KR930011547A - DTMF Signal Generator Using Memory - Google Patents
DTMF Signal Generator Using Memory Download PDFInfo
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- KR930011547A KR930011547A KR1019910021277A KR910021277A KR930011547A KR 930011547 A KR930011547 A KR 930011547A KR 1019910021277 A KR1019910021277 A KR 1019910021277A KR 910021277 A KR910021277 A KR 910021277A KR 930011547 A KR930011547 A KR 930011547A
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- address
- signal
- memory
- channel
- digital code
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Abstract
교환기에서 DTMF신호를 발생할 시 메모리를 이용하여 DTMF신호를 발생하고, 이 DTMF신호를 하이웨이상에 출력한다. 이를 위하여 메모리에는 DTMF신호에 각각 대응하는 디지탈 코드 데이타를 특정 어드레스 위치에 저장시키며, 수신되는 어드레스에 의해 해당위치의 디지탈 코드 데이타를 출력한다. 그리고 어드레스 발생부는 제어부로부터 채널 어드레스를 수신하며, 해당 채널 어드레스 발생부는 제어부로부터 채널 어드레스를 수신하며, 해당 채널 어드레스에 대응하는 디지탈 코드 데이타를 순차적으로 억세스하기 위한 어드레스 신호를 발생하여 상기 메모리로 출력한다. 이후 인터페이스부는 상기 메모리의 출력 디지탈 코드 데이타를 병렬 로드하여 지정되는 각각의 채널위치에서 로드한 디지탈 코드데이타를 직렬 변환하여 하이웨이상으로 출력한다.When the exchange generates the DTMF signal, the memory is used to generate the DTMF signal, and the DTMF signal is output on the highway. To this end, the memory stores the digital code data corresponding to the DTMF signals at specific address positions, and outputs the digital code data of the corresponding positions according to the received addresses. The address generator receives a channel address from the controller, and the channel address generator receives a channel address from the controller, and generates and outputs an address signal for sequentially accessing digital code data corresponding to the channel address. . Thereafter, the interface unit serially loads the output digital code data of the memory and serially converts the digital code data loaded at each designated channel position and outputs it on the highway.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명에 따른 DTMF발생기의 블럭구성도.3 is a block diagram of a DTMF generator according to the present invention.
제4도는 제3도의 구체적 실시예도.4 is a specific embodiment of FIG.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910021277A KR930011547A (en) | 1991-11-26 | 1991-11-26 | DTMF Signal Generator Using Memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910021277A KR930011547A (en) | 1991-11-26 | 1991-11-26 | DTMF Signal Generator Using Memory |
Publications (1)
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KR930011547A true KR930011547A (en) | 1993-06-24 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019910021277A KR930011547A (en) | 1991-11-26 | 1991-11-26 | DTMF Signal Generator Using Memory |
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KR (1) | KR930011547A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100428675B1 (en) * | 1999-11-24 | 2004-04-30 | 엘지전자 주식회사 | Apparatus for transmitting tone by using frequency processing option in electronic switch board |
KR100459313B1 (en) * | 1997-07-31 | 2005-01-17 | 홍성용 | Electromagnetic wave absorber composition comprising fe2o3, nio, zno, cuo, water, dispersant, plasticizer and lubricant, its preparation method, paint composition for absorbing electromagnetic wave containing the composition, its preparation method, its coating method, and device using the paint composition |
KR100449884B1 (en) * | 1997-12-29 | 2005-03-08 | 주식회사 팬택앤큐리텔 | Exchange interface device for a wireless local loop, especially with regards to configuring a pcm(pulse code modulated) dtmf memory, while supplying a pcm dtmf input signal |
KR100548737B1 (en) * | 2003-08-13 | 2006-02-02 | 주식회사 이엠에프 세이프티 | Manufacturing method of electromagnetic wave absorptive material composed of ferrite composite material |
US9109614B1 (en) | 2011-03-04 | 2015-08-18 | Lightsail Energy, Inc. | Compressed gas energy storage system |
US9243585B2 (en) | 2011-10-18 | 2016-01-26 | Lightsail Energy, Inc. | Compressed gas energy storage system |
-
1991
- 1991-11-26 KR KR1019910021277A patent/KR930011547A/en not_active Application Discontinuation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100459313B1 (en) * | 1997-07-31 | 2005-01-17 | 홍성용 | Electromagnetic wave absorber composition comprising fe2o3, nio, zno, cuo, water, dispersant, plasticizer and lubricant, its preparation method, paint composition for absorbing electromagnetic wave containing the composition, its preparation method, its coating method, and device using the paint composition |
KR100449884B1 (en) * | 1997-12-29 | 2005-03-08 | 주식회사 팬택앤큐리텔 | Exchange interface device for a wireless local loop, especially with regards to configuring a pcm(pulse code modulated) dtmf memory, while supplying a pcm dtmf input signal |
KR100428675B1 (en) * | 1999-11-24 | 2004-04-30 | 엘지전자 주식회사 | Apparatus for transmitting tone by using frequency processing option in electronic switch board |
KR100548737B1 (en) * | 2003-08-13 | 2006-02-02 | 주식회사 이엠에프 세이프티 | Manufacturing method of electromagnetic wave absorptive material composed of ferrite composite material |
US9109614B1 (en) | 2011-03-04 | 2015-08-18 | Lightsail Energy, Inc. | Compressed gas energy storage system |
US9243585B2 (en) | 2011-10-18 | 2016-01-26 | Lightsail Energy, Inc. | Compressed gas energy storage system |
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WITN | Withdrawal due to no request for examination |