[특허]Wide area cordless telephone system capable of receiving incoming group address calls

Wide area cordless telephone system capable of receiving incoming group address calls 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04M-011/00
출원번호	US-0652724 (1991-02-08)
우선권정보	JP-0030104 (1990-02-08)
발명자 / 주소	Hashimoto Tadao (Tokyo JPX) Tanaka Kazushige (Kanagawa JPX)
출원인 / 주소	NEC Corporation (Tokyo JPX 03) Nippon Telegraph and Telephone Corp. (Tokyo JPX 03)
인용정보	피인용 횟수 : 23 인용 특허 : 0

초록 ▼

In a wide area cordless telephone system, an individual-call signal is generated if an incoming call from the telephone network is an individual call to one of cordless stations of a group and a group-call signal is generated if it is directed to all cordless stations of the group. A group of access units are associated with the cordless station of each group to establish a control channel and speech channels with the cordless stations. The access units respond to the individual-call signal by transmitting a speech channel identifier to one of the cordless stations through the control channel and transmitting a ringing signal through a speech channel specified by the speech-channel identifier. In response to the group-call signal, speech-channel identifiers are successively transmitted from the access units to the cordless stations through the control channel and group ringing signals are respectively sent to the cordless stations through speech channels specified by the speech-channel identifiers. In a modified embodiment, the cordless stations receive pairing identifiers each containing a pair of an access unit identifier and a cordless station identifier and transmit a response containing one pairing identifier that specifies the own station. The access units also receive pairing identifiers from the controller for detecting a match with those received from the cordless stations. If a match is detected by each access unit, it is entitled to send a speech-channel identifier to the cordless station which is specified by the matched identifiers.

대표청구항 ▼

A wide area cordless telephone system for covering a plurality of service areas in each of which a plurality of cordless stations are located, comprising: control means connected to a telephone network for generating a group-call signal in response to an incoming call from the telephone network; and a plurality of access units divided into groups corresponding respectively to a respective service area, the access units of each group for establishing a radio control channel with the cordless stations located in the same service area as said access units, said access units of each group being responsive to said group-call signal for transmitting speech-channel identifiers to said cordless stations through said control channel to establish radio speech channels with the cordless stations located in the same service area as said access units receiving said group call signal, and transmitting ringing signals respectively to said cordless stations through said speech channels.

이 특허를 인용한 특허 (23)

Dunne,Frank; Forde,Brian J.; Weinmann,Paul C.; Smaak,Marc, Broadcast facility.
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Bhatia Ranjit, Broadcasting messages to mobile stations within a geographic area.
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Sugitani, Toshiyuki, Calling apparatus and calling method in a telephone.
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Kay Stanley E. (Rockville MD) Kaul Pradeep (Darnestown MD) Parr Michael I. (San Diego CA) Avis Graham (San Diego CA) Corrigan ; III John E. (Chevy Chase MD) Wendling Daniel (Darnestown MD) Mehta Asho, Combined fixed and mobile radio communication system and method.
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Davidson Steven Frederic ; Maglaya Daniel Gerard ; Sofia Donald A. ; Collar Stuart John ; Stone Jeffrey Jay, Communications interface adapter.
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Steven Frederic Davidson ; Daniel Gerard Maglaya ; Donald A. Sofia ; Stuart John Collar ; Jeffrey Jay Stone, Communications interface adapter.
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Rolf Biedermann DE; Josef Baumeister DE, Cordless telecommunications system.
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Forde, Brian J.; Weinmann, Paul C.; Dunne, Frank, Multiple broadcast facility.
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Diachina John, Operation and administration of mobile station user groups in wireless communications systems.
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Jacklin William Edward, Personal communications system.
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Davidson Steven Frederic ; Vollendorf Kim David ; DiCicco Michael Frank ; Collar Stuart John ; Stone Jeffrey Jay, Personal communications unit.
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Davidson Steven F. ; Vollendorf Kim D. ; DiCicco Michael F. ; Brown David C. ; Gielow Christopher C. ; Cottingham David J., Personal communications unit docking station.
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Davidson Steven F. ; Vollendorf Kim D. ; DiCicco Michael F. ; Brown David C. ; Gielow Christopher C. ; Cottingham David J., Personal communications unit handset.
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Huang, Jiong; Ming, Lei; Kim, Gyudong; Kim, Young Il, Phase relationship control for control channel of a multimedia communication link.
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Huang, Jiong; Ming, Lei; Kim, Gyudong; Kim, Young Il, Retry disparity for control channel of a multimedia communication link.
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Jonsson Bjorn,SEX, System and method for providing telephone service to each member of a group of radio telephone subscribers.
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Schlosser Knut Haberland,DEX ; Grove Anders,DKX ; Bergmann Lars,DKX, System for transferring information from a base station to portable phones.
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Chapman, Jr.,Robert Ellis; Stern,Edith Helen; Willner,Barry E., Telephone network node device.
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Stobba Laura Lynn ; Jacklin William Edward, Voice operated switch for use in high noise environments.
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Hachimura Futoshi,JPX ; Yatsu Hiroyuki,JPX, Wireless communication apparatus and system.
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Hachimura,Futoshi; Yatsu,Hiroyuki, Wireless communication apparatus and system.
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Jacklin William Edward ; Stratmoen Scott Alan, Wireless communications protocol.
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Jacklin William Edward ; Stratmoen Scott Alan, Wireless communications protocol.
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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
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Wide area cordless telephone system capable of receiving incoming group address calls 원문보기

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Wide area cordless telephone system capable of receiving incoming group address calls 원문보기

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