Digital data detector

Details Digital data detector Digital data detector

G - Physics

11

B

329/5

G11B 20/10 (2006.01)

Patent

CA 1287882

ABSTRACT OF THE DISCLOSURE A digital modulation signal is sampled by an A/D converter in a predetermined cycle. A phase interval P between a zero level crossing and the current sampling point using sampling data Si+1 at the current sampling point and sampling data Si at a sampling point which is located one point before the current sampling point . A phase Pi+1of the current sampling point is found using the phase interval P, a phase Pi of the sampling point which is located one point before the current sampling point, a phase Pi-1 of a sampling point which is located two points before the current sampling point and a phase Pi-2 of a sampling point which is located three points before the current sampling point. A clock signal is detected using the phases Pi+1 and Pi. Digital data is detected using the phase interval P, the phase Pi+1 and the sampling data Si at the sampling point which is located one point before the current sampling point.

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