Title:
SAMPLING RATE CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/030384
Kind Code:
A1
Abstract:
According to the present invention, a positional coordinate difference calculator (5) calculates the positional coordinate difference between the positional coordinates of an output digital signal and the positional coordinates of an input digital signal proximal thereto. An FIR coefficient memory (9) stores the FIR coefficient of an FIR-LPF having the property of blocking frequency components of at least half the output sampling rate. When the positional coordinate difference is inputted, the FIR coefficient memory (9) outputs an FIR coefficient corresponding to the positional coordinate difference between the output digital signal and a set number of input digital signals present in the vicinity of the positional coordinates of the output digital signal. A parallel FIR computing unit (3) performs an FIR-LPF interpolation computation using the set number of input digital signals and the FIR coefficient, and thereby calculates the output digital signal.
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Inventors:
YAMADA YASUHIRO (JP)
KOIKE YUICHIRO (JP)
KOIKE YUICHIRO (JP)
Application Number:
PCT/JP2013/060606
Publication Date:
February 27, 2014
Filing Date:
April 08, 2013
Export Citation:
Assignee:
NTT ELECTRONICS CORP (JP)
YAMADA YASUHIRO (JP)
KOIKE YUICHIRO (JP)
YAMADA YASUHIRO (JP)
KOIKE YUICHIRO (JP)
International Classes:
H03H17/00
Foreign References:
| JPH0472905A | 1992-03-06 | |||
| JPH0865105A | 1996-03-08 | |||
| JPH0884048A | 1996-03-26 |
Other References:
See also references of EP 2890008A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
Takada 守 (JP)
Takada 守 (JP)
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