Patent ID: 9488737
Filing Date: 2016-11-08
CPC Classification: A61B,G01T,H04N

Claim Text:
1. A digital X-ray detector for use in an imaging system, the digital X-ray detector comprising: a linear analog-to-digital converter configured to convert an analog pixel value received from a detector element to a digital pixel value; and an index value source configured to receive the digital pixel value and to generate a digital index value corresponding to the received digital pixel value, the digital index value having a smaller bit-width than the digital pixel value, wherein the index value source comprises a coarse digital comparator configured to generate a coarse digital index value and a fine digital comparator configured to generate a fine digital index value, and wherein the coarse digital comparator is configured to compare a coarse digital reference value with the digital pixel value to determine the coarse digital index value, and the fine digital comparator is configured to compare a fine digital reference value to a calculated weighted difference between the coarse digital index value and the digital pixel value to determine the fine digital index value; wherein the digital X-ray detector is configured to communicate the digital index value to a separate image processing component.