Sony Corporation

Nobuaki Baba

Mitsuru Harada

Tatsuo Tsujibayashi

Takahiro Fukutani

Mutsuko Ochiai

Minoru Ootsuka

Katsuya Kamada

A recording apparatus capable of recording data either in a current-used format or a new format on a recording medium accommodated in a current-used tape cassette or a new tape cassette. The recording apparatus comprises a first writing prohibition detection switch to be inserted to an discrimination hole formed on both cassettes and receded in accordance with an open/close state of a writing prohibition discrimination hole provided on the current-used cassette, a second writing prohibition detection switch to be receded in accordance with an open/close state of a writing prohibition discrimination hole formed in the new tape cassette, and a cassette type detection switch to be inserted to an discrimination hole formed in the new tape cassette and receded by a side surface of the current-used cassette. A control circuit discriminates a new tape cassette from the current-used tape cassette.

Recorder and cassette containing recording medium

A recording and reproducing apparatus is provided in which recording and reproducing are performed with respect to an existing format cassette having an existing erroneous erasure prevention switch for preventing erroneous erasure of data recorded with the existing format and a new format cassette having a first erroneous erasure prevention switch located at a position corresponding to the position of the existing erroneous erasure prevention switch and having a second erroneous erasure prevention switch for preventing erroneous erasure of data recorded with a new format; wherein at the time of reproduction whether it is the existing format cassette or the new format cassette is judged based on data obtained from the reproduction of the existing format and new format cassettes to reproduce the cassette. Hereupon, in the new format cassette, the first erroneous erasure prevention means is always kept in a state of preventing the erroneous erasure.

Recording and reproducing apparatus for preventing erroneous erasure

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Tokyo, Japan

Nobuaki Baba