KR100307553B1 - apparatus for video signal - Google Patents

Abstract

PURPOSE: A device for measuring image signals is provided to precisely fit respective measurement values displayed on a screen with preset standard data and combine three measurement equipments into a single personal computer, thereby reducing the installation cost and the data maintenance efficiency. CONSTITUTION: A device for measuring image signals includes a data conversion part(10) for digital-converting analog image signals, a first imaginary driving part(24) for the communication between the data conversion part and a personal computer(PC;60), a data separation part(20) for separating the data into RGB format, YUV format and VBI format, first to third storing parts for storing RGB data, YUV data and VBI data to a memory of the PC, an image display(28) for displaying data of the RGB format into a 1/4 screen, a data conversion part(29) for converting YUV data into UV data and Y data, a vector display(31) for displaying U data and V data of the UV format data into a 1/4 screen, a data synthesizing part(32) for synthesizing Y data, UV data and VBI data, a wave form display(34) for displaying the synthesized data into a 1/4 screen in the shape of waveform, a standard data storing part(33), a data comparing part(35) for comparing the data with reference values of the standard data storing part, and a screen recording part(36) for displaying the compared values and the reference values in the other 1/4 screen.

Description

Apparatus for video signal

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image signal measuring apparatus, and in particular, functions of an analog monitor, a vector scope, and a waveform monitor, which are essential instruments in the development / manufacturing of a video camera, are provided by a window. The present invention relates to a video signal measuring apparatus which collects on a PC and displays an analog waveform display and a digital numerical display on a single monitor.

The biggest method that humans use to obtain information is by visually seeing. To achieve this, image signal processing technology has made remarkable progress until now.

In addition, pick-up and processing technology of image will continue to be developed in the future, and the direction will be miniaturization, digitalization and high speed.

As such, the most basic device in the development of video equipment will be a camera, which is a video pickup device.

Various types of measuring instruments are required for the development and production of cameras, and among them, vector scopes and waveform monitors are essential measuring instruments.

The main function of the Waveform Monitor is to express the complex video signal as a waveform. It is to analyze the level of the sync signal and the video signal. The Vector Scope is the color signal included in the video signal. It is a device that expresses the amplitude and phase of a component easily.

In a conventional method of measuring a camera using a measuring device, as shown in FIG. 1, a vector scope (2), a waveform monitor (3), and a color monitor (4) are controlled from the adjusted camera (1). Connect. The adjustment chart 5 is imaged from the camera 1, and the phase and level of the color are adjusted to a predetermined position while looking at the vector scope 2. In this case, the red and blue standards are adjusted, and the black and white standards are adjusted. Adjust the phase after level adjustment.

Subsequently, the waveform monitor 3 is used to adjust the video level, the white level, the black level and the color synchronization level of the composite video signal.

The measuring device is adjusted while the measuring person views each measuring instrument (2) and (3). Since the expression of the measuring instrument itself is analog, an error may occur depending on the measuring instrument or the measuring angle. This makes it difficult to trust the quality of the camera.

In addition, since each measuring instrument is provided separately, the installation place is restricted, and the equipment becomes high.

An object of the present invention is to provide an accurate measurement, and can be installed in a narrow place, and to reduce the cost of the video signal measuring apparatus.

1 is a schematic view showing a conventional measuring device,

2 is a schematic view showing a measuring device of the present invention;

3 is a flowchart showing a measuring device of the present invention;

4 shows a screen state of the PC monitor of the measuring apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

10 ... video input data converter 20 ... data separator

24 The first virtual driver 28 The video display

29.Data conversion section 30.2nd virtual driving section

31.Vector display section 32.Data synthesis section

33.Standard data composition 34.Waveform display

35.Data comparator 40 ... Camera

50 ... Adjusting jig 60 ... PC

According to an aspect of the present invention, there is provided an apparatus for measuring video signals, comprising: an image input data converting unit configured to receive an analog video signal and digitally convert it, and to format convert the video signal for PCI communication;

It is responsible for the communication between the video input data converter and the PC, and distributes the resources such as the intercept and memory of the video input data converter to the intercept and memory of the PC, and detects the hardware status of the video input data converter and changes the settings. A first virtual driving unit to make;

A data separator for separating the data generated by the image input data converter by a first virtual driver into an RGB format, a YUV format, and a vertical blanking nterface (VBI) format;

A first storage unit for storing RGB data from the data separation unit into a memory of a PC by a first data format having the same function as the first virtual driver;

A second storage unit for storing YUV data from the data separation unit into a memory of a PC by a second data format having the same function as the first data format;

A third storage unit for storing VBI data from the data separation unit into a memory of a PC by a third data format having the same function as the second data format;

An image display unit displaying an image of the RGB format stored in the first storage unit on a 1/4 screen of the PC monitor;

A data converting unit converting YUV data stored in the second storage unit into UV data and Y data by the second virtual driving unit having the same function as the first virtual driving unit;

A vector display unit which displays the UV format data generated by the data conversion unit on a quarter-screen of the PC monitor in the form of a vector scope with U data and V data as X-Y coordinates;

A data synthesizing unit for synthesizing Y data and UV data made by the data converting unit and VBI data made by the third storage unit;

A waveform display unit for displaying the data generated by the data synthesis unit in a waveform monitor format on a 1/4 screen of the PC monitor;

A standard data storage unit which records reference values of image data of a standard camera already known;

A data comparison unit for comparing and analyzing the magnitude and phase of the color data in the image data expressed in the vector display unit and the data of the luminance component data and the reference values of the standard data storage unit in the image data represented in the waveform display unit;

And a screen recorder for displaying the values compared in the data comparison unit and the reference values in the standard data storage unit on a 1/4 screen of the PC monitor.

Hereinafter, the video signal measuring apparatus of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4, the video signal measuring apparatus of the present invention receives an analog video signal and converts it digitally, and converts the image signal format conversion for the PCI (peripheral component interface) communication video input data conversion unit 10 and ;

It is responsible for the communication between the video input data converter 10 and the PC 60, and distributes resources such as the intercept and memory of the video input data converter 10 to the intercept and memory of the PC 60, A first virtual driver 24 which detects a hardware state of the image input data converter 10 and changes a setting;

A data separator 20 for separating the data generated by the image input data converter 10 into an RGB format, a YUV format, and a VBI (vertical blanking nterface) format by the first virtual driver 24;

A first storage unit 21 for storing RGB data from the data separation unit 20 into a memory of the PC 60 by the first data format 25 having the same function as the first virtual driver 24;

A second storage unit (22) for storing YUV data from the data separation unit (20) into a memory of the PC (60) by a second data format (26) having the same function as the first data format (25);

A third storage unit 23 for storing VBI data from the data separation unit 20 into a memory of the PC 60 by a third data format 27 having the same function as the second data format 26;

An image display unit 28 for displaying an image of the RGB format data stored in the first storage unit 21 on the 1/4 screen 61a of the PC monitor 61;

A data converter 29 for converting YUV data stored in the second storage unit 22 into UV data and Y data by the second virtual driver 30 having the same function as the first virtual driver 24;

The vector display unit 31 which displays the UV format data generated by the data conversion unit 29 on the 1/4 screen 61b of the PC monitor 61 in the form of a vector scope with U data and V data as XY coordinates; ;

A data synthesizing unit 32 for synthesizing the Y data and the UV data made by the data converting unit 29 and the VBI data made by the third storage unit 23;

A waveform display unit 34 for displaying the data generated by the data synthesizing unit 32 in a waveform monitor format on the 1/4 screen 61c of the PC monitor 61;

A standard data storage unit 33 for recording a reference value of image data of a standard camera already known;

The magnitude and phase of the color data in the image data represented on the vector display unit 31 and the data of the luminance component and the reference values of the standard data storage unit 33 in the image data represented on the waveform display unit 34 are displayed. A data comparison unit 35 for comparative analysis;

And a screen recorder 36 which displays the values compared by the data comparator 35 and the reference values in the standard data storage 33 on the 1/4 screen 61d of the PC monitor 61.

2 and 4, reference numeral 500 is embedded in the PC as a capture card (capture card) for receiving an image signal.

When the measuring device configured as described above first captures an adjustment chart 70 from the adjusted camera 40, the RGB data, that is, the adjustment chart 70, is displayed on the monitor 61 of the PC. ) Is displayed.

Further, the measured vectorscope and waveform are respectively displayed on the 1/4 screens 61b and 61c of the PC monitor 61, and on the other 1/4 screen 61d of the PC monitor 61, respectively. The data compared by the data comparator 35 and the reference data of the standard data are displayed together.

At this time, if the user adjusts through the adjustment jig 50 to match the reference data, the compared data are displayed digitally on the screen according to the adjusted screen state so that the user can easily see the difference between the reference data and the reference data. This allows accurate measurement.

Therefore, since the expressions of the vector scope and the waveform monitor, which are conventionally separate devices, are analogized, an error may occur depending on the measuring instrument or the measuring angle, and an error occurs for each measuring instrument. Unlike the present invention, the measuring device of the present invention provides the functions of analog monitors, vector scopes, and waveform monitors, which are essential instruments in the development and manufacture of video cameras. Based on the data collected on one PC 60 to display the analog waveform display and the digital numerical display on one monitor 61, to simplify the measurement and reduce the cost of the equipment.

When configured in this way, three measuring instruments such as color monitor, vector scope, and wave form monitor can be integrated into one PC to reduce equipment cost, and each measurement value displayed on the screen can be accurately matched to the standard data set by the data comparison unit. In addition, the management of data can increase production efficiency.

Claims (1)

A video input data converter (10) for receiving an analog video signal and converting the digital signal and for converting the video signal for PCI (peripheral component interface) communication; It is responsible for the communication between the video input data converter 10 and the PC 60, and distributes resources such as the intercept and memory of the video input data converter 10 to the intercept and memory of the PC 60, A first virtual driver 24 which detects a hardware state of the image input data converter 10 and changes a setting; A data separator 20 for separating the data generated by the image input data converter 10 into an RGB format, a YUV format, and a VBI (vertical blanking nterface) format by the first virtual driver 24; A first storage unit 21 for storing RGB data from the data separation unit 20 into a memory of the PC 60 by the first data format 25 having the same function as the first virtual driver 24; A second storage unit (22) for storing YUV data from the data separation unit (20) into a memory of the PC (60) by a second data format (26) having the same function as the first data format (25); A third storage unit 23 for storing VBI data from the data separation unit 20 into a memory of the PC 60 by a third data format 27 having the same function as the second data format 26; An image display unit 28 for displaying an image of the RGB format data stored in the first storage unit 21 on the 1/4 screen 61a of the PC monitor 61; A data converter 29 for converting YUV data stored in the second storage unit 22 into UV data and Y data by the second virtual driver 30 having the same function as the first virtual driver 24; The vector display unit 31 which displays the UV format data generated by the data conversion unit 29 on the 1/4 screen 61b of the PC monitor 61 in the form of a vector scope with U data and V data as XY coordinates; ; A data synthesizing unit 32 for synthesizing the Y data and the UV data made by the data converting unit 29 and the VBI data made by the third storage unit 23; A waveform display unit 34 for displaying the data generated by the data synthesizing unit 32 in a waveform monitor format on the 1/4 screen 61c of the PC monitor 61; A standard data storage unit 33 for recording a reference value of image data of a standard camera already known; The magnitude and phase of the color data in the image data represented on the vector display unit 31 and the data of the luminance component and the reference values of the standard data storage unit 33 in the image data represented on the waveform display unit 34 are displayed. A data comparison unit 35 for comparative analysis; And a screen recorder 36 which displays the values compared by the data comparator 35 and the reference values in the standard data storage 33 on the 1/4 screen 61d of the PC monitor 61. Image signal measuring device.