Display frequency conversion method and system

A technology of frequency conversion system and target frequency, which is applied in the field of improving display frequency conversion efficiency, and can solve problems such as large power consumption

Active Publication Date: 2021-01-05
FUZHOU ROCKCHIP SEMICON
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  • Claims
  • Application Information

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Problems solved by technology

The frequency conversion of memory mainly adopts three types of methods. The first type is to let the CPU execute frequency conversion software, and the second type is to use dedicated hardware modules to execute frequency conversion instructions. These frequency conversion instructions require a lot of power consumption. It is necessary to propose a method that can reduce frequency conversion Methods

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  • Display frequency conversion method and system
  • Display frequency conversion method and system

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Embodiment Construction

[0017] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0018] Such as figure 1 As shown, it is a display frequency conversion method, which includes the following steps. When the frequency conversion starts, S101 the processing unit writes the target frequency into the shared storage unit, and S102 cancels the interrupt controller’s shielding of the coprocessor receiving the interrupt signal sent by the image processing unit , S103 The image processing unit sends an interrupt signal, S104 After receiving the interrupt signal, the coprocessor reads the target frequency in the shared storage unit, S105 The coprocessor calls the pre-execution entry stored in the first vector address to complete the frequency conversion setting. Specifically, at the beginning of frequency conversion, the syst...

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Abstract

The invention provides a display frequency conversion method and system. The method comprises the steps that when frequency conversion starts, a processing unit converts a target frequency into a binary character and sends the binary character to an interrupt controller, wherein the mask bit arrangement of the interrupt controller is the same as that of the binary character; a coprocessor reads the mask bit arrangement mode of the interrupt controller to obtain a target frequency; and the image processing unit sends an interrupt signal, and after the coprocessor receives the interrupt signal,the coprocessor calls a pre-execution entry stored in a first vector address to complete frequency conversion setting. According to the scheme, the frequency conversion is executed by utilizing the coprocessor (generally referring to an MCU, MicroControl Unit) in the heterogeneous system; and the target frequency is transmitted to the coprocessor through the register mask bit of the interrupt controller, and then the coprocessor is used for frequency conversion operation, so that the burden of the processing unit can be reduced, and the technical effect of reducing power consumption is achieved.

Description

technical field [0001] The invention relates to the field of display frequency conversion, in particular to a method for improving display frequency conversion efficiency. Background technique [0002] The frequency conversion of existing embedded system memory mainly needs to avoid the interference of interactive scenes, such as avoiding abnormal user screens, so it is necessary to obtain the information of the blanking period of each frame of the image processor. The existing technology generally allows the image processor to When entering the blanking period, an interrupt signal is sent to notify the arrival of the variable frequency opportunity, and the CPU decides whether to perform memory frequency conversion. The frequency conversion of memory mainly adopts three types of methods. The first type is to let the CPU execute frequency conversion software, and the second type is to use dedicated hardware modules to execute frequency conversion instructions. These frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/16G06F9/30
CPCG06F13/1694G06F9/30098Y02D10/00
Inventor 陈有敏谢修鑫
Owner FUZHOU ROCKCHIP SEMICON
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