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Display timing parameter adaptive adjusting method for display control device

An adaptive adjustment and display control technology, applied in static indicators, electrical digital data processing, cathode ray tube indicators, etc., can solve the problem of setting resolution, not actively adjusting the best resolution of the display, and not being able to adjust the resolution And other issues

Active Publication Date: 2007-08-29
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, although computers and other display control devices can recognize the resolution supported by the display, they do not actively adjust to the optimal resolution of the display, but allow users to manually set the resolution.
For embedded devices such as monitors, most of them do not provide an interface for users to set the resolution, or even cannot adjust the resolution at all. In this case, if the display does not match the default resolution of the device, it will be very troublesome to change

Method used

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  • Display timing parameter adaptive adjusting method for display control device
  • Display timing parameter adaptive adjusting method for display control device

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Embodiment Construction

[0026] The following embodiments utilize the display control chip realized by FPGA / ASIC, can access the EDID (extended display identification data) of the display through the DDC (display data channel) interface, obtain the timing parameters of the display, and automatically adjust the timing of the output signal according to these parameters parameters to achieve the best match with the monitor.

[0027] The logic block diagram of the display control chip implemented by the FPGA / ASIC is shown in Figure 2, which mainly includes a timing generation unit, a DDC control unit, a video memory control unit, and a hot-plug detection unit. The digital display signal generated by the display control chip is converted into a corresponding standard display signal through the VGA or DVI interface chip, and connected to the display together with two DDC signals. For a display with a DVI interface, a hot plug detection signal HPD will be output to the display control chip.

[0028] The dis...

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Abstract

The invention relates to an adaptive adjustment method for adjusting display-timing parameters, which is used for the mainframe of medical equipment to adaptively adjust the display-timing parameters according to the actual timing parameters of the monitor, such as resolution ratio, so it makes the monitor work in the most optimal condition without setting. Its feature includes the following steps: A. the display-controlling chip visits EDID of the monitor via DDC interface the timing parameters supported by the monitor or the best timing parameters. B. the system software automatically sets the clock frequency and the display-timing parameters register according to these parameters in order to make the timing of the output signal to match the monitor.

Description

【Technical field】 [0001] The invention relates to a display timing parameter self-adaptive adjustment method of a display control device, and is especially suitable for medical monitors and other devices. 【Background technique】 [0002] Usually, devices such as medical monitors include a host and a display. The host generally includes a display control device to generate display signals with specific timing to drive the display. In addition to medical monitors, other devices with hosts and displays, such as computers, also adopt similar schemes. [0003] See Figure 1 for the timing sequence of the digital display signals that drive the display. in, [0004] thd and tvd are effective periods of line and field respectively, which are the number of horizontal pixels and the number of vertical pixels. [0005] thp, tvp are line and field synchronization signal pulse width respectively. [0006] thF, tvf are line and field leading period respectively, also called line and fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G5/00G06F3/147
CPCG09G2370/047G09G2320/08G09G5/008
Inventor 万力劢姚力
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD