DE102020115404A1 - Communication device and method for transmitting and receiving information for a solo vehicle or a vehicle combination consisting of a towing vehicle and at least one trailer - Google Patents

Abstract

A communication device (105) for transmitting and receiving information for a vehicle (100) comprises a first communication unit (115) which is designed to enable an exchange of information between the vehicle (100) and another vehicle (110). The first communication unit (115) is or can be arranged in a first area (125) of the vehicle (100). Furthermore, the communication device (105) comprises at least one second communication unit (120) which is designed to exchange information between the vehicle (100) and the further vehicle (110) and / or the second communication unit (120) and the first communication unit (115 ) to enable. The second communication unit (120) is or can be arranged in a second area (130) of the vehicle (100).

Description

The present approach relates to a communication device and a method for transmitting and receiving information for a vehicle, a solo vehicle or a vehicle combination consisting of a towing vehicle and at least one trailer.

Today's radio links between vehicles are designed in such a way that a transmitting unit or a receiving unit is only installed in a towing vehicle. The radio link is used to exchange information between vehicles, such as between vehicles in a platoon.

Against this background, the object of the present approach is to create an improved communication device and an improved method for transmitting and receiving information between vehicles. Vehicles can also be combinations of vehicles.

This object is achieved by a communication device with the features of device claim 1, by a vehicle according to claim 8, by a vehicle combination according to claim 10, by a method according to claim 12, by a device according to claim 13 and by a computer program according to claim 14.

The advantages that can be achieved with the approach presented are that a stable connection and, at the same time, a significantly greater range of the connection with a maximum permitted transmission power can be achieved.

A communication device for transmitting and receiving information for a vehicle is presented, the communication device having a first communication unit which is designed to enable an exchange of information between the vehicle and another vehicle. The first communication unit is arranged or can be arranged in a first area of the vehicle. In addition, the communication device has at least one second communication unit which is designed to enable an exchange of information between the vehicle and the further vehicle and additionally or alternatively the second communication unit and the first communication unit, wherein the second communication unit is arranged or in a second area of the vehicle can be arranged.

According to one embodiment, the communication device can be arranged or arranged in a vehicle which is designed, for example, to transport people and additionally or alternatively objects. According to one embodiment, the vehicle can be implemented as a vehicle combination, such as, for example, a utility vehicle with at least one trailer, or as a long vehicle, such as, for example, a bus. The first communication unit, which is part of the communication device, can be arranged or can be arranged in the first area of the vehicle, that is to say at a first end of the vehicle. The second communication unit, which is also part of the communication device, can or can be arranged in the second area of the vehicle, that is, for example, at a second end opposite the first end of the vehicle. The information to be transmitted or received can include, for example: information about the vehicle (load status, number of axles ...), maximum possible deceleration, requested deceleration, distance to the vehicle in front, position ...

According to one embodiment, the first communication unit and the second communication unit can be designed to communicate wirelessly with one another. In this way, unwieldy cable connections can advantageously be dispensed with, particularly in vehicles that have a trailer, for example.

The communication device presented here has the first communication unit and the second communication unit, wherein the first communication unit and additionally or alternatively also the second communication unit can be designed as a repeater unit, in particular wherein the repeater unit can be designed as a WLAN repeater unit. As a result, the first and, additionally or alternatively, the second communication unit can advantageously be designed as an independent repeater unit that can be built into the vehicle as an individual part, for example.

According to one embodiment, the second communication unit can be integrated or can be integrated in a control device of the vehicle, in particular in a trailer of the vehicle. The control device can be designed, for example, to control lighting, a braking system or a unit for checking a tire pressure of the vehicle. The communication device can thus be implemented in a control device of the vehicle that is already present, for example. According to one embodiment, the control device can be integrated or can be integrated in the trailer of the vehicle, so that a disruption due to shadowing, for example, can advantageously be avoided.

Furthermore, a communication device according to an embodiment is presented, wherein the second communication unit is integrated or can be integrated in a trailer braking system of the vehicle. In this way, a distance to be bridged to the further vehicle can advantageously be reduced for the connection without increasing the transmission power.

According to one embodiment, the communication device can have a connection device which is designed to mechanically and additionally or alternatively connect the first communication unit and the second communication unit to one another in an electrically conductive manner. The connecting device can be formed, for example, as a cable which, according to one embodiment, is advantageously arranged in a vehicle that does not have a trailer in order to be able to establish a trouble-free connection.

According to one embodiment, the communication device presented here has at least one third communication unit which is designed to enable an exchange of information between the vehicle and the further vehicle and additionally or alternatively the first communication unit and additionally or alternatively the second communication unit and the third communication unit. The third communication unit can be arranged or can be arranged in a third area of the vehicle. This means that the vehicle can be implemented in several parts, for example with several trailers. In order to be able to establish a connection with at least one further vehicle, according to one embodiment it is advantageous if the vehicle has further communication units, as mentioned above. In the case of vehicles with trailers, it is advantageous to install a communication unit in each trailer so that the connection to the other vehicle can continue to be guaranteed regardless of the number of trailers. A range of the connection can advantageously be increased in this way.

Furthermore, a vehicle is presented with a communication device which is designed in one of the variants described above, in particular wherein the first communication unit is arranged in the first area and the second communication unit is arranged in the second area.

The vehicle can be implemented, for example, as a long vehicle such as a bus or as a towing vehicle with one or more trailers.

According to one embodiment, the first communication unit can be arranged or can be arranged in a towing vehicle and, additionally or alternatively, the second communication unit can be arranged or can be arranged in a vehicle part that can be separated from the towing vehicle. The towing vehicle can, for example, be designed as a truck that is designed to transport goods. Such vehicles usually consist of a towing vehicle and a trailer which is arranged separably on the towing vehicle. According to one embodiment, the vehicle can also be implemented as a bus, for example, so that both the first and the second communication unit are located within the same vehicle part.

In such a case it is advantageous if, for example, the first communication unit is arranged at one end of the vehicle in the direction of travel and the second communication unit is arranged at the opposite end, that is, at an end of the vehicle opposite to the direction of travel.

Furthermore, a vehicle combination consisting of a vehicle is presented, with at least one trailer and a communication device which is designed in one of the variants described above.

According to one embodiment, the vehicle combination can have one or more trailers that can be coupled to the towing vehicle. At least one of the communication units of the communication device can be arranged in or on the trailer. If, according to one embodiment, the vehicle combination has more than one trailer, a plurality of trailers or all trailers can each have at least one of the communication units of the communication device. In this way, a stable connection can advantageously be established between, for example, the vehicle with the vehicle combination and the further vehicle. This is particularly advantageous if the towing vehicle with the vehicle combination is very long overall, since this enables a stable connection to another vehicle driving behind the towing vehicle, for example.

According to one embodiment, the second communication unit can be arranged in or on the trailer, but in particular in a trailer braking system of the trailer. The second communication unit can thereby advantageously be arranged in a space-saving manner in an existing system.

Furthermore, a method for transmitting and receiving information for a vehicle using one of the communication devices presented above is presented, which has a reading-in step and a step of spending includes. In the reading-in step, a read-in signal is read in that represents at least one piece of information transmitted from a further vehicle to the first communication unit or second communication unit or that represents information provided by the first communication unit to the second communication unit or from the second communication unit to the first communication unit. It is also conceivable that the communication unit can also read in data from the vehicle that are made available, for example, on a CAN bus, such as the mass of the vehicle combination estimated in the brake control device. In the output step, an output signal, which represents the information, is output to the first communication unit or the second communication unit or the further vehicle using the read-in signal. In this case, the output signal can be related to the information, for example in such a way that the information can be extracted again from the output signal in some form.

The method can advantageously be used in a vehicle, such as, for example, a vehicle combination or a long vehicle.

This method can be implemented, for example, in software or hardware or in a mixed form of software and hardware, for example in a control device.

The approach presented here also creates a device which is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding units. This embodiment variant of the approach in the form of a device can also solve the problem on which the approach is based quickly and efficiently.

For this purpose, the device can have at least one processing unit for processing signals or data, at least one memory unit for storing signals or data, at least one interface to a sensor or an actuator for reading in sensor signals from the sensor or for outputting data or control signals to the Have an actuator and / or at least one communication interface for reading in or outputting data, which are embedded in a communication protocol. The computing unit can be, for example, a signal processor, a microcontroller or the like, wherein the storage unit can be a flash memory, an EPROM or a magnetic storage unit. The communication interface can be designed to read in or output data wirelessly and / or wired, a communication interface that can read in or output wired data, for example, can read this data electrically or optically from a corresponding data transmission line or output it into a corresponding data transmission line.

In the present case, a device can be understood to mean an electrical device that processes sensor signals and outputs control and / or data signals as a function thereof. The device can have an interface which can be designed in terms of hardware and / or software. In the case of a hardware design, the interfaces can, for example, be part of a so-called system ASIC which contains a wide variety of functions of the device. However, it is also possible that the interfaces are separate, integrated circuits or at least partially consist of discrete components. In the case of a software-based design, the interfaces can be software modules that are present, for example, on a microcontroller alongside other software modules.

In an advantageous embodiment, the device controls a communication device. For this purpose, the device can, for example, access sensor signals such as a read-in signal and an output signal. The control takes place via actuators such as a read-in unit, which is designed to read in information using the read-in signal, and an output unit, which is designed to output information using the output signal.

• 1 eine schematische Darstellung eines Fahrzeugs mit einer Kommunikationseinrichtung gemäß einem Ausführungsbeispiel und eines weiteren Fahrzeugs;
• 2 eine schematische Darstellung eines Fahrzeugs mit einer Kommunikationseinrichtung gemäß einem Ausführungsbeispiel;
• 3 eine schematische Darstellung eines Fahrzeugs mit einer Kommunikationseinrichtung und einem Anhängersystem gemäß einem Ausführungsbeispiel;
• 4 eine schematische Darstellung eines Fahrzeugs mit einer Kommunikationseinrichtung und einer Fahrzeugkombination gemäß einem Ausführungsbeispiel; und
• 5 ein Ablaufdiagramm für ein Verfahren zum Übermitteln und Empfangen von Informationen für ein Fahrzeug unter Verwendung einer Kommunikationseinrichtung gemäß einem Ausführungsbeispiel.

Embodiments of the approach presented here are explained in more detail in the following description with reference to the figures. Show it:

• 1 a schematic representation of a vehicle with a communication device according to an embodiment and a further vehicle;
• 2 a schematic representation of a vehicle with a communication device according to an embodiment;
• 3 a schematic representation of a vehicle with a communication device and a trailer system according to an embodiment;
• 4th a schematic representation of a vehicle with a communication device and a vehicle combination according to an embodiment; and
• 5 a flowchart for a method for transmitting and receiving information for a vehicle using a communication device according to an exemplary embodiment.

In the following description of advantageous exemplary embodiments of the present approach, identical or similar reference numerals are used for the elements shown in the various figures and having a similar effect, a repeated description of these elements being dispensed with.

1 shows a schematic representation of a vehicle 100 with a communication device 105 according to an embodiment and a further vehicle 110 .

Both the vehicle 100 as well as the rest of the vehicle 110 are designed to transport people and / or objects. The vehicle 100 is realized according to this embodiment only as an example as a vehicle combination that has a towing vehicle and a trailer. The vehicle 100 and / or the further vehicle 110 can be a highly automated or autonomously drivable vehicle. For example, the vehicles 100 , 110 be trained to drive in a so-called "platooning", which means that the vehicle 100 and / or the further vehicle 110 using a technical control system, for example, can drive one behind the other at a very short distance. The vehicle 100 has the communication device presented here 105 on. The communication facility 105 has a first communication unit 115 and a second communication unit 120 on. The first communication unit 115 is designed to facilitate an exchange of information between the vehicle 100 and the other vehicle 110 and / or the second communication unit 120 and the first communication unit 115 to enable. The communication unit 115 can also be one in the 1 External antenna, not explicitly shown, preferably on the roof. The first communication unit 115 is in a first area 125 of the vehicle 100 arranged or placeable, such as at a first end of the vehicle 100 , here as an example in the towing vehicle of the vehicle 100 is arranged. The second communication unit 120 is designed to facilitate an exchange of information between the vehicle 100 and the other vehicle 110 and / or the second communication unit 120 and the first communication unit 115 to enable. The second communication unit 120 is in a second area 130 of the vehicle 100 arranged or can be arranged, for example at a second end of the vehicle opposite the first end 100 , here as an example in the trailer of the vehicle 100 is arranged. The first communication unit 115 worded differently, it is designed to be one of the second communication unit 120 and / or the further vehicle 110 to receive provided information and / or to at least one piece of information to the second communication unit 120 and / or the further vehicle 120 provide or send. The second communication unit 120 worded differently, it is designed to be one of the first communication unit 115 and / or the further vehicle 110 to receive provided information and / or to at least one piece of information to the first communication unit 115 and / or the further vehicle 110 provide or send.

• Gemäß einem Ausführungsbeispiel ist die zweite Kommunikationseinheit 120 in einem Steuergerät 135 des Fahrzeugs 100 integriert oder aber optional integrierbar. Das Steuergerät 135 ist beispielsweise im Anhänger des Fahrzeugs 100 angeordnet.
• Gemäß diesem Ausführungsbeispiel kann das Steuergerät 135 ausgebildet sein, um neben der zweiten Kommunikationseinheit 120 beispielsweise ein Anhängerbremssystem oder eine Beleuchtung des Anhängers anzusteuern.

Optional exemplary embodiments of the approach described here are presented below:

• According to one embodiment, the second communication unit is 120 in a control unit 135 of the vehicle 100 integrated or optionally integrable. The control unit 135 is, for example, in the trailer of the vehicle 100 arranged.
• According to this exemplary embodiment, the control device 135 can be designed in addition to the second communication unit 120 for example to control a trailer braking system or a trailer lighting.

The trailer of the vehicle 100 can be used together with the communication facility presented here 105 can also be referred to as a trailer system. The second communication unit 120 the communication facility 105 according to this exemplary embodiment is only arranged in or on the trailer of the vehicle combination as an example, here again as an example in the trailer brake system of the trailer.

In other words, the approach presented here describes the construction of a radio network for communication between the vehicle 100 and at least one other vehicle 110 by means of several sending and receiving nodes per vehicle 100 that also act as network nodes and as communication units 115 , 120 can be designated. Such a connection can reduce or even avoid interference caused by shadowing, for example by a trailer, semitrailer, superstructure, loading and / or by reflections on, for example, noise barriers or traffic signs, taking into account a maximum permitted transmission power.

The content of the approach presented here is that the communication device 105 for example a towing vehicle through a plurality of communication units 115 , 120 is expanded. This bypasses the problem of shadowing and minimizes the problem of reflection. This results in a significantly higher range or availability between several vehicles with the same transmission power 100 , 110 achieved what especially with long vehicles 100 is advantageous because there is a distance to the next vehicle 110 is particularly high. According to one embodiment, it is not necessary that every communication unit 115 , 120 communicates with everyone. It is possible that the communication units 115 , 120 inside a vehicle 100 wireless, i.e. wireless communication with each other. This is possible, for example, with a connection between trailers and / or between trailer and towing vehicle. Furthermore, the first and / or second communication unit 115 , 120 be designed as a WLAN repeater unit, also known as a WLAN repeater, which is referred to, for example, as a so-called “stand alone” repeater unit. This means that it can be installed independently, for example. According to this embodiment is the second communication unit 120 in the form of such a repeater unit in the control unit 135, which already contains other functions, or integrated in a trailer brake system. In this context, it should be noted that the first communication unit does not function exclusively as a repeater, but that this communication unit also provides data from the vehicle 100 reads in and / or data to the vehicle 100 sends, with the vehicle 100 stands for all systems and control units that are installed in the vehicle.

According to this exemplary embodiment, a so-called vehicle platoon, as shown here, can consist of at least two vehicles, for example 100 , 110 exists, establish communication via, for example, at least one WLAN repeater unit. According to one exemplary embodiment, the repeater unit can be integrated in the trailer brake system, the repeater unit with a WLAN access point, that is to say a wireless access point, also called a base station, of the towing vehicle of the own vehicle 100 on the one hand and the access point of the following towing vehicle of the other vehicle 110 on the other hand communicates.

2 shows a schematic representation of a vehicle 100 with a communication device 105 according to an embodiment. Also the vehicle shown here 100 has a communication device 105 with the first communication unit 115 and the second communication unit 120 on, as they are already in 1 has been described. According to this embodiment, the vehicle is 100 but as a one-piece long vehicle 100 realized, such as a bus.

3 shows a schematic representation of a vehicle 100 with a communication device 105 and a vehicle combination 300 according to an embodiment. The vehicle 100 can the in 1 described vehicle 100 with the difference that the example here with the towing vehicle 301 of the vehicle 100 connected vehicle combination 300 according to this embodiment two trailers 303 and the communication device 105 a third communication unit 305 having. The vehicle combination 300 is shaped, for example, to transport objects. It is included as at least a trailer 303 with the communication facility 105 feasible, with the vehicle combination 300 according to this embodiment another trailer 303 having the third communication unit 305 having. That means the vehicle combination 300 as an association of several supporters 303 is feasible. The third communication unit 305 is designed to allow information to be exchanged between the vehicle 100 and the further vehicle and / or the first communication unit 115 and / or the second communication unit 120 and the third communication unit 305 to enable. The third communication unit 305 is in a third area 310 of the vehicle 100 arranged or placeable. The third area 310 is, according to an embodiment, on one of the first area 125 opposite end of the vehicle 100 arranged provided the vehicle 100 is realized as a vehicle combination. The vehicle combination is, for example, called the towing vehicle 301 with a vehicle part 320 realizable. The vehicle part 320 can according to this embodiment also as a trailer 303 be realized by the towing vehicle 301 is formed separable. According to this exemplary embodiment, the vehicle combination 300 another part of the vehicle 325 on. In such a case, the second area is 130 according to this embodiment between the first area 125 and the third area 310 arranged. According to an alternative embodiment, the vehicle combination 300 have at least one additional trailer or several additional trailers, the additional trailer and / or several of the additional or all additional trailers each having at least one additional communication unit 115 , 120 , 305 can have.

4th shows a schematic representation of a vehicle 100 with a communication device 105 and a vehicle combination 300 according to an embodiment. According to this embodiment, the vehicle is 100 - similar to in 3 described - as one Vehicle combination consisting of a towing vehicle 301 and one from the towing vehicle 301 separable vehicle part 320 realized according to this embodiment as a trailer 303 is formed. The towing vehicle shown here 301 can the in 2 described vehicle 100 correspond. According to this exemplary embodiment, the connection between the first communication unit is only shown differently 115 and the second communication unit 130 as they are here through a connecting device 400 is made. The connecting device 400 is shaped accordingly to the first communication unit 115 and the second communication unit 120 to connect mechanically and / or electrically conductive with each other. That means the two communication units 115 , 120 according to this embodiment are connected to one another by a cable, while in 2 are wirelessly connected, for example by being implemented as repeater units. According to one exemplary embodiment, such wired communication is of particular interest in long vehicles, since it can ensure a particularly stable exchange of information.

5 shows a flow chart for a method 500 for transmitting and receiving information for a vehicle using a communication device according to an exemplary embodiment. The procedure 500 can be implemented according to this exemplary embodiment in a vehicle, as is the case in one of the 1 until 4th has been described. The procedure 500 comprises one step 505 of reading and one step 510 of spending. In step 505 During the reading in, a reading signal is read in which represents information transmitted from a further vehicle to the first communication unit or second communication unit or which represents information provided by the first communication unit to the second communication unit or from the second communication unit to the first communication unit. In step 510 After outputting, an output signal that represents the information is output to the first communication unit or the second communication unit or the further vehicle using the read-in signal.

In step 510 of outputting, the output signal can for example be provided by the first communication unit to the second communication unit or output if the read-in signal in step 505 of reading in by the first communication unit was read in from the further vehicle. In step 510 of outputting, the output signal can also be provided or output from the first communication unit to the further vehicle if the read-in signal in step 505 of reading in by the first communication unit was read in by the second communication unit.

In step 510 of outputting, the output signal can be provided, for example, by the second communication unit to the first communication unit, or output if the read-in signal in step 505 of the reading in by the second communication unit was read in from the further vehicle. In step 510 of the output, the output signal can also be provided or output from the second communication unit to the further vehicle if the read-in signal in step 505 of reading in by the second communication unit was read in by the second communication unit.

The method steps presented here can be repeated and carried out in a sequence other than that described.

6th shows a device 600 that is set up to follow the steps of the in 5 to execute and / or control the described method. The device 600 is arranged according to an embodiment in a vehicle, as in the 1 until 4th has been described. The device 600 carries out the steps of the method in appropriate units. That means the device 600 according to this exemplary embodiment, a read-in unit 605 and an output unit 610 having. The reading unit 605 is designed to receive the read-in signal 615 read in. The output unit is analogous to this 610 designed to the output signal 620 to spend. According to one embodiment, the device is 600 arranged in the first, the second and / or the third communication unit of one of the communication devices described in one of the preceding figures.

If an exemplary embodiment comprises an “and / or” link between a first feature and a second feature, this is to be read in such a way that the exemplary embodiment according to one embodiment has both the first feature and the second feature and, according to a further embodiment, either only the has the first feature or only the second feature.

List of reference symbols

100

vehicle

105

Communication facility

110

another vehicle

115

first communication unit

120

second communication unit

125

first area

130

second area

300

Vehicle combination

301

Towing vehicle

303

fan

305

third communication unit

310

third area

320

Vehicle part

325

further vehicle part

400

Connecting device

500

proceedings

505

Reading step

510

Step of spending

600

contraption

605

Reading unit

610

Output unit

615

Read-in signal

620

Output signal

Claims (15)

Communication device (105) for transmitting and receiving information for a vehicle (100), the communication device (105) having the following features: - A first communication unit (115) which is designed to enable an exchange of information between the vehicle (100) and a further vehicle (110), wherein the first communication unit (115) is in a first area (125) of the vehicle (100) is arranged or can be arranged; and - At least one second communication unit (120) which is designed to enable an exchange of information between the vehicle (100) and the further vehicle (110) and / or the second communication unit (120) and the first communication unit (115), the second communication unit (120) is arranged or can be arranged in a second area (130) of the vehicle (100). Communication device (105) according to Claim 1 , wherein the first communication unit (115) and the second communication unit (120) are designed to communicate wirelessly with one another. Communication device (105) according to one of the preceding claims, wherein the first communication unit (115) and / or the second communication unit (120) is designed as a repeater unit, in particular wherein the repeater unit is designed as a WLAN repeater unit. Communication device (105) according to one of the preceding claims, wherein the second communication unit (115) is integrated or can be integrated in a control device (135) of the vehicle (100), in particular in a trailer (303) of the vehicle (100). Communication device (105) according to one of the preceding claims, wherein the second communication unit (120) is or can be integrated into a trailer braking system of the vehicle (100). Communication device (105) according to one of the preceding claims, with a connection device (400) which is designed to connect the first communication unit (115) and the second communication unit (120) to one another in a mechanically and / or electrically conductive manner. Communication device (105) according to one of the preceding claims, wherein the communication device (105) has at least one third communication unit (305) which is designed to exchange information between the vehicle (100) and the further vehicle (110) and / or the first To enable communication unit (115) and / or the second communication unit (120) and the third communication unit (305), wherein the third communication unit (305) is arranged or can be arranged in a third area (310) of the vehicle (100). Vehicle (100) with a communication device (105) according to one of the preceding claims, in particular wherein the first communication unit (105) is arranged in the first area (125) and the second communication unit (120) is arranged in the second area (130). Vehicle (100) according to Claim 8 wherein the first communication unit (115) is arranged or can be arranged in a towing vehicle (301) and / or wherein the second communication unit (120) is arranged or can be arranged in a vehicle part (320) that can be separated from the towing vehicle (301). Vehicle combination (300) consisting of vehicle (100), with at least one trailer (303) and a communication device (105) according to one of the Claims 1 until 7th . Vehicle combination (300) according to Claim 10 , wherein the second communication unit (120) is arranged in or on the trailer (303), in particular in a trailer braking system of the trailer (303). Method (500) for transmitting and receiving information for a vehicle (100) using a communication device (105) according to one of the Claims 1 until 7th , wherein the method (500) comprises the following steps: - Reading (505) a read-in signal (615) which represents at least one piece of information transmitted from a further vehicle (110) to the first communication unit (115) or second communication unit (120) or which represents information provided by the first communication unit (115) to the second communication unit (120) or by the second communication unit (120) to the first communication unit (115); and - outputting (510) an output signal (620), which represents the information, using the read-in signal (615) to the first communication unit (115) or the second communication unit (120) or the further vehicle (110). Device (600) which is set up to execute and / or control steps (505, 510) of the method (500) according to one of the preceding claims in corresponding units (605, 610). Computer program which is set up to carry out the method (500) according to Claim 12 execute and / or control. Machine-readable storage medium on which the computer program is based Claim 14 is stored.

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