Digit data sampling rate conversion system

Application Number: 00102638
Application Date: 2000.02.24
Publication Number: 1271210
Publication Date: 2000.10.25
Priority Information: 1999/10/12 US 09/415,654; 1999/10/12 US 09/415,655; 1999/2/24 US 60/121,198
International: H03H17/02;H04L27/20
Applicant(s) Name: Thomson Licensing Corp.
Inventor(s) Name: David L. Mikenily
Patent Agency Code: 11105
Patent Agent: lu xiaozhang
Abstract A sample rate conversion system converts data of a first sample rate to data of a different second sample rate. The system involves an interpolator, operating at the first sample rate and includes a first interpolation network and a delay network. The first interpolation network interpolates the first sample rate data to provide upsampled interpolated data samples according to a first sample spacing. The delay network interpolates the upsampled interpolated data to provide delayed upsampled interpolated data samples, according to a second sample spacing of higher resolution than the first sample spacing, and preceding and succeeding an original sample position. The system also includes a digital filter operating at the second sample rate for filtering the higher resolution data samples to provide the second sample rate data.