Video data display device and display method thereof

Abstract

The present invention proposes a video data display device and a display method thereof, which includes a video data processor receiving a video data by a plurality of display driving circuits. Each of the display driving circuits transforms the video data to form a sub-video data for driving a plurality of display panels. The data converter performs at least one of the following three processing on the video data: replacing the data of the video data, generating blank gap information different from the video data, and generating new blank gap information to be inserted into the video data. Accordingly, only one set of video data and one data processor are needed to drive a plurality of display panels to display different images, and no pre-processing such as resolution adjustment is required for the display signal, which can effectively reduce the overall cost of the display system.

Description

Technical Field

[0001] The present invention relates to a video data display device, in particular to a device that uses a set of video data to drive multiple display panels for display in a display system composed of multiple display panels. The present invention also relates to a display method of the video data display device. Background Art

[0002] When there are multiple display panels in a display system, in order for each display panel to display different images, it is generally necessary to use multiple sets of different video data to drive different display panels. To this end, in addition to setting up a display driving circuit for each display panel, the display system must also set up a video data processor for each display panel, so that the video data processor can receive and process different display signals, and then provide them to different display driving circuits to drive each display panel.

[0003] 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 pre-processing on the display signal (e.g., resolution adjustment) to form and provide multiple sets of different display data to drive each display panel, which will also increase the cost of the display system. In particular, in the fields of automotive electronics, the Internet of Things, or smart homes, it is often necessary to use multiple display panels that only display simple information. In these fields, the cost of driving multiple display panels has become an urgent problem that the industry needs to solve.

[0004] In view of this, the present invention provides a video data display device, which can allow multiple display panels to display through a set of video data, thereby solving the above-mentioned problem. Summary of the invention

[0005] The purpose of the present invention is to provide a video data display device and a display method thereof, wherein each display driving circuit receives the same video data from the same video data processor, but the video data is converted by the data converter of each display driving circuit to form different sub-video data. Accordingly, only one set of video data and one data processor are needed to drive several display panels to display different images, and no pre-processing such as resolution adjustment is required for the display signal, which can effectively reduce the overall cost of the display system.

[0006] 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 drive signal generator. The data converter converts the video data to form a sub-video data and transmits it to the drive signal generator. The data converter performs at least one of the following three processing on the video data: replacing the data of the video data, generating blank gap information different from the video data, and generating new blank gap information to be inserted into the video data. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 : It is a structural diagram of a video data display device according to an embodiment of the present invention;

[0008] Figure 2 :It is a circuit structure diagram of a display driving circuit according to an embodiment of the present invention;

[0009] Figure 3 : It is a schematic diagram of the operation of the video data display device according to an embodiment of the present invention;

[0010] Figure 4 : It is a schematic diagram of a data converter according to an embodiment of the present invention performing transformation on video data;

[0011] Figure 5 : It is a schematic diagram of a data converter according to an embodiment of the present invention performing transformation on video data;

[0012] Figure 6 : It is a schematic diagram of a data converter according to an embodiment of the present invention performing transformation on video data;

[0013] Figure 7 : which is a schematic diagram of a data converter according to an embodiment of the present invention performing transformation on video data; and

[0014] Figure 8 : It is a schematic diagram of the data converter according to an embodiment of the present invention performing transformation on video data.

[0015]

Figure number comparison

[0016] 1 Video data display device

[0017] 11 Video Data Processor

[0018] 12 Display driver circuit

[0019] 121 Data Receiver

[0020] 122 Data Converter

[0021] 123 Drive signal generator

[0022] 21 Display Panel

[0023] 22 Display Panel

[0024] 23 Display Panel

[0025] VD Video Data

[0026] VD' Video Data

[0027] SVD sub video data

[0028] DS drive signal

[0029] DD screen data

[0030] BA Blank Gap Area

[0031] DA1 Display Area

[0032] DA1' display area

[0033] SVD1 Sub Video Data

[0034] DD1 sub-screen data

[0035] BA1 Blank gap area

[0036] SVD2 sub video data

[0037] DA2 Display Area

[0038] DA2' display area

[0039] DD2 sub-screen data

[0040] BA2 Blank gap area DETAILED DESCRIPTION

[0041] In order to further understand and appreciate the structural features and effects of the present invention, a preferred embodiment and detailed description are provided as follows:

[0042] Certain words are used in the specification and claims to refer to specific components. 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 component. Moreover, the specification and claims do not use the difference in name as a way to distinguish components, but use the overall technical difference of the components as the criterion for distinction. The term "including" mentioned throughout the specification and claims is an open term and should be interpreted as "including but not limited to". Furthermore, the term "coupled" includes direct and indirect connection means. Therefore, if the text describes a first device 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 connection means.

[0043] See also Figure 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 (Video Processor) 11 and a plurality of display driver circuits (Display Driver Circuit) 12. The video data processor 11 is respectively coupled to each of the display driver circuits 12. The video data processor 11 can output a video data VD, and each of the display driver circuits 12 receives the video data VD. The video data display device 1 can be applied to a display system including a plurality of display panels 21, 22, 23, and each of the display driver circuits 12 is respectively coupled to each of the display panels 21, 22, 23 to drive each of the display panels 21, 22, 23 to display images.

[0044] Please refer to Figure 2 As shown, in this embodiment, each display driving circuit 12 includes a data receiver 121, a data converter 122 and a driving signal generator 123. The data receiver 121 receives the video data VD from the video data processor 11. In addition, the data receiver 121 can convert the interface standard format of the video data VD. For example, if the video data VD is originally in the format of High Definition Multimedia Interface (HDMI), Low Voltage Differential Signaling (LVDS / LDI), OpenLDI or Serial R / G / B, the data receiver 121 can convert it into RGB format. There are many types of interface standard formats, so the interface standard formats before and after the conversion of the data receiver 121 are not limited to the above examples.

[0045] 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 be omitted, and the video data VD is directly received by the data converter 122. The data converter 122 converts the video data VD', and the conversion includes at least one of the following three processes: replacing the data of the video data VD', generating blanking information different from the video data VD', and generating new blanking information to be inserted into the video data VD'. After the data converter 122 completes the conversion of the video data VD', a sub-video data VS is formed and transmitted to the driving signal generator 123.

[0046] 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 generate a driving signal DS (such as a source driving signal, and even a gate driving signal or a common driving signal, etc.) required to drive the display panel according to the sub-video data SVD. 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 a control signal (such as a source timing signal or a gate timing signal, etc.) required to drive the display panel according to the sub-video data SVD.

[0047] Please refer to Figure 3 As shown, the display panel 21 is coupled to the display driving circuit 12, so the driving signal DS (which may also include a control signal in some embodiments) generated by the driving signal generator 123 can be used to drive the display panel 21 to display the sub-video data SVD. In this embodiment, since there are three display panels 21, 22, and 23, the data converter 122 of each display driving circuit 12 can convert the video data VD' to form different sub-video data SVD, so that each display panel 21, 22, and 23 can be driven to display different pictures.

[0048] The following will describe in detail the three transformations performed by the data transformer 122:

[0049] Please refer to Figure 4As shown, it is a transformation performed on the video data VD' by a data converter 122 of an embodiment. The video data VD' includes a picture data DD and a blank gap area BA, wherein the picture data DD is the content to be displayed on the display panel, and the blank gap area BA does not have display data, but is a buffer area required by various interface standard formats. In the present invention, each of the display panels 21, 22, and 23 can be used to display a complete or partial 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 data of the video data VD' outside the display area DA1 to discard the picture data DD and / or the blank gap area BA outside the display area DA1. Accordingly, only a part of the picture data DD will be retained in the display area DA1.

[0050] On the other hand, in this embodiment, since the truncated screen data DD is retained on the right side of the display area DA1 (in terms of the image), and the interface standard format usually requires a blank gap to be reserved for buffering in order to display normally, the data converter 122 can also generate blank gap information different from the video data VD', and replace the screen data DD on the right side of the display area DA1. Accordingly, the sub-video data SVD1 formed by the conversion by the data converter 122 also includes a sub-screen data DD1 and a blank gap area BA1. The sub-screen data DD1 is the screen data DD of a part of the video data VD', and the blank gap area BA1 surrounds the sub-screen 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.

[0051] Please refer to Figure 5 As shown, similarly, after receiving the same video data VD', another data converter 122 can also replace the data outside the display area DA2 of the video data VD', and the picture data DD retained in the display area 2 and the picture data DD retained in the aforementioned display area DA1 are different parts of the picture data DD. However, in addition to generating blank gap information different from the video data VD' to replace the picture data DD located on the left and right sides of the display area DA1, although the lower side of the display area DA2 (in terms of the drawing) already has a blank gap, the data converter 122 can still use the blank gap information different from the video data VD' to replace the picture data DD located on the lower side of the display area DA2. Accordingly, the sub-video data SVD2 formed by the conversion by the data converter 122 will include a sub-picture data DD2 of a smaller range.

[0052] Please refer to Figure 6 As shown, compared with the aforementioned Figure 5 In an embodiment, if the sub-video data SVD2 needs to be displayed on a display panel 22 with a larger size, but the sub-picture data DD2 to be displayed has not increased, the data converter 122 only needs to simply select a larger display area DA2 and then use the blank gap information different from the video data VD' to replace the unnecessary display data DD, thereby forming a suitable sub-video data SVD2 with the same sub-picture data DD2 and a larger blank gap area BA1.

[0053] Please refer to Figure 7 As shown, it is the transformation performed on the video data VD' by the data converter 122 of another embodiment. In addition to performing the aforementioned transformation, the data converter 122 can also generate new blank gap information to be inserted into the video data VD'. For example, after the data converter 122 replaces the data outside the display area DA1 of the video data VD', it can directly generate new blank gap information to be inserted into the right side of the display area DA1 (as shown in the figure). Accordingly, the sub-video data SVD1 formed by the transformation of 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 gap area BA1 surrounding 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.

[0054] In fact, since the data converter 122 of the embodiment of the present invention can perform one or more of the following three processes: replacing the data of the video data VD', generating blank gap information different from the video data VD', and generating new blank gap information to insert into the video data VD', when actually applied to a display system, no matter what the size of the display panels 21, 22, 23 or the content to be displayed is, each of the data converters 122 can easily generate the corresponding sub-video data SVD to allow the driving signal generator 123 to drive each of the display panels 21, 22, 23. Figure 8 As shown, after the data converter 122 replaces the video data VD' with the data outside the display area DA2, in addition to using blank gap information different from the video data VD' to replace the picture data DD located on the left and bottom sides of the display area DA2, it can also generate new blank gap information to be inserted into the right side of the display area DA2 (in terms of the figure) to generate sub-video data SVD2 corresponding to a larger display area DA2' to allow the driving signal generator 123 to drive the display panel 22.

[0055] It is worth noting that the mode of how each data converter 122 converts the video data VD' can be pre-stored in a non-volatile memory, and a plurality of different conversion modes can be stored, so that the conversion mode of each data converter 122 can be selected through an external control signal, so that the product design flexibility of the video data display device 1 using each embodiment of the present invention is higher. In addition, the resolution of the aforementioned sub-picture data will 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 aforementioned sub-picture data can be 200x200.

[0056] In summary, by implementing the video data display device of the present invention, although each display driving circuit receives video data from the same video data processor, the video data can be converted by the data converters of each display driving circuit respectively, so as to form different sub-video data respectively, so as to drive each display panel to display different pictures. 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 to be matched with one data processor to achieve the same effect, and does not require pre-processing such as resolution adjustment of the display signal, which can effectively reduce the overall cost of the display system.

[0057] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications to the shape, structure, characteristics and spirit described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A video data display device, characterized in that: It contains: a video data processor, the video data processor outputting 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 comprises a data converter and a driving signal generator, the data converter converts 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 processings on the video data: replacing the data of the video data, generating blank gap information different from the video data, generating new blank gap information and inserting it into the video data, and the aforementioned replacement of the data of the video data includes discarding the data of the video data outside a display area.

2. The video data display device according to claim 1, characterized in that: in, The video data includes a frame data and a blank gap area, and only a portion of the frame data is retained in the display area.

3. The video data display device according to claim 1, characterized in that: in, The video data includes a frame data and a blank gap area. The aforementioned generation of blank gap information different from the video data includes: replacing the frame data of the video data in a display area with blank gap information different from the blank gap area.

4. The video data display device according to claim 1, characterized in that: in, The aforementioned generating new blank gap information and inserting it into the video data includes: generating new blank gap information and inserting it outside a display area of ​​the video data.

5. The video data display device according to claim 1, characterized in that: in, The video data includes a picture data and a blank gap area, and the sub-video data includes a sub-picture data. The resolution of the picture data is higher than the resolution of the sub-picture data.

6. The video data display device according to claim 5, characterized in that: in, The sub-video data includes another blank gap area, and the other blank gap area surrounds the sub-picture data.

7. The video data display device according to claim 1, characterized in that: in, The driving signal generator generates a driving signal required for driving a display panel according to the sub-video data.

8. The video data display device according to claim 7, characterized in that: in, The driving signal generator also generates a timing control signal required for driving the display panel.

9. The video data display device according to claim 1, characterized in that: in, Each display driving circuit further comprises a data receiver, which receives the video data from the video data processor, converts the interface standard format of the video data and transmits it to the data converter.

10. A method for displaying video data, characterized in that: It contains: A plurality of display driving circuits receive video data from a video data processor; The display driving circuits transform the video data to form a plurality of sub-video data; Among them, each display driving circuit performs at least one of the following three processing on the video data: replacing the data of the video data, generating blank gap information different from the video data, and generating new blank gap information to insert into the video data, and the aforementioned replacement of the data of the video data includes: discarding the data of the video data outside a display area.

11. The method for displaying video data according to claim 10, characterized in that: The video data includes a frame data and a blank gap area, and only a portion of the frame data is retained in the display area.

12. The method for displaying video data according to claim 10, characterized in that: in, The video data includes a frame data and a blank gap area. The aforementioned generation of blank gap information different from the video data includes: replacing the frame data of the video data in a display area with blank gap information different from the blank gap area.

13. The method for displaying video data according to claim 10, characterized in that: in, The aforementioned generating new blank gap information and inserting it into the video data includes: generating new blank gap information and inserting it outside a display area of ​​the video data.

14. The method for displaying video data according to claim 10, characterized in that: in, The video data includes a picture data and a blank gap area, and the sub-video data includes a sub-picture data. The resolution of the picture data is higher than the resolution of the sub-picture data.

15. The method for displaying video data according to claim 14, characterized in that: in, The sub-video data includes another blank gap area, and the other blank gap area surrounds the sub-picture data.

16. The method for displaying video data according to claim 10, characterized in that: in, The video data display method further includes using each display driving circuit to generate driving signals required for driving a plurality of display panels according to the sub-video data.

17. The method for displaying video data according to claim 16, wherein: in, Each of the display driving circuits also generates a timing control signal required for driving the display panels.

18. The method for displaying video data according to claim 10, wherein: The video data display method further includes converting the interface standard format of the video data by each display driving circuit.

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