The data to be recorded onto a recording medium is directly spread and then recorded onto the recording medium through a needle-shaped member, such as a probe. Upon reproducing the data, the data read from the recording medium is de-spread and reproduced....http://www.google.es/patents/US7385901?utm_source=gb-gplus-sharePatente US7385901 - Data recording/reproducing apparatus and method using needle-shaped member
Data recording/reproducing apparatus and method using needle-shaped member
