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, 2003
Filed:
May. 21, 1999
Applicant:
Inventors:
Takashi Ueda, Kyoto, JP;
Masanori Fujisawa, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 5/22 ;
U.S. Cl.
CPC ...
H04Q 5/22 ;
Abstract
A non-contact communication system and an interrogator used therein achieve communication of information with a responsor, regardless of whether the responsor adopts a signal superimposition system or a signal separation system. The communication system includes first and second carrier supply portions ( ), first and second carrier modulation portions ( ), first and second carrier output portions ( ), first and second carrier detection portions ( ) and a control portion ( ) using response information from the responsor to identify a system adopted by the responsor so that information is transmitted in a form matched to the identified system.