Data processing apparatus for chromatograph
AssigneeHitachi, Ltd.
InventorsMasahito Ito, Kisaburo Deguchi, Yoshiaki Seki
Life of this patent
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Abstract
A method of properly correcting a base line. A concept of flexibility of a base line is introduced as an input index and a gravitation is presumed between the base line and signal data which is measured, thereby constructing a method of correcting the base line which changes gentler than a change in signal with respect to time in a peak area and which is sensitive to an area where a value of the signal data is small. A base line like a natural and smooth curve which isn't easily influenced by a local change in signal such as noise or the like can be set by an input of the flexibility.
Claims7
A data processing apparatus for a chromatograph comprising:
- means for detecting output values of a measuring target sample which is obtained within a time zone, and for forming a chromatogram having plurality of data points representing signal intensities at various times within said time zone on the basis of said detected output values, and
- a base line forming means for forming a base line having plurality of forming points each at a time within said time zone corresponding to one of said data points,
- said forming means forming the base line such that:
- each of said forming points is disposed so as to be closer to a corresponding data point when the signal intensity of said data point is smaller, and
- neighboring forming points are disposed so as to be closer to each other in a direction of said signal intensity, when a difference in said direction between one said forming points and another adjacent one of said forming point is larger.
A data processing apparatus for a chromatograph comprising:
- means for detecting output values of a measuring target sample which is obtained within a time zone, and for forming a chromatogram having a plurality of data points representing signal intensities at various times within said time zone on the basis of said detected output intensities, said signal values measured with reference to a standard base line, and
- a base line forming means for forming a base line having plurality of forming points each at a time within said time zone corresponding to one of said data points,
- said forming means forming the base line such that:
- each of said forming points is disposed so as to be closer to a corresponding data point when the signal intensity of said data point is smaller, and
- neighboring forming points are disposed so as to be closer to each other in a direction of said signal intensity, when a difference in said direction between one said forming points and another adjacent one of said forming point is larger.
Dependencies are inferred from the claim text.