CN214057245U

CN214057245U - Motormeter animation play system

Info

Publication number: CN214057245U
Application number: CN202120005805.0U
Authority: CN
Inventors: 蒋高举; 刘益; 向志华; 马齐林; 赵耀; 程乾松
Original assignee: Chongqing Yazaki Meter Co Ltd
Current assignee: Chongqing Yazaki Meter Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-08-27
Anticipated expiration: 2031-01-04

Abstract

The utility model discloses an automobile instrument animation play system, the automobile instrument animation play system comprises a display screen, a processor, a DDR (double data rate) active memory unit, a memory for storing key frame video data and a coprocessor for analyzing the key frame video data; the first input end of the processor is connected with the output end of the memory; the first output end of the processor is connected with the first input end of the coprocessor; the processor is connected with the second input end of the coprocessor through the active memory unit; the output end of the coprocessor is connected with the display screen through the processor. The automobile instrument animation playing system reduces the requirement of memory resources and improves the stability of product functions.

Description

Motormeter animation play system

Technical Field

The utility model relates to an automotive electronics field, concretely relates to motormeter animation play system.

Background

The existing automobile combined liquid crystal instrument is always provided with animation effects such as starting, transition and shutdown, a liquid crystal display screen can display animation effects set by a manufacturer and is used for displaying brand images or product characteristics, and the animation effects are usually displayed when a vehicle is ignited and powered off. The prior art has two schemes to realize the animation effect: 1) the liquid crystal display screen displays a static picture in the animation period to be used as the animation effect; 2) the liquid crystal displays dynamically changing pictures (sequence frames) during animation as animation effects. That is, in the conventional art, animation effects are realized by displaying pictures. In the two existing schemes, the animation displayed in the scheme 1) is single, the displayed information is less, and the cool animation effect is avoided; scheme 2) can show more information, can realize more animation special effects, but the picture (sequence frame) of dynamic change occupies very much memory space, and the use of large-capacity memory device increases the cost of product.

Disclosure of Invention

An object of the utility model is to overcome when the instrument animation play system that exists plays the dynamic picture among the prior art, the big not enough of cost height of storage occupation space provides a low-cost motormeter animation play system.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a motormeter animation playing system comprises a display screen, a processor, a DDR (double data rate) active memory unit, a memory for storing key frame video data and a coprocessor for analyzing the key frame video data; the first input end of the processor is connected with the output end of the memory; the first output end of the processor is connected with the first input end of the coprocessor; the processor is connected with the second input end of the coprocessor through the active memory unit; the output end of the coprocessor is connected with the display screen through the processor.

Preferably, the video format parsed by the coprocessor is a YUV format.

Preferably, the processor is model ARM Cortex-A15.

Preferably, the coprocessor is of type number Cortex-M4 of ARM.

Preferably, the parsing method of the coprocessor is an h.264 decoding algorithm.

Compared with the prior art, the beneficial effects of the utility model are that: the analysis operation that this embodiment passes through the coprocessor reduces the requirement to the memory, also can satisfy the demonstration demand of car combination liquid crystal instrument in the aspect of the simultaneous display, the demonstration video data that can be smooth, this application the scheme reduces the memory resource by a wide margin, reduces treater work load, promotes the stability of product function, has reduced product cost simultaneously.

Description of the drawings:

fig. 1 is a system block diagram of an automobile instrument animation playback system according to an exemplary embodiment 1 of the present invention;

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides an automobile instrument animation playing system, which includes a display screen, a processor, a DDR (double data rate) active memory unit, a memory for storing keyframe video data, and a coprocessor for parsing the keyframe video data; the first input end of the processor is connected with the output end of the memory for storing the key frame video data; the first output end of the processor is connected with the first input end of the coprocessor for analyzing the key frame video data; the processor is connected with a second input end of the coprocessor for analyzing the key frame video data through the active memory unit; the output end of the coprocessor used for analyzing the key frame video data is connected with the display screen through the processor.

In this embodiment, the memory is configured to store the key frame video data that is used for playing the animation after being encoded in advance; when a corresponding functional module of the automobile instrument detects an animation playing trigger signal in real time, the processor reads the key frame video data from the memory and places the key frame video data in the DDR; then the processor informs the coprocessor that a video file needs to be analyzed; the coprocessor reads the key frame video data in the DDR, analyzes the key frame video data to decode the encoded key frame video data, and then sends the decoded video to the processor; the processor displays the received image information to the display screen. The chip used by the existing automobile instrument comprises the processor and the coprocessor which are integrally arranged, only the processor is often used in the instrument development process, and waste of chip resources is caused.

Illustratively, the video format parsed by the coprocessor is YUV format. When the animation effect needs to be played, the processor reads the video data on the memory and sends the data to the coprocessor for analysis, the coprocessor sends picture data in a YUV format to the processor after the analysis, the processor outputs the picture data to a screen for display after receiving the picture data, and the animation playing is completed. Because YUV does not require the simultaneous transmission of three independent video signals as in the RGB format, the transmission in YUV takes very little bandwidth.

Illustratively, the processor model is ARM's Cortex-A15, and the coprocessor model is ARM's Cortex-M4. The analytic method adopted by the coprocessor is an H.264 decoding algorithm. The original data of the animation required to be displayed by the automobile instrument is in a YUV format, and an H264 file with smaller occupied space is formed by Windows coding and is placed in a memory. Namely, the H264 file obtained after Windows coding is the key frame video data. The coprocessor Cortex-M4 is used for decoding the H.264 file and reducing the H.264 file into a file in a YUV format for display operation.

In this embodiment, when an animation effect needs to be played, the processor reads video data on the memory, and sends the data to the coprocessor for parsing, after the coprocessor parses the data, the data in the YUV format is sent to the processor, and after the processor receives the parsed data, the data is output to a screen for display, and the animation playing is completed.

The analysis operation that this embodiment passes through the coprocessor reduces the requirement to the memory, also can satisfy the demonstration demand of car combination liquid crystal instrument in the aspect of the simultaneous display, the demonstration video data that can be smooth, this application the scheme reduces the memory resource by a wide margin, reduces treater work load, promotes the stability of product function.

The above description is only for the purpose of illustrating the embodiments of the present invention, and not for the purpose of limiting the same. Various substitutions, modifications and improvements may be made by those skilled in the relevant art without departing from the spirit and scope of the invention.

Claims

1. An automobile instrument animation playing system is characterized by comprising a display screen, a processor, a DDR (double data rate) active memory unit, a memory for storing key frame video data and a coprocessor for analyzing the key frame video data; the first input end of the processor is connected with the output end of the memory; the first output end of the processor is connected with the first input end of the coprocessor; the processor is connected with the second input end of the coprocessor through the active memory unit; the output end of the coprocessor is connected with the display screen through the processor.

2. The motormeter animation play system of claim 1, wherein the video format parsed by the coprocessor is YUV format.

3. The automotive instrument animation playback system of claim 1, wherein the processor is an ARM type Cortex-a 15.

4. The automotive instrument animation playback system of claim 1, wherein the co-processor is model number ARM Cortex-M4.

5. The motormeter animation play system of claim 1, wherein the parsing method of the coprocessor is an h.264 decoding algorithm.