Starguide Digital Networks, Inc.

Institut Fuer Rundfunktechnik Gmbh

Institut Fur Rundfunktechnik Gmbh

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

Robert Sedlmeyer

Detlev Wiese

Jens Groh

Heinz Gerhaeuser

Dieter Seitzer

Martin Link

Gerhard Stoll

Detlef Wiese

Klaus Merkel

Matthias Hammer

Alexander Erk

Sebastian Kilger

Mark Gulbahar

Georg Plenge

Wolfgang Krafft

Andreas Brefort

Klaus Rosinski

Mark GÜLBAHAR

A special instruction for not encoding a content is incorporated into access authorization data contained in the received signal, so that within a unified system for transmitting and receiving of encoded or non-encoded sound and/or picture contents, it is possible to meet the requirement of public broadcasting and 'free-to-air' program providers for a non-encoded processing and/or display and/or storage of freely accessible contents for the end user. The instruction signalizes that the sound and/or picture contents, once received, must be available in the non-encoded form to the end user. The access authorization data remain added to the sound and/or picture contents, even in cases of a cascading, encoded retransmission, or remains logically linked thereto by suitable means, even if transmitted physically separate along with the picture and/or sound contents. During the processing and/or display and/or storage of the picture and/or sound contents retransmitted in the encoded form, the special instruction triggers a decoding of the picture and/or sound contents, at least at the end of the retransmission cascade.

Method and arrangement for retransmitting as well as processing and/or displaying and/or storing of sound and/or picture contents, and device for processing and/or displaying and/or storing of sound and/or picture contents

In a peer-to-peer (P2P) system, in each individual transmitting peer (), the incoming data stream is divided logically and with regard to time into different parts, which are buffered in a volatile memory () and are transmitted to the receiving peers () on different paths by means of a peer-to-peer transmission mechanism (). In a receiving peer (), the received parts of the subdivided data stream are buffered in a volatile memory () and are reassembled into a complete data stream. Further, in the receiving peer (), the parts of the subdivided data stream, buffered by the volatile memory (), are copied into a persistent memory (), from where they are copied back into the volatile memory () at a later point in time if necessary. A fraction of the received data is excluded from persistent storing by selecting parts of the subdivided data stream.

Peer-to-peer transmission system for data streams

In order to reduce the multitude of data for transmitting and converting use authorizations, which are received either encoded or non-encoded together with sound and/or picture contents in signals from optional networks, it is proposed to reduce the hierarchically structured use authorization information in the form of a tree structure before transmitting it further, such that non-occupied tree branches are detected and marked as not relevant, wherein the tree branches marked as not relevant are not included during the further transmitting of the use authorization information.

Method for retransmission of use authorization information

A method and apparatus for determining the receptivity of radio signals at any given receiving site in an area covered by at least one transmitter by comparing data stored and continuously updated in a receiver against data transmitted, and identifying and selecting from all the transmitted radio signals a preferred radio signal.

Method and apparatus for determining the receptivity of radio signals

A method is provided for transmitting or storing, over an interference affected channel, digital audio signals that have been subjected to data reduction, resulting in a reduced data, digital audio signal that is present in at least one of the time domain and spectral domain, depending on source coding. An interfered-with signal section is detected in the reduced data, digital audio signal at a receiving end. The interfered-with reduced data, digital audio signal section is masked by one of (a) muting only interfered-with spectral values or subbands, or groups of spectral values or subbands in the signal section and (b) replacing only interfered-with spectral values or subbands, or groups of spectral values of subbands in the signal section with a signal component form the same channel or an adjacent channel including at least one of time domain sampled values, spectral domain sampled values, scale factors, and control information, depending on the source coding of the reduced data, digital audio signal.

Error concealment in digital transmissions

A method is provided for transmitting or storing, over an interference affected channel, digital audio signals that have been subjected to data reduction, resulting in a reduced data, digital audio signal that is present in at least one of the time domain and spectral domain, depending on source coding. An interfered-with signal section is detected in the reduced data, digital audio signal at a receiving end. The interfered-with reduced data, digital audio signal section is masked by one of (a) muting only interfered-with spectral values or subbands, or groups of spectral values or subbands in the signal section and (b) replacing only interfered-with spectral values or subbands, or groups of spectral values or subbands in the signal section with a signal component from the same channel or an adjacent channel including at least one of time domain sampled values, spectral domain sampled values, scale factors, and control information, depending on the source coding of the reduced data, digital audio signal.

Method of transmitting and storing digitized audio signals over

Process for finding the overall monitoring threshold during a

Transmission and storage of multi-channel audio-signals when using bit

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Ismaning, Germany

Robert Sedlmeyer