Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2006-12-12
2006-12-12
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C375S371000, C375S354000, C327S001000, C709S248000, C714S012000
Reexamination Certificate
active
07149269
ABSTRACT:
A receiver for clock and data recovery includes n sampling latches (SL1. . . SLn) for determining n sample values (SV1. . . SVn) of a reference signal (Ref2) at n sampling phases (φ1a. . . (φna) having sampling latch inputs and sampling latch outputs. The receiver further includes a phase position analyzer (5) connected to the sampling latch outputs for generating an adjusting signal (AS) for adjusting the sampling phase (φ1a. . . φna), if the sample value (SV1. . . SVn) deviates from a set point and a phase interpolator (9) for generating sampling phases (φ1u. . . φnu). A sampling phase adjusting unit (6) connected with its inputs to the phase position analyzer (5) and the phase interpolator (9) and with its outputs to the sampling latches (SL1. . . SLn) is provided for generating adjusted sampling phases (φ1a. . . φna) depending on the sampling phases (φ1u. . . φnu) and said adjusting signal (AS).
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Cranford, Jr. Hayden C.
Norman Vernon R.
Schmatz Martin
Cockburn Joscelyn G.
File Erin M.
Ghayour Mohammed
International Business Machines - Corporation
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