Digital display device with dual refresh frequency

Abstract

To provide a digital display device having a dual refresh frequency.SOLUTION: The digital display device comprises a controller and a two-dimension digital pixel panel. The pixels of the two-dimension digital pixel panel are divided into a first pixel group and a second pixel group. The controller is configured to operate the first group of pixels at a first refresh frequency (F1) and to operate the second group of pixels at a second refresh frequency (F1) different from F2. The controller may support two display channels, a first display channel providing image date to the first group of pixels in the F1 and a second display channel providing image date to the second group of pixels in the F2. The first pixel group and the second pixel group are alternately interlaced.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to the field of digital display devices, and more particularly, to a digital display device with dual refresh frequencies. [Background technology]

[0002] Digital displays are common in modern consumer electronic devices, with the ability to address and manipulate individual pixels on the display. Images on digital displays are refreshed at a fixed frequency, e.g., 60 Hz, 120 Hz, or 144 Hz.

[0003] Recent research suggests that using two visible light sources operating at different frequencies can produce invisible flicker at a difference frequency equal to the difference between the two frequencies. By appropriately choosing the difference frequency (e.g., 40 Hz), such a device could be used to treat or prevent Alzheimer's disease.

[0004] Although digital displays are not traditional light sources with varying light output or color (temperature), they are still considered a type of light source, especially when displaying a white background image or when switching to flashlight mode (a feature supported by most smartphones). This leads to the idea of ​​dividing the pixels of a digital display into two groups, with each group's pixels refreshed at a different frequency, creating a difference frequency between these two frequencies and mimicking the effect of using two visible light sources, each operating at a different frequency. This disclosure introduces such a digital display device with dual refresh frequencies.

[0005] (overview) In one embodiment, the digital display device includes a controller and a two-dimensional pixel panel. The pixels of the two-dimensional digital pixel panel are divided into a first pixel group and a second pixel group. The controller is configured to operate the first pixel group at a refresh frequency F1>50 Hz. The controller is configured to operate the second pixel group at a refresh frequency F2>50 Hz, different from F1.

[0006] The digital display devices include, but are not limited to, digital computer monitors, digital television screens, laptop computers, tablet computers, smartphones, smart watches, virtual reality goggles, augmented reality goggles, smart goggles, digital reading devices (e.g., Amazon Kindle), etc. Each pixel may further include R (red), G (green), and B (blue) components.

[0007] In some embodiments, the controller has two display channels: a first display channel provides graphic content to the first group of pixels at an F1 frequency, and a second display channel provides graphic content to the second group of pixels at an F2 frequency. Note that a display channel refers to a logical function supported by the controller. There may or may not be two physical channels or ports emanating from the controller module.

[0008] In some embodiments, the first group of pixels and the second group of pixels are interlaced pixel-by-pixel. Pixel-by-pixel interlacing is ideal in that it ensures that the effects of differences in refresh frequency between adjacent pixels are invisible to the subject. However, pixel-by-pixel interlacing may be too expensive to manufacture. In other embodiments, the first group of pixels and the second group of pixels are interlaced row-by-row. For example, all pixels in odd-numbered rows of the two-dimensional digital pixel panel belong to the first group of pixels, and all pixels in even-numbered rows of the two-dimensional digital pixel panel belong to the second group of pixels. Such row-by-row interlacing is easy to implement. Furthermore, if the display resolution is high enough, the effects of differences in refresh frequency between adjacent pixel columns may still be invisible to the subject.

[0009] In some embodiments, the difference between the F1 and F2 frequencies is 35 Hz to 45 Hz. This is the frequency that has been proven to be most effective in treating Alzheimer's disease. There are various options for the F1 and F2 frequencies. In some embodiments, the F1 frequency is 60 Hz and the F2 frequency is 100 Hz. In other embodiments, the F1 frequency is 80 Hz and the F2 frequency is 120 Hz.

[0010] In some embodiments, the controller is further configured to operate the first group of pixels and the second group of pixels at the same frequency (either the F1 frequency or the F2 frequency) for a period called a mono operating frequency duration (e.g., in seconds) every recalibration period (e.g., in minutes). By intentionally setting both groups of pixels to the same frequency (e.g., the F1 frequency), the subject's brain can be phase-locked to the F1 frequency during the mono operating frequency duration. After the mono operating frequency duration, the first group of pixels is updated at the F1 frequency, and the second group of pixels is updated at the F2 frequency. This allows the subject's brain to recognize the difference frequency between the F1 frequency and the F2 frequency. Repeating the operation of the mono operating frequency duration every recalibration period allows the subject's brain to recognize and maintain that recognition of the difference frequency.

[0011] In some embodiments, the readjustment period is between 1 minute and 120 minutes.

[0012] In some embodiments, the single operating frequency period is between 5 seconds and 20 seconds.

[0013] The accompanying drawings are included to aid in a further understanding of the present disclosure and are incorporated in and constitute a part of this disclosure. The drawings illustrate selected embodiments of the present disclosure and, together with the following detailed description, serve to explain the principles of the present disclosure. It should be apparent that the drawings are not necessarily to scale, and that some components may be shown out of proportion to the size of actual implementations in order to clearly illustrate the concepts of the disclosure. [Brief explanation of the drawings]

[0014] [Figure 1] 1 illustrates a schematic diagram of one embodiment of the present disclosure. [Figure 2] FIG. 2A shows a schematic representation of pixel-by-pixel interleaving, and FIG. 2B shows a schematic representation of row-by-row interleaving. DETAILED DESCRIPTION OF THE INVENTION

[0015] Various embodiments of the present disclosure and related inventive concepts are described below. However, it should be recognized that the present disclosure is not limited to any particular embodiment, and the various embodiments expressly described herein are primarily for illustrative purposes. For example, the various concepts described herein may be suitably implemented in a variety of digital display devices having different form factors.

[0016] The digital display device includes a controller and a two-dimensional digital pixel panel, the pixels of which are divided into a first pixel group and a second pixel group, the controller configured to operate the first pixel group at a refresh frequency F1 and the second pixel group at a refresh frequency F2 different from F1.

[0017] (Example) FIG. 1 illustrates one embodiment of a digital display device 100 of the present disclosure. The digital display device 100 includes a controller 101 and a two-dimensional display 102. The pixels of the two-dimensional digital pixel panel 102 are divided into a first pixel group and a second pixel group, as shown in FIGS. 2A and 2B. White dots in FIGS. 2A and 2B indicate pixels in the first pixel group, and black dots indicate pixels in the second pixel group. The controller 102 has two channels 103a and 103b. The controller 102 provides image data to the first pixel group at 80 Hz through channel 103a. Similarly, the controller 101 provides image data to the second pixel group at 120 Hz through a second display channel 103b. The first pixel group and the second pixel group may be interleaved pixel by pixel (as shown in FIG. 2A) or row by row (as shown in FIG. 2B), depending on implementation costs and the resolution of the two-dimensional digital pixel panel.

[0018] Furthermore, the controller 101 operates the first pixel group and the second pixel group at the same frequency of 120 Hz for 10 seconds every 60 minutes. During this 10-second single operating frequency period, the subject's brain is phase-locked to 120 Hz. After this single operating frequency period, the two-dimensional digital pixel panel begins to produce both 80 Hz and 120 Hz refresh frequencies, causing the subject's brain to perceive an invisible 40 Hz difference frequency.

[0019] (Additional and Alternative Implementation Considerations) Although the present technology has been described in terms specific to particular applications, it should be understood that the appended claims are not necessarily limited to the specific features or applications described herein. Rather, the specific features and examples are disclosed as non-limiting exemplary forms of implementing such technology.

[0020] As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from the context, "X uses A or B" is intended to mean any of the natural inclusive permutations. That is, "X uses A or B" is satisfied when X uses A, when X uses B, and when X uses both A and B. Furthermore, the articles "a" and "an," as used in this application and the appended claims, should generally be construed to mean "one or more" unless otherwise specified or clear from the context that a singular form is intended.

Claims

1. 1. A digital display device, comprising: a controller; and a two-dimensional digital pixel panel; wherein the plurality of pixels of the two-dimensional digital pixel panel are divided into a first pixel group and a second pixel group; the controller is configured to operate the first group of pixels at a first refresh frequency (F1) > 50 Hz; and The digital display device, wherein the controller is configured to operate the second group of pixels at a second refresh frequency (F2) > 50 Hz, different from F1.

2. the controller has two display channels including a first display channel and a second display channel; 2. The digital display device of claim 1, wherein said first display channel provides image data to said first group of pixels at said F1 and said second display channel provides image data to said second group of pixels at said F2.

3. 2. The digital display device of claim 1, wherein the first group of pixels and the second group of pixels are interleaved on a pixel-by-pixel basis.

4. 2. The digital display device of claim 1, wherein the first and second groups of pixels are interleaved row by row.

5. 2. The digital display device of claim 1, wherein the difference between F1 and F2 is between 35 Hz and 45 Hz.

6. 6. The digital display device of claim 5, wherein F1 is 60 Hz and F2 is 100 Hz.

7. 6. The digital display device of claim 5, wherein F1 is 80 Hz and F2 is 120 Hz.

8. 2. The digital display device of claim 1, wherein the controller is further configured to operate the first group of pixels and the second group of pixels at the same frequency as either F1 or F2 for a period of time as a single operating frequency period during each readjustment period.

9. 9. The digital display device of claim 8, wherein the readjustment period is between 1 minute and 120 minutes.

10. 9. The digital display device of claim 8, wherein the single operating frequency period is between 5 seconds and 20 seconds.

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