公开(公告)号：US20200089438A1

公开(公告)日：2020-03-19

申请号：US16467881

申请日：2017-04-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Xavier Ponce Garcia ,  Jordi Hernandez Creus ,  Ricard Silvestre

IPC: G06F3/12 ,  H04B3/04 ,  H04L7/04 ,  H04L7/00

Abstract: Devices and methods for calibrating communication lines are disclosed. A clock sets a frequency of transmission through a communication line. A delay compensator, comprising multi-tap delay lines introduces delays in a transmitted message to compensate for skew in the communication line. An error comparator, coupled to the delay compensator, identifies errors in the messages transmitted through the multi-tap delay lines above an error margin. A delay selector, coupled to the error comparator and to the delay compensator, selects taps of the multi-tap delay lines of the delay compensator. Taps of the multi-tap delay lines where no errors are identified for the selected clock frequency are stored in a memory.

公开(公告)号：US10853004B2

公开(公告)日：2020-12-01

申请号：US16467881

申请日：2017-04-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Xavier Ponce Garcia ,  Jordi Hernandez Creus ,  Ricard Silvestre

IPC: G06F3/12 ,  H04B3/04 ,  H04L7/00 ,  H04L7/04

Abstract: Devices and methods for calibrating communication lines are disclosed. A clock sets a frequency of transmission through a communication line. A delay compensator, comprising multi-tap delay lines introduces delays in a transmitted message to compensate for skew in the communication line. An error comparator, coupled to the delay compensator, identifies errors in the messages transmitted through the multi-tap delay lines above an error margin. A delay selector, coupled to the error comparator and to the delay compensator, selects taps of the multi-tap delay lines of the delay compensator. Taps of the multi-tap delay lines where no errors are identified for the selected clock frequency are stored in a memory.