| 摘要 |
<p>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 direction of the record carrier on the detector unit are offset 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 frequency of the frequency spectrum of the recorded signal. 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 comparatively low frequency of the frequency spectrum of the recorded signal.</p> |
