Apparatus and method for scanning information stored in a memory phosphor
AssigneeAgfa-Gevaert
InventorsHerbert Gebele, Jurgen Muller, Robert Fasbender
Life of this patent
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Abstract
An apparatus for reading information stored in a memory phosphor has a detecting device with an array of radiation-sensitive surface segments which during a pre-settable integration time interval receive a secondary radiation emitted by the memory phosphor. The apparatus includes a controller device that sets the integration time interval dependent on an amount of secondary radiation that was received at a preceding time. The controller device can also connect the radiation-sensitive surface segments into groups whose size depends on the amount of secondary radiation that was received at a preceding time.
Claims38
An apparatus for reading information stored in a memory phosphor, said apparatus comprising a detecting device for detecting a secondary radiation emitted by the memory phosphor;
- wherein the detecting device comprises a plurality of radiation-sensitive surface segments operable to receive the secondary radiation during a pre-settable integration time interval;
- said apparatus further comprising a controller device operable to set the integration time interval dependent on a detected amount of said secondary radiation received by at least one of the radiation-sensitive surface segments at a preceding time.
An apparatus for reading information stored in a memory phosphor, said apparatus comprising a detecting device for detecting a secondary radiation emitted by the memory phosphor;
- wherein the detecting device comprises a plurality of radiation-sensitive surface segments operable to receive the secondary radiation and wherein the detecting device is operable to generate electrical signals indicative of amounts of said secondary radiation received by the surface segments;
- said apparatus further comprising a controller device operable to connect the radiation-sensitive surface segments into one or more groups dependent on a detected amount of said secondary radiation received by at least one of the radiation-sensitive surface segments at a preceding time, so that the detecting device generates a combined signal for the surface elements of each group, said combined signal being indicative of a combined amount of said secondary radiation received by a group of surface segments.
An apparatus for reading information stored in a memory phosphor, said apparatus comprising a detecting device for detecting a secondary radiation emitted by the memory phosphor;
- wherein the detecting device comprises an array of radiation-sensitive surface segments operable to receive the secondary radiation during a pre-settable integration time interval;
- said apparatus further comprising a controller device operable to set the integration time interval dependent on a detected amount of said secondary radiation received by at least one of the radiation-sensitive surface segments at a preceding time, and also operable to connect the radiation-sensitive surface segments into groups dependent on said detected amount of said secondary radiation.
A method of reading information stored in a memory phosphor, comprising the steps of:
- a) by means of a plurality of radiation-sensitive surface segments, receiving a secondary radiation emitted by the memory phosphor during a currently effective integration time interval;
- b) evaluating an amount of said secondary radiation received by at least one of the radiation-sensitive surface segments during the currently effective integration time interval;
- c) based on said evaluation, maintaining the currently effective integration time interval for a next cycle of the method, or setting a new integration time interval for the next cycle of the method;
- d) proceeding to the next cycle beginning with step a).
A method of reading information stored in a memory phosphor, wherein the memory phosphor emits a secondary radiation that is received by a plurality of radiation-sensitive surface segments of a detecting device, wherein the detecting device generates electrical signals indicative of amounts of said secondary radiation received by the surface segments, and wherein said surface segments can be connected into one or more groups of surface segments, the method comprising the steps of:
- a) by means of the plurality of radiation-sensitive surface segments, receiving the secondary radiation emitted by the memory phosphor;
- b) evaluating an amount of said secondary radiation received by at least one of the radiation-sensitive surface segments;
- c) based on said evaluation, maintaining a currently effective grouping of surface segments for a next cycle of the method, or switching to a different grouping of surface segments for the next cycle of the method;
- d) proceeding to the next cycle beginning with step a).
Dependencies are inferred from the claim text.