TWI797961B - Storage and display method of display data and display device and information processing device using same - Google Patents
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Abstract
本發明主要揭示一種顯示數據之儲存和顯示方法,包括以下步驟:將儲存在一儲存單元的一前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據;依據含有低位0之數量對序號1至序號m-1的m-1個所述子幀顯示數據進行顯示次序之先後安排;接收一上位機所傳送的一幀同步信號以及一幀顯示數據;以及在完成所述幀顯示數據的接收之後,驅動該顯示面板依顯示次序顯示m個子幀顯示數據,且在每個所述子幀顯示數據完成顯示之後,以覆蓋的方式將所述幀顯示數據的部分位元儲存在該儲存單元儲存所述子幀顯示數據之儲存空間,直至所有子幀顯示數據的全部顯示,該儲存單元原儲存所述前幀顯示數據之儲存空間系由幀顯示數據所完全覆蓋。 The present invention mainly discloses a method for storing and displaying display data, which includes the following steps: dividing the display data of a previous frame stored in a storage unit into m sub-frame display data including sequence number 0 to sequence number m-1; Arrange the display order of the m-1 sub-frame display data from serial number 1 to serial number m-1; receive a frame synchronization signal and a frame display data transmitted by a host computer; and complete the After the frame display data is received, the display panel is driven to display m subframe display data in display order, and after the display of each subframe display data is completed, some bits of the frame display data are stored in an overwriting manner The storage space for storing the display data of the sub-frame in the storage unit until all the display data of the sub-frame is completely displayed, the storage space of the storage unit for storing the display data of the previous frame is completely covered by the display data of the frame.
Description
本發明系關於顯示裝置之技術領域,尤指一種顯示數據之儲存和顯示方法。 The present invention relates to the technical field of display devices, in particular to a method for storing and displaying display data.
已知,發光二極體(Light-emitting diode,LED)具有體積小、重量輕、使用壽命長、發光效率高等多項優點,目前已廣泛地應用於照明裝置及顯示裝置之中。LED顯示裝置為一種自發光平面顯示裝置,具有色彩鮮豔、動態範圍廣、亮度高、壽命長、可靠度高等優點,是以大尺寸螢幕的LED顯示裝置已廣泛地應用於大型廣場、商業廣告、體育場館、資訊傳播、新聞發佈、證券交易場所,作為一種公眾顯示媒介。 It is known that light-emitting diodes (Light-emitting diodes, LEDs) have many advantages such as small size, light weight, long service life, and high luminous efficiency, and have been widely used in lighting devices and display devices. The LED display device is a self-illuminating flat-panel display device, which has the advantages of bright colors, wide dynamic range, high brightness, long life, and high reliability. The LED display device with a large screen has been widely used in large squares, commercial advertisements, Sports venues, information dissemination, news releases, stock exchange places, as a public display medium.
圖1顯示習知的一種LED顯示裝置的架構圖。如圖1所示,習知的LED顯示裝置1a主要包括:一LED顯示面板11a以及一顯示驅動電路12a,該顯示驅動電路12a依據傳送自上位機2a的一幀同步信號和一幀顯示數據而對該LED顯示面板11a進行顯示驅動。傳統上,系通過控制LED電流大小及其導通時間的方式來精准控制每個LED圖元的灰度(亮度)。導通時間控制法是在恒流驅動的情形下,通過改變占空比來控制LED的灰度,例如,為了顯示一幀圖像,對於每一個LED圖元提供16位元灰階資料G[15:0]。
FIG. 1 shows a structure diagram of a conventional LED display device. As shown in Figure 1, the conventional LED display device 1a mainly includes: an LED display panel 11a and a
在一種改進的顯示數據驅動方法中,為了提高顯示圖像的刷新率,可以將一幀顯示數據分成複數個子幀,逐個子幀進行顯示。每一個子幀的持續時間長度越短,則刷新率指標越高。在此種方法中,將所述幀顯示數據的整數部分平均分配在複數個子幀中(即打散),但所述幀顯示數據無法被整除的餘數部分則不進行打散,直接將其指定在一個子幀中(通常為序號0的子幀)。 In an improved display data driving method, in order to increase the refresh rate of the displayed image, one frame of display data can be divided into multiple sub-frames and displayed one by one. The shorter the duration of each subframe is, the higher the refresh rate index is. In this method, the integer part of the frame display data is evenly distributed among a plurality of sub-frames (that is, broken up), but the remainder part of the frame display data that cannot be divisible by an integer is not broken up, and it is directly assigned In a subframe (usually the subframe with sequence number 0).
現有技術採用乒乓幀的作法進行當前幀顯示數據接收以及依據前一幀顯示數據驅動該LED顯示面板11a進行圖像顯示。亦即,以當前幀之顯
示數據的幀頭或幀尾位作為控制位元,當顯示驅動電路12a接收到此控制位之後,即開始依據前一幀顯示數據驅動該LED顯示面板11a進行圖像顯示。如此反復,直到上位機2a不再傳送顯示數據。換句話說,乒乓幀的作法是暫存器的儲存空間至少能夠同時儲存兩個幀顯示數據。然而,隨著灰階資料的位元數(即,解析度)的增加,儲存單一個幀顯示數據所需空間也因此更大,導致適用於乒乓幀的暫存器被要求具有大儲存空間,從而造成所述顯示驅動電路12a的製造成本難以降低。
The prior art adopts the method of ping-pong frame to receive the display data of the current frame and drive the LED display panel 11a to display the image according to the display data of the previous frame. That is, in the display of the current frame
The frame header or frame tail bit of the display data is used as the control bit. After the
由上述說明可知,本領域亟需一種新式的顯示數據之儲存和顯示方法。 It can be seen from the above description that there is an urgent need in the art for a new method for storing and displaying display data.
本發明之主要目的在於提供一種顯示數據之儲存和顯示方法,其技術特徵在於,上位機按圖元(如:16位元圖元)發送一(當前)幀顯示數據立即發起幀同步信號,使顯示驅動電路將上一幀顯示數據自SRAM讀出,並分為包括序號0至序號m-1的m個子幀顯示數據,且對其進行顯示次序之先後排序。在驅動顯示面板顯示完第一個子幀後(如:序號0子幀),即可將已接收的(當前)幀顯示數據對應的位元寫入SRAM以替換完成顯示之子幀所對應的位元。因此,通過調整子幀顯示順序,可以讓前幀顯示數據之中的低位元的位元優先被顯示完畢,然後讓當前幀顯示數據之中對應的低位元位元被寫入之中,如此反復,直到所有子幀顯示完畢,則當前幀顯示數據的所有位元也全部寫入SRAM之中。依此作法,顯示驅動電路可以一邊進行前幀顯示數據之顯示驅動,同時可以一邊對已接收的當前幀顯示數據進行資料儲存,從而實現用小於2個乒乓幀SRAM空間,完整存儲乒乓幀,並連續顯示。 The main purpose of the present invention is to provide a method for storing and displaying display data. Its technical feature is that the upper computer sends a (current) frame of display data according to the graphic element (such as: 16-bit graphic element) and immediately initiates a frame synchronization signal, so that The display driving circuit reads out the display data of the previous frame from the SRAM, divides them into m sub-frame display data including sequence number 0 to sequence number m-1, and sorts them in display sequence. After the display panel is driven to display the first subframe (such as: subframe number 0), the bit corresponding to the received (current) frame display data can be written into the SRAM to replace the bit corresponding to the subframe that has been displayed Yuan. Therefore, by adjusting the display order of the subframes, the low-order bits in the display data of the previous frame can be displayed first, and then the corresponding low-order bits in the display data of the current frame can be written, and so on. , until all subframes are displayed, all bits of the current frame display data are also written into the SRAM. According to this method, the display driving circuit can perform the display driving of the display data of the previous frame, and at the same time store the received current frame display data, so that the SRAM space of less than 2 ping-pong frames can be used to completely store the ping-pong frames, and displayed continuously.
為達成上述目的,本發明提出所述顯示數據之儲存和顯示方法的一實施例,其系由一顯示驅動電路執行,且包括:將儲存在一儲存單元的一前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據,m為正整數; 依據含有低位0之數量對序號1至序號m-1的m-1個所述子幀顯示數據進行顯示次序之先後安排;接收一上位機所傳送的一幀同步信號以及一幀顯示數據;以及在完成所述幀顯示數據的接收之後,驅動該顯示面板依顯示次序顯示m個子幀顯示數據,且在每個所述子幀顯示數據完成顯示之後,以覆蓋的方式將所述幀顯示數據的部分位元儲存在該儲存單元儲存所述子幀顯示數據之儲存空間,直至所有子幀顯示數據的全部顯示,該儲存單元原儲存所述前幀顯示數據之儲存空間由幀顯示數據所完全覆蓋。 In order to achieve the above object, the present invention proposes an embodiment of the storage and display method of the display data, which is executed by a display driving circuit, and includes: dividing the display data of a previous frame stored in a storage unit into serial numbers m subframes from 0 to serial number m-1 display data, m is a positive integer; Arranging the display order of the m-1 sub-frame display data from serial number 1 to serial number m-1 according to the number of low-order 0s; receiving a frame synchronization signal and a frame of display data transmitted by a host computer; and After receiving the frame display data, drive the display panel to display m sub-frame display data in display order, and after each sub-frame display data is displayed, overwrite the frame display data Partial bits are stored in the storage unit storing the storage space of the sub-frame display data until all the sub-frame display data are fully displayed, and the storage unit originally storing the storage space of the previous frame display data is completely covered by the frame display data .
在一實施例中,該顯示驅動電路依據一觸發顯示信號的觸發而開始按所述顯示次序驅動該顯示面板顯示m個子幀顯示數據。 In one embodiment, the display driving circuit starts to drive the display panel to display m sub-frame display data according to the display sequence according to a trigger display signal.
在一實施例中,所述觸發顯示信號傳送自該上位機,或由該顯示驅動電路對所述幀同步信號進行一移位元處理而自行產生。 In one embodiment, the display triggering signal is transmitted from the host computer, or is generated by the display driving circuit by performing a bit-shift processing on the frame synchronization signal.
在一實施例中,所述前幀顯示數據包括L個顯示數據位元,序號1至序號m-1的m-1個所述子幀顯示數據包含S個子幀整數位元以及Q個子幀餘數位元,且序號0之所述子幀顯示數據則包含S個子幀整數位元、Q個子幀餘數位元以及P個整幀餘數位元;S、Q、P、L皆為正整數,且S+P+Q=L。 In an embodiment, the display data of the previous frame includes L display data bits, and the m-1 subframe display data from sequence number 1 to sequence number m-1 include S subframe integer bits and Q subframe remainders bits, and the subframe display data with serial number 0 includes S subframe integer bits, Q subframe remainder bits, and P whole frame remainder bits; S, Q, P, and L are all positive integers, and S+P+Q=L.
在一實施例中,所述S個子幀整數位元為所述幀顯示數據的所述L個顯示數據位元的前S個高位位元,所述P個整幀餘數位元為所述幀顯示數據的L個顯示數據位元的後P個低位位元,且Q個子幀餘數位元為所述幀顯示數據的L個顯示數據位元之中排除所述前S個高位位元和所述P個低位位元之後的中間Q個位元。 In one embodiment, the S subframe integer bits are the first S high order bits of the L display data bits of the frame display data, and the P whole frame remainder bits are the frame display data The last P low-order bits of the L display data bits of the display data, and the Q sub-frame remainder bits are the L display data bits of the frame display data excluding the first S high-order bits and all The middle Q bits after the P low bits.
在一實施例中,該顯示驅動電路在完成所述前幀顯示數據之所有顯示數據位元的接收之後,立即接著使用序號0之所述子幀顯示數據對該顯示面板進行圖像顯示驅動,接著依顯示次序之先後安排序號1至序號m-1之所述子幀顯示數據對該顯示面板進行圖像顯示驅動。 In one embodiment, the display driving circuit uses the sub-frame display data of serial number 0 to drive the display panel for image display immediately after receiving all the display data bits of the previous frame display data, Then, the display panel is driven for image display according to the display data of the sub-frames with sequence number 1 to sequence number m-1 arranged in sequence.
在一實施例中,在序號0之所述子幀顯示數據被顯示完畢之後,該儲存單元釋放出原本儲放所述P個整幀餘數位元之儲存空間,用以儲存幀顯 示數據所包含的L個顯示數據位元之中對應的P個;在序號1至序號m-1的m-1個所述子幀顯示數據依其顯示次序而被顯示完畢之後,該儲存單元系逐位元釋放原本儲放所述Q個子幀餘數位元的儲存空間,用以儲存幀顯示數據所包含的L個顯示數據位元之中對應的Q個;在最後一個子幀顯示數據被顯示完畢之後,該儲存單元釋放原本儲放所述S個子幀整數位元的儲存空間,用以儲存幀顯示數據所包含的L個顯示數據位元之中對應的S個。 In one embodiment, after the display data of the sub-frame with sequence number 0 is displayed, the storage unit releases the storage space originally storing the P remainder bits of the whole frame to store the display data of the frame. The corresponding P bits among the L display data bits contained in the display data; after the m-1 sub-frame display data from sequence number 1 to sequence number m-1 are displayed in their display order, the storage unit It is to release the storage space that originally stored the remaining bits of the Q subframes bit by bit, so as to store the corresponding Q bits among the L display data bits included in the frame display data; After the display is completed, the storage unit releases the storage space originally storing the S subframe integer bits to store corresponding S bits among the L display data bits included in the frame display data.
並且,本發明同時提出一種顯示裝置,其包括一顯示面板與一顯示驅動電路,其特徵在於,該顯示驅動電路利用如前所述本發明之顯示數據之儲存和顯示方法,從而按位元儲存一上位機所傳送的一幀顯示數據,以及依據一前幀顯示數據對該顯示面板進行圖像顯示驅動。 Moreover, the present invention also proposes a display device, which includes a display panel and a display driving circuit, which is characterized in that the display driving circuit utilizes the method for storing and displaying display data of the present invention as described above to store data by bit. A frame of display data transmitted by a host computer, and image display driving of the display panel is performed according to a previous frame of display data.
在一實施例中,該顯示面板為選自于由發光二極體顯示面板、量子點發光二極體顯示面板、微發光二極體顯示面板、次毫米發光二極體顯示面板、鈣鈦礦發光二極體顯示面板、和有機發光二極體顯示面板所組成的群組之中的一種平面顯示面板。 In one embodiment, the display panel is selected from a light emitting diode display panel, a quantum dot light emitting diode display panel, a micro light emitting diode display panel, a submillimeter light emitting diode display panel, a perovskite A flat display panel in the group consisting of a light emitting diode display panel and an organic light emitting diode display panel.
進一步地,本發明同時提出一種資訊處理裝置,其具有如前所述本發明之顯示裝置,且該資訊處理裝置為選自於由電視牆、智慧手機、智慧手錶、智慧手環、平板電腦、筆記型電腦、一體式電腦、和門口機裝置所組成群組之中的一種電子裝置。 Furthermore, the present invention also proposes an information processing device, which has the display device of the present invention as described above, and the information processing device is selected from video walls, smart phones, smart watches, smart bracelets, tablet computers, An electronic device in the group consisting of notebook computers, all-in-one computers, and outdoor station devices.
1a:LED顯示裝置 1a: LED display device
11a:LED顯示面板 11a: LED display panel
12a:顯示驅動電路 12a: Display drive circuit
2a:上位機 2a: PC
1:顯示裝置 1: Display device
11:顯示面板 11: Display panel
12:顯示驅動電路 12: Display drive circuit
120:控制單元 120: Control unit
121:儲存單元 121: storage unit
122:顯示驅動單元 122: Display drive unit
2:上位機 2: PC
S1:將儲存在一儲存單元的一前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據 S1: Divide a previous frame display data stored in a storage unit into m sub-frame display data including sequence number 0 to sequence number m-1
S2:依據含有低位0之數量對序號1至序號m-1的m-1個所述子幀顯示數據進行顯示次序之先後安排 S2: Arrange the display order of the m-1 subframe display data from sequence number 1 to sequence number m-1 according to the number of low-order 0s
S3:接收一上位機所傳送的一幀同步信號以及一幀顯示數據 S3: Receive a frame synchronization signal and a frame display data transmitted by a host computer
S4:在完成所述幀顯示數據的接收之後,驅動該顯示面板依顯示次序顯示m個子幀顯示數據,且在每個所述子幀顯示數據完成顯示之後,以覆蓋的方式將所述幀顯示數據的部分位元儲存在該儲存單元儲存所述子幀顯示數據之儲存空間,直至所有子幀顯示數據的全部顯示,該儲存單元原儲存所述前幀顯示數據之儲存空間由幀顯示數據所完全覆蓋 S4: After receiving the frame display data, drive the display panel to display m sub-frame display data in display order, and display the frame in an overlay mode after each sub-frame display data is displayed Some bits of the data are stored in the storage unit storing the storage space of the sub-frame display data until all the sub-frame display data are fully displayed. The storage unit originally stored the storage space of the previous frame display data by the frame display data. full coverage
圖1為習知的一種LED顯示裝置的架構圖;圖2為應用本發明之一種顯示數據之儲存和顯示方法的一顯示裝置的架構圖;以及圖3為本發明之一種顯示數據之儲存和顯示方法的流程圖;以及圖4為一幀同步信號、一幀顯示數據、一觸發顯示信號、與一子幀顯示數據的工作時序圖。 Fig. 1 is a structural diagram of a known LED display device; Fig. 2 is a structural diagram of a display device applying a storage and display method of display data of the present invention; and Fig. 3 is a storage and display method of display data of the present invention A flow chart of the display method; and FIG. 4 is a working timing diagram of a frame synchronization signal, a frame display data, a trigger display signal, and a sub-frame display data.
為使 貴審查委員能進一步瞭解本發明之結構、特徵、目的、與其優點,茲附以圖式及較佳具體實施例之詳細說明如後。 In order to enable your examiners to further understand the structure, features, purpose, and advantages of the present invention, drawings and detailed descriptions of preferred embodiments are hereby attached.
圖2為應用本發明之一種顯示數據之儲存和顯示方法的一顯示裝置的架構圖。並且,圖3顯示本發明之一種顯示數據之儲存和顯示方法的流程圖。如圖2所示,該顯示裝置1主要包括:一顯示面板11以及一顯示驅動電路12,且該顯示驅動電路12具有一控制單元120、一儲存單元121以及一顯示驅動單元122。在一般的情況下,該顯示驅動電路12依據傳送自上位機2的一幀同步信號和一幀顯示數據而對該顯示面板11進行顯示驅動。
FIG. 2 is a structural diagram of a display device applying a method for storing and displaying display data according to the present invention. Moreover, FIG. 3 shows a flowchart of a method for storing and displaying display data in the present invention. As shown in FIG. 2 , the display device 1 mainly includes: a
長期涉及顯示驅動晶片之設計與製造的工程師必然知道,現有技術採用乒乓幀的作法進行(當前)幀顯示數據的接收以及依據前幀顯示數據驅動顯示面板11進行圖像顯示。不同地,在應用本發明之方法的情況下,該顯示驅動電路12將儲存在一儲存單元121的一前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據,m為正整數(即,執行步驟S1)。
Engineers who have been involved in the design and manufacture of display driver chips for a long time must know that the prior art uses ping-pong frames to receive (current) frame display data and drive the
舉例而言,所述前幀顯示數據為一16位元資料,則每個圖元的一個幀的顯示數據為G[15:0]。在令最小顯示單位k亦為16的情況下,利用以下式(1)~式(3)計算出所述前幀顯示數據的每個子幀顯示數據所具有之基本資料:r=G%k=G[3:0].........................................................................(1) For example, the display data of the previous frame is a 16-bit data, and the display data of one frame of each graphic element is G[15:0]. Under the condition that the minimum display unit k is also 16, use the following equations (1) to (3) to calculate the basic data of each sub-frame display data of the previous frame display data: r=G%k= G[3:0]................................................ .............................(1)
d=G%(m*k)/k=G[7:4]............................................................(2) d=G%(m*k)/k=G[7:4].......................... ............................(2)
I=G/(m*k)=G[15:8]................................................................(3) I=G/(m*k)=G[15:8].......................... ................................(3)
為了將完整的一個前幀顯示數據平均分配到16個子幀顯示數據之中,每個子幀顯示數據必須至少包含:子幀整數位元以及子幀餘數位元。其中,上式(2)計算出每個子幀顯示數據含有Q個子幀餘數位元,即前幀顯示數據之中的G[7:4]。並且,上式(3)計算出每個子幀顯示數據含有S個子幀整數位元,即前幀顯示數據之中的G[15:8]。值得注意的是,r指的是未被平均分配到16個子幀顯示數據之中的整幀餘數位元,經由上式(1)計算可知r為前幀顯示數據之 中的G[3:0]。補充說明的是,通常r(即,G[3:0])會被放入序號0之所述子幀顯示數據。 In order to evenly distribute the display data of a complete previous frame to the 16 sub-frame display data, each sub-frame display data must at least include: sub-frame integer bits and sub-frame remainder bits. Wherein, the above formula (2) calculates that each subframe display data contains Q subframe remainder bits, that is, G[7:4] in the previous frame display data. Moreover, the above formula (3) calculates that each subframe display data contains S subframe integer bits, that is, G[15:8] in the previous frame display data. It is worth noting that r refers to the remaining bits of the entire frame that are not evenly distributed among the 16 sub-frame display data. Through the calculation of the above formula (1), it can be known that r is the number of display data of the previous frame. G[3:0] in . It should be added that usually r (ie, G[3:0]) will be placed in the sub-frame display data of sequence number 0.
換句話說,該顯示驅動電路12將所述前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據,其中序號1至序號m-1的m-1個所述子幀顯示數據包含S個子幀整數位元以及Q個子幀餘數位元,且序號0之所述子幀顯示數據則包含S個子幀整數位元、Q個子幀餘數位元以及P個整幀餘數位元;Q、P皆為正整數,且S+P+Q=L。更詳細地說明,以子幀整數位元I=G[15:8]、子幀餘數位元R=G[7:4]以及整幀餘數位元r=G[3:0]為例,子幀整數位元為一8位中繼資料,子幀餘數位元為一4位中繼資料,且整幀餘數位元為一4位中繼資料。
In other words, the
因此,所有m個子幀顯示數據會滿足以下式(4)~式(7):gn=I*k+x.................................................................................(4) Therefore, the display data of all m subframes will satisfy the following formula (4) ~ formula (7): gn=I*k+x.......... ................................................... .........(4)
if n=0,x=r.................................................................................(5) if n=0,x=r................................... ................................................(5)
if 0<n≦d,x=k..........................................................................(6) if 0<n≦d,x=k................................................ ...................................(6)
if n>d,x=0................................................................................(7) if n>d,x=0................................... ...................................(7)
由上式(2)可知,d=G[7:4]為一4位中繼資料,因此其十進位最大值為15。另一方面,n用以表示子幀顯示數據的序號,故0≦n≦m-1=15。依此設計,第0(即n=0)個子幀顯示數據的灰階值g0=I*k+x,第1個至第d個子幀顯示數據的灰階值gn=I*k+k,且第d+1個至第m-1個子幀顯示數據的灰階值gn=I*k。如此,可以試算所有m個子幀顯示數據的總和為:m*I*k+d*k+r=(m*I+d)*k+r=(16*G[15:8]+G[7:4])*16+G[3:0]=G[15:0]。故而,可以確定利用上式(1)~式(7)的確可以將所述前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據。同時,對於m=16個子幀顯示數據而言,其包含之S個子幀整數位元為所述幀顯示數據的所述L個顯示數據位元的前S個高位位元(即,I=G[15:8]),其所包含之P個整幀餘數位元為所述幀顯示數據的L個顯示數據位元的後P個低位位元(即,r=G[3:0]),且其所包含之Q個子幀餘數位元(即,d=G[7:4]) 為所述幀顯示數據的L個顯示數據位元之中排除所述前S個高位位元和所述P個低位位元之後的中間Q個位元。換句話說,S+P+Q=L。 It can be known from the above formula (2) that d=G[7:4] is a 4-bit metadata, so the maximum value of the decimal is 15. On the other hand, n is used to represent the serial number of the sub-frame display data, so 0≦n≦m-1=15. According to this design, the gray scale value g0=I*k+x of the 0th (i.e. n=0) subframe display data, the gray scale value gn=I*k+k of the first to dth subframe display data, And the grayscale value gn=I*k of the display data of the d+1th to m−1th subframes. In this way, the sum of display data of all m subframes can be calculated as: m*I*k+d*k+r=(m*I+d)*k+r=(16*G[15:8]+G[ 7:4])*16+G[3:0]=G[15:0]. Therefore, it can be determined that the previous frame display data can indeed be divided into m sub-frame display data including sequence number 0 to sequence number m−1 by using the above formulas (1) to (7). At the same time, for m=16 subframe display data, the S subframe integer bits included in it are the first S high order bits of the L display data bits of the frame display data (that is, I=G [15:8]), the P remaining bits of the entire frame included are the last P low-order bits of the L display data bits of the frame display data (that is, r=G[3:0]) , and the Q subframe remainder bits contained in it (ie, d=G[7:4]) Among the L display data bits of the frame display data, middle Q bits after the first S high-order bits and the P low-order bits are excluded. In other words, S+P+Q=L.
如圖3所示,方法流程接著執行步驟S2:依據含有低位0之數量對序號1至序號m-1的m-1個所述子幀顯示數據進行顯示次序之先後安排。更詳細地說明,對於序號1至序號m-1的任一個子幀顯示數據而言,其皆包含S個子幀整數位元(即,I=G[15:8])與Q個子幀餘數位元(即,d=G[7:4])。顯然地,與I=G[15:8]相比,d=G[7:4]為低位元數據。因此,決定子幀顯示數據之顯示次序的安排時,可計算d=G[7:4](即,4位元資料)所帶有的位元0之數量。原則上,含有越多的低位的位0之數量的子幀顯示數據會優先進行顯示,亦即,具有優先顯示次序。 As shown in FIG. 3 , the method flow proceeds to step S2: arranging the display order of the m-1 sub-frame display data from sequence number 1 to sequence number m-1 according to the number of low-order 0s. In more detail, for any subframe display data from sequence number 1 to sequence number m−1, it includes S subframe integer bits (ie, I=G[15:8]) and Q subframe remainder bits element (ie, d=G[7:4]). Obviously, compared with I=G[15:8], d=G[7:4] is low-bit metadata. Therefore, when determining the arrangement of the display order of the subframe display data, the number of bit 0s carried by d=G[7:4] (ie, 4-bit data) can be calculated. In principle, the sub-frame display data that contains more low-order bit 0s will be displayed preferentially, that is, has a priority display order.
值得說明的是,子幀顯示數據的灰階值,與其序號n以及d大小關係有關。以多個二進位位元表示n序號,若n序號低位是0,在將n與d的比較後,發現不需要d相應的低位元。因此,在將n序號進行排序後,將低位為0越多的序號(0序號除外)的顯示順序往後排,則可以提前將d的低位元和r的存儲空間提前釋放出來。舉例而言,序號0之所述子幀顯示數據包含S個子幀整數位元(即,I=G[15:8])、Q個子幀餘數位元(即,d=G[7:4])、以及P個整幀餘數位元(即,r=G[3:0]),因此,在接收一上位機2所傳送的一幀同步信號以及一幀顯示數據之後(即,步驟S3),接著執行步驟S4:在完成所述幀顯示數據的接收之後,驅動該顯示面板依顯示次序顯示m個子幀顯示數據,且在每個所述子幀顯示數據完成顯示之後,以覆蓋的方式將所述幀顯示數據的部分位元儲存在該儲存單元儲存所述子幀顯示數據之儲存空間,直至所有子幀顯示數據的全部顯示,該儲存單元原儲存所述前幀顯示數據之儲存空間由幀顯示數據所完全覆蓋。 It is worth noting that the grayscale value of the subframe display data is related to its sequence number n and d. Multiple binary bits are used to represent the n serial number. If the lower bit of the n serial number is 0, after comparing n with d, it is found that the corresponding lower bit of d is not needed. Therefore, after the n serial numbers are sorted, the display order of the serial numbers whose lower bits are more 0 (except the 0 serial number) is rearranged, so that the lower bits of d and the storage space of r can be released in advance. For example, the subframe display data of sequence number 0 includes S subframe integer bits (ie, I=G[15:8]), Q subframe remainder bits (ie, d=G[7:4] ), and P whole frame remainder bits (that is, r=G[3:0]), therefore, after receiving a frame synchronization signal and a frame of display data transmitted by a host computer 2 (that is, step S3) , and then perform step S4: after completing the reception of the frame display data, drive the display panel to display m sub-frame display data in display order, and after each sub-frame display data is displayed, overlay the Some bits of the frame display data are stored in the storage unit to store the storage space of the sub-frame display data until all the sub-frame display data are fully displayed. The storage unit originally stored the storage space of the previous frame display data by Frames are shown completely covered by the data.
依據本發明之設計,該顯示驅動電路12在完成所述前幀顯示數據之所有顯示數據位元的接收之後,便接著使用序號0之所述子幀顯示數據對該顯示面板11進行圖像顯示驅動,接著依顯示次序之先後安排序號1至序號m-1之所述子幀顯示數據對該顯示面板進行圖像顯示驅動。舉例而言,m個所
述子幀顯示數據的顯示次序為0,15,7,11,3,13,5,9,1,14,6,10,2,12,4,8。應可理解,所述(當前)幀顯示數據同樣包含L個顯示數據位元,L為正整數,S+P+Q=L。
According to the design of the present invention, after the
換句話說,在應用本發明之方法的情況下,顯示驅動電路12可以一邊進行前幀顯示數據之顯示驅動,同時可以一邊對已接收的當前幀顯示數據進行資料儲存,從而實現用小於2個乒乓幀SRAM空間,完整存儲乒乓幀,並連續顯示。補充說明的是,在可行的實施例中,所述觸發顯示信號傳送自該上位機2,或由該顯示驅動電路12對所述幀同步信號進行一移位元處理而自行產生。
In other words, in the case of applying the method of the present invention, the
圖4顯示一幀同步信號(Video_Vsync)、一幀顯示數據(Video)、一觸發顯示信號(Display_Vsunc)、與一子幀顯示數據(Display group)的工作時序圖。舉例而言,上位機2發送一個幀同步信號(Video_Vsync)和一幀顯示數據(Video),且在顯示數據發送完畢後傳送一個觸發顯示信號(Display_Vsunc)以發起幀同步。依據本發明之設計,顯示驅動電路12在完成所述前幀顯示數據之所有顯示數據位元的接收之後,立即接著使用序號0之所述子幀顯示數據(即,g0)對該顯示面板11進行圖像顯示驅動。在序號0之所述子幀顯示數據被顯示完畢之後,該儲存單元121釋放出原本儲放所述P個整幀餘數位元(即,r=G[3:0])之儲存空間,用以儲存(當前)幀顯示數據所包含的L個顯示數據位元之中對應的P個。並且,在序號1至序號m-1的m-1個所述子幀顯示數據依其顯示次序而被顯示完畢之後,該儲存單元121系逐位元釋放原本儲放所述Q個子幀餘數位元(即,d=G[7:4])的儲存空間,用以儲存(當前)幀顯示數據所包含的L個顯示數據位元之中對應的Q個。在最後一個子幀顯示數據被顯示完畢之後,該儲存單元121釋放原本儲放所述S個子幀整數位元(即,I=G[15:8])的儲存空間,用以儲存幀顯示數據所包含的L個顯示數據位元之中對應的S個。
FIG. 4 shows a working timing diagram of a frame synchronization signal (Video_Vsync), a frame of display data (Video), a trigger display signal (Display_Vsunc), and a subframe of display data (Display group). For example, the host computer 2 sends a frame synchronization signal (Video_Vsync) and a frame of display data (Video), and sends a trigger display signal (Display_Vsunc) to initiate frame synchronization after the display data is sent. According to the design of the present invention, after the
亦即,m個所述子幀顯示數據的顯示次序為0,15,7,11,3,13,5,9,1,14,6,10,2,12,4,8。由於序號0的子幀顯示數據包含不打散整幀餘數位元d=G[7:4],或稱不打散位,因此序號0的子幀顯示數據優先顯示完畢。具體操作是將整幀顯示數據G[15:0]從儲存單元121(即,SRAM)讀出,計算出子幀顯示數據 之中的子幀整數位元I(如上式(3)所示,I=G[15:8]),同時計算出子幀餘數位元r(如上式(1)所示,r=G[3:0])。進一步地,依據上式(4)~(7),可以計算出第0個(即,序號n為)子幀顯示數據的灰階值g0=I*k+x=G[15:8]*16+g[3:0]。接著,將顯示數據G[15:4]按位元寫回SRAM(即,儲存單元121),寫回時,將所有通道的相同位元組成一個16位元組以替換SRAM原來儲存的一幀顯示數據G[15:0],藉此方式縮短資料存儲空間。 That is to say, the display order of the m sub-frame display data is 0, 15, 7, 11, 3, 13, 5, 9, 1, 14, 6, 10, 2, 12, 4, 8. Since the display data of the subframe with serial number 0 contains the remainder bits d=G[7:4] of the whole frame without breaking up, or called non-breaking bits, the display data of the subframe with serial number 0 is displayed first. The specific operation is to read the entire frame display data G[15:0] from the storage unit 121 (ie, SRAM), and calculate the sub-frame display data Among them, the subframe integer bit I (as shown in the above formula (3), I=G[15:8]), and calculate the subframe remainder bit r at the same time (as shown in the above formula (1), r=G[ 3:0]). Further, according to the above formulas (4)~(7), the grayscale value g0=I*k+x=G[15:8]* of the subframe display data of the 0th (that is, the serial number n) can be calculated 16+g[3:0]. Next, the display data G[15:4] is written back to the SRAM (that is, the storage unit 121) by bit. When writing back, the same bits of all channels are formed into a 16-byte group to replace a frame originally stored by the SRAM. Display data G[15:0], thereby reducing data storage space.
完成序號0的子幀顯示數據之顯示以後,接著依據排序完成序號15、7、11、3、13、5、9、1的子幀顯示數據之顯示。首先,在顯示序號n為15至10的子幀顯示數據的期間,自SRAM中將灰階資料G[15:4]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4],接著計算出子幀顯示數據gn=i*K+x。n可利用4位資料表示,因此可以計算當n<=g[7:4],則x=K,否則x=0。
After the display of the sub-frame display data of sequence number 0 is completed, the display of the sub-frame display data of
接著,在顯示序號n為2的子幀顯示數據的期間,自SRAM中將灰階資料G[15:4]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4],接著計算出子幀顯示數據g2=i*K+x。當2<=g[7:4],則x=K,否則x=0。 Next, during the period of displaying the subframe display data whose serial number n is 2, read the grayscale data G[15:4] from the SRAM, and then calculate the subframe integer bit I=G[15:8], and calculate Get the remainder bits of the whole frame (or called non-breaking bits) d=G[7:4], and then calculate the sub-frame display data g2=i*K+x. When 2<=g[7:4], then x=K, otherwise x=0.
在顯示序號n為2的子幀顯示數據的期間,自SRAM中將灰階資料G[15:4]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4],接著計算出子幀顯示數據g2=i*K+x。當2<=g[7:4],則x=K,否則x=0。同時,將每個顯示數據G[15:5]寫回SRAM,替換SRAM原來圖元值G[15:4],縮短幀資料存儲空間。 During the period of displaying the subframe display data whose serial number n is 2, read out the grayscale data G[15:4] from the SRAM, then calculate the subframe integer bit I=G[15:8], and calculate the integer Frame remainder bits (or non-break bits) d=G[7:4], and then the sub-frame display data g2=i*K+x is calculated. When 2<=g[7:4], then x=K, otherwise x=0. At the same time, write each display data G[15:5] back to the SRAM, replace the original SRAM primitive value G[15:4], and shorten the frame data storage space.
在顯示序號n為12的子幀顯示數據的期間,自SRAM中將灰階資料G[15:5]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4]x2,接著計算出子幀顯示數據g12=i*K+x。當12<=g[7:4]x2,則x=K,否則x=0。同時,將每個顯示數據G[15:6]寫回SRAM,替換SRAM原來圖元值G[15:5],縮短幀資料存儲空間。 During the period of displaying the subframe display data whose serial number n is 12, read out the grayscale data G[15:5] from the SRAM, then calculate the subframe integer bit I=G[15:8], and calculate the integer The frame remainder bit (or non-break bit) d=G[7:4]x2, and then the sub-frame display data g12=i*K+x is calculated. When 12<=g[7:4]x2, then x=K, otherwise x=0. At the same time, each display data G[15:6] is written back to the SRAM to replace the original value G[15:5] of the SRAM to shorten the frame data storage space.
在顯示序號n為4的子幀顯示數據的期間,自SRAM中將灰階資料G[15:6]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4]x4,接著計算出子幀顯示數據g4=i*K+x。當4<=g[7:4]x4,則x=K,否則x=0。同時,將每個顯示數據G[15:7]寫回SRAM,替換SRAM原來圖元值G[15:6],縮短幀資料存儲空間。 During the period of displaying the subframe display data whose serial number n is 4, read out the grayscale data G[15:6] from the SRAM, then calculate the subframe integer bit I=G[15:8], and calculate the integer The frame remainder bit (or non-break bit) d=G[7:4]x4, and then the sub-frame display data g4=i*K+x is calculated. When 4<=g[7:4]x4, then x=K, otherwise x=0. At the same time, write each display data G[15:7] back to SRAM, replace the original SRAM primitive value G[15:6], and shorten the frame data storage space.
在顯示序號n為8的子幀顯示數據的期間,自SRAM中將灰階資料G[15:7]讀出,接著算出子幀整數位元I=G[15:8],並計算出整幀餘數位元(或稱不打散位)d=G[7:4]x8,接著計算出子幀顯示數據g8=i*K+x。當8<=g[7:4]x8,則x=K,否則x=0。同時,釋放儲存空間內所儲存之上一幀顯示數據,即釋放所有G[15:7]的存儲空間。 During the period of displaying the subframe display data whose serial number n is 8, read out the grayscale data G[15:7] from the SRAM, then calculate the subframe integer bit I=G[15:8], and calculate the integer The frame remainder bit (or non-break bit) d=G[7:4]x8, and then the sub-frame display data g8=i*K+x is calculated. When 8<=g[7:4]x8, then x=K, otherwise x=0. At the same time, releasing the display data of the last frame stored in the storage space means releasing all the storage space of G[15:7].
由前述說明可知,習知的乒乓幀作法是暫存器的儲存空間至少能夠同時儲存兩個幀顯示數據,然而,應用有本發明之方法的顯示驅動電路12所搭載的儲存單元121的存儲空間可以小於適用乒乓幀之儲存器,從而具有低成本之優勢。 As can be seen from the foregoing description, the conventional ping-pong frame method is that the storage space of the temporary register can store at least two frames of display data at the same time. It can be smaller than the memory suitable for ping-pong frames, so it has the advantage of low cost.
如此,上述已完整且清楚地說明本發明之一種顯示數據之儲存和顯示方法;並且,經由上述可得知本發明具有下列優點: In this way, the above has completely and clearly described a method for storing and displaying display data of the present invention; and, through the above, it can be known that the present invention has the following advantages:
(1)本發明揭示一種顯示數據之儲存和顯示方法,其技術特徵在於,上位機完成按圖元發送一(當前)幀顯示數據之後立即發起幀同步信號,使顯示驅動電路將上一幀顯示數據自SRAM讀出,並分為包括序號0至序號m-1的m個子幀顯示數據,且對其進行顯示次序之先後排序。在驅動顯示面板顯示完第一個子幀後(如:序號0子幀),即可將已接收的(當前)幀顯示數據對應的位元寫入SRAM以替換完成顯示之子幀所對應的位元。因此,通過調整子幀顯示順序,可以讓前幀顯示數據之中的低位的位元優先被顯示完畢,然後讓當前幀顯示數據之中對應的低位位元被寫入之中,如此反復,直到所有子幀顯示完畢,則當前幀顯示數據的所有位元也全部寫入SRAM之中。依此作法,顯示驅動電路可以一邊進行前幀顯示數據之顯示驅動,同時可以一邊對已接收的當前幀顯 示數據進行數據儲存,從而實現用小於2個乒乓幀SRAM空間,完整存儲乒乓幀,並連續顯示。。 (1) The present invention discloses a method for storing and displaying display data. Its technical feature is that the host computer immediately initiates a frame synchronization signal after sending a (current) frame of display data according to the graphics element, so that the display drive circuit will display the previous frame. The data is read from the SRAM, and is divided into m subframes including sequence number 0 to sequence number m−1 to display data, and the display sequence is sorted. After the display panel is driven to display the first subframe (such as: subframe number 0), the bit corresponding to the received (current) frame display data can be written into the SRAM to replace the bit corresponding to the subframe that has been displayed Yuan. Therefore, by adjusting the display order of the subframes, the low-order bits in the display data of the previous frame can be displayed first, and then the corresponding low-order bits in the display data of the current frame can be written into it, and so on until After all the sub-frames are displayed, all bits of the current frame display data are also written into the SRAM. In this way, the display driving circuit can display the display data of the previous frame while displaying the received current frame. Display data for data storage, so as to realize the use of less than 2 ping-pong frame SRAM space, complete storage of ping-pong frames, and continuous display. .
(2)本發明同時提供一種顯示裝置,其包括一顯示面板與一顯示驅動電路,其特徵在於,該顯示驅動電路利用如前所述本發明之顯示數據之儲存和顯示方法,從而按位元儲存一上位機所傳送的一幀顯示數據,以及依據一前幀顯示數據對該顯示面板進行圖像顯示驅動。在一實施例中,該顯示面板為選自于由發光二極體顯示面板、量子點發光二極體顯示面板、微發光二極體顯示面板、次毫米發光二極體顯示面板、鈣鈦礦發光二極體顯示面板、和有機發光二極體顯示面板所組成的群組之中的一種平面顯示面板。 (2) The present invention also provides a display device, which includes a display panel and a display drive circuit, characterized in that the display drive circuit utilizes the method for storing and displaying display data of the present invention as described above, thereby A frame of display data sent by a host computer is stored, and the display panel is driven for image display according to a previous frame of display data. In one embodiment, the display panel is selected from a light emitting diode display panel, a quantum dot light emitting diode display panel, a micro light emitting diode display panel, a submillimeter light emitting diode display panel, a perovskite A flat display panel in the group consisting of a light emitting diode display panel and an organic light emitting diode display panel.
(3)本發明同時提供一種資訊處理裝置,其具有如前所述本發明之顯示裝置,且該資訊處理裝置為選自於由電視牆、智慧手機、智慧手錶、智慧手環、平板電腦、筆記型電腦、一體式電腦、和門口機裝置所組成群組之中的一種電子裝置。 (3) The present invention also provides an information processing device, which has the display device of the present invention as described above, and the information processing device is selected from video walls, smart phones, smart watches, smart bracelets, tablet computers, An electronic device in the group consisting of notebook computers, all-in-one computers, and outdoor station devices.
必須加以強調的是,前述本案所揭示者乃為較佳實施例,舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者,俱不脫本案之專利權範疇。 It must be emphasized that what is disclosed in the above-mentioned case is a preferred embodiment, and all partial changes or modifications derived from the technical ideas of this case and easily deduced by those familiar with the technology are all inseparable from the patent of this case. category of rights.
綜上所陳,本案無論目的、手段與功效,皆顯示其迥異于習知技術,且其首先發明合於實用,確實符合發明之專利要件,懇請 貴審查委員明察,並早日賜予專利俾嘉惠社會,是為至禱。 In summary, regardless of the purpose, means, and efficacy of this case, it shows that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. I urge your review committee to clearly understand and grant the patent as soon as possible. Society is for the Most Prayer.
S1:將儲存在一儲存單元的一前幀顯示數據分為包括序號0至序號m-1的m個子幀顯示數據 S1: Divide a previous frame display data stored in a storage unit into m sub-frame display data including sequence number 0 to sequence number m-1
S2:依據含有低位0之數量對序號1至序號m-1的m-1個所述子幀顯示數據進行顯示次序之先後安排 S2: Arrange the display order of the m-1 subframe display data from sequence number 1 to sequence number m-1 according to the number of low-order 0s
S3:接收一上位機所傳送的一幀同步信號以及一幀顯示數據 S3: Receive a frame synchronization signal and a frame display data transmitted by a host computer
S4:在完成所述幀顯示數據的接收之後,驅動該顯示面板依顯示次序顯示m個子幀顯示數據,且在每個所述子幀顯示數據完成顯示之後,以覆蓋的方式將所述幀顯示數據的部分位元儲存在該儲存單元儲存所述子幀顯示數據之儲存空間,直至所有子幀顯示數據的全部顯示,該儲存單元原儲存所述前幀顯示數據之儲存空間由幀顯示數據所完全覆蓋 S4: After receiving the frame display data, drive the display panel to display m sub-frame display data in display order, and display the frame in an overlay mode after each sub-frame display data is displayed Some bits of the data are stored in the storage unit storing the storage space of the sub-frame display data until all the sub-frame display data are fully displayed. The storage unit originally stored the storage space of the previous frame display data by the frame display data. full coverage
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