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US 5,848,047 AGranted
Playback apparatus and playback method
AssigneeSony Corporation
InventorKensuke Fujimoto
Life of this patent
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AssigneeSony Corporation
InventorKensuke Fujimoto
Estimating the term…
An A/D converter supplies an interpolation circuit with sampled values which are obtained by sampling a playback signal coming from a read-out device in synchronization with a system clock signal. In the interpolation circuit, the value of the playback signal at the time the phase of a PLL clock phase signal P supplied by a PLL clockphase signal generator becomes zero is computed from the sampled values by using a linear interpolation technique. The interpolation value is then supplied to a binary conversion circuit and fed back to a phase error detecting circuit. The binary conversion circuit converts the interpolation value of the playback signal into a binary value which is then supplied to a circuit at the following stage. The phase error detecting circuit detects a zero cross of the interpolation value of the playback signal. The zero cross timing is then used for computing a phase error signal which is then output to the PLL clock phase signal generator by way of a loop filter. The PLL clock phase signal generator generates the PLL clock phase signal P which is supplied to the interpolation circuit as described above.
A playback apparatus comprising:
A playback method comprising the steps of:
A playback apparatus comprising:
A playback method comprising the steps of:
Dependencies are inferred from the claim text.