Recording/reproducing method and device with supplementary data storage and output

A digital information recording/reproducing method, comprising the steps of:

• generating compressed information by compressing inputted digital information;
• controlling writing of the compressed information to a first record medium and a second record medium whose read-out speed of information is higher than that of the first record medium, wherein at least some of the compressed information written to the second record medium is also written to the first record medium;
• and
• responsive to the first record medium being in at least one of a halt state and a recording state, outputting information read out from the second record medium.

A digital information recording/reproducing device, comprising:

• compressing means for compressing inputted digital information;
• means for controlling writing of compressed information from the compressing means to a first record medium and second record medium whose read-out speed of information is higher than that of the first record medium, wherein at least some of the compressed information written to the second record medium is also written to the first record medium;
• selecting means for selecting between first compressed information read out from the first record medium and second compressed information read out from the second record medium for output;
• and
• means for expanding compressed information from the selecting means;
• wherein, in response to the first record medium being in at least one of a halt state and a recording state, the selecting means selects the second compressed information read out from the second record medium for output.