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:
Mar. 21, 2006
Filed:
Jan. 30, 2002
Tsuyoshi Ebuchi, Osaka, JP;
Takefumi Yoshikawa, Osaka, JP;
Tsuyoshi Ebuchi, Osaka, JP;
Takefumi Yoshikawa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The driver circuit of the present invention includes: a drive section for generating a differential signal according to an input signal and outputting the signal to an electric cable or an optical transceiver; and a control section receiving a selection signal based on which the drive section selects to drive the electric cable or the optical transceiver, an identification signal, and a data signal, for generating a signal based on the received signals and outputting the generated signal to the drive section. During a period indicated by the identification signal, the control section controls the drive section to put the output of the drive section in a high impedance state when the selection signal indicates selection of the electric cable, or output a predetermined differential signal, not putting the output in a high impedance state, when the selection signal indicates selection of the optical transceiver.