WO2009003748A1 - Procédé de détermination approximative continue des plages d'émission - Google Patents

Procédé de détermination approximative continue des plages d'émission Download PDF

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Publication number
WO2009003748A1
WO2009003748A1 PCT/EP2008/055675 EP2008055675W WO2009003748A1 WO 2009003748 A1 WO2009003748 A1 WO 2009003748A1 EP 2008055675 W EP2008055675 W EP 2008055675W WO 2009003748 A1 WO2009003748 A1 WO 2009003748A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission range
approximated
coordinates
point
center
Prior art date
Application number
PCT/EP2008/055675
Other languages
German (de)
English (en)
Inventor
Maylin Wartenberg
Michael Laedke
Ulrich Kersken
Matthias Bobe
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP08759461A priority Critical patent/EP2171892A1/fr
Publication of WO2009003748A1 publication Critical patent/WO2009003748A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H04H60/42—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast areas

Definitions

  • the present invention relates to a method according to the preamble of claim 1.
  • Known receivers for broadcast signals in vehicles in particular in motor vehicles, have facilities which make it possible to evaluate additional data contained in the receivable broadcast signals and to make them accessible to the user by means of a display, for example.
  • RDS Radio Data System or Radio Data System
  • broadcast signals broadcast by RDS stations include digital auxiliary signals in addition to the usual audio signals.
  • station identification PI Program Information
  • TMC Traffic Message Channel
  • TMC messages broadcast by the broadcasters can be used for display, route search and / or warning.
  • a station list is first determined by a so-called "band scan”. This searches for TMC-enabled senders by all
  • Frequencies are very time consuming and can be aborted as soon as a TMC-capable transmitter is found.
  • a list of all suitable transmitters can be created and presented to the user. If a particular radio station is selected, updating the station list is no longer possible because the tuner is busy. If the reception area of the transmitter is left, a tape scan must be performed again.
  • a separate tuner can be used to update the station list.
  • this dynamically updated station list if no TMC station is currently being received or if the reception is deteriorating, it is possible to switch to another TMC station.
  • both single-tuner systems and multi-tuner systems must search along the route, which means that it is time-consuming to check the entire frequency band.
  • the object of the present invention is to further develop a method of the type mentioned in the technical field such that a transmitter landscape, in particular a TMC transmitter landscape, is displayed in this way in that, depending on the respective position of the vehicle, a selection of the best possible transmitters is made available and, moreover, an alternative to the storage of absolute frequencies is provided.
  • the present invention is based on at least one circular approximation for determining transmission ranges; This means that the reception areas of transmitters, in particular of TMC transmitters, are approximated in a circle, so that the transmitter landscape can be imaged, in particular constructed and / or maintained, with the aid of such circular approximations of the transmission areas.
  • a transmission range can have one or more circular approximations for individual transmitters;
  • a frequency is stored by a transmitter identifier, for example in RDS-TMC by a so-called program identifier or PI code.
  • the entire transmission range is preferably achieved by a uniform transmitter identifier transmitted in the data stream, for example by a standard transmitter identifier
  • RDS-TMC stream (so-called RDS-TMC stream) transmitted unified Program Identifier, and described by the frequencies of each transmitter.
  • the transmission range determined according to the invention can be used to control one or more tuners in order to avoid waiting times. In this way it is later possible to make the control of the tuner dependent on whether messages from the same range ( ⁇ -> identical transmitter identifier, in particular identical PI code, different transmitter frequencies possible) or from another range ( ⁇ -> different station identification, in particular different Pl code, for example other federal state) to be received.
  • a transmission range can be defined by transmitter approximation, optionally a frequency, a midpoint coordinate and one to a maximum of three edge points (entry and exit points) and used for storage.
  • transmission ranges can expediently be combined into an entire transmission range, whereby this entire transmission range is then identified by a transmitter identification, multiple frequencies, multiple midpoint coordinates, and associated edge points.
  • a transmitter landscape can be built up gradually, wherein already during the construction of the
  • Transmitter landscape first recommendations can be given.
  • the method according to the present invention can also be used to update and thus maintain an already existing transmitter landscape.
  • a use of the present invention for updating or for maintaining an already existing transmitter landscape the respective transmission range can also be provided initially.
  • new or no longer existing transmission ranges can be detected and thus inserted or removed with the present invention.
  • the setup of a transmitter landscape can not use the updates when entering a new transmission range if the vehicle is still in another transmission range.
  • the reference or starting point is stored as the center of the first selected transmission range.
  • Vehicle is retracted in a new transmission range, which has not yet a midpoint, this center is determined on the straight line, which is formed by the entrance coordinate and the previously set center.
  • a fixed, For example, average, value or the distance from the previously set center point to the entry coordinate or to the exit coordinate of the previous transmission area can be defined, whichever is present and possibly shorter.
  • the position of the center point and the radius can be updated. This is done by taking as the new radius the mean of the distances of the two
  • Boundary points are selected with the current center and the new center is set accordingly.
  • the position of the center point and the radius can be uniquely determined by the three boundary points.
  • the position of the center point and the radius can be uniquely determined by the three boundary points which was driven last; previous edge points can be deleted.
  • the center point and the radius can be updated at intervals by the coordinate of the current position in the calculation of the individual position
  • the description of the transmission ranges can be provided by values are stored persistently by radii and by the respective designation or marking of the transmitter after switching off, so that the values are immediately available after switching on.
  • the present invention has a number of advantages.
  • the person skilled in the art will appreciate the use, in particular the device-internal implementation, of the above-described efficient algorithm for determining the transmission ranges, among other things, in that transmission ranges can be at least approximated after first driving through them.
  • the present invention also allows an efficient storage of transmission areas, as only center coordinates, - one or more, preferably a maximum of three, (determined by input and output coordinates) edge points and
  • the center coordinates defining the respective transmission area as well as radii resulting from the boundary points are updated and specified with each passing through, whereby however
  • PI codes program identifier codes
  • the time for the station search in particular for the TMC station search, can be significantly reduced, in particular in the case of single-tuner systems. If the destination is known, in certain constellations a receiver with weaker reception is preferred for the dynamization if the planned route course runs in this direction.
  • the present invention allows, for example, compared to the search of transmitters (so-called bandscan) targeted switching to a new TMC-capable transmitter, which in particular in single-tuner systems a longer interruption of the message reception can be avoided by immediate switching;
  • the search time can also be advantageously reduced by means of the present invention if an area in which TMC reception is not possible is driven into a TMC broadcast area.
  • station selection may be made taking into account the route history. This makes it expedient to avoid station changes, which reduces the risk of inconsistent traffic reports.
  • the present invention further relates to a computer program product, comprising at least one program part for carrying out a method according to the above-described type.
  • This program part can be loaded into at least one driver assistance system or navigation system and / or implemented in at least one driver assistance system or navigation system.
  • the present invention further relates to a machine-readable, in particular computer-readable, data carrier on which at least one computer program product is recorded and / or stored according to the above-described type.
  • This data carrier can be provided for updating and / or updating at least one driver assistance system or navigation system.
  • the present invention relates to the use of a method according to the kind set out above and / or at least one computer program product according to the kind set out above and / or at least one machine-readable, in particular computer-readable, data carrier of the kind set forth above in at least one motor vehicle, optionally a driver assistance system or navigation system has.
  • FIG. 1 is a schematic representation of an exemplary embodiment of a flow chart of a method according to the present invention
  • 2A is a schematic representation of an example of a first phase or first stage of the approximate determination of the respective transmission range of two transmitters according to the method of the present invention
  • 2B is a schematic representation of an example of a second phase or second stage of the approximate determination of the respective transmission range of two transmitters according to the method of the present invention
  • 2C is a schematic representation of an example of a third phase or third stage of the approximate determination of the respective transmission range of two transmitters according to the method of the present invention
  • 2D is a schematic illustration of an example of a fourth phase or fourth stage of the approximate determination of the respective transmission range of two transmitters according to the method of the present invention.
  • 2E schematically shows an example of a fifth phase or fifth stage of the approximate determination of the respective transmission range of two transmitters according to the method of the present invention.
  • FIG. 1 to FIG. 2E The same or similar embodiments, elements or features are provided in FIG. 1 to FIG. 2E with identical or corresponding reference numerals.
  • the exemplary schematic flow diagram of the method according to the present invention shown in FIG. 1 provides the basis for a possible implementation in a terminal, for example in a driver assistance system or in a navigation system, and is based on the fact that tel points and the radii of the respectively to be determined transmission ranges are determined or updated at each retraction or at each exit.
  • reference symbol [g] designates the end of the method sequence illustrated with reference to FIG.
  • the starting position for the route R, which is driven by the vehicle is identified as a reference or starting point SP and is located in the first transmission range S1.
  • the driver of the vehicle now first enters the second transmission range S2 without first leaving the first transmission range S1.
  • the entry point 12 into the second transmission range S2 is stored, and a first approximation 1A2 provided for the second transmission range S2 can be made.
  • the center M2 of the second transmission range S2 is set on the straight line through the reference or starting point SP and the entry point 12 into the second transmission range S2.
  • the radius of the first approximation 1 A2 is here a fixed predetermined value.
  • the driver of the vehicle continues to follow the route R and leaves the first transmission range S1 at the exit point 01, which is stored; a first approximation 1A1 provided for the first transmission range S1 can be determined.
  • the center M1 of the first transmission area S1 the reference or starting point SP is used, and the radius of the first transmission area S1 is determined based on the distance from the center M1 of the first transmission area S1 to the exit point 01 from the first transmission area S1.
  • the driver of the vehicle now leaves the first approximation 1 A2 of the second transmission range S2, but not the actual second transmission range S2, and the position of the center M2 of the second transmission range S2 and thus the radius of the second transmission range S2 second transmission range S2 can be updated. From the
  • the driver of the vehicle In order to arrive at a second-order approximation of the second transmission range S2 in the fourth phase of the method sequence illustrated with reference to FIG. 2D, the driver of the vehicle must leave the second transmission range S2 at a point 02 other than the previous entry point 12. Now follows the second approximation 2A2. From the distances from the center M2 of the first approximation 1A2 to the previous entry point 12 and to the exit point 02, a mean value is calculated according to the procedure of the update; this mean is the new radius. Thus, the new center M2 'of the second approximation 2A2 can be set accordingly.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Navigation (AREA)
  • Transmitters (AREA)

Abstract

L'invention permet d'améliorer un procédé de détermination approximative continue de la plage d'émission (S1, S2) respective d'émetteurs, notamment d'émetteurs RDS et/ou de chaînes d'émetteurs RDS, pour au moins un récepteur ou un tuner à utiliser dans un véhicule qui se déplace le long d'un trajet (R), notamment dans un véhicule automobile, en ce qu'un environnement d'émetteurs, notamment un environnement d'émetteurs TMC, est configuré de manière à réaliser une sélection des meilleurs émetteurs possibles en fonction de la position correspondante du véhicule et à offrir en plus de cela une variante permettant de mémoriser des fréquences absolues. Conformément à l'invention, la plage d'émission (S1, S2) respective est déterminée par approximation circulaire.
PCT/EP2008/055675 2007-06-29 2008-05-08 Procédé de détermination approximative continue des plages d'émission WO2009003748A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08759461A EP2171892A1 (fr) 2007-06-29 2008-05-08 Procédé de détermination approximative continue des plages d'émission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030228.4 2007-06-29
DE200710030228 DE102007030228A1 (de) 2007-06-29 2007-06-29 Verfahren zum kontinuierlichen approximativen Bestimmen von Sendebereichen

Publications (1)

Publication Number Publication Date
WO2009003748A1 true WO2009003748A1 (fr) 2009-01-08

Family

ID=39723698

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/055675 WO2009003748A1 (fr) 2007-06-29 2008-05-08 Procédé de détermination approximative continue des plages d'émission

Country Status (3)

Country Link
EP (1) EP2171892A1 (fr)
DE (1) DE102007030228A1 (fr)
WO (1) WO2009003748A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015155179A1 (fr) * 2014-04-07 2015-10-15 Hirschmann Car Communication Gmbh Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137000A1 (de) * 1991-11-11 1993-05-13 Opel Adam Ag Verfahren zur feldstaerkeabhaengigen auswertung von rundfunkinformationen fuer fahrzeuge
EP0892514A2 (fr) * 1997-07-16 1999-01-20 Robert Bosch Gmbh Méthode pour sélectionner des messages numériques concernant la circulation du traffic
EP1139065A2 (fr) * 2000-03-30 2001-10-04 Mannesmann VDO Aktiengesellschaft Méthode pour sélectionner un émetteur radio pour navigation véhiculaire dynamique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137000A1 (de) * 1991-11-11 1993-05-13 Opel Adam Ag Verfahren zur feldstaerkeabhaengigen auswertung von rundfunkinformationen fuer fahrzeuge
EP0892514A2 (fr) * 1997-07-16 1999-01-20 Robert Bosch Gmbh Méthode pour sélectionner des messages numériques concernant la circulation du traffic
EP1139065A2 (fr) * 2000-03-30 2001-10-04 Mannesmann VDO Aktiengesellschaft Méthode pour sélectionner un émetteur radio pour navigation véhiculaire dynamique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015155179A1 (fr) * 2014-04-07 2015-10-15 Hirschmann Car Communication Gmbh Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile

Also Published As

Publication number Publication date
EP2171892A1 (fr) 2010-04-07
DE102007030228A1 (de) 2009-02-05

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