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:
Feb. 18, 2014
Filed:
Jan. 20, 2009
Zhigang Xu, Shandong, CN;
Guangdong HU, Shandong, CN;
Bingqing Liu, Shandong, CN;
Mingang Ou, Shandong, CN;
Zhenhu Xie, Shandong, CN;
Zhigang Xu, Shandong, CN;
Guangdong Hu, Shandong, CN;
Bingqing Liu, Shandong, CN;
Mingang Ou, Shandong, CN;
Zhenhu Xie, Shandong, CN;
Shandong New Beiyang Information Technology Co., Ltd, Weihai, Shandong, CN;
Abstract
A device and a method for controlling a bit density of a magnetic card () are provided. Said control device comprises a stepper motor () providing power to drive the magnetic card () or a recording magnetic head (), a transmission mechanism transferring power to the magnetic card () or the recording magnetic head (), a CPU () sending magnetic recording information, a track data encoder () receiving a magnetic writing pulse signal (CLK) and generating magnetic writing data in synchronization with the magnetic writing pulse signal (CLK), and a magnetic head driving circuit () outputting a magnetic writing control signal based on the magnetic writing data. The frequency of the magnetic writing pulse signal (CLK) and the frequency of a driving pulse signal (CLK) of the stepper motor are in a linear relationship. Said control method is a method for controlling a bit density.