X-ray onset detector and method
US5757011A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 10, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for visualizing a scene in the form of image rays projecting along a path includes a plurality of charge coupled device detectors disposed along the path to receive the image rays and to collect data. This data includes both noise data which is collected at a generally constant rate, and image data which is collected when the image rays are present along the path. A clock which facilitates discharge of the data from the image array has a first state wherein the data is retained in the detectors, and a second state wherein the data is discharged from the detectors. An event detector including a plurality of charge coupled device detectors forms an event array which places the clock in the first state when the image rays are present along the path and places the clock in the second state when the image rays are absent from the path. Accordingly, the noise data which combines with the image data in the image detectors is limited to that which accumulates while the image rays are present along the path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.