WO2015155179A1 - Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile - Google Patents

Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile Download PDF

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Publication number
WO2015155179A1
WO2015155179A1 PCT/EP2015/057504 EP2015057504W WO2015155179A1 WO 2015155179 A1 WO2015155179 A1 WO 2015155179A1 EP 2015057504 W EP2015057504 W EP 2015057504W WO 2015155179 A1 WO2015155179 A1 WO 2015155179A1
Authority
WO
WIPO (PCT)
Prior art keywords
location
receiving system
program
mobile receiving
area
Prior art date
Application number
PCT/EP2015/057504
Other languages
German (de)
English (en)
Inventor
Matthias Wefers
Original Assignee
Hirschmann Car Communication 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 Hirschmann Car Communication Gmbh filed Critical Hirschmann Car Communication Gmbh
Priority to EP15718802.0A priority Critical patent/EP3130091A1/fr
Publication of WO2015155179A1 publication Critical patent/WO2015155179A1/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
    • H04H60/49—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 locations
    • H04H60/51—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 locations of receiving stations

Definitions

  • the invention relates to a method for operating a mobile receiving system, wherein the receiving system receives and reproduces various programs broadcast by stationary transmitters, that is, in other words, relates to a method in which the reception of broadcast services depends on the location in a database is stored.
  • the receiving system receives and reproduces various programs broadcast by stationary transmitters
  • stationary transmitters that is, in other words, relates to a method in which the reception of broadcast services depends on the location in a database is stored.
  • Such mobile receiving systems for example installed in vehicles, are basically known. They have at least one antenna, often several antennas, for receiving high-frequency signals. The received high-frequency signals are converted in order to reproduce images or sounds accordingly.
  • the high-frequency signals are transmitted by stationary transmitters. This is usually done on different frequency bands or frequencies, so that such a stationary transmitter emits several programs on each assigned frequencies.
  • the programs are radio programs and / or television programs, also referred to as services or services.
  • a program broadcast by a stationary transmitter is thus broadcast on a certain frequency and can be received by the mobile receiving system when in range of the stationary transmitter.
  • the mobile receiving system always approaches due to its own movement of a respective stationary transmitter so that it eventually enters the broadcasting area of the programs, in this broadcasting area, a reception of the broadcast programs using the mobile receiving system is possible. As a result of its movement, the mobile receiving system leaves this transmission area of the stationary transmitter, it is necessary that programs received by the mobile receiving system are received from another stationary transmitter, which is then closer to the reception area of the mobile receiving system.
  • the invention is therefore based on the object to improve a method for operating a mobile receiving system to the effect that a fast switching from a receivable program of a broadcasting in the same receivable program of another broadcasting area of a stationary transmitter is shortened and dropouts in the reproduction of the received programs be avoided as far as possible or completely.
  • programs that can be received in a database and each of which is assigned a location and a local area around this location are each stored by a transmitter and, depending on the location of the mobile receiving system, one in each case in relation to the local area around this location
  • Sender a program is selected from the database and played back. Due to the geographical linking of broadcasting areas of transmitters and the respective location of the mobile receiving system, the nearest location of the transmitter can thus advantageously be determined very quickly on the basis of the positioning of the mobile receiving system and the programs that are broadcast by this transmitter are stored in a database and be selected directly.
  • Moving range of a transmitter moves or enters this, the mobile receiving system is already known that in this broadcast certain programs can be received. If the selected program is included in the list of receivable programs of this currently available station, the receiving system can switch over to this program of the currently receivable station. As a result, it is advantageously possible to switch over from the previously transmitted program of one transmitter to a broadcast program of another transmitter, when the mobile receiving system is in the transition from one broadcasting area into the other broadcasting area.
  • the programs receivable at the location of the mobile receiving system are then stored in the database. This occurs, on the one hand, when the mobile receiving system is put into operation for the first time and consequently the database is empty. Upon initial start-up, it may also be thought of storing in the database those programs which are broadcast at the location of a transmitter on which the mobile receiving system is first put into operation. This assumes that the location of the initial commissioning of the receiving system is known.
  • the receiving system will store the location of the first time Commissioning receivable programs stored in the database and assigned to these receivable and stored in the database programs a location and a local area around this location each of a sender.
  • This makes it possible after initial startup to receive and play back programs with the mobile receiving system.
  • the mobile receiving system again moves into a broadcasting area of a transmitter whose programs have already been received once and stored in the database with the location including the local area, a quick switchover from the program of one broadcasting area to the comparable program can be continued Broadcasting range of another stationary transmitter done. If a sufficiently large and, above all, a sufficiently fast memory is available, it is conceivable that this memory with its database over the life of the mobile receiving system repeatedly with new receivable programs to occupy. However, if databases are too large, there is a risk that either insufficient storage space is available or the read-out speed drops. Therefore, it may be considered to define criteria that once received and stored in the database program including the transmitter site and the local area around this location from the database.
  • Criteria for such an erase operation may be, for example, that when the mobile receiving system has moved away from that one location of a sender for a certain period of time, it will be erased. Also, a minimum distance between a stationary transmitter and the location of the mobile receiving system may result in the associated programs of this transmitter being deleted from the database. It might also be considered that, as long as the mobile receiving system is within a country, the database is filled with programs when changing broadcasting ranges and then, when switching to another country, the previous programs stored for the first country deleted and stored for the other country the receivable programs.
  • the radiation range of a stationary transmitter depends on many different factors, so that it can be clearly different from the radiation ranges of other stationary transmitters. Therefore, in a development of the invention, it is provided that the local area assigned to a respective program is increased or decreased in dependence on the reception of the program. That is, the first time the mobile receiving system initially stores a program and a stationary transmitter, it associates it with a predetermined first local area around the location of the transmitter. This can be, for example, a round or rectangular or other area that can be defined using geographical data of a GSP system.
  • the switching process can also be carried out very quickly, namely if it is determined that the mobile receiving system is the broadcasting area of the one station is just leaving or is just leaving and at the same time it is known that it is in the broadcast area of another stationary transmitter in which the comparable program can be broadcast and received.
  • the invention enables a fast retrieval of known services, detection of reception limits, timely preparation of the search for alternative services and storage of the transmitter landscape for the use of service tracking.
  • This method can be applied to mobile broadcast receivers (such as in vehicles).
  • the mechanism is automatic without manual intervention.
  • the procedure described in the following section can be used for terrestrial television services as well as for radio services.
  • the device consists of a module "GeoLoc" which is considered in more detail below and in FIG.
  • the GeoLoc module evaluates the current location, the service list (a database of currently or recently receivable services), and the receive parameters, and controls the service list and the background search block, the broadcast receivers.
  • the method based on this invention is implemented mainly in the GeoLoc module. But it is only through the interaction between the GeoLoc module, service list, background search and a position-giving method (for example GPS) that it becomes effective
  • the method is based on the fact that individual broadcast services are only to be received at specific, locally limited areas, usually depending on the location of the transmission towers.
  • the GeoLoc module learns this area automatically, depending on the location, creating a receive map of available services.
  • the reception map is in a simplified form the real reception of the services.
  • the form of the reception area is selected beforehand.
  • reception map is exemplified as rectangles.
  • the regei beautiful is the actual application of the GeoLoc module.
  • the GeoLoc module continuously and cyclically monitors the location and decides the following states:
  • proximity range reception range
  • core range core range
  • the GeoLoc module When approaching (within the approach range, but outside the receive range), the GeoLoc module requests from the background search a measurement with the already known receive parameters. The goal is to quickly retrieve services that were previously known (Figure 8).
  • the goal is to be prepared for the presumably imminent termination of reception and to take measures to improve reception, e.g. Adding another receiver ("Diversity”) or switching to an alternative frequency (Figure 10).
  • Part 4 Reaction to changing the station landscape ("unlearn")
  • GeoLoc module a mechanism that allows you to unlearn previously learned reception areas (from "Part 2"), thus preventing potentially outdated database entries from leading to incorrect results and an unnecessary search for services slim.
  • Part 2 previously learned reception areas
  • This method allows for a quick retrieval of known services, detection of reception limits, timely preparation of the search for alternative services and storage of the transmitter landscape for use of service tracking.
  • This method can be applied to mobile broadcast receivers (such as in vehicles).

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un procédé d'exploitation d'un système récepteur mobile qui reçoit et restitue différents programmes diffusés par des émetteurs fixes, caractérisé en ce que l'on stocke dans une base de données des programmes pouvant être reçus auxquels sont associés un emplacement d'un émetteur respectif et une zone locale autour de cet emplacement et, en fonction de l'emplacement du système récepteur mobile par rapport à la zone locale autour dudit emplacement d'émetteur, on sélectionne et on restitue un programme respectif à partir de la base de données.
PCT/EP2015/057504 2014-04-07 2015-04-07 Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile WO2015155179A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15718802.0A EP3130091A1 (fr) 2014-04-07 2015-04-07 Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014206690.5 2014-04-07
DE102014206690 2014-04-07

Publications (1)

Publication Number Publication Date
WO2015155179A1 true WO2015155179A1 (fr) 2015-10-15

Family

ID=53008452

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/057504 WO2015155179A1 (fr) 2014-04-07 2015-04-07 Procédé de recherche de services de radiodiffusion à partir de l'emplacement d'un système récepteur mobile

Country Status (3)

Country Link
EP (1) EP3130091A1 (fr)
DE (1) DE102015206159A1 (fr)
WO (1) WO2015155179A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921637A2 (fr) * 1997-12-04 1999-06-09 GRUNDIG Aktiengesellschaft Récepteur de radiodiffusion comportant l'actualisation des fréquences de réception stockées en mémoire
EP1657946A2 (fr) * 2004-11-11 2006-05-17 LG Electronics Inc. Appareil et procédé d'accord d'un canal de radiodiffusion
US20080248743A1 (en) * 2005-09-15 2008-10-09 At&T Mobility Ii Llc Location Based Services Quality Assessment
WO2009003748A1 (fr) * 2007-06-29 2009-01-08 Robert Bosch Gmbh Procédé de détermination approximative continue des plages d'émission
DE102009002960A1 (de) * 2009-05-08 2010-11-11 Robert Bosch Gmbh Verfahren und Steuergerät zur Selektion von einem Verkehrsdaten-Sender in einem Fahrzeug aus einer Mehrzahl von Verkehrsdaten-Sendern

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120068255A (ko) * 2010-12-17 2012-06-27 삼성전자주식회사 방송 수신기에서 채널 스캔 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921637A2 (fr) * 1997-12-04 1999-06-09 GRUNDIG Aktiengesellschaft Récepteur de radiodiffusion comportant l'actualisation des fréquences de réception stockées en mémoire
EP1657946A2 (fr) * 2004-11-11 2006-05-17 LG Electronics Inc. Appareil et procédé d'accord d'un canal de radiodiffusion
US20080248743A1 (en) * 2005-09-15 2008-10-09 At&T Mobility Ii Llc Location Based Services Quality Assessment
WO2009003748A1 (fr) * 2007-06-29 2009-01-08 Robert Bosch Gmbh Procédé de détermination approximative continue des plages d'émission
DE102009002960A1 (de) * 2009-05-08 2010-11-11 Robert Bosch Gmbh Verfahren und Steuergerät zur Selektion von einem Verkehrsdaten-Sender in einem Fahrzeug aus einer Mehrzahl von Verkehrsdaten-Sendern

Also Published As

Publication number Publication date
DE102015206159A1 (de) 2015-10-08
EP3130091A1 (fr) 2017-02-15

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