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US 6,675,107 B2Granted
Data processing apparatus for chromatograph
AssigneesHitachi, Ltd., Hitachi Instruments Engineering Co., Ltd.
InventorsMasahito Ito, Kisaburo Deguchi, Yoshiaki Seki
Life of this patent
Estimating the term…
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.
Claims4
A chromatography comprising:
- a detector for detecting a sample so as to output a measuring signal according to elapsed time,
- an input unit for inputting a strength parameter characterizing a form of base line by an operator,
- a data processor for processing said measuring signal based on said strength parameter so as to output a chromatogram formed with a plurality of chromatogram data points and a base line corresponding to said chromatogram, said data processor correcting a plurality of datapoints forming said base line based on a relation of in which said strength parameter exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line, and
- a display for displaying said chromatogram and said base line, said display having a flexibility display area for displaying said difference in direction of signal strength of said chromatogram between said adjacent data points of said base line.
1 more element
A chromatography comprising:
- a detector for detecting a sample so as to output a measuring signal according to elapsed time,
- an input unit for inputting a strength parameter characterizing a form of base line by an operator,
- a data processor for processing said measuring signal based on said strength parameter so as to output a chromatogram formed with a plurality of chromatogram data points and a base line corresponding to said chromatogram, said data processor correcting a plurality of data points forming said base line based on a first relation such that a difference between a signal data point of said chromatogram and a point of said base line exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line and/or a second relation such that on said strength parameter exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line, and
- a display for displaying said chromatogram and said base line, said display having a flexibility display area for displaying said difference in direction of signal strength of said chromatogram between said adjacent data points of said base line.
1 more element
A chromatography comprising:
- a detector for detecting a sample so as to output a measuring signal according to elapased time,
- an input unit for inputting a flexibility parameter characterizing a form of base line by an operator,
- a data processor for processing said measuring signal based on said flexibility parameter so as to output a chromatogram formed with a plurality of chromatogram data points and a base line corresponding to said chromatogram, said data processor correcting a plurality of data points forming said base line based on a relation of in which said flexibility parameter exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line, and
- a display for displaying said chromatogram and said base line, said display having an area to set said flexibility parameter and to show a present flexibility parameter.
1 more element
A chromatography comprising:
- a detector for detecting a sample so as to output a measuring signal according to elasped time,
- an input unit for inputting a flexibility parameter characterizing a form of base line by an operator,
- a data processor for processing said measuring signal based on said flexibility parameter so as to output a chromatogram formed with a plurality of chromatogram data points and a base line corresponding to said chromatogram, said data processor correcting a plurality of data points forming said base line on a first relation such that a difference between a signal data point of said chromatogram and a point of said base line exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line and/or a second elation such that on said flexibility parameter exhibits a difference in a direction of signal strength of said chromatogram between adjacent data points of said base line, and
- a display for displaying said chromatogram and said base line, said display having an area to set said flexibility parameter and to show a present flexibility parameter.
1 more element
Dependencies are inferred from the claim text.