US 12,133,755 B2
X-ray image data monitoring and signaling for patient safety
Stanley K. Searing, San Jose, CA (US); Kwang Bo Cho, San Jose, CA (US); Hung T. Do, San Jose, CA (US); Stephen W. Mims, San Diego, CA (US); Marc K. Thacher, San Diego, CA (US); Bruce E. Willy, Watsonville, CA (US); Glen L. Collier, Morgan Hill, CA (US); Douglas W. Teeter, Scotts Valley, CA (US); and George Y. Wang, San Jose, CA (US)
Assigned to BAE Systems Imaging Solutions Inc., San Jose, CA (US)
Filed by BAE SYSTEMS IMAGING SOLUTIONS INC., San Jose, CA (US)
Filed on Dec. 14, 2021, as Appl. No. 17/644,201.
Prior Publication US 2023/0181134 A1, Jun. 15, 2023
Int. Cl. A61B 6/51 (2024.01); A61B 6/00 (2006.01); A61B 6/42 (2024.01); G01T 1/17 (2006.01); G06T 7/00 (2017.01)
CPC A61B 6/512 (2024.01) [A61B 6/4233 (2013.01); A61B 6/5258 (2013.01); A61B 6/54 (2013.01); A61B 6/56 (2013.01); G01T 1/17 (2013.01); G06T 7/0012 (2013.01); G06T 2207/10116 (2013.01); G06T 2207/30036 (2013.01); G06T 2207/30168 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An intraoral x-ray sensor safety system comprising:
an array of pixels configured to integrate energy associated with a received x-ray pulse;
a multiplexer configured to readout the integrated energy from the array of pixels, as analog signals, into two or more channels;
two or more analog to digital converter (ADC) circuits configured to perform conversion of the analog signals of the channels into digital signals, such that each ADC receives the analog signal of a corresponding one of the channels;
a data quality measurement circuit configured to generate an error indicator in response to determining that a calculated mean of the digital signals is either greater than an upper threshold value or less than a lower threshold value,
wherein the data quality measurement circuit is configured to calculate the mean by summing the digital signals, subtracting a dark background offset value from the sum, and dividing by a count of active pixels in the array of pixels.