Digital video signal recording/reproducing method and apparatus

Abstract

A digital video signal recording method for recording on a magnetic recording medium by using a rotary head, a first digital compressed video signal having a predetermined number of bytes in a packet format and a second digital compressed video signal having a predetermined number of bytes in a packet format which is generated from said first digital compressed video signal, including: adding information representing a sequence of arrangement of said second digital compressed video signal to said second digital compressed video signal, said sequence representing information including at least information indicating a sequence within a predetermined region; and recording said second digital compressed video signal thus added, on a predetermined region on said magnetic recording medium.

1 . (canceled)  
   
   
       2 . A digital video signal reproducing method for reproducing a first digital video signal, which has been recorded on a recording media, constituted by a picture signal compressed without using a correlation between frames and another picture signal compressed by using the correlation between the frames; and 
 a second video signal, which has been produced from said first digital video signal constituted by a picture signal compressed without using a correlation between frames, wherein:    the digital video signal reproducing method contains a first mode for reproducing the first digital video signal and a second mode for reproducing the second digital video signal;    in the first mode, the reproduced first digital signal is outputted at the same timing as an input timing at the recording operation;    in the second mode, the reproduced second digital signal is outputted at predetermined timing different from the input timing at the recording operation; and    a time reference of the output timing of the reproduced first and second digital signals is different from that of input timing.    
   
   
       3 . A digital video signal reproducing method as claimed in  claim 2  wherein: 
 said first and second digital video signals are packet format signals which consist of preselected bytes.    
   
   
       4 . A digital video signal reproducing method as claimed in  claim 2  wherein: 
 in said second mode, said reproduced second digital video signal is outputted in unit of the picture.    
   
   
       5 . A digital video signal reproducing method as claimed in  claim 4  wherein: 
 in said second mode in which said recording medium is traveled along a direction reversed to the direction during the recording operation, said second digital video signal reproduced according to the reverse order with respect to that of the recording operation is rearranged in unit of the picture along the same order as in the recording operation, and then the rearranged second digital video signal is outputted.    
   
   
       6 . A digital video signal reproducing apparatus for reproducing a first digital video signal, which has been recorded on a recording media, constituted by a picture signal compressed without using a correlation between frames and another picture signal compressed by using the correlation between the frames; and 
 a second video signal, which has been produced from said first digital video signal, constituted by a picture signal compressed without using a correlation between frames, wherein:    said digital video signal reproducing apparatus complies;    reproducing circuit including a first mode for reproducing the first digital video signal and a second mode for reproducing, the second digital video signal; and    output circuit for, in the first mode, the reproduced first digital signal is outputted at the same timing as an input timing at the recording operation;    in the second mode, the reproduced second digital signal is outputted at predetermined timing different from the input timing at the recording operation; and    a time reference of the output timing of the reproduced first and second digital signals is different from that of input timing.    
   
   
       7 . A digital video signal reproducing apparatus as claimed in  claim 6  wherein: 
 said first and second digital video signals are packet format signals which consist of preselected bytes.    
   
   
       8 . A digital video signal reproducing apparatus as claimed in  claim 6  wherein: 
 in said second mode, said reproduced second digital video signal is outputted in unit of the picture.    
   
   
       9 . A digital video signal reproducing apparatus as claimed in  claim 8  wherein: 
 in said second mode in which said recording medium is traveled along a direction reversed to the direction during the recording operation, said second digital video signal reproduced according to the reverse order with respect to that of the recording operation is rearranged in unit of the picture along the same order as in the recording operation, and then the rearranged second digital video signal is outputted.