PERALATAN UNTUK REPRODUKSI ATAU MEREKAM DATA ATAU INFORMASI

摘要

The present invention relates to a device for reproducing or recording data or information to a photodetector and digital error signal and evaluation signal processing. An object of the present invention, despite digital evaluation signal processing and without the need for almost no cost, to provide a device for reproducing or recording the number of scanning speed, data or information which requires considerable adaptability to. The present invention is based on the principle that thereby even though the data rate of the data or high-frequency signal generating a digital evaluation signal by a known analog-to-digital converter from even need an analog-to-digital converter for the radio-frequency or a video signal band, the audio technology putting. An analog-to-digital converter, may be used to generate a digital evaluation signal by the analog-to-digital converter which provides the envelope of one or more rather than a high-frequency signal to provide high frequency signals directly to the audio frequency band. In addition, there is proposed an envelope detector, the envelope detector is advantageously suitable both for the purpose of providing the object and the lower envelope for providing an upper envelope. The invention from a data track on the photodetector and digital error signal and there to evaluation signal processing can be used with priority to an apparatus for reproducing or recording data or information, by using this device, the data or the information recording medium or the number of the recording medium It is read or written to the track.