US 12,306,594 B2
Receiver device and eye pattern-based control parameter adjustment method
Ling Chen, Hsinchu (TW); Prateek Kumar Goyal, Hsinchu (TW); and Xiao-Dong Fei, Hsinchu (TW)
Assigned to Faraday Technology Corporation, Suzhou (CN); and Faraday Technology Corp., Hsinchu (TW)
Filed by Faraday Technology Corporation, Suzhou (CN); and Faraday Technology Corp., Hsinchu (TW)
Filed on Apr. 28, 2022, as Appl. No. 17/732,432.
Claims priority of application No. 202210106004.2 (CN), filed on Jan. 28, 2022.
Prior Publication US 2023/0244190 A1, Aug. 3, 2023
Int. Cl. G05B 13/02 (2006.01); H04B 1/10 (2006.01)
CPC G05B 13/025 (2013.01) [G05B 13/026 (2013.01); H04B 1/109 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An eye pattern-based control parameter adjustment method, comprising:
performing an iterative operation by a control circuit to determine an optimized control parameter;
updating a current control parameter of a receiving circuit to the optimized control parameter after completing the iterative operation; and
performing hint optimization,
wherein the hint optimization comprises:
calling a table sweep state machine to perform the iterative operation on a hint table to determine an optimized hint index after sweeping a plurality of hint indexes in a hint index field of the hint table;
wherein the iterative operation comprises:
updating the current control parameter of the receiving circuit to a candidate control parameter, so that the receiving circuit processes an input signal according to the current control parameter to generate recovered data;
checking a relationship between a size of an optimized eye mask and a size of a current eye pattern corresponding to the recovered data;
maintaining the optimized eye mask and the optimized control parameter corresponding to the optimized eye mask when the optimized eye mask conflicts with the current eye pattern;
generating a new eye mask larger than the optimized eye mask according to the current eye pattern, updating the optimized eye mask to the new eye mask, and updating the optimized control parameter to the candidate control parameter corresponding to the new eye mask when the optimized eye mask does not conflict with the current eye pattern;
selecting a selected hint index from the hint indexes in the hint index field according to a starting hint index, an ending hint index and a hint index step;
extracting a plurality of parameter indexes corresponding to the selected hint index from a plurality of parameter index fields of the hint table, wherein the parameter indexes indicate a plurality of control parameters in a plurality of control parameter tables; and
using the control parameters in the control parameter tables indicated by the parameter indexes as the candidate control parameter.