公开(公告)号：US20210312885A1

公开(公告)日：2021-10-07

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

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：US20170126219A1

公开(公告)日：2017-05-04

申请号：US14927949

申请日：2015-10-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mohammad ELBADRY ,  Robert Floyd PAYNE ,  Gerd Schuppener

IPC: H03K5/156 ,  H02M3/07

CPC classification number: H03K5/1565 ,  H02M3/07

Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.