Interpolation circuit with high resolution and high response speed

Weiying Piao; Yibao Yuan; Lianhu Xu; Hao Zhang

doi:10.1117/12.828605

20 May 2009 Interpolation circuit with high resolution and high response speed

Weiying Piao, Yibao Yuan, Lianhu Xu, Hao Zhang

Proceedings Volume 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 72830M (2009) https://doi.org/10.1117/12.828605
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

An interpolation circuit based upon the looking-up table by hardware is presented. Output data of two A/D convertors are connected to ROM's address bus. The memory space of ROM is divided. When the address bus is activated by A/D conversion's output data, the ROM's output data is interpolation data. This circuit has high response speed, and it is easy to obtain high interpolation multiple. The same kind of hardware circuit can achieve different interpolation multiple by modifying ROM's data. It is very convenient and flexible. The principle of direction judgment and counting is analyzed; the implementation speed and maximal interpolation multiple are discussed in this paper. Finally through experiment, make sure this circuit not only has the characteristic of high response speed and high interpolation multiple, but also avoids the counting error of micro-computer interpolation.

Citation Download Citation

Weiying Piao, Yibao Yuan, Lianhu Xu, and Hao Zhang "Interpolation circuit with high resolution and high response speed", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72830M (20 May 2009); https://doi.org/10.1117/12.828605

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