JPH0270558U - - Google Patents
Info
- Publication number
- JPH0270558U JPH0270558U JP14842588U JP14842588U JPH0270558U JP H0270558 U JPH0270558 U JP H0270558U JP 14842588 U JP14842588 U JP 14842588U JP 14842588 U JP14842588 U JP 14842588U JP H0270558 U JPH0270558 U JP H0270558U
- Authority
- JP
- Japan
- Prior art keywords
- call
- detection circuit
- signal
- end signal
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 2
Description
第1図はこの考案の一実施例の構成を示すブロ
ツク図。第2図は従来例の構成を示すブロツク図
。
1……スピーチネツトワーク、2および4……
終話信号検出回路、3……磁気テープ再生装置、
5……排他論理和回路。
FIG. 1 is a block diagram showing the configuration of an embodiment of this invention. FIG. 2 is a block diagram showing the configuration of a conventional example. 1...Speech Network, 2 and 4...
end-of-call signal detection circuit, 3...magnetic tape playback device,
5...Exclusive OR circuit.
Claims (1)
留守番電話装置の終話検出回路であつて、留守番
電話装置の再生装置からの再生出力を入力として
終話信号を検出する第1の終話信号検出回路と、
回線からの終話信号を検出する第2の終話信号検
出回路と、第1の終話信号検出回路の検出出力と
第2の終話信号検出回路の検出出力とを排他論理
和演算する論理演算手段とを備え、論理演算手段
の出力を終話検出信号とすることを特徴とする終
話検出回路。 A call-end detection circuit for an answering machine that detects a call-end signal from a line and identifies the call-end; a speech signal detection circuit;
A second call-end signal detection circuit that detects a call-end signal from the line, and logic that performs an exclusive OR operation on the detection output of the first call-end signal detection circuit and the detection output of the second call-end signal detection circuit. 1. A call end detection circuit comprising: arithmetic means, and uses an output of the logic arithmetic means as a call end detection signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14842588U JPH0270558U (en) | 1988-11-16 | 1988-11-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14842588U JPH0270558U (en) | 1988-11-16 | 1988-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0270558U true JPH0270558U (en) | 1990-05-29 |
Family
ID=31419741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14842588U Pending JPH0270558U (en) | 1988-11-16 | 1988-11-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0270558U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5275104A (en) * | 1975-12-18 | 1977-06-23 | Matsushita Electric Ind Co Ltd | Automatic answering telephone set |
JPS5842347A (en) * | 1981-09-05 | 1983-03-11 | Hashimoto Corp | Automatic answering telephone set with remote message listening without malfunction |
-
1988
- 1988-11-16 JP JP14842588U patent/JPH0270558U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5275104A (en) * | 1975-12-18 | 1977-06-23 | Matsushita Electric Ind Co Ltd | Automatic answering telephone set |
JPS5842347A (en) * | 1981-09-05 | 1983-03-11 | Hashimoto Corp | Automatic answering telephone set with remote message listening without malfunction |
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