Method and Device for the Transfer of a Data Flow a Data Source to a Data Sink

• Main Authors: WEBER MICHAEL, HUETTER INGO
• Format: Patent
• Language: English
• Published: 24.09.2009
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

In the transfer of AV data flows, especially in a network environment, a delayed transition from one operating mode to the other operating mode will be possible when changing the operating mode from e.g. normal replay to fast forward search. This is due to the fact that-in the transfer from data source to data sink different buffer memory stages must be passed before the transferred data finally come to decoding. When the request for changing the operating mode comes, the data already present in the buffer memories must first be processed before the actually requested new data come to be decoded. For the solution of the problem described, it is suggested according to the invention that-after the request of changing the operating mode-the undesirable data in the buffer memories are quickly eliminated through suitable measures so that the desired data can then be decoded faster. To do that, an identifier for the new operating mode is inserted in the data flow on the part of the data source device. The decoder driver of the decoder in the data sink device will search for the inserted identifier in the data flow and reject all data packets which are not combined with this identifier. Thus, the buffer memory stages are discharged fast and a smooth transition with the change of operating mode will be realized.