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:
Jul. 26, 2016
Filed:
Feb. 26, 2014
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/00 (2006.01); H04L 25/02 (2006.01); H04L 25/03 (2006.01); H04L 25/20 (2006.01); H04L 7/033 (2006.01);
U.S. Cl.
CPC ...
H04L 25/0262 (2013.01); H04L 7/033 (2013.01); H04L 25/03878 (2013.01); H04L 25/20 (2013.01);
Abstract
A semiconductor device capable of determining plural transfer speeds with a small-scale circuit, and an information processing system having the semiconductor device are provided. The semiconductor device has a frequency determining circuit that receives a data signal on which plural transfer speeds can be set and that determines a transfer speed of the data signal. The frequency determining circuit latches the data signal at each of plural timings continuing with a predetermined interval, detects how many times a data switching occurs consecutively, based on the latched plural data, and determines the transfer speed of the data signal from the result of the detection.