Data communications systems
AssigneeInternational Business Machines Corporation
InventorsJames S. Mason, Louis C. Hsu, Phil J. Murfet, Gareth J. Nicholls
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Abstract
A receiver for a data communications system comprises: a data path for receiving a data signal from a data channel, the data path comprising an automatic gain control (AGC) loop; and, a signal detector for generating a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding a threshold and in dependence upon gain information from the AGC loop in the data path.
Claims7
A receiver for a data communications system, the receiver comprising:
- a data path for receiving a data signal from a data channel, the data path comprising an automatic gain control (AGC) loop;
- a signal detector outside said AGC loop, the signal detector comprising a comparator for comparing the data signal to a threshold for generating a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding the threshold and in dependence upon gain information from the AGC loop in the data path;
- and
- a variable signal source for setting the threshold in dependence upon the gain information from the data path.
A method for data communications, the method comprising:
- receiving a data signal in a data path having an automatic gain control (AGC) loop;
- generating, using a signal detector comprising a comparator for comparing the data signal to a threshold, a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding the threshold and in dependence upon gain information from the AGC loop in the data path;
- and
- setting, using a variable signal source, the threshold in dependence upon the gain information from the data path.
Dependencies are inferred from the claim text.