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Tconless screen and standard screen compatible method

A standard screen and status technology, applied in the direction of selective content distribution, image communication, electrical components, etc., can solve problems such as increased costs, software operation errors, etc., and achieve the effect of improving work efficiency and reducing impact

Inactive Publication Date: 2017-11-10
SICHUAN CHANGHONG ELECTRIC CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to propose a method for compatibility between tconless screens and standard screens, which solves the problems of increased costs in traditional technology and the problems of software operation errors caused by artificial selection of screen parameters.

Method used

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Embodiment

[0029] In this case, the MST648 chip of MStar Technology is used as the main CPU, and the matching screens are AUO's Tconless screen and LG's standard screen. In order to realize the compatibility between the tconless screen and the standard screen, the technical means adopted in this embodiment are as follows:

[0030] 1. The SAR1 port of the main chip is reserved during the design of the hardware motherboard for the detection of Tconless screens and standard screens.

[0031] 2. On the motherboard with a standard screen, leave the SAR1 port empty. Since the MST648 chip has a pull-down circuit on the SAR1 port, the voltage is low when the IO port is empty;

[0032] 3. On the motherboard with Tconless screen, design a pull-up circuit around the SAR1 port to ensure that the input voltage state of the IO port reserved on the motherboard of the Tconless screen is high, while the input voltage state of the IO port on the motherboard of the standard screen is low. Just the opposit...

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Abstract

The invention relates to the technical field of TV screen module software control, and discloses a tconless screen and standard screen compatible method, aiming to solve the problem that the compatible scheme in the prior art is high in cost and the manual screen parameter selection error is easy to cause the software operation error. The method is summarized as that the IO port of the main chip is reserved during the hardware design for the screen type detection; on the main board with the standard screen and the main board with the Tconless screen, the state of the reserved IO port is designed through a pull-up circuit or a pull-down circuit to make the state opposite; in the program operation process, by reading the reserved IO state, whether the currently used screen is the tconless screen and the standard screen is determined according to the IO port state, if the screen is the tconless screen, the main program loads the Tcon program; and if the currently used screen is the standard screen, the Tcon program is not loaded. The method is applicable to the compatibility design of a TV module.

Description

technical field [0001] The invention relates to the technical field of TV screen module software control, in particular to a method for compatibility with tconless screens and standard screens. Background technique [0002] As a display device, TV is mainly composed of three parts: main board, power board and screen module. The function of the TCON module is to process the VBO or LVDS image data input signal sent by the motherboard, and convert it into an ISP or EPI signal that matches the LCD screen and directly upload it to the screen. For standard screens, the Tcon module is integrated at the screen end, and the cost is relatively high. The Tconless screen means that the Tcon module is not integrated on the screen side, and the Tcon module is integrated on the TV motherboard or the Tcon chip is integrated inside the MCU. The cost of purchasing screen resources is relatively low. [0003] Various chip manufacturers already have many plans to integrate the Tcon chip of th...

Claims

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Application Information

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IPC IPC(8): H04N21/426H04N21/443
CPCH04N21/426H04N21/443
Inventor 杜洋
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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