US 12,326,785 B2
Transmission side transmission device and redundancy method of transmission side transmission device
Katsuhiro Araya, Musashino (JP); Hiroto Takechi, Musashino (JP); Yasutaka Sugano, Musashino (JP); Masahiro Yokota, Musashino (JP); and Hideki Maeda, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Filed on Jun. 12, 2024, as Appl. No. 18/740,683.
Application 18/740,683 is a continuation of application No. 18/015,857, granted, now 12,038,813, previously published as PCT/JP2020/027249, filed on Jul. 13, 2020.
Prior Publication US 2024/0330112 A1, Oct. 3, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 11/14 (2006.01); H04L 1/22 (2006.01)
CPC G06F 11/1443 (2013.01) [H04L 1/22 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A transmission side transmission device comprising: a first transmitter including a first switch; and a second transmitter including a second switch,
wherein a main signal is input to either the first transmitter or the second transmitter, the main signal input to the first transmitter being a first main signal and the main signal input to the second transmitter being a second main signal,
wherein the first switch of the first transmitter includes a first selector to which the first main signal is input and to which the second main signal is input from the second transmitter, the first selector configured to output either the first main signal or the second main signal input from the second transmitter,
wherein the second switch of the second transmitter includes a second selector to which the second main signal is input and to which the first main signal is input from the first transmitter, the second selector configured to output either the second main signal or the first main signal input from the first transmitter, and
wherein the first transmitter and the second transmitter are configured such that, when the first transmitter detects a fault in the first main signal:
the first transmitter issues a notification indicating the detection of the fault to cause switching in the input of the main signal from the input to the first transmitter to the input to the second transmitter;
the second transmitter outputs the second main signal to the first transmitter; and
the first transmitter outputs the second main signal input from the second transmitter via the first selector.