DIGITAL FILTER HAVING IMPROVED ATTENUATION CHARACTERISTICS

Title:

DIGITAL FILTER HAVING IMPROVED ATTENUATION CHARACTERISTICS

Document Type and Number:

WIPO Patent Application WO/2011/105880

Kind Code:

A2

Abstract:

Disclosed is a digital filter having improved attenuation characteristics. The disclosed filter applies a sampling kernel which is scaled by a sampling constant to perform an upsampling process for a model filter response. The disclosed filter is advantageous in that it has a smaller number of taps and excellent attenuation characteristics, and is capable of changing the pass band of the filter by simply changing a parameter.

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Inventors:

NAM SANG-WON (KR)
KIM KYOUNG-JAE (KR)
JUNG SUNG-IL (KR)

Application Number:

PCT/KR2011/001408

Publication Date:

September 01, 2011

Filing Date:

February 28, 2011

Export Citation:

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Assignee:

IUCF HYU (KR)
NAM SANG-WON (KR)
KIM KYOUNG-JAE (KR)
JUNG SUNG-IL (KR)

International Classes:

H03H17/02

Foreign References:

JP2009094763A

2009-04-30

Other References:

J.Y.KIM ET AL.: 'Design of a new DFT filter bank with modified sampling kernels and its application to arbitrary image scaling' IEICE ELECTRONICS EXPRESS vol. 6, no. 2, January 2009, pages 58 - 64
J.Y.KIM ET AL.: 'Arbitrary scaling of images using an M-channel DFT filter bank with optimized adaptive interpolation kernels' IEICE ELECTRONICS EXPRESS vol. 4, no. 21, November 2007, pages 665 - 671

Attorney, Agent or Firm:

SONG, IN-HO (KR)
송인호 (KR)

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