Interpolation circuit

Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting

Reexamination Certificate

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Reexamination Certificate

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06894966

ABSTRACT:
An interpolation circuit capable of performing interpolation operation with a simple constitution. A 16-times oversampling from discrete data is performed by D frip-frops4, 5. A first convolution operation is performed by D frip-frops4through11and an adder12, on the result of which a second convolution operation is performed by D frip-frops13through20and an adder21. Data interpolated along a quadratic function curve interpolating the discrete data is obtained from the adder21.

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patent: 5-282354 (1993-10-01), None
patent: 8-330957 (1996-12-01), None
Qi Wang et al, “Circuit Design of A D/A Converter Using Spline Functions”, Signal Processing, Mar., 1989, vol. 16, No. 3, pp. 279-288.
Akira Sakurai, Spline Kansu Nyumon, Tokyo: Tokyo Denki Daigaku Shuppan kyoku, 1986, p. 61, line 3, p. 103, line 1.
Spline Functions and Applications, ©Akira Sakurai 1981.

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