DE102006052591B4 - Listening to the radio unit - Google Patents
Listening to the radio unit Download PDFInfo
- Publication number
- DE102006052591B4 DE102006052591B4 DE102006052591.4A DE102006052591A DE102006052591B4 DE 102006052591 B4 DE102006052591 B4 DE 102006052591B4 DE 102006052591 A DE102006052591 A DE 102006052591A DE 102006052591 B4 DE102006052591 B4 DE 102006052591B4
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- Germany
- Prior art keywords
- broadcast
- signals
- position data
- geographical position
- receiving unit
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
-
- 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
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- 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
- H04N21/4508—Management of client data or end-user data
- H04N21/4524—Management of client data or end-user data involving the geographical location of the client
-
- 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
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
- H04N21/4542—Blocking scenes or portions of the received content, e.g. censoring scenes
-
- 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
- H04N5/50—Tuning indicators; Automatic tuning control
-
- 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
Abstract
Rundfunkempfangseinheit (3) zum Versorgen von Rundfunkteilnehmeranschlüssen (14 ... 14’’’) über eine Hausverteilung (15), welche folgendes aufweist: – eine Rundfunkempfangsantenne (4) mit einem LNB zum Empfang von Rundfunksignalen (1) und zum Heruntermischen der Rundfunksignale (1) auf Zwischenfrequenzsignale (10) für mindestens einen über einen Rundfunkteilnehmeranschluss (14, ... 14’’’) angeschlossenen Tuner einer Rundfunkempfangseinrichtung – einen sogenannten Signalempfänger (6), an dem eine zusätzliche Empfangsantenne (5) angeschlossen ist und der in der Lage ist, Signale (2, 2’, 2’’) zur geografischen Positionsbestimmung von der zusätzlichen Empfangsantenne (5) zu empfangen und daraus geographische Positionsdaten (7) zu erstellen und so modifiziert ist, dass der Signalempfänger (6) die geographische Positionsdaten (7) zu einem kanalkodierten Transportstrom kodiert – einen sogenannten Modulator (8), der den kanalkodierten Transportstrom mit den geographischen Positionsdaten (7) in mindestens einen geeigneten Frequenzbereich (17, 17’) moduliert, welcher sich nicht mit dem/den zur Übertragung der Rundfunksignale über eine Hausverteilung vorgesehenen Frequenzbereich/Frequenzbereichen (18) überschneidet – eine Mischstufe (11), zum Mischen der herunter gemischten Rundfunksignale (10) mit den modulierten zum Transportstrom kanalkodierten in mindestens einen vorgegebenen Frequenzbereich umgesetzten geographischen Positionsdaten.A broadcast receiving unit (3) for supplying broadcast user terminals (14 ... 14 '' ') via a home distribution (15), comprising: - a broadcast receiving antenna (4) having an LNB for receiving broadcast signals (1) and downmixing the broadcast signals (1) on intermediate frequency signals (10) for at least one connected via a radio subscriber terminal (14, ... 14 '' ') tuner a radio receiving device - a so-called signal receiver (6) to which an additional receiving antenna (5) is connected and in is able to receive signals (2, 2 ', 2' ') for the geographical position determination from the additional receiving antenna (5) and to create therefrom geographical position data (7) and is modified so that the signal receiver (6) the geographical position data (7) coded to a channel-coded transport stream - a so-called modulator (8), which geog the channel-coded transport stream modulated raphischen position data (7) in at least one suitable frequency range (17, 17 '), which does not overlap with the / for the transmission of the broadcast signals over a house distribution frequency range / frequency ranges (18) - a mixing stage (11), for mixing the down mixed broadcast signals (10) with the modulated to the transport stream channel coded translated into at least one predetermined frequency range geographical position data.
Description
Die Erfindung betrifft eine Rundfunkempfangseinheit. The invention relates to a radio receiving unit.
Es ist bekannt, dass Rundfunksignale häufig für lokal begrenzte geografische Gebiete lizenziert sind. It is well known that broadcast signals are often licensed for geographically limited geographical areas.
Weiterhin sind Verschlüsselungssysteme bekannt, welche die Entschlüsselung der Rundfunksignale von entsprechenden Zugangsberechtigungsnachweisen der jeweiligen Benutzer abhängig machen. Furthermore, encryption systems are known which make the decryption of the broadcast signals dependent on corresponding access credentials of the respective users.
Es sind darüber hinaus Verfahren zur geografischen Positionsbestimmung bekannt, die über den Empfang der Signale mehrerer verschiedener erdnaher Satelliten durchgeführt werden, wobei diese Signale jeweils Informationen über den Zeitpunkt ihrer Ausstrahlung beinhalten. In addition, geographic positioning methods are known which are performed by receiving the signals from a plurality of different near-earth satellites, each of which includes information about the time of their broadcast.
So ist beispielsweise aus
In der
Der Nachteil im Stand der Technik besteht darin, dass die Signale, welche der geografischen Positionsbestimmung dienen, und die zu entschlüsselnden Rundfunksignale, welche in einer zur Übertragung über eine Hausverteilung geeigneten Form vorliegen, über die zur Übertragung der Rundfunksignale vorgesehene Hausverteilung nicht gleichzeitig störungsfrei übertragbar sind. The disadvantage of the prior art is that the signals which are used for geographical position determination and the broadcast signals to be decrypted, which are in a form suitable for transmission via a house distribution, can not be transmitted simultaneously without interference via the house distribution provided for the transmission of the broadcast signals ,
Die Aufgabe der Erfindung besteht darin, eine Rundfunkempfangseinheit zu entwickeln, welche die Signale zur geografischen Positionsbestimmung in der Weise aufbereitet und mit Rundfunksignalen mischt, dass die Signale zur geografischen Positionsbestimmung und die Rundfunksignale gemeinsam über eine zur Übertragung der Rundfunksignale vorgesehene Hausverteilung in einer zum Empfang und zur Verarbeitung ausreichenden Qualität übertragbar und wieder trennbar sind. The object of the invention is to develop a radio receiving unit, which processes the signals for geographical positioning in such a way and mixes with broadcast signals that the signals for geographical positioning and the broadcast signals in common can be transmitted and separated again by means of a house distribution provided for the transmission of the broadcast signals in a quality sufficient for reception and processing.
Diese Aufgabe wird durch eine Rundfunkempfangseinheit gemäß Anspruch 1 gelöst. This object is achieved by a broadcast receiving unit according to
Die erfindungsgemäße Rundfunkempfangseinheit umfasst eine Rundfunkempfangsantenne und weist außerdem eine sogenannte „zusätzliche Empfangsantenne“ auf, welche dazu geeignet ist, Signale zur geographischen Positionsbestimmung zu empfangen. Weiterhin umfasst die erfindungsgemäße Rundfunkempfangseinheit einen sogenannten „Signalempfänger“, an den die zusätzliche Empfangsantenne angeschlossen ist, und der in der Lage ist, die Signale zur geografischen Positionsbestimmung von der zusätzlichen Empfangsantenne zu empfangen und zu sogenannten „geografischen Positionsdaten“ zu verarbeiten. Weiterhin weist die erfindungsgemäße Rundfunkempfangseinheit Mittel auf, um die vom Signalempfänger ermittelten geografischen Positionsdaten gemäß einem geeigneten Protokoll zu formatieren und mit einem ebenfalls zur Rundfunkempfangseinheit gehörenden Modulator in geeigneter Form in mindestens einen geeigneten Frequenzbereich umzusetzen. Dieser mindestens eine geeignete Frequenzbereich zeichnet sich einerseits dadurch aus, dass er sich mit dem/den zur Übertragung der Rundfunksignale über die Hausverteilung vorgesehenen Frequenzbereich/Frequenzbereichen nicht überschneidet und zeichnet sich andererseits dadurch aus, dass in ihm enthaltene Signale über die zur Übertragung der Rundfunksignale vorgesehene Hausverteilung einschließlich gegebenenfalls darin enthaltener Multischalter oder Splitter in einer Qualität übertragbar sind, die den störungsfreien Empfang dieser Signale an den Rundfunkteilnehmeranschlüssen der Hausverteilung sowie die darauffolgende störungsfreie Verarbeitung dieser Signale ermöglicht. Darüber hinaus weist die erfindungsgemäße Rundfunkempfangseinheit eine Mischstufe auf, welche dazu geeignet ist, die Rundfunksignale und die modulierten geografischen Positionsdaten zusammenzumischen und an ihrem Ausgang zur Übertragung zur Verfügung zu stellen. The radio receiver unit according to the invention comprises a radio receiver antenna and also has a so-called "additional receiver antenna", which is suitable for receiving signals for geographical position determination. Furthermore, the radio receiving unit according to the invention comprises a so-called "signal receiver", to which the additional receiving antenna is connected, and which is able to receive the signals for the geographical position determination of the additional receiving antenna and to process so-called "geographical position data". Furthermore, the radio receiver unit according to the invention comprises means for formatting the geographic position data determined by the signal receiver in accordance with a suitable protocol and implementing it in a suitable form in at least one suitable frequency range with a modulator belonging also to the radio receiver unit. This at least one suitable frequency range is distinguished, on the one hand, by the fact that it does not overlap with the frequency range / frequency ranges provided for transmitting the broadcast signals via the house distribution and, on the other hand, is distinguished by the fact that signals contained in it are provided via the signals provided for transmission of the broadcast signals Housing distribution including possibly contained therein multiswitch or splitter can be transmitted in a quality that allows the interference-free reception of these signals to the broadcast subscriber terminals of the house distribution and the subsequent interference-free processing of these signals. In addition, the radio receiver unit according to the invention has a mixing stage which is suitable for mixing together the broadcast signals and the modulated geographical position data and making them available for transmission at their output.
Ein Verfahren sieht vor, mit den Rundfunksignalen Informationen zu übertragen, welche einen geeigneten Zeitraum zur Abstimmung des Tuners einer Rundfunkempfangseinrichtung auf mindestens ein Frequenzband, in welchem die geografischen Positionsdaten übertragen werden, signalisieren. Dieser geeignete Zeitraum kann so gewählt sein, dass die Rundfunkübertragung durch die Abstimmung des Tuners auf dieses mindestens eine Frequenzband, in welchem die geografischen Positionsdaten übertragen werden, nicht oder nur unwesentlich gestört wird. One method provides to transmit with the broadcast signals information indicating a suitable period for tuning the tuner of a radio receiving device to at least one frequency band in which the geographical position data is transmitted. This suitable period of time may be selected such that the broadcast transmission is not or only slightly disturbed by the tuning of the tuner to this at least one frequency band in which the geographical position data are transmitted.
Diese Erfindung besitzt Vorteile gegenüber dem Stand der Technik, die im Folgenden erläutert werden. This invention has advantages over the prior art, which are explained below.
Durch die geeignete Modulation der geografischen Positionsdaten ist die störungsfreie Übertragbarkeit sowohl der Rundfunksignale als auch der geografischen Positionsdaten über eine zur Übertragung der Rundfunksignale vorgesehene Hausverteilung möglich. Due to the appropriate modulation of the geographical position data, the interference-free transferability of both the broadcast signals and the geographical position data is possible via a distribution of the broadcast signals provided for house distribution.
Da der Signalempfänger erfindungsgemäß in der Rundfunkempfangseinheit angeordnet ist, wird nur ein einziger Signalempfänger für sämtliche Rundfunkteilnehmeranschlüsse der von dieser Rundfunkempfangseinheit versorgten Hausverteilung benötigt. Since the signal receiver is arranged according to the invention in the broadcast receiving unit, only a single signal receiver is required for all broadcast subscriber connections of the house distribution supplied by this broadcast receiving unit.
Da keine zusätzlichen Bauteile in den Rundfunkempfangseinrichtungen notwendig sind, können auch nicht dafür vorgesehene Rundfunkempfangseinrichtungen allein durch entsprechende gerätespezifische Softwareupdates, welche von ihren jeweiligen Herstellern gegebenenfalls zur Verfügung gestellt werden, zum Empfang und zur erfindungsgemäßen Verarbeitung der geografischen Positionsdaten befähigt werden. Since no additional components are necessary in the radio reception equipment, also unidentified radio reception facilities can be enabled for the reception and for the processing according to the invention of the geographical position data solely by means of corresponding device-specific software updates, which are optionally made available by their respective manufacturers.
Eine vorteilhafte Ausführung der Erfindung besteht darin, dass die Rundfunkempfangseinheit Mittel aufweist, um die geografischen Positionsdaten so zu formatieren und zu modulieren, dass sie von den Rundfunkempfangseinrichtungen, welche für den Empfang der Rundfunksignale an den Rundfunkteilnehmeranschlüssen der Hausverteilung vorgesehen sind, empfangen und verarbeitet werden können. Bevorzugt beinhaltet die Formatierung das Erzeugen eines Transportstroms und eine Kanalkodierung. An advantageous embodiment of the invention is that the broadcast receiving unit comprises means for formatting and modulating the geographical position data such that they can be received and processed by the broadcast receiving facilities provided for receiving the broadcast signals at the broadcast subscriber terminals of the home distribution , The formatting preferably includes the generation of a transport stream and a channel coding.
Eine vorteilhafte Ausführung der Erfindung besteht darin, dass die geografischen Positionsdaten von der Rundfunkempfangseinheit verschlüsselt übertragen werden. An advantageous embodiment of the invention is that the geographical position data is transmitted in encrypted form by the broadcast receiving unit.
Eine vorteilhafte Ausführung der Erfindung besteht darin, dass es sich bei der Rundfunkempfangsantenne um eine Satellitenempfangsantenne handelt. An advantageous embodiment of the invention is that the broadcast receiving antenna is a satellite receiving antenna.
Eine weitere vorteilhafte Ausführung der Erfindung besteht darin, dass die besagte zusätzliche Empfangsantenne in einen LNB integriert ist. A further advantageous embodiment of the invention consists in that said additional receiving antenna is integrated in an LNB.
Eine weitere vorteilhafte Ausführung der Erfindung besteht darin, dass der Signalempfänger in die zusätzliche Empfangsantenne integriert ist. A further advantageous embodiment of the invention consists in that the signal receiver is integrated in the additional receiving antenna.
Eine weitere vorteilhafte Ausführung der Erfindung besteht darin, dass der Signalempfänger in den LNB integriert ist. A further advantageous embodiment of the invention is that the signal receiver is integrated in the LNB.
Eine weitere vorteilhafte Ausführung der Erfindung besteht darin, dass die Rundfunkempfangseinheit mit Mitteln zur Pegelanpassung der Rundfunksignale und/oder der modulierten geografischen Positionsdaten ausgestattet ist, wobei diese Mittel zur Pegelanpassung sich bevorzugt in der Mischstufe befinden. A further advantageous embodiment of the invention is that the radio receiving unit is equipped with means for adjusting the level of the broadcast signals and / or the modulated geographical position data, these means for adjusting the level are preferably located in the mixing stage.
Weitere vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Further advantageous embodiments of the invention are characterized in the subclaims.
Im Folgenden soll ein bevorzugtes Ausführungsbeispiel die Erfindung anhand einer Zeichnung erläutern. In the following, a preferred embodiment of the invention will be explained with reference to a drawing.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Rundfunksignale Broadcast signals
- 2, 2´, 2´´ 2, 2', 2''
- Signale zur geografischen Positionsbestimmung Signals for geographical positioning
- 3 3
- Rundfunkempfangseinheit Listening to the radio unit
- 4 4
- Satellitenempfangsantenne mit LNB Satellite receiver antenna with LNB
- 5 5
- Zusätzliche Empfangsantenne Additional receiving antenna
- 6 6
- modifizierter Signalempfänger modified signal receiver
- 7 7
- geografische Positionsdaten geographical position data
- 8 8th
- QPSK-Modulator QPSK modulator
- 9 9
- modulierte geografische Positionsdatensignale modulated geographic position data signals
- 10 10
- Zwischenfrequenzsignale Intermediate frequency signals
- 11 11
- Mischstufe mixer
- 12 12
- Mischsignal am Signalausgang der Rundfunkempfangseinheit Mixed signal at the signal output of the radio receiver unit
- 13 13
- Multischalter Multischalter
- 14, 14´, 14´´, 14´´´ 14, 14', 14'', 14'''
- Rundfunkteilnehmeranschlüsse Radio subscribers
- 15 15
- Hausverteilung house distribution
- 16, 16´ 16, 16'
- zur Übertragung der geografischen Positionsdaten geeignete Frequenzbereichefrequency ranges suitable for transmitting geographic position data
- 17, 17´ 17, 17'
- Frequenzbänder der modulierten geografischen PositionsdatensignaleFrequency bands of the modulated geographical position data signals
- 18 18
- Zwischenfrequenzbereich der Rundfunksignale Intermediate frequency range of the broadcast signals
- 19 19
- Frequenzbänder der Rundfunkkanäle im Zwischenfrequenzbereich Frequency bands of the broadcast channels in the intermediate frequency range
Die Satellitenempfangsantenne (
Die Trennbarkeit der in dieser Form übertragenen Signale ist in diesem Beispiel dadurch gewährleistet, dass der Tuner einer an einen Rundfunkteilnehmeranschluss angeschlossenen Rundfunkempfangseinrichtung für einen geeigneten Zeitraum kurz auf ein Frequenzband (
Claims (8)
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DE102006052591.4A DE102006052591B4 (en) | 2006-11-08 | 2006-11-08 | Listening to the radio unit |
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DE102006052591.4A DE102006052591B4 (en) | 2006-11-08 | 2006-11-08 | Listening to the radio unit |
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DE102006052591A1 DE102006052591A1 (en) | 2008-06-26 |
DE102006052591B4 true DE102006052591B4 (en) | 2017-11-02 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69630146T2 (en) * | 1995-05-05 | 2004-06-09 | Philip A. Rubin & Associates, Inc. | TELEVISION SET TOP BOX WITH GPS RECEIVER |
WO2004080074A1 (en) * | 2003-03-04 | 2004-09-16 | Koninklijke Philips Electronics N.V. | Transmitter and receiver for determining locale |
US20050206567A1 (en) * | 2004-02-26 | 2005-09-22 | Funai Electric Co., Ltd. | System for transmitting a signal for positioning and method for producing the system |
-
2006
- 2006-11-08 DE DE102006052591.4A patent/DE102006052591B4/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69630146T2 (en) * | 1995-05-05 | 2004-06-09 | Philip A. Rubin & Associates, Inc. | TELEVISION SET TOP BOX WITH GPS RECEIVER |
WO2004080074A1 (en) * | 2003-03-04 | 2004-09-16 | Koninklijke Philips Electronics N.V. | Transmitter and receiver for determining locale |
US20050206567A1 (en) * | 2004-02-26 | 2005-09-22 | Funai Electric Co., Ltd. | System for transmitting a signal for positioning and method for producing the system |
Also Published As
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DE102006052591A1 (en) | 2008-06-26 |
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