US 12,074,662 B2
Detection circuit for detecting transmission directionality of transmission line
Shih-Chuan Ho, Taipei (TW)
Assigned to BenQ Corporation, Taipei (TW)
Filed by BENQ CORPORATION, Taipei (TW)
Filed on Mar. 3, 2023, as Appl. No. 18/177,763.
Claims priority of application No. 112100667 (TW), filed on Jan. 7, 2023.
Prior Publication US 2024/0235612 A1, Jul. 11, 2024
Int. Cl. H04B 3/46 (2015.01); H04B 3/20 (2006.01)
CPC H04B 3/46 (2013.01) [H04B 3/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A detection circuit for detecting transmission directionality of a transmission line, the detection circuit comprising:
a sending terminal, connected to a first terminal of the transmission line;
a receiving terminal, connected to a second terminal of the transmission line;
a detection signal generator, coupled to the sending terminal and configured to provide a detection signal to the sending terminal;
a comparison circuit, coupled to the detection signal generator and the receiving terminal and configured to receive the detection signal from the detection signal generator and a transmission signal from the receiving terminal, and to compare the detection signal and the transmission signal to generate a comparison result; and
an output circuit, coupled to the comparison circuit and configured to output one of a first detection result signal and a second detection result signal according to the comparison result.