公开(公告)号：US12056551B2

公开(公告)日：2024-08-06

申请号：US17623366

申请日：2020-06-08

Applicant: NEC Platforms, Ltd.

Inventor： Fujio Okumura

IPC: G06K7/14 ,  G06K19/07

CPC classification number: G06K19/0707 ,  G06K7/1452

Abstract: A display system includes a plurality of tags and a detection device. Each tag of the plurality of tags stores an identification code for identifying that tag, generates electric power upon receiving light that contains identification information to be compared with the identification code, and emits light using the electric power of that tag when the identification information contained in the received light matches the identification code. The detection device generates image data in accordance with an input of the identification information on a selected article, projects scanning light containing identification information on the position of the tag extracted from the generated image data, and, when emitted light from any of the plurality of tags is detected from the image data acquired during a period in which the scanning light is projected, projects marking light within a range attached with the tag that has emitted light.

公开(公告)号：US11557233B2

公开(公告)日：2023-01-17

申请号：US17419070

申请日：2020-02-19

Applicant: NEC Platforms, Ltd.

Inventor： Fujio Okumura

IPC: G09G3/00 ,  G06T7/73 ,  G02B27/01 ,  G06F3/01 ,  H04N13/239 ,  G09G3/3208

Abstract: An information display system includes a frame, a pair of cameras arranged at both side ends of the frame, a transparent display fitted into the frame, a display position setting device that detects a target based on a feature extracted from image data captured by the pair of cameras, and sets, as a display position, a position at which a straight line connecting an eye of a user wearing the frame and the target passes through the transparent display, and a controller that controls the transparent display in such a way as to display a point light at the display position set by the display position setting device.

公开(公告)号：US12063459B2

公开(公告)日：2024-08-13

申请号：US17781442

申请日：2020-11-10

Applicant: NEC Platforms, Ltd.

Inventor： Fujio Okumura

IPC: H04N9/31 ,  H04B10/116 ,  H04B10/58

CPC classification number: H04N9/3155 ,  H04B10/116 ,  H04B10/58 ,  H04N9/3182

Abstract: A light transmitting device that includes a light transmitter that transmits a spatial light signal including a communication signal, and a light transmission control unit that adds a dummy signal having a same brightness as a ghost image of the communication signal to the spatial light signal and controls the light transmitter in such a way that the dummy signal is displayed at a position of the ghost image.

公开(公告)号：US12163881B2

公开(公告)日：2024-12-10

申请号：US17780119

申请日：2020-11-09

Applicant: NEC Platforms, Ltd.

Inventor： Fujio Okumura

IPC: G01N21/35 ,  G01J3/02 ,  G01J3/42 ,  G01N21/3504

Abstract: A gas detection that includes a projector including a light source that emits laser light having a wavelength at which an absorption rate by a detection target gas is high and a spatial light modulator that modulates the laser light emitted from the light source, a projection control unit that controls projection light to be projected toward a retroreflector by causing the light source to emit the laser light and setting a pattern of a modulation part of the spatial light modulator, a light receiver that receives reflected light of the projection light reflected by the retroreflector and measures an intensity of the received reflected light; and a leakage determination unit that acquires the intensity of the reflected light from the light receiver and determines leakage of the detection target gas in a detection space with the retroreflector based on the intensity of the reflected light.