KR200396105Y1 - Implementation of Medical Image LCD controller using Multi-Image Equipment - Google Patents

Abstract

The present invention relates to an image LCD control device capable of multiple image input suitable for medical use.

Digital imaging devices use various video signal formats processed according to the characteristics of the device. Therefore, in order to process and display the image signal of the device as described above for each device, it is necessary to mount a controller capable of processing the image signal of the corresponding device, so that the existing LCD controller is not suitable for applying to various medical devices. In addition, existing LCD controllers are not suitable for medical use.

The present invention aims to propose a video controller capable of supporting high resolution and capable of processing a variety of input signals, and is capable of supporting DVI, D-SUB, Component, and Composite. And the types and characteristics of video signals such as S-Video, and the characteristics of the structure and signal processing of VGA video cards, etc., and based on this, the entire module of the LCD controller board system is constructed, It also detects PC signals so that video signals from various devices can be processed and displayed.

Description

Imagingment of Medical Image LCD controller using Multi-Image Equipment}

The present invention relates to an LCD controller (LCD controller), and more particularly to a video LCD control device capable of multiple image input to be suitable for medical use.

Projection display is divided into two categories, CRT method and LCD method, depending on the product image method.

   LCD method has the advantages of ultra light weight, thin external size, high resolution and low power consumption, and is mainly composed of products that apply LCD compatible with various PCs and workstations. The scope of application is spreading throughout.

In addition, LCD prices are further accelerating consumer demand as LCD prices fall due to falling LCD panel prices.

However, despite the characteristics of the LCD as described above, there is a limitation in the application of the existing LCD due to the problem of resolution to apply to a specialized field, such as medical.

In addition, many digital images such as CT (Computerized Topography), Magnetic Resonance Imaging (MRI), and ultrasound images are used in the medical devices.

Such devices are able to store the results in digital data instead of analog data, which is difficult to store, and thus are indispensably used in recent years.

However, such digital imaging apparatuses exhibit various video signal formats depending on the characteristics of the apparatus.

Therefore, in order to process and display the video signals from the devices as described above for each device, a controller capable of processing the video signals of the corresponding device must be mounted.

It is not suitable to apply existing LCD controllers to various medical devices.

In this invention, in view of the above, it is possible to propose a video controller capable of supporting a high resolution display capable of high-resolution display suitable for medical use and processing a variety of input signals. PC signals and components such as DVI and D-SUB ( The types and characteristics of TV signals such as Component, Composite, and S-Video are analyzed, and the characteristics of the structure and signal processing of VGA video cards are analyzed, and based on this, the entire LCD controller board system is analyzed. The module is configured to detect not only TV signals but also PC signals, so that video signals from various devices can be processed and displayed.

The present invention, the PC signal interface means for receiving the PC signal of the DVI, D-SUB, TV signal interface means for receiving the TV signal, the signal input from the video signal of DVI or D-SUB from the PC signal interface means Digital YUV by inputting S-Video, Component and Composite video signals inputted through TV signal interface means and video signal selection means for detecting and switching to LCD display control means. A video decoder which converts the data into an LCD display control means and outputs it to the LCD display control means, and a digital display signal selecting means and an LCD display control means having a process for processing and displaying the image data input from the video decoder on the LCD panel Characterized in that configured.

When the present invention is described in detail with reference to the embodiment shown in Figure 1 attached to the present invention as follows.

The present invention provides a PC signal interface unit 10 for receiving a PC signal of DVI, D-SUB, a TV signal interface unit 20 for receiving a TV signal of a component, a composite, A video signal selector 30 for detecting and switching an input signal of a DVI or D-SUB video signal input through a PC signal interface means and a TV signal interface 20 A video decoder 40 for converting the S-Video, component, and composite video signals inputted into the digital YUV data into the LCD control driver 50, and outputting them to the LCD control driver 50, the video signal selector 30, and the video decoder An LCD controller driver 50 for processing the image data input from the display 40 and displaying it on the LCD panel 80, an image data storage unit 60 for storing the input image data, and an LCD controller driver. Action 50 And a FET switch 90 for power sequencing of the LCD panel 80.

This invention like this,

PC signal interface unit 10 and TV signal interface unit 20 to receive and process TV signals such as DVI, D-SUB, and TV signals such as Component, Composite, and S-Video. ).

DVI is a video technology that can store and play back video images digitally. It is a new format of video interface technology designed to maximize the quality of high-end display devices and high-end graphics cards.

The characteristic of LCD is to express color digitally. Therefore, in case of DVI (Digital Video Image), the converted digital signal from VGA video card is directly transmitted to LCD without any other conversion, so it can be displayed on the panel without conversion process, so that better image quality can be realized by reducing signal loss and distortion. Can be.

  D-SUB is divided into R, G, B, vertical (V), and horizontal (H) signals. It is the most efficient in transmission and connects color information and synchronization signal separately.

The component signal is a video signal divided into three components of luminance (Y) and color difference (Cb, Cr), respectively, and transmitted. The component signal has the best image quality among the three signals (Component, Composite, S-Video).

 The composite signal is a method of combining three signals of luminance (Y) and color difference (Cb, Cr) without being separated and transmitting them into one. The picture quality is the worst because it combines the three signals without separating them.

  In addition, S-Video combines three video signals with luminance (Y) and chrominance signals (Cb, Cr) into one and transmits them as two components. The image quality is higher than that of composite, but the image quality is lower than that of components.

The video signal selector 30 is a selector that finds an input video signal among DVI or D-SUB input to the PC signal interface unit 10, and switches and outputs the input signal.

It is composed of BA7657F, a Seletor Chip.

It plays a role of switching internally input RGB signal and HD / VD signal.

The video decoder 40 is composed of the VPC3230, which is a video decoder. The video decoder 40 receives the TV signal S-Video, the component, and the composite video signal and outputs it to the LCD control driver 50 as 8Bit (4: 2: 2) digital YUV data. do.

The YUV data is a data format in which color is represented by three pieces of information: a luminance signal Y, a difference U between the luminance signal and a red component, and a difference V between the luminance signal and a blue component.

The data output of the video decoder 40 allows 8-bit digital output to be output in the form of luminance / color (Y / C) format.

Read and write operations for the internal registers of the video decoder 40 are performed through the LCD control driver 50 through the I ² C bus, and various input / output operation modes and output types can be adjusted by programming the internal registers.

As the LCD display control means, an LCD control driver 50, an image data storage unit 60, and a program memory unit 70 are configured.

The LCD control driver 50 receives data from the image signal selection unit 30 and the video decoder 40 and displays the data on the LCD panel.

The resolution indicates how finely detailed the arc can be.

The chart shown in FIG. 2 analyzes the resolution of a conventional LCD. The conventional LCD has a maximum resolution of VGA (640 * 480), SVGA (800 * 600), XGA (1024 * 768) or SXGA (1280 * 1024). Have

However, LCDs with such resolutions are not suitable for applications requiring high definition clarity such as medical use.

In the present invention, the LCD control driver 50 is configured as GM1601 to support WUXGA high resolution display.

3 is a view showing a display screen when using a conventional LCD driver, Figure 4 is a view showing a display screen of the LCD equipped with the LCD control driver applied to the present invention.

The GM1601 is interfaced to the outputs of the video signal selector 30 and the video decoder 40. The GM1601 uses two input ports among the input ports, and the Y / UV port is not used and is configured as a ground state.

In video video signal input mode, the color space is converted to 32Bit RGB in 8bit (4: 2: 2) YUV mode.

 The LCD control driver 50 features a built-in microcontroller as a high-resolution LCD control driver, which eliminates the need for a separate microcontroller, automatically detects the input format, and automatically positions the image. It has a On-Screen Display (OSD) controller. Genesis. "gm1601 preliminary Product Brief", 2005]

The image data storage unit 60 includes memory means (SDRAM) for storing an input image, and the program memory unit 70 includes memory means (Nor-) having a program for operating the LCD control driver 50. Flash Memory).

Referring to the display operation process of the present invention having such a configuration as follows.

The image signal selector 30 selects image data input through the DVI and D-SUB terminals and outputs the image data to the LCD control driver 50.

The LCD control driver 50 displays the DVI signal in the WUXGA resolution on the LCD panel 80 as it is.

The D-SUB signal is converted to digital data through an ADC (analog to digital) process and displayed on the LCD panel in WUXGA resolution through the LCD control driver.

  In addition, the video decoder 40 selects the composite, component, and S-Video video signals input through the TV signal interface unit 20 to convert analog processing operations and analog data to digital (ADC), and converts the converted digital data. To the LCD control driver 50.

The video decoder 40 receives a video signal of a composite, a component, and an S-Video as an input, and outputs an 8Bit (4: 2: 2) digital YUV to the LCD control driver 50.

  The LCD control driver 50 displays the image data input from the video decoder 40 on the LCD panel 70 in the resolution of WUXGA.

 As described above, the present invention understands and analyzes the types and characteristics of signals such as DVI, D-SUB, Composite, Component, and S-Video. By outputting DVI, D-SUB, Composite, Component and S-Video signals from the input socket to the LCD panel in WUXGA level resolution, it is possible to provide an LCD control device suitable for various medical devices. do.

1 is a block diagram showing the configuration of an image LCD (LCD) control device capable of multiple image input of the present invention.

2 is a diagram showing a conventional LCD resolution.

3 is a view showing an image displayed by a conventional LCD driver.

4 is a view showing a display screen of the LCD equipped with the LCD control driver applied to the present invention

Claims (4)

PC signal interface unit 10 for receiving a PC signal, TV signal interface unit 20 for receiving a TV signal, DVI or D-SUB video signal input through the PC signal interface means A video signal selector 30 for detecting and switching to the LCD control driver and a TV signal input to the TV signal interface unit 20 are converted into digital YUV data and converted into digital YUV data. A video controller 40 for outputting to the video decoder 40, an image signal selector 30, and video data input from the video decoder 40 to process and display the LCD data on the LCD panel 80. ), An image data storage unit 60 for storing input image data, a program memory unit 70 storing a program for operating the LCD controller driver 50, and an LCD panel 80 displaying an image. Pho Video LCD control device capable of multiple image input, characterized in that is configured to include. The apparatus of claim 1, further comprising a FET switch (90) for power sequencing of the LCD panel (80). The apparatus of claim 1 or 2, wherein the PC signal interface unit (10) comprises interface means for receiving PC signals of DVI and D-SUB. According to claim 1 or claim 2, TV signal interface unit 20 is capable of multiple video input, characterized in that consisting of the interface means for receiving S-Video, Component (Composite), Composite (Composite) signal Video LCD Control Unit.