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:
Aug. 10, 2004
Filed:
Jul. 31, 2002
Kyoko Suzuki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The invention provides a signal transmission apparatus and a signal recording apparatus by which, while a rotary transformer is used, a wide bandwidth and a high transfer rate can be used without a significant increase of the cost or a bad influence on signal recording. A rotary transformer is interposed between a transmission side circuit and a reception side circuit. A passive element circuit including an inductance element is connected to an input stage, that is, the stator side, of the rotary transformer in parallel to the rotary transformer. The passive element circuit has an inductance value set equal to or lower than an equivalent inductance value when the circuit of the rotary transformer side is viewed from the transmission side circuit to achieve impedance matching.