Recording and reproducing an MPEG information signal on/from a record carrier
AssigneeU.S. Philips Corporation
InventorsWilhelmus J. Van Gestel, Ronald W. J. J. Saeijs, Imran A. Shah
Life of this patent
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Abstract
During recording of an MPEG information signal on a record carrier (40), transport packets (P.sub.k) are stored in signal blocks in a track (1) on the record carrier (40). x transport packets of the MPEG information signal are stored in the second block sections (SB) of y signal blocks, where x and y are integers, x.gtoreq.1 and y>1, more specifically, y>x. Further, third block sections (TB) are present in one or more of the second block sections in the y signal blocks of a group for storing additional information, which additional information relates to the specific application of recording and reproducing the MPEG information signal on/from the record carrier.
Claims9
Recording arrangement for recording an information signal in tracks on a record carrier, the recording arrangement comprising
- an input terminal for receiving the information signal,
- channel encoding means for channel encoding the information signal so as to obtain a channel signal suitable for recording in a track on said record carrier,
- writing means for writing the channel signal in the track, the channel signal comprising sequential signal blocks, each signal block comprising a first block section which comprises a synchronization signal and a second block section which comprises a number of channel bytes, characterized in that the information signal is an MPEG information signal in accordance with an MPEG format, the MPEG information signal consisting of a single sequential series of transport packets having a single priority, that the channel encoding means are adapted to store all information except sync bytes included in each one of a plurality of groups of x transport packets of the MPEG information signal in the second block sections of a corresponding distinct one of a plurality of groups of y signal blocks of the channel signal, that the second block section of at least the first signal block of each group of y signal blocks comprise a third block section for storing identification information identifying the signal block as being the first signal block of a group of y signal blocks, and that x and y are integers such that x.gtoreq.and y>1.
Reproducing arrangement for reproducing an information signal that has been recorded in the form of a channel signal in tracks on a record carrier, the reproducing arrangement comprising
- reading means for reading the channel signal from a track,the channel signal comprising sequential signal blocks, each signal block comprising a first block section which comprises a synchronization signal and a second block section which comprises a number of channel bytes,
- channel decoding means for channel decoding the channel signal so as to obtain the information signal,
- an output terminal for applying the information signal, characterized in that the information signal recorded in the tracks is an MPEG information signal in accordance with an MPEG format, the MPEG information signal consisting of a single sequential series of transport packets having a single priority, all information except sync bytes in each one of a plurality of groups of x transport packets of the MPEG information signal being stored in the second block sections of a corresponding distinct one of a plurality of groups of y signal blocks of the channel signal, that x and y are integers such that x.gtoreq.1 and y>1, that the second block section of at least the first signal block of each group of y signal blocks comprise a third block section for storing identification information identifying the signal block as being the first signal block of a group of y signal blocks, the reproducing arrangement further comprising
- first retrieving means for retrieving the information contained in the x transport packets of the MPEG information signal from the group of y signal blocks,
- second retrieving means for retrieving said identification information from the third block sections of the first signal blocks in each group of y signal blocks.
Dependencies are inferred from the claim text.