Apparatus for discriminating between different optical disk types
The apparatus includes a first comparator 12 for comparing a voltage corresponding to a first sub-beam inputted from the RF amplifier 11 and a previously set reference voltage, a second comparator 13 for comparing a voltage corresponding to a second sub-beam inputted from the RF amplifier 11 with a...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
07.07.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | The apparatus includes a first comparator 12 for comparing a voltage corresponding to a first sub-beam inputted from the RF amplifier 11 and a previously set reference voltage, a second comparator 13 for comparing a voltage corresponding to a second sub-beam inputted from the RF amplifier 11 with a previously set reference voltage, a gate circuit 14 for outputting a low level signal when two signals inputted from the first comparator 12 and second comparator 13 are identical and outputting a high level signal when two signals outputted from the same are not identical, a controller 15 for judging the type of a disk mounted in the deck in accordance with an output signal inputted from the gate circuit 14, and a servo unit 16 for controlling the driving of the optical type pick-up apparatus in accordance with a control signal from the controller 15. |
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Bibliography: | Application Number: GB19980028454 |