Video display device with strobe effect

Patent metadata

Field	Value
Publication number	US-10951836-B2
Application number	US-201514720694-A
Country	US
Kind code	B2
Filing date	May 22, 2015
Priority date	Jun 5, 2014
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A video display device comprises an arrangement of light sources for displaying video content. Further, the video display device comprises a controller that is configured to control the light sources to display the video content. Further, the controller is configured to control the light sources according to strobe control information to perform a strobe effect by periodically switching the light sources between a first state and a second state, e.g., between a state of low brightness and a state of high brightness.

First claim

We claim:

1. A video display device, comprising:
an arrangement of light sources, wherein the light sources are individually-controllable;
an interface configured to receive video content and strobe control information that indicates a first frequency at which the light sources should be switched between a first state and a second state, wherein the first frequency indicated in the strobe control information is independent of a frame rate of the video content; and
a controller configured to control individual light sources within the arrangement of light sources to display the video content according to the strobe control information, wherein one or more light sources included in the arrangement of light sources are assigned to represent each individual pixel of the video content, wherein the controller is further configured to cause a strobe light effect to be displayed by periodically switching one or more of the individual light sources between the first state and the second state at the first frequency, wherein the strobe light effect produces flashes that are visually perceptible to a viewer, and wherein the first frequency is included in a range of frequencies such that switching the one or more of the individual light sources between the first state and the second state at the first frequency produces the flashes that are visually perceptible to the viewer,
wherein, in the first state, light emissions by the individual light sources are controlled to display a frame corresponding to the video content, and in the second state, light emissions by the individual light sources are controlled based on a level that is defined independently of the video content.

2. The video display device according to claim 1 , wherein the level corresponds to a minimum brightness value.

3. The video display device according to claim 1 , wherein the level corresponds to a maximum brightness value.

4. The video display device according to claim 1 , wherein the first frequency of periodically switching the individual light sources between the first state and the second state is greater than the frame rate of the video content.

5. The video display device according to claim 1 , wherein the interface is configured to receive the video content in a sequence of one or more pixel data packets, and the strobe control information is included in one or more of the pixel data packets.

6. The video display device according to claim 1 , wherein the strobe control information indicates at least one of a start and an end of periodically switching the individual light sources between the first state and the second state.

7. The video display device according to claim 1 , wherein the strobe control information indicates a duration of time for maintaining the individual light sources in at least one of the first state and the second state.

8. A video controller, comprising:
an interface for at least one video display device that includes an arrangement of light sources for displaying video content, wherein the light sources are individually-controllable,
wherein the interface is configured to send the video content and strobe control information that indicates a first frequency at which the light sources should be switched between a first state and a second state to the at least one video display device, wherein the first frequency indicated in the strobe control information is independent of a frame rate of the video content, wherein the at least one video display device causes the video display device to control individual light sources within the arrangement of light sources to produce a strobe light effect to be displayed by periodically switching one or more of the individual light sources between the first state and the second state at the first frequency, wherein the strobe light effect produces flashes that are visually perceptible to a viewer, wherein one or more light sources included in the arrangement of light sources are assigned to represent each individual pixel of the video content, and wherein the first frequency is included in a range of frequencies such that switching the one or more of the individual light sources between the first state and the second state at the first frequency produces the flashes that are visually perceptible to the viewer,
wherein, in the first state, light emissions by the individual light sources are controlled to display a frame corresponding to the video content, and in the second state, light emissions by the individual light sources are controlled based on a level that is defined independently of the video content.

9. The video controller according to claim 8 , wherein the interface is configured to send the video content in a sequence of data packets, and the strobe control information is included in one or more of the data packets.

10. A system, comprising:
at least one video display device that includes an arrangement of light sources for displaying video content, wherein the light sources are individually-controllable, and an interface configured to receive the video content and strobe control information that indicates a first frequency at which the light sources should be switched between a first state and a second state, wherein the first frequency indicated in the strobe control information is independent of a frame rate of the video content, wherein the at least one video display device is configured to control individual light sources within the arrangement of light sources to display the video content according to the strobe control information, wherein one or more light sources included in the arrangement of light sources are assigned to represent each individual pixel of the video content, wherein the at least one video display device is further configured to produce a strobe light effect to be displayed by periodically switching one or more of the individual light sources between the first state and the second state at the first frequency, wherein the strobe light effect produces flashes that are visually perceptible to a viewer, and wherein the first frequency is included in a range of frequencies such that switching the one or more of the individual light sources between the first state and the second state at the first frequency produces the flashes that are visually perceptible to the viewer; and
a video controller configured to send the strobe control information to the at least one video display device,
wherein, in the first state, light emissions by the individual light sources are controlled to display a frame corresponding to the video content, and in the second state, light emissions by the individual light sources are controlled based on a level that is defined independently of the video content.

11. A method for controlling a video display device, comprising:
receiving video content and strobe control information that indicates a first frequency at which light sources should be switched between a first state and a second state, wherein the first frequency indicated in the strobe control information is independent of a frame rate of the video content;
controlling an arrangement of light sources of the video display device to display the video content, wherein the light sources are individually-controllable, and wherein one or more light sources included in the arrangement of light sources are assigned to represent each individual pixel of the video content; and
according to the strobe control information, controlling individual light sources within the arrangement of light sources to perform a strobe light effect to be displayed by periodically causing one or more of the individual light sources to switch between the first state and the second state at the first fr

Assignees

• Martin Professional Aps
• Harman Professional Denmark Aps

Inventors

• Verlinden Wouter
• Allan Simon

Classifications

• G09G3/32 Primary

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• H04N5/2625 Primary

  for obtaining an image which is composed of images from a temporal image sequence, e.g. for a stroboscopic effect (sequence generated by event triggered capturing H04N7/188) · CPC title

• H04N21/440281

  by altering the temporal resolution, e.g. by frame skipping (television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783) · CPC title

• H04N21/4316

  for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window · CPC title

• H04N21/4312

  involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations · CPC title