Coded data generation or conversion – Digital code to digital code converters
Reexamination Certificate
1999-12-07
2001-09-11
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
C341S060000, C341S061000
Reexamination Certificate
active
06288654
ABSTRACT:
BACKGROUND
1. Field of the Invention
The present invention relates to a data conversion apparatus and a data conversion method, a provider, and a data conversion system. In particular, the invention relates to a data conversion apparatus and a data conversion method, a provider, and a data conversion system which, for example, make it possible to easily distribute data that exist in a local region and easily concentrate distributed data in a local region.
2. Background of the Invention
For example, in the case of transmitting a series of certain data, to prevent noise or errors from being concentrated at a certain location of the series of data, the series of original data is transmitted after it is converted into another series in which data exiting in a local region of the series of original data are distributed.
Incidentally, among methods of distributing data existing in a temporally or spatially localized (hereinafter referred to as “localized” where appropriate) region is a method using random numbers. In this method, the order of a certain series of data is changed according to random numbers, whereby the series of original data is converted into another series of data in which data that were localized in the series of original data are distributed.
However, to inversely convert a series of converted data obtained by conversion using random numbers into a series of original data, that is, to concentrate distributed data in the original local region, a random sequence or a seed that was used in the conversion is necessary, that is, an initial value is necessary that is given to a prescribed recurrence formula in a case where random numbers are generated according to the recurrence formula.
SUMMARY OF THE INVENTION
An object of the present invention is to solve the above problem.
To attain the above object, the invention provides a data conversion apparatus for converting first data into second data, comprising an input section for receiving the first data; and a conversion section for converting the first data into the second data by moving each of the first data to a position of second positional information that is represented by a sequence of numbers that is obtained by reversing order of a sequence of numbers of first positional information that is an N-ary number and represents a position of each of the first data, where N is a natural number that is greater than or equal to 2.
REFERENCES:
patent: 5651121 (1997-07-01), Davies
patent: 5818877 (1998-10-01), Tsai et al.
patent: 6215421 (2001-04-01), Kondo et al.
Kondo Tetsujiro
Tanaka Kenji
Watanabe Yoshinori
Frommer William S.
Frommer & Lawrence & Haug LLP
Nguyen John
Sony Corporation
Young Brian
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