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. 03, 2017
Filed:
Apr. 08, 2014
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Mitsunori Nishida, Chiyoda-ku, JP;
Yuki Iwagami, Chiyoda-ku, JP;
Akihiro Ishii, Chiyoda-ku, JP;
Osamu Nishizawa, Chiyoda-ku, JP;
Manabu Yamashita, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A first external tool (A) serially connected to an electronic controller (A) through a pair of communication lines (LANH, LANN) applies a high voltage (Vaa) higher than a normal control voltage (Vcc) to the communication line (LANH) when a program is written. The electronic controller (A) recognizes connection of the first external tool (A) by a comparison circuit (A) for monitoring a received voltage and a write-mode determination circuit (A), initializes a microprocessor (), and receives and stores an total control program (TCPRG) in a program memory (A) based on a content of a boot program memory (). During an operation of the electronic controller (A), the external tool (A) is removed and the high voltage (Vaa) is not applied to the communication line (LANH). Therefore, the electronic control apparatus is not erroneously placed in the write mode.