Signal processing device and method

Details Signal processing device and method Signal processing device and method

2006-06-20

2011-11-15

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

C375S317000, C375S316000, C329S347000

Reexamination Certificate

active

08059757

ABSTRACT:
A test signal is generated and supplied to a signal processing circuit for making frequency conversion. A signal outputted from the signal processing circuit is detected to generate a detected signal including a detected positive signal corresponding to the positive signal of the test signal and a detected negative signal corresponding to the negative signal. And the level of the detected positive signal and the level of the detected negative signal are compared to output the comparison result indicating which level is higher. Further, an offset correction signal for making a level difference between the detected positive signal and the detected negative signal within a preset permissible range is generated, based on the comparison result, and offset correction of the test signal or modulated signal supplied from the outside is made in accordance with the offset correction signal.

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Written Opinion of the International Searching Authority, Jan. 10, 2008.

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