System decoder having error correcting memories for high-speed data processing and transmission and method for controlling same
First Claim
1. A system decoder of an optical disk reproducing apparatus having a descrambler for restoring scrambled data in the process of encoding data, said system decoder comprising:
- first and second memories for correcting an error in the scrambled data; and
a memory controller for transmitting error-corrected data to said descrambler while data read and demodulate from said optical disk is written in one of said first and second memories, and error-correcting data written in the other one of said first and second memories while the demodulated and error-corrected data is written and read.
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Abstract
A system decoder having error correcting memories for high-speed data transmission and a method for controlling the same. A system decoder of an optical disk reproducing apparatus having a descrambler for restoring scrambled data in the process of encoding data, includes first and second memories for correcting an error, and a memory controller for transmitting error-corrected data to the descrambler while data read and demodulated from the optical disk is written in one of the first and second memories, and error-correcting data written in the other memory while the demodulated and error-corrected data is written and read.
36 Citations
28 Claims
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1. A system decoder of an optical disk reproducing apparatus having a descrambler for restoring scrambled data in the process of encoding data, said system decoder comprising:
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first and second memories for correcting an error in the scrambled data; and a memory controller for transmitting error-corrected data to said descrambler while data read and demodulate from said optical disk is written in one of said first and second memories, and error-correcting data written in the other one of said first and second memories while the demodulated and error-corrected data is written and read. - View Dependent Claims (2, 3, 4)
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5. A method for controlling first and second error correcting memories of an optical disk reproducing apparatus, comprising the steps of:
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alternatively writing one error correcting block in said first and second memories upon receiving demodulation data of data sectors each including main data, inner parity data and outer parity data; error-correcting a corresponding one error correcting block; and reading error-corrected data from one of said first and second memories when writing one error correcting block in the other one of said first and second memories. - View Dependent Claims (6, 7, 8)
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9. An optical disk reproducing apparatus to decode data stored on an optical disk, comprising:
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first and second memories to store the data read from the optical disk and correct errors in the data read from the optical disk; and a memory controller to perform the error correction of the data in one of the first and second memories and simultaneously writing new data read from the optical disk into the other one of said first and second memories. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An optical disk reproducing apparatus to decode data stored on an optical disk, comprising:
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first and second memories to store the data read from the optical disk and correct errors in the data read from the optical disk; and a memory controller to perform the error correction of the data in one of the first and second memories and simultaneously reading previously error corrected data from the other one of said first and second memories. - View Dependent Claims (21, 22)
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23. A method for controlling first and second error correcting memories of an optical disk reproducing apparatus which reads data from an optical disk, comprising the steps of:
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alternately writing the data into the first and second error correcting memories; and error correcting the data using one of the first and second error correcting memories while simultaneously writing the data into the other one of the first and second error correcting memories. - View Dependent Claims (24, 25, 26)
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27. A method for controlling first and second error correcting memories of an optical disk reproducing apparatus which reads data from an optical disk, comprising the steps of:
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error correcting the data by alternately using the first and second error correcting memories; and reading the error corrected data from one of the first and second error correcting memories while simultaneously error correcting the data in the other one of the first and second error correcting memories.
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28. A method for controlling first and second error correcting memories of an optical disk reproducing apparatus which reads data from an optical disk, comprising the steps of:
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(a) writing a first error block of the data into the first error correcting memory; (b) error correcting the error block of the data in the first error correcting memory and simultaneously writing a second error block of the data into the second error correcting memory; (c) error correcting the second block of the data of the second error correcting memory and, simultaneously, reading the corrected first error block from the first error correcting memory and then writing a third error correcting block into the first error correcting memory; (d) error correcting the third block of the data of the first error correcting memory and, simultaneously, reading the corrected second error block from the first error correcting memory and then writing a fourth error correcting block into the second error correcting memory; and (e) repeating the steps (a) through (d) until there is no more of the data to be read from the optical disk.
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Specification