In an optical recording medium having a track including plural pits formed based on first data to be recorded and lands defined between neighboring pits, these pits are recorded as they are deformed based on the second data. The first and second data are synthesized and reproduced to realize audio reproduction...http://www.google.com.au/patents/US6810004?utm_source=gb-gplus-sharePatent US6810004 - Optical recording medium, recorder for optical recording medium, method for recording the same, reproducing device and reproducing method therefor
