The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2004
Filed:
Jul. 28, 2003
August Hidalgo, San Francisco, CA (US);
Ken Poulton, Palo Alto, CA (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
A mass spectrometer having an ion accelerator and an ion detector utilizing a finite impulse response filter is disclosed. The ion accelerator generates an ion pulse in response to a start signal. A clock increments a register that indicates the time that has elapsed since the start signal. The ion detector is spatially separated from the ion accelerator and generates a measurement signal indicative of ions striking the detector. The measurement signal is filtered through a finite impulse response filter to form a filtered measurement signal. The finite impulse response filter has a filter function that depends on the impulse response of the ion detector. In one embodiment, the mass spectrometer includes a memory that is addressed by the register value and an adder. The adder forms the sum of the data value specified by the register value and the output value from the finite impulse response filter.