Video disc device and recording and reading method for a video disc which uses the method

摘要

A very high density video disc device is achieved by the use of an exchangeable recording medium having a recording capacity of at least 1.5 GB/inch<2> in an optical recording and reading device for recording or reading using a laser beam, or by the use of a device as the recording device which can record only once on a recording medium, or of a device which can record at least two repeated times.