发明名称 |
Adder circuit for encoded PCM samples |
摘要 |
A circuit adds and subtracts pulse code modulation (PCM) samples in D2 format. An exponent subtractor determines the difference between exponents of the two PCM samples. A mantissa shifter circuit shifts the mantissa portion of a selected PCM sample to compensate for the difference in the exponents. A mantissa adder circuit adds or subtracts the mantissa portion of the shifted and unshifted PCM samples and a sign generator provides a sign value representative of the resultant added or subtracted PCM samples. A normalizer circuit ensures that the mantissa has a predetermined range of values.
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申请公布号 |
US4698771(A) |
申请公布日期 |
1987.10.06 |
申请号 |
US19840687877 |
申请日期 |
1984.12.31 |
申请人 |
GTE COMMUNICATION SYSTEMS CORPORATION |
发明人 |
MILLS, JEFFREY P.;MACRANDER, MAX S. |
分类号 |
G06F7/485;G06F7/50;(IPC1-7):G06F7/50;G06F7/38 |
主分类号 |
G06F7/485 |
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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