Apparatus for reading a disc-shaped record carrier

Details Apparatus for reading a disc-shaped record carrier Apparatus for reading a disc-shaped record carrier

H - Electricity

04

N

352/32.21

H04N 5/84 (2006.01) G11B 7/00 (2006.01) G11B 7/005 (2006.01) G11B 7/013 (2006.01) G11B 7/13 (2006.01) H04N 9/835 (2006.01)

Patent

CA 1070832

ABSTRACT: An apparatus for reading a disc-shaped record carrier on which signals are recorded in parallel tracks in optically coded form. Said signal is read with the aid of a beam of radiation, which after interaction with the record carrier impinges on a detector unit. Said detector unit comprises two read detectors, which in a direction parallel to the image of the track direc- tion of the record carrier on the detector unit are off- set relative to each other. A first combination circuit supplies the difference of the output signals of said read detectors to a first signal processing channel, which processes the part of comparatively high fre- quency of the frequency spectrum of the recorded sig- nal. A second combination signal supplies the sum of the output signals of said read detectors to a second processing channel, which processes the part of com- paratively low frequency of the frequency spectrum of the recorded signal. - 19 -

237012

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