KR910015150A - Calling tone detection circuit - Google Patents
Calling tone detection circuit Download PDFInfo
- Publication number
- KR910015150A KR910015150A KR1019900001090A KR900001090A KR910015150A KR 910015150 A KR910015150 A KR 910015150A KR 1019900001090 A KR1019900001090 A KR 1019900001090A KR 900001090 A KR900001090 A KR 900001090A KR 910015150 A KR910015150 A KR 910015150A
- Authority
- KR
- South Korea
- Prior art keywords
- detection circuit
- calling tone
- cpu
- tone detection
- output
- Prior art date
Links
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명의 블록도, 제2도는 본 발명의 상세 회로도, 제3도는 본 발명이 플로우 챠트.1 is a block diagram of the present invention, FIG. 2 is a detailed circuit diagram of the present invention, and FIG. 3 is a flowchart of the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900001090A KR910015150A (en) | 1990-01-31 | 1990-01-31 | Calling tone detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900001090A KR910015150A (en) | 1990-01-31 | 1990-01-31 | Calling tone detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR910015150A true KR910015150A (en) | 1991-08-31 |
Family
ID=67468433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900001090A KR910015150A (en) | 1990-01-31 | 1990-01-31 | Calling tone detection circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR910015150A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101157770B1 (en) * | 2010-12-31 | 2012-06-25 | (주)엠에스하모니 | Vibrator |
-
1990
- 1990-01-31 KR KR1019900001090A patent/KR910015150A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101157770B1 (en) * | 2010-12-31 | 2012-06-25 | (주)엠에스하모니 | Vibrator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |