EP1839399A1 - Diversite de programme - Google Patents

Diversite de programme

Info

Publication number
EP1839399A1
EP1839399A1 EP05813614A EP05813614A EP1839399A1 EP 1839399 A1 EP1839399 A1 EP 1839399A1 EP 05813614 A EP05813614 A EP 05813614A EP 05813614 A EP05813614 A EP 05813614A EP 1839399 A1 EP1839399 A1 EP 1839399A1
Authority
EP
European Patent Office
Prior art keywords
antenna
data content
data
signals
received
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP05813614A
Other languages
German (de)
English (en)
Inventor
Thomas Adam
Christian Schwarz
Markus Lausterer
Frank D'argent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirschmann Car Communication GmbH
Original Assignee
Hirschmann Electronics 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 Electronics GmbH filed Critical Hirschmann Electronics GmbH
Publication of EP1839399A1 publication Critical patent/EP1839399A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

Definitions

  • the invention relates to a method and a device for receiving high-frequency signals via one or more antennas according to the features of the respective preambles of the independent claims.
  • Diversity methods and devices for the mobile reception of high-frequency signals, in particular for the signal reception in vehicles are known.
  • high-frequency analog signals which include television programs in particular, with a diversity receiver
  • Such a reception method enables the continuous reception and tracking of a television program while driving with the vehicle through different transmission areas, within a transmission area a transmitter is present, which broadcasts the television program at a certain frequency, wherein the frequency of the one transmission area of the radiated frequency one or more other transmission areas.
  • This method in which the receiver can receive one and the same transmitter once at a certain frequency and also at other frequencies of different transmission ranges, are known and are referred to as frequency diversity.
  • the reception characteristics deteriorate, with the result that the signal properties of the further transmission area improve as it moves from one to another transmission area, so that this criterion is used is no longer based on the previous frequency, but on the other, better to receive the same frequency.
  • the transition criterion from the one to the further frequency of a transmitter with the same program content are the signal properties during the transition from one transmission area to another transmission area.
  • high-frequency digital signals are also broadcast in Europe, in particular, which are received by appropriately trained receivers. These digital high-frequency signals are likewise emitted by transmitters located in a transmission area, so that it is also necessary here to receive the transmitter (with the same program content) while receiving these digital high-frequency signals during the transition from one transmission area to another transmission area, but by one Transmitter whose signals have been received so far, to switch to another station, which is now to receive the signals.
  • the criterion "signal property" is also used as a switchover criterion, and other criteria such as error rate (bit error rate) can be used.
  • the invention is therefore an object of the invention to provide a method and apparatus for receiving high-frequency signals in vehicles, in which the currently received program contents are maintained in a change from one coverage area to another coverage area and the change is fast and imperceptible.
  • the method provides, on the one hand, for the signals received by the at least one antenna to be examined for their data content and then switched over from one signal received by the antenna to another signal received by the antenna, if the data content of the one signal contains the data content of the signal other signal corresponds. This method is used when only one antenna is available to receive the signals (no diversity system).
  • the signals received by the at least two antennas are examined for their data content and then switched over from one signal received by one antenna to another signal received by the at least one further antenna, if the data content of the one Signal received with one antenna corresponds to the data content of the other signal received with the other antenna.
  • This method is used when more than one antenna (e.g., two, three, four or more than four) is available to receive the signals (diversity system).
  • the use of the data contents of the received signals has the advantage that these data contents represent a particular program broadcast by a stationary transmitter, irrespective of whether this program broadcast by the stationary transmitter is analog or digitally broadcast , If it is now established that the program which has been received so far via a first antenna is better received by at least one further antenna, in particular in the case of a transition from one transmission area to another transmission area, the signals received by the further antenna are sent to the receiver Preparation and playback supplied. It is important here that is switched to such an antenna with which a program is received with the same data content.
  • the examination for matching data contents of the individual signals which are received by the individual antennas has the advantage that these data contents are transmitted very quickly, eg. B.
  • first antenna comprises one of several antennas, and the vehicle may have at least two or more antennas which constantly receive the high-frequency signals which are then transmitted by the downstream receiver (in particular a diversity processor ) are examined or compared with respect to their program contents (data contents) and signal properties.
  • the characteristic of the signals are the signal contents or the quality based on detected bit error rates.
  • the data content of the received signals is determined based on data from the blanking interval (VBI).
  • VBI blanking interval
  • the data content is determined on the basis of the name of the broadcast and received transmitter. This works particularly well for digitally broadcast programs, where the high frequency digital signals also include the name of the broadcast transmitter (e.g., ARD). If such a transmitter has previously been received and the vehicle moves into a transmission area in which the same transmitter is broadcast, this is detected and switched over because of the match to the antenna with the better-received transmitter with the same program content.
  • the broadcast transmitter e.g., ARD
  • the data content is determined on the basis of EPG data (Electronic Program Guide Data) or SI Data (Service Information Data) or PSI Data (Program Specific Information), so that based on these data or data contents the agreement or deviation is ascertainable. Furthermore, it is conceivable according to the invention that several criteria can also be used to determine the data contents in order to be able to switch without doubt from one transmitter of one transmission area to another transmitter of another transmission area with the same program content.
  • a device which is characterized by its design and suitability for carrying out the method.
  • Such a device comprises, for example, a plurality of antennas which are arranged in a vehicle. These antennas are connected to a diversity processor, which in turn is connected to a receiver, wherein the receiver takes over the processing of the received high-frequency signals and displays them in a suitable manner (eg optically, and / or acoustically).
  • the diversity processor is adapted to switch from one to another antenna, if he receives a corresponding signal for this purpose.
  • this overall device is designed to switch the diversity processor from one antenna to another when it itself or, if appropriate, the receiver or other devices has examined the data contents of the received high-frequency signals to determine whether identical program contents are present. If, in the case of several but at least two antennas, the same program contents differ from one another with respect to their signal properties, the diversity processor switches the antenna which has the better signal properties to the antenna.
  • FIG. 1 different transmitters in different broadcasting areas
  • Figures 2 and 3 switching from one transmitter to another transmitter with the same program content
  • Figure 4 shows an apparatus for carrying out the method.
  • FIG. 1 shows, by way of example, a transmission landscape that can result when driving through a vehicle of an area.
  • the vehicle is in analog area 1, for example.
  • the invention ensures that the program (for example the television program ZDF, hereinafter referred to as ZDF) is received analogously in the analog area 1, the program ZDF being used in the transition to the digital area 2 is received further, so the program content remains, but the reception is no longer analog, but digital.
  • ZDF television program ZDF
  • a program here ZDF, for example
  • the invention enables switching as the vehicle moves from one area (analog or digital area) to another area (analog or digital area).
  • the criteria mentioned in particular in the patent claims are used, namely the data contents of the received signals.
  • the data content is also determined based on contents of a Teletext offer of a transmitter.
  • FIGS. 2 and 3 in which the transition from an analog domain to a digital domain is shown.
  • the teletext offer of Transmitter ZDF represented.
  • FIG. 2 shows the reception of the teletext offer by the transmitter ZDF in the analogue reception mode, specifically for the sake of better clarity.
  • the information presented here is transmitted with the high-frequency signals transmitted by the broadcasters, in the form of data combined into data content.
  • certain data contents shown in FIG. 2 are examined and compared with data contents which are shown in FIG. 3 and which are received by a further antenna. If it is ascertained that the selected data contents (for example the lettering "ZDF text Wed 12.01.05") match, as is the case in FIGS. 2 and 3, it is possible to switch from analog reception to digital reception Criteria for the switchover (ie the data contents) are those contents which are unchangeable in the individual transmitters in the period of the possible switchover.
  • the time indication (14:38:44) likewise shown in FIGS.
  • FIG. 4 shows an exemplary device for carrying out the method according to the invention.
  • the reference numeral 9 designates an antenna which is designed as a function of the frequency ranges to be received and accommodated at a corresponding location in a vehicle. If only the single antenna 9 is used, the method according to the features of claim 1 operates, in which case no diversity system is provided.
  • antennas 9 to 11 are followed by corresponding receivers (tuners) 12 to 14, wherein the output signals of the receiver (not just the data of the tuner 12) are supplied to an MPEG decoder. Its output signals are sent via an appropriate line to an evaluation unit 16, which has a trained for carrying out the method logic, a result memory and a control and correlation unit.
  • the output signal of the MPEG decoder 15 is also output to the AD converter in this embodiment. This is therefore necessary and useful, since the output signal of the MPEG decoder 15 in this case is an FBAS signal (but does not have to be), that is analog and thus must be converted from analog to digital. A path from the MPEG decoder 15 directly to the evaluation unit 16 is conceivable as an alternative or in addition.
  • the evaluation unit 16 finally also includes at least one output 19 (analog and / or digital) to the received from the antennas 9 to 11 and subsequently processed signals (audio and / or video signals) to be able to play.
  • analog-to-digital converters that provide the output from the receivers 12 to 14 analog signals in the digital signals for further processing of the evaluation unit 16.
  • the analog-to-digital converters can be provided separately between the receivers 12 to 14 and the evaluation unit 16, but can alternatively also be integrated in the receivers 12 to 14 and / or the evaluation unit 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Multimedia (AREA)
  • Radio Transmission System (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un procédé permettant de recevoir des signaux haute fréquence, selon lequel plusieurs antennes d'un récepteur reçoivent les signaux et les signaux d'une antenne, qui représentent un contenu de programme présélectionnable sont acheminés jusqu'à un récepteur. En outre, au moins une autre antenne, qui reçoit des signaux comportant le même contenu de programme, mais avec de meilleures propriétés de signalisation, peut être sélectionnée. Selon l'invention, il est prévu que le contenu des données des signaux reçus par l'antenne (au moins au nombre de une) soit examiné, puis qu'une commutation s'effectue entre un signal reçu par l'antenne et un autre signal reçu par l'antenne, si le contenu des données d'un signal correspond au contenu des données de l'autre signal ou si le contenu des données des signaux reçus par les au moins deux antennes est examiné, puis qu'une commutation intervienne entre un signal reçu par une antenne et un autre signal reçu par l'autre antenne (au moins au nombre de une), si le contenu des données du signal qui est reçu par une antenne correspond au contenu de données de l'autre signal, reçu par l'autre antenne.
EP05813614A 2005-01-18 2005-12-09 Diversite de programme Ceased EP1839399A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005002425 2005-01-18
DE102005039507A DE102005039507A1 (de) 2005-01-18 2005-08-20 Programmdiversity
PCT/EP2005/013189 WO2006076948A1 (fr) 2005-01-18 2005-12-09 Diversite de programme

Publications (1)

Publication Number Publication Date
EP1839399A1 true EP1839399A1 (fr) 2007-10-03

Family

ID=35788006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05813614A Ceased EP1839399A1 (fr) 2005-01-18 2005-12-09 Diversite de programme

Country Status (7)

Country Link
US (1) US20080200137A1 (fr)
EP (1) EP1839399A1 (fr)
JP (1) JP2008527938A (fr)
DE (1) DE102005039507A1 (fr)
NO (1) NO20074194L (fr)
RU (1) RU2426233C2 (fr)
WO (1) WO2006076948A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7846184B2 (en) * 2004-08-13 2010-12-07 Sasso Ricardo C Replacement facet joint and method
DE102013201752A1 (de) 2012-02-07 2013-08-08 Hirschmann Car Communication Gmbh Senderverfolgung unterschiedlicher Standards
WO2013117514A1 (fr) 2012-02-07 2013-08-15 Hirschmann Car Communication Gmbh Procédé de commutation rapide entre deux voies de transmission alternatives
US9520935B2 (en) * 2013-03-15 2016-12-13 Shure Acquisition Holdings, Inc. Wireless audio receiver system and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840533A1 (de) * 1978-09-18 1980-03-27 Hans Ing Grad Wellhausen Rundfunk- oder fernsehempfaenger
JP3393356B2 (ja) * 1995-05-26 2003-04-07 ソニー株式会社 受信装置および受信方法
JPH1065590A (ja) * 1996-08-23 1998-03-06 Fujitsu Ten Ltd テレビ／ラジオ受信装置
DE29615897U1 (de) * 1996-09-13 1996-11-28 FUBA Automotive GmbH, 31162 Bad Salzdetfurth Frequenzdiversity-Anordnung
JPH11196342A (ja) * 1997-12-26 1999-07-21 Matsushita Electric Ind Co Ltd 送出装置および端末
DE19803058C1 (de) * 1998-01-28 1999-09-16 Ut Loewe Automotive Electronic Fernsehempfänger für den Betrieb in einem Fahrzeug
JP3439653B2 (ja) * 1998-04-08 2003-08-25 シャープ株式会社 アナログ／デジタル放送対応受信機
JP2000332632A (ja) * 1999-05-20 2000-11-30 Toyota Motor Corp 移動体用放送受信装置
DE10006701C2 (de) * 2000-02-16 2002-04-11 Harman Becker Automotive Sys Empfangseinrichtung
CN1714566A (zh) * 2002-11-22 2005-12-28 皇家飞利浦电子股份有限公司 用于接收包含可以用于编程所述接收的文本信息的信号的设备
JP2004194108A (ja) * 2002-12-12 2004-07-08 Sony Corp 情報処理装置および情報処理方法、記録媒体、並びにプログラム
JP2004266396A (ja) * 2003-02-28 2004-09-24 Toshiba Corp お好みチャンネル選局装置及びお好みチャンネル選局方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006076948A1 *

Also Published As

Publication number Publication date
US20080200137A1 (en) 2008-08-21
NO20074194L (no) 2007-10-18
RU2426233C2 (ru) 2011-08-10
JP2008527938A (ja) 2008-07-24
DE102005039507A1 (de) 2006-08-17
WO2006076948A1 (fr) 2006-07-27
RU2007131364A (ru) 2009-02-27

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