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. 26, 1997
Filed:
Apr. 26, 1995
Yoshifumi Takada, Hadano, JP;
Masakazu Yamamoto, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An interface circuit includes at least one signal processing circuit connected to a transmission line which is equipped with a terminal circuit having a resistor with a terminal voltage applied to at least one terminal, and includes an input circuit for inputting from the transmission line a signal to be processed in the signal processing circuit, or an output circuit for outputting a processed signal to the transmission line or an input and output circuit for inputting and outputting a signal. The input circuit or the output circuit or the input and output circuit are incorporated in the signal processing circuit. The input circuit or the output circuit or the input and output circuit are directly connected to the transmission line, wherein the output circuit has a push-pull circuit which is directly connected to the transmission line to receive an output signal from the signal processing circuit and to have a constant output impedance which is independent of an output from the output signal. An interface system having a signal processing circuit having he interface circuit in an interface-network is disclosed. Based on the above structure, reflection noise which occurs in the interface-network system is absorbed, with an improved focusing of a waveform, and power consumption is minimized during high-speed signal transmission.