技术领域technical field
本发明申请是关于一种影像传输技术，特别地，是关于一种非对称性影像传输方法及其电子装置。The application of the present invention relates to an image transmission technology, in particular, to an asymmetric image transmission method and an electronic device thereof.
背景技术Background technique
V-by-One的数据传输接口是一种能支持4K甚至8K、1K分辨率的新型移动设备显示接口，其接口由传输影像数据的主要通道(lane)数据信号，以及传输影像相关状态、控制信息(HDP热插入信息、LOCK信息等)的辅助通道信号组成。当传送端和接收端通过此V-by-One接口传输影像数据时，由于是对称性传输，所以传送端与接收端的影像格式要相同。当数据传输接口以三字节模式(three-byte mode)为基础进行传输时，对应的显示通道只有RGB通道，所以传送端只能传输RGB格式影像，无法传输ARGB格式影像，而接收端也只能以RGB格式影像接收，ARGB格式影像就不能在此硬件设计上进行传输。The data transmission interface of V-by-One is a new type of mobile device display interface that can support 4K or even 8K, 1K resolution. Auxiliary channel signal composition of information (HDP hot insert information, LOCK information, etc.). When the transmitting end and the receiving end transmit image data through the V-by-One interface, due to the symmetrical transmission, the image format of the transmitting end and the receiving end must be the same. When the data transmission interface transmits based on the three-byte mode, the corresponding display channel only has RGB channels, so the transmitting end can only transmit images in RGB format, but cannot transmit images in ARGB format, and the receiving end can only transmit images in RGB format. Images in RGB format can be received, but images in ARGB format cannot be transmitted on this hardware design.
然而，接收端若能接收ARGB格式影像的好处在于影像可以有渐层的效果出来，以符合客户设计用户接口的需求。且因影像中的alpha通道(A通道)已被广泛运用在影像中，因此，ARGB格式影像在三字节模式不能进行传输的限制有必要被打破。However, if the receiver can receive images in ARGB format, the advantage is that the images can have a gradient effect to meet the needs of customers in designing user interfaces. And because the alpha channel (A channel) in the image has been widely used in the image, therefore, the restriction that the ARGB format image cannot be transmitted in the three-byte mode must be broken.
发明内容Contents of the invention
鉴于此，本发明申请提出一种非对称性影像传输方法，适用于传送端与接收端之间传输影像信号。该非对称性影像传输方法包含：传送端将影像信号中符合四字节模式(four-byte mode)的第一影像画素长度修改为三字节模式(three-byte mode)的第二影像画素长度。在三字节模式下，通过传输接口的三传输通道分别传输各自的第二影像画素长度的多个影像画素。接收端将该些影像画素的第二影像画素长度修改为四字节模式的第一影像画素长度，以获得影像信号。In view of this, the present application proposes an asymmetric image transmission method, which is suitable for transmitting image signals between the transmitting end and the receiving end. The asymmetric image transmission method includes: the transmitting end modifies the pixel length of the first image conforming to the four-byte mode (four-byte mode) in the image signal to the second image pixel length of the three-byte mode (three-byte mode). . In the three-byte mode, the three transmission channels of the transmission interface respectively transmit a plurality of video pixels of the second video pixel length. The receiving end modifies the second video pixel length of the video pixels to the first video pixel length of the four-byte mode to obtain a video signal.
本发明申请还提出一种非对称性影像传输的电子装置，包含传送端、传输接口及接收端。传送端将影像信号中符合四字节模式的第一影像画素长度修改为三字节模式的第二影像画素长度。传输接口电性连接传送端，传输接口在三字节模式下，以通过三传输通道分别传输各自的第二影像画素长度的多个影像画素。接收端电性连接传输接口，接收端将该些影像画素的第二影像画素长度修改为四字节模式的第一影像画素长度，以获得影像信号。The application of the present invention also proposes an electronic device for asymmetric image transmission, which includes a transmitting end, a transmission interface and a receiving end. The transmitting end modifies the first video pixel length conforming to the 4-byte mode in the video signal to the second video pixel length of the 3-byte mode. The transmission interface is electrically connected to the transmitting end, and the transmission interface is in the three-byte mode to respectively transmit a plurality of image pixels of the second image pixel length through three transmission channels. The receiving end is electrically connected to the transmission interface, and the receiving end modifies the second image pixel length of the image pixels to the first image pixel length in four-byte mode to obtain an image signal.
依据一些实施例，四字节模式为ARGB模式，三字节模式为RGB模式。According to some embodiments, the four-byte mode is ARGB mode, and the three-byte mode is RGB mode.
依据一些实施例，三传输通道进一步还包含R通道、G通道及B通道。According to some embodiments, the three transmission channels further include R channel, G channel and B channel.
依据一些实施例，第一影像画素长度*4的画素数量等于第二影像画素长度*3的画素数量。According to some embodiments, the number of pixels of the first video pixel length*4 is equal to the number of pixels of the second video pixel length*3.
依据一些实施例中，传输接口为V-by-One传输接口。According to some embodiments, the transmission interface is a V-by-One transmission interface.
综上所述，在不改变硬件设计的前提下，本发明申请修改影像画素长度，让影像信号可以进行不对称的传输，使ARGB格式影像得以在三字节模式下进行传输，以显示多样化的影像效果，所以可有效解决不对称传输上的限制，并可节省修改硬件的费用。To sum up, on the premise of not changing the hardware design, the present invention applies to modify the pixel length of the image, so that the image signal can be transmitted asymmetrically, so that the ARGB format image can be transmitted in the three-byte mode to display diversity. image effects, so it can effectively solve the limitation of asymmetric transmission, and save the cost of modifying hardware.
附图说明Description of drawings
为让本申请的上述和其他目的、特征、优点与实施例能够更明显易懂，结合附图进行如下说明：In order to make the above and other purposes, features, advantages and embodiments of the present application more obvious and understandable, the following descriptions are made in conjunction with the accompanying drawings:
图1为根据本发明申请一个实施例的电子装置的方块示意图。FIG. 1 is a schematic block diagram of an electronic device according to an embodiment of the present invention.
图2为根据本发明申请一个实施例的非对称性影像传输方法的流程示意图。FIG. 2 is a schematic flowchart of an asymmetric image transmission method according to an embodiment of the present invention.
图3为根据本发明申请一个实施例的传输RGB格式影像的传输示意图。FIG. 3 is a schematic diagram of transmitting images in RGB format according to an embodiment of the present invention.
图4为根据本发明申请一个实施例的传输ARGB格式影像的传输示意图。FIG. 4 is a schematic diagram of transmitting images in ARGB format according to an embodiment of the present invention.
符号说明：Symbol Description:
10：电子装置10: Electronic device
12：传送端12: Transmitter
122：第一转换单元122: first conversion unit
14：传输接口14: Transmission interface
16：接收端16: Receiver
162：第二转换单元162: second conversion unit
S10～S14：步骤S10～S14: steps
具体实施方式Detailed ways
ARGB格式影像采用的色彩是RGB再加上不透明度参数，色彩可以属于任何一种RGB颜色空间，不透明参数则表示为alpha通道(A通道)，若一个画素的A通道数值为0％，那它就是完全透明的(也就是看不见的)，而A通道数值为100％则表示一个完全不透明的画素，以利用在0％和100％之间的数值让画素可以通过背景显示出来，使影像有渐层的显示效果(半透明性)。因此，为显示多样化的影像效果，本发明申请打破了在三字节模式下的RGB通道不能进行传输ARGB格式影像的限制，让传输接口的兼容性提高，可以传输RGB格式影像和ARGB格式影像。The color used in the ARGB format image is RGB plus the opacity parameter. The color can belong to any RGB color space, and the opacity parameter is expressed as the alpha channel (A channel). If the value of the A channel of a pixel is 0%, then it It is completely transparent (that is, invisible), and the value of the A channel is 100%, which means a completely opaque pixel, so that the pixel can be displayed through the background by using the value between 0% and 100%, so that the image has The display effect (translucency) of the gradient. Therefore, in order to display a variety of image effects, the application of the present invention breaks the limitation that the RGB channel in the three-byte mode cannot transmit ARGB format images, improves the compatibility of the transmission interface, and can transmit RGB format images and ARGB format images .
举例来说，视频(video)信号的影像格式通常为三字节模式，用户接口(UI)的影像格式通常为四字节模式，而为了将用户接口的影像信号传输在视频信号的传输接口上，就必须将四字节模式的影像信号修改为三字节模式的影像信号，以便在不改变硬件设计的前提下传输影像信号。For example, the image format of the video (video) signal is usually three-byte mode, and the image format of the user interface (UI) is usually four-byte mode, and in order to transmit the image signal of the user interface on the transmission interface of the video signal , it is necessary to modify the video signal in the four-byte mode to the video signal in the three-byte mode, so as to transmit the video signal without changing the hardware design.
图1为根据本发明申请一个实施例的电子装置的方块示意图，请参阅图1所示，一种电子装置10包含传送端12、传输接口14以及接收端16。传送端12电性连接传输接口14，传输接口14电性连接接收端16，以利用传输接口14在传送端12与接收端16之间传输影像。在一个实施例中，传送端12为图形直接内存访问(Graphic direct memory access，GDMA)芯片，接收端16为写入直接内存访问(Write direct memory access，WDMA)芯片，传输接口14为V-by-One传输接口，但不限于此。FIG. 1 is a schematic block diagram of an electronic device according to an embodiment of the present invention. Referring to FIG. 1 , an electronic device 10 includes a transmitting end 12 , a transmission interface 14 and a receiving end 16 . The transmitting end 12 is electrically connected to the transmission interface 14 , and the transmission interface 14 is electrically connected to the receiving end 16 , so as to transmit images between the transmitting end 12 and the receiving end 16 through the transmission interface 14 . In one embodiment, the transmitting end 12 is a Graphic direct memory access (GDMA) chip, the receiving end 16 is a Write direct memory access (WDMA) chip, and the transmission interface 14 is a V-by -One transmission interface, but not limited to this.
图2为根据本发明申请一个实施例的非对称性影像传输方法的流程示意图，请同时参阅图1及图2所示，非对称性影像传输方法包含：传送端12在接收到四字节模式的影像信号时，此四字节模式为ARGB模式，如步骤S10所示，传送端12会将影像信号中符合四字节模式的第一影像画素长度修改为符合三字节模式的第二影像画素长度，此三字节模式为RGB模式，其中第二影像画素长度会大于第一影像画素长度。如步骤S12所示，在三字节模式下，通过传输接口14的三传输通道分别传输各自的第二影像画素长度的多个影像画素，例如传输接口14包含R通道、G通道及B通道，以分别在R通道、G通道及B通道传输具有第二影像画素长度的影像画素。最后如步骤S14所示，接收端16在接收到符合第二影像画素长度的影像画素后，接收端16会将这些影像画素的第二影像画素长度修改还原为符合四字节模式的第一影像画素长度，以获得原有的影像信号，如此即可在接收端16呈现出ARGB格式影像的多样化影像效果。Figure 2 is a schematic flow chart of an asymmetric image transmission method according to an embodiment of the present invention, please refer to Figure 1 and Figure 2 at the same time, the asymmetric image transmission method includes: the transmitting end 12 receives the four-byte When the image signal is an image signal, the four-byte mode is the ARGB mode. As shown in step S10, the transmitting end 12 will modify the pixel length of the first image conforming to the four-byte mode in the image signal to the second image conforming to the three-byte mode Pixel length, the three-byte mode is RGB mode, where the pixel length of the second image is greater than the pixel length of the first image. As shown in step S12, in the three-byte mode, the three transmission channels of the transmission interface 14 respectively transmit a plurality of video pixels of the second video pixel length respectively, for example, the transmission interface 14 includes an R channel, a G channel and a B channel, The video pixels with the second video pixel length are respectively transmitted on the R channel, the G channel and the B channel. Finally, as shown in step S14, after the receiving end 16 receives the image pixels conforming to the second image pixel length, the receiving end 16 will modify and restore the second image pixel length of these image pixels to the first image conforming to the four-byte mode The pixel length is used to obtain the original image signal, so that various image effects of ARGB format images can be presented at the receiving end 16 .
其中，由于四字节模式具有ARGB四位，三字节模式具有RGB三位，当传输的总影像画素数量相同时，第二影像画素长度会大于第一影像画素长度，且第一影像画素长度*4的画素数量等于第二影像画素长度*3的画素数量。Wherein, since the four-byte mode has four bits of ARGB, and the three-byte mode has three bits of RGB, when the total number of transmitted image pixels is the same, the second image pixel length will be greater than the first image pixel length, and the first image pixel length The number of pixels of *4 is equal to the number of pixels of the pixel length of the second image*3.
在一个实施例中，传送端12还包含第一转换单元122，传送端12利用第一转换单元122将四字节模式的第一影像画素长度修改为符合三字节模式的第二影像画素长度。接收端16还包含第二转换单元162，接收端16利用第二转换单元162将这些影像画素的第二影像画素长度修改为符合四字节模式的第一影像画素长度，以还原为原本的影像信号。In one embodiment, the transmitting end 12 further includes a first converting unit 122, and the transmitting end 12 uses the first converting unit 122 to modify the first video pixel length in the four-byte mode to the second video pixel length conforming to the three-byte mode . The receiving end 16 also includes a second converting unit 162, and the receiving end 16 uses the second converting unit 162 to modify the second image pixel length of these image pixels to the first image pixel length conforming to the four-byte mode, so as to restore the original image Signal.
在一个实施例中，图3为根据本发明申请一个实施例的传输RGB格式影像的传输示意图，请同时参阅图1及图3所示，在RGB模式下传输具有RGB格式影像的影像信号，传送端12分别利用传输接口14的传输通道(R通道、G通道及B通道)分别传输具有相同影像画素长度的多个影像画素，此时无须修改影像画素长度，每一影像画素长度为1920pixels。每一列的影像画素经过传输接口14传输至接收端16，接收端16亦会接收到具有相同影像画素长度的影像画素，以获得具有RGB格式影像的影像信号。In one embodiment, FIG. 3 is a schematic diagram of transmitting images in RGB format according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. The terminal 12 uses the transmission channels (R channel, G channel, and B channel) of the transmission interface 14 to transmit multiple video pixels with the same video pixel length. At this time, there is no need to modify the video pixel length, and the video pixel length is 1920pixels. The image pixels of each row are transmitted to the receiving end 16 through the transmission interface 14, and the receiving end 16 will also receive the image pixels with the same image pixel length to obtain an image signal with an image in RGB format.
在一个实施例中，图4为根据本发明申请一个实施例的传输ARGB格式影像的传输示意图，请同时参阅图1及图4所示，在RGB模式下传输ARGB格式影像时，传送端12原本接收到的影像信号为符合ARGB模式且具有第一影像画素长度的多列影像画素，此时，第一影像画素长度为1920pixels(总影像画素数量为1920*4＝7680pixels)。为了在RGB模式的传输接口14上传输影像信号，传送端12的第一转换单元122会将全部的影像画素由ARGB模式的第一影像画素长度修改为RGB模式的第二影像画素长度，如表1所示，由于只在RGB模式下的R通道、G通道及B通道传输，所以影像画素长度变长了，此时第二影像画素长度为2560pixels(总影像画素数量为2560*3＝7680pixels)。并在此RGB模式下，利用传输接口14的三传输通道分别将具有第二影像画素长度的影像画素传输至接收端16，亦即，在R通道传输具有第二影像画素长度的影像画素(ABGRABGR…)，在G通道传输具有第二影像画素长度的影像画素(RABGRABG…)，以及在B通道传输具有第二影像画素长度的影像画素(GRABGRAB…)，以传完整列的影像画素。接收端16在接收到具有第二影像画素长度的影像画素之后，接收端16的第二转换单元162会将全部的影像画素由RGB模式的第二影像画素长度再修改为ARGB模式的第一影像画素长度，如表2所示，此时2560pixels的第二影像画素长度将会被修改还原为1920pixels的第一影像画素长度，且接收端16获得的影像信号为ARGB格式影像。因此，具有ARGB格式影像的影像信号即可凭借前述修改影像画素长度的方式，从传送端12顺利经由RGB模式的传输接口14传输至接收端16，所以可在只有较少显示通道的硬件下传输ARGB格式影像，并在接收端16显示ARGB格式影像。In one embodiment, FIG. 4 is a schematic diagram of transmitting images in ARGB format according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 4 at the same time. When transmitting ARGB format images in RGB mode, the transmitting end 12 originally The received video signal is multiple columns of video pixels conforming to the ARGB mode and having a first video pixel length. At this time, the first video pixel length is 1920 pixels (the total number of video pixels is 1920*4=7680 pixels). In order to transmit image signals on the transmission interface 14 in RGB mode, the first conversion unit 122 of the transmitting end 12 will modify all the image pixels from the first image pixel length in ARGB mode to the second image pixel length in RGB mode, as shown in the table As shown in 1, since the R channel, G channel, and B channel are only transmitted in RGB mode, the length of the image pixel becomes longer. At this time, the length of the second image pixel is 2560pixels (the total number of image pixels is 2560*3=7680pixels) . And in this RGB mode, use the three transmission channels of the transmission interface 14 to transmit the image pixels with the second image pixel length to the receiving end 16 respectively, that is, transmit the image pixels with the second image pixel length in the R channel (ABGRABGR . . . ), transmit the video pixels with the second video pixel length (RABGRABG...) on the G channel, and transmit the video pixels with the second video pixel length (GRABGRAB...) on the B channel, so as to transmit a complete row of video pixels. After the receiving end 16 receives the image pixels with the second image pixel length, the second converting unit 162 of the receiving end 16 will modify all the image pixels from the second image pixel length in RGB mode to the first image in ARGB mode The pixel length, as shown in Table 2, at this time, the pixel length of the second image of 2560 pixels will be modified and restored to the pixel length of the first image of 1920 pixels, and the image signal obtained by the receiving end 16 is an ARGB format image. Therefore, the image signal with the ARGB format image can be successfully transmitted from the transmitting end 12 to the receiving end 16 via the RGB mode transmission interface 14 by means of the above-mentioned method of modifying the image pixel length, so it can be transmitted under the hardware with only a few display channels ARGB format image, and display the ARGB format image on the receiving end 16.
表1传送端输出的影像画素格式Table 1 Image pixel format output by the transmitter
表2接收端转换后的影像画素格式Table 2 Image pixel format converted by the receiving end
因此，在不改变硬件设计的前提下，本发明申请修改影像画素长度，让影像信号可以进行不对称的传输，使ARGB格式影像得以在三字节模式的硬件下进行传输，以显示多样化的影像效果，所以可有效解决不对称传输上的限制，并可节省修改硬件的费用。Therefore, under the premise of not changing the hardware design, the present invention applies to modify the length of the image pixel, so that the image signal can be transmitted asymmetrically, so that the ARGB format image can be transmitted under the hardware of the three-byte mode to display a variety of Image effects, so it can effectively solve the limitation of asymmetric transmission, and save the cost of modifying hardware.
以上所述的实施例仅为说明本发明申请的技术构思和特征，其目的在于使本领域普通技术人员能够了解本发明申请的内容并据以实施，应当不能以此限定本发明申请的保护范围，即凡是依据本发明申请所公开的发明构思所作的等同变化或调整，仍然属于本发明专利保护范围内。The above-described embodiments are only to illustrate the technical concept and characteristics of the present application, and its purpose is to enable those of ordinary skill in the art to understand the content of the present application and implement it accordingly, and should not limit the protection scope of the present application. , that is, any equivalent changes or adjustments made based on the inventive concept disclosed in the application for the present invention still fall within the protection scope of the patent of the present invention.
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| CN202010187033.7ACN113411556B (en) | 2020-03-17 | 2020-03-17 | Asymmetric image transmission method and electronic device thereof |
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