Dynamic magnetic information storage or retrieval – Recording for changing duration – frequency or redundant...
Patent
1996-03-22
1997-09-30
Dinh, Tan
Dynamic magnetic information storage or retrieval
Recording for changing duration, frequency or redundant...
386 33, 386109, G11B 500
Patent
active
056731540
ABSTRACT:
A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal which controls a performance of a recording apparatus. The transmitted bit-compressed signal and the transmitted control signal are transmitted after adding of a parity signal thereto and effecting modulation thereof. The receiving apparatus includes a reception unit for receiving the transmitted bit-compressed signal and the transmitted control signal, a demodulator for demodulating the bit-compressed signal and the control signal outputted by the reception unit in a manner corresponding to the modulation thereof. An error correcting unit receives the demodulated bit-compressed signal and the demodulated control signal for correcting errors therein in accordance with the parity signal added thereto and for at least outputting an error-correcting bit-compressed signal and an error-corrected control signal. A control circuit is provided for detecting the error-corrected control signal from the error correction unit and for controlling performance of the recording apparatus in response to the detected error-corrected control signal. Furthermore, a bit expansion unit is provided for receiving the error-corrected bit-compressed signal and for bit-expanding the error-corrected bit-compressed signal corresponding to the bit-compression thereof.
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Arai Hideo
Hosokawa Kyoichi
Nishimura Keizo
Owashi Hitoaki
Shibata Akira
Dinh Tan
Hitachi , Ltd.
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