G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1
G11B 19/02 (2006.01) G11B 7/00 (2006.01) G11B 7/007 (2006.01) G11B 7/013 (2006.01) G11B 11/105 (2006.01) G11B 19/247 (2006.01) G11B 20/12 (2006.01) G11B 27/034 (2006.01) G11B 27/11 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01) G11B 27/32 (2006.01)
Patent
CA 2016055
Information-recording system, and recording device and record carrier for use in such an information recording system. By means of a preformed track modulation (Fig. 1c, Fig. 1d) an auxiliary signal is recorded on a record carrier (1) of an inscribable type in a servo track (4) intended for information recording. The auxiliary signal comprises address codes (AC) and auxiliary codes (HC) which can be distinguished from each other. The address codes specify the address of the track portion in which said codes are recorded, and the auxiliary codes provide additional information about the record carrier, such as references to a track portion having a specific address code. A recording device (Fig. 8) comprises means (82, 86, 88, 90, 92) for reading the auxiliary signal recorded by means of the track modulation and means (93) for separately detecting the presence of address codes (AC) and the presence of auxiliary codes (HC) in the auxiliary signal.
Roth Rudolf
Van Der Zande Paulus Christianus Maria
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
N.v. Philips Gloeilampenfabrieken
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