Patent ID: 7231136

Claim:
An apparatus for recording a signal onto a disk apparatus and reproducing the signal recorded onto the disk apparatus, comprising: signal inputting means for inputting the signal; time compression means for compressing the input signal along a time axis per a time T 1 to obtain a unit of time compressed writing signal; writing means for writing the unit of time compressed writing signal onto the disk apparatus via a head; reading means for reading an arbitrary unit of time compressed writing signal which was previously written onto the disk apparatus, from the disk apparatus via the head to obtain a unit of time compressed reading signal; time decompression means for decompressing the unit of time compressed reading signal along the time axis so as to obtain a decompressed signal for reproduction; and control means for controlling the writing means and the reading means such that a period during which the unit of time compressed writing signal is written onto the disk does not overlap with a period during which the unit of time compressed reading signal is read from the disk apparatus, wherein the time T 1 is set to be longer than T, where the time T is defined as a sum of seek time required for moving the head to write the unit of time compressed writing signal onto the disk apparatus, time required for writing the unit of time compressed writing signal onto the disk apparatus, seek time required for moving the head to read the unit of time compressed reading signal from the disk apparatus, and time required for reading the unit of time compressed reading signal from the disk apparatus.