| 摘要 |
PCT No. PCT/NO94/00014 Sec. 371 Date Jul. 17, 1995 Sec. 102(e) Date Jul. 17, 1995 PCT Filed Jan. 18, 1994 PCT Pub. No. WO94/16521 PCT Pub. Date Jul. 21, 1994A radiation imaging system includes a detector unit and a receiver unit. The detector unit includes a two-dimensional sensor, first and second amplifier channels, first and second multiplicity generators and first and second address generators. The two-dimensional sensor includes first and second sensing elements wherein the first sensing elements sense radiation in a first direction and the second sensing elements sense radiation in a second direction. The first amplifier channels corresponding to each of the first sensing elements. Each first amplifier channel generates an output signal based on a detection output from a corresponding one of the first sensing elements. The first multiplicity generator generates a first multiplicity signal representing a number of the first amplifier channels generating output signals. The first address generator generates a first analog address of a first amplifier channel associated with a received output signal. The second amplifier channels, second multiplicity generator and second address generator operate in a similar manner to the first amplifier channels, first multiplicity generator and first address generator, but with respect to the second sensing elements. The receiver unit includes converters for converting the first and second analog addresses into first and second digital addresses. The receiver Unit also includes a tester for testing whether the first and second digital addresses represent a valid position address in the first and second direction based on the first and second multiplicity signals. |
