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:
Nov. 16, 2004
Filed:
Mar. 21, 2003
Takafumi Shinohara, Hyogo, JP;
Hideaki Nagata, Hyogo, JP;
Ichiro Tomita, Hyogo, JP;
Naoyuki Takaishi, Hyogo, JP;
Fujitsu Ten Limited, Kobe, JP;
Abstract
A transmission electronic control unit includes an operation detection section for detecting the operation state of a transmission, a pulse width control section for controlling the pulse width of a current flown into a linear solenoid for operating the transmission, a constant current control section for controlling the current flown into the linear solenoid to a constant value, and an energization control section. The energization control section is responsive to detection output of the operation detection section, for performing switch control between the operation of the constant current control section and the operation of the pulse width control section so that the constant current control section energizes the linear solenoid when the operation of the transmission is placed in a constant state and that the pulse width control section energizes the linear solenoid when the operation of the transmission is not placed in the constant state.