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. 03, 2023
Filed:
Oct. 26, 2021
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Goro Hamamoto, Tokyo, JP;
Tatsuyuki Ootani, Tokyo, JP;
Yutaka Uematsu, Tokyo, JP;
Jouji Matsushita, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/40 (2006.01); H03K 19/0175 (2006.01); H03K 19/00 (2006.01); H03K 19/17784 (2020.01); H03K 19/09 (2006.01);
U.S. Cl.
CPC ...
H03K 19/017545 (2013.01); G06F 13/409 (2013.01); G06F 13/4068 (2013.01); H03K 19/0005 (2013.01); H03K 19/09 (2013.01); H03K 19/17784 (2013.01);
Abstract
Main wiring including a plurality of differential transmission lines for transmitting differential signals is formed on a motherboard. Termination resistors, provided at both ends of each of the plurality of differential transmission lines, connect the plurality of differential transmission lines to each other. A plurality of daughter boards are connected in parallel to each other via the main wiring. A line characteristic impedance of each differential transmission line is higher than a termination resistance value, which is a resistance value of the termination resistor.