发明名称 |
INTERFACE SYSTEM BETWEEN MICROPROCESSOR HARDWARE AND TWO-WIRE TELEPHONE-LINE ANALOG SUBSCRIBERS (ALTERNATIVES) AND INTERFACE MODULE FOR THESE SYSTEMS |
摘要 |
computer and communications engineering; multichannel boards built in computer for its interfacing with several telephone lines. SUBSTANCE: one of system alternatives has at least two modules, analog-to-digital converter whose input is coupled with multiplexer output, peripheral computer whose input is coupled with analog-to-digital converter output and whose output is connected through interface to peripheral devices. Each module incorporates differential amplifier built around operational amplifier and resistors. EFFECT: improved performance characteristics due to easy connection of new lines. 11 cl, 7 dwg
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申请公布号 |
RU2164058(C1) |
申请公布日期 |
2001.03.10 |
申请号 |
RU19990121247 |
申请日期 |
1999.10.12 |
申请人 |
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "KB;ANISIMOV JURIJ LEONIDOVICH;ANISIMOV JURIJ LEONIDOVICH |
发明人 |
ANISIMOV JU.L. |
分类号 |
H04M11/00;(IPC1-7):H04M11/00 |
主分类号 |
H04M11/00 |
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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