Title:
アップおよびダウン・サンプル・レート・コンバータ
Document Type and Number:
Japanese Patent JP2006523996
Kind Code:
A
Abstract:
Sample rate converters ( 12 ) for converting input sample rates (F81) of signals into output sample rates (Fs4) are provided with sample rate adapters ( 3,6 ) for adapting (basic idea) intermediate sample rates (Fs 2 ) such that output sample rates (Fs 4 ) are larger (upsampling) or smaller (downsampling) than input sample rates (F81), to reduce their complexity and to avoid bookkeeping and structure switching problems. Sample rate adapters ( 3,6 ) in the form of variable sample rate decreasers ( 3 ) allow the sample rate converters ( 12 ) to be used in video applications requiring DC-out being equal to DC-in. Sample rate adapters ( 3,6 ) in the form of variable sample rate increasers ( 6 ) allow the sample rate converters ( 12 ) to be used in audio applications. By locating the sample rate adapter ( 3,6 ) between a fixed sample rate increaser ( 1 ) for increasing with a factor K and a fixed sample rate decreaser ( 5 ) for decreasing with a factor M, filters ( 2,4 ) in between can be designed independently from the varying factor L as long as K and M are fixed and L<-K.
Inventors:
Adrinus, Wilhelms, Maria, Juan, Den, Enden
Marc, Victor, Allenz
Marc, Victor, Allenz
Application Number:
JP2006506762A
Publication Date:
October 19, 2006
Filing Date:
March 24, 2004
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04B14/04; H03H17/00; H03H17/02; H03H17/06
Domestic Patent References:
| JP2002543651A | 2002-12-17 |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki