KR20130142288A - Movable emergency power supplying device in ship and method for providing error recovery information - Google Patents

Abstract

Disclosed are a movable emergency power supplying device in a ship and a method for providing error recovery information. The movable emergency power supplying device includes a battery part; a charge part for charging the battery part with power by using a power source supplied from a power system of the ship; and a parallel connection part for connecting cables for parallel operation with another movable emergency power supplying device. [Reference numerals] (110) Power management part;(120) Parallel connection part;(130) Communication part;(140) Moving part;(150) Control part;(160) Display part;(170) Speaker part;(180) Emergency lighting part

Description

Movable emergency power supplying device in ship and method for providing error recovery information}

The present invention relates to a mobile emergency power supply of a ship and a method for providing error recovery information.

In modern society, ships are used for various purposes such as travel, cargo transportation and national defense, and due to the operation environment that needs to move independently for a long time, ships are supplied with power from the power system installed and operated on the ship itself. Have

Typically, a power system of a ship is composed of a power generation system consisting of a generator, etc. to produce power, and a switchboard for delivering the generated power to various loads of the ship.

However, when an accident occurs in the power system of the ship, it is difficult to immediately restore the power because it is difficult to supply additional power supply or replacement of large-capacity equipment and large-scale recovery manpower, like onshore power systems.

In addition, if the accident of the power system is prolonged, it may lead to the inability of the entire equipment such as ship movement, control, lighting, safety, and various treatment facilities, resulting in serious situations such as ship operation, crew safety, cargo handling / storage. May be

Therefore, it is essential to secure self-stability of the power system system and quickly recover in case of an accident in a ship.

Thus, ships are usually equipped with a power redundancy system to ensure its own stability of the power system system. In other words, even if any one system is disabled, the other system is configured to be automatically switched. In the black out state of the entire ship, the emergency power generation system is immediately operated to supply power necessary for the operation of the ship.

In addition, various sensors, breakers, relays, and controllers are connected to the power system to monitor the status of the power system and to limit the operation of automatic transfer and emergency power generation systems and the spread of accidents.

These devices are important components that can quickly identify the cause of an accident and take appropriate action. In an emergency, the equipment is supplied with power from an uninterruptible power supply (UPS), and the uninterruptible power supply is also redundant. It consists of.

However, even if the power system redundancy structure, emergency power supply system, uninterruptible power supply interlocking structure, etc. are applied to secure a stable power system of the ship, power failure of the entire ship, inability of emergency power generation system, There is a limit that the possibility of impossibility cannot be completely excluded.

In addition, in order to further stabilize the power system of the ship, the scheme of configuring the entire system into a multiplexed structure of redundancy or more may not be suitable due to space and cost constraints.

According to the present invention, an emergency power supply and a state checking means are integrally configured, and thus, various power consumption devices (for example, monitoring and / or protection) may be required when a black out occurs in a ship, and various sensors, breakers, and controllers may be used. Etc.) to provide emergency power and to check the status of each equipment to provide a mobile emergency power supply of the ship and a method for providing error recovery information that can continue the stable operation of the vessel.

The present invention is to provide a mobile emergency power supply and error recovery information providing method of the ship capable of supplying emergency power to a variety of power devices without cumbersome work such as disassembling the device, disconnecting the cable.

The present invention provides a mobile emergency power supply and error recovery information of the ship that can provide the operator with a supplementary means for checking the status of the various power consumption devices, so that the failure of the power system can be quickly and efficiently recovered. It is to provide.

The present invention provides a method for providing a mobile emergency power supply and error recovery information of a ship capable of detecting a power failure in a ship, detecting a state of various power consumption devices, diagnosing the presence of a failure, and providing a quick recovery method to a worker in a visual and audio manner. It is to provide.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the invention, the mobile emergency power supply of the ship, the battery unit; A charging unit charging electric power to the battery unit by using a constant power supplied from a power system of a ship; And a parallel connection for cable connection for parallel operation with another mobile emergency power supply.

By the cable connection of the parallel connection unit, the battery unit and the battery unit provided in the other portable emergency power supply may be connected to have a parallel connection relationship with each other.

Under the mobile emergency power supply, a moving part having a moving device and a transmission device driven by a remote controller for rotating the moving means may be provided.

The moving unit may further include at least one of a wheel braking lock and an electromagnet driven lock to lock the moving means when the driving of the transmission device is stopped.

The mobile emergency power supply of the ship, the power distribution unit for converting the output power to the appropriate voltage value for supplying the power charged in the battery unit to one or more power requirements; A communication unit for receiving operation state information from the power device; When the received operation state information indicates a predetermined error state, the controller may further include a control unit configured to output pre-stored action information through at least one of a display unit and a speaker unit in accordance with the error state.

The controller may control the charging path of the battery unit to be cut off using the regular power when the abnormal power state information of the continuous power is input from the charging unit.

According to another aspect of the present invention, a method for providing error recovery information performed in a mobile emergency power supply of a ship, the method comprising: determining whether the normal power supplied to charge the battery unit is normal; Operating at least one internal component using power charged in the battery unit as a driving power when the state of the continuous power is abnormal; Receiving operation state information from at least one power supply device that is communicatively connected through a communication socket and supplies power charged into the battery unit to operation power through a power socket; Determining whether the received operation state information indicates a predetermined error state; And when the error state is indicated, processing the action information corresponding to the error state to be output through at least one of a display unit, a speaker unit, and the like.

The action information may be stored in advance in the storage unit or may be received in real time from the power monitoring unit through a communication network.

In order to increase the amount of power supplied to the power consuming device, the plurality of mobile emergency power supplies may be interconnected through the provided parallel connection.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to an embodiment of the present invention, the emergency power supply and state check means are integrated to provide emergency power to various power supply devices (e.g., facilities required for monitoring and / or protection) when a black out occurs in a ship. It can supply and check the condition of each equipment, so that the ship can maintain stable operation.

In addition, there is an effect that can supply emergency power to a variety of power devices without the cumbersome work such as disassembling the device, disconnect the cable.

In addition, by providing a worker with an auxiliary means for checking the status of various power supply devices, it is possible to quickly and efficiently recover from power system failures.

In addition, there is an effect that can detect a power outage in the vessel, detect the state of various power consumption devices and diagnose the failure, and provide a quick recovery method to the operator in a visual and audio manner.

1 is a view schematically showing the configuration of a mobile emergency power supply according to an embodiment of the present invention.
2 is a diagram schematically illustrating a configuration of a power management unit according to an embodiment of the present invention.
Figure 3 illustrates the appearance of a mobile emergency power supply according to an embodiment of the present invention.
4A and 4B illustrate an arrangement of a portable emergency power supply according to embodiments of the present invention.
Figure 5 illustrates the use of the mobile emergency power supply according to an embodiment of the present invention.
6 is a flowchart illustrating a method for providing error recovery information according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software .

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a view schematically showing a configuration of a mobile emergency power supply apparatus according to an embodiment of the present invention, Figure 2 is a view schematically showing the configuration of a power management unit according to an embodiment of the present invention. 3 is a view illustrating the external appearance of the mobile emergency power supply according to an embodiment of the present invention, Figures 4a and 4b is a view illustrating the arrangement of the mobile emergency power supply according to embodiments of the present invention. 5 is a diagram illustrating a use form of a mobile emergency power supply apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the mobile emergency power supply device 100 (hereinafter, referred to as a power supply device 100) may include a power management unit 110, a parallel connection unit 120, a communication unit 130, and a moving unit 140. The control unit 150 may include a display unit 160, a speaker unit 170, and an emergency lighting unit 180.

The power management unit 110 receives power at all times from the ship's power system to charge the battery unit 240, and when a problem occurs in the power system, the power management unit 110 uses the power charged in the battery unit 240 ( 510).

In the present specification, the power consuming device 510 is checked for resolution of an abnormal state when an abnormal state such as a power failure occurs, and for example, a monitoring / protection device that is one or more of various sensors, breakers, controllers, etc. One or more of a safety device such as an evacuation induction lamp that should be operated normally for the purpose of securing safety, and a power system device such as a switchboard that requires power to be supplied for the purpose of normal system operation of the power system. Should be interpreted in a broad sense.

A schematic configuration of the power management unit 110 is illustrated in FIG. 2. 2, the power management unit 110 may include a charging unit 210, a power converter 220, a power distribution unit 230, and a battery unit 240. Although not shown, a protection device such as a circuit breaker or a fuse may be included in the power management unit 110 in order to secure the safety of the power input / output process.

In the situation in which the power system of the ship is normally driven, the charging unit 210 allows the battery unit 240, which will be described later, to be charged using the constant power provided from the power system in connection with the power conversion unit 220.

The charging unit 210 monitors whether the input state of the constant power is normal, and if the current input state of the constant power is abnormal (for example, a power failure state) as a result of the monitoring, the control unit 150. ).

The power converter 220 converts the input AC power into DC power to charge the battery unit 240 when the power system of the ship is normally driven, and outputs the DC power.

However, the power converter 220 converts the DC power charged in the battery unit 240 into AC power so that the power supply device 510 can be supplied with power when the input state of the constant power is abnormal due to a power failure. To print.

The power distribution unit 230 uses the AC power and / or the DC power charged in the battery unit 240, which is converted and output by the power converter 220 in a state in which the input state of the constant power is abnormal, the power supply device 510. ) To have a voltage value that can be supplied and output it.

The voltage value converted and output by the power distribution unit 230 may be, for example, AC 220V, DC 110V, DC 24V, DC 12V, DC 5V, and the like, and power to be supplied by the power supply device 100. The required voltage value of the required device 510 may correspond to this.

The voltage value converted and output by the power distribution unit 230 may be, for example, a voltage value corresponding to a value input by an operator using an operation panel 320 (see FIG. 3) provided in the power supply device 100. In addition, the power distribution unit 230 may perform output for all predetermined voltage values, but may be supplied by connecting an output terminal having a suitable voltage value to the power demand device 510 to be supplied by the operator.

The power distribution unit 230 may further include a structure for charging the portable devices for maintenance activities such as various portable devices and / or flashlights, as well as a structure for supplying power to the various power devices 510. have.

When the power distribution unit 230 further includes a structure for charging the portable device, since the charging of the portable device needs to be performed in a state in which an input state of a constant power source is normal, the battery unit 240 even in a state where the power system is normal. Naturally, the DC power charged in the converter may be converted to have a predetermined voltage value and output.

When the input state of the constant power is normal, the battery unit 240 charges the power by using the DC power converted by the power converter 220 to the constant power supplied from the power system.

However, when the input state of the constant power is abnormal, one or more internal components (for example, the display unit 160, the speaker unit 170, and the emergency lighting unit 180) in which the charged power is included in the power supply device 100 may be used. ), One or more of the moving unit 140, etc.).

In this case, a power supply path for supplying power to the internal component from the battery unit 240 may be preconfigured, and the internal component is configured to be selectively supplied with driving power by any one of the constant power and the battery power. In this case, the controller 150 may perform switching control of the power supply path to operate the internal component by the battery power.

In addition, the battery unit 240 functions to supply the charged power to the one or more power devices 510 by the voltage conversion process of the power distribution unit 230.

In addition, as shown in FIG. 5, each of the power supply devices 100 has a structure in which a plurality of power supply devices 100 work together through a cable connection between the provided parallel connection parts 120, and the parallel connection parts 120. When the plurality of power supply devices 100 are connected to each other, the battery units 240 provided in the parallel connection units 120 are connected to each other in parallel to increase the capacity of the power that can be supplied to the power supply device 510. There is an advantage.

Referring back to FIG. 1, the communication unit 130 transmits state information of the power supply device 100 to a power monitoring unit (not shown) when the ship's power system is in a normal state under the control of the controller 150. Receive information about the ship's power system status from the power monitoring unit. The power monitoring unit collects and manages information on the current state of the ship's power system from one or more supervisory protection facilities (e.g., one or more protective relays, breakers, etc.), whether or not there is a problem with the power system. Information corresponding to the problem may be provided to the power supply device 100.

In addition, the communication unit 130 may directly receive information regarding the current state of the ship's power system from one or more surveillance protection devices (eg, various sensors, breakers, etc.).

In addition, when the power system of the ship is in an abnormal state, the communication unit 130 transmits and receives information with each power demanding device and / or power monitoring unit through a wired and / or wireless communication network to determine the current power system state and / or power demanding device 510. You can also collect information about the occurrence of errors, etc.).

The moving unit 140 may include, for example, a moving unit such as a wheel so that an operator can move the power supply device 100 to an appropriate place to use the power charged in the battery unit 240.

The movable structure of the moving unit 140 may include, for example, a transmission apparatus driven and operated by a remote controller, thereby enabling easy movement of the power supply device 100.

In addition, the movable structure of the moving unit 140 is, for example, to be locked to the moving means automatically locked in the position when the movement of the power supply device 100 is stopped or completed and stopped. It may also comprise a wheel locking lock and / or an electromagnet driven lock structure.

The controller 150 may recognize the current state of the power system of the ship by using the information received from the power monitoring unit and / or the monitoring protection facility through the communication unit 130, the abnormal power state received from the charging unit 210 Information on whether the power failure situation can be recognized.

In addition, in an abnormal state such as a power failure situation, the controller 150 may control the communication unit 130 to communicate with a power consuming device 510 connected through a communication network to recognize whether an error occurs, and when the error occurs, the corresponding power Action information on the required device 510 may be controlled to be output through the display unit 160 and / or the speaker unit 170.

The action information may be stored in advance to correspond to an error code in a storage unit (not shown) provided in the power supply device 100, or may be provided from a power monitoring unit through a wired / wireless communication network.

The error code may be determined using, for example, a predetermined reference table such as whether no signal is received from the power consuming device 510, or whether a value corresponding to the received signal is outside a predetermined normal range. As the action information corresponding to the error code is output through the display unit 160 and / or the speaker unit 170, the operator may quickly and easily perform an action on the power consuming device 510 in which an error occurs.

In addition, the controller 150 is charged to the battery unit 240 by the display unit 160, the speaker unit 170, the emergency lighting unit 180, etc. in order to facilitate the output of action information, etc. in an abnormal state such as a power failure situation. It is also possible to control the supplied power.

The display unit 160 displays the state of the power consuming device 510 based on a result of communication through the communication unit 130 with the power consuming device 510 for checking whether an error exists in an abnormal state of the ship's power system. Information is displayed, and if an error occurs in the power consuming device 510, information on the action read from the storage unit or received from the power monitoring unit is displayed.

The speaker unit 170 may warn the worker with a buzzer sound and / or a voice when an error occurs in the operating state of the power supply device 100 or when the power system of the ship is changed to an abnormal state.

In addition, when the power system is in an abnormal state, the speaker unit 170 may output, as a voice, action information for maintaining the power consumption device 510 and a precaution. Sound source data for voice output of the speaker unit 170 may be stored in advance in the storage unit or received in real time from the power monitoring unit.

Emergency lighting unit 180 is turned on by the control of the controller 150 to facilitate the access and maintenance work of the operator when the power system of the vessel is in an abnormal state.

3 illustrates an appearance of the power supply device 100.

Referring to FIG. 3, the power supply device 100 includes a moving unit 140, a display unit 160, a speaker unit 170, an emergency lighting unit 180, an LED unit 310, an operation panel unit 320, It may include a power socket 330, a communication socket 340 and a socket for parallel operation 350.

The LED unit 310 interlocks with the communication unit 130, the power management unit 110, and / or the controller 150 to display one or more information of the charging state of the battery unit 240, the operation state of the power supply device 100, and the like. I can display it.

The operation panel unit 230 is a means for the operator to input an operation command (for example, an action information display command, etc.), and may include, for example, one or more buttons or a touch sensitive panel.

The power socket 330 is a means for supplying driving power to the power consuming device 510 by connecting to the power consuming device 510 through a cable, and the communication socket 340 is a power consuming device such as a cable connection ( Means for performing communication with the 510.

The parallel operation socket 350 is connected to another power supply device 100 so that the battery unit 240 provided in each power supply device 100 is connected in parallel to each other to supply power to the power supply device 510. Means for increasing the total dose of.

4A and 4B are diagrams illustrating an arrangement form of the mobile emergency power supply device, and FIG. 5 is a diagram illustrating a use form of the mobile emergency power supply device.

As shown in FIG. 4A, the power supply device 100 may be arranged to be connected and arranged together with switchboards 410a and 410b (hereinafter referred to as 410) in a ship.

That is, the power supply device 100 receives constant power from the switchboard 410 while the power system of the ship is in a normal state to charge the battery unit 240.

However, when the power system is in an abnormal state, the power supply device 100 switches the power supply line at all times under the control of the controller 150, and supplies power charged to the battery unit 240 through the power socket 330. Supply to the switchboard 410 or / and other power consuming device 510, and transmits and receives status information through communication with the switchboard 410 or / and the power consuming device 510 connected through the communication socket 340 Maintenance can be done quickly.

While the battery unit 240 is charged by receiving power from the switchboard 410 at all times during the normal state, it is natural that the battery panel 240 can be separated from the switchboard 410 and moved to an appropriate position using the moving unit 140 when necessary.

In addition, as shown in FIG. 4B, the power supply device 100 may be mounted on the hull wall to receive power at all times, and to communicate with the power monitoring unit and / or the power consuming device. It can be separated from the hull wall and moved to an appropriate position.

In addition, in FIG. 5, a plurality of power supply devices 100 are connected in parallel through a socket 350 for parallel operation to increase a capacity of supply power, and power to a power supply device 510 connected through a power socket 330. The state of use for supplying is shown.

In FIG. 5, only one power supply device 510 is connected to the power supply device 100 to receive power, but a plurality of power supply devices 510 are simultaneously connected to the power supply device 100 to supply power. Of course, you can get a supply.

6 is a flowchart illustrating a method for providing error recovery information according to an embodiment of the present invention.

Referring to FIG. 6, the power supply device 100 receives power state information in step 610. The power state information is one of, for example, information on the power system situation of the ship received from the power monitoring unit, state information received from the power device 510, state information about the constant power received from the charging unit 210, and the like. It may contain the above.

In operation 620, the power supply device 100 determines whether the ship's power system is in a normal state with reference to the received power state information.

If the ship's power system is in a normal state, the process proceeds to step 610 again. However, if the ship's power system is determined to be abnormal then proceed to step 630.

In operation 630, the power supply device 100 stops processing of the power management unit 110 that charges power to the battery unit 240 using the constant power, and uses emergency power using the power charged in the battery unit 240. Perform feed processing.

The emergency power supply process may include, for example, one or more of power supply to internal components such as the display unit 160, power supply to the power dissipation device 510 connected through the power socket 330, and the like.

In operation 640, the power supply device 100 determines whether the power supply device 510 is in an error state by referring to state information received from the power supply device 510 connected through a wired and / or wireless communication network.

If there is no power consuming device 510 in an error state, the process waits at step 640.

However, if there is a power consumption device 510 in an error state, the power supply 100 recognizes an error code corresponding to an error state of the power consumption device 510 in step 650, and corresponds to the recognized error code. Error recovery action information is output through the display unit 160 and / or the speaker unit 170.

Error recovery action information may be previously stored in a storage unit (not shown) provided in the power supply device 100 to correspond to an error code, or may be provided from a power monitoring unit through a wired / wireless communication network.

The error code may be determined using, for example, a predetermined reference table such as whether an arbitrary signal is not received from the power consuming device 510 or whether a value corresponding to the received signal is out of a predetermined normal range.

As the action information corresponding to the error code is output through the display unit 160 and / or the speaker unit 170, the operator may quickly and easily perform an action on the power consuming device 510 in which an error occurs.

The above-described method for providing error recovery information may be performed by an automated procedure in a time-series order by a program embedded in or installed in a digital processing apparatus. The codes and code segments that make up the program can be easily deduced by a computer programmer in the field. In addition, the program is stored in a computer readable medium readable by the digital processing apparatus, and is read and executed by the digital processing apparatus to implement the method. The information storage medium includes a magnetic recording medium, an optical recording medium, and a carrier wave medium.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

100: portable emergency power supply 110: power management unit
120: parallel connection 130: communication unit
140: moving unit 150: control unit
160: display unit 170: speaker unit
180: emergency lighting unit 210: charging unit
220: power conversion unit 230: power distribution unit
240: battery unit 310: LED unit
320: operation panel portion 330: power socket
340: communication socket 350: socket for parallel operation
410, 410a, 410b: switchboard 510: power consumption device

Claims (10)

In the ship's mobile emergency power supply,
A battery section;
A charging unit charging electric power to the battery unit by using a constant power supplied from a power system of a ship; And
A ship's mobile emergency power supply comprising parallel connections for cabling for parallel operation with other mobile emergency power supplies. The method of claim 1,
By the cable connection of the parallel connection unit, the battery unit and the battery unit provided in the other portable emergency power supply unit is a mobile emergency power supply of the ship is connected to have a parallel connection relationship with each other. 3. The method according to claim 1 or 2,
Under the portable emergency power supply,
A mobile emergency power supply of a ship provided with a moving part having a moving means and a transmission device driven by a remote controller for rotating the moving means. The method of claim 3,
The moving unit further comprises at least one of a wheel braking lock and an electromagnet driven lock to lock the moving means when the driving of the transmission device is stopped. 3. The method according to claim 1 or 2,
A power distribution unit converting and outputting the electric power charged in the battery unit into an appropriate voltage value for supplying at least one power supply device;
A communication unit for receiving operation state information from the power device;
If the received operation state information indicates a predetermined error state, the mobile emergency power supply of the ship further comprises a control unit for controlling the output information stored in advance in accordance with the error state through at least one of the display unit and the speaker unit Feeding device. The method of claim 5,
The control unit is a mobile emergency power supply of the ship to control so that the charging path of the battery unit using the constant power when the abnormal power state information for the continuous power input from the charging unit. In the fault recovery information providing method performed in the mobile emergency power supply of the ship,
Determining whether normal power supplied to charge the battery unit is in a normal state;
Operating at least one internal component using power charged in the battery unit as a driving power when the state of the continuous power is abnormal;
Receiving operation state information from at least one power supply device that is communicatively connected through a communication socket and supplies power charged into the battery unit to operation power through a power socket;
Determining whether the received operation state information indicates a predetermined error state; And
And when the error state is indicated, processing the action information corresponding to the error state through one or more of the display unit and the speaker unit. The method of claim 7, wherein
The action information is stored in advance in the storage unit, or error recovery information providing method received in real time from the power monitoring unit via a communication network. The method of claim 7, wherein
In order to increase the amount of power supplied to the power dissipation device, a plurality of mobile emergency power supply is interconnected via a parallel connection provided. 10. A recording medium having recorded thereon a program of instructions that can be read and executed by a digital processing apparatus for performing the error recovery information providing method according to any one of claims 7 to 9.

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