ADIP demodulation method and apparatus
First Claim
1. An ADIP demodulation apparatus for providing ADIP information according to a wobble signal modulated with the ADIP information, the ADIP demodulation apparatus comprising:
- a digitize unit for receiving the wobble signal and generating a wobble pulse;
a phase locked loop for generating a reference wobble signal according to the wobble pulse;
an ADIP channel bit determination unit for determining an ADIP channel bit according to the reference wobble signal and the wobble pulse; and
a decoder for decoding the ADIP channel bit to generate the ADIP information.
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Abstract
An ADIP demodulation method and apparatus, which are used in an optical disk driver to generate the ADIP information according to a wobble signal. The apparatus includes a slicing unit for receiving the wobble signal and generating a wobble pulse, a phase locked loop for generating a reference wobble signal with the same frequency and phase as the wobble pulse and a reference clock with frequency higher than the wobble pulse, a channel bit generator for generating a channel bit signal according to the reference wobble signal and the wobble pulse, and a decoder for decoding to ADIP information according to the channel bit signal. The channel bit generator generates a difference signal between the wobble pulse and the reference wobble signal, and outputs the channel bit signal according to the difference signal.
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Citations
10 Claims
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1. An ADIP demodulation apparatus for providing ADIP information according to a wobble signal modulated with the ADIP information, the ADIP demodulation apparatus comprising:
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a digitize unit for receiving the wobble signal and generating a wobble pulse;
a phase locked loop for generating a reference wobble signal according to the wobble pulse;
an ADIP channel bit determination unit for determining an ADIP channel bit according to the reference wobble signal and the wobble pulse; and
a decoder for decoding the ADIP channel bit to generate the ADIP information. - View Dependent Claims (2, 3, 4, 5)
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6. An ADIP demodulation method for providing ADIP information according to a wobble signal modulated with the ADIP information, the ADIP demodulation method comprising the steps of:
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generating a wobble pulse by digitizing the wobble signal;
generating a reference wobble signal according to the wobble pulse;
determining an ADIP channel bit according to the reference wobble signal and the wobble pulse; and
decoding the ADIP channel bit to generate the ADIP information. - View Dependent Claims (7, 8, 9, 10)
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Specification