US 12,119,829 B2
Clock data recovery circuits and electronic systems that support data-based clock recovery
Dongho Choi, Suwon-si (KR); Jaeduk Han, Seoul (KR); Yongho Song, Suwon-si (KR); Youngho Kwak, Suwon-si (KR); Gaeryun Sung, Seoul (KR); Dongju Yang, Seoul (KR); Kwanghee Choi, Suwon-si (KR); and Hyeongmin Seo, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., (KR); and IUCF-HYU(INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Apr. 28, 2023, as Appl. No. 18/308,754.
Claims priority of application No. 10-2022-0077225 (KR), filed on Jun. 24, 2022.
Prior Publication US 2023/0421161 A1, Dec. 28, 2023
Int. Cl. H03L 7/08 (2006.01); H03L 7/091 (2006.01); H03L 7/099 (2006.01)
CPC H03L 7/0807 (2013.01) [H03L 7/091 (2013.01); H03L 7/0998 (2013.01)] 20 Claims
OG exemplary drawing
 
18. An electronic system, comprising:
a communication channel;
a first device having a transmitter therein, which is configured to output a data signal to the communication channel; and
a second device having a receiver therein, which is connected to the communication channel, said the receiver configured to: (i) recover, based on transition time points of the data signal, multiphase edge clock signals, (ii) adjust phases of the multiphase edge clock signals such that sampling time points of the multiphase edge clock signals have an equal interval therebetween, when sampling time points of some edge clock signals among the multiphase edge clock signals precede the transition time points and sampling time points of some of remaining edge clock signals lag behind the transition time points, (iii) sample the data signal with multiphase sampling clock signals having an intermediate phase of the multiphase edge clock signals, (iv) detect predetermined data patterns from the sampled data signal, and (v) adjust phases of the multiphase sampling clock signals according to a result of comparing, with each other, signal levels at sampling time points for sampling respective reference data symbols of the predetermined data patterns.