Apparatus for recording and reproducing data
First Claim
1. Apparatus for recording input data on a recording medium, comprising:
- a memory for storing input data to be recorded in units of a predetermined quantity;
a first address control means for determining an address of said memory;
a second address control means for determining an address of said memory; and
an encoding means for adding at least an error correcting code to each predetermined quantity unit of input data, andwherein when the input data has no correlation with adjacent input data, the input data is sequentially written in said memory by said first address control means, read out therefrom, encoded by said encoding means, and recorded on the recording medium without changing the order of the input data, and when the input data has a correlation with adjacent input data, the input data is written in scrambled form in said memory by said second address control means, read out therefrom, as scrambled, and then the scrambled data is encoded by said encoding means and recorded on the recording medium.
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Accused Products
Abstract
A recording and reproducing apparatus comprising a memory for storing input data to be recorded in units of a predetermined quantity, a first address control means for generating only sequential memory addresses, a second address control means for generating non-sequential memory addresses, and means for adding a redundant bit such as an error correcting code and so on to each predetermined quantity unit of data, wherein when the input data has no correlation with adjacent input data, the input data is sequentially written in the memory by the first address control means, read out therefrom, added with the redundant bit, and sequentially recorded on the recording medium without changing the order of the inputted data, while when the input data has a correlation with adjacent input data, the input data is written in the memory by the second address control means in scrambled form, read out therefrom, as scrambled, and then the scrambled data is added to the redundant bit and recorded on the recording medium. Essentially the reverse operation takes place upon reproduction of the recorded signals.
63 Citations
11 Claims
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1. Apparatus for recording input data on a recording medium, comprising:
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a memory for storing input data to be recorded in units of a predetermined quantity; a first address control means for determining an address of said memory; a second address control means for determining an address of said memory; and an encoding means for adding at least an error correcting code to each predetermined quantity unit of input data, and wherein when the input data has no correlation with adjacent input data, the input data is sequentially written in said memory by said first address control means, read out therefrom, encoded by said encoding means, and recorded on the recording medium without changing the order of the input data, and when the input data has a correlation with adjacent input data, the input data is written in scrambled form in said memory by said second address control means, read out therefrom, as scrambled, and then the scrambled data is encoded by said encoding means and recorded on the recording medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Apparatus for reproducing data from a recording medium, the data being of the type in which it is encoded and recorded in the inputted order thereof on the recording medium while when the data has a correlation with adjacent data, it is scrambled, encoded and recorded on the recording medium, said apparatus comprising:
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a memory for storing reproduced data in predetermined quantity units; a first address control means for determining an address of said memory; a second address control means for determining an address of said memory; and a decoding means connected to the first address control means, the second address control means and the memory for correcting possible errors in the data for each predetermined quantity unit, wherein when the data has no correlation with adjacent data, the reproduced data is sequentially written in said memory at its corresponding address by said first address control means, read out therefrom, and outputted without changing the order of the reproduced data, and when the data has a correlation with adjacent data, the reporduced data is written in said memory by said second address control means, read out therefrom, descrambled, and outputted. - View Dependent Claims (9, 10, 11)
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Specification