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公开(公告)号：US20230181134A1
公开(公告)日：2023-06-15
申请号：US17644201
申请日：2021-12-14
Applicant: BAE SYSTEMS IMAGING SOLUTIONS INC.
Inventor： Stanley K. Searing , Kwang Bo Cho , Hung T. Do , Stephen W. Mims , Marc K. Thacher , Bruce E. Willy , Glen L. Collier , Douglas W. Teeter , George Y. Wang
CPC classification number: A61B6/145 , G06T7/0012 , A61B6/5258 , G01T1/17 , A61B6/56 , A61B6/54 , A61B6/4233 , G06T2207/30168 , G06T2207/30036 , G06T2207/10116
Abstract: Techniques are provided for x-ray image data monitoring and signaling for patient safety. A methodology implementing the techniques according to an embodiment includes integrating energy associated with a received x-ray pulse at an array of pixels. The method also includes multiplexing a readout of the integrated energy from the array of pixels, as analog signals, into channels, and performing analog to digital conversion of the analog signals of the channels into digital signals. The method further includes generating an error indicator in response to determining that a calculated mean of the digital signals is either greater than an upper threshold value associated with saturation or less than a lower threshold value associated with underexposure. The method further includes transmitting the error indicator over a Universal Serial Bus, to an imaging system, to terminate transmission of further x-ray pulses.
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公开(公告)号：US20230181133A1
公开(公告)日：2023-06-15
申请号：US17550856
申请日：2021-12-14
Applicant: BAE Systems Imaging Solutions Inc.
Inventor： Stanley K. Searing , Marc K. Thacher , Kwang Bo Cho , Hung T. Do , Stephen W. Mims , Bruce E. Willy , Glen L. Collier , Douglas W. Teeter , George Y. Wang
Abstract: Techniques are provided for x-ray sensing for intraoral tomography. A methodology implementing the techniques according to an embodiment includes detecting an x-ray pulse based on energy received at one or more pixels of a pixel array. The method also includes integrating the energy received at each of the pixels of the array of pixels, in response to the detection, wherein the energy received at each of the pixels is associated with the x-ray pulse. The method further includes multiplexing readouts of analog signals from the array of pixels into two or more parallel channels. The method further includes simultaneously converting (or otherwise in parallel) the analog signals of each of the channels into digital signals and storing the digital signals in memory as frames of data. The method may further include, for example, transmitting the frames of data from the memory, over a Universal Serial Bus, to an imaging system.
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Patent Agency Ranking
公开(公告)号：US12126928B2
公开(公告)日：2024-10-22
申请号：US18147903
申请日：2022-12-29
Applicant: BAE Systems Imaging Solutions Inc.
Inventor： Hung T. Do , Khai Nguyen , Alexander Lu , Stephen W. Mims , Kwang Bo Cho , Angel Rogelio Lopez
IPC: H04N25/78
CPC classification number: H04N25/78
Abstract: Examples include column readout amplifiers and image sensors including same. In one example, a column readout amplifier includes a signal amplifier having an amplifier output and first and second amplifier inputs, a filter capacitor having first and second terminals, the second terminal connected to a ground terminal, a buffer amplifier having a buffer amplifier input and a buffer amplifier output, a switching network configured to switchably connect the amplifier output to the buffer amplifier input and the buffer amplifier output to the first terminal of the filter capacitor during a first time period, and to switchably connect the amplifier output directly to the first terminal of the filter capacitor during a second time period, and a low-pass filter connected in a feedback path of the signal amplifier between the amplifier output and the first amplifier input, the low-pass filter including a series resistor and a capacitor.
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公开(公告)号：US20240196115A1
公开(公告)日：2024-06-13
申请号：US18063885
申请日：2022-12-09
Applicant: BAE Systems Imaging Solutions Inc.
Inventor： Hung Trong Do , Khai Nguyen , Stephen W. Mims , Alexander Lu , Kwang Bo Cho , Angel Rogelio Lopez
IPC: H04N25/768 , H03F3/45 , H04N25/78
CPC classification number: H04N25/768 , H03F3/45269 , H04N25/78
Abstract: Examples include an image sensor comprising a pixel array having at least one column of addressable pixel sensors, and a column amplifier coupled to the at least one column of addressable pixel sensors, the column amplifier comprising a transistor bank including a plurality of transistors, and mode select circuitry coupled to the transistor bank and configured to establish one or more connections among the plurality of transistors to configure the column amplifier to operate in one of a differential mode of operation and a single-ended mode of operation.
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公开(公告)号：US12133755B2
公开(公告)日：2024-11-05
申请号：US17644201
申请日：2021-12-14
Applicant: BAE SYSTEMS IMAGING SOLUTIONS INC.
Inventor： Stanley K. Searing , Kwang Bo Cho , Hung T. Do , Stephen W. Mims , Marc K. Thacher , Bruce E. Willy , Glen L. Collier , Douglas W. Teeter , George Y. Wang
Abstract: Techniques are provided for x-ray image data monitoring and signaling for patient safety. A methodology implementing the techniques according to an embodiment includes integrating energy associated with a received x-ray pulse at an array of pixels. The method also includes multiplexing a readout of the integrated energy from the array of pixels, as analog signals, into channels, and performing analog to digital conversion of the analog signals of the channels into digital signals. The method further includes generating an error indicator in response to determining that a calculated mean of the digital signals is either greater than an upper threshold value associated with saturation or less than a lower threshold value associated with underexposure. The method further includes transmitting the error indicator over a Universal Serial Bus, to an imaging system, to terminate transmission of further x-ray pulses.
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公开(公告)号：US20240223920A1
公开(公告)日：2024-07-04
申请号：US18147903
申请日：2022-12-29
Applicant: BAE Systems Imaging Solutions Inc.
Inventor： Hung T. Do , Khai Nguyen , Alexander Lu , Stephen W. Mims , Kwang Bo Cho , Angel Rogelio Lopez
IPC: H04N25/78
CPC classification number: H04N25/78
Abstract: Examples include column readout amplifiers and image sensors including same. In one example, a column readout amplifier includes a signal amplifier having an amplifier output and first and second amplifier inputs, a filter capacitor having first and second terminals, the second terminal connected to a ground terminal, a buffer amplifier having a buffer amplifier input and a buffer amplifier output, a switching network configured to switchably connect the amplifier output to the buffer amplifier input and the buffer amplifier output to the first terminal of the filter capacitor during a first time period, and to switchably connect the amplifier output directly to the first terminal of the filter capacitor during a second time period, and a low-pass filter connected in a feedback path of the signal amplifier between the amplifier output and the first amplifier input, the low-pass filter including a series resistor and a capacitor.
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公开(公告)号：US11911197B2
公开(公告)日：2024-02-27
申请号：US17550856
申请日：2021-12-14
Applicant: BAE Systems Imaging Solutions Inc.
Inventor： Stanley K. Searing , Marc K. Thacher , Kwang Bo Cho , Hung T. Do , Stephen W. Mims , Bruce E. Willy , Glen L. Collier , Douglas W. Teeter , George Y. Wang
Abstract: Techniques are provided for x-ray sensing for intraoral tomography. A methodology implementing the techniques according to an embodiment includes detecting an x-ray pulse based on energy received at one or more pixels of a pixel array. The method also includes integrating the energy received at each of the pixels of the array of pixels, in response to the detection, wherein the energy received at each of the pixels is associated with the x-ray pulse. The method further includes multiplexing readouts of analog signals from the array of pixels into two or more parallel channels. The method further includes simultaneously converting (or otherwise in parallel) the analog signals of each of the channels into digital signals and storing the digital signals in memory as frames of data. The method may further include, for example, transmitting the frames of data from the memory, over a Universal Serial Bus, to an imaging system.
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