Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1988-05-05
1990-05-29
Canney, Vincent P.
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
368 40, H04N 576, G11B 509
Patent
active
049301152
ABSTRACT:
A method of and device for recording an information signal (Vc) on a record carrier (1) are revealed. The information words of the information signal are converted into code words (200) comprising a variable number of bits of a first logic value ("1"). The number of consecutive bits of the first logic value is at least equal to P. the number of consecutive bits of the second logic value ("0") is at least Q, P being an integer greater than or equal to 1 and Q being an integer greater than P. the code words are selected in such a way that for information words of successive values the associated code words differ for only one bit. During recording an elementary mark (54) is formed on the record carrier for every bit of the first logic value. Moreover a read device for the record carrier thus obtained is described.
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patent: 4677421 (1987-06-01), Taniyama
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IBM TDB, "Encoding Scheme with No Clock Transitions and Restricted Accumulated DC Content", Rooney, J. A., vol. 21, No. 4, Sept. 1978, pp. 1600-1604.
Baggen Constant P. M. J.
Gaal Erik W.
van Uijen Cornelis M. J.
Verboom Johannes J.
Canney Vincent P.
Lobato Emmanuel J.
U.S. Philips Corp.
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