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:
Oct. 17, 2000
Filed:
Oct. 27, 1997
Takashi Soya, Ninomiya-machi, JP;
Toshiyuki Sekiya, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A communicating apparatus for performing a serial communication with a plurality of communication control units which are cascade connected, including a communicating unit for performing a serial communication with each of the communication control units, a storing unit for storing position data indicative of the order of the communication control units which are cascade connected, and a diagnosing unit for diagnosing a communication abnormal portion on the basis of the position data stored in the storing unit. The diagnosing unit executes a predetermined communication with the communication control unit existing at a position that is closest to the communicating apparatus on the basis of the position data stored in the storing unit and performs a diagnosis on the basis of a result of the predetermined communication. The communicating unit transmits address data to designate the communication control unit to be communicated. The storing unit stores the position data and the address data in correspondence to each other. The communicating unit executes a communication in accordance with the priorities which are made correspond to the address data.