US 12,074,740 B2
Data inversion circuit to perform DBI-AC encoding using PAM 4 signal
Jaeduk Han, Seoul (KR); Eunji Song, Seoul (KR); SangHun Lee, Seoul (KR); YunSeong Jo, Seoul (KR); HyeongMin Seo, Seoul (KR); and Hyuntae Kim, Seoul (KR)
Assigned to Industry-University Cooperation Foundation Hanyang University, Seoul (KR)
Filed by Industry-University Cooperation Foundation Hanyang University, Seoul (KR)
Filed on Aug. 26, 2022, as Appl. No. 17/896,471.
Claims priority of application No. 10-2021-0112910 (KR), filed on Aug. 26, 2021.
Prior Publication US 2023/0071072 A1, Mar. 9, 2023
Int. Cl. H04L 25/49 (2006.01)
CPC H04L 25/4917 (2013.01) 7 Claims
OG exemplary drawing
 
1. A data inversion circuit configured to perform alternating current data bus inversion (DBI-AC) encoding using a four-level pulse amplitude modulation (PAM 4) signal, the data inversion circuit comprising:
a data generation unit configured to generate input data based on the PAM 4 signal;
an auxiliary signal generation unit configured to generate an auxiliary signal that determines whether to perform encoding on the input data by analyzing the relationship between a plurality of data symbols at a current time point and a plurality of data symbols at a previous time point included in the input data;
a channel comprising a plurality of data lines; and
a data encoding unit configured to generate encoded data by performing data bus inversion (DBI) encoding on the input data based on the auxiliary signal and to transmit the generated encoded data to a data reception unit via the channel.