Telecommunications – Receiver or analog modulated signal frequency converter – Combined with diverse art device
Patent
1989-05-22
1992-10-27
Chin, Stephen
Telecommunications
Receiver or analog modulated signal frequency converter
Combined with diverse art device
455351, 34082544, H04B 106
Patent
active
051597136
ABSTRACT:
A wide area paging system is disclosed in which paging messages input to the system in one local area can be broadcast to a receiver in any other local area without necessarily broadcasting the message in all areas. A local area clearinghouse in each area stores resident subscriber data including current location and receiver serial number. This data is used to transfer messages over a data network to the correct clearing-house. The system uses a TDM data protocol. The data is encoded and transmitted at a very high rate (e.g., 19,000 baud) in short packets (256 bits/13 milliseconds) via stereo FM sidebands. Receivers are assigned to receive sequentially numbered time slots matching a portion of their address. The addresses of intended receivers are included in the data packets. Battery-powered receivers are deactivated between packets and reactivated in accordance with the sequential time slot number scheme to receive an incoming packet. Messages longer than a packet are segmented and transmitted in two or more packets, linked together by data contained in the packets. A watch pager used in the system employs a wristband antenna which electromagnetically couples to the user's body. The watch pager displays time, telephone numbers and icons representing common types of paging messages.
REFERENCES:
patent: D210462 (1968-03-01), Roberts et al.
patent: 3032651 (1962-05-01), Gisiger-Stahl et al.
patent: 3834153 (1974-09-01), Yoda et al.
patent: 3937004 (1976-02-01), Natori et al.
patent: 3983483 (1976-09-01), Pando
patent: 4131855 (1978-12-01), Hamagawa
patent: 4225965 (1980-09-01), Baugh
patent: 4315332 (1982-02-01), Sakami et al.
patent: 4430757 (1984-02-01), Szakvary
patent: 4480253 (1984-10-01), Anderson
patent: 4569598 (1986-02-01), Jacobs
patent: 4663624 (1987-05-01), Bui et al.
patent: 4736196 (1988-04-01), McMahon et al.
Barnum Lewis W.
Gaskill Garold B.
Hoff Don G.
Park Daniel J.
Rose Donald T.
Chin Stephen
Galbi Elmer
Seiko Corp.
Seiko Epson Corp.
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