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Multiplexer-related

Direct-digital-to-digital-sampling-rate-conversion-method-and-apparatus

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Direct digital to digital sampling rate conversion, method and apparatus

Details

Inventors: Busby, Bruce;
Assignee: Sony Corporation (Tokyo, JP)
Primary Examiner: Sloyan; T. J.
Assistant Examiner:
Attorney, Agent or Firm: Limbach, Limbach & Sutton

A direct digital-to-digital rate conversion apparatus and method for converting an input signal at a first sampling rate to an output signal at a second sampling rate, said apparatus has a rate multiplier means to increase the frequency of the input signal. The multiplied signals from the rate multiplied means are interpolated using a nth order n-polynomial interpolator to produce the output signal.

DETAILED DESCRIPTION Therefore, in accordance with the present invention, direct digital to digital sampling rate conversion for converting input digital signals at a first sampling rate to output digital signals at a second sampling rate, is accomplished by an apparatus which has a rate multiplication means into which the input digital signals are entered.
A multiplied signal having a rate increased from the rate of the input signal is produced from the rate multiplication means.
An interpolating means receives the multiplied signals from the rate multiplication means and interpolates the multiplied signals to produce the output signal.
A timing signal generating means produces timing signals that regulate the generation of the multiplied signal and the output signal.

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