发明名称 |
Integrated circuit that performs multiple communication tasks |
摘要 |
An integrated circuit that provides multiple communication functions is accomplished by providing an integrated circuit (24) that includes memory (70) which stores an audio code algorithm, echo cancellation information, a modem processing algorithm, and audio data. The memory (70) is coupled via a data bus (50) to a signal converter (56), a central processing unit (58), and a first co-processor (72). The signal converter (56) provides an analog-to-digital input port (78) and a digital-to-analog output port (80) for the integrated circuit (24), wherein the audio data is received via the analog-to-digital input port (78). The central processing unit (58) executes at least a first portion of the audio coding algorithm upon the audio data and executes a first portion of the modem processing algorithm, while the first co-processor (72) executes an echo cancellation algorithm.
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申请公布号 |
US5621800(A) |
申请公布日期 |
1997.04.15 |
申请号 |
US19940333152 |
申请日期 |
1994.11.01 |
申请人 |
MOTOROLA, INC. |
发明人 |
WENG, CHIA-SHIANN;KUENAST, WALTER U.;ASTRACHAN, PAUL M.;ANDERSON, DONALD C.;CURTIS, PETER C.;CORLETO, JOSE G. |
分类号 |
H03H21/00;H03H17/02;H03M7/30;H04B1/00;H04B1/40;H04B3/23;H04M9/08;(IPC1-7):H04L9/00 |
主分类号 |
H03H21/00 |
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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