EP0981906A1 - Video-telephony with a digital tv-signal receiver - Google Patents

Video-telephony with a digital tv-signal receiver

Info

Publication number
EP0981906A1
EP0981906A1 EP98928135A EP98928135A EP0981906A1 EP 0981906 A1 EP0981906 A1 EP 0981906A1 EP 98928135 A EP98928135 A EP 98928135A EP 98928135 A EP98928135 A EP 98928135A EP 0981906 A1 EP0981906 A1 EP 0981906A1
Authority
EP
European Patent Office
Prior art keywords
digital
receiver
signals
video
interface
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
EP98928135A
Other languages
German (de)
French (fr)
Inventor
Gerhard Bock
Niels-Vejrup Carlsen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0981906A1 publication Critical patent/EP0981906A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4223—Cameras
    • 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
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals

Definitions

  • the invention relates to a receiver for digital TV signals according to the preamble of claim 1 and a remote control for this receiver.
  • Such a receiver which is usually referred to as a set-top box, is preferably used in a multimedia landscape for receiving digital TV signals.
  • the set-top box has a return channel which is connected to an analog or digital telephone network via a telephone connection line.
  • the price for an integrated color screen is high for a dedicated videophone that has been purchased for video telephony.
  • the object of the invention is to simplify video telephony, in particular with regard to the wiring effort.
  • the single figure shows a receiver STB for digital TV signals, a so-called set-top box.
  • the receiver STB has a cable connection KA and a connection for a satellite antenna SA.
  • the cable connection KA is connected to a cable tuner KT, and the connection for a satellite antenna SA to a satellite tuner ST.
  • the digital TV signals received in the tuners KT and ST are fed to a demodulator DM, the output signals of which are applied to an MPEG decoder DC.
  • digital audio and video data A, V are obtained, which are passed to an interface SS via a digital-analog converter DA.
  • This interface SS can be implemented, for example, by a Scart connection.
  • the now analog TV signals are fed from the interface SS directly or indirectly via a video recorder VTR to a television set TV.
  • the MPEG decoder DC is connected to a microprocessor P.
  • the microprocessor P which can also be implemented by a digital signal processor, data for an operator interface are obtained from the decoded digital TV signals. These data, like the video data V, are transmitted via the digital analog converter DA and
  • Interface SS ultimately shown on the screen of the TV TV as a user interface.
  • the user can react, for example, menu-driven, with the help of the user interface shown on the screen, and give feedback, for example, via a wireless remote control FB, to the receiver STB.
  • the receiver STB has, for example, a remote control receiver FE, which is also connected to the microprocessor P.
  • the remote control signals received via the remote control receiver FE are converted in the microprocessor P into unspecified data for a return channel.
  • This data is given to a telephone connection TA, for example via a modem MD to an analog telephone network a / b, or via an ISDN interface ID to a digital telephone network ISDN.
  • the receiver STB for digital TV signals has additional devices for carrying out the video telephony.
  • an analog-digital converter AD is provided in the receiver STB, for example, which is connected to the processor P.
  • An external video camera VK can be connected to the analog-digital converter AD.
  • an external microphone MK can also be connected to the analog-digital converter AD.
  • the video signals VD from the video camera VK and the audio signals AD of the microphone MK are given to the telephone connection TA via the analog-digital converter AD, the processor P and either via the modem MD or via the ISDN interface ID.
  • the video camera VK and the microphone MK are connected to the analog telephone network a / b via the modem MD, and to the digital telephone network ISDN via the ISDN interface ID.
  • the modem MD and / or the ISDN interface ID are designed bidirectionally in the receiver STB according to the invention.
  • the audio and video data AD, VD present at the telephone connection TA from the external telephone network reach the processor P via the modem or via the ISDN interface ID.
  • the processor P outputs this audio and video data AD, VD via the digital Analog converter DA to the interface SS.
  • the received analog and video data AD, VD are ultimately on the TV screen shown on TV and played through its built-in speakers.
  • the audio data AD can also be reproduced via an external loudspeaker LP.
  • the video camera VK and the microphone MK can be connected to the receiver STB can also be done wirelessly.
  • the external loudspeaker LP can also be connected wirelessly in order to reproduce the received audio data AD or signals.
  • the microphone MK is integrated in the remote control FB.
  • the remote control FB is used in a manner known per se to control the receiver STB.
  • the audio data AD recorded by the microphone are passed on to the processor P via the remote control receiver FE already present in the receiver STB. This gives this audio data AD in a known manner via the modem MD or the ISDN interface ID to the telephone connection TA.
  • the remote control FB can also have a loudspeaker LP.
  • the audio data AD received via the telephone connection TA reach the remote control FB, and thus the loudspeaker LP, via the modem MD or the ISDN interface ID, the processor P and an additional transmission device SE to be provided in the receiver STB.
  • the video camera VK can be integrated in the receiver STB.
  • the microphone MK can, as already stated, be integrated in the remote control FB, or it can also be integrated in the receiver STB itself.
  • the microphone MK is then used, preferably using the hands-free device.
  • connection of the receiver STB for digital TV signals to an external telephone network can be implemented via an antenna cable, for example via the connection SA for a satellite antenna.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention pertains to a receiver (STB) for digital TV-signals, comprising a microprocessor (P) operating both as a receiver control unit and a data processing unit, an adaptive interface (MD, ID) for connecting the microprocessor (P) to a telephone outlet (TA), and an interface (SS) for audio and video signal (A, V) transmission. The invention is provided with means for fitting a video camera (VK) thereon and a microphone (MK) to the microprocessor (P), as well as with a BW-interface (MD, ID).

Description

Videotelefonie mit einem Empfänger für digitale TV-SignaleVideo telephony with a receiver for digital TV signals
Die Erfindung betrifft einen Empfänger für digitale TV-Signale gemäß dem Oberbegriff des Patentanspruches 1 und eine Fernbedienung für diesen Empfänger.The invention relates to a receiver for digital TV signals according to the preamble of claim 1 and a remote control for this receiver.
Ein solcher Empfänger, der meist als Set-Top-Box bezeichnet wird, wird vorzugsweise in einer Multimedia-Landschaft zum Empfang von digitalen TV-Signalen verwendet. Die Set-Top-Box weist zur interaktiven Benutzung einen Rückkanal auf, der über eine Telefonanschlußleitung mit einem analogen oder digitalen Telefonnetz verbunden ist.Such a receiver, which is usually referred to as a set-top box, is preferably used in a multimedia landscape for receiving digital TV signals. For interactive use, the set-top box has a return channel which is connected to an analog or digital telephone network via a telephone connection line.
Die Videotelefonie kann heutzutage mit unterschiedlichen Ge- rätekonfigurationen durchgeführt werden.Nowadays, video telephony can be carried out with different device configurations.
Bei einem eigens für die Videotelefonie gekauften, dedizier- ten Bildtelefon ist der Preis für einen integrierten Farbbildschirm hoch.The price for an integrated color screen is high for a dedicated videophone that has been purchased for video telephony.
Bei Verwendung eines vorhandenen Personal Computers sind meist der Aufstellungsort, die Größe und die schlechte Be- dienbarkeit für verschiedene Familienmitglieder problematisch.When using an existing personal computer, the location, size and poor operability are usually problematic for different family members.
Es kann auch ein vorhandener Fernseher mit Bildtelefonzusatz verwendet werden. Nachteilig ist hierbei die aufwendige und komplizierte Verkabelung zwischen den einzelnen Komponenten, wie Fernseher, Bildtelefonzusatz und weiter beispielsweise Videorecorder, Telefon, Settopbox oder Satellitenempfänger.You can also use an existing television with a videophone attachment. The disadvantage here is the complex and complicated cabling between the individual components, such as television, videophone add-on and further, for example, video recorder, telephone, set-top box or satellite receiver.
Der Erfindung liegt die Aufgabe zugrunde, die Videotelefonie insbesondere hinsichtlich des Verkabelungsaufwandes, zu vereinfachen.The object of the invention is to simplify video telephony, in particular with regard to the wiring effort.
Diese Aufgabe wird erfindungsgemäß gemäß den Merkmalen des Patentanspruchs 1 gelöst . Eine besonders geeignete Fernbedienung für den erfindungsgemäß ausgebildeten Empfänger ist in den Unteransprüchen angegeben .This object is achieved according to the features of claim 1. A particularly suitable remote control for the receiver designed according to the invention is specified in the subclaims.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles beschrieben.The invention is described below using an exemplary embodiment shown in the drawing.
In der einzigen Figur ist ein Empfänger STB für digitale TV- Signale dargestellt, eine sogenannte Set-Top-Box. Der Empfänger STB weist einen Kabelanschluß KA und einen Anschluß für eine Satellitenantenne SA auf. Der Kabelanschluß KA ist an einem Kabeltuner KT angeschaltet, und der Anschluß für eine Satellitenantenne SA an einem Satellitentuner ST. Die in den Tunern KT und ST empfangenen digitalen TV-Signale werden einem Demodulator DM zugeführt, dessen Ausgangssignale an einem MPEG-Decoder DC anliegen. Im Decoder DC werden digitale Audio- und Videodaten A, V gewonnen, die über einen Digital - Analogwandler DA an eine Schnittstelle SS gegeben werden. Diese Schnittstelle SS kann beispielsweise durch einen Scart- anschluß realisiert sein. Die jetzt analogen TV-Signale werden von der Schnittstelle SS direkt, oder indirekt über einen Videorecorder VTR, einem Fernseher TV zugeführt.The single figure shows a receiver STB for digital TV signals, a so-called set-top box. The receiver STB has a cable connection KA and a connection for a satellite antenna SA. The cable connection KA is connected to a cable tuner KT, and the connection for a satellite antenna SA to a satellite tuner ST. The digital TV signals received in the tuners KT and ST are fed to a demodulator DM, the output signals of which are applied to an MPEG decoder DC. In the decoder DC, digital audio and video data A, V are obtained, which are passed to an interface SS via a digital-analog converter DA. This interface SS can be implemented, for example, by a Scart connection. The now analog TV signals are fed from the interface SS directly or indirectly via a video recorder VTR to a television set TV.
Der MPEG-Decoder DC ist mit einem Mikroprozessor P verbunden. Im Mikroprozessor P, der auch durch einen digitalen Signal - Prozessor realisiert sein kann, werden aus den dekodierten, digitalen TV-Signalen nicht näher bezeichnete Daten für eine Bedienoberfläche gewonnen. Diese Daten werden, ebenso wie die Videodaten V, über den Digital -Analogwandler DA und dieThe MPEG decoder DC is connected to a microprocessor P. In the microprocessor P, which can also be implemented by a digital signal processor, data for an operator interface are obtained from the decoded digital TV signals. These data, like the video data V, are transmitted via the digital analog converter DA and
Schnittstelle SS letztlich auf dem Bildschirm des Fernsehers TV als Bedienoberfläche dargestellt.Interface SS ultimately shown on the screen of the TV TV as a user interface.
Der Benutzer kann, beispielsweise menügeführt, mit Hilfe der auf dem Bildschirm dargestellten Bedienoberfläche reagieren, und Rückmeldungen, beispielsweise über eine drahtlose Fernbedienung FB, an dem Empfänger STB geben. Der Empfänger STB weist hierzu beispielsweise einen Fernbedienungsempfänger FE auf, der ebenfalls mit dem Mikroprozessor P verbunden ist.The user can react, for example, menu-driven, with the help of the user interface shown on the screen, and give feedback, for example, via a wireless remote control FB, to the receiver STB. The receiver STB has, for example, a remote control receiver FE, which is also connected to the microprocessor P.
Die über den Fernbedienungsempfänger FE eingegangenen Fernbe- dienungssignale werden im Mikroprozessor P in nicht näher bezeichnete Daten für einen Rückkanal umgewandelt. Diese Daten werden an einen Telefonanschluß TA gegeben, beispielsweise über ein Modem MD an ein analoges Telefonnetz a/b, oder über eine ISDN-Schnittstelle ID an ein digitales Telefonnetz ISDN.The remote control signals received via the remote control receiver FE are converted in the microprocessor P into unspecified data for a return channel. This data is given to a telephone connection TA, for example via a modem MD to an analog telephone network a / b, or via an ISDN interface ID to a digital telephone network ISDN.
Erfindungsgemäß weist der Empfänger STB für digitale TV-Signale Zusatzeinrichtungen zur Durchführung der Videotelefonie auf .According to the invention, the receiver STB for digital TV signals has additional devices for carrying out the video telephony.
Hierzu ist beispielsweise im Empfänger STB ein Analog- Digitalwandler AD vorgesehen, der mit dem Prozessor P verbunden ist. Am Analog- Digitalwandler AD kann eine externe Videokamera VK angeschlossen werden. Weiter kann am Analog- Digital- wandler AD auch eine externes Mikrofon MK angeschaltet wer- den.For this purpose, an analog-digital converter AD is provided in the receiver STB, for example, which is connected to the processor P. An external video camera VK can be connected to the analog-digital converter AD. Furthermore, an external microphone MK can also be connected to the analog-digital converter AD.
Die Videosignale VD von der Videokamera VK und die Audiosignale AD des Mikrofons MK werden über den Analog- Digitalwandler AD, dem Prozessor P und entweder über das Modem MD oder über die ISDN-Schnittstelle ID an den Telefonanschluß TA gegeben. Über das Modem MD sind Videokamera VK und Mikrofon MK mit dem analogen Telefonnetz a/b, und über die ISDN-Schnittstelle ID mit dem digitalen Telefonnetz ISDN verbunden.The video signals VD from the video camera VK and the audio signals AD of the microphone MK are given to the telephone connection TA via the analog-digital converter AD, the processor P and either via the modem MD or via the ISDN interface ID. The video camera VK and the microphone MK are connected to the analog telephone network a / b via the modem MD, and to the digital telephone network ISDN via the ISDN interface ID.
Das Modem MD und/oder die ISDN-Schnittstelle ID sind bei dem erfindungsgemäßen Empfänger STB bidirektional ausgebildet. Die vom externen Telefonnetz am Telefonanschluß TA anliegenden Audio- und Videodaten AD, VD gelangen über das Modem bzw. über die ISDN-Schnittstelle ID an den Prozessor P. Der Pro- zessor P gibt diese Audio- und Videodaten AD, VD über den Digital- Analogwandler DA an die Schnittstelle SS. Die empfangenen Analog- und Videodaten AD, VD werden letztlich auf dem Bildschirm des Fernsehers TV dargestellt und über dessen eingebaute Lautsprecher wiedergegeben. Die Audiodaten AD können auch über einen externen Lautsprecher LP wiedergegeben werden.The modem MD and / or the ISDN interface ID are designed bidirectionally in the receiver STB according to the invention. The audio and video data AD, VD present at the telephone connection TA from the external telephone network reach the processor P via the modem or via the ISDN interface ID. The processor P outputs this audio and video data AD, VD via the digital Analog converter DA to the interface SS. The received analog and video data AD, VD are ultimately on the TV screen shown on TV and played through its built-in speakers. The audio data AD can also be reproduced via an external loudspeaker LP.
Der Anschluß der Videokamera VK und des Mikrofons MK am Empfänger kann STB kann auch drahtlos erfolgen. Auch der Anschluß des externen Lautsprechers LP zur Wiedergabe der empfangenen Audiodaten AD beziehungsweise -signale kann drahtlos erfolgen.The video camera VK and the microphone MK can be connected to the receiver STB can also be done wirelessly. The external loudspeaker LP can also be connected wirelessly in order to reproduce the received audio data AD or signals.
Bei einer Weiterbildung der Erfindung ist das Mikrofon MK in die Fernbedienung FB integriert . Die Fernbedienung FB dient in an sich bekannter Weise zur Steuerung des Empfängers STB.In a development of the invention, the microphone MK is integrated in the remote control FB. The remote control FB is used in a manner known per se to control the receiver STB.
Die vom Mikrofon aufgenommenen Audiodaten AD werden bei dieser Auεführungsform über den schon im Empfänger STB vorhandenen Fernbedienungsempfänger FE an den Prozessor P gegeben. Dieser gibt diese Audiodaten AD in bekannter Weise über das Modem MD bzw. die ISDN-Schnittstelle ID an den Telefonanschluß TA.In this embodiment, the audio data AD recorded by the microphone are passed on to the processor P via the remote control receiver FE already present in the receiver STB. This gives this audio data AD in a known manner via the modem MD or the ISDN interface ID to the telephone connection TA.
Zusätzlich zum Mikrofon MK kann die Fernbedienung FB auch einen Lautsprecher LP aufweisen. Bei dieser Ausführungsform ge- langen die über den Telefonanschluß TA empfangenen Audiodaten AD über das Modem MD beziehungsweise die ISDN- Schnittstelle ID, über den Prozessor P und eine zusätzlich im Empfänger STB vorzusehende Sendeeinrichtung SE an die Fernbedienung FB, und damit an den Lautsprecher LP.In addition to the microphone MK, the remote control FB can also have a loudspeaker LP. In this embodiment, the audio data AD received via the telephone connection TA reach the remote control FB, and thus the loudspeaker LP, via the modem MD or the ISDN interface ID, the processor P and an additional transmission device SE to be provided in the receiver STB.
Bei der Realisierung der Bild- bzw. Videotelefonie unter Verwendung eines Empfängers STB für digitale TV-Signale können schon vorhandene Komponenten beziehungsweise Funktionen des Empfängers STB benützt und dadurch Kosten eingespart werden. Die Schnittstellen des Empfängers STB zu einem externen Telefonnetz, d.h. das Modem MD beziehungsweise die ISDN-Schnitt- stelle ID, werden bei der Videotelefonie mitbenuzt, und eine zusätzliche Verkabelung entfällt.When realizing video or video telephony using a receiver STB for digital TV signals, already existing components or functions of the receiver STB can be used, thereby saving costs. The interfaces of the receiver STB to an external telephone network, ie the modem MD or the ISDN interface position ID, are also used in video telephony, and additional wiring is not required.
Die Videokamera VK kann in den Empfänger STB integriert sein. Das Mikrofon MK kann, wie schon ausgeführt, in der Fernbedienung FB integriert sein, oder es kann ebenfalls in den Empfänger STB selbst integriert werden. Das Mikrofon MK wird dann, vorzugsweise unter Verwendung der Freisprecheinrichtung, eingesetzt.The video camera VK can be integrated in the receiver STB. The microphone MK can, as already stated, be integrated in the remote control FB, or it can also be integrated in the receiver STB itself. The microphone MK is then used, preferably using the hands-free device.
Bei einer weiteren Ausführungsform kann der Anschluß des Empfängers STB für digitale TV-Signale zu einem externen Telefonnetz über ein Antennenkabel, beispielsweise über den Anschluß SA für eine Satelittenantenne realisiert sein. In a further embodiment, the connection of the receiver STB for digital TV signals to an external telephone network can be implemented via an antenna cable, for example via the connection SA for a satellite antenna.

Claims

Patentansprüche claims
1. Empfänger (STB) für digitale TV-Signale mit einem Mikroprozessor (P) zur Steuerung des Empfängers (STB) und zur Datenverarbeitung, mit einer Anpassungsschnittstelle (MD, ID) zur Verbindung des Mikroprozessors (P) mit einem Telefonanschluß (TA) , und mit einer Schnittstelle (SS) zur Abgabe von Audio- und Videosignalen (A, V) , gekennzeichnet durch1. Receiver (STB) for digital TV signals with a microprocessor (P) for controlling the receiver (STB) and for data processing, with an adaptation interface (MD, ID) for connecting the microprocessor (P) to a telephone connection (TA), and with an interface (SS) for delivering audio and video signals (A, V), characterized by
Mittel zur, insbesondere drahtlosen, Anbindung (AD, FE) einer Videokamera (VK) und eines Mikrofons (MK) an den Mikroprozessor' (P) , und eine bidirektional ausgebildete Anpassungsschnittstelle (MD, ID) , wobei die über den Telefonanschluß (TA) empfangenen Audio- und Videosignale (AD, VD) an der Schnittstelle (SS) abnehmbar sind, und die Audio- und Videosignale (AD, VD) von Videokamera (VK) und Mikrofon (MK) am Telefonanschluß (TA) anliegen.Means for, in particular wireless, connection (AD, FE) of a video camera (VK) and a microphone (MK) to the microprocessor (P), and a bidirectionally designed adaptation interface (MD, ID), the via the telephone connection (TA) received audio and video signals (AD, VD) at the interface (SS) are removable, and the audio and video signals (AD, VD) from the video camera (VK) and microphone (MK) are present at the telephone connection (TA).
2. Empfänger (STB) für digitale TV-Signale nach Anspruch 1, gekennzeichnet durch2. Receiver (STB) for digital TV signals according to claim 1, characterized by
Mittel zur, insbesondere drahtlosen, Anbindung eines externen Lautsprechers (LP) an den Mikroprozessor (P) , zur Wiedergabe der über den Telefonanschluß (TA) empfangenen Audiosignale (AD) .Means for, in particular wireless, connection of an external loudspeaker (LP) to the microprocessor (P), for reproducing the audio signals (AD) received via the telephone connection (TA).
3. Fernbedienung (FB) für einen Empfänger (STB) für digitale TV-Signale nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Mikrofon (MK) in die, insbesondere drahtlose, Fernbedienung (FB) integriert ist.3. Remote control (FB) for a receiver (STB) for digital TV signals according to one of the preceding claims, characterized in that the microphone (MK) in the, in particular wireless, remote control (FB) is integrated.
4. Fernbedienung (FB) nach Anspruch 3, dadurch gekennzeichnet, daß der Lautsprecher (LP) in die Fernbedienung (FB) integriert ist. 4. Remote control (FB) according to claim 3, characterized in that the loudspeaker (LP) is integrated in the remote control (FB).
EP98928135A 1997-05-05 1998-04-03 Video-telephony with a digital tv-signal receiver Ceased EP0981906A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19718984 1997-05-05
DE19718984 1997-05-05
PCT/DE1998/000959 WO1998051079A1 (en) 1997-05-05 1998-04-03 Video-telephony with a digital tv-signal receiver

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EP0981906A1 true EP0981906A1 (en) 2000-03-01

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EP98928135A Ceased EP0981906A1 (en) 1997-05-05 1998-04-03 Video-telephony with a digital tv-signal receiver

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