Method and device for adjusting reference level

Details Method and device for adjusting reference level Method and device for adjusting reference level

2007-04-03

2007-04-03

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

C369S059210, C369S059180

Reexamination Certificate

active

10670593

ABSTRACT:
A method for adjusting a reference level of an analog signal from a plurality of periodically sampled points includes the following steps. Firstly, a first level shift from an preliminary reference level to the last second sampled point within a specified period and a second level shift from the preliminary reference level to the last sampled point within the specified period is determined when one of a first level of the last second sampled point and a second level of the last sampled point is higher than the preliminary reference level and the other is lower than the preliminary reference level. Then, the preliminary reference level is moved toward the first level when an absolute value of the first level shift is greater than an absolute value of the second level shift, and the preliminary reference level is moved toward the second level when the absolute value of the first level shift is less than the absolute value of the second level shift, thereby defining an adjusted reference level.

REFERENCES:
patent: 4786794 (1988-11-01), Doi
patent: 6249496 (2001-06-01), Tsukahara et al.
patent: 6272105 (2001-08-01), Hayashi
patent: 7065027 (2006-06-01), Cheng et al.

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