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1. (WO2018160603) METHOD FOR MEASURING AND CORRECTING MULTIWIRE SKEW

Pub. No.:    WO/2018/160603    International Application No.:    PCT/US2018/020051
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Wed Feb 28 00:59:59 CET 2018
IPC: G06F 1/10
G06F 11/00
G11B 20/20
H04B 3/02
H04B 17/364
Applicants: KANDOU LABS, S.A.
INVENTION MINE LLC
Inventors: HORMATI, Ali
Title: METHOD FOR MEASURING AND CORRECTING MULTIWIRE SKEW
Abstract:
Methods and systems are described for sequentially obtaining a plurality of data streams, the plurality of data streams comprising a data stream in a current condition, a data stream in a skewed-forward condition, and a data stream in a skewed-backward condition, calculating, for each data stream in the plurality of data streams, a corresponding set of cost-function values by obtaining a corresponding set of eye measurements, the eye measurements obtained by adjusting a sampling threshold of a sampler generating a plurality of samples of the data stream, the plurality of samples comprising edge samples and data samples, wherein the data stream is sampled at a rate equal to twice a rate of the data stream and calculating the corresponding set of cost- function values based on the corresponding set of eye measurements, and generating a skew control signal based on a comparison of the sets of calculated cost-function values.