(19)
(11) EP 0 967 682 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.08.2000 Bulletin 2000/33

(43) Date of publication A2:
29.12.1999 Bulletin 1999/52

(21) Application number: 99304288.6

(22) Date of filing: 02.06.1999
(51) International Patent Classification (IPC)7: H01Q 13/20, H04B 5/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 10.06.1998 JP 16188098

(71) Applicant: PUBLIC WORKS RESEARCH INSTITUTE, MINISTRY OF CONSTRUCTION
Tsukuba-shi, Ibaraki-ken 305-0804 (JP)

(72) Inventor:
  • Kaneta, Masahisa, c/o Optoelectronic Syst. Lab.
    Hitachi-shi, Ibaraki-ken 319-1414 (JP)

(74) Representative: Tothill, John Paul 
Frank B. Dehn & Co. 179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB)

   


(54) Leaky cable feeding system


(57) The present invention provides a communication system for transacting information with moving bodies by using a leaky cable (1) as an aerial cable. In this communication system, communication units (2) are provided at both ends of the leaky cable (1) for feeding power from both ends of the leaky cable so that a communication disabled area (21) never occurs and the reliability as a communication system is very high.






Search report