Dynamic information storage or retrieval – Binary pulse train information signal – Format arrangement processing for auxiliary information
Reexamination Certificate
2006-03-21
2006-03-21
Patel, Gautam R. (Department: 2655)
Dynamic information storage or retrieval
Binary pulse train information signal
Format arrangement processing for auxiliary information
C369S059240, C369S047270, C369S275300
Reexamination Certificate
active
07016288
ABSTRACT:
A predetermined synchronization pattern (40), a so-called VFO field, in, for example, the headers3of an information carrier. The predetermined synchronization pattern contains a first part with marks having a first length of (d+1) times the channel bit length, and spaces having a second length of (d+1) times the channel bit length, and a second part with marks having a third length of (k+1) times the channel bit length and spaces having a fourth length of (k+1) times the channel bit length and a third part, which third part contains marks having a length of (k−d) times the channel bit length and spaces having a length of (k−d) times the channel bit length. This sequence of patterns is advantageous for setting the dynamic range of an Automatic Gain Controlled (AGC) amplifier located within a device reading the information carrier.
REFERENCES:
patent: 0709842 (1996-05-01), None
patent: 05159462 (1993-06-01), None
patent: 11353810 (1999-12-01), None
patent: WO9750083 (1997-12-01), None
Stek Aalbert
Van Woudenberg Roel
Goodman Edward W.
Koninklijke Philips Electronics , N.V.
Ortiz-Criado J. L.
Patel Gautam R.
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