A rh850 liquid crystal instrument virtual pointer optimization method and device

A technology of RH850 and virtual pointer, which is applied in transportation and packaging, multi-program device, program control device, etc. It can solve the problem of large external Flash resource occupation, achieve the effect of reducing the frame rate and ensuring the refresh rate

Active Publication Date: 2022-05-17
WUHAN KOTEI INFORMATICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the Sprite window can only use textures and cannot perform operations such as rotation and scaling, it is necessary to cut each rotation angle of the pointer into an independent picture and put it in the external Flash, which will cause a very large occupation of external Flash resources.

Method used

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  • A rh850 liquid crystal instrument virtual pointer optimization method and device
  • A rh850 liquid crystal instrument virtual pointer optimization method and device
  • A rh850 liquid crystal instrument virtual pointer optimization method and device

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, n...

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Abstract

The present invention provides a method and device for optimizing virtual pointers of RH850 liquid crystal meters. The method includes: first creating a virtual pointer window and a meter element window; wherein, both the virtual pointer window and the meter element window are double-buffered windows. Then, in each VSync cycle, the virtual pointer is drawn in the virtual pointer window by the GPU, and the meter element with a preset ratio is drawn in the meter element window. Compared with the existing technology, the present invention reduces the frame rate of other instrument element screens except the virtual pointer by layering and dynamically allocating GPU resources on the premise of not increasing the consumption of external Flash, and can ensure the virtual pointer of the RH850 liquid crystal meter The frame rate is always stable at around 60fps. Under the condition of limited GPU computing power, the refresh rate of the virtual pointer of the RH850 LCD instrument can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of vehicle-mounted liquid crystal meters, in particular to a method and device for optimizing a virtual pointer of an RH850 liquid crystal meter. Background technique [0002] With the popularity of LCD instruments, more and more car users are pursuing LCD instrument panels. At present, the RH850D1Mx series can drive 3.5-10.25-inch LCD instruments, and can drive up to 1280*480 LCD instruments. The pointer information such as vehicle speed and rotational speed of the large-sized LCD instrument is displayed by the virtual pointer through the TFT screen. In order to meet the safety requirements of the car, the refresh rate of the virtual pointer is generally required to reach 60fps, otherwise the pointer delay will bring safety hazards to the user; The display frame rate of other instrument elements only needs to be kept at about 20fps, so that there is no obvious lag for the naked eye. However, the RH850 MCU is equippe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/451G06F9/50B60K35/00
CPCG06F9/451G06F9/5027B60K35/00
Inventor 王军德陈晓龙
Owner WUHAN KOTEI INFORMATICS
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