Method for converting a digital signal into another digital sign

Details Method for converting a digital signal into another digital sign Method for converting a digital signal into another digital sign

1991-04-15

1992-06-30

Logan, Sharon D.

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

375122, H03M 730, H04N 980

Patent

active

051267373

ABSTRACT:
A conversion method converts a first digital signal having a first sampling period to a second digital signal having a second sampling period which is different from the first sampling period. The method comprises four steps. In the first step, the first digital signal is oversampled. In the next step, the sample value of the oversampled signal maintains an identical value during a short period corresponding to a common multiple of the first sampling period and the second sampling period. In the third step, an interpolation process is carried out. Finally, the second digital signal is outputted by sampling at the second sampling period.

REFERENCES:
patent: 4109110 (1978-08-01), Gingell
patent: 4281318 (1981-07-01), Candy et al.
patent: 4460890 (1984-07-01), Busby
patent: 4870661 (1989-09-01), Yamada et al.
patent: 4903019 (1990-02-01), Ito

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