are stored in the memory in each controller.
- the stored failure history data and the progress of the state of the input / output signal are transmitted in response to a request from the master controller 1, and failure analysis can be performed by the display 7 or the like of the master controller 1.
- the running integrated clock of each controller operates only while the power of each controller is turned on.
- the controller power may be turned off individually for failure or inspection of each component, or the controller used for a certain period may be removed from one vehicle and mounted on another vehicle.
- the running integrated clocks of the disconnected controller and the newly installed controller are different from the running integrated clocks of the other controllers and the master controller 1.
- the above-described operation integrated clock and time clock have clock errors between controllers due to variations in time measuring elements and the like.
- the present invention has been made in order to solve the problems of the prior art, and eliminates a time inconsistency and an error between controllers, thereby enabling a vehicle failure diagnosis that can reliably perform a failure diagnosis with an accurate time. It is an object of the present invention to provide an apparatus time management system and method.
- a vehicle failure diagnostic device comprising: a sensor and a plurality of controllers that detects at least one failure of an actuator and transmits the detected failure data via a communication network; and a master controller that receives the failure data.
- the master controller sends the measured time to multiple controllers as standard time,
- the plurality of controllers determine a time related to failure diagnosis based on the received standard time.
- the master controller may include a standard time measuring means for measuring a standard time, and a controller for transmitting the standard time to a plurality of controllers via a communication network.
- each of the plurality of controllers updates the standard time stored in the standard time storage means based on the standard time storage means for storing the standard time and the standard time received from the master controller, and when a failure occurs, A controller for determining a time related to the failure diagnosis based on the updated standard time.
- one of the plurality of controllers is used as a master controller, and the standard time (main standard time) measured by the master controller is transmitted to each controller via the communication network.
- Each controller updates its own sub-standard time based on the received main standard time.
- each of the plurality of controllers may include failure information storage means for storing at least one of a failure occurrence time and an elapsed time obtained based on a standard time and detected failure data.
- each controller can store the occurrence time and the elapsed time obtained based on the sub-standard time when the generated failure data and the like are stored in the failure information storage means. Therefore, by referring to these failure data at the time of failure diagnosis, there is no error or inconsistency in the failure occurrence time between the controllers, and the time can be recognized correctly. Becomes possible.
- each of the plurality of controllers has a vehicle state storage means for storing a signal input state from the sensor, a signal output state to the actuator, and an input / output state occurrence time obtained based on a standard time. Is also good.
- the controller stores the vehicle state data together with the occurrence time obtained based on the sub-standard time, in addition to the above-mentioned failure data, at the time of occurrence of the failure and at every predetermined cycle.
- each of the plurality of controllers may include an exchange time storage unit for storing the exchange time of the controller itself obtained based on the standard time.
- the replacement time is obtained based on the main standard time, and this is stored in the replacement time storage means. This makes it possible to refer to the replacement history of each controller at the time of failure diagnosis, which facilitates diagnosis. With this configuration, the same operation and effect can be obtained when a used controller is mounted on a new vehicle or when another used controller is mounted on a used vehicle.
- a plurality of controllers detect at least one failure of the sensor and the actuator connected to each, and store at least one failure occurrence time and at least one elapsed time and detected failure data, respectively.
- the time management method of a vehicle failure diagnosis device wherein at least one time is a time relating to a failure
- the master controller measures a standard time and transmits the standard time to a plurality of controllers, and each of the plurality of controllers obtains a time related to a failure based on the standard time.
- each controller updates its own sub-standard time based on the received main standard time, so that there is no error in the standard time between the controllers in the vehicle failure diagnosis device, and a unified system-wide system Standard time can be managed.
- FIG. 1 is a functional block diagram of a vehicle failure diagnosis device according to an embodiment of the present invention
- FIG. 2 is a circuit block diagram of the vehicle failure diagnosis device according to the embodiment
- FIG. 3 is a flowchart of a time management process of the master controller 1 according to the embodiment
- FIG. 4 is a flowchart of a time management process of the controller 11 according to the embodiment
- FIG. 5 is a diagram of a vehicle failure diagnosis apparatus according to the prior art. It is a function block diagram. BEST MODE FOR CARRYING OUT THE INVENTION
- a master controller 1 and controllers 11a, llb, 11c,... 11n control various components of the vehicle, such as an engine, a transmission, and a brake.
- the respective controllers 1, lla, llb, 11c, ... 11n are connected to each other by a communication network 10 and transmit and receive control information and failure information through the communication network 10, so that the vehicle as a whole is Constructs a control device.
- Controller 1 1 a, llb, 1 1 c, ⁇ '1 since 1 n features are the same, it will be described here taking the controller 1 1 a as an example.
- the controllers 11a, 11b, 11c, ... 11n are referred to as controllers 11 for simplicity.
- the controller 11 has a controller 8 serving as a center of processing, and has the following processing means connected to the controller 8.
- the failure detecting means 62 detects a failure in the sensor or the actuator based on an input signal from the sensor and an output signal to the actuator, and outputs a failure detection signal to the controller 8.
- the standard time storage means 63 inputs and stores a standard time in the controller from the controller 8 (hereinafter, referred to as a sub-standard time).
- the failure information storage means 64 stores error data corresponding to the failure detection signal detected by the failure detection means 62 at the time of failure failure data such as the number of occurrences of this error code, and a standard time at this time.
- the sub-standard time stored in the means 63 is input from the controller 8 and stored together.
- the vehicle state storage means 65 is for inputting and storing the transition of the input / output signals of the sensor factory from the controller 8, and for example, stores the data at predetermined intervals and also stores when a failure occurs.
- the exchange time storage means 66 inputs the above sub-standard time from the controller 8 when the controller 11 is newly exchanged, and stores this.
- the controller 8 sends and receives the above data to and from the master controller 1 via the communication network 10 via the network interface 13.
- the master controller 1 has basically the same configuration as the controller 11, but differs in that it has a standard time measuring means 9.
- the standard time measuring means 9 is for measuring a standard time (hereinafter referred to as a main standard time) of the entire vehicle failure diagnosis device, and counts in units of a predetermined time (for example, one minute).
- Master controller The controller 8 of the controller 1 inputs the counted main standard time value, and like the controller 11, the controller 8 stores the main standard time value in its own failure information storage means 6 4, vehicle status It is stored in the storage means 65 and the replacement time storage means 66 for failure diagnosis. Therefore, the master controller 1 is not limited to this, and any one of the plurality of controllers 11 in the same vehicle control device may be used as the master controller.
- the controller may be selected and a standard time counting means 9 may be provided in this controller. Then, the main standard time value is transmitted to another controller 11 via the network interface 13.
- the controller 8 of each controller 11 receives the main standard time value, updates its own sub standard time based on the received main standard time value, and writes it to the standard time storage means 63.
- the present embodiment is a case where the master controller 1 has an operation switch 6 and a display 7, and the operation switch 6 and the display 7 are respectively connected to a controller 8 of the master controller 1.
- the operation switch 6 is an input switch for designating a display target for displaying the failure information, the vehicle state, the replacement time, and the like of each controller 11 at the time of failure diagnosis.
- the display 7 displays these, and is composed of, for example, an LED display capable of displaying an error code / occurrence time, a character display capable of displaying an error content and the like.
- the controller 8 of the master controller 1 transmits the display target designation signal input from the operation switch 6 to another controller 11 via the communication network 10.
- the controller 8 of the other controller 11 transmits the failure information, the vehicle state, the replacement time, and the like corresponding to the display target designation signal to the master controller 1 via the communication network 10.
- the controller 8 of the master controller 1 outputs the received data to the display 7.
- the operation switch 6 and the display 7 for displaying the failure information, the vehicle state, the replacement time, and the like may be provided in the service tool 51 that can be connected to the communication network 10.
- the service tool 51 is connected only for failure diagnosis, and may be connected to the always-on communication network 10 or may be connected only for failure diagnosis.
- the service tool 51 has a network interface 1.3 in addition to the operation switch 6 and the display 7.
- FIG. 2 is a circuit block diagram.
- Each controller 11 is configured by a microcomputer system having a CPU 12 as a core.
- the failure detection circuit 18 detects a failure of the sensor or the actuator based on an input signal from the sensor and an output signal to the actuator, etc., and outputs the detected failure data to the CPU 12.
- the memory 14 is a writable memory for storing data such as failure information, vehicle status, and replacement time, and can retain the stored contents even when the controller 11 is turned off. It consists of a CMOS type RAM.
- the CPU 12 can transmit and receive data to and from the other controller 11, the master controller 1, and the service tool 51 through the communication network 10 via the network interface 13.
- the basic configuration of master controller 1 is the same as that of controller 11. That is, it is configured by a microcomputer system having a CPU 2 (corresponding to a CPU 12) as a core, and includes a failure detection circuit 18, a memory 14, a network interface 13 and the like. However, as a configuration different from the controller 11, the master controller 1 has a master circuit 5 for measuring the main standard time.
- the clock circuit 5 has a clock transmission circuit of a predetermined frequency, counts this clock, and outputs an interrupt processing request signal to the CPU 2 every predetermined time (for example, one minute). .
- the master controller 1 has an operation switch 6 and a display 7, which are connected to the CPU 2.
- the service tool 51 consists of a similar microphone-based computer system centered on the CPU 52, and also has a memory 54, a network interface 13, a switch 56, and a display 57. I have.
- the memory 54 stores data for failure diagnosis, and may be, for example, a CMOS type RAM backed up by a battery.
- the switch 56 and the display 57 have the same functions as the operation switch 6 and the display 7 of the master controller 1, respectively.
- the service tool 51 may be constituted by, for example, a normal personal computer.
- FIG. 3 shows the time management processing flow of the CPU 2 of the master controller 1. The following interrupt processing is performed by an interrupt signal from the clock circuit 5 every predetermined time.
- Step 100 A predetermined main standard time storage area in the memory 14 Read the standard time and proceed to step 101.
- Step 101 Update the main standard time. For example, if interrupt processing is performed every minute, add 1 minute to the old main standard time to obtain the new main standard time. Next, go to step 102.
- Step 102 The new main standard time is written in the predetermined main standard time storage error, and the process proceeds to step 103.
- Step 103 Send a new main standard time to each controller 11 and proceed to this interrupt end processing.
- the CPU 2 can update the main standard time at predetermined time intervals, and can transmit the updated main standard time to each controller 11 via the communication network 10.
- the time management processing of the CPU 12 of each controller 11 will be described with reference to the flowchart of FIG.
- the processing cycle of CPU 12 is set to a short cycle such that an error with respect to a predetermined cycle at which CPU 2 transmits the main standard time (ie, an update unit time of the sub-standard time) can be ignored.
- the replacement time represents the standard time when each controller 11 is mounted on the current vehicle and first turned on.
- the sub-standard time is the standard time stored in each controller 11, and the sub-operation time represents the operation time when each controller 11 is used.
- the data of the replacement time, the sub-standard time, and the sub-operation time shall be initialized to 0.
- Step 1 1 1 The sub-standard time, the sub-operation time, and the replacement time are read from a predetermined storage area of the memory 14, and the process proceeds to Step 1 12.
- Step 1 1 Receive the main standard time from master controller 1 and proceed to step 1 13.
- Step 1 1 3 Compare whether the sub standard time is equal to the main standard time. If they are equal, the main standard time has not yet been updated, so proceed to the end (processing end). No. If not, the main standard time has been updated, so go to steps 114.
- Step 1 1 It is determined whether the difference between the sub standard time and the main standard time is 1 (update unit time). If the difference is 1, it is a normal time update, and the process proceeds to step 115. Otherwise, the process proceeds to step 118.
- Step 1 15 Determine whether the main standard time is 1 (update unit time). If the main standard time is 1, the vehicle is a new car and go to step 116. If the main standard time is not 1, it is a normal time update and go to step 117.
- Step 1 16 Since the vehicle is a new car, subtract one update unit time from the main standard time to set the replacement time to 0. Then go to steps 1-17.
- Step 1 17 Since one update unit time has elapsed since the previous processing, the sub operating time is increased by one update unit time, and the process proceeds to step 121.
- Step 1 18 It is determined whether the main standard time is 1 (update unit time). If the main standard time is 1, the vehicle is a new car, and from the result of step 114, the controller is equipped with a second-hand product with advanced substandard time. Proceed to. If the main standard time is not 1, the vehicle is a used vehicle and go to step 120.
- Step 1 19 Since the vehicle is a new car, subtract one update unit time from the main standard time to set the replacement time to 0. Then, go to step 1 2 1.
- Step 122 Since the vehicle is a used vehicle, the replacement time is made equal to the main standard time, and the process proceeds to Step 122.
- Step 1 2 1 Since one update unit time has elapsed since the previous processing, the sub standard time is made equal to the main standard time, and the process proceeds to step 122.
- Step 1 2 2 The updated sub-standard time, sub-operation time, and replacement time are written in the predetermined storage areas of the memory 14, and the process ends.
- the CPU 12 causes the sub-standard time, sub-operation time, and the like stored in each controller 11 to be stored. Update time and replacement time based on the new main standard time. Therefore, since these times are uniformly managed by the main standard time of the master controller 1, the time error between the controllers 11 is eliminated.
- Each controller 11 stores time data based on the unified standard time when storing failure information at the time of failure occurrence, vehicle state, and the like in a predetermined area. That is, when the CPU 12 inputs the failure data detected by the failure detection circuit 18, the CPU 12 reads the sub-standard time (hereinafter referred to as “failure occurrence time”) and the sub-operation time at the time of the failure, and reads the failure data.
- the failure occurrence time and the sub-operation time are written as failure information in a predetermined failure information storage area of the memory 14.
- the elapsed time from the occurrence of the failure can be stored as failure information, and the elapsed time can be obtained as the time obtained by subtracting the failure occurrence time from the sub-standard time at predetermined time intervals.
- the CPU 12 also writes the input sensor signal, the output factor control signal, and the input / output time to a predetermined vehicle state storage area at predetermined intervals, for example.
- the failure information, the vehicle state, the replacement time, and the like can be displayed on the display 7 by the operation switch 6 of the master controller 1. Also, when the service tool 51 is connected, it can be displayed in the same manner as above. By looking at these displayed contents, it is possible to analyze the details of the failure and the time and elapsed time of the failure, the I / O signal, its I / O time, and the replacement time in each controller 11 in the correct time order, so that the cause of the failure can be identified Can be reliably implemented.
- the present invention updates the time of a plurality of controllers based on the standard time of a master controller, so that the time can be managed in a unified manner, and a time management system for a vehicle failure diagnosis device that can reliably diagnose a failure with an accurate time. And useful as a method.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/952,727 US6012004A (en) | 1995-05-25 | 1996-05-23 | System and method for managing time for vehicle fault diagnostic apparatus |
AU57786/96A AU690460B2 (en) | 1995-05-25 | 1996-05-23 | System and method for managing time for vehicle fault diagnostic apparatus |
EP96914410A EP0838788B1 (en) | 1995-05-25 | 1996-05-23 | System and method for managing time for vehicle fault diagnostic apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14978695A JP3657027B2 (ja) | 1995-05-25 | 1995-05-25 | 車両故障診断装置の時間管理システム及び方法 |
JP7/149786 | 1995-05-25 |
Publications (1)
Publication Number | Publication Date |
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WO1996037864A1 true WO1996037864A1 (fr) | 1996-11-28 |
Family
ID=15482689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/001366 WO1996037864A1 (fr) | 1995-05-25 | 1996-05-23 | Systeme et procede de gestion de temps pour dispositif de diagnostic d'anomalie dans un vehicule |
Country Status (8)
Country | Link |
---|---|
US (1) | US6012004A (ja) |
EP (1) | EP0838788B1 (ja) |
JP (1) | JP3657027B2 (ja) |
KR (1) | KR960040865A (ja) |
CN (1) | CN1185223A (ja) |
AU (1) | AU690460B2 (ja) |
CA (1) | CA2222246A1 (ja) |
WO (1) | WO1996037864A1 (ja) |
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1996
- 1996-05-23 AU AU57786/96A patent/AU690460B2/en not_active Ceased
- 1996-05-23 CA CA002222246A patent/CA2222246A1/en not_active Abandoned
- 1996-05-23 US US08/952,727 patent/US6012004A/en not_active Expired - Fee Related
- 1996-05-23 CN CN96194120A patent/CN1185223A/zh active Pending
- 1996-05-23 EP EP96914410A patent/EP0838788B1/en not_active Expired - Lifetime
- 1996-05-23 WO PCT/JP1996/001366 patent/WO1996037864A1/ja active IP Right Grant
- 1996-05-25 KR KR1019960017937A patent/KR960040865A/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
AU5778696A (en) | 1996-12-11 |
CA2222246A1 (en) | 1996-11-28 |
JP3657027B2 (ja) | 2005-06-08 |
AU690460B2 (en) | 1998-04-23 |
EP0838788B1 (en) | 2005-11-16 |
US6012004A (en) | 2000-01-04 |
CN1185223A (zh) | 1998-06-17 |
KR960040865A (ko) | 1996-12-17 |
EP0838788A4 (en) | 2000-07-12 |
JPH08320955A (ja) | 1996-12-03 |
EP0838788A1 (en) | 1998-04-29 |
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