公开(公告)号：US11280907B2

公开(公告)日：2022-03-22

申请号：US16235338

申请日：2018-12-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeffrey Matthew Kempf ,  Vikrant R. Bhakta ,  Jeffrey Scott Farris

IPC: G01S17/89 ,  G01S17/42 ,  G02B27/28 ,  G02B5/28 ,  H04N13/254 ,  H04N13/218

Abstract: A depth imaging system includes an optical image sensor, an optical beam steering system, an object identification system, and a depth measurement system. The object identification system is coupled to the optical image sensor. The object identification system is configured to identify an object in an image captured by the optical image sensor. The depth measurement system is coupled to the optical beam steering device. The depth measurement system is configured to, responsive to identification of the object by the object identification system: direct an optical signal, via the optical beam steering device, to the object, and to determine a distance to the object based on a time-of-flight of the optical signal.

公开(公告)号：US20220086408A1

公开(公告)日：2022-03-17

申请号：US17174056

申请日：2021-02-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shashank Dabral ,  Jaime Rene De La Cruz Vasquez ,  Jeffrey Matthew Kempf

IPC: H04N9/31 ,  H04N5/232 ,  G03B21/26

Abstract: Described examples include a system including a projector configured to project a test pattern image, the test pattern image having at least two elements; a camera configured to capture the test pattern image; and a controller coupled to the projector and to the camera. The controller is configured to obtain a first calibration matrix between the projector and the camera for the at least two elements; determine at least two epipolar lines based on the first calibration matrix and the test pattern image; determine a cost function based on the at least two epipolar lines and the at least two elements in the test pattern image as captured by the camera; and determine a second calibration matrix responsive to the cost function, wherein at least one of a camera position of the camera or a projector position of the projector is adjusted responsive to the second calibration matrix.

公开(公告)号：US10798346B2

公开(公告)日：2020-10-06

申请号：US15913556

申请日：2018-03-06

Applicant: Texas Instruments Incorporated

Inventor： Dan Morgan ,  Jeffrey Matthew Kempf

IPC: H04N9/31

Abstract: In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.

公开(公告)号：US10778945B1

公开(公告)日：2020-09-15

申请号：US16288266

申请日：2019-02-28

Applicant: Texas Instruments Incorporated

Inventor： Jeffrey Matthew Kempf ,  Alan Scott Hearn

IPC: H04N9/30 ,  H04N9/31 ,  G02B26/08

Abstract: A word data loading circuit for a spatial light modulator includes a shadow load register (SLR), a load controller, and a word pattern generation (WPG) circuit. The SLR loads a first word of a pseudorandom image pattern. The load controller parallel shifts the first word to a memory cell array. The WPG circuit generates a next word and controls the SLR to change the first word to the next word. The load controller parallel shifts the next word to the array. The WPG circuit generates an additional word and controls the SLR to change the next word to the additional word. The load controller parallel shifts the additional word to the array. The WPG circuit, SLR, and load controller generate and parallel shift further additional words to the array until the pseudorandom image pattern is loaded in the array.

公开(公告)号：US20200045274A1

公开(公告)日：2020-02-06

申请号：US16050697

申请日：2018-07-31

Applicant: Texas Instruments Incorporated

Inventor： Vikrant R. Bhakta ,  Jeffrey Matthew Kempf

IPC: H04N9/31 ,  H04N5/225 ,  H04N5/74

Abstract: Described examples include an optical apparatus having a first lens, a first optical element having a first aperture, a second lens, and a second optical element having a second aperture. The optical apparatus includes a third lens having a first portion to receive projected light from the first lens through the first aperture and to project the projected light onto a target. Also, the third lens has a second portion to receive reflected light reflected from the target and to provide the reflected light to the second lens through the second aperture.

公开(公告)号：US20180199014A1

公开(公告)日：2018-07-12

申请号：US15913556

申请日：2018-03-06

Applicant: Texas Instruments Incorporated

Inventor： Dan Morgan ,  Jeffrey Matthew Kempf

IPC: H04N9/31

Abstract: In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.

公开(公告)号：US09930303B1

公开(公告)日：2018-03-27

申请号：US15351308

申请日：2016-11-14

Applicant: Texas Instruments Incorporated

Inventor： Dan Morgan ,  Jeffrey Matthew Kempf

IPC: H04N9/31

CPC classification number: H04N9/3123 ,  H04N9/3155 ,  H04N9/3164 ,  H04N9/3179

Abstract: In described examples, a method includes: receiving an array of image data pixels for display by a spatial light modulator; dividing the array of image data pixels into a plurality of blocks. For the blocks of the plurality of blocks, the method includes: computing a mean value for pixels in the block; computing a variance for pixels in the block; and, in response to the mean value and the variance, retrieving an indicator of a likelihood of a visible artifact for the block; and in response to the retrieved indicator, outputting a signal to selectively increase or reduce a load time of the spatial light modulator for displaying the array of image data pixels.

公开(公告)号：US11705089B2

公开(公告)日：2023-07-18

申请号：US17224399

申请日：2021-04-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Robert Floyd Payne ,  Harsh Dinesh Jhaveri ,  Jeffrey Matthew Kempf

IPC: G09G5/10 ,  G02B27/01 ,  G02B26/08

CPC classification number: G09G5/10 ,  G02B27/0172 ,  G02B2027/014 ,  G09G2320/0646

Abstract: A system includes a spatial light modulator (SLM) configured to project an image. The system also includes a controller coupled to the SLM. The controller is configured to receive the image and determine a brightness level of the image. The controller is also configured to enforce a brightness limit on the image responsive to the brightness level, to produce a reduced image. The controller is configured to instruct a display to display the reduced image.

公开(公告)号：US11513361B2

公开(公告)日：2022-11-29

申请号：US17008902

申请日：2020-09-01

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kevin Ross Tomei ,  Jeffrey Matthew Kempf ,  Jeffrey Scott Farris

IPC: G09G5/00 ,  G02B27/01 ,  G09G3/20 ,  G09G5/395 ,  G09G5/36

Abstract: A method includes converting a frame of pixel data to a first frame division unit. The method further includes, responsive to an X,Y coordinate, cropping and shifting the frame division unit to produce a second frame division unit. The method also includes outputting the second frame division unit.

公开(公告)号：US11487118B2

公开(公告)日：2022-11-01

申请号：US17122040

申请日：2020-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeffrey Matthew Kempf ,  John Peter Fenske

IPC: G02B27/01 ,  G09G5/391

Abstract: A method includes rendering, by at least one processor, a first sub-frame of an image, where the first sub-frame includes a first subset of pixels of the image. The method includes displaying the first sub-frame on a display. The method also includes rendering, by the at least one processor, a second sub-frame of the image, where the second sub-frame includes a second subset of pixels of the image, and where the second sub-frame is shifted a half-pixel diagonally from the first sub-frame. The method also includes displaying the second sub-frame on the display after displaying the first sub-frame, where the display is optically shifted a half-pixel diagonally to display the second sub-frame.