Daiho Construction Co., Ltd.

Oki Electric Industry Co., Ltd.

Daiho Corporation

Norio Kondo

Yutaka Kashima

Hakumi Hagimoto

Masaki Sato

Masayuki Taniguchi

Atsushi Ikeno

Hideki Yamamoto

Masami Inoue

Tsutomu Tomisawa

Kiichi Honma

Masumi Inoue

This invention provides a method and a system for selling content capable of ensuring a fair profit of a copyrighter of a creation in content. More specifically, this invention provides a method and a system for selling content for judging whether an user terminal has purchase information of each creation in content including one or two creations or more or not and for calculating forwarding charge of the content based on whether the user terminal has purchase information of each creation in the content or not, in forwarding the content to the user terminal. The method and system for selling content enable to circulate the creation itself in the content as the object of dealing and to gain profit directly from the user of content. Therefore, the copyrighter can gain the fair profit without being influenced by the achievement of the content including the creation. This is also to encourage the creative urge of the creator and to improve the creative level of the creator. In addition, since the user of content can purchase the content including the creation having the purchase information with cheap price, consumption activity is to be vitalized effectively.

Method and system for selling content

A system and method for distributing digital content is capable of preventing illegal use of digital content and leak of user information. A creator terminalforwards content, copyright information and conditions for quotation to a content distribution server. A user terminalforwards an application for using the content to the content distribution server. The content distribution serverembeds copyright information in the content to which the user terminalhas forwarded the application for using the content and the user information is embedded in the content to which the user terminalhas forwarded the application for using the content. The relation among a content size Sq which is permitted to be quoted according to conditions for quotation, a content size Sc in which the copyright information is embedded and a content size Su in which the user information is embedded is expressed by Sc&#x3c;Sq&#x3c;Su.

System and method for distributing digital content

A shield tunnel boring machine having a parallel link excavator includes excess excavating cutters joined to the excavator and divided into a plurality of steps. The excess excavating cutters of the respective steps are coupled to separate corresponding jacks that are actuatable and controlled independently of each other for allowing the position of the machine to be effectively controlled to be able to quickly correct any undesired change in direction of the tunnel boring operation.

Shield tunnel boring machine

An underground excavator includes a chamber defined in the forward section of an excavator body for receiving excavated material such as soil, sand, gravel, clay and their mixtures. A rotary cutter is mounted to the forward end of a rotary shaft for penetrating through the chamber for axial rotation and simultaneous rocking in an axial direction. The cutter has a conical cutter face plate having holes for passing the excavated material of a diameter smaller than an opening disposed in the chamber. Any gravel or the like present in the advancing route to the underground excavator and smaller than the holes of the cutter is received into the chamber to be discharged from the excavator. Any gravel larger than the holes or the like not receivable into the chamber is moved quickly along the conical cutter face plate toward peripheral ground layer by being subjected to the rocking motion of the conical cutter face plate simultaneously with the rotation of the cutter during advancement of the excavator. Facilities and labor formerly required for removing larger gravel or like materials can be omitted to remarkably reduce excavation costs.

Underground excavator

A caisson sinking method comprises the steps of excavating the ground to make a support ditch having the same plan-view shape as a caisson to be sunk, casting into the excavated ditch a bearing material that can carry the caisson as supported in the ditch but collapses easily by itself, placing entire tapered bottom edge of the caisson on the bearing material cast in the support ditch as aligned therewith, and sequentially removing the bearing material immediately below the bottom edge of the caisson, the caisson being thereby smoothly sunk down to a caisson sinking position without any tilting of the caisson.

Caisson sinking method

A shield tunnel boring machine having at its boring head a pressure-resisting mud kneading chamber defined by a bulkhead, wherein the bulkhead is divided into outer peripheral and central bulkhead parts. The outer peripheral bulkhead part is fixed to the inner periphery of a cylindrical shield. The central bulkhead part is made rotatable in association with a head-positioned rotary cutter as driven by a main motor. The sealing means required for the bulkhead is limited to seal one for a gap between the fixed outer peripheral bulkhead part and the rotatable central bulkhead part and the number of necessary related parts can be remarkably reduced.

Growing community of inventors

Tokyo, Japan

Norio Kondo