发明名称 |
Integrated circuit for generating a melody and ring |
摘要 |
An integrated circuit for generating a melody and ring comprises a starting voltage detector a frequency discriminator a controller a ring/melody data ROM an oscillator/frequency doubler a frequency divider a tempo/rhythm generator a chord generator an original-melody generator and an envelope output part. A ring circuit and melody circuit are formed together in one chip, thereby can reduce the prime cost of the telephone by generating selectively a ring signal in a ring mode or a melody signal in a melody mode.
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申请公布号 |
US5099513(A) |
申请公布日期 |
1992.03.24 |
申请号 |
US19900484423 |
申请日期 |
1990.02.23 |
申请人 |
SAMSUNG ELECTRONICS CO. LTD. |
发明人 |
KIM, YONG-HOON;CHANG, KYE-EON |
分类号 |
A23C11/10;A23J1/14;A23L1/20;G10H1/00;G11C27/00;H04M1/00;H04M19/04 |
主分类号 |
A23C11/10 |
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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