Title:
INFORMATION TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JP3234481
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an information transmission system capable of being added to a conventional system and transmitting other kinds of information without requiring a power system for transmission and at low cost.
SOLUTION: This transmission system is provided with an orbital circuit transmitting orbital current I including information, a current source 6 and plural ground devices 1 extracting preceding information from the orbital current I from a preceding orbital circuit Ci, generating the succeeding information based on the preceding information making the new current from the current source 6 contain the succeeding information and outputting the information to a succeeding orbital circuit Ci+1. AC orbital current I is used and the information is expressed by the presence or absence of the instantaneous interruption of the ±10° area with the specified phase point fixed for each phase angle 14° as a center on the AC waveform of orbital current I.
Inventors:
Masatoshi Ikeda
Tatsuya Sasaki
Shigeto Hiraguri
Tatsuya Sasaki
Shigeto Hiraguri
Application Number:
JP35281895A
Publication Date:
December 04, 2001
Filing Date:
December 28, 1995
Export Citation:
Assignee:
Railway Technical Research Institute
International Classes:
H04L27/00; H04B3/54; H04B14/00; (IPC1-7): H04B3/54; H04B14/00; H04L27/00
Domestic Patent References:
| JP5017511A | ||||
| JP1276933A | ||||
| JP5530297A | ||||
| JP3150934A | ||||
| JP62147938U | ||||
| JP59106227U |
Attorney, Agent or Firm:
Youichi Ohkawa
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