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:
Jan. 25, 2011
Filed:
Dec. 28, 2008
Taek-sang Song, Gyeonggi-do, KR;
Kyung-hoon Kim, Gyeonggi-do, KR;
Dae-han Kwon, Gyeonggi-do, KR;
Dae-kun Yoon, Gyeonggi-do, KR;
Taek-Sang Song, Gyeonggi-do, KR;
Kyung-Hoon Kim, Gyeonggi-do, KR;
Dae-Han Kwon, Gyeonggi-do, KR;
Dae-Kun Yoon, Gyeonggi-do, KR;
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Abstract
A low pass filter includes a driver unit configured to output a voltage proportional to an input pulse width, a charge/discharge unit configured to charge the output voltage of the driver unit, a comparator unit configured to compare an output voltage of the charge/discharge unit with a reference value to output a square wave signal, and a switching unit configured to switch the charge/discharge unit to an operation state, based on a bandwidth expansion signal.