[특허]Portable telecommunications test instrument with line condition monitoring

Portable telecommunications test instrument with line condition monitoring 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04M-003/30 H04M-003/26
출원번호	US-0771269 (1991-10-04)
발명자 / 주소	Garthwaite John H. (Coupeville WA) Stocklin Clay A. (Redmond WA) Rollins David M. (Monroe WA)
출원인 / 주소	Leviton Manufacturing Co., Inc. (Little Neck NY 02)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A handheld battery-powered telecommunications test instrument for monitoring the status of a pair of wires. A tone-generating circuit generates a tone signal in response to the user manually selecting operation in a tone-generating mode. The instrument monitors the pair of wires to determine whether an on-hook, off-hook or ringing signal is present on the wires, and if present, generates an interrupt control signal through a microprocessor. Logic circuitry connected to the microprocessor results in connecting and disconnecting the tone-generating circuit and the pair of wires to selectively apply the tone signal to the wires. In response to the control signal and the user selecting the tone-generating mode, the microprocessor connects the tone-generation circuit to the pair of wires if no control signal is generated, and disconnects the tone-generating circuit if the control signal is generated. The presence of the on-hook, off-hook and ringing signals on the pair of wires is determined by measuring the voltage between the pair of wires. A menu is generated by the microprocessor from which the user can select the frequency and amplitude for the tone signal.

대표청구항 ▼

A portable self-powered telecommunications test instrument for monitoring the status of a pair of wires, the instrument comprising: a case sized to be held in one hand and containing therein the circuitry of the instrument; a tone generating circuit for generating a tone signal; a battery to provide power to said tone generating circuit; means for the user to manually enable operation of the instrument in a tone generating mode; means for monitoring the pair of wires to determine whether an on-hook signal, an off-hook signal, or a ringing signal is present on the pair of wires, and if either an on-hook, off-hook, or ringing signal is present on the pair of wires, generating a control signal; control means for connecting and disconnecting said tone generating circuit and the pair of wires to selectively apply said tone signal to the pair of wires; and means, responsive to said control signal and the user selecting said tone generating mode using said manual means, for causing said control means to connect said tone generating circuit to the pair of wires if the user selected said tone generating mode and no control signal is generated, and disconnecting said tone generating circuit from the pair of wires if the control signal is generated, whereby the operational mode of the instrument is changed automatically if the pair of wires are in use.

이 특허를 인용한 특허 (39)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Portable telecommunications test instrument with line condition monitoring 원문보기

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Portable telecommunications test instrument with line condition monitoring 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (39)

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