Abstract: A method and device for test receiving alternative reception frequencies without interrupting the reception of specific user terminating information by use of only one reception chain. In certain information streams, such as that of a terrestial digital video broadcasting system (DVB-T), there is no provisions for time slots when an alternative reception frequency can be test received without interrupting flow of information. According to the invention the continuous flow of information is classified into specific user terminating information which is desired by the receiver in question, or user of, and into other information. The behavior of the specific user terminating information is used to determine when an interruption of the other information can occur for test receptions of alternative reception frequencies without interrupting the reception of the specific user terminating information.

Abstract: A Digital Video Broadcasting system comprises a service provider generating first digitally coded information; a broadcast network provider receiving the first digitally coded information, said broadcast network provider includes a protocol stack having an MPEG2 TS layer below an IP layer; and encapsulates digitally coded information into MPEG-2 TS packages, and an FEC layer between the IP layer and the MPEG-2 TS layer. The broadcast network provider calculates FEC parity information and generates second digitally coded information comprising the first digitally coded information and the FEC parity information; and including an application data table containing IP datagrams that are extractable without use of said FEC parity information. The receiving unit extracts FEC parity information from the received digitally coded information. Detection of a unit of information that may contain erroneous information so that it is non-identical to the first digitally coded information is thereby effected.

Abstract: A Digital Video Broadcasting system comprises a service provider generating first digitally coded information; a broadcast network provider receiving the first digitally coded information, said broadcast network provider includes a protocol stack having an MPEG2 TS layer below an IP layer; and encapsulates digitally coded information into MPEG-2 TS packages, and an FEC layer between the IP layer and the MPEG-2 TS layer. The broadcast network provider calculates FEC parity information and generates second digitally coded information comprising the first digitally coded information and the FEC parity information; and including an application data table containing IP datagrams that are extractable without use of said FEC parity information. The receiving unit extracts FEC parity information from the received digitally coded information. Detection of a unit of information that may contain erroneous information so that it is non-identical to the first digitally coded information is thereby effected.