Single scan microprocessor-controlled densitometer
US4242730A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Mar 9, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/5907
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microprocessor-controlled densitometer system for optically scanning a blood sample or the like and generating an electric analog signal which is a function of the optical density of the scanned sample. The electrical analog signal is processed and converted into digital data for storage in a memory as raw sample data to be retained until the next given sample is scanned. Under microprocessor control, a CRT device displays a re-constructed optical density analog waveform pattern representative of the generated electrical analog signal and may be normalized for full-scale readings. While the optical density analog waveform pattern is displayed on the CRT device, the operator may visually inspect and edit the analog waveform pattern by manually positioning a cursor signal along the CRT displayed analog waveform pattern for addressing selected positions thereon and modify the analog waveform pattern by keyboard entries which add, delete, or modify fraction boundary locations, delete portions of the analog waveform pattern from computations, etc., via keyboard entries and under microprocessor control. Once the operator is satisfied with the edited analog waveform pattern and the vari…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.