Sample rate conversion

Details Sample rate conversion Sample rate conversion

1997-10-28

1999-04-06

Ngo, Chuong Dinh

Boots, shoes, and leggings

G06F 1717

Patent

active

058926950

ABSTRACT:
A filter device for changing a sample rate of a discrete representation, e.g., to change a size of an image signal (I), includes a plurality of multipliers (Mi), summing circuitry (Ai) coupled to outputs of the multipliers (Mi), and a plurality of delay cells (Di) arranged for repeatedly supplying identical values to corresponding ones of the multipliers (Mi) during a number of times corresponding to an expansion ratio by which the discrete representation (I) is to be expanded, or for, in cooperation with the summing circuitry (Ai, Ai'), accumulating output values from the multipliers (Mi) during a number of times corresponding to a compression ratio by which the discrete representation (I) is to be compressed.

REFERENCES:
patent: 5023825 (1991-06-01), Luthra et al.
patent: 5182633 (1993-01-01), Antonio et al.
patent: 5351087 (1994-09-01), Christopher et al.
patent: 5808924 (1998-09-01), White

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