Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1984-10-31
1986-09-02
Shoop, Jr., William M.
Communications: electrical
Audible indication
Percussion-type sound producer
375 18, H03M 112
Patent
active
046099077
ABSTRACT:
Method and apparatus is described for encoding and decoding a stream of randomly distributed binary bits representing digital data, including an encoder for encoding the bit stream to achieve a run length limited, partial response coding of the stream; a recording medium for recording the encoded stream; and a decoding system for recovering timing signals and a stream of data signals separately from the recorded stream using a first channel for decoding the recorded stream to recover a timing signal stream; therefrom; and a second channel for decoding the recorded stream to recover a stream of data signals therefrom.
REFERENCES:
patent: 3622986 (1969-12-01), Tang et al.
patent: 3647964 (1972-03-01), Tang
Adler Roy L.
Franaszek Peter A.
Hassner Martin
Schneider Richard C.
Bergmann Saul M.
Clark George E.
Dowd Thomas P.
International Business Machines - Corporation
Shoop Jr. William M.
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