DIGITAL SIGNAL RECEIVER WITH Q-MONITOR
First Claim
1. A digital signal receiver for a high-bitrate digital signal comprising a serial signal input and a number of N parallel digital signal outputs with N>
- 1, the receiver further comprising at least N+1 digital sampling channels, a Q-monitor circuit for comparing the output signal of at least two of said sampling channels, and a switch fabric for controllably connecting N of said sampling channels to said output leads and at least two of said sampling channels to said Q-monitor.
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Abstract
A digital signal receiver for a high-bitrate digital signal has a serial signal input (20, 20′) and a number of N parallel digital signal outputs (26) with N>1. The receiver contains at least N+1 digital sampling channels (31-35), a Q-monitor (37, 38) for comparing the output signal of at least two of said sampling channels (31-35), and a switch fabric (36) for controllably connecting N of said sampling channels (31-35) to said output leads (36) and at least two of said sampling channels (31-35) to said Q-monitor (37, 38). This allows to use N of the sampling channels to provide the N output signals while at the same time, the at least one remaining sampling channel can be used by the Q-monitor to scan an eye diagram.
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Citations
11 Claims
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1. A digital signal receiver for a high-bitrate digital signal comprising a serial signal input and a number of N parallel digital signal outputs with N>
- 1, the receiver further comprising at least N+1 digital sampling channels, a Q-monitor circuit for comparing the output signal of at least two of said sampling channels, and a switch fabric for controllably connecting N of said sampling channels to said output leads and at least two of said sampling channels to said Q-monitor.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of regenerating a high-bitrate digital signal and converting it to an N-bit wide parallel output signal with N>
- 1, comprising the steps of
providing at least N+1 sampling channels; connecting N of said sampling channels to a parallel signal output; connecting two of said sampling channels comprising the at least one remaining one to a Q-monitor; using said Q-monitor to measure a one- or two-dimensional eye diagram of the at least one remaining sampling channel by varying a phase and/or threshold value thereof; and repeating said steps using different assignment of sampling channels until eye-diagrams for all sampling channels have been measured.
- 1, comprising the steps of
Specification