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:
Jun. 15, 2021
Filed:
Sep. 10, 2018
Denso Corporation, Kariya, JP;
Tatsuro Kawakami, Kariya, JP;
Takeshi Sugashima, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An abnormality detection device includes: a receiver, a reception predictor, frame information storage, and an abnormality determiner. The receiver receives a communication frame via a communication network. The frame information storage stores information regarding the communication frame. The reception predictor calculates and sets a predicted time range including a scheduled reception time of the communication frame of a target frame type from among a plurality of frame types received by the receiver by referencing the frame information storage and the reception time of the communication frame when the communication frame is received. The abnormality determiner determines the target communication frame is an abnormal frame when the target communication frame is received at a time outside the predicted reception range.