CN201150093Y - LCD monitor with automatic display mode switching - Google Patents

Abstract

The utility model discloses a liquid crystal display for automatically switching display modes. The liquid crystal display includes a digital signal receiving unit, a signal authentication unit, an image processing unit and a liquid crystal panel module. The digital signal receiving unit is used to receive a digital image signal; the signal authentication unit is coupled to the digital signal receiving unit to determine whether the digital image signal conforms to a communication protocol and to generate a control signal; the image processing unit is coupled to the digital signal The receiving unit and the signal authentication unit are used to determine the display mode of the liquid crystal display according to the control signal, and process the digital image signal according to the display mode to generate an output signal; the liquid crystal panel module is coupled to the image processing unit, It is used to display the image picture corresponding to the output signal.

Description

LCD monitor with automatic display mode switching

technical field

The utility model relates to a liquid crystal display, in particular to a liquid crystal display which automatically switches display modes.

Background technique

In recent years, liquid crystal displays have gradually become the mainstream of computer screens in the market. In order to meet consumers' different preferences for screen settings, almost all LCD screens provide on screen display (OSD) control functions, allowing consumers to customize their own You can adjust the settings such as chroma, brightness, and contrast of the screen according to your preferences. In order to provide convenience to consumers, some LCD screens preset multiple display modes, such as text mode, picture viewing mode, video viewing mode, video game mode, etc., and each display mode has been equipped with appropriate screen settings, such as Saturation, brightness, contrast, etc. are pre-adjusted to the best state for consumers, so that the LCD screen can have the best performance in different display modes, and let consumers feel the most comfortable use environment. However, consumers have to manually adjust the display mode of the LCD screen every time the displayed content is different, which obviously causes troubles to consumers. Over time, they may forget to switch the display mode, thus making the LCD screen unable to exert its maximum performance.

Contents of the invention

The purpose of this utility model is to provide a kind of liquid crystal display of automatic switching display mode, whether to determine whether to automatically switch the display mode of liquid crystal display by detecting whether the image signal is transmitted through an authentication protocol (authentication protocol).

In order to achieve the above purpose, the utility model provides a liquid crystal display with automatic switching display mode, which includes a digital signal receiving unit, a signal authentication unit, an image processing unit and a liquid crystal panel module. The digital signal receiving unit is used to receive a digital image signal; the signal authentication unit is coupled to the digital signal receiving unit to determine whether the digital image signal conforms to a communication protocol and generate a control signal; the image processing unit is coupled to The digital signal receiving unit and the signal authentication unit are used to determine the display mode of the liquid crystal display according to the control signal, and process the digital image signal according to the display mode to generate an output signal; the liquid crystal panel module is coupled to In the image processing unit, it is used to display the image frame corresponding to the output signal.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is the liquid crystal display of the automatic switching display mode of the present utility model;

Among them, reference signs:

100 LCD display

110 liquid crystal display controller

111 analog image receiving unit

112 digital image receiving unit

113 Analog to Digital Converter

114 multiplexer

115 HDCP authentication unit

116 image processing units

117 image output interface circuit

120 LCD panel module

Detailed ways

Certain terms are used throughout the specification and following claims to refer to particular components. Those of ordinary skill in the art will appreciate that hardware manufacturers may refer to the same component by different terms. This description and the following claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification and the subsequent claims is an open term, which should be understood as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

Recently, in response to digital transmission, a high-definition multimedia interface (High-Definition Multimedia Interface; HDMI) interface that is more effective and faster than the DVI interface has been developed. At present, there are more and more digital audio-visual equipment (such as Players and monitors, etc.) use this interface. And at present, an organization called Digital Content Protection (LLC) has developed a standard called High-bandwidth Digital Content Protection (HDCP), which is used to protect the copyright of digital entertainment audio-visual products and avoid such software products are illegally copied or disseminated during transmission or playback, please refer to "http://www.digital-cp.com" for more detailed specifications of HDCP. The HDCP standard includes an authentication protocol through which an HDCP transmitter (such as a playback device) can confirm whether an HDCP receiver (such as a display device) is authorized to receive HDCP-protected content , when confirmed, the content protected by HDCP encryption will be transmitted from the HDCP transmitter to the HDCP receiver using the shared secret key established during the authentication process to prevent any eavesdropping device from stealing the HDCP protection Content. Since the HDCP standard can effectively protect digital content, more and more entertainment companies adopt this standard to protect products from infringement. The film industry is one of the better examples. According to the above-mentioned market development trend, it can be found that when an LCD screen using an HDMI interface receives a signal transmitted through the HDCP standard in the future, it can be determined that the signal is most likely to transmit a moving image signal. The utility model utilizes this feature exactly to solve the problem of known technology.

Please refer to FIG. 1 , which is a liquid crystal display of an automatic switching display mode of the present invention. The liquid crystal display 100 includes a liquid crystal display controller 110 and a liquid crystal panel module 120 . The liquid crystal display controller 110 also includes an analog image receiving unit 111, a digital image receiving unit 112, an analog-to-digital converter (ADC) 113, a multiplexer (MUX) 114, an HDCP authentication unit 115, an image processing unit 116, and an image output interface circuit 117. The analog image receiving unit 111 is used for receiving analog image signals, and the digital image receiving unit 112 is used for receiving digital image signals. The analog image signal is then processed by the analog-to-digital converter 113 and converted into a digital format, and then transmitted to the multiplexer 114; The HDCP authentication unit 115 judges whether the digital image signal conforms to a communication protocol, more specifically, the HDCP authentication unit 115 judges whether the digital image signal conforms to a communication protocol confirmed by the HDCP standard. If it matches, it means that the digital image signal is most likely to be a dynamic image signal such as a movie picture, and at this time, the liquid crystal display 100 enters into a dynamic image display mode, and the HDCP authentication unit 115 generates a control signal Sc to instruct the image processing unit 116 to follow the Various settings in the dynamic image display mode are used to process the digital image signal, including adjusting the brightness, contrast, hue, gamma value (Gamma) of the digital image signal, etc., and performing an acceleration on the digital image signal The overdrive mechanism accelerates the reaction speed of the liquid crystal molecules by adjusting the voltage value output to the electrodes, so that the liquid crystal display can display better image quality after being accelerated. The output signal processed by the image processing unit 116 is sent to the liquid crystal panel module 120 after the image output interface circuit 117 determines the output format (such as LVDS, RSDS, etc.), and the liquid crystal panel module 120 can display the image picture corresponding to the output signal.

To sum up, the HDCP standard is a major driving force for the protection of digital audio-visual content in the future. By judging whether the image signal is transmitted through a confirmation communication protocol in this standard, we can know whether the currently transmitted image signal is a movie. Screen and other dynamic images, so when the image signal transmitted by this communication protocol is detected, the liquid crystal display will automatically enter the dynamic image display mode, and the user can avoid the trouble of switching the display mode by himself.

Certainly, the utility model also can have other various embodiments, under the situation of not departing from the spirit and essence of the utility model, those skilled in the art can make various corresponding changes and distortions according to the utility model, but these Corresponding changes and deformations should all belong to the scope of protection of the appended claims of the utility model.

Claims (4)

1, a kind of LCD of the display mode that automaticallyes switch is characterized in that, includes:

One digital signal receiving element is used for receiving a data image signal;

One signal authentication unit is coupled to this digital signal receiving element, is used for judging whether this data image signal meets a communication protocol and produce a control signal;

One graphics processing unit is coupled to this digital signal receiving element and this signal authentication unit, is used for deciding according to this control signal the display mode of this LCD, and handles this data image signal to produce an output signal according to this display mode; And

One liquid crystal panel module is coupled to this graphics processing unit, is used for showing the pairing image frame of this output signal.

2, LCD according to claim 1 is characterized in that, this signal receiving unit receives this data image signal by a high resolution multimedia interface.

3, LCD according to claim 1 is characterized in that, also includes:

One analog signal receiving element is used for receiving an analog picture signal; And

One analog digital converting unit is coupled to this analog signal receiving element and this graphics processing unit, is used for this analog picture signal is converted to number format and is sent to this graphics processing unit.

4, LCD according to claim 1 is characterized in that, the set point of several display characteristics of this this LCD of display mode standard, and this display characteristic includes brightness, contrast, form and aspect, gamma value.

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