G - Physics – 11 – B
Patent
G - Physics
11
B
352/19.1, 352/32
G11B 27/30 (2006.01) G11B 7/007 (2006.01) G11B 7/013 (2006.01) G11B 11/105 (2006.01) G11B 19/20 (2006.01) G11B 19/247 (2006.01) G11B 20/12 (2006.01) G11B 20/14 (2006.01) G11B 27/11 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/32 (2006.01)
Patent
CA 1319985
PHN 12.398 17.05.1988 Method of and apparatus for recording an information signal. A method of and apparatus (Fig. 4) for recording an information signal (Vi), in particular an EFM-modulated signal, are revealed, which information signal comprises time-code signals which alternate with first time-synchronisation signals. The record carrier (1) which is employed is provided with a preformed servo track (4) which exhibits a periodic track modulation whose frequency is modulated in conformity with the position-information signal (Fig. 21) The position- information signal (Fig. 2) comprises position-code signals (12) which alternate with position-synchronisation signals (11). During recording a fixed phase relationship between the time-synchronisation signals and the position-synchronisation signals (11) is maintained, so that the portion (141) of the servo track (4) in which the time-synchronisation signals are recorded are situated at fixed positions relative to the servo-track portions (140) which represent the position-synchronisation signals (11). (Figures 1 + 11).
588616
Hoeven Petrus C. J.
Van Der Zande Paulus C. M.
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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