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：US11313968B2

公开(公告)日：2022-04-26

申请号：US16221301

申请日：2018-12-14

Applicant: Texas Instruments Incorporated

Inventor： Jeffrey Scott Farris

IPC: G01S17/10 ,  G01S7/481 ,  G01S7/484 ,  G01S17/26

Abstract: In described examples, a LIDAR system includes a laser transmitter, a receiver, and first and second light directing elements. The laser transmitter is configured to scan a field of view with a laser beam. The receiver is configured to receive light from the field of view, and to focus a first portion of the received light, corresponding to a region of interest, on a first light directing element. The receiver is also configured to focus a second portion of the received light, corresponding to the field of view except for the region of interest, on multiple second light directing elements. The first light directing element is configured to direct the first portion of the received light towards a first photon detector, and the second light directing elements are configured to direct the second portion of the received light towards a second photon detector.

公开(公告)号：US20170135164A1

公开(公告)日：2017-05-11

申请号：US15410907

申请日：2017-01-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeffrey Scott Farris ,  Michael David McCormick ,  Jason Ryan Thompson

IPC: H05B33/08 ,  H02J7/00 ,  G02B27/01

CPC classification number: H05B33/086 ,  G02B27/01 ,  G02B27/0101 ,  G02B2027/0112 ,  G02B2027/0118 ,  H02J7/0068 ,  H02J7/007 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/089 ,  H05B37/0218 ,  Y10T307/625

Abstract: For controlling a level of luminance produced by a color light-emitting diode (LED) array, a method includes: for a predetermined flux bit-slice period, activating a color enable signal to select a primary color LED and to select a predetermined light flux magnitude set-point; selectively charging an energy storage device and discharging the energy storage device through the selected primary color LED to generate a light flux output during the flux bit-slice period; adjusting a rate of selectively charging the energy storage device to maintain a magnitude of the light flux output at the predetermined light flux magnitude set-point during the flux bit-slice period; and adjusting the predetermined light flux magnitude set-point over the life of the selected LED as the selected LED ages as a function of an anode-to-cathode voltage drop across the selected LED for a given magnitude of current flowing through the selected LED.

公开(公告)号：US09554435B2

公开(公告)日：2017-01-24

申请号：US14030746

申请日：2013-09-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeffrey Scott Farris ,  Michael David McCormick ,  Jason Ryan Thompson

IPC: H05B33/08 ,  G02B27/01

CPC classification number: H05B33/086 ,  G02B27/01 ,  G02B27/0101 ,  G02B2027/0112 ,  G02B2027/0118 ,  H02J7/0068 ,  H02J7/007 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/089 ,  H05B37/0218 ,  Y10T307/625

Abstract: Light flux levels sensed from a color LED array control both current availability to the array and disable/re-enable a current bypass switch to shunt stored-energy current to or away from a selected LED. In continuous mode, a single flux pulse is created for the duration of a pre-established period. Feedback from the flux sensor pulses current to an energy storage device to maintain the light flux at a predetermined set-point. A particular dimming level is achieved by establishing both the pulse period and the flux magnitude. In discontinuous mode, one or more short flux pulses are created. Both the turn-on and the turn-off time of each flux pulse is controlled by alternately removing and then re-establishing a current shunt from the energy storage device to ground. Flux pulse magnitude is controlled by recognizing when the flux pulse has reached a predetermined set-point and re-establishing the current shunt to abruptly turn off current to the selected LED.

Abstract translation: 从彩色LED阵列检测的光通量水平控制阵列的当前可用性，并禁用/重新启用当前旁路开关以将存储的能量电流分流到或远离所选择的LED。 在连续模式下，在预先建立的周期内创建单个磁通脉冲。 来自磁通传感器的反馈脉冲电流到能量存储装置，以将光通量保持在预定的设定点。 通过建立脉冲周期和通量幅度来实现特定的调光水平。 在不连续模式下，产生一个或多个短通量脉冲。 通过从能量存储装置交替地去除并重新建立电流分流到地来控制每个磁通脉冲的导通和关断时间。 通过识别通量脉冲何时达到预定的设定点并且重新建立电流分路以突然关闭所选LED的电流来控制通量脉冲幅度。

公开(公告)号：US20150377442A1

公开(公告)日：2015-12-31

申请号：US14752825

申请日：2015-06-26

Applicant: Texas Instruments Incorporated

Inventor： Vikrant R. Bhakta ,  Jeffrey Scott Farris

IPC: F21S8/10 ,  F21K99/00

CPC classification number: F21S41/141 ,  F21S41/25 ,  F21S41/675

Abstract: An automotive headlamp is provided that includes a digital micromirror device (DMD) headlight module, the DMD headlight module including a DMD, a white light module to provide a white light beam to illuminate the DMD, illumination optics optically coupled between the DMD and the white light module to prepare the white light beam for illuminating the DMD, and projection optics optically coupled to the DMD to receive pixelated light reflected by the DMD and project a pixelated light beam on road, in which at least one of the DMD, the white light module, and the illumination optics shape a beam profile of the white light beam such that the light reflected by the DMD has a pixelated non-uniform beam profile suitable for projecting a white light beam that forms a portion of a white light beam of the headlamp.

Abstract translation: 提供了一种汽车前照灯，其包括数字微镜装置（DMD）头灯模块，DMD头灯模块包括DMD，提供白光束以照亮DMD的白光模块，光耦合在DMD和白色之间的照明光学元件 光模块以准备用于照亮DMD的白光束，以及光学耦合到DMD的投影光学元件，以接收由DMD反射的像素化光并在道路上投影像素化光束，其中至少一个DMD，白光 模块，并且照明光学器形成白光束的光束轮廓，使得由DMD反射的光具有适于投射白光束的像素化不均匀的光束轮廓，所述白色光束形成前照灯的白光束的一部分 。

公开(公告)号：US20140085731A1

公开(公告)日：2014-03-27

申请号：US14030746

申请日：2013-09-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jeffrey Scott Farris ,  Michael David McCormick ,  Jason Ryan Thompson

IPC: H05B33/08 ,  G02B27/01

CPC classification number: H05B33/086 ,  G02B27/01 ,  G02B27/0101 ,  G02B2027/0112 ,  G02B2027/0118 ,  H02J7/0068 ,  H02J7/007 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/089 ,  H05B37/0218 ,  Y10T307/625

Abstract: Light flux levels sensed from a color LED array control both current availability to the array and disable/re-enable a current bypass switch to shunt stored-energy current to or away from a selected LED. In continuous mode, a single flux pulse is created for the duration of a pre-established period. Feedback from the flux sensor pulses current to an energy storage device to maintain the light flux at a predetermined set-point. A particular dimming level is achieved by establishing both the pulse period and the flux magnitude. In discontinuous mode, one or more short flux pulses are created. Both the turn-on and the turn-off time of each flux pulse is controlled by alternately removing and then re-establishing a current shunt from the energy storage device to ground. Flux pulse magnitude is controlled by recognizing when the flux pulse has reached a predetermined set-point and re-establishing the current shunt to abruptly turn off current to the selected LED.

Abstract translation: 从彩色LED阵列检测的光通量水平控制阵列的当前可用性，并禁用/重新启用当前旁路开关以将存储的能量电流分流到或远离所选择的LED。 在连续模式下，在预先建立的周期内创建单个磁通脉冲。 来自磁通传感器的反馈脉冲电流到能量存储装置，以将光通量保持在预定的设定点。 通过建立脉冲周期和通量幅度来实现特定的调光水平。 在不连续模式下，产生一个或多个短通量脉冲。 通过从能量存储装置交替地去除并重新建立电流分流到地来控制每个磁通脉冲的导通和关断时间。 通过识别通量脉冲何时达到预定的设定点并且重新建立电流分路以突然关闭所选LED的电流来控制通量脉冲幅度。