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公开(公告)号：US11284050B1
公开(公告)日：2022-03-22
申请号：US17174056
申请日：2021-02-11
Applicant: TEXAS INSTRUMENTS INCORPORATED
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.
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Patent Agency Ranking
公开(公告)号：US20200280705A1
公开(公告)日：2020-09-03
申请号：US16288266
申请日：2019-02-28
Applicant: Texas Instruments Incorporated
Inventor： Jeffrey Matthew Kempf , Alan Scott Hearn
IPC: H04N9/31
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.
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公开(公告)号：US10032402B2
公开(公告)日：2018-07-24
申请号：US14803439
申请日：2015-07-20
Applicant: Texas Instruments Incorporated
Inventor： Jeffrey Matthew Kempf
Abstract: System, method, and device for maximizing brightness of solid-state illuminators while minimizing power usage based on individual scene contents. An embodiment varies power to each of the solid-state illuminators (red, green, & blue) based on the scene content that is being displayed optimizing the non-linear brightness response of solid-state illuminators.
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公开(公告)号：US20170339383A1
公开(公告)日：2017-11-23
申请号：US15672035
申请日：2017-08-08
Applicant: Texas Instruments Incorporated
Inventor： Jeffrey Matthew Kempf
IPC: H04N9/31
CPC classification number: H04N9/3185 , H04N9/3105 , H04N9/3111 , H04N9/3123 , H04N9/3182
Abstract: For an example method of reducing diffraction artifacts in a displayed image from a digital image projection system, a digital controller is coupled to a spatial light modulator. The spatial light modulator includes a two dimensional array of pixels. The method includes receiving signals containing pixel image data and processing the pixel image data to determine a desired gray scale for a pixel. The desired gray scale is compared to achievable gray scales of the digital image projection system. An upper bounding achievable gray scale is determined, and a lower bounding achievable gray scale is determined. Also, a dithering percentage for the desired gray scale is determined. The method chooses one of the upper bounding achievable gray scale and the lower bounding achievable gray scale. Also, a modified lower bounding gray scale is chosen to reduce the dithering percentage.
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公开(公告)号：US09743055B1
公开(公告)日：2017-08-22
申请号：US15134054
申请日：2016-04-20
Applicant: Texas Instruments Incorporated
Inventor： Jeffrey Matthew Kempf
IPC: H04N9/31
CPC classification number: H04N9/3185 , H04N9/3105 , H04N9/3111 , H04N9/3123 , H04N9/3182
Abstract: For an example method of reducing diffraction artifacts in a displayed image from a digital image projection system, a digital controller is coupled to a spatial light modulator. The spatial light modulator includes a two dimensional array of pixels. The method includes receiving signals containing pixel image data and processing the pixel image data to determine a desired gray scale for a pixel. The desired gray scale is compared to achievable gray scales of the digital image projection system. An upper bounding achievable gray scale is determined, and a lower bounding achievable gray scale is determined. Also, a dithering percentage for the desired gray scale is determined. The method chooses one of the upper bounding achievable gray scale and the lower bounding achievable gray scale. Also, a modified lower bounding gray scale is chosen to reduce the dithering percentage.
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公开(公告)号：US09589514B2
公开(公告)日：2017-03-07
申请号：US14626045
申请日：2015-02-19
Applicant: Texas Instruments Incorporated
Inventor： Todd Alan Clatanoff , Jeffrey Matthew Kempf
CPC classification number: G09G3/36 , H04N9/3111 , H04N9/3179
Abstract: Methods and apparatus for reduced bandwidth pulse width modulation are disclosed. A system includes a digital controller circuit coupled to a data interface, the digital controller circuit configured to receive image data for display and further configured to encode line data for transmission to a spatial light modulator using a data compression scheme; and the spatial light modulator coupled to the data interface and configured to receive encoded data and to decode the encoded data to produce unencoded data corresponding to pixel data for display on an array of pixel elements in the spatial light modulator; wherein data transmitted from the digital controller circuit to the spatial light modulator further comprises encoded data that is formed from bit planes using a data compression scheme to form partial lines of data. Additional methods and apparatus are disclosed.
Abstract translation: 公开了用于减小带宽脉宽调制的方法和装置。 一种系统包括耦合到数据接口的数字控制器电路，所述数字控制器电路被配置为接收用于显示的图像数据，并且还被配置为编码线数据以便使用数据压缩方案传输到空间光调制器; 并且所述空间光调制器耦合到所述数据接口并且被配置为接收编码数据并解码所述编码数据以产生对应于像素数据的未编码数据，以在所述空间光调制器中的像素阵列阵列上显示; 其中从数字控制器电路发送到空间光调制器的数据还包括使用数据压缩方案由位平面形成的编码数据，以形成部分数据线。 公开了附加的方法和装置。
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