Optical disc recording apparatus, optical disc reproducing apparatus, and multi-layered optical disc
First Claim
1. An optical disc recording apparatus for recording an image signal on a multi-layered optical disc having a plurality of recording layers, comprising:
- a signal generator for sampling a high-resolution image signal at a predetermined rate to generate a low-resolution image signal, and generating a part of the high-resolution image signal except for the low-resolution image signal as a modified image signal;
a first encoder for encoding the low-resolution image signal with a first coding scheme to generate a first encoded signal;
a second encoder for encoding the modified image signal with a second coding scheme different from the first coding scheme to generate a second encoded signal;
a signal modulator for modulating the first encoded signal and the second encoded signal to generate a first modulated signal and a second modulated signal, respectively; and
an optical pickup unit for writing the first modulated signal into a first recording layer of the multi-layered optical disc, and writing the second encoded signal into a second recording layer of the multi-layered optical disc.
1 Assignment
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Accused Products
Abstract
Disclosed is an optical recording disc capable of limiting the redundancy of recorded information and reducing facility investments and manufacturing cost. The optical disc recording apparatus comprises a signal generator for generating a low-resolution image signal by sampling a high-resolution image signal at a predetermined rate, and generating a part of the high-resolution image signal except for the low-resolution image signal as a modified image signal; an encoder for encoding the low-resolution image signal with a first coding scheme to generate a first encoded signal; another encoder for encoding the modified image signal with a second coding scheme different from the first coding scheme to generate a second encoded signal; a signal modulator for modulating the first encoded signal and second encoded signal to generate a first modulated signal and a second modulated signal, respectively; and an optical pickup unit for writing the first modulated signal into a first recording layer of the multi-layered optical disc and writing the second encoded signal into a second recording layer of the multi-layered optical disc.
29 Citations
14 Claims
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1. An optical disc recording apparatus for recording an image signal on a multi-layered optical disc having a plurality of recording layers, comprising:
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a signal generator for sampling a high-resolution image signal at a predetermined rate to generate a low-resolution image signal, and generating a part of the high-resolution image signal except for the low-resolution image signal as a modified image signal;
a first encoder for encoding the low-resolution image signal with a first coding scheme to generate a first encoded signal;
a second encoder for encoding the modified image signal with a second coding scheme different from the first coding scheme to generate a second encoded signal;
a signal modulator for modulating the first encoded signal and the second encoded signal to generate a first modulated signal and a second modulated signal, respectively; and
an optical pickup unit for writing the first modulated signal into a first recording layer of the multi-layered optical disc, and writing the second encoded signal into a second recording layer of the multi-layered optical disc. - View Dependent Claims (2, 3, 4, 5)
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6. An optical disc reproducing apparatus for reproducing an image signal from a multi-layered optical disc having a plurality of recording layers, comprising:
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an optical pickup unit for reading a first modulated signal from a first recording layer of the multi-layered optical disc, and reading a second modulated signal from a second recording layer of the multi-layered optical disc;
a signal demodulator for demodulating the first modulated signal and the second modulated signal to generate a first encoded signal and a second encoded signal, respectively;
a first decoder for decoding the first encoded signal with a first decoding scheme to generate a low-resolution image signal;
a second decoder for decoding the second encoded signal with a second decoding scheme different from the first decoding scheme to generate a modified image signal; and
a signal combiner for combining the low-resolution image signal with the modified image signal to generate a high-resolution image signal. - View Dependent Claims (7, 8, 9, 10)
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11. A multi-layered optical disc having a plurality of recording layers, comprising:
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a first recording layer for recording a first encoded signal generated by encoding a low-resolution image signal generated by sampling a high-resolution image signal at a predetermined rate with a first coding scheme; and
a second recording layer for recording a second encoded signal generated by encoding a part of the high-resolution image signal except for the low-resolution image signal with a second coding scheme different from the first coding scheme. - View Dependent Claims (12, 13, 14)
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Specification