Display control device and display control method

Abstract

To display information of higher priority when displaying a video separately on a plurality of channels.SOLUTION: A display control device pertaining to an embodiment comprises a detection unit, a generation unit and a general-purpose video IC. The detection unit detects the abnormality of a first and a second display region in which an image is displayed. The generation unit generates a first and a second image, arranges the first image in a first layer when no abnormality is detected in the first display region, arranges the first image in a second layer when abnormality is detected in the first display region, and generates a third image in which the first and the second layers are synthesized. The general-purpose video IC causes the image arranged in the first layer of the third image to be displayed in the first display region and causes the image arranged in the second layer to be displayed in the second display region.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a display control device and a display control method. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a technique for displaying high-priority information on an alternative display when an abnormality occurs in a display (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-31700 A [Patent Document 2] JP 2014-125006 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional technology, when video is separated into multiple channels for display, it may not be possible to display high-priority information. For example, in the past, when an abnormality was detected in a display while the separated video was being transferred over 2ch, the power to the display was turned off to avoid misleading the user. In this case, the user would not be able to obtain any information from the display, including high-priority information.

[0005] The present invention has been made in consideration of the above, and aims to provide a display control device and a display control method that are capable of displaying high priority information when video is separated and displayed on multiple channels. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, a display control device according to the present invention includes a detection unit, a generation unit, and a display control unit. The detection unit detects an abnormality in a first display area and a second display area that display images. The generation unit generates a first image and a second image, and when the detection unit detects no abnormality in the first display area, the generation unit arranges the first image in a first layer, and when the detection unit detects an abnormality in the first display area, the generation unit arranges the first image in a second layer, and generates a third image by combining the first layer and the second layer. The display control unit displays the image arranged in the first layer of the third image in the first display area, and displays the image arranged in the second layer in the second display area. Effect of the Invention

[0007] According to the present invention, when video is separated into a plurality of channels for display, information with a high priority can be displayed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a display control system according to an embodiment. [Diagram 2] FIG. 2 is a functional block diagram showing the configuration of the Soc. [Diagram 3] FIG. 3 is a diagram illustrating layers. [Figure 4] FIG. 4 is a functional block diagram showing the configuration of a general-purpose video IC. [Diagram 5] FIG. 5 is a diagram illustrating an example of a display control method. [Figure 6] FIG. 6 is a diagram illustrating an example of a display control method. [Figure 7] FIG. 7 is a diagram illustrating an example of a display control method. [Figure 8] FIG. 8 is a flowchart showing the procedure of the process executed by the display control device according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of a display control device and a display control method disclosed in the present application will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below.

[0010] First, a display control system according to an embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing an example of the configuration of a display control system according to an embodiment.

[0011] As shown in FIG. 1, the display control system 1 includes a display control device 1a, a driver 31, a driver 32, a display area 41, and a display area .

[0012] For example, the display control system 1 can display images on a navigation device mounted on a vehicle such as an automobile, as well as on a smartphone, a tablet terminal, and the like.

[0013] The display control device 1a receives input of detection information for detecting abnormalities in the display area 41 and the display area 42, and outputs images to the driver 31 and the driver 32, respectively.

[0014] The drivers 31 and 32 display the received images in the display area 41 and the display area 42, respectively. In the example of Fig. 1, the driver 31 displays the image 51 in the display area 41. The driver 32 displays the image 52 in the display area 42.

[0015] The display area 41 and the display area 42 may be partial areas of a single display, or may be separate displays.

[0016] When the display area 41 and the display area 42 are separate displays, the displays may be disposed closely together so that the boundary between the display areas is not visible.

[0017] For example, the display control device 1a generates an image of 1920 dots x 1080 dots. Then, each driver separates the generated image to obtain an image of 960 dots x 1080 dots, and displays the resulting image in each display area.

[0018] That is, the display control system 1 can transfer and display a FULL HD image in 2ch.

[0019] In the following description, for example, an image of 1920 dots x 1080 dots may be simply expressed as 1920 x 1080.

[0020] In the display control method according to the embodiment, the display control device 1a detects an abnormality in the display area 41 and the display area 42 that display an image.

[0021] In the display control method according to the embodiment, the display control device 1 a generates an image 51 and an image 52 .

[0022] In the display control method of the embodiment, the display control device 1a places the image 51 on a first layer when no abnormality is detected in the display area 41, and places the image 51 on a second layer when an abnormality is detected in the display area 41.

[0023] In the display control method according to the embodiment, the display control device 1a generates a composite image by combining a first layer and a second layer.

[0024] In the display control method of the embodiment, the display control device 1a displays an image arranged on the first layer of the composite image in the display area 41, and displays an image arranged on the second layer in the display area 42.

[0025] In this case, the image 51 continues to be displayed even if an abnormality occurs in any of the display areas. Therefore, according to this embodiment, when video is separated into a plurality of channels for display, information with a high priority can be displayed.

[0026] The display control device 1a is realized by a computer having, for example, a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a flash memory, an input / output port, and various other circuits.

[0027] The CPU of the computer executes each function of the display control device 1a by reading and executing a program stored in, for example, a ROM.

[0028] Furthermore, at least one or all of the functional units of the display control device 1a can be configured with hardware such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA).

[0029] The display control device 1a may acquire the above-mentioned programs and various information via another computer or portable recording medium connected through a wired or wireless network.

[0030] In this embodiment, the display control device 1a is realized by a Soc (System-on-a-chip) 10 and a general-purpose video IC 20.

[0031] The general-purpose video IC 20 corresponds to a display control unit. For example, the general-purpose video IC 20 displays an image arranged on one layer of the composite image in the display area 41, and displays an image arranged on the other layer in the display area .

[0032] 2 is a functional block diagram showing the configuration of the Soc 10. As shown in FIG. 2, the Soc 10 includes a detection unit 101, a generation unit 102, and a transmission unit 103.

[0033] The detection unit 101 detects an abnormality in the display area 41 and the display area 42 that display images. For example, the detection unit 101 may receive a predetermined signal as detection information from a display having each display area.

[0034] For example, when the detection unit 101 does not receive a stop signal for a certain period of time after receiving a start signal from a display, the detection unit 101 detects an abnormality in the display area.

[0035] The generating unit 102 generates an image 51 and an image 52. Furthermore, the generating unit 102 performs different processing depending on whether or not an abnormality has been detected in the display area 41 by the detecting unit 101.

[0036] Here, the layers of an image will be described with reference to Fig. 3. Fig. 3 is a diagram for explaining layers. As shown in Fig. 3, an image 50 has a layer 51L and a layer 52L.

[0037] The generation unit 102 can arrange images different from each other on the layer 51L and the layer 52L.

[0038] The number and arrangement of layers are not limited to those shown in Fig. 3. For example, the image 50 may have four layers arranged in a grid pattern.

[0039] The images generated by the generation unit 102 include images captured by cameras installed at various locations such as the rear and front of the vehicle, images processed from the captured images, images drawn using a specified program, and the like.

[0040] For example, image 51 in Fig. 1 is an image captured by a rear camera of a car with auxiliary lines added, and image 52 is an image of a map drawn by a navigation system.

[0041] In addition, the generation unit 102 can generate images for entertainment, images to be displayed on an audio operation screen, overhead images of a vehicle, and the like.

[0042] The images generated by the generation unit 102 may be prioritized according to standards related to safety, convenience, and the like.

[0043] For example, when driving a car backwards to park, etc., taking into consideration safety and convenience, it is considered that the priority of image 51 showing the rear of the car may be set higher than the priority of image 52, which is an image of a map.

[0044] Therefore, when an abnormality occurs in one of the display areas 41 and 42 and an image cannot be displayed, the display control device 1a displays an image with a higher priority in the display area where no abnormality occurs.

[0045] In this embodiment, the priority of the image 51 is higher than the priority of the image 52. Note that the priority may change depending on the vehicle situation, etc.

[0046] In this embodiment, the display area 41 corresponds to the first display area. The display area 42 corresponds to the second display area. The layer 51L corresponds to the first layer. The layer 52L corresponds to the second layer. The image 51 corresponds to the first image. The image 52 corresponds to the second image.

[0047] When the detection unit 101 detects no abnormality in the display area 41, the generation unit 102 places the image 51 in layer 51L. On the other hand, when the detection unit 101 detects an abnormality in the display area 41, the generation unit 102 places the image 51 in layer 52L.

[0048] Then, the generation unit 102 synthesizes the image arranged on the layer 51L with the image arranged on the layer 52L to generate the image 50. The transmission unit 103 transmits the 1920×1080 image 50 obtained by the synthesis to the general-purpose video IC 20.

[0049] 4 is a functional block diagram showing the configuration of a general-purpose video IC 20. As shown in FIG.

[0050] The receiving unit 201 receives the image 50 transmitted by the Soc 10 .

[0051] The separation unit 202 separates the image 50 for each layer. For example, the separation unit 202 separates the image 50 into an image arranged on a layer 51L and an image arranged on a layer 52L.

[0052] The transmission unit 203 transmits the image arranged on the layer 51L to the driver 31, and transmits the image arranged on the layer 52L to the driver 32.

[0053] Therefore, when the image 51 is arranged on the layer 51L, the image 51 is displayed in the display area 41. On the other hand, when the image 51 is arranged on the layer 52L, the image 51 is displayed in the display area .

[0054] An example of a display control method by the display control device 1a will be described with reference to Fig. 5, Fig. 6, and Fig. 7. Fig. 5, Fig. 6, and Fig. 7 are diagrams for explaining an example of the display control method.

[0055] As shown on the left side of Figure 5, when image 51 is displayed in display area 41 and image 52 is displayed in display area 42, if the detection unit 101 detects an abnormality in display area 41, the generation unit 102 places image 51 on layer 52L.

[0056] As a result, image 51 is displayed in display area 42, as shown on the right side of Fig. 5. In this way, even if an abnormality occurs in display area 41 displaying high-priority image 51, display control system 1 can change the display area and continue to display image 51.

[0057] Also, as shown on the left side of Figure 6, when image 51 is displayed in display area 41 and image 52 is displayed in display area 42, if the detection unit 101 detects an abnormality in display area 42, the generation unit 102 places image 51 in layer 51L.

[0058] In this way, when an abnormality occurs in the display area in which the low priority image 52 is being displayed, the display control system 1 can continue to display the high priority image 51 without changing the display area.

[0059] Furthermore, as shown in FIG. 7, the display control device 1a may display a plurality of images using a squeeze display.

[0060] As shown on the left side of Figure 7, when image 51 is displayed in display area 41 and image 52 is displayed in display area 42, if the detection unit 101 detects an abnormality in display area 41, the generation unit 102 places an image obtained by combining image 51 and image 52 on layer 52L.

[0061] In the example of FIG. 7, the generating unit 102 arranges an image 51a obtained by compressing the image 51 in the horizontal direction and an image 52a obtained by compressing the image 52 in the horizontal direction on a layer 52L.

[0062] This allows the display control system 1 to continue displaying both images even if an abnormality occurs in one of the display areas.

[0063] The procedure of the process executed in the display control device according to the embodiment will be described with reference to Fig. 8. Fig. 8 is a flowchart showing the procedure of the process executed by the display control device according to the embodiment.

[0064] 8, first, the display control device 1a detects an abnormality in a display area (step S101). Then, the display control device 1a determines whether or not the display area in which the abnormality is detected is a display area displaying an image with a higher priority (step S102).

[0065] If the display area in which the abnormality has been detected is the display area displaying the image with the higher priority (step S102: Yes), the display control device 1a changes the layer and composites the images (step S103).

[0066] If the display area in which the abnormality is detected is not the display area displaying the image with the higher priority (step S102: No), the display control device 1a composites the images without changing the layers (step S104).

[0067] Then, the display control device 1a separates the composite image and displays it in each display area (step S105).

[0068] As described above, the display control device 1a according to the embodiment includes a detection unit 101, a generation unit 102, and a general-purpose video IC 20. The detection unit 101 detects an abnormality in the display area 41 and the display area 42 that display images. The generation unit 102 generates the image 51 and the image 52, and when the detection unit 101 does not detect an abnormality in the display area 41, the generation unit 102 arranges the image 51 in the layer 51L, and when the detection unit 101 detects an abnormality in the display area 41, the generation unit 102 arranges the image 51 in the layer 52L. The general-purpose video IC 20 displays the image arranged in the layer 51L of the image 50 in the display area 41, and displays the image arranged in the layer 52L in the display area 42. In this way, the display control device 1a continues to display one image in the display area in which an abnormality is not detected. As a result, according to this embodiment, when the video is separated into multiple channels and displayed, information with a high priority can be displayed.

[0069] Furthermore, this embodiment can also comply with redundant design regulations for backup cameras in various countries. Furthermore, since a general-purpose video IC is used in this embodiment, it is more cost-effective than preparing a custom IC or the like.

[0070] Further advantages and modifications may readily occur to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0071] 1. Display control system 1a Display control device 10 Soc 20 General-purpose video IC 31, 32 Driver 41, 42 display area 50, 51, 52, 51a, 52a Images 51L, 52L Layer 101 Detection unit 102 Generation part 103 Transmitter 201 Receiving unit 202 Separation section 203 Transmitter

Claims

1. a detection unit that detects an abnormality in a first display area and a second display area that display an image; a generation unit that generates a first image which is an image of the rear of a vehicle and a second image which is an image of a map, and arranges the first image in a first layer when no abnormality is detected in the first display area by the detection unit, and arranges the first image in a second layer when an abnormality is detected in the first display area by the detection unit, and generates a third image by combining the first layer and the second layer; a display control unit that displays an image arranged on the first layer of the third image in the first display area and displays an image arranged on the second layer of the third image in the second display area; having the detection unit detects an abnormality in the first display area when a stop signal is not received for a certain period of time after receiving a start signal from a display including the first display area; When the first image is displayed in the first display area and the second image is displayed in the second display area, if the detection unit detects an abnormality in the first display area, the generation unit arranges an image obtained by compressing the first image in the horizontal direction and an image obtained by compressing the second image in the horizontal direction in the second layer. A display control device comprising:

2. A display control method executed by a display control device, comprising: a detection step of detecting an abnormality in a first display area and a second display area that display an image; a generating step of generating a first image which is an image of the rear of the automobile and a second image which is an image of a map, and arranging the first image in a first layer if no abnormality is detected in the first display area by the detection step, and arranging the first image in a second layer if an abnormality is detected in the first display area by the detection step, and generating a third image by combining the first layer and the second layer; a display control step of displaying an image arranged on the first layer of the third image in the first display area and an image arranged on the second layer of the third image in the second display area; Including, The detection step detects an abnormality in the first display area when a stop signal is not received for a certain period of time after a start signal is received from a display including the first display area, The generating step includes, when the first image is displayed in the first display area and the second image is displayed in the second display area, if an abnormality is detected in the first display area by the detecting step, arranging an image obtained by compressing the first image in the horizontal direction and an image obtained by compressing the second image in the horizontal direction in the second layer. A display control method comprising:

Images