Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Alexander Zink

Olaf Korte

Markus Prosch

Christian Kellermann

Bernd Linz

Bernhard Grill

Gerald Schuller

Stefan Wabnik

Gerd Kilian

Herbert Thoma

Heinz Gerhaeuser

Nikolaus Faerber

Heinz Gerhauser

Roland Plankenbuehler

Thomas Jaumann

Nuria Llombart-Juan

Thomas Fruhwald

Hussain Mohammed

Michael Reichenbacher

Merce Serra

Roland Plankenbühler

Detlev Von Braumuller

Negjmedin Fazlija

Fetim Fazlija

Roland Plankenbuhler

Michael Reichenbaecher

Thomas Fruehwald

Michael Reichenbächer

Thomas Frühwald

For generating a signal to be transmitted original information is encoded into a main channel and a side channel, wherein the side channel is more robust against channel influences than the main channel. On the receiver side, when the receive quality is above a threshold, which is necessitated to execute a successful decoding of the main channel, the main channel is reproduced. If the receive quality falls below this threshold, however, the side channel is reproduced which may have less bits than the main channel and which is a correspondingly lower quality representation of the original information than the main channel.

Device and method for generating and decoding a side channel signal transmitted with a main channel signal

A transmission signal having a sequence of logical frames embed therein, is constructed such that each logical frame has a useful data section, wherein consecutive access units of an access unit stream are consecutively inserted into the useful data section of the sequence of logical frames, wherein each logical frame into which a begin of an access unit falls, has an access unit table having, per begin of the access units falling into the respective logical frame, a pointer pointing thereto.

Transmission concept for an access unit stream

Information point having a provider for providing a data structure having entries about different objects, wherein a limited geographical area is associated to every object, and wherein object information is associated to every object, a determiner for determining a geographical position of the information point, an examiner for examining whether the geographical position of the information point lies in the geographical area associated to an object, and a provider for providing object information associated to an object, if the examiner has determined that the information point lies in the geographical area of the object.

Information point

The navigation overhead and/or the content managing/updating overhead is reduced by providing link objects with condition data being associated with the link items of the link objects so that, depending on a check as to whether the condition data is fulfilled or not, an automatic handling of a link object may be performed. For example, the automatic handling may have an automatic appointing an object ID referred to by a link item of the link object that has condition data associated therewith which is fulfilled, as a newly-selected object ID.

Text-based information transmission

A system for presenting information regarding an object provided within a plurality of information sources to a user or a presentation means depending on a location of the user or the presentation means includes a means for determining the location, a means for selecting the information to be presented depending on the determined location and on one or several pre-settable selection criteria defining an information source from the plurality of information sources, and a means for outputting the information to be presented.

Method and device fore reproducing information

When generating a data stream, text data, an escape-start-sequence, a first number of data units, an escape-continuation-sequence and a second number of data units are entered into a data stream. A base decoder displays only the text data and skips the data units referenced by the escape-start-sequence and the escape-continuation-sequence, while an extension decoder reads those data units and processes them together.

Apparatus and method for generating a data stream and apparatus and method for reading a data stream

A text-based information transmission is made complying with a greater number of transport-layer systems by performing the fragmentation and de-fragmentation of the information object at the application-layer side rather than at transport-layer domain. By this manner, the text-based information service is not restricted to transport-layer systems accommodating the maximum size of the information objects. Rather, it is possible to adjust the fragmentation size of the fragments into which the information objects are fragmented to the maximum transport packet content section size offered by the transport layer within the application layer. The fragment size may even vary in a time-varying manner responsive to instructions from the transport layer posed onto the transport layer in consequence of time-varying transmission channel characteristics, for example.

Transmission scheme for text-based information

Provision is made for an information reproduction scheme which is intelligent and adjusts to the desires and needs of the user in a manner which is almost unnoticeable to the user and is associated with little or no additional effort on the part of the user, in that the selection, from pieces of information or a plurality of pieces of information, of the information to be reproduced is performed randomly on the basis of an adaptive probability distribution, and the adaptive probability distribution is adapted based on a captured behavior of the user upon the reproduction of the information selected. Consequently, the user's behavior is used as a controlled variable for adapting the adaptive probability distribution, the latter one defining, among the reproducible information and/or those information objects wherein the reproducible information is provided, the likelihood that a specific piece of information provided in an information object will or will not be selected in the next random selection for the next piece of information to be reproduced.

Method and device for reproduction of information

A transmitter for transmitting information data present in a plurality of data sets comprises an assigner for assigning offset information to one or more data sets of the plurality of data sets, the offset information indicating where the data set is to be written in a memory of a receiver. Furthermore, the transmitter comprises a transmitting unit for transmitting a plurality of data sets and the offset information associated with the data set. Hereby, it is possible to effect improved error correction as opposed to the prior art.

Transmitter for transmitting information data and receiver for receiving information data

It is a finding of the present invention that a user of a broadcast receiver gets text information significantly more quickly if a reference to another text information object in the broadcasting signal is contained in a text information object included in the broadcasting signal, which is currently displayed on the display of the broadcast receiver, and the user is enabled to cause the text information to be displayed to be changed from the text information of the current text information object to the text information of the text information object to which the current text information object refers by simple operation of a user selection means. Here, the additional effort is very limited since in today's broadcast receivers there mostly is an 'unoccupied' key, which only has an assigned function and thus is occupied in special situations of use of the broadcast receiver, and may be used as user selection means, as far as that goes. Due to the strong limitation of the available bandwidths of common broadcasting systems for data services, codings as efficient as possible are used in the generation of the text information objects to be transmitted.

Systems and methods for providing text-based messaging services in digital broadcasting systems

A method for providing an information unit to a user is described, wherein the information unit describes an object having a predetermined spatial relationship to the user. The method includes detecting a kind of movement or a position of the user. Depending on the detected kind of movement or the position of the user, a geographic selection criterion is adjusted, wherein, depending on the predetermined spatial relationship of object to user, the geographic selection criterion specifies whether the information unit is provided or not. If a location of the user is located such with respect to a geographic position of the user that the geographic selection criterion is met, the information unit for the object is reproduced. An advantage is that the concept may be employed in applications in which the user gets into different environments and situations which, in turn, require different geographic selection criteria.

Growing community of inventors

Stegaurach, Germany

Alexander Zink