Title:
TRANSMISSION APPARATUS, RECEPTION APPARATUS, RECEPTION SYSTEM AND RECEPTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2013/151103
Kind Code:
A1
Abstract:
The objective of the invention is to transmit more amount of information in a data transmission of mud pulse or the like using liquid. A transmission apparatus (100), which is a transmission apparatus for generating pressure waves (420) used to transmit data to mud water (410), comprises: a cylindrical member (110); a plurality of valves (120) that are arranged inside the cylindrical member (110) in the axial direction of the cylindrical member and that each consist of a stator (121), in which an aperture is formed so as to pass the mud water (410) through the aperture, and of a rotatable rotor (122) overlaid on the stator (121) and having a shield unit for shielding the aperture of the stator (121) in accordance with a rotational position; motors (130) that cause the respective rotors (122) to rotate; and a control unit (150) that controls the motors (130) such that the rotors (122) are caused to rotate and halt at mutually different frequencies in accordance with the data to be transmitted.
Inventors:
SHINMOTO YUICHI (JP)
ISHIWATA JUNYA (JP)
MIYAZAKI TSUYOSHI (JP)
ISHIWATA JUNYA (JP)
MIYAZAKI TSUYOSHI (JP)
Application Number:
PCT/JP2013/060237
Publication Date:
October 10, 2013
Filing Date:
April 03, 2013
Export Citation:
Assignee:
JAPAN AGENCY MARINE EARTH SCI (JP)
International Classes:
E21B47/24; G08C23/00; H04B13/02
Foreign References:
| JPH0757179A | 1995-03-03 | |||
| JP2008092192A | 2008-04-17 | |||
| JPS62284889A | 1987-12-10 |
Other References:
SHINMOTO, Y. ET AL.: "Numerical analysis and experimental study of fluid return pressure for mud-pulse telemetry", 2011 IEEE 3RD INTERNATIONAL CONFERENCE ON COMMUNICATION SOFTWARE AND NETWORKS (ICCSN), 27 May 2011 (2011-05-27), pages 273 - 277, XP032050772
See also references of EP 2835494A4
See also references of EP 2835494A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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