TWI669535B - Headset device and brightness adjusting method of headset device - Google Patents
Headset device and brightness adjusting method of headset device Download PDFInfo
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Abstract
本發明提出一種頭戴式裝置及頭戴式裝置的亮度調整方 法。頭戴式裝置包括：處理器；感光元件，耦接到處理器並感測可見光波長；以及顯示器，耦接到處理器。感光元件感測顯示器的顯示畫面的可見光的波長。處理器判斷波長是否在預定範圍內。當波長在預定範圍內時，處理器調降顯示畫面的色階且顯示器根據調降後的色階顯示顯示畫面。 The invention provides a brightness adjustment method for a head mounted device and a head mounted device law. The head mounted device includes: a processor; a photosensitive element coupled to the processor and sensing a wavelength of visible light; and a display coupled to the processor. The photosensitive element senses the wavelength of visible light of the display of the display. The processor determines if the wavelength is within a predetermined range. When the wavelength is within a predetermined range, the processor lowers the color gradation of the display screen and the display displays the display screen according to the adjusted color gradation.
Description
本發明是有關於一種頭戴式裝置及頭戴式裝置的亮度調整方法，且特別是有關於一種濾藍光的頭戴式裝置及頭戴式裝置的亮度調整方法。 The present invention relates to a method for adjusting the brightness of a head mounted device and a head mounted device, and more particularly to a method for adjusting the brightness of a blue-light head mounted device and a head mounted device.
現有的藍光強度偵測技術，是透過整張影像的直方圖計算，去判斷目前畫面中的藍光部分佔總畫面的比重為何。若畫面中的藍光部分佔大部份比重且落於亮階時才判別為藍光強度較強的情況，並進行濾藍光的調整機制。然而，這樣判斷藍光強度的方式並不精確，且藉由後續濾藍光功能調整後便失去原始觀賞品質(例如，畫面變黃或亮度大幅度降低)。因此，如何過濾藍光並維持影像觀賞品質是本領域技術人員應致力的目標。 The existing blue light intensity detection technology calculates the histogram of the entire image to determine the proportion of the blue portion of the current picture to the total picture. If the blue portion of the picture occupies a large part of the weight and falls on the bright level, it is judged that the blue light intensity is strong, and the adjustment mechanism of filtering the blue light is performed. However, the way to determine the intensity of the blue light is not accurate, and the original viewing quality is lost by adjusting the subsequent blue light filtering function (for example, the picture turns yellow or the brightness is greatly reduced). Therefore, how to filter blue light and maintain image viewing quality is a goal that those skilled in the art should strive for.
本發明提供一種頭戴式裝置及頭戴式裝置的亮度調整方法，能濾藍光並維持影像觀賞品質。 The invention provides a brightness adjustment method for a head mounted device and a head mounted device, which can filter blue light and maintain image viewing quality.
本發明提出一種頭戴式裝置包括：處理器；感光元件，耦接到處理器並感測可見光波長；以及顯示器，耦接到處理器。感光元件感測顯示器的顯示畫面的可見光的波長。處理器判斷波長是否在預定範圍內。當波長在預定範圍內時，處理器調降顯示畫面的色階且顯示器根據調降後的色階顯示顯示畫面。 The present invention provides a head mounted device comprising: a processor; a photosensitive element coupled to the processor and sensing a wavelength of visible light; and a display coupled to the processor. The photosensitive element senses the wavelength of visible light of the display of the display. The processor determines if the wavelength is within a predetermined range. When the wavelength is within a predetermined range, the processor lowers the color gradation of the display screen and the display displays the display screen according to the adjusted color gradation.
在本發明的一實施例中，上述處理器在判斷波長在預定範圍內之後，進行多次的色階調降操作，其中相鄰的色階調降操作之間具有相同的時間間隔。 In an embodiment of the invention, the processor performs a plurality of gradation down-conversion operations after determining that the wavelength is within a predetermined range, wherein adjacent gradation down-conversion operations have the same time interval.
在本發明的一實施例中，當波長不在預定範圍內時，處理器判斷色階是否被調降過，若色階被調降過則處理器進行多次的色階調升操作，其中相鄰的色階調升操作之間具有相同的時間間隔。 In an embodiment of the invention, when the wavelength is not within the predetermined range, the processor determines whether the color gradation has been adjusted, and if the gradation is adjusted, the processor performs a plurality of gradation adjustment operations, wherein the phase The adjacent tone scale up operations have the same time interval between them.
在本發明的一實施例中，上述處理器調降色階值大於色階門檻值的色階。 In an embodiment of the invention, the processor reduces the gradation value of the gradation value greater than the gradation threshold.
在本發明的一實施例中，上述預定範圍對應可見光的藍光的波長範圍。 In an embodiment of the invention, the predetermined range corresponds to a wavelength range of blue light of visible light.
本發明提出一種頭戴式裝置的亮度調整方法，包括：感測顯示器的顯示畫面的可見光的波長；判斷波長是否在預定範圍內；以及當波長在預定範圍內時，調降顯示畫面的色階且顯示器根據調降後的色階顯示顯示畫面。 The present invention provides a brightness adjustment method for a head mounted device, comprising: sensing a wavelength of visible light of a display screen of the display; determining whether the wavelength is within a predetermined range; and decreasing a color level of the display screen when the wavelength is within a predetermined range And the display displays the display according to the adjusted color scale.
在本發明的一實施例中，上述頭戴式裝置的亮度調整方法更包括：在判斷波長在預定範圍內之後，進行多次的色階調降 操作，其中相鄰的色階調降操作之間具有相同的時間間隔。 In an embodiment of the present invention, the brightness adjustment method of the head mounted device further includes: performing a plurality of color gradation down after determining that the wavelength is within a predetermined range. Operation in which adjacent gradation down operations have the same time interval between them.
在本發明的一實施例中，上述頭戴式裝置的亮度調整方法更包括：當波長不在預定範圍內時，判斷色階是否被調降過，若色階被調降過則處理器進行多次的色階調升操作，其中相鄰的色階調升操作之間具有相同的時間間隔。 In an embodiment of the present invention, the brightness adjustment method of the head mounted device further includes: determining whether the color gradation is adjusted if the wavelength is not within the predetermined range, and if the color gradation is lowered, the processor performs more Sub-level gradation operation in which adjacent gradation adjustment operations have the same time interval.
在本發明的一實施例中，上述頭戴式裝置的亮度調整方法更包括：調降色階值大於色階門檻值的色階。 In an embodiment of the present invention, the brightness adjustment method of the head mounted device further includes: adjusting a color gradation value that is greater than a color gradation threshold value.
在本發明的一實施例中，上述預定範圍對應可見光的藍光的波長範圍。 In an embodiment of the invention, the predetermined range corresponds to a wavelength range of blue light of visible light.
基於上述，本發明的頭戴式裝置及頭戴式裝置的亮度調整方法會感測頭戴式裝置的顯示畫面的波長並判斷波長是否在藍光的波長範圍內。當波長在藍光的波長範圍內時，調降顯示畫面的色階並根據調降後的色階顯示顯示畫面。色階調降操作可分成多次來進行且相鄰的色階調降操作之間具有相同的時間間隔。 Based on the above, the brightness adjustment method of the head mounted device and the head mounted device of the present invention senses the wavelength of the display screen of the head mounted device and determines whether the wavelength is within the wavelength range of the blue light. When the wavelength is in the wavelength range of the blue light, the color gradation of the display screen is lowered and the display screen is displayed according to the adjusted color gradation. The gradation down operation can be performed in multiples and adjacent gradation down operations have the same time interval.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 The above described features and advantages of the invention will be apparent from the following description.
100‧‧‧頭戴式裝置 100‧‧‧ head mounted device
110‧‧‧顯示器 110‧‧‧ display
120‧‧‧處理器 120‧‧‧ processor
130‧‧‧感光元件 130‧‧‧Photosensitive elements
140‧‧‧溫度感測器 140‧‧‧temperature sensor
150‧‧‧近接感測器 150‧‧‧ proximity sensor
160‧‧‧儲存元件 160‧‧‧Storage components
S201~S211‧‧‧頭戴式裝置的亮度調整方法的步驟 Steps for adjusting the brightness of the S201~S211‧‧ head-mounted device
圖1為根據本發明一實施例的頭戴式裝置的方塊圖。 1 is a block diagram of a head mounted device in accordance with an embodiment of the present invention.
圖2為根據本發明一實施例的頭戴式裝置的亮度調整方法的流程圖。 2 is a flow chart of a method of adjusting brightness of a head mounted device in accordance with an embodiment of the present invention.
圖1為根據本發明一實施例的頭戴式裝置的方塊圖。 1 is a block diagram of a head mounted device in accordance with an embodiment of the present invention.
請參照圖1，本發明一實施例的頭戴式裝置100包括顯示器110、處理器120、感光元件130、溫度感測器140、近接感測150及儲存元件160。顯示器110可透過影像傳輸標準耦接到處理器120。感光元件130、溫度感測器140、近接感測器(proximity sensor)150及儲存元件160可透過積體電路間(Inter-Integrated Circuit，I2C)匯流排耦接到處理器120。處理器120例如是微處理器控制單元(Microprocessor Control Unit，MCU)。感光元件130例如是任何能感測可見光波長的感光元件(例如，奧地利微電子公司所推出的AS726X感光元件)。儲存元件160例如是電子抹除式可複寫唯讀記憶體(Electrically-Erasable Programmable Read-Only Memory，EEPROM)。在一實施例中，頭戴式裝置100可為虛擬實境(Virtual Reality，VR)裝置。 Referring to FIG. 1 , a head mounted device 100 according to an embodiment of the invention includes a display 110 , a processor 120 , a photosensitive element 130 , a temperature sensor 140 , a proximity sensing 150 , and a storage component 160 . Display 110 can be coupled to processor 120 via an image transmission standard. The photosensitive element 130, the temperature sensor 140, the proximity sensor 150, and the storage element 160 are coupled to the processor 120 through an integrated inter-integrated circuit (I2C) bus bar. The processor 120 is, for example, a microprocessor control unit (MCU). The photosensitive element 130 is, for example, any photosensitive element capable of sensing the wavelength of visible light (for example, an AS726X photosensitive element introduced by the Austrian Microelectronics Corporation). The storage element 160 is, for example, an Electrically-Erasable Programmable Read-Only Memory (EEPROM). In an embodiment, the head mounted device 100 can be a Virtual Reality (VR) device.
在一實施例中，感光元件130感測顯示器110的顯示畫面的可見光的波長。處理器120判斷波長是否在預定範圍內。當波長在預定範圍內時，處理器120調降顯示畫面的色階且顯示器110根據調降後的色階顯示顯示畫面。具體來說，處理器120會判斷顯示畫面的波長是否進入藍光的波長範圍(例如，420-455nm)。若顯示畫面的波長進入藍光的波長範圍，則處理器120透過調降顯示畫面的色階(即，調降顯示畫面的灰階)將亮度調低以減少藍光 強度，以減少藍光刺激人眼。表一為調降顯示畫面色階的範例。 In an embodiment, the photosensitive element 130 senses the wavelength of visible light of the display image of the display 110. The processor 120 determines if the wavelength is within a predetermined range. When the wavelength is within the predetermined range, the processor 120 lowers the color gradation of the display screen and the display 110 displays the display screen according to the adjusted color gradation. Specifically, the processor 120 determines whether the wavelength of the display screen enters a wavelength range of blue light (for example, 420-455 nm). If the wavelength of the display screen enters the wavelength range of the blue light, the processor 120 lowers the brightness to reduce the blue light by lowering the color gradation of the display screen (ie, lowering the gray level of the display screen). The intensity to reduce blue light stimulates the human eye. Table 1 shows an example of reducing the color scale of the display screen.
如表一所示，調降後的色階以251階的色階值取代原始的255階的色階值，因此最大亮度可以從105nits降低到99.3nits，約降低8%，從而降低藍光對人眼的傷害。值得注意的是，在表一中，原始色階4、3、2、1、0所對應的調降後色階都可為0。雖然在以上實施例中說明了調降0到255的原始色階，但本發明並不以此為限。在另一實施例中，處理器120也可調降色階值大於色階門檻值的色階。舉例來說，當色階門檻值為127時，處理器120也可只調降原始色階在128到255的色階。在一實施例中，調降色階是對顯示畫面的所有像素都調降色階。值得注意的是，本發明並不限制於調降4階色階。 As shown in Table 1, the adjusted color gradation replaces the original 255-order gradation value with a 251-order gradation value, so the maximum brightness can be reduced from 105 nits to 99.3 nits, which is reduced by about 8%, thereby reducing the Blu-ray to human Eye damage. It should be noted that in Table 1, the adjusted color gradation corresponding to the original gradation 4, 3, 2, 1, and 0 can be 0. Although the original color gradation of 0 to 255 is described in the above embodiment, the present invention is not limited thereto. In another embodiment, the processor 120 also adjusts the gradation of the gradation value greater than the gradation threshold. For example, when the color scale threshold is 127, the processor 120 can also only adjust the color scale of the original color scale from 128 to 255. In one embodiment, the color gradation is a gradation reduction for all pixels of the display. It is worth noting that the invention is not limited to the reduction of the 4th order color gradation.
然而，若一次將原始色階從255調降到251，人眼在沉浸 式的環境(例如，虛擬實境VR裝置)中很容易查覺到亮度發生改變。假設顯示器110使用的面板為每秒90幀(frame per second，fps)(即，每幀0.011秒)。處理器120可以在顯示器110每3幀的時間間隔(例如，0.033秒)調降一次色階，也就是花0.099秒將色階從255調降到254、從254調降到253、從253調降到252、再從252調降到251。原始色階為255以外的值則以此類推。由於視覺暫留效果，使人眼不會感受到顯示畫面有大幅度的亮度變化。此外，以上述亮度調降方式來濾藍光比起現有技術直接將紅綠藍(RGB)的藍(B)濾除掉，更能保有原有的色彩品質。 However, if the original color scale is reduced from 255 to 251 at a time, the human eye is immersed. It is easy to detect a change in brightness in a type of environment (for example, a virtual reality VR device). It is assumed that the panel used by the display 110 is frame per second (fps) (ie, 0.011 second per frame). The processor 120 can reduce the color gradation by one time interval (for example, 0.033 seconds) every three frames of the display 110, that is, 0.099 seconds to adjust the color gradation from 255 to 254, from 254 to 253, and from 253 to 253. Drop to 252 and then down from 252 to 251. Values other than 255 for the original level are deduced by analogy. Due to the visual persistence effect, the human eye does not feel a large change in brightness of the display screen. In addition, filtering the blue light by the above-mentioned brightness reduction method directly removes the blue (B) of red, green and blue (RGB) from the prior art, and more preserves the original color quality.
圖2為根據本發明一實施例的頭戴式裝置的亮度調整方法的流程圖。 2 is a flow chart of a method of adjusting brightness of a head mounted device in accordance with an embodiment of the present invention.
請參照圖2，在步驟S201中，感光元件感測顯示器的顯示畫面的可見光的波長。 Referring to FIG. 2, in step S201, the photosensitive element senses the wavelength of visible light of the display screen of the display.
在步驟S202中，處理器判斷該波長是否在藍光的波長範圍內。 In step S202, the processor determines whether the wavelength is within the wavelength range of the blue light.
若波長在藍光的波長範圍內，在步驟S203中，處理器進行第一次色階調降操作。 If the wavelength is in the wavelength range of the blue light, in step S203, the processor performs the first color gradation down operation.
在步驟S204中，處理器經過一時間間隔進行第二次色階調降操作。 In step S204, the processor performs a second tone scale down operation over a time interval.
在步驟S205中，處理器經過一時間間隔進行第三次色階調降操作。 In step S205, the processor performs a third color gradation down operation over a time interval.
在步驟S206中，處理器經過一時間間隔進行第四次色階 調降操作，並回到步驟S201。 In step S206, the processor performs the fourth color gradation through a time interval. The down operation is performed, and the process returns to step S201.
若波長不在藍光的波長範圍內，在步驟S207中，處理器判斷色階是否被調降過。 If the wavelength is not within the wavelength range of the blue light, in step S207, the processor determines whether the color gradation has been adjusted.
若色階沒被調降過，則回到步驟S201。 If the color gradation has not been adjusted, the process returns to step S201.
若色階有被調降過，在步驟S208中，處理器進行第一次色階調升操作。 If the color gradation has been adjusted, in step S208, the processor performs the first gradation adjustment operation.
在步驟S209中，處理器經過一時間間隔進行第二次色階調升操作。 In step S209, the processor performs a second tone scale up operation over a time interval.
在步驟S210中，處理器經過一時間間隔進行第三次色階調升操作。 In step S210, the processor performs a third tone scale up operation over a time interval.
在步驟S211中，處理器經過一時間間隔進行第四次色階調升操作，並回到步驟S201。上述時間間隔例如是0.033秒。上述第一到第四次色階調降操作例如是分別將色階從255調降到254、從254調降到253、從253調降到252、再從252調降到251。上述第一到第四次色階調升操作例如是分別將色階從251調升到252、從252調升到253、從253調升到254、再從254調升到255。原始色階為255以外的色階則根據表一以此類推。 In step S211, the processor performs the fourth tone scale up operation through a time interval, and returns to step S201. The above time interval is, for example, 0.033 seconds. The first to fourth gradation adjustment operations described above are, for example, respectively reducing the gradation from 255 to 254, from 254 to 253, from 253 to 252, and then from 252 to 251. The first to fourth gradation adjustment operations described above are, for example, increasing the gradation from 251 to 252, from 252 to 253, from 253 to 254, and then from 254 to 255. The color gradation of the original color gradation other than 255 is based on Table 1 and so on.
綜上所述，本發明的頭戴式裝置及頭戴式裝置的亮度調整方法會感測頭戴式裝置的顯示畫面的波長並判斷波長是否在藍光的波長範圍內。當波長在藍光的波長範圍內時，調降顯示畫面的色階並根據調降後的色階顯示顯示畫面。透過調降顯示畫面的色階將亮度調低以減少藍光強度可減少藍光刺激人眼。色階調降 操作可分成多次來進行且相鄰的色階調降操作之間具有相同的時間間隔。因此，人眼不會感受到顯示畫面有大幅度的亮度變化。 In summary, the brightness adjustment method of the head mounted device and the head mounted device of the present invention senses the wavelength of the display screen of the head mounted device and determines whether the wavelength is within the wavelength range of the blue light. When the wavelength is in the wavelength range of the blue light, the color gradation of the display screen is lowered and the display screen is displayed according to the adjusted color gradation. By lowering the color scale of the display to lower the brightness to reduce the intensity of the blue light, the blue light is less irritating to the human eye. Level shift The operation can be divided into multiple iterations and the adjacent gradation downshift operations have the same time interval between them. Therefore, the human eye does not feel a large change in brightness of the display screen.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
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|---|---|---|---|---|
| TW201701025A (en) * | 2015-04-15 | 2017-01-01 | 雷蛇（亞太）私人有限公司 | Filtering devices and filtering methods |
| US20170124959A1 (en) * | 2015-10-29 | 2017-05-04 | Lg Display Co., Ltd. | Luminance control device and display device comprising the same |
| TW201735630A (en) * | 2016-03-28 | 2017-10-01 | 宏碁股份有限公司 | Electronic device with function of filtering blue light and method for filtering blue light dynamically |
| TWI635320B (en) * | 2017-09-28 | 2018-09-11 | 宏碁股份有限公司 | Head mounted display device and control brightness method |
-
2018
- 2018-12-05 TW TW107143774A patent/TWI669535B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201701025A (en) * | 2015-04-15 | 2017-01-01 | 雷蛇（亞太）私人有限公司 | Filtering devices and filtering methods |
| US20170124959A1 (en) * | 2015-10-29 | 2017-05-04 | Lg Display Co., Ltd. | Luminance control device and display device comprising the same |
| TW201735630A (en) * | 2016-03-28 | 2017-10-01 | 宏碁股份有限公司 | Electronic device with function of filtering blue light and method for filtering blue light dynamically |
| TWI635320B (en) * | 2017-09-28 | 2018-09-11 | 宏碁股份有限公司 | Head mounted display device and control brightness method |
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| TW202022434A (en) | 2020-06-16 |
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