KR940003290A - Call termination processing circuit when power off the cordless phone handset - Google Patents
Call termination processing circuit when power off the cordless phone handset Download PDFInfo
- Publication number
- KR940003290A KR940003290A KR1019920013177A KR920013177A KR940003290A KR 940003290 A KR940003290 A KR 940003290A KR 1019920013177 A KR1019920013177 A KR 1019920013177A KR 920013177 A KR920013177 A KR 920013177A KR 940003290 A KR940003290 A KR 940003290A
- Authority
- KR
- South Korea
- Prior art keywords
- power
- call
- handset
- call termination
- turned
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
본 발명은 무선전화기 핸드셋의 전원차단시 통화종료처리회로에 관한 것으로, 특히 통화종료를 위해 핸드셋의 전원버튼을 오프시키더라도 핸드셋의 중앙처 리장치가 감지하여 통화종료처리를 할 수 있도록 한 무선전화기 핸드셋의 전원차단시 통화종료처리회로에 관한 것이다.The present invention relates to a call termination processing circuit when power is turned off of a handset of a wireless telephone, and in particular, a cordless telephone capable of detecting and ending a call by the central processing unit of the handset even when the power button of the handset is turned off to terminate the call. It relates to a call termination processing circuit when the handset is powered off.
본 발명은 사용자가 통화중에 핸드셋의 전원제어스위치를 오프시키게 되면, 이 전원제어스우치의 오프접속단과 직렬접속된 트랜지스터의 운동작에 따라 하이레 벨신호가 중앙처리장치에 입력되고, 그에 따라 상기 중앙 처리장치는 통화종료를 하기 위해 베이스장치에 통화종료 캐리어신호를 송신하여 상기 베이스장치가 국선의 포착을 해제할 수 있다.When the user turns off the power control switch of the handset during a call, a high level signal is input to the CPU according to the motion of the transistor connected in series with the off connection end of the power control switch. The central processing unit transmits a call termination carrier signal to the base unit to terminate the call so that the base unit can release the capture of the trunk line.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명에 따른 무선전화기 핸드셋의 전원차단시 통화종료 처리회로를 나타낸 회로도,2 is a circuit diagram showing a call termination processing circuit at power off of a wireless telephone handset according to the present invention;
제3도는 제2도에 도시된 통화종료처리회로의 전원스위치가 온접속된 상태의 타이밍도.3 is a timing diagram of a state where the power switch of the call termination processing circuit shown in FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013177A KR950007980B1 (en) | 1992-07-23 | 1992-07-23 | The source of electric power for a wireless phone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013177A KR950007980B1 (en) | 1992-07-23 | 1992-07-23 | The source of electric power for a wireless phone |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940003290A true KR940003290A (en) | 1994-02-21 |
KR950007980B1 KR950007980B1 (en) | 1995-07-21 |
Family
ID=19336855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920013177A KR950007980B1 (en) | 1992-07-23 | 1992-07-23 | The source of electric power for a wireless phone |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950007980B1 (en) |
-
1992
- 1992-07-23 KR KR1019920013177A patent/KR950007980B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950007980B1 (en) | 1995-07-21 |
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E701 | Decision to grant or registration of patent right | ||
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