Television – Two-way video and voice communication – User positioning
Reexamination Certificate
1997-03-11
2001-07-10
Eisenzopf, Reinhard J. (Department: 2614)
Television
Two-way video and voice communication
User positioning
C348S014160, C348S014090, C348S014160, C348S086000, C455S001000, C455S001000
Reexamination Certificate
active
06259471
ABSTRACT:
TECHNICAL FIELD
The invention relates to an apparatus for transmitting video data into an integrated services digital network (NET). It is also directed to an apparatus for transmitting request signals into an integrated services digital network (NET). It is still further directed to a service for transmitting video data via an integrated services digital network.
BACKGROUND OF THE INVENTION
From the not yet published patent application P 1 95 24 704.3, there is known a service for transmitting video data of a video movie via a integrated services digital network. In a video server, there are stored several video movies, which are first selected from video telephones via request signals and subsequently transmitted to the respective video telephones via a switched connection. The encoding of the video data of the video movies is prearranged. The service is restricted to downloading of video movies in the form of a sequence of video images.
SUMMARY OF THE INVENTION
Therefore, it is an object of the invention to transmit video data in a more flexible manner.
This object is solved by an apparatus for transmitting video data into an integrated services digital network, said apparatus comprising a transmitting unit for transmitting the video data over a switched connection, a receiving unit for receiving request signals, an encoding unit for encoding the video data using at least two different encoding methods, and a control unit with which the encoding method is selectable in accordance with information in the received request signals.
This object is also solved by an apparatus for transmitting request signals into an integrated services digital network, said apparatus comprising a transmitting unit for transmitting the request signals over a switched connection, a receiving unit for receiving video data, a decoding unit for decoding the received video data by at least two different decoding methods, and a control unit for detecting the method by which the received video data were encoded and for selecting the decoding method in the decoding unit.
The above object is still further solved by a service for transmitting video data via an integrated services digital network, wherein the video data to be transmitted are requested by request signals, wherein the requested video data are transmitted over a switched connection and wherein the encoding method used for transmitting the requested video data is selected from at least two different encoding methods through request signals.
It is a particular advantage of the invention that received and stored still images can be processed later, e.g. the images can be printed by facsimile equipment or transmitted to a video telephone.
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Peters Wolfgang
Schneider Gerhard
Alcatel
Desir Jean W.
Eisenzopf Reinhard J.
Ware Fressola Van der Sluys & Adolphson LLP
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