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:
May. 10, 2022
Filed:
Oct. 28, 2016
Siemens Aktiengesellschaft, Munich, DE;
Glen Eugene Schmidt, Bartlesville, OK (US);
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
A Gas Chromatograph (GC) detector comprises a first circuit, a second circuit, a digital subtractor and a digital logic shared between one to many detector channels to provide a GC measurement in a digital form. The first circuit includes a first counter circuitry to provide a first counter output. The second circuit includes a second counter circuitry to provide a second counter output. The GC detector includes a digital subtractor to subtract the first counter output from the second counter output and provide a digital subtractor output. The GC detector further includes a digital logic shared between one to many detector channels to implement at least a portion of the first counter circuitry and the second counter circuitry. The digital logic to receive the digital subtractor output and provides the GC measurement in the digital form. The GC detector may be based on a Thermal Conductivity Detector (TCD) in which an integrator of a Sigma-Delta (Σ-Δ) A/D converter is eliminated and the Σ factor of the Sigma-Delta (Σ-Δ) A/D converter is accomplished in a digital form.