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. 19, 2005
Filed:
May. 28, 2003
Young-woo Kim, Chungchungnam-do, KR;
Byoung-ho Rhee, Daejeon, KR;
Dek-gin Yang, Chungchungbuk-do, KR;
Young-sang Cho, Chungchungbuk-do, KR;
Dong-hwan Lee, Chungchungbuk-do, KR;
Young-Woo Kim, Chungchungnam-do, KR;
Byoung-Ho Rhee, Daejeon, KR;
Dek-Gin Yang, Chungchungbuk-do, KR;
Young-Sang Cho, Chungchungbuk-do, KR;
Dong-Hwan Lee, Chungchungbuk-do, KR;
Samsung Electro-Mechanics Co., Ltd., Kyinggi-Do, KR;
Abstract
Disclosed herein is a method of measuring a dielectric constant of a Printed Circuit Board (PCB) for a Rambus Inline Memory Module (RIMM), which includes the steps of measuring a length of a Rambus product of a PCB, applying an input waveform to the Rambus product at a certain probing position and obtaining a cross point of rising times of the input waveform and an output waveform generated by reflection of the input waveform, obtaining time corresponding to the cross point, and calculating a dielectric constant by substituting the measured length of the Rambus product and the obtained time for corresponding variables of a dielectric constant calculating equation.