Data recording method and recording apparatus, and data outputting method

Abstract

When packeting content data and recording the packeted content data to a recording medium having a plurality of sectors made up of at least a header and packet data, if a remaining data length of the last sector of the plurality of sectors to which the packeted content data is recorded is smaller than the data length of the header, supplementary data equivalent to the remaining data length of the last sector is generated and the generated supplementary data is added to the content data so as to packet and record the content data with the supplementary data added thereto.

1 . A recording method comprising, when packeting content data and recording the packeted content data to a recording medium having a plurality of sectors made up of at least a pack header, a PES (packetized elementary stream) header, packet data and padding data, the step of: 
 storing the padding data while varying the data length of the packet data if a remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of an (n-1)th sector of the plurality of sectors is smaller than a data length obtained by adding a predetermined data length to the data length of the PES header.    
   
   
       2 . The recording method as claimed in  claim 1 , wherein the remaining part of the content data which could not be stored to the (n-1)th sector is packeted and thus recorded to the n-th sector.  
   
   
       3 . The recording method as claimed in  claim 1 , wherein when the remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of the (n-1)th sector of the plurality of sectors is larger than the data length obtained by adding th predetermined data length to the data length of the PES header, the content data is packeted and thus recorded.  
   
   
       4 . A recording device comprising: 
 a prediction unit for, when packeting and recording content data supplied to a recording medium having a plurality of sectors made up of at least a pack header, a PES (packetized elementary stream) header, packet data and padding data, predicting whether or not a remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of an (n-1)th sector of the plurality of sectors is smaller than a data length obtained by adding a predetermined data length to the data length of the PES header;    an encoding processing unit for, when encoding the supplied content data and packeting the encoded data, storing the padding data while varying the data length of the packet data on the basis of an output from the prediction unit; and    a recording unit for recording output data from the encoding processing unit to the recording medium.    
   
   
       5 . The recording device as claimed in  claim 4 , wherein the encoding processing unit packets the remaining part of the content data which could not be stored to the (n-1)th sector, to the n-th sector.  
   
   
       6 . The recording device as claimed in  claim 4 , wherein if the prediction unit determines that the remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of the (n-1)th sector of the plurality of sectors is larger than the data length obtained by adding the predetermined data length to the data length of the PES header, the content data is packeted and recorded without varying the data length of the packet data by the encoding processing unit.  
   
   
       7 . A data outputting method comprising, when packeting content data to a plurality of packs made up of at least a pack header, a PES (packetized elementary stream) header, packet data and padding data and outputting the packeted content data, the steps of: 
 storing and outputting the padding data while varying the data length of the packet data if a remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of an (n-1)th pack of the plurality of packs is smaller than a data length obtained by adding a predetermined data length to the data length of the PES header.    
   
   
       8 . The data outputting method as claimed in  claim 7 , wherein the remaining part of the content data which could not be stored in the (n-1)th pack is packeted and thus outputted to the n-th pack.  
   
   
       9 . The data outputting method as claimed in  claim 7 , wherein when the remaining data length obtained by subtracting the data length of the pack header, the data length of the PES header and the data length of the packet data from the data length of the (n-I)th pack of the plurality of packs is larger than the data length obtained by adding the predetermined data length to the data length of the PES header, the content data is packeted and thus outputted.