Recording/reproducing method and recording/reproducing device

A recording/reproducing device, comprising:

• a buffer memory functioning as a working buffer memory;
• a reading unit configured to read an uncompressed data from a first recording medium;
• a first decoding unit configured to generate a first decoded data by decoding the uncompressed data and storing the generated first decoded data in the buffer memory;
• a compression recording unit configured to read the first decoded data from the buffer memory at a speed higher than a normal reproduction speed of the uncompressed data to generate a compressed data and record the generated compressed data in a second recording medium;
• a decompression unit configured to read the compressed data from the second recording medium at a speed higher than the normal reproduction speed and decompress the read compressed data to generate a decompressed data;
• a second decoding unit configured to generate a second decoded data by decoding the decompressed data and store the generated second decoded data in the buffer memory;
• and
• a unit-volume recording completion monitoring unit configured to monitor whether a predefined unit volume of the compressed data is recorded in the second recording medium to determine whether the second decoded data should be stored in the buffer memory in place of the first decoded data based on a monitoring result thereby obtained, wherein
• the unit-volume recording completion monitoring unit allows the first decoded data to be recorded in the buffer memory when it is determined that the predefined unit volume of the compressed data is not yet recorded in the second recording medium, and
• the unit-volume recording completion monitoring unit suspends the recording of the first decoded data outputted from the first decoding unit in the buffer memory and then allows the second decoded data to be recorded in the buffer memory when it is determined that the predefined unit volume of the compressed data is already recorded in the second recording medium.