| 发明名称 | Communication circuit and semiconductor device | ||
| 摘要 | A communication circuit includes a receiver circuit that provides differential communication by using first and second transmission paths which transmit first and second signals. The receiver circuit includes a compensation circuit that compensates for the attenuation of a current when common mode noise is superimposed on the first signal and on the second signal. The compensation circuit includes a first compensation circuit and a second compensation circuit. The first compensation circuit detects an electric current attenuation of the first signal when the common mode noise is superimposed thereon, and compensates for the attenuation thereof by adding the detected electric current attenuation to the second signal. The second compensation circuit detects an electric current attenuation of the second signal when the common mode noise is superimposed thereon, and compensates for the attenuation thereof by adding the detected electric current attenuation to the first signal. | ||
| 申请公布号 | US8879645(B2) | 申请公布日期 | 2014.11.04 |
| 申请号 | US201313914499 | 申请日期 | 2013.06.10 |
| 申请人 | Renesas Electronics Corporation | 发明人 | Okabe Shigeyuki |
| 分类号 | H04B3/00;H04L25/00;H04B1/10;H03K19/003 | 主分类号 | H04B3/00 |
| 代理机构 | McGinn IP Law Group, PLLC | 代理人 | McGinn IP Law Group, PLLC |
| 主权项 | 1. A communication circuit comprising: a receiver circuit that provides differential communication by using a first transmission path and a second transmission path, the first transmission path being used to transmit a first signal, the second transmission path being used to transmit a second signal, the second signal being in opposite phase to the first signal; wherein the receiver circuit includes a compensation circuit that compensates for an attenuation of a current when common mode noise is superimposed on the first signal and on the second signal, wherein the compensation circuit includes a first compensation circuit, and a second compensation circuit, wherein the first compensation circuit detects an electric current attenuation of the first signal when the common mode noise is superimposed on the first signal, and compensates for the attenuation of the first signal by adding the detected electric current attenuation to the second signal, and wherein the second compensation circuit detects an electric current attenuation of the second signal when the common mode noise is superimposed on the second signal, and compensates for the attenuation of the second signal by adding the detected electric current attenuation to the first signal. | ||
| 地址 | Kawasaki-Shi, Kanagawa JP | ||