CN100372266C - Service method of passenger information system - Google Patents
Service method of passenger information system Download PDFInfo
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- CN100372266C CN100372266C CNB031061060A CN03106106A CN100372266C CN 100372266 C CN100372266 C CN 100372266C CN B031061060 A CNB031061060 A CN B031061060A CN 03106106 A CN03106106 A CN 03106106A CN 100372266 C CN100372266 C CN 100372266C
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- rse
- local zone
- time
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
-
- 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
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A passenger information service method used for a passenger information system (TIS) is provided, in which a DSRC server receives signals came from a vehicular device (OBE), extracts time values from the signals, and calculates an operation time of a predetermined region by using these time values. In the passenger information service method of the invention, the operation time of the predetermined region is calculated according to time values extracted from a first and a last broadcasting signal received by two RSEs, thereby traffic flow and path usable information generated from these data are very reliable.
Description
Technical field
The present invention relates to intelligent transportation system (ITS), and relate to the passenger information method of servicing of passenger information system (TIS) particularly.
Background technology
Intelligent transportation system (ITS) comprises from the various technology of information processing and communicate by letter traffic control device and electronic installation.These technology at first are introduced into as solving conflicting between growing travelling demand and the transportation infrastructure deficiency.
When being applied to current transportation system, ITS can help improve fail safe, it is crowded to reduce, strengthen mobility, reduce to environment influence, save the energy and improve economic productivity.
ITS can be divided into several fields, promptly senior traffic control system (ATMS), senior mass transit system (APTS), passenger information system (TIS), senior rural transportation system (ARTS), commerial vehicle operation system (CVO), the control of senior vehicle and safety system (AVCSS), automatic high speed highway system (AHS) etc.
Wherein, TIS is that a use " vehicle-roadside mechanics of communication " comes to provide technical field about the information of road condition and route availability to the passenger.
Dedicated Short Range Communications, (DSRC) relates to uses the wireless set that low-cost vehicle-roadside two-way communication is provided.This transceiver can have the optional serial port that is connected to vehicle-mounted Local Area Network.The base station, roadside is connected to national wide area network (WAN) by wired or wireless link.
The base station, roadside is installed in the specific region along road, and the transceiver communication of each base station and vehicle is in order to gather the data about condition of road surface when vehicle passes through the overlay area of base station.
The base station, roadside sends to an information server with the data that collect, and information server is generally analyzed the data that receive from all base stations, roadside, provides information about condition of road surface and route availability in any time that needs information to the passenger.
A critical data that generates condition of road surface and route availability information is the time, and promptly vehicle runs to the section running time in another place from the three unities.
But in traditional TIS, the basic place that is used for defining section is arbitrarily to determine at mutual (two-way) communication zone (wherein vehicle can receive information from the base station) of base station, so that section (i.e. distance between two basic places) is coarse, and section running time is to calculate in the mode of adding up.Therefore, from the data of inaccuracy and statistics, be difficult to produce reliable condition of road surface and route availability information.
Summary of the invention
The present invention is devoted to address the above problem.
The passenger information method of servicing that the purpose of this invention is to provide the enhancing of a kind of passenger information service (TIS), it can provide reliable condition of road surface and route availability information.
To achieve these goals, passenger information system of the present invention (TIS) passenger information method of servicing comprises: receive the signal from mobile unit (OBE), extraction time is worth from these signals, uses these time values to calculate the running time of predetermined segment.
These time values comprise: a RSE-first local zone time (t1) that extracts from first broadcast singal that a RSE receives, the last local zone time of a RSE-(t3) that from the Last call signal that a RSE receives, extracts, and the 2nd RSE-first local zone time (t4) that from first broadcast singal that the 2nd RSE receives, extracts.
Be running time: section running time (Ta), service area running time (Tb), and running time (Tc) between service area.
By from the 2nd RSE-first local zone time (t4), deducting a RSE-first local zone time (t1), thereby calculate section running time (Ta).
By from the last local zone time of a RSE-(t3), deducting a RSE-first local zone time (t1), thereby calculate service area running time (Tb).
By from the 2nd RSE-first local zone time (t4), deducting the last local zone time of a RSE-(t3), thereby calculate running time between service area (Tc).
Description of drawings
Accompanying drawing helps to understand better the present invention, and in this part in conjunction with formation the application,
The description of drawings embodiments of the invention and and specification explain principle of the present invention together, in the accompanying drawing:
Fig. 1 has represented to adopt the schematic diagram of a passenger information system (TIS) of traffic data collection method of the present invention;
Fig. 2 is the concept map of passenger information method of servicing in accordance with a preferred embodiment of the present invention;
Fig. 3 is the flow chart of passenger information method of servicing according to the preferred embodiment of the invention; And
Fig. 4 is the flow chart of the traffic data collection program of passenger information method of servicing among Fig. 3.
Embodiment
Hereinafter with reference to accompanying drawing a preferred embodiment of the present invention is described.
Fig. 1 has represented to adopt the schematic diagram of a passenger information system (TIS) of traffic data collection method of the present invention.As shown in Figure 1, this TIS comprises: a plurality of roadside equipment (RSE) 121,122 and 123 of installing along the roadside, road are used for communicating by letter with the mobile unit that is installed in vehicle (OBE) 110 by radio channel; DSRC server 130 is connected to RSE 121,122 and 123, is used to gather traffic data; Passenger information server 140 is communicated by letter with DSRC server 130, and traffic data is carried out aggregate analysis.
Each RSE 121 (122 or 123) can use multiple access protocol, as TDMA/FDD or TDMA/TDD cut-in method, by 1 channel, communicate with the maximum data rate of 1Mbps and a plurality of OBE 110 of vehicle, and use industrial science and medical (ISM) audio range frequency and small-power radio frequency to carry out junction service.
RSE 121,122 and 123 is with predetermined interval (500 milliseconds-several seconds) broadcast singal, and this signal comprises the data such as RSE local zone time and RSE ID.When the DSRC zone (broadcast area) of the sequence of cars ground with OBE 110 by limiting by RSE 121,122 and 123, OBE 110 receives the broadcast singal from each RSE 121 (122 or 123), and will be included in first and the Last call signal in RSE local zone time and RSE ID store in the memory of OBE 110.Then, when vehicle enters the coverage of service RSE, OBE110 sends RSE local zone time and the RSE ID extract from first and the Last call signal of last RSE, with RSE local zone time and the RSE ID that extracts from first broadcast singal of the RSE that serving.
DSRC server 130 image data are promptly gathered the RSE local zone time and the RSE ID that receive from OBE 110 by RSE 121,122 and 123, and the data of gathering are sent to passenger information server 140.
140 pairs of data that receive from DSRC server 130 of passenger information server are analyzed, and based on the passenger information of these data computation particular section.
In response to passenger's service request, reach the RSE121 (122 or 123) that is serving by DSRC server 130 passenger information is offered OBE 110.
Fig. 2 is the concept map of passenger information method of servicing in accordance with a preferred embodiment of the present invention.
As shown in Figure 2, first and second RSE 121,122 is installed in each crossing crossroad with main stem road " S ", and the vehicle that OBE is housed crosses main stem road " S ", thereby sequentially passes through the overlay area of a RSE 121 and the 2nd RSE 122.Each RSE 121 (122) has a service area 30 (40), and OBE 110 only can receive the broadcast singal from RSE 121 (122) in this zone; And a service area 35 (45), OBE 110 and RSE 121 (122) interactive communication each other in this zone.
For the purpose of simplifying the description, suppose that the service area 30 (40) of each RSE 121 (122) and service area 35 (45) are circle, the radius R 1 of service area 30 (40) is greater than the radius R 2 of service area 35 (45).And suppose that a RSE 121 and the 2nd RSE 122 have identical service area radius and service area radius.
In Fig. 2, consider that distance L 1 between the center, two crossroads is substantially equal to the distance L 2 between the some D on the edge of service area 40 of some A on the edge of service area 30 of a RSE 121 and the 2nd RSE 122.Therefore, vehicle approximates vehicle through the used time of distance L 2 through the 1 used time of distance L.
Each A (D) and the some C (F) of OBE 110 on the edge of the service area 30 (40) of first (the second) RSE locates to receive first and the Last call signal, and when the service area 35 (45) of vehicle by the RSE that serving, locate the RSE of current service is sent service request signal at a B (E).In fact, can on any position in the comunication area 37 (47), provide the passenger information service, thereby some B (E) can be arranged on any position in the comunication area 37 (47).Parametric t 1 to t6 is the time of vehicle when passing through each A to F on the S of main stem road.
In case the service area 30 that the vehicle of OBE 110 enters RSE 121 is housed, OBE 110 receives first broadcast singal from a RSE 121 on an A.OBE 110 extracts RSE ID and RSE local zone time from first broadcast singal, and utilizes these RSE ID and the RSE local zone time undated parameter RSE ID that extracts from first broadcast singal of a RSE 121
FIRSTAnd t1.
If vehicle enters service area 35 behind the edge of the service area 30 by a RSE 121, then 110 couples the one RSE 121 of the OBE of vehicle send service request signal.This service request signal comprises data, RSE ID (initial value: 0) as OBE ID, vehicle model, last RSE, RSE local zone time (the initial value: 0s) that from first and the Last call signal of last RSE, extracts, RSE ID that from first broadcast singal of a RSE 121, extracts and RSE local zone time (initial value: 0), and the successful service time of reception that when service is provided by a RSE 121 at a B place.
In the comunication area 37, determine successfully to provide the some B of service according to the radio environment of service area 35.
Then, OBE 110 extracts the RSE local zone time from received the Last call signal that comes by a RSE 121 on a C, and with this RSE local zone time undated parameter t3.
Behind the service area 30 that rolls a RSE 121 away from, vehicle advances unceasingly, enters the service area 40 of the 2nd RSE 122.If vehicle arrives the some D on service area 40 edges, then OBE 110 receives first broadcast singal from the 2nd RSE 122, from first broadcast singal of the 2nd RES 122, extract RSE ID and RSE local zone time, and utilize RSE ID and the RSE local zone time undated parameter RSEID that from first broadcast singal of the 2nd RES122, extracts
SECONDAnd t4.
Then, vehicle enters the comunication area 47 in the service area 45 of the 2nd RSE 122, and 110 couples the 2nd RSE 122 of OBE send service request.The RSE ID of the RSE 121 that this service request signal comprises OBEID, vehicle model, extract from first and the Last call signal of a RSE 121
FIRST, RSE local zone time t1 and t3, the RSEID of the 2nd RSE 122
SECONDReach successfully t5 service time.
At last, when the border of the service area 40 of vehicle by RSE B, OBE 110 stores local zone time t6 on a F, if there is not broadcast singal in the given time, then OBE utilizes RSE ID
SECOND, t4 and t6 upgrade RSE ID
FIRST, t1 and t3.
When vehicle passed through other RSE, the OBE 110 and the RSE of vehicle repeatedly carried out said procedure.
If receive the service request signal from OBE 110, then a RSE 121 and the 2nd RSE 122 send to DSRC server 130 (see figure 1)s to the data that receive by service request signal.DSRC server 130 is gathered the data from a RSE 121 and the 2nd RSE 122, and the data of gathering are sent to passenger information server 140 (see figure 1)s.
Ta＝t4-t1
Tb＝t3-t1
Tc＝t4-t3
Wherein because the distance L 1 between two crossroads equals the distance L 2 between an A and the some D, so the 2 used times of vehicle ' distance L approximate the 1 used time of vehicle ' distance L (t5-t2).
Hereinafter with reference to Fig. 2, Fig. 3 and Fig. 4 passenger information method of servicing is according to the preferred embodiment of the invention described in more detail.
Fig. 3 is the flow chart of passenger information method of servicing according to the preferred embodiment of the invention.
In Fig. 3, DSRC server 130 is by first and second RSE121 and 122 data of gathering from OBE on step S101.These data comprise: a RSE ID (RSEID
FIRST), a RSE-first local zone time (t1) that from first broadcast singal that a RSE 121 receives, extracts, the last local zone time of a RSE-(t3) that from the Last call signal that a RSE 121 receives, extracts, the 2nd RSE ID (RSE ID
SECOND), and the 2nd RSE-first local zone time (t4) that from first broadcast singal that the 2nd RSE 122 receives, extracts.Then, on step S102, S103 and S104, DSRC server 130 uses running time (Tc) between following formula calculation of sector running time (Ta), service area running time (Tb) and service area based on these data:
Ta＝t4-t1
Tb＝t3-t1
Tc＝t4-t3
Calculating between section running time, service area running time and service area after running time, on step S105, DSRC server 130 sends to passenger information server 140 with result of calculation.
Certainly, can directly be used as transport information running time itself between section running time, service area running time and service area.
Fig. 4 is the flow chart of the traffic data collection program of passenger information method of servicing among Fig. 3.
In Fig. 4, if being housed, the vehicle of OBE 110 (see figure 1)s just pressing arrow W direction running on the S of main stem road the time, OBE 110 receives the broadcast singal from a RSE 121 on step S201, then OBE extracts RSE ID and RSE local zone time from broadcast singal on step S202, and, do not have RSE ID if middle at the fixed time OBE 110 receives
FIRSTBroadcast singal, then on step S203 with RSE ID and RSE local zone time as RSEID
FIRSTReach t1 and store, OBE 110 will be from having the RSE ID that receives from a RSE 121 at last on step S204
FIRSTBroadcast singal in the RSE local zone time that extracts store as t3.When vehicle passed through the service area of a RSE 121,110 couples the one RSE 121 of OBE sent service request signal, and received the passenger information signal from a RSE 121 on any position (see figure 2) in the comunication area 37.
Then, when vehicle enters the service area 40 of the 2nd RSE 122, the broadcast singal that OBE 110 receives from the 2nd RSE 122 on step S205.On step S206, OBE extracts RSE ID and the RSE local zone time of the 2nd RSE 122 from broadcast singal, and with this RSE ID and RSE local zone time as RSE ID
SECONDAnd t4 storage.Then, when passing through the service area 45 of the 2nd RSE 122, OBE sends to the 2nd RSE 122 and comprises RSE ID on step S207
FIRST, t1, t3, RSE ID
SECONDReach the service request signal of t4, and receive passenger information signal on any position in the comunication area 47 from the 2nd RSE 122.
At last, if receiving, middle at the fixed time OBE 110 do not have RSE ID
SECONDBroadcast singal, then OBE 110 will be from having the RSE ID that the 2nd RSE 122 receives at last on step S208
SECONDBroadcast singal in the RSE local zone time that extracts store as t6, utilize RSE ID then
SECOND, t4 and t6 upgrade RSE ID
FIRST, t1 and t3, and on step S209 this local zone time of storage.
When vehicle passed through each RSE, OBE 110 repeatedly carried out said procedure in the same manner.
As mentioned above, in passenger information method of servicing of the present invention, according to the some place at early-fixed on the service area edge of two RSE receive first and calculation of sector running time time, service area running time and the service area of Last call signal between running time, accurate relatively by the traffic data that OBE gathers, condition of road surface and the route availability information that produces based on these precise informations becomes very reliable thus.
Though the present invention is had been described in detail according to specific preferred embodiment, those skilled in the art will appreciate that under the situation of the spirit and scope of the invention that does not break away from claims and limited, can carry out the variation on various forms and the details.
Claims (8)
1. passenger information method of servicing that is used for passenger information system TIS comprises:
Reception is from the signal of mobile unit OBE;
Extracting parameter from these signals; And
Use the running time of these calculation of parameter predetermined segment,
Based on the running time of calculating, for mobile unit provides information service,
Wherein said parameter comprises: the first via edge equipment-first local zone time t1 that extracts from first broadcast singal that first via edge equipment RSE receives, the first via edge equipment that from the Last call signal that first via edge equipment receives, extracts-last local zone time t3, and the second roadside equipment-first local zone time t4 that from first broadcast singal that second roadside equipment receives, extracts.
2. comprise described running time according to the process of claim 1 wherein: section running time T a, service area running time T b, and running time T c between service area.
3. according to the method for claim 2, wherein, by from second roadside equipment-first local zone time t4, deducting first via edge equipment-first local zone time t1 and calculation of sector running time T a.
4. according to the method for claim 2, wherein, calculate service area running time T b by from first via edge equipment-last local zone time t3, deducting first via edge equipment-first local zone time t1.
5. according to the method for claim 2, wherein, calculate running time T c between service area by from second roadside equipment-first local zone time t4, deducting first via edge equipment-last local zone time t3.
6. according to the method for claim 2, wherein calculate running time between described section running time, service area running time and service area by following formula:
Ta＝t4-t1
Tb=t3-t1, and
Tc＝t4-t3。
7. according to the process of claim 1 wherein that described parameter also comprises: the first via edge equipment ID RSE ID that from first broadcast singal that first via edge equipment receives, extracts
FIRSTAnd the second roadside equipment ID RSEID that from first broadcast singal that second roadside equipment receives, extracts
SECOND
8. according to the process of claim 1 wherein that the step of extracting parameter also comprises from signal:
Receive first broadcast singal from first via edge equipment;
From first broadcast singal of first via edge equipment, extract roadside equipment ID and roadside equipment local zone time, and with this roadside equipment ID and roadside equipment local zone time as RSE ID
FIRSTAnd t1 is stored in the memory of mobile unit;
Receive the Last call signal from first via edge equipment;
From the Last call signal that receives at last of first via edge equipment, extract the roadside equipment local zone time, do not have RSE ID if middle at the fixed time mobile unit receives
FIRSTBroadcast singal, then this roadside equipment local zone time is stored as t3;
Receive first broadcast singal from second roadside equipment;
From first broadcast singal of second roadside equipment, extract roadside equipment ID and roadside equipment local zone time, and with this roadside equipment ID and roadside equipment local zone time as RSE ID
SECONDAnd t4 is stored in the memory;
With RSE ID
FIRST, t1, t3, RSE ID
SECOND, t4 sends to second roadside equipment;
From the broadcast singal that receives at last of second roadside equipment, extract the roadside equipment local zone time, do not have RSE ID if middle at the fixed time mobile unit receives
SECONDBroadcast singal, then this roadside equipment local zone time is stored as t6; And
Use RSE ID
SECOND, t4 and t6 upgrade RSE ID
FIRST, t1 and t3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR09778/2002 | 2002-02-23 | ||
| KR1020020009778A KR100801914B1 (en) | 2002-02-23 | 2002-02-23 | Traffic flow decision method for dedicated short range communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1440140A CN1440140A (en) | 2003-09-03 |
| CN100372266C true CN100372266C (en) | 2008-02-27 |
Family
ID=27800641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031061060A Expired - Fee Related CN100372266C (en) | 2002-02-23 | 2003-02-20 | Service method of passenger information system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100801914B1 (en) |
| CN (1) | CN100372266C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI410905B (en) * | 2008-12-12 | 2013-10-01 | Syscom Comp Engineering Co | Method and system for determining vehicle trip |
| EP3389291A1 (en) * | 2017-04-13 | 2018-10-17 | Deutsche Telekom AG | Communicating between a vehicle and a plurality of road-side devices |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819041A (en) * | 1981-07-24 | 1983-02-03 | Omron Tateisi Electronics Co | Car communication controlling system |
| JPH07160992A (en) * | 1993-12-10 | 1995-06-23 | Mitsubishi Electric Corp | Traffic information system, and central processing unit and on-vehicle equipment in the system |
| CN1037921C (en) * | 1994-11-15 | 1998-04-01 | 孙为国 | Traffic administration system |
| JPH112536A (en) * | 1997-06-12 | 1999-01-06 | Alpine Electron Inc | Route retrieving method of on board navigation system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100339826B1 (en) * | 1999-10-20 | 2002-06-07 | 박노춘 | Linked traffic flow collecting method and apparatus by using RFID |
| KR20010086969A (en) * | 2000-03-06 | 2001-09-15 | 이계철 | Traffic information collection/offer system and method using dsrc |
| KR20020050170A (en) * | 2000-12-19 | 2002-06-26 | 엘지전자 주식회사 | System and method for giving the information of traffic |
| KR100421364B1 (en) * | 2000-12-22 | 2004-03-09 | 엘지전자 주식회사 | Traffic control apparatus using the dedicated short range communication |
-
2002
- 2002-02-23 KR KR1020020009778A patent/KR100801914B1/en not_active IP Right Cessation
-
2003
- 2003-02-20 CN CNB031061060A patent/CN100372266C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819041A (en) * | 1981-07-24 | 1983-02-03 | Omron Tateisi Electronics Co | Car communication controlling system |
| JPH07160992A (en) * | 1993-12-10 | 1995-06-23 | Mitsubishi Electric Corp | Traffic information system, and central processing unit and on-vehicle equipment in the system |
| CN1037921C (en) * | 1994-11-15 | 1998-04-01 | 孙为国 | Traffic administration system |
| JPH112536A (en) * | 1997-06-12 | 1999-01-06 | Alpine Electron Inc | Route retrieving method of on board navigation system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI410905B (en) * | 2008-12-12 | 2013-10-01 | Syscom Comp Engineering Co | Method and system for determining vehicle trip |
| EP3389291A1 (en) * | 2017-04-13 | 2018-10-17 | Deutsche Telekom AG | Communicating between a vehicle and a plurality of road-side devices |
| US10917763B2 (en) | 2017-04-13 | 2021-02-09 | Deutsche Telekom Ag | Communication between vehicle-mounted communication equipment or a vehicle and a plurality of roadside units by transmitting vehicle communication messages |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100801914B1 (en) | 2008-02-12 |
| CN1440140A (en) | 2003-09-03 |
| KR20030070305A (en) | 2003-08-30 |
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Address after: Seoul, South Kerean Patentee after: Novera Optics Korea Co., Ltd. Address before: Seoul, South Kerean Patentee before: LG Nortel Co., Ltd. |
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Granted publication date: 20080227 Termination date: 20120220 |