发明名称 |
Abtastfrequenzumsetzer zum Umsetzen einer niedrigen Abtastfrequenz in eine höhere Abtastfrequenz und Verfahren dafür |
摘要 |
A converter converts time-sequential input digital data Qi having a sampling frequency fm to time-sequential digital data Pj having a sampling frequency fn (fn:fm = n:m, n>m, n, m; an integer), which comprises a time axis compressing converter 6 receiving the time-sequential input digital data Qi, adding (n-m) dummy data DK every m received input data Qi and outputting the combined data at the frequency fn and a single transversal type digital filter 12 for performing filter processing on output data from the time-axis compressing converter 6 in which tap coefficient data beta k is switched at the cycle of 1/fn. The tap coefficient data is selected to nullify dummy data DK which periodically appears, based on impulse response data obtained by sampling a sampling function for the sampling frequency fm with a frequency of the least common multiple of the sampling frequencies fn and fm. |
申请公布号 |
DE3855437(D1) |
申请公布日期 |
1996.08.29 |
申请号 |
DE19883855437 |
申请日期 |
1988.08.23 |
申请人 |
SANYO ELECTRIC CO., LTD., MORIGUCHI, OSAKA, JP |
发明人 |
ITO, NOBUO, NAZUKA-CHO INAZAWA-SHI AICHI-KEN, JP |
分类号 |
H04N5/92;H03H15/00;H03H17/00;H03H17/06 |
主分类号 |
H04N5/92 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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