POV display device and control method therefor

Patent metadata

Field	Value
Publication number	US-11908357-B2
Application number	US-202017916915-A
Country	US
Kind code	B2
Filing date	Apr 23, 2020
Priority date	Apr 23, 2020
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

The present invention provides a persistence of vision (POV) display device using a light emitting element, the display device comprising: a fixed module including a motor; a rotating module located on the fixed module and rotated by the motor; at least one panel coupled to the rotating module; a plurality of light sources arranged on the panel and having a plurality of pixels; a light source module including a light emitting element array in which the plurality of light sources are arranged in a longitudinal direction; memory that stores video data received from an external source device; and a controller that controls the order of input of the video data and the order of output of the video data.

First claim

What is claimed is:

1. A persistence of vision (POV) display device comprising:
a fixed module including a motor;
a rotatable module positioned on the fixed module and configured to be rotated by the motor;
at least one panel coupled to the rotatable module;
a plurality of light sources arranged on the panel and constituting a plurality of pixels;
a light source including a light emitting element array having the plurality of light sources arranged in a longitudinal direction;
a memory configured to store video data received from an external source device; and
a controller,
wherein the panel includes a plurality of panels and the memory includes a plurality of memories, and the controller is configured to:
receive video data from an external source device, the video data comprised of a plurality of video frames,
based on a number of the plurality of panels and a display order of the plurality of panels, divide the video data by dividing individual video frames of the video data to create a plurality of video frame portions for each video frame,
wherein a number plurality of video frame portions for each video frame is equal to the number of the plurality of panels,
for all video frames of the divided video data, controllably input the respective plurality of video frame portions into respective ones of the plurality of memories in parallel with each other or in data packet units,
for all video frames of the divided video data, controllably output the respective plurality of video frame portions from respective ones of the plurality of memories,
wherein, for all video frames of the divided video data, an order in which the divided data are input to the memory and an order in which the divided data are output from the memory is controlled so as to allow an image to be converted only at a time point of frame conversion.

2. A method for controlling a persistence of vision (POV) display device, wherein the POV display device includes a fixed module including a motor, a rotatable module positioned on the fixed module and configured to be rotated by the motor, at least one panel coupled to the rotatable module, a plurality of light sources arranged on the panel and constituting a plurality of pixels, a light source including a light emitting element array having the plurality of light sources arranged in a longitudinal direction, a memory configured to store video data received from an external source device, and a controller, wherein the panel includes a plurality of panels and the memory includes a plurality of memories, the method comprising:
receiving video data from an external source device, the video data comprised of a plurality of video frames;
based on a number of the plurality of panels and a display order of the plurality of panels, dividing the video data by dividing individual video frames of the video data to create a plurality of video frame portions for each video frame,
wherein a number plurality of video frame portions for each video frame is equal to the number of the plurality of panels;
for all video frames of the divided video data, controllably inputting the respective plurality of video frame portions into respective ones of the plurality of memories in parallel with each other or in data packet units; and
for all video frames of the divided video data, controllably outputting the respective plurality of video frame portions from respective ones of the plurality of memories,
wherein, for all video frames of the divided video data, an order in which the divided data are input to the memory and an order in which the divided data are output from the memory is controlled so as to allow an image to be converted only at a time point of frame conversion.

Assignees

• Lg Electronics Inc

Inventors

• Lee Kyungho
• Lee Jaewoon
• Kim Eungdoo

Classifications

• H10W90/00

  Package configurations · CPC title

• G09G3/005 Primary

  forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation · CPC title

• H01L25/0753

  Electricity · mapped topic

• H01L25/167

  Electricity · mapped topic

• G09G2360/12

  Frame memory handling · CPC title