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:
Apr. 24, 2018
Filed:
Nov. 15, 2013
S-printing Solution Co., Ltd., Suwon-si, KR;
Hyoung-il Kim, Hwaseong-si, KR;
Yong-ho You, Suwon-si, KR;
Seong-ho Shin, Yongin-si, KR;
Young Jung Yun, Suwon-si, KR;
Tae-young Kim, Hwaseong-si, KR;
Geon-hoon Kim, Seoul, KR;
Ho-bin Hwang, Hwaseong-si, KR;
Ji-young Byun, Suwon-si, KR;
S-PRINTING SOLUTION CO., LTD., Suwon-Si, KR;
Abstract
An image forming apparatus includes an engine unit to perform an image forming job; an engine control unit to control the operation of the engine unit; a brushless direct current (BLDC) motor to drive the engine unit; a sensor unit to sense electric angle information and driving velocity information of the BLDC motor; a communication interface to receive a digital control command with respect to the BLDC motor from the engine control unit; a driving signal unit to generate a driving signal to control the BLDC motor; and a digital control unit to control the operation of the driving signal unit in a digital phase locked loop (PLL) manner for feedback controls the BLDC motor, based on the received digital control command, the detected electric angle information and the driving velocity information and a digital gain value as a control factor with respect to the BLDC motor.