Graphical user interface (GUI) system achieving method based on collaboration mechanism of central processing unit (CPU) and digital signal processor (DSP)
A technology of system implementation and coordination mechanism, applied in the direction of program control devices, etc., can solve the problem of high GPU power consumption, achieve the effects of increasing versatility, reducing system power consumption, and improving real-time performance
Inactive Publication Date: 2014-06-25
SOUTHEAST UNIV
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Problems solved by technology
Although the performance of the GPU is higher than that of a general-purpose processor, the GPU also has certain defects. First, the GPU cannot perform calculations independently, and requires the CPU to provide instructions to run; moreover, the power consumption of the GPU is relatively high, which is harmful to some handheld device is an Achilles' heel
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[0030] A kind of GUI system implementation method based on CPU and DSP synergy mechanism, first design GUI system, GUI system comprises message management module, window and control management module, graphic device interface module, graphic library module and equipment abstraction layer module; Its characteristic is to design The CPU is responsible for the process control of each module of the entire GUI system, which includes the interaction with peripheral devices and other modules, and the DSP is responsible for video codec, picture decoding and picture rendering; the CPU controls the work of the DSP;
[0031] The GUI system is designed to be composed of a CPU and a DSP; the CPU and the DSP use a shared memory method for data transmission, and notify the other party in the form of a message packet through the bus;
[0032] For CPUs:
[0033] After the CPU receives the drawing information through the graphics device interface module, it obtains the device context informatio...
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A graphical user interface (GUI) system achieving method based on a collaboration mechanism of a central processing unit (CPU) and a digital signal processor (DSP) is suitable for industrial control products and consumer electronic products, combines control capacity of the CPU and parallel processing capacity of a DSP, and improves attractiveness, flexibility and performance of a picture user interface system. The system comprises two parts of the CPU and the DSP, wherein the CPU is mainly responsible for flow control of the whole GUI system, the flow control comprises interaction with peripheral equipment and other modules, the DSP is responsible for tasks of video encoding and decoding, picture decoding, picture rendering and the like of a complex computer. Data transmission between the CPU and the DSP is achieved through a shared memory method, opposite sides are informed in information package mode through a bus, and synchronization is achieved.
Description
technical field [0001] The invention is used to realize a graphic user interface based on DSP software decoding, and is applied in industrial control and consumer electronic products, such as mobile phones, PDAs, vehicle systems, smart home appliances and other fields. Background technique [0002] The embedded graphical user interface (GUI) system is an important part of the embedded real-time operating system. The importance of the GUI system is becoming more and more prominent. [0003] Graphical user interface system is system-level support software, which can form a complete operating system together with file system and operating system kernel. Manage the interaction information between the system and the user. [0004] Compared with general-purpose GUI systems, the basic requirements for GUI in embedded systems include: light weight, less resource occupation, high performance, high reliability, and configurability. [0005] At this stage, the realization of GUI mos...
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IPC IPC(8): G06F9/44
Inventor 黄少珉包冰莹戚隆宁杨军
Owner SOUTHEAST UNIV