Method of storing a real time stream of information signals on a disc like record carrier

摘要

A method of storing a substantially real time stream of information signals arranged in separate, consecutive data packets of digital format on a disc like record carrier. A new stream pack (S_PCK) is defined comprising a pack header and a multiple of source packets containing said data packets with corresponding added time stamps related to a time of arrival of said data packets. The pack header comprises data packet retrieval information, such as the number of new source packets in the stream pack and the effect of the start location of the first source packet in the stream pack. Preferably private stream 2 of the MPEG-format is employed for this new stream.

主权项

1. A method of storing a substantially real time serial stream of information signals representing information arranged in separate, consecutive data packets of digital format on a disc like record carrier, the disc like record carrier having units of recording where each unit has a predetermined size larger than a size of a data packet of the data packets, the method comprising acts of:
receiving the serial stream of information signals; detecting the data packets in the serial stream of information signals; establishing an application packet arrival time stamp (APAT) corresponding to a time of arrival of the data packets with respect to a Reference Time Base Counter, the application packet arrival time stamp (APAT) comprising several bits, each bit of the several bits corresponding to a predetermined time interval; selecting bits from the application packet arrival time stamp (APAT) for deriving an application time stamp (TM_APP); collecting a data packet and the related application time stamp (TM_APP) in a source packet, collecting multiple source packets in a stream pack (S_PCK) with a pack header, a size of the stream pack (S_PCK) corresponding to the predetermined size of the unit of recording of the disc like record carrier; storing source packet retrieval information in the stream pack (S-PCK); storing in the pack header information with respect to the application time stamp (TM_APP) for enabling retrieving a reference time base; and storing the stream packs (S_PCK) on the disc like record carrier.