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. 03, 2020
Filed:
May. 23, 2018
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Koji Maeda, Tokyo, JP;
Izumi Fukasaku, Tokyo, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
Provided is an electric transmission cable module that has both a squelch function and an AGC function, and realizes a highly accurate function while suppressing an increase in chip cost. Disclosed is an electric transmission cable module including a first amplifier that compensates for a cable loss of a conductive cable, a second amplifier having a variable gain function, a third amplifier allowed to transit between a normal state for amplifying a signal and an idle state having smaller power consumption than power consumption in the normal state, a detector that detects a signal level on a signal transmission line between the first amplifier and the third amplifier, an analog-to-digital conversion circuit that converts the signal level into a digital signal, a first control circuit that generates a gain adjustment signal for controlling a gain of the second amplifier based on the digital signal, and a second control circuit that controls transition between the normal state and the idle state of the third amplifier based on the digital signal.