The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2004
Filed:
Jun. 29, 1999
Shigeo Kajita, Tokyo, JP;
Katsusuke Awano, Tokyo, JP;
Shoji Tozawa, Tokyo, JP;
Hiroyasu Nishikawa, Tokyo, JP;
Masatoshi Miki, Tokyo, JP;
Shin Caterpillar Mitsubishi Ltd., Tokyo, JP;
Abstract
The present invention relates to remote radio control technology, and a remote radio control system includes a radio movable working machine ( ), a remote control apparatus ( A), and a movable repeater station ( ). First bidirectional communication means ( ) having a high radio wave directionality and first automatic tracking means ( A) are provided between the working machine ( ) and the repeater station ( ), and second bidirectional communication means ( ) having a high radio wave directionality, second automatic tracking means ( A, A), and emergency spread spectrum bidirectional communication means ( ) for enabling bidirectional communication between the remote control apparatus ( A) and the repeater station ( ) when communication by the second bidirectional communication means ( ) is impossible are provided between the remote control apparatus ( A) and the repeater station ( ). Consequently, even if communication between the working machine ( ) and the movable repeater station ( ) is disabled, each of the working machine ( ) and the repeater station ( ) is permitted to perform a minimum necessary operation, and any other person than those skilled in actual controlling operation of the working machine ( ) can perform remote control easily.