JP2008022390A - Picture and waveform multi-display device and multi-display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a picture and waveform multi-display device and a multi-display method for a video signal which improve usability by making it possible to decide correspondence between pictures and waveforms more instantaneously than before. <P>SOLUTION: A picture is displayed at a predetermined position on a display screen, and waveforms of a horizontal line and a vertical line are displayed at corresponding positions nearby horizontal and vertical positions of the display simultaneously to the same size with the picture to easily grasp the correspondence between the picture and waveforms, thereby instantaneously deciding a picture state without switching the display screen. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video signal waveform display apparatus and a waveform display method.

  The conventional video signal waveform display method is to display only the horizontal waveform of the video signal corresponding to the specified position on the screen on the same screen. It was hard.

JP2002-135812

  An object of the present invention is to solve the above-described problems and provide a waveform display device and a waveform display method for a video signal capable of instantaneously determining a video state.

  In order to solve the above problem, the video signal waveform display method of the present invention displays a video at a predetermined position in the display screen, the horizontal line waveform designated by a cursor or the like, the vertical line waveform, and The vector display is simultaneously displayed at an appropriate place on the same screen as the video.

  According to the present invention, since each waveform is multi-displayed at an appropriate location in the vicinity of the video display, it becomes easy to correspond to the video, and the video state can be determined instantaneously.

  According to the present invention, the horizontal waveform, the vertical waveform, and the vector waveform of the video signal corresponding to the designated position in the screen are simultaneously displayed at appropriate positions in the same screen as the video, thereby increasing the amount of information. Thus, there is no need to switch the screen, and the visibility is improved.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a first point of the present invention, which is a display screen when an image and a horizontal waveform are displayed simultaneously. Reference numeral 10 denotes a display screen, 20 denotes a video display unit, and 30 denotes a horizontal waveform display unit, which displays, for example, three waveforms 111, 112, and 113 of Y, Pb, and Pr. In the horizontal waveform display section, there are a case where a horizontal waveform corresponding to the entire video is displayed, and a case where the cursor 101 is displayed on a specific horizontal line and a horizontal waveform of only this line is displayed.

  Although this method has been practiced in the past, the position and size of the video display and horizontal waveform display do not always match due to the configuration of the display screen, and the correspondence between the video and the horizontal waveform can be grasped intuitively. It was difficult to do. In the present invention, the positions and sizes of the video display and the horizontal waveform display are completely matched to facilitate intuitive understanding of the correspondence between the video and the horizontal waveform.

  FIG. 2 is a diagram showing a second point of the present invention, in which a vertical waveform is displayed on the left (or right) of the video display with the display vertical size and position aligned. Here, the luminance / hue level of the signal is displayed on the horizontal axis, and the video time is displayed on the vertical axis. In the figure, 10 is a display screen, 20 is a video display unit, 40 is a vertical waveform display unit, and 211 to 213 are Y, Pb, and Pr components of the vertical waveform. As in the case of the horizontal waveform, the vertical waveform may be a waveform corresponding to the entire video, or a cursor 201 may be displayed on a specific vertical line, and a vertical waveform of only this line may be displayed.

  In this way, the video display and the vertical waveform display are arranged side by side and the vertical size and the position are aligned, so that the video screen and the vertical waveform can be observed correspondingly, and the visibility is improved.

  FIG. 3 shows an example in which an image, a horizontal waveform, a vertical waveform and a vector are displayed on the same screen, and 50 is a vector display section. In this example, the horizontal waveform display 30 is displayed under the video display unit 20 in the same size and position, and the vertical waveform display unit is displayed in the right side of the video display unit with the same size and position. By doing so, the video screen and the horizontal / vertical waveform can be observed correspondingly, so that the visibility is improved.

FIG. 4 is an example of a block diagram when the display shown in FIG. 3 is performed.
Here, 300 is a display, and 400 is an input video signal. The video signal 400 is enlarged / reduced to a predetermined display size by the horizontal and vertical scalers 301 and 302 and stored in the video memory 321. The level / position conversion unit 311 converts the level of the enlarged / reduced horizontal signal into a vertical position and stores it in the horizontal waveform memory 322. Similarly, the vertical signal is converted into a horizontal position by the level / position converter 312 and stored in the vertical waveform memory 323. On the other hand, the vector calculation unit 303 obtains vector components from the R, G, B or Y, Pb, Pr components in the video signal and stores them in the vector memory 324.

  The display counter 340 outputs horizontal / vertical addresses 410 and 420 of pixels to be displayed. The selection circuit 330 selects a video / horizontal waveform / vertical waveform / vector to be displayed at the position based on the horizontal / vertical address output from the display counter based on a predetermined display position, and displays 350 Send to.

  FIG. 5 shows a V waveform display method for showing the effect of the present invention. (A) is a video display screen, (b) is a waveform display screen when a V waveform is displayed in a conventional manner, and (c). Is a V waveform display screen according to the method of the present invention. When displaying a V waveform of a color bar signal in which horizontally long color bars are vertically arranged as shown in (a), the luminance level is plotted on the vertical axis and the V direction (time) of the video is plotted as in the conventional (b). When displayed on the horizontal axis, it is difficult to intuitively understand the correspondence between the V waveform and the video.

  In comparison, as shown in (c) of the present invention, the luminance level is displayed on the horizontal axis, the video V direction (time) is displayed on the vertical axis, the size of the video V axis and the waveform display V axis, and By displaying the images by matching the positions, it becomes easy to intuitively understand the correspondence between the video and the V waveform, and the visibility is improved.

It is a figure of the simultaneous display screen of a video and a horizontal waveform, and shows the first point of the present invention. It is a figure of the simultaneous display screen of the image and vertical waveform by the 2nd point of the present invention. FIG. 4 is a diagram of a screen for simultaneously displaying a video and horizontal / vertical waveforms and vectors according to the present invention. It is an example of the block which implements the display of FIG. It is a figure which shows the effect of this invention.

Explanation of symbols

10 display screen 20 video display unit 30 horizontal waveform display unit 40 vertical waveform display unit 50 vector display unit 101 horizontal position cursor 111 horizontal waveform 112 horizontal waveform 113 horizontal waveform 201 vertical position cursor 211 vertical waveform 212 vertical waveform 213 vertical waveform 301 horizontal scaler 302 Vertical Scaler 303 Vector Operation Unit 311 Level / Position Conversion Unit 312 Level / Position Conversion Unit 321 Video Memory 322 Horizontal Waveform Memory 323 Vertical Waveform Memory 324 Vector Memory 330 Selection Circuit 340 Display Counter 350 Display 400 Input Video Signal 410 Horizontal Address 420 Vertical address

Claims (6)

  A video waveform multi-display device, wherein a video image and a video signal waveform are simultaneously displayed on the same screen, and the horizontal position and size of the video display and the horizontal waveform display are matched.   A video waveform multi-display device, wherein a video image and a video signal waveform are simultaneously displayed on the same screen, and the vertical position and size of the video display and the vertical waveform display are matched.   3. The video waveform multi-display device according to claim 1, wherein vectors are simultaneously displayed on the same screen in the video display device.   A video waveform multi-display method characterized in that, in a display device for simultaneously displaying video and video signal waveforms on the same screen, the horizontal position and size of video display and horizontal waveform display are matched.   An image waveform multi-display method characterized in that, in a display device for simultaneously displaying an image and a video signal waveform on the same screen, the vertical position and size of the image display and the vertical waveform display are matched. 6. The video waveform multi-display method according to claim 4, wherein the vector is simultaneously displayed on the same screen in the video display device.

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