Halftone display, particularly for a high resolution radioactivity distribution detection system
US4044332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Jun 9, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2978
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A device for presenting a halftone pictorial presentation composed of dot picture elements by selectively controlling the number of dot picture elements per unit area at locations on a display. In a high resolution radioactivity distribution detection system, the number of detected radioactive elements at XY locations of an array of sensing devices are fed to a computer and stored at corresponding address locations. The number of radioactive events detected at each address location is normalized into Gray scale coded signals as a function of the greatest number of radioactive events detected at any one address location. The normalized Gray scale coded signals are applied to a display for controlling the number of dot picture elements per unit area presented at corresponding XY locations on the display. The number of radioactive events detected at XY locations of the array are presented on the display as a halftone pictorial representation; the greatest number of picture dot elements per unit are being presented as a brighter image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.