WO1999024952A1 - Method, system and devices for collecting traffic data - Google Patents
Method, system and devices for collecting traffic data Download PDFInfo
- Publication number
- WO1999024952A1 WO1999024952A1 PCT/CH1997/000420 CH9700420W WO9924952A1 WO 1999024952 A1 WO1999024952 A1 WO 1999024952A1 CH 9700420 W CH9700420 W CH 9700420W WO 9924952 A1 WO9924952 A1 WO 9924952A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- traffic data
- data center
- motor vehicle
- transmitted
- transmission
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
- G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
Definitions
- the present invention relates to a method for collecting traffic data from a road network via a communication system.
- the present invention relates to a method for collecting traffic data from a road network via a mobile radio network, at least the current positions of a plurality of motor vehicles being transmitted to a traffic data center for processing.
- a traffic information system in which information about traffic jams or accidents is collected by a device installed in a vehicle, is described in EP 0 720 137 A2.
- the device described therein comprises an automobile navigation system for determining the position, a laser radar device for determining the number, the speed and the shape of vehicles, and traffic jam information and accident information are generated on the basis thereof.
- Various information collected by the vehicle is transmitted to a control center from a repeater, from where it is transmitted back to vehicles after processing by the control center.
- WO 96/30884 describes the transmission of position signals from mobile units (Communication of Position Signals from Mobile Units), which suggests automatically executed calls in a mobile telephone network such as the GSM (Global System for Mobile Communication) network for the transmission.
- GSM Global System for Mobile Communication
- the position of a motor vehicle located in the road network is preferably determined by means of a differential global positioning system (GPS) with which the motor vehicle in question is equipped.
- GPS global positioning system
- the current positions determined in this way are transmitted from the motor vehicle to a traffic data center by means of short messages (Short Message Service, SMS) via a mobile radio network, which preferably works according to the GSM standard.
- SMS Short Message Service
- the traffic data center preferably comprises a short message service center which is equipped such that it can carry out special services which are ordered by means of short messages from subscribers in the mobile radio network, preferably in accordance with the method which is described, inter alia, in patent EP 0689 368 B1.
- applications in the service center communicate with applications on a SIM (Subscriber Identification Module) card by means of short messages via a cellular network according to the GSM standard.
- SIM Subscriber Identification Module
- a software filter for short messages received allows special services such as the exchange of files, instructions and programs between the service center and a SIM card to be carried out. It is important to clarify here that the SIM card used in EP 0689 368 B1 is not decisive for the present invention, but that its features, in particular the software filter for executing special services, can also be implemented in another form known to the person skilled in the art .
- the determined current position is transmitted within the short message, after the header of the short message and after a second header that indicates the special service.
- the positions received in a short message by the traffic data center are temporarily stored by the special service in the Short Message Service Center.
- this service uses average values for position and time values for predefined road segments calculates which are saved in a database in individual time series for the corresponding predefined road segments.
- the current vehicle speed is also determined and transmitted, with the result that the average speeds for predefined road segments are calculated in a correspondingly simplified manner.
- the transmission of the current position of motor vehicles by means of short messages has in particular the advantages of short transmission times and low transmission costs.
- FIG. 1 shows an overview diagram with a section of the segmented road network, a motor vehicle, the mobile radio network, and the traffic data center.
- FIG. 2 shows a block diagram of the device for the motor vehicle, which comprises components for determining and transmitting the position.
- FIG. 4 shows a first variant of a flow chart, which illustrates the determination of time series with average speeds of road segments.
- FIG. 5 shows a second variant of a flow chart, which illustrates the determination of time series with average speeds of road segments.
- the reference number 1 relates to a road section of the road network which, in this example, is divided into the road segments 10a, 10b, 10c and 10d.
- the length of the road segments can be freely defined, but is preferably fifty meters to several kilometers.
- a variable segment length which depends, for example, on the average traffic density, is also possible.
- a motor vehicle 2 is located in the road segment 10a and moves toward the next road segment 10b in the direction of the arrow.
- the road has two lanes, for example with a different direction of travel. However, it does not matter to the invention whether it is a single or multi-lane road or a freeway.
- Component 200 includes position determining means, in this exemplary embodiment a differential global positioning system, which allows the position to be determined with an accuracy of approximately one meter.
- the components 201 and 202 contain transmission means which make it possible to communicate in a mobile radio network 4 in accordance with the GSM standard (GSM component 201) and to transmit short messages in this GSM network (SMS component 202).
- GSM component 201 GSM component 201
- SMS component 202 GSM network
- the position of the motor vehicle 2 is periodically transmitted to the traffic data center 5.
- the position of motor vehicle 2 is first determined using GPS component 200.
- the value of the determined position is passed to the SMS component 202, where it is inserted into the short message 3 (FIG. 3).
- the short message 3 is constructed in such a way that the field 31 contains the standard header of the short message, that the field 32 contains a further second header which shows the recipient the special service - in this case the collection of traffic data - and that the field 33 contains the value of the specific position of motor vehicle 2.
- the short message 3 thus constructed is then sent by the GSM component 201 to the traffic data center 5 via the mobile radio network 4 within the same period.
- the traffic data center 5 comprises a short message service
- SSC 50 which, in addition to the functionality for handling standard short messages, has the functionality to recognize special services, which are specified in the second header 32, and the content of the short messages to the corresponding applications for executing the corresponding special services - in this case the application for the collection of traffic data 51 - pass on.
- a first step 601 the application determines the reception time for the collection of traffic data 51 and takes the value of the current position transmitted by the motor vehicle 2 from the field 33 during step 602.
- step 603 it is checked whether a position has already been received by the transmitter in question, in this case motor vehicle 2.
- the process continues with step 607 in which the time determined in step 601, the position value obtained and the identification of the transmitter are stored.
- the average vehicle speed of the corresponding motor vehicle is calculated in step 604 from the previous and new time and position values.
- step 605 the road segment corresponding to the newly transmitted position, in this case 10a, is determined.
- step 606 the time determined in step 601 and the calculated average vehicle speed are stored for this specific road segment.
- Position value and the identification of the transmitter are stored in step 607 was checked in step 608 whether a new average speed should be calculated for the particular road segment. In one variant, this is done by comparing the time determined in step 601 with a periodically incremented target time. In another variant, this decision depends on the number of average vehicle speeds stored for the relevant road segment since the last average calculation. If no new calculation is necessary, the processing of the received short message 3 ends in step 611. Otherwise, the average speed for the relevant road segment is calculated in step 609 (if the variant allows this step to be carried out without newly stored average vehicle speeds, this is carried out for this Given the existing average speed for the relevant street segment as a result). In step 610, the average speed calculated for the street segment together with the current time is stored in a database as a new value in a time series for the corresponding street segment. The processing of the received short message 3 then ends in step 611.
- the device 20 also has a clock 203, which is used to determine the current time when determining the current position of the motor vehicle, which is transmitted in addition to the position in the short message 3. Accordingly, in this variant, this transmitted time is taken from the short message 3 in the first step 601, instead of the reception time being determined.
- This variant has the advantage that the Calculation of the average vehicle speed of a motor vehicle cannot be falsified by the transmission times of short messages.
- the current position of the motor vehicle which is determined at the beginning of the period mentioned, is determined a second time within this period after a short predefined period of time, for example three seconds, and transmitted in the short message 3 to the traffic data center.
- the determined current positions are transmitted in two different short messages, which follow one another within the short predefined time period, with the corresponding, successively determined current positions.
- the successively determined current positions are transmitted to the traffic data center in a common short message.
- the device 20 also has means 204 for determining the speed of the motor vehicle.
- the current speed of the motor vehicle can also be determined and transmitted in addition to the current position in the short message 3. This eliminates the need to calculate the average vehicle speed of a motor vehicle using the application for the collection of traffic data 51.
- the application 51 determines the reception time (or takes the time from the short message if this variant is determined and transmitted by the motor vehicle in this variant) ) and in step 702 takes short message 3 from the current vehicle speed and current position transmitted by motor vehicle 2 (field 33).
- step 705 the road segment corresponding to the newly transmitted position is in this Case 10a, determined.
- step 706 the time determined in step 701 and the received vehicle speed are stored for this specific road segment.
- step 708 checks whether a new average speed should be calculated for the particular road segment. In one variant, this is done by comparing the time determined in step 701 with a periodically incremented target time. In another variant, this decision depends on the number of vehicle speeds stored for the relevant road segment since the last average calculation. If no new calculation is necessary, the processing of the received short message 3 ends in
- step 710 the average speed calculated for the road segment together with the current time is stored in a database as a new value in a time series for the corresponding road segment. Thereafter, the processing of the received short message 3 ends in step 711.
- This variant has the additional advantage that the calculation of average vehicle speeds in the traffic data center is omitted and therefore, especially in cases where many motor vehicles are equipped with a corresponding device (20) Collection of traffic data are included, is significantly relieved.
- the traffic data center 5 also includes other applications 52, which also perform special services requested by means of short messages 3.
- application 52 provides specific traffic information, such as traffic congestion information, on request.
- the application 52 evaluates the time series of average speeds of road segments created by the application for the collection of traffic data 51 and stored in a database with regard to traffic congestion. In this evaluation there is a traffic jam indicated by a significant reduction in the average speed in one or more contiguous road segments.
- An interested customer for example in a motor vehicle 2, can, for example, request traffic jam information from a specific street or area or for the streets between a starting point and a destination.
- the traffic data for the road segments need not be limited to time series of average speeds, but rather that other traffic information can also be determined, transmitted, received, processed, stored and distributed.
- additional information such as road temperature, air temperature or visibility (determined, for example, by detecting the presence and density of fog) in field 34 can be transmitted to the traffic data center for further use.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97909109T ATE200158T1 (en) | 1997-11-05 | 1997-11-05 | METHOD, SYSTEM AND DEVICES FOR COLLECTING TRAFFIC DATA |
DE59703258T DE59703258D1 (en) | 1997-11-05 | 1997-11-05 | METHOD, SYSTEM AND DEVICES FOR COLLECTING TRAFFIC DATA |
PCT/CH1997/000420 WO1999024952A1 (en) | 1997-11-05 | 1997-11-05 | Method, system and devices for collecting traffic data |
EP97909109A EP1012809B1 (en) | 1997-11-05 | 1997-11-05 | Method, system and devices for collecting traffic data |
AU46974/97A AU4697497A (en) | 1997-11-05 | 1997-11-05 | Method, system and devices for collecting traffic data |
TW087103047A TW367473B (en) | 1997-11-05 | 1998-03-03 | Method, system and devices for collection of traffic data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH1997/000420 WO1999024952A1 (en) | 1997-11-05 | 1997-11-05 | Method, system and devices for collecting traffic data |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999024952A1 true WO1999024952A1 (en) | 1999-05-20 |
Family
ID=4550908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1997/000420 WO1999024952A1 (en) | 1997-11-05 | 1997-11-05 | Method, system and devices for collecting traffic data |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1012809B1 (en) |
AT (1) | ATE200158T1 (en) |
AU (1) | AU4697497A (en) |
DE (1) | DE59703258D1 (en) |
TW (1) | TW367473B (en) |
WO (1) | WO1999024952A1 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001048725A1 (en) * | 1999-12-23 | 2001-07-05 | Gedas Telematics Gmbh | Method for determining traffic information, control centre and terminal |
DE10015936A1 (en) * | 2000-03-30 | 2001-10-18 | Bosch Gmbh Robert | Procedure for street class evaluation in navigation systems |
DE10030931A1 (en) * | 2000-06-24 | 2002-01-17 | Bosch Gmbh Robert | Method for calculating the route in a navigation system |
WO2002006088A1 (en) * | 2000-07-18 | 2002-01-24 | Robert Bosch Gmbh | Method and device for collecting data |
WO2002008695A1 (en) * | 2000-07-25 | 2002-01-31 | Volkswagen Ag | Method for providing traffic information |
WO2002027691A1 (en) * | 2000-09-27 | 2002-04-04 | Zoltan Anton Kiefer | Device and method for detecting traffic jams |
FR2814843A1 (en) * | 2000-09-29 | 2002-04-05 | Sfr Sa | Roadside display panel road traffic information calculation having car placed radio communications mobile station with two successive car positions calculated from transmitted message |
EP1209647A1 (en) * | 2000-11-21 | 2002-05-29 | Openwave Systems Inc. | A system and method for the acquisition of automobile traffic data through wireless networks |
WO2002045046A2 (en) * | 2000-11-28 | 2002-06-06 | Applied Generics Limited | Traffic monitoring system |
GB2369966A (en) * | 2000-12-06 | 2002-06-12 | Roke Manor Research | Location-dependent data collection |
EP1262934A2 (en) * | 2001-06-01 | 2002-12-04 | DDG Gesellschaft für Verkehrsdaten mbH | Method to detect a traffic situation |
GB2378615A (en) * | 2001-08-09 | 2003-02-12 | Vodafone Plc | Automatic answering service depending on location |
EP1288885A2 (en) * | 2001-08-08 | 2003-03-05 | Pioneer Corporation | Road traffic information processing apparatus and method |
EP1413999A1 (en) * | 2002-10-21 | 2004-04-28 | DDG Gesellschaft für Verkehrsdaten mbH | Method to generate implicit information from FCD |
WO2004070676A1 (en) * | 2003-01-30 | 2004-08-19 | Binary Protocol Llc | Acquiring, managing, distributing, and presenting contextual data relating to a known position for location-based services to and between users |
US7206585B2 (en) | 2000-12-06 | 2007-04-17 | Roke Manor Research Ltd. | Location-dependent data collection |
EP1742189A3 (en) * | 2005-06-29 | 2009-10-28 | Nissan Motor Company Limited | Traffic jam prediction |
DE202010004382U1 (en) | 2010-03-30 | 2010-08-12 | Audio Mobil Elektronik Gmbh | FCD system |
DE202010004383U1 (en) | 2010-03-30 | 2010-08-12 | Audio Mobil Elektronik Gmbh | FCD device |
BE1019524A3 (en) * | 2010-09-30 | 2012-08-07 | Be Mobile Nv | SYSTEM AND METHOD FOR TRAVEL TIME MEASUREMENT. |
CN104064049A (en) * | 2014-06-20 | 2014-09-24 | 昆明理工大学 | Intelligent traffic road capacity reporting system through short messages |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10237906B4 (en) * | 2001-09-05 | 2018-02-22 | Deutsche Telekom Ag | Method for detecting the driving characteristics of motor vehicles |
TWI497460B (en) * | 2012-12-14 | 2015-08-21 | Inst Information Industry | Average vehicle speed calculation system and average vehicle speed calculation method |
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EP0715285A1 (en) * | 1994-11-28 | 1996-06-05 | MANNESMANN Aktiengesellschaft | Method for reducing the amount of data to be transmitted from vehicles of a fleet of vehicles |
DE19604084A1 (en) * | 1995-03-23 | 1996-10-02 | Deutsche Telekom Mobil | Method and device for determining dynamic traffic information |
EP0748727A1 (en) * | 1995-06-15 | 1996-12-18 | Seguridad Mapfre, Segurmap, S.A. | Safety system for vehicles |
WO1997029470A1 (en) * | 1996-02-08 | 1997-08-14 | Mannesmann Ag | Process for obtaining traffic data |
-
1997
- 1997-11-05 EP EP97909109A patent/EP1012809B1/en not_active Revoked
- 1997-11-05 AT AT97909109T patent/ATE200158T1/en not_active IP Right Cessation
- 1997-11-05 WO PCT/CH1997/000420 patent/WO1999024952A1/en not_active Application Discontinuation
- 1997-11-05 DE DE59703258T patent/DE59703258D1/en not_active Revoked
- 1997-11-05 AU AU46974/97A patent/AU4697497A/en not_active Abandoned
-
1998
- 1998-03-03 TW TW087103047A patent/TW367473B/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0715285A1 (en) * | 1994-11-28 | 1996-06-05 | MANNESMANN Aktiengesellschaft | Method for reducing the amount of data to be transmitted from vehicles of a fleet of vehicles |
DE19604084A1 (en) * | 1995-03-23 | 1996-10-02 | Deutsche Telekom Mobil | Method and device for determining dynamic traffic information |
EP0748727A1 (en) * | 1995-06-15 | 1996-12-18 | Seguridad Mapfre, Segurmap, S.A. | Safety system for vehicles |
WO1997029470A1 (en) * | 1996-02-08 | 1997-08-14 | Mannesmann Ag | Process for obtaining traffic data |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001048725A1 (en) * | 1999-12-23 | 2001-07-05 | Gedas Telematics Gmbh | Method for determining traffic information, control centre and terminal |
DE10015936A1 (en) * | 2000-03-30 | 2001-10-18 | Bosch Gmbh Robert | Procedure for street class evaluation in navigation systems |
US6640183B2 (en) | 2000-03-30 | 2003-10-28 | Robert Bosch Gmbh | Method for the evaluation of road classification in navigation systems |
DE10015936C2 (en) * | 2000-03-30 | 2002-06-13 | Bosch Gmbh Robert | Procedure for street class evaluation in navigation systems |
DE10030931A1 (en) * | 2000-06-24 | 2002-01-17 | Bosch Gmbh Robert | Method for calculating the route in a navigation system |
DE10030931C2 (en) * | 2000-06-24 | 2002-06-13 | Bosch Gmbh Robert | Method for calculating the route in a navigation system |
WO2002006088A1 (en) * | 2000-07-18 | 2002-01-24 | Robert Bosch Gmbh | Method and device for collecting data |
WO2002008695A1 (en) * | 2000-07-25 | 2002-01-31 | Volkswagen Ag | Method for providing traffic information |
WO2002027691A1 (en) * | 2000-09-27 | 2002-04-04 | Zoltan Anton Kiefer | Device and method for detecting traffic jams |
FR2814843A1 (en) * | 2000-09-29 | 2002-04-05 | Sfr Sa | Roadside display panel road traffic information calculation having car placed radio communications mobile station with two successive car positions calculated from transmitted message |
EP1209647A1 (en) * | 2000-11-21 | 2002-05-29 | Openwave Systems Inc. | A system and method for the acquisition of automobile traffic data through wireless networks |
US6804524B1 (en) | 2000-11-21 | 2004-10-12 | Openwave Systems Inc. | System and method for the acquisition of automobile traffic data through wireless networks |
WO2002045046A2 (en) * | 2000-11-28 | 2002-06-06 | Applied Generics Limited | Traffic monitoring system |
WO2002045046A3 (en) * | 2000-11-28 | 2002-10-17 | Applied Generics Ltd | Traffic monitoring system |
US7206585B2 (en) | 2000-12-06 | 2007-04-17 | Roke Manor Research Ltd. | Location-dependent data collection |
GB2369966B (en) * | 2000-12-06 | 2003-03-05 | Roke Manor Research | Location dependent data collection |
GB2369966A (en) * | 2000-12-06 | 2002-06-12 | Roke Manor Research | Location-dependent data collection |
EP1262934A2 (en) * | 2001-06-01 | 2002-12-04 | DDG Gesellschaft für Verkehrsdaten mbH | Method to detect a traffic situation |
EP1262934A3 (en) * | 2001-06-01 | 2003-11-05 | DDG Gesellschaft für Verkehrsdaten mbH | Method to detect a traffic situation |
EP1288885A2 (en) * | 2001-08-08 | 2003-03-05 | Pioneer Corporation | Road traffic information processing apparatus and method |
EP1288885A3 (en) * | 2001-08-08 | 2003-10-15 | Pioneer Corporation | Road traffic information processing apparatus and method |
US6947833B2 (en) | 2001-08-08 | 2005-09-20 | Pioneer Corporation | Road traffic information processing apparatus, road traffic information processing method, computer program, and information record medium |
US6963799B2 (en) | 2001-08-08 | 2005-11-08 | Pioneer Corporation | Road traffic information processing apparatus, road traffic information processing method, computer program, and information record medium |
GB2378615B (en) * | 2001-08-09 | 2005-05-18 | Vodafone Plc | Mobile telecommunications systems and methods |
GB2378615A (en) * | 2001-08-09 | 2003-02-12 | Vodafone Plc | Automatic answering service depending on location |
EP1413999A1 (en) * | 2002-10-21 | 2004-04-28 | DDG Gesellschaft für Verkehrsdaten mbH | Method to generate implicit information from FCD |
WO2004070676A1 (en) * | 2003-01-30 | 2004-08-19 | Binary Protocol Llc | Acquiring, managing, distributing, and presenting contextual data relating to a known position for location-based services to and between users |
EP1742189A3 (en) * | 2005-06-29 | 2009-10-28 | Nissan Motor Company Limited | Traffic jam prediction |
DE202010004382U1 (en) | 2010-03-30 | 2010-08-12 | Audio Mobil Elektronik Gmbh | FCD system |
DE202010004383U1 (en) | 2010-03-30 | 2010-08-12 | Audio Mobil Elektronik Gmbh | FCD device |
BE1019524A3 (en) * | 2010-09-30 | 2012-08-07 | Be Mobile Nv | SYSTEM AND METHOD FOR TRAVEL TIME MEASUREMENT. |
CN104064049A (en) * | 2014-06-20 | 2014-09-24 | 昆明理工大学 | Intelligent traffic road capacity reporting system through short messages |
Also Published As
Publication number | Publication date |
---|---|
TW367473B (en) | 1999-08-21 |
DE59703258D1 (en) | 2001-05-03 |
EP1012809A1 (en) | 2000-06-28 |
AU4697497A (en) | 1999-05-31 |
EP1012809B1 (en) | 2001-03-28 |
ATE200158T1 (en) | 2001-04-15 |
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