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. 25, 2014
Filed:
Jun. 08, 2011
Takashi Ichimura, Tokyo, JP;
Takanobu Naruse, Kanagawa, JP;
Chiaki Fujii, Kanagawa, JP;
Murata Manufacturing Co., Ltd, Kyoto, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
In a wiring substrate, a double data rate (DDR) memory and a memory controller controlling the DDR memory are mounted. Further, in the wiring substrate, plural equal-length wires connecting the DDR memory and the memory controller are formed. The plural equal-length wires include a differential transmission line, such as a clock wire transmitting a clock signal, which is connected via a common mode choke coil. The differential transmission line may have a wire length shorter than a wire length of another equal-length wire, by a wire length corresponding to delay time of a transmission signal due to the common mode choke coil.