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Vehicular device, and control method for vehicular device

A control method, technology for vehicles, applied in the direction of vehicle components, transportation and packaging, electrical circuits or fluid lines, etc., to solve problems such as cache memory, increased bus load, etc.

Inactive Publication Date: 2021-11-26
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, as a result of concentrating the control of each display on one vehicle device, a new problem arises that the load on the cache memory and the bus of the vehicle device increases.
This problem will become more prominent with the development of large-scale and high-definition displays
[0008] In addition, for example, when displaying multiple contents, the contents need to be shared across CPU modules and operating systems, and the load on the cache memory and the bus is expected to further increase

Method used

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  • Vehicular device, and control method for vehicular device
  • Vehicular device, and control method for vehicular device
  • Vehicular device, and control method for vehicular device

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0044] Hereinafter, the first embodiment will be described. Such as figure 1 As shown, the vehicle device 1 constitutes, for example, a cockpit system 5 including three displays of an instrument display 2 , a center display 3 , and a head-up display 4 .

[0045] It is assumed that the meter display 2 is composed of, for example, a liquid crystal display or an organic EL display, and is installed near the front of the driver on the dashboard. It is assumed that the center display 3 is composed of, for example, a liquid crystal display or an organic EL display, and is installed near the center console.

[0046] It is assumed that the head-up display 4 is composed of, for example, a liquid crystal display or an organic EL display, or a projector that projects an image onto a front window, and is installed on the dashboard near the front of the driver. However, the number, arrangement, or configuration of the displays are examples and are not limited thereto.

[0047] Furthermo...

no. 2 approach

[0093] Next, a second embodiment will be described. In the second embodiment, a configuration example of the vehicle device 1 that is different from the first embodiment will be described. In addition, for the sake of simplification of description, the vehicle device 1 , the OS 20 , or the application 21 will be described with the same reference numerals. In addition, the method of synchronous control etc. is the same as that of 1st Embodiment.

[0094]

[0095] In the first configuration example, such as Figure 12 As shown, the vehicle device 1 executes the hypervisor 40 on the CPU 10 , and executes a plurality of, for example, two OS 20A and OS 20B on the hypervisor 40 . At this time, OS20A is allocated to CPU module 16A, and OS20B is allocated to CPU module 16B. In this embodiment, it is assumed that OS 20A is in charge of relatively high real-time processing, and OS 20B is in charge of relatively low real-time processing.

[0096] Therefore, in OS 20A, for example, ...

no. 3 approach

[0104] Next, a third embodiment will be described. In the third embodiment, an example in which the surface is synchronized between the vehicle device 1 and the ECU 6 will be described. In addition, in order to simplify description, the vehicle apparatus 1, OS20, or the application 21 is demonstrated using the same code|symbol. In addition, an embodiment in which the configuration of the vehicle device 1 is the same as that of the first embodiment and the second embodiment, and the method of synchronous control is the same as that of the first embodiment can be employed.

[0105] In the third embodiment, if Figure 14 As shown, the vehicle device 1 is connected to another ECU 6 in a communicable manner, and uses the same control method as the first embodiment to make the surface drawn on the physical surface 30 by the synchronization unit on its own side and the surface on the ECU 6 side. The surfaces delineated by the other physical planes 30 are synchronized.

[0106] Spe...

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PUM

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Abstract

A vehicular device 1 according to an embodiment includes: a plurality of CPU modules 16; a plurality of cache memories 17 that are respectively allocated to the plurality of CPU modules 16; and memory synchronization units (13, 16) that synchronize the plurality of cache memories 17. Each memory synchronization unit synchronizes surfaces rendered in the cache memories 17, wherein the surfaces to be synchronized are divided into a plurality of tiles and the divided tiles are sequentially synchronized starting with the tiles for which rendering is complete.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Application No. 2019-077776 filed on April 16, 2019, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a vehicle device and a control method of the vehicle device. Background technique [0004] Conventionally, for example, as in Patent Document 1, a display provided in a vehicle is controlled by an independent device. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2016-97928 [0006] In addition, in recent years, a cockpit system in which a plurality of displays is installed in a vehicle has been widely used. In this case, if each display is controlled by an independent device, there is a possibility that a seamless user interface cannot be realized due to limitations in frequency bands between devices, delay in synchronization, and the like. Therefore, by concentrating the control of...

Claims

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Application Information

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IPC IPC(8): G09G5/39B60K35/00B60R16/02G09G5/00G09G5/393G09G5/395
CPCB60K35/00B60R16/02G09G5/00G09G5/39G09G5/393G09G5/395G06F12/0802G06F12/0844G06F2212/60
Inventor 谷端伸彦
Owner DENSO CORP
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