TWI772894B - Video data displaying device and display method thereof - Google Patents

Abstract

A video data displaying device and display method thereof, which comprising a plurality of driving circuit receiving a video data by a video data processor. Each of the driving circuit transforms the video data to form a sub-video data for driving a plurality of display panels. The data transformer performs at least one of following three processes to the video data: replacing the data of the video data, generating an empty gap information differing from the video data, generating an empty gap information inserting into the video data. Hence, only one set video data operated by a data processor is required to drive the display panels showing different frames, and the preprocessing to the display signals is not required, such as adjusting the resolution to the display signal. It will reduce the whole cost of the display system efficiently.

Description

Video data display device and display method thereof

The present invention relates to a device for displaying video information, especially in a display system composed of a plurality of display panels, a device for driving a plurality of display panels to display by using a set of video data. The present invention also relates to a display method of the video data display device.

When there are multiple display panels in the display system, in order to enable each display panel to display different images, generally, multiple sets of different video data need to be used to drive different display panels. To this end, the display system must not only set up its own display driving circuit for each display panel, but also set up its own video data processor for each display panel, so as to use the video data processor to receive and process different display signals respectively. Further, it is provided to different display driving circuits to drive each display panel.

However, setting up multiple video data processors will inevitably increase the cost of the display system. Moreover, the display system may also need to perform various preprocessing (eg, resolution adjustment) on the display signal to form and provide multiple sets of different display data to drive each display panel, which also increases the cost of the display system. Especially in the fields of automotive electronics, Internet of Things or smart home, it is often necessary to apply multiple display panels that only display simple information. In these fields, the cost of driving multiple display panels seems to be an urgent problem for the industry to solve.

In view of this, the present invention provides a video data display device, which can display a plurality of display panels through a set of video data, so as to solve the above problems.

The object of the present invention is to provide a video data display device and a display method thereof, wherein although each display driving circuit receives the same video data by the same video data processor, the data converters of each display driving circuit respectively receive the same video data. The video data can be transformed to form different sub-video data. Accordingly, only one set of video data and one data processor are required to drive several display panels to display different images, and preprocessing such as resolution adjustment of display signals is not required, which can effectively reduce the overall cost of the display system.

The present invention relates to a video data display device, which includes a video data processor and a plurality of display driving circuits. The video data processor outputs a video data. The display driving circuits are respectively coupled to the video data processor to receive the video data. Each of the display driving circuits includes a data converter and a driving signal generator. The data converter transforms the video data to form a sub-video data and transmits it to the driving signal generator. The data converter performs at least one of the following three kinds of processing on the video data: replacing the data of the video data, generating blank space information different from the video data, and generating new blank space information and inserting it into the video data.

1: Video data display device

11: Video data processor

12: Display driver circuit

121:Data receiver

122: Data Transformer

123: Drive signal generator

21: Display panel

22: Display panel

23: Display panel

VD: Video data

VD’: Video data

SVD: Sub video data

DS: drive signal

DD: screen data

BA: Blank Gap Area

DA1: Display area

DA1’: Display area

SVD1: Sub video data

DD1: Subscreen data

BA1: Blank Gap Area

SVD2: Sub video data

DA2: Display area

DA2’: Display area

DD2: Subscreen data

BA2: Blank Gap Area

Figure 1: It is a structural diagram of a video data display device according to an embodiment of the present invention; Figure 2: It is a circuit structural diagram of a display driving circuit according to an embodiment of the present invention; Figure 3: It is a schematic diagram of the operation of a video data display device according to an embodiment of the present invention; Figure 4: It is a schematic diagram of a data converter according to an embodiment of the present invention performing conversion on video data; Figure 5: It is an implementation of the present invention Fig. 6: It is a schematic diagram of the data converter of the embodiment of the present invention performing transformation on the video data; Fig. 7: It is the data converter of the embodiment of the present invention. A schematic diagram of converting video data; and FIG. 8 : it is a schematic diagram of converting video data by a data converter according to an embodiment of the present invention.

Certain terms are used in the description and claims to refer to specific elements. However, those with ordinary knowledge in the technical field of the present invention should understand that manufacturers may use different terms to refer to the same element. The claim does not take the difference in name as a way of distinguishing elements, but takes the difference in the overall technology of the elements as a criterion for distinguishing. The "comprising" mentioned throughout the specification and claims is an open-ended term, so it should be interpreted as "including but not limited to". Furthermore, the term "coupled" herein includes both direct and indirect means of connection. Therefore, if a first device is described as being coupled to a second device, it means that the first device can be directly connected to the second device, or can be indirectly connected to the second device through other devices or other connecting means.

Please refer to FIG. 1 , which is a structural diagram of a video data display device 1 according to an embodiment of the present invention. As shown in the figure, the video data display device 1 includes a video data processor 11 and a plurality of display driver circuits 12 . The video data processor 11 is respectively coupled to each of the display driving circuits 12 . The video data processor 11 can output a video data VD, and each of the display driving circuits 12 receives the video data VD. The video data display device 1 can be applied to include several displays In the display system of the panels 21 , 22 and 23 , the display driving circuits 12 are respectively coupled to the display panels 21 , 22 and 23 to drive the display panels 21 , 22 and 23 to display images.

Please also refer to FIG. 2 , in this embodiment, each of the display driving circuits 12 includes a data receiver 121 , a data converter 122 and a driving signal generator 123 respectively. The data receiver 121 receives the video data VD from the video data processor 11 . Moreover, the data receiver 121 can convert the interface standard format of the video data VD. For example, if the video data VD is originally High Definition Multimedia Interface (HDMI), Low Voltage Differential Signaling (LVDS/LDI), OpenLDI or Serial R/G/B and other formats, the data receiver 121 can convert it to RGB format. Among them, there are many kinds of interface standard formats, so the interface standard formats before and after conversion by the data receiver 121 are not limited to the above examples.

The data converter 122 is coupled to the data receiver 121 to receive the video data VD' processed by the data receiver 121 . However, in some embodiments of the present invention, if the interface standard format of the video data VD does not need to be converted, the data receiver 121 can also be omitted, and the data converter 122 directly receives the video data VD. The data converter 122 transforms the video data VD', and the transformation includes at least one of the following three processes: replacing the data of the video data VD', generating a blank space (Blanking) different from the video data VD' ) information, generate a new blank space information and insert it into the video data VD'. After the data converter 122 completes the conversion of the video data VD', a sub-video data SVD is formed and transmitted to the driving signal generator 123.

The driving signal generator 123 is coupled to the data converter 122 . After the data converter 122 completes the conversion of the video data VD′, a sub-video data SVD is formed and transmitted to the driving signal generator 123 . The driving signal generator 123 can receive the sub-video data SVD, and according to the sub-video data The material SVD generates the driving signal DS required for driving the display panel (for example, the source driving signal, even including the gate driving signal or the common driving signal, etc.). In this way, the driving signal DS can be used to drive each of the display panels 21 , 22 and 23 to display the sub-video data SVD. In addition, in some embodiments of the present invention, the driving signal generator 123 can also generate control signals (eg, source timing signals or gate timing signals, etc.) required for driving the display panel according to the sub-video data SVD.

Referring to FIG. 3, the display panel 21 is coupled to the display driving circuit 12. Therefore, the driving signal DS (which may also include a control signal in some embodiments) generated by the driving signal generator 123 can be used for The display panel 21 is driven to display the sub-video data SVD. In this embodiment, since there are three display panels 21 , 22 and 23 , different sub-video data SVD can be formed respectively by converting the video data VD′ by the data converters 122 of the display driving circuits 12 respectively. , so each of the display panels 21 , 22 and 23 can be driven to display different images.

The three transformations performed by the data transformer 122 will be described in detail below:

Please refer to FIG. 4 , which is the transformation performed by the data converter 122 on the video data VD' in one embodiment. The video data VD' includes a picture data DD and a blank space area BA, wherein the picture data DD is the content to be displayed on the display panel, and the blank space area BA has no display data, but is in various interface standard formats buffer area required. In the present invention, each of the display panels 21 , 22 , 23 can be used to display the whole or part of the picture data DD, for example, the display panel 21 is used to display a part of the picture data DD in a display area DA1 . After receiving the video data VD', the data converter 122 can replace the video data VD' with data outside the display area DA1, so as to discard the picture data DD and/or the blank space area BA outside the display area DA1. Accordingly, only a part of the screen data DD will remain in the display area DA1.

On the other hand, in this embodiment, since the cut-off image data DD is kept on the right side of the display area DA1 (in terms of the drawing), and the standard interface format usually requires a blank space for buffering to be displayed normally, so The data converter 122 can also generate blank space information different from the video data VD', and replace the picture data DD on the right side of the display area DA1. Accordingly, the sub-video data SVD1 transformed by the data converter 122 also includes a sub-picture data DD1 and a blank space area BA1, and the sub-picture data DD1 is a part of the video data VD'. The picture data DD, and the The blank space area BA1 surrounds the sub-picture data DD1, so that the driving signal generator 123 can correctly drive the display panel 21 to display according to the sub-video data SVD1.

Please refer to FIG. 5. Similarly, after receiving the same video data VD', another data converter 122 can also replace the video data VD' with data other than the display area DA2, and keep the video data VD' in the display area. The picture material DD in the area DA2 and the sub-picture material DD1 retained in the aforementioned display area DA1 are different parts of the picture material DD. However, in addition to generating blank space information different from the video data VD' to replace the picture data DD on the left and right sides of the display area DA2, although the lower side of the display area DA2 (according to the drawing) already has a blank space space, the data converter 122 can still use the blank space information different from the video data VD' to replace the picture data DD on the lower side of the display area DA2. Accordingly, the sub-video data SVD2 transformed by the data converter 122 will include a sub-picture data DD2 in a smaller range.

Referring to FIG. 6, compared with the embodiment of FIG. 5, if the sub-video data SVD2 needs to be displayed on the display panel 22 with a larger size, but the sub-picture data DD2 to be displayed is not increased, The data converter 122 only needs to simply select the larger display area DA2 through a frame, and then replace the unnecessary display data DD with the blank space information different from the video data VD', so as to form the same sub-picture data DD2 and The appropriate sub-video data SVD2 of the larger blank space area BA2.

Please refer to FIG. 7, which is the transformation performed by the data converter 122 of the video data VD' in another embodiment. In addition to performing the aforementioned transformation, the data converter 122 can also generate new blank space information to be inserted into the video data VD'. For example, after replacing the video data VD' with data outside the display area DA1, the data converter 122 can directly generate new blank space information and insert it on the right side of the display area DA1 (according to the drawing) to generate Larger display area DA1'. Accordingly, the sub-video data SVD1 transformed by the data converter 122 will have a larger display area DA1', and the display area DA1' also includes a sub-picture data DD1 and a blank space surrounding the sub-picture data DD1 The area BA1 enables the driving signal generator 123 to correctly drive the display panel 21 to display according to the sub-video data SVD1.

In fact, because the data converter 122 of the embodiment of the present invention can replace the data of the video data VD', generate blank space information different from the video data VD', and generate new blank space information to be inserted into the video data VD 'One or more of the three types of processing, when actually applied to the display system, regardless of the size of the display panels 21, 22, 23 or the content to be displayed, each of the data converters 122 can easily generate corresponding sub- The video data SVD is used for the driving signal generator 123 to drive each of the display panels 21 , 22 and 23 . As shown in FIG. 8, after the data converter 122 replaces the video data VD' with data other than the display area DA2, the data converter 122 can replace the video data VD' in the display area with blank space information different from the video data VD' The picture data DD on the left side and the bottom side of DA2 can also generate new blank space information and insert it on the right side of the display area DA2 (according to the drawing), so as to generate the corresponding sub-video data SVD2 with a larger display area DA2'. The display panel 22 is driven by the driving signal generator 123 .

It is worth noting that how each data converter 122 converts the mode of the video data VD' can be pre-stored in the non-volatile memory, and can store multiple sets of different conversion modes, so as to obtain The conversion mode of each data converter 122 is selected through an external control signal, so that the product design flexibility of the video data display device 1 applying each embodiment of the present invention is higher. In addition, the resolution of the sub-picture data may be less than or equal to the resolution of the picture data of the video data. For example, when the resolution of the picture data of the video data is 600x200, the resolution of the sub-picture data may be 200x200. .

To sum up, by implementing the video data display device of the present invention, although each display driving circuit receives the video data by the same video data processor, the video data is converted by the data converters of each display driving circuit, respectively. Different sub-video data can be formed respectively to drive each of the display panels to display different images. Accordingly, compared with the prior art, which requires multiple video data processors to use multiple sets of different video data to drive different display panels, the video data display device of the present invention only requires one set of video data and one video data processor. The same effect can be achieved, and the display signal does not need to be pre-processed such as resolution adjustment, which can effectively reduce the overall cost of the display system.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

1: Video data display device

11: Video data processor

12: Display driver circuit

21: Display panel

22: Display panel

23: Display panel

VD: Video data

DS: drive signal

Claims (20)

A video data display device, comprising: a video data processor that outputs a video data; and A plurality of display driving circuits are respectively coupled to the video data processor to receive the video data, each of the display driving circuits includes a data converter and a driving signal generator, the data converter converts the video data to form A sub-video data is transmitted to the driving signal generator; The data converter performs at least one of the following three kinds of processing on the video data: replacing the data of the video data, generating blank space information different from the video data, and generating new blank space information and inserting it into the video data. The video data display device as claimed in claim 1, wherein the above-mentioned replacing the data of the video data comprises: discarding the data of the video data outside a display area. The video data display device of claim 2, wherein the video data includes a frame data and a blank space area, and only a part of the frame data remains in the display area. The video data display device according to claim 1, wherein the video data includes a picture data and a blank space area, and generating the blank space information different from the video data includes: displaying the video data in a display area The picture data is replaced with blank space information different from the blank space area. The video data display device according to claim 1, wherein said generating new blank space information and inserting it into the video data comprises: generating new blank space information and inserting it outside a display area of the video data. The video data display device according to claim 1, wherein the video data includes a picture data and a blank space area, the sub-video data includes a sub-picture data, and the resolution of the picture data is higher than the resolution of the sub-picture data Spend. The video data display device of claim 6, wherein the sub-video data includes another blank space area surrounding the sub-picture data. The video data display device of claim 1, wherein the driving signal generator generates a driving signal required for driving a display panel according to the sub-video data. The video data display device according to claim 8, wherein the driving signal generator further generates timing control signals required for driving the display panel. The video data display device according to claim 1, wherein each of the display driving circuits further comprises a data receiver, the data receiver receives the video data from the video data processor, and the interface standard format of the video data is Convert and transmit to the data transformer. A method for displaying video data, comprising: receiving a video data from a video data processor with a plurality of display driving circuits; transforming the video data by each of the display driving circuits to form a plurality of sub-video data; Wherein, each of the display driving circuits performs at least one of the following three kinds of processing on the video data: replacing the data of the video data, generating blank space information different from the video data, generating new blank space information and inserting it into the video data . The method for displaying video data according to claim 11, wherein the aforementioned replacing the data of the video data comprises: discarding the data of the video data outside a display area. The method for displaying video data as claimed in claim 12, wherein the video data includes a picture data and a blank space area, and only a part of the picture data is reserved in the display area. The method for displaying video data as claimed in claim 11, wherein the video data includes a picture data and a blank space area, and generating the blank space information different from the video data includes: placing the video data in a display area The picture data of is replaced with blank space information different from the blank space area. The method for displaying video data according to claim 11, wherein said generating new blank space information and inserting it into the video data comprises: generating new blank space information and inserting it outside a display area of the video data. The method for displaying video data according to claim 11, wherein the video data includes a picture data and a blank space area, the sub-video data includes a sub-picture data, and the resolution of the picture data is higher than that of the sub-picture data. resolution. The method for displaying video data as claimed in claim 16, wherein the sub-video data includes another blank space area, and the other blank space area surrounds the sub-picture data. The method for displaying video data as claimed in claim 11, further comprising using each of the display driving circuits to generate driving signals required for driving a plurality of display panels according to the sub-video data, respectively. The method for displaying video data according to claim 18, wherein each of the display driving circuits further generates timing control signals required for driving the display panels. The method for displaying video data according to claim 11, further comprising converting the interface standard format of the video data by each of the display driving circuits.

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