) Matrise des infos re,cues caracterisee par independence produit) Control of information received, cue characterized by product independence
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La presente invention porte sur un systeme et un procede d'un systeme de commande a GPS a fonction de communication, et plus particulierement sur ltetablissement d'un contact avec differentes stations de base dans differentes zones afin d'obtenir des mises a jour d'etat. Un vehicule muni d'un systeme mondial de radioreperage (GPS) conventionnel do it recevoir un signal de satellite de radioreperage a intervalles de temps predetermines (1, 2...ou 5 secondes, etc.) pour obtenir o la position actuelle du vehicule en longitude et latitude, la vitesse du vehicule, son altitude, etc. Considerons la figure 1. La figure 1 represente le contenu des The present invention relates to a system and method of a GPS control system with a communication function, and more particularly to establishing contact with different base stations in different areas in order to obtain updates from. state. A vehicle equipped with a conventional global positioning system (GPS) must receive a signal from a radiodetermination satellite at predetermined time intervals (1, 2 ... or 5 seconds, etc.) to obtain the current position of the vehicle in longitude and latitude, vehicle speed, altitude, etc. Let us consider figure 1. Figure 1 represents the content of
donnees enregistrees par un enregistreur GPS de l'art anterieur. data recorded by a GPS recorder of the prior art.
s Typiquement, les informations vent appliquees a un systeme de commande a GPS et a une carte electronique qui operent ensemble d'une maniere coordonnee. Lorsqu'il rencontre une situation d'urgence (telle qu'une panne), l'utilisateur doit generalement prendre contact avec un centre de services par un dispositif sans fil (tel qu'un telephone mobile) afin d'entrer o en contact avec la station de base. Le contact peut etre etabli de maniere active par le conducteur, ou automatiquement par le systeme de commande a GPS. Comme la position du vehicule peut varier, la station de base appropriee va aussi varier. Il est done necessaire de proposer un procede ou systeme qui selectionne une station de base appropriee pour ameliorer la s Typically, information is applied to a GPS control system and an electronic map which operate together in a coordinated fashion. When encountering an emergency situation (such as a breakdown), the user must generally contact a service center by a wireless device (such as a mobile phone) in order to get in touch with the base station. Contact can be made actively by the driver, or automatically by the GPS control system. As the position of the vehicle may vary, the appropriate base station will also vary. It is therefore necessary to propose a method or system which selects an appropriate base station to improve the
qualite de communication et pour reduire les couts de communication. quality of communication and to reduce communication costs.
L'objectif de la presente invention est de proposer un procede destine a permettre une communication entre un systeme de commande a GPS et une station de base, pour un systeme installe dans un vehicule. Lorsque le o systeme de commande a GPS doit prendre contact avec la station de base, la presente invention garantit qu'une station de base appropriee est selectionnee afin d'ameliorer la qualite de communication et de reduire les The objective of the present invention is to provide a method for enabling communication between a GPS control system and a base station, for a system installed in a vehicle. When the GPS control system is to contact the base station, the present invention ensures that an appropriate base station is selected in order to improve the quality of communication and reduce the
couts de communication.communication costs.
Un autre objectif de la presente invention est de proposer un procede de recherche rapide d'une station de base appropriee. Selon une forme de Another object of the present invention is to provide a method of rapidly searching for an appropriate base station. According to a form of
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realisation de la presente invention, une information de position pour diverges regions est memorisee dans une base de donnees. La base de donnees utilise au moins un rectangle pour decrire chaque region, et chaque region comprend les coordonnees de deux positions pour definir le rectangle. La vitesse de recherche d'une station de base appropriee est ainsi amelioree. Pour atteindre ces objectifs, le procede de la presente invention comprend les etapes suivantes: o Etape A: obtention des coordonnees de position actuelle du vehicule; Etape B: recherche d'une information de contact d'une station de base relative selon les coordonnees de position actuelle du vehicule, le systeme de commande a GPS incluant une base de donnees, la base de donnees contenant une information de position pour une pluralite de regions et une information de contact pour une pluralite de stations de base associees a la pluralite de regions; et Etape C: definition d'une station de base trouvee en tent que station Realization of the present invention, position information for different regions is stored in a database. The database uses at least one rectangle to describe each region, and each region includes the coordinates of two positions to define the rectangle. The search speed of an appropriate base station is thus improved. To achieve these objectives, the method of the present invention comprises the following steps: o Step A: obtaining the coordinates of the vehicle's current position; Step B: search for contact information of a relative base station according to the current position coordinates of the vehicle, the GPS control system including a database, the database containing position information for a plurality regions and contact information for a plurality of base stations associated with the plurality of regions; and Step C: definition of a base station found in tent that station
de base a contacter.basic to contact.
o D'autres objectifs, avantages et nouvelles caracteristiques de o Other objectives, advantages and new features of
['invention ressortiront de la description detaillee suivante et des dessins [The invention will become apparent from the following detailed description and from the drawings
joints. La figure 1 represente le contenu des donnees enregistrees par un enregistreur GPS de l'art anterieur; la figure 2 est un schema d'application d'une forme de realisation de la presente invention; la figure 3 est un schema synoptique d'une forme de realisation de la presente invention; so la figure 4 est un organigramme d'une forme de realisation de la presente invention; la figure 5 represente une premiere forme de realisation d'une base de donnees de la presente invention; la figure 6 represente une seconde forme de realisation d'une base de donnees de la presente invention; la figure 7 represente la presente invention utilisant un rectangle principal pour decrire une position de chaque region de la presente invention; la figure 8 est un schema d'une premiere forme de realisation s utilisant un soul-rectangle pour decrire une position d'une region; et la figure 9 est un schema d'une seconde forme de realisation utilisant joints. FIG. 1 represents the content of the data recorded by a prior art GPS recorder; FIG. 2 is a diagram of application of an embodiment of the present invention; Figure 3 is a block diagram of an embodiment of the present invention; so Figure 4 is a flowchart of an embodiment of the present invention; Figure 5 shows a first embodiment of a database of the present invention; Figure 6 shows a second embodiment of a database of the present invention; FIG. 7 represents the present invention using a main rectangle to describe a position of each region of the present invention; Figure 8 is a diagram of a first embodiment using a soul-rectangle to describe a position of a region; and Figure 9 is a diagram of a second embodiment using
un soul-rectangle pour decrire une position d'une region. a soul-rectangle to describe a position of a region.
Considerons la figure 2. La figure 2 est un schema d'application o d'une forme de realisation de la presente invention. Dans cette forme de realisation, un systeme de commande a GPS 10 est installe dans un vehicule 8 (tel qu'un vehicule commercial, un fourgon, un camion, ou autre vehicule automobile). Le vehicule comprend un phare 81, un phare antibrouillard 82, un systeme multimedia 83 qui peut inclure un dispositif audio 831, un dispositif video 832 etc., et un dispositif de communication Consider Figure 2. Figure 2 is an application diagram of an embodiment of the present invention. In this embodiment, a GPS control system 10 is installed in a vehicle 8 (such as a commercial vehicle, a van, a truck, or other motor vehicle). The vehicle includes a headlight 81, a fog light 82, a multimedia system 83 which may include an audio device 831, a video device 832 etc., and a communication device
sans fil 84 (tel qu'un telephone mobile). wireless 84 (such as a mobile phone).
Considerons la figure 3. La figure 3 est un schema synoptique d'une forme de realisation de la presente invention. Les dispositifs mentionnes o plus haut vent connectes respectivement a un microprocesseur 3 par un bus 3 0. Le vehicule 8 comprend en ouke un dispositif GPS 1 et un dispositif de memoire 2 connectes au bus 30. Le systeme de commande a GPS 10 est Consider Figure 3. Figure 3 is a block diagram of an embodiment of the present invention. The above-mentioned devices are connected respectively to a microprocessor 3 by a bus 30. The vehicle 8 comprises, in addition, a GPS device 1 and a memory device 2 connected to the bus 30. The GPS control system 10 is
apte a communiquer avec une station de base par le dispositif sans fil 84. able to communicate with a base station by the wireless device 84.
Lorsque cela est necessaire, la station de base 45 peut envoyer a un centre s de gestion 40 un signal provenant du systeme de commande a GPS 10. La station de base 45 est utilisee comme une station relais, par consequent il peut exister de nombreuses stations de base reparties en diverges positions pour recevoir un signal. La principale caracteristique de la presente invention est d'etre capable de selectionner une station de base appropriee selon la position du vehicule 8, et done d'ameliorer la qualite de When necessary, the base station 45 can send a signal to the management center 40 a signal from the GPS control system 10. The base station 45 is used as a relay station, therefore there may be many stations basic distributed in different positions to receive a signal. The main characteristic of the present invention is to be able to select an appropriate base station according to the position of the vehicle 8, and therefore to improve the quality of
communication et de reduire les couts de communication. communication and reduce communication costs.
Considerons la figure 4. La figure 4 est un organigramrne de la forme de real isati on de la presente invention. Avant que le dispositif sans fi l 8 4 ne communique avec la station de base 45, un traitement conforme a l'organigramme de la figure 4 est execute afin de selectionner une station de base appropriee pour le dispositif sans fil 84. Naturellement, l'organigramme peut etre execute de maniere repetee a intervalles predetermines, par exemple toutes les dix minutes. Les etapes comprennent: s Etape 401: obtention des coordonnees de position actuelle du vehicule 8. Une antenne GPS 11 du dispositif GPS 1 recoit les signaux d'au moins trots satellites de radioreperage 91, 92 et 93 (figure 2), et le microprocesseur 12 effectue des calculs pour obtenir une information de o positionnement global, incluant une valeur de longitude et une valeur de latitude (c'est-a-dire les coordonnees de position du vehicule 8) en fonction Consider Figure 4. Figure 4 is a flow diagram of the embodiment of the present invention. Before the wireless device 8 4 communicates with the base station 45, a processing in accordance with the flow diagram of FIG. 4 is executed in order to select a suitable base station for the wireless device 84. Naturally, the flowchart can be executed repeatedly at predetermined intervals, for example every ten minutes. The steps include: s Step 401: obtaining the current position coordinates of the vehicle 8. A GPS antenna 11 of the GPS device 1 receives the signals from at least three radio-tracking satellite trots 91, 92 and 93 (FIG. 2), and the microprocessor 12 performs calculations to obtain global positioning information, including a longitude value and a latitude value (that is to say the position coordinates of vehicle 8) as a function
des signaux des satellites de radioreperage 91, 92 et 93. signals from radiodetermination satellites 91, 92 and 93.
Etape 402: recherche de ['information de contact d'une station de base relative selon les coordonnees de position actuelle du vehicule 8. Cette etape peut etre executee par n'importe lequel de divers procedes, mais elle doit simplement avoir pour resultat de trouver la station de base la plus proche des coordonnees de position du vehicule 8. Toutefois, parfois la station de base la plus proche n'est pas la meilleure station. A titre d'exemple, aux Etats-Unis, si le vehicule est dans le New Jersey et la station de base la plus proche est dans New York City, la meilleure station de base doit etre une station de base situee dans le New Jersey car les couts Step 402: Searching for contact information of a relative base station according to the current position coordinates of the vehicle 8. This step can be performed by any of a variety of methods, but should simply result in finding the base station closest to the vehicle position coordinates 8. However, sometimes the nearest base station is not the best station. For example, in the United States, if the vehicle is in New Jersey and the nearest base station is in New York City, the best base station should be a base station located in New Jersey because the costs
de communication associes seront moins eleves. associated communications will be lower.
Les etapes 501 a 503 expliquent une forme de realisation de l'etape Steps 501 to 503 explain an embodiment of the step
402. On se rapportera aux figures 5, 6 et 7. 402. Reference is made to FIGS. 5, 6 and 7.
La figure 5 represente une premiere forme de realisation d'une base de donnees 20 de la presente invention. La base de donnees 20 comprend une colonne de coordonnees de rectangle principal 21, une colonne de coordonnees rectangles de soul-rectangle 22, une colonne d'information de Figure 5 shows a first embodiment of a database 20 of the present invention. The database 20 comprises a column of main rectangle coordinates 21, a column of right-angled soul-rectangle coordinates 22, a column of information of
o contact de station de base 23 et une colonne de region 24. o base station contact 23 and a region column 24.
La figure 7 represente la presente invention utilisant un rectangle principal pour decrire une position pour chaque region. La figure 7 represente trots regions, une region A, une region B et une region C. s Chaque region est geree par une station de base relative, telle qu'une station de base 45a, une station de base 45b et une station de base 45c. En outre, s chaque region est contenue a l'interieur d'un rectangle principal relatif, tel qu'un rectangle principal RA, un rectangle principal RB et un rectangle principal RC. L'information de position de chaque rectangle principal comprend les coordonnees de deux positions pour definir le rectangle. En s considerant par exemple la region A, le rectangle principal RA est utilise pour decrire les limites de la region A, et le rectangle principal RA est dehmi par (Xal, Yal) et (Xa2, Ya2). La colonne de coordonnees de rectangle principal 21 est utilisee pour enregistrer les coordonnees des deux Figure 7 shows the present invention using a main rectangle to describe a position for each region. Figure 7 shows three regions, a region A, a region B and a region C. s Each region is managed by a relative base station, such as a base station 45a, a base station 45b and a base station 45c. In addition, each region is contained within a relative main rectangle, such as a main rectangle RA, a main rectangle RB and a main rectangle RC. The position information for each main rectangle includes the coordinates of two positions to define the rectangle. Considering region A, for example, the main rectangle RA is used to describe the boundaries of region A, and the main rectangle RA is defined by (Xal, Yal) and (Xa2, Ya2). The main rectangle coordinate column 21 is used to record the coordinates of the two
positions du rectangle principal.positions of the main rectangle.
Toutefois, il est souvent insuffisant de decrire une region par un rectangle principal; par exemple, lorsque le vehicule 8 se trouve en une position P1 et la position P1 est incluse dans une region commune du rectangle principal RA et du rectangle principal RC. Par consequent, lorsqtle la region commune au rectangle principal RA et au rectangle principal RC est trop etendue, le systeme de commande a GPS 10 ne peut pas precisement decrire la position du vehicule a ['aide d'un seul rectangle .. prlnclpal. o La figure 8 est un schema de la premiere forme de realisation utilisant un soul-rectangle pour decrire une position d'une region. En prenant encore la region A comme exemple, comme represente sur la figure 8, il existe un soul-rectangle RA-1, un soul- rectangle RA-2, un soul-rectangle RA-3, etc. De maniere similaire, ['information de position de chaque rectangle comprend les coordonnees de deux positions pour definir le rectangle. En considerant par exemple le soul-rectangle RA-1, le sous rectangle RA-1 est defini par (Xal 1, Yal 1) et (Xa21, Ya21). La colonne de coordonnees de soul-rectangle 22 est utilisee pour enregistrer les However, it is often insufficient to describe a region with a main rectangle; for example, when the vehicle 8 is in a position P1 and the position P1 is included in a common region of the main rectangle RA and the main rectangle RC. Consequently, when the region common to the main rectangle RA and to the main rectangle RC is too large, the GPS control system 10 cannot precisely describe the position of the vehicle using a single rectangle. Prlnclpal. o Figure 8 is a diagram of the first embodiment using a soul-rectangle to describe a position of a region. Taking still the region A as an example, as represented in FIG. 8, there exists a soul-rectangle RA-1, a soul-rectangle RA-2, a soul-rectangle RA-3, etc. Similarly, the position information for each rectangle includes the coordinates of two positions to define the rectangle. By considering for example the soul-rectangle RA-1, the sub-rectangle RA-1 is defined by (Xal 1, Yal 1) and (Xa21, Ya21). The column of soul-rectangle coordinates 22 is used to record the
coordonnees des deux positions du soul-rectangle. coordinates of the two positions of the rectangle soul.
L'information de contact de la station de base relative 23 est un The contact information of the relative base station 23 is a
numero de telephone.phone number.
Etape 501: recherche dans la base de donnees d'un rectangle Step 501: search in the database of a rectangle
s principal relatif pour les coordonnees de position actuelle du vehicule 8. s relative main for the current position coordinates of the vehicle 8.
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Etape 502: les coordonnees de position actuelle du vehicule 8 sont- Step 502: the current position coordinates of the vehicle 8 are-
elles incluses dans plusieurs rectangles principaux? Si oui, continuer a une included in several main rectangles? If yes, continue to a
etape 503.step 503.
Par exemple, si les coordonnees de position actuelle du vehicule 8 correspondent a la position P1, qui est contenue a la fois par le rectangle principal RA et par le rectangle principal RC, le systeme de commande a GPS 10 doit executer l'etape 503. Mais si les coordonnees de position du vehicule 8 correspondent a la position P2, qui n'est contenue que par le o rectangle principal RA, le systeme de commande a GPS 10 ne doit pas For example, if the current position coordinates of vehicle 8 correspond to position P1, which is contained both by the main rectangle RA and by the main rectangle RC, the GPS control system 10 must execute step 503. But if the position coordinates of the vehicle 8 correspond to the position P2, which is only contained by the main rectangle o, the GPS control system 10 must not
executer l'etape 503.execute step 503.
Etape 503: recherche d'un soul-rectangle relatif d'une region selon Step 503: search for a relative rectangle of a region according to
les coordonnees de position du vehicule 8. vehicle position coordinates 8.
Par exemple, si les coordonnees de position du vehicule 8 correspondent a la position P1, le systeme de commande a GPS 10 recherche dans la colonne relative de coordonnees de soul-rectangle 22 d'une region. De plus petite soul-rectangles peuvent fournir une position For example, if the position coordinates of vehicle 8 correspond to position P1, the GPS control system 10 searches in the relative column of soul-rectangle coordinates 22 of a region. Smaller soul rectangles can provide position
plus precise, mais vent aussi plus couteux en volume de memorisation. more precise, but also more expensive in terms of storage volume.
Etape 403: definition de la station de base trouvee en tent que station de base a contacter. L'information de contact de la station de base a contacter est ['information de contact de la station de base gerant la region trouvee. La station de base trouvee a l'etape 402 va gerer une transmission de signaux entre le vehicule 8 et le centre de gestion. Par exemple, Step 403: definition of the base station found in tent that base station to contact. The contact information of the base station to be contacted is the contact information of the base station managing the region found. The base station found in step 402 will manage a signal transmission between the vehicle 8 and the management center. For example,
['information de contact de la station de base 23 est "818-12345678". The contact information for base station 23 is "818-12345678".
La forme de realisation decrite plus haut peut avoir des variantes suivantes. La fgure 6 represente une seconde forme de realisation d'une base de donnees de la presente invention. Dans cette forme de realisation, la base de donnees 20 ne comporte pas la colonne de coordonnees de rectangle principal 21. Le systeme de commande a GPS 10 recherche la position du The embodiment described above can have the following variants. Figure 6 represents a second embodiment of a database of the present invention. In this embodiment, the database 20 does not include the main rectangle coordinate column 21. The GPS control system 10 searches for the position of the
7 28400767 2840076
vehicule directement dans la colonne de soul-rectangles 22. Ce procede entrame toutefois un plus long temps de recherche d'une station de base approprlee. s La figure 9 est un schema de la seconde forme de realisation utilisant un soul-rectangle pour decrire une position d'une region. La taille de chaque soul-rectangle (represente en trait interrompu) est identique, de vehicle directly in the column of rectangular rectangles 22. This process, however, takes a longer time to find an appropriate base station. s Figure 9 is a diagram of the second embodiment using a soul-rectangle to describe a position of a region. The size of each soul-rectangle (shown in broken lines) is identical, from
sorte que l'ordinateur peut facilement generer chaque soul-rectangle. so the computer can easily generate each soul rectangle.
Toutefois, cette maniere de faire entrame aussi un long temps de recherche. However, this way of doing also starts a long time of research.
o Le systeme de commande a GPS 10 peut executer un algorithme predetermine pour fusionner des soul-rectangles de la meme taille, comme o The GPS 10 control system can execute a predefined algorithm to merge soul-rectangles of the same size, such as
represente sur la figure 8.shown in Figure 8.
L' invention a ete decrite a ['aide de formes de realisation preferees exemplaires. Toutefois, l'homme du metier pourra facilement modifier les formes de realisation preferees pour les adapter a d'autres applications sans s'ecarter de ['esprit et de la portee de cette invention. On comprendra done que la portee de ['invention ne se limite pas aux formes de realisation decrites. Au contraire, elle est destinee a englober diverges modifications et o agencements similaires bases sur le mOme principe de fonctionnement. On The invention has been described using preferred exemplary embodiments. However, those skilled in the art can easily modify the preferred embodiments to adapt them to other applications without departing from the spirit and scope of this invention. It will therefore be understood that the scope of the invention is not limited to the embodiments described. On the contrary, it is intended to include various modifications and similar arrangements based on the same operating principle. We
doit done accorder a la portee des revendications les plus larges must therefore accord to the scope of the widest claims
interpretations afin d'englober toutes ces modifications et agencements similaires. Bien que la presente invention ait ete expliquee a propos de sa forme de realisation preferee, on comprendra que de nombreuses autres modifications et variantes vent possibles sans s'ecarter de ['esprit et de la interpretations in order to encompass all these modifications and similar arrangements. Although the present invention has been explained in connection with its preferred embodiment, it will be understood that many other modifications and variations are possible without departing from the spirit and
portee de ['invention telle qu'elle est revendiquee dans ce qui suit. scope of the invention as claimed in the following.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206150AFR2840076B1 (en) | 2002-05-21 | 2002-05-21 | SYSTEM AND METHOD FOR A GPS COMMUNICATION FUNCTION CONTROL SYSTEM |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206150AFR2840076B1 (en) | 2002-05-21 | 2002-05-21 | SYSTEM AND METHOD FOR A GPS COMMUNICATION FUNCTION CONTROL SYSTEM |
| Publication Number | Publication Date |
|---|---|
| FR2840076A1true FR2840076A1 (en) | 2003-11-28 |
| FR2840076B1 FR2840076B1 (en) | 2006-04-28 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0206150AExpired - Fee RelatedFR2840076B1 (en) | 2002-05-21 | 2002-05-21 | SYSTEM AND METHOD FOR A GPS COMMUNICATION FUNCTION CONTROL SYSTEM |
| Country | Link |
|---|---|
| FR (1) | FR2840076B1 (en) |
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|---|---|---|---|---|
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| DE19646603A1 (en)* | 1996-11-12 | 1997-07-03 | Werner Dipl Ing Sauerland | GPS mobile telephone especially for emergency calls |
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| US6327471B1 (en)* | 1998-02-19 | 2001-12-04 | Conexant Systems, Inc. | Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff |
| US20020034947A1 (en)* | 1998-11-06 | 2002-03-21 | Qualcomm, Inc. | Mobile communication system with position detection to facilitate hard handoff |
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|---|---|---|---|---|
| US5546445A (en)* | 1991-12-26 | 1996-08-13 | Dennison; Everett | Cellular telephone system that uses position of a mobile unit to make call management decisions |
| US5678182A (en)* | 1995-06-19 | 1997-10-14 | Trimble Navigation Limited | Self-locating radio system that automatically configures to the radio regulations for the location |
| DE19646603A1 (en)* | 1996-11-12 | 1997-07-03 | Werner Dipl Ing Sauerland | GPS mobile telephone especially for emergency calls |
| US6327471B1 (en)* | 1998-02-19 | 2001-12-04 | Conexant Systems, Inc. | Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff |
| US20020034947A1 (en)* | 1998-11-06 | 2002-03-21 | Qualcomm, Inc. | Mobile communication system with position detection to facilitate hard handoff |
| Publication number | Publication date |
|---|---|
| FR2840076B1 (en) | 2006-04-28 |
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| PLFP | Fee payment | Year of fee payment:14 | |
| ST | Notification of lapse | Effective date:20170131 |