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. 09, 1994
Filed:
Jan. 13, 1993
Naofumi Watanabe, Tochigi, JP;
Yasuo Nobuta, Tochigi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An optical data transmission apparatus which is used to transmit a signal between the rotating portion and fixed portion of an X-ray CT scanner comprises light emitting elements arranged on a side plane of the rotating portion which is perpendicular to a rotation axis and are uniformly driven according to transmission data to emit lights in a direction parallel to the rotation axis. A light receiving element is disposed on the side plane of the fixed portion which faces the light emitting elements. The interval between the light emitting elements is so set that the illumination areas formed by the light emitting elements partly overlap each other on the light receiving element. Therefore, the light receiving element always receives a light or lights from one or two of the light emitting elements during the rotation of the rotating portion and transmission data from all of the light emitting elements can be continuously transmitted to the light receiving element.