公开(公告)号：US10079984B2

公开(公告)日：2018-09-18

申请号：US15463590

申请日：2017-03-20

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/235 ,  H04N5/3745

CPC分类号： H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US10694122B2

公开(公告)日：2020-06-23

申请号：US16103366

申请日：2018-08-14

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US11252351B2

公开(公告)日：2022-02-15

申请号：US16897339

申请日：2020-06-10

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US10893226B2

公开(公告)日：2021-01-12

申请号：US16434247

申请日：2019-06-07

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Brian Tyrrell ,  Curtis Colonero ,  Robert Berger ,  Kenneth Schultz ,  James Wey ,  Daniel Mooney ,  Lawrence M Candell

IPC分类号： H04N5/378 ,  G11B20/00 ,  H04N5/33 ,  H04N5/77 ,  H04N5/913 ,  H04N21/4223 ,  H04N21/4408 ,  H04L9/06 ,  H04L9/12 ,  G09C1/00 ,  G06F21/60

摘要： A digital focal plane array includes an all-digital readout integrated circuit in combination with a detector array. The readout circuit includes unit cell electronics, orthogonal transfer structures, and data handling structures. The unit cell electronics include an analog to digital converter. Orthogonal transfer structures enable the orthogonal transfer of data among the unit cells. Data handling structures may be configured to operate the digital focal plane array as a data encryptor/decipherer. Data encrypted and deciphered by the digital focal plane array need not be image data.

公开(公告)号：US11632507B2

公开(公告)日：2023-04-18

申请号：US17577867

申请日：2022-01-18

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/235 ,  H04N5/232 ,  H04N5/3745

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US10362254B2

公开(公告)日：2019-07-23

申请号：US15288492

申请日：2016-10-07

申请人： Massachusetts Institute of Technology

发明人： Michael Kelly ,  Brian Tyrrell ,  Curtis Colonero ,  Robert Berger ,  Kenneth Schultz ,  James Wey ,  Daniel Mooney ,  Lawrence Candell

IPC分类号： H01J40/14 ,  H04N5/378 ,  G11B20/00 ,  H04N5/33 ,  H04N5/77 ,  H04N5/913 ,  H04N21/4223 ,  H04N21/4408 ,  G09C1/00 ,  H04L9/06 ,  H04L9/12 ,  G06F21/60

摘要： A digital focal plane array includes an all-digital readout integrated circuit in combination with a detector array. The readout circuit includes unit cell electronics, orthogonal transfer structures, and data handling structures. The unit cell electronics include an analog to digital converter. Orthogonal transfer structures enable the orthogonal transfer of data among the unit cells. Data handling structures may be configured to operate the digital focal plane array as a data encryptor/decipherer. Data encrypted and deciphered by the digital focal plane array need not be image data.

公开(公告)号：US20170208274A1

公开(公告)日：2017-07-20

申请号：US15463590

申请日：2017-03-20

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/235 ,  H04N5/3745

CPC分类号： H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.

公开(公告)号：US09615038B2

公开(公告)日：2017-04-04

申请号：US14995557

申请日：2016-01-14

申请人： Massachusetts Institute of Technology

发明人： Michael W. Kelly ,  Megan H. Blackwell ,  Curtis B. Colonero ,  James Wey ,  Christopher David ,  Justin Baker ,  Joseph Costa

IPC分类号： H04N5/355 ,  H04N5/3745 ,  H04N5/235 ,  H04N5/232

CPC分类号： H04N5/35581 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/2355 ,  H04N5/355 ,  H04N5/35572 ,  H04N5/37455

摘要： When imaging bright objects, a conventional detector array can saturate, making it difficult to produce an image with a dynamic range that equals the scene's dynamic range. Conversely, a digital focal plane array (DFPA) with one or more m-bit counters can produce an image whose dynamic range is greater than the native dynamic range. In one example, the DFPA acquires a first image over a relatively brief integration period at a relatively low gain setting. The DFPA then acquires a second image over longer integration period and/or a higher gain setting. During this second integration period, counters may roll over, possibly several times, to capture a residue modulus 2m of the number of counts (as opposed to the actual number of counts). A processor in or coupled to the DFPA generates a high-dynamic range image based on the first image and the residues modulus 2m.