KR860001649A - Loudspeaker Phone Device - Google Patents
Loudspeaker Phone Device Download PDFInfo
- Publication number
- KR860001649A KR860001649A KR1019840004189A KR840004189A KR860001649A KR 860001649 A KR860001649 A KR 860001649A KR 1019840004189 A KR1019840004189 A KR 1019840004189A KR 840004189 A KR840004189 A KR 840004189A KR 860001649 A KR860001649 A KR 860001649A
- Authority
- KR
- South Korea
- Prior art keywords
- telephone
- headset
- control unit
- signal
- switch
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims 5
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제3도는 본 발명에 의한 무선 전화기 장치의 제1의 실시예를 표시한 블록 다이어그램.3 is a block diagram showing a first embodiment of a radiotelephone device according to the present invention.
제5도는 제3도의 무선 전화기 장치에서 제어부에 대한 간략한 회로도.5 is a simplified circuit diagram of a control unit in the radiotelephone device of FIG.
제8도는 본 발명에 의한 무선 전화장치의 제2의 실시예를 나타내는 간략한 회로도.8 is a simplified circuit diagram showing a second embodiment of the radiotelephone apparatus according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
31 : 라우드 스피커 32 : 전화기 핸드셋31: loudspeaker 32: telephone handset
33 : 전화기 헤드셋 34, 35, 36 : 음성통로 스위치33: telephone headset 34, 35, 36: voice channel switch
37 : 소음 스위치 38 : 측음회로37: noise switch 38: side sound circuit
43 : 조작키 45 : 제어부43: operation key 45: control unit
44 : 훅크스위치 46 : 고주파신호제어부44: hook switch 46: high frequency signal control unit
459, 468 : 미분회로 460 : 지연회로459, 468: differential circuit 460: delay circuit
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019840004189A KR870000296B1 (en) | 1984-07-16 | 1984-07-16 | On-vehicle loudspeaker telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019840004189A KR870000296B1 (en) | 1984-07-16 | 1984-07-16 | On-vehicle loudspeaker telephone set |
Publications (2)
Publication Number | Publication Date |
---|---|
KR860001649A true KR860001649A (en) | 1986-03-20 |
KR870000296B1 KR870000296B1 (en) | 1987-02-25 |
Family
ID=19234623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019840004189A KR870000296B1 (en) | 1984-07-16 | 1984-07-16 | On-vehicle loudspeaker telephone set |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR870000296B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000069543A (en) * | 1996-12-19 | 2000-11-25 | 도날드 디. 먼둘 | Dual use speaker for both voice communication and signalling |
KR100331462B1 (en) * | 1999-12-30 | 2002-04-09 | 신승근 | MgO-C Refractory Brick Having High Resistance Against Heating Stress |
-
1984
- 1984-07-16 KR KR1019840004189A patent/KR870000296B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000069543A (en) * | 1996-12-19 | 2000-11-25 | 도날드 디. 먼둘 | Dual use speaker for both voice communication and signalling |
KR100331462B1 (en) * | 1999-12-30 | 2002-04-09 | 신승근 | MgO-C Refractory Brick Having High Resistance Against Heating Stress |
Also Published As
Publication number | Publication date |
---|---|
KR870000296B1 (en) | 1987-02-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 19971226 Year of fee payment: 12 |
|
LAPS | Lapse due to unpaid annual fee |