KR970078247A - Two way speaker phone - Google Patents
Two way speaker phone Download PDFInfo
- Publication number
- KR970078247A KR970078247A KR1019960018021A KR19960018021A KR970078247A KR 970078247 A KR970078247 A KR 970078247A KR 1019960018021 A KR1019960018021 A KR 1019960018021A KR 19960018021 A KR19960018021 A KR 19960018021A KR 970078247 A KR970078247 A KR 970078247A
- Authority
- KR
- South Korea
- Prior art keywords
- frequency
- unit
- line
- signal
- signal input
- Prior art date
Links
Abstract
본 발명은 국선부와 마이크부를 통해 들어오는 두 신호의 주파수를 비교하여 같으면 마이크부에서 입력된 신호를 차단하고, 다르면 통과시키는 주파수 변별부를 통해 양방향 통화를 구현함은 물론 통화 음질을 향상시킨 양방향 스피커 폰 통화장치에 관한 것으로, 스피커부 및 마이크부와, 국선부를 통해 입력되는 상대방 음성신호의 주파수를 변별한 후 그 신호와 상기 마이크로부로부터 입력되는 신호를 비교하여 두 신호가 주파수가 같으면 차단하고 서로 다르면 마이크에서 입력된 신호를 국선부로 출력하는 주파수 변별부로 구성된다. 이때, 상기 주파수 변별부는 국선과 연결된 제1라인부(Line Rx)와, 그 제1라인부(Line Rx)를 통해 입력된 후 스피커로 출력되는 신호를 인가받아 그 신호의 주파수를 변별하는 주파수 변별기와, 그 주파수 변별기에서 출력되는 신호의 주파수와 마이크부에서 입력되는 신호의 주파수를 비교하여 두 신호의 주파수가 같으면 상기 마이크에서 입력되는 신호를 차단하고, 두 신호의 주파수가 다르면 상기 마이크에서 입력되는 신호를 통과시키는 주파수 비교기와, 상기 주파수 비교기에서 출력되는 신호를 국선으로 전달하는 제2라인부(Line Tx)로 구성된다.The present invention compares the frequency of the two signals coming through the trunk line and the microphone unit, if the same, cut off the signal input from the microphone unit, if different, implement a two-way call through the frequency discriminator to pass the two-way speaker phone to improve the call sound quality The call apparatus, which discriminates the frequency of the speaker unit and the microphone unit and the other party's voice signal input through the trunk line unit, compares the signal and the signal input from the micro unit, and blocks if the two signals have the same frequency, It is composed of a frequency discriminator that outputs the signal input from the microphone to the trunk line part. In this case, the frequency discriminating unit receives a signal input through the first line unit Line Rx connected to the trunk line and the first line unit Line Rx and then outputs to the speaker to discriminate the frequency of the signal. And compares the frequency of the signal output from the frequency discriminator with the frequency of the signal input from the microphone unit. And a frequency comparator for passing the signal, and a second line part (Tx) for transmitting the signal output from the frequency comparator to 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 양방향 스피커 폰 통화장치의 구성도, 제3도는 상기 제2도에 도시된 양방향 스피커 폰 통화장치의 동작흐름도.2 is a configuration diagram of a two-way speaker phone call device according to the present invention, Figure 3 is a flow chart of the operation of the two-way speaker phone call device shown in FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018021A KR970078247A (en) | 1996-05-27 | 1996-05-27 | Two way speaker phone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018021A KR970078247A (en) | 1996-05-27 | 1996-05-27 | Two way speaker phone |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970078247A true KR970078247A (en) | 1997-12-12 |
Family
ID=66283837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960018021A KR970078247A (en) | 1996-05-27 | 1996-05-27 | Two way speaker phone |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970078247A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100703515B1 (en) * | 2001-02-28 | 2007-04-03 | 삼성전자주식회사 | Full duplex speakerphone with half duplex speakerphone codec |
-
1996
- 1996-05-27 KR KR1019960018021A patent/KR970078247A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100703515B1 (en) * | 2001-02-28 | 2007-04-03 | 삼성전자주식회사 | Full duplex speakerphone with half duplex speakerphone codec |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR970078247A (en) | Two way speaker phone | |
KR970056594A (en) | Handfree Hearing Aid Phone | |
KR910015131A (en) | A cordless phone device | |
KR960043665A (en) | Combined call device and method for cellular phone | |
KR920020873A (en) | Training method of voice communication device and acoustic echo canceller | |
KR950007350A (en) | How to express a specific call ring voice in a keyphone system | |
JPS63166346A (en) | Multi-frequency comparison type hand-free circuit | |
JPH033021Y2 (en) | ||
KR970031731A (en) | Modem / telephone / facsimile detection device and detection method | |
KR940007686B1 (en) | Multiple sound input treating appartus | |
KR900005737A (en) | Voice Service Pass Control Using Analog Multiplexer | |
KR970008989A (en) | Portable Cordless Phone with Remote Control | |
JPS6290072A (en) | Electronic key telephone system with speech synthesizing and calling functions | |
KR970004527A (en) | Automatic trunk line connection device using speakerphone | |
KR940017501A (en) | Unique sound generator of multiple wireless phones | |
KR980007416A (en) | Video phone with the features of a standard telephone | |
KR960043701A (en) | Three-way simultaneous calling device of cell phone and its method | |
RU93051072A (en) | CONFERENCE-COMMUNICATION DEVICE CONTROLLED BY VOICE | |
KR970009061A (en) | Speaker phone and his call method | |
KR900001192A (en) | Receiver monitoring device for telephone | |
KR940027376A (en) | Handset of Mobile Wireless Telephones for Vehicles | |
KR950022286A (en) | Howling prevention device for mobile wireless telephone | |
KR970031723A (en) | Two-way conference call circuit of key phone | |
KR970019296A (en) | Handset prevention device of telephone | |
KR910021086A (en) | Transmission network simulation circuit of voice quality evaluation system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
N231 | Notification of change of applicant | ||
E601 | Decision to refuse application |