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Multi-display controller based on single chip and design method

A technology of display controller and design method, applied in program control design, instrument, calculation, etc., can solve problems such as difficult to control cost, insufficient number of screens, waste of performance, etc., achieve a good experience, reduce latency, and reduce GPU utilization. burden effect

Pending Publication Date: 2022-05-06
NANJING SEMIDRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The cost advantage and integration of a single chip are higher, and the cost of multiple chips cannot be controlled and will cause the system to be more complex
[0010] 2. The problem of insufficient number of screens is to cut large screens into small screens by connecting additional transfer chips
[0018] In order to meet the complex synthesis requirements of the entertainment screen, the existing solutions need to be equipped with multiple display controllers that support complex synthesis capabilities, and the cost is difficult to control, which will lead to a reduction in the number of display controllers
[0019] Once the chip design scheme is fixed, it is difficult to meet various projects, lack of flexibility or waste of performance, or even fail to meet the number of screens

Method used

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  • Multi-display controller based on single chip and design method
  • Multi-display controller based on single chip and design method
  • Multi-display controller based on single chip and design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 It is a schematic diagram of a multi-display controller based on a single chip according to the present invention, such as figure 1 As shown, the multi-display controller based on a single chip of the present invention includes an upper-level display controller A (abbreviated as DCA) and a lower-level display controller B (abbreviated as DCB), wherein,

[0050] The upper-level display controller A and the lower-level display controller B are cascaded to form a basic unit controller.

[0051] The upper-level display controller A has stronger synthesis ability, more hardware layers, and can output to the screen.

[0052] The lower level display controller B has a slightly weaker synthesis ability, only has a small amount of software layers and can receive DCA data at the same time, and can output all the received data to the screen after synthesis.

[0053] In the embodiment of the present invention, such as Figure 4 As shown, the upper-level display contro...

Embodiment 2

[0055] image 3 For the flow chart of the method for designing a multi-display controller based on a single chip according to the present invention, reference will be made below image 3 , the method for dynamically managing multimedia resources of the present invention is described in detail.

[0056] In step 301, a multiplexing unit is configured through a register.

[0057] In step 302, the upper-level controller and the lower-level controller output synthesized data to the interface through the multiplexing unit.

[0058] Preferably, the lower-level controller is cascaded with at least one of the upper-level controllers, the lower-level controller can simultaneously receive data from multiple upper-level controllers, and the lower-level controller and the upper-level controller have a one-to-many relationship.

[0059] Preferably, the lower-level controller receives and synthesizes the data output by the upper-level controller, and selects an interface for output and dis...

Embodiment 3

[0061] In the embodiment of the present invention, such as Figure 5As shown, the inventive single DCA and DCB have synthesis capability, and are delivered to the interface through displaymux, which can meet the display requirements of the operating system.

[0062] For example, the upper-level controller 1 can directly output to mipi interface 1 or mipi interface 2 through the display mux,

[0063] It can also be output to the lower-level controller 1 for synthesis, and then select a channel LVDS1 output through the display mux.

[0064] The multiplexing unit allows the controller to freely select the display interface according to the needs, without binding the interface to the controller. The controller can output to LVDS interface, mipi interface, or output to multiple LVDS interfaces at the same time, etc.

[0065] When a project with more screens is required, both the upper-level controller 1 and the lower-level controller are configured to output to the display interf...

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PUM

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Abstract

A multi-display controller based on a single chip comprises a superior display controller and a subordinate display controller, the superior display controller is used for synthesizing data and outputting the data to an interface for display after 2D acceleration; and the subordinate display controller is used for synthesizing the received data and outputting the synthesized data to an interface for display. According to the multi-display controller based on the single chip and the design method, the display controller with the multi-layer synthesis capability can be provided, the burden of a GPU can be greatly reduced, the time delay of a picture is reduced, and better experience is provided for a user.

Description

technical field [0001] The invention relates to the technical field of chip design, in particular to a cascading scheme of display controllers. Background technique [0002] The new industry dynamics represented by smart cars have increasingly complex requirements for display capabilities, posing higher challenges to single-chip solutions. [0003] Taking the smart cockpit of a car as an example, the central control main screen and secondary screen are responsible for entertainment functions, which require a complex display controller with high multi-layer synthesis capabilities. However, multiple streaming media rearview mirrors, head-up displays, rear seat displays, and control panels on the car require a sufficient number of display controllers to meet the demand. How to provide a controller that meets all requirements on a single chip, while controlling the chip area, reducing chip cost, and avoiding performance waste has become the key to design. [0004] Taking the c...

Claims

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Application Information

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IPC IPC(8): G06T1/20G06T1/60G06F9/50
CPCG06T1/20G06T1/60G06F9/5027
Inventor 陈丰叶巧玉张昆
Owner NANJING SEMIDRIVE TECH CO LTD