JPH10210498A - Edit device for image data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an edit device for image data, without deterioration in image quality in the case of moving and composting 420p and 4224 signals. SOLUTION: In the processing of image data of a 4520p signal, a frame information detection means 2 detects whether a frame of image data is an odd number frame or an even number frame. When the image data matches frame information read from a storage means 3 storing frame information detected by the frame information detection means 2, an edit control means 4 moves the image data by 2n lines (n is 0 and a natural number) only to a vertical direction of a TV screen and when the image data do not match, the edit control means 4 moves the image data by only (2n+1) lines toward the vertical direction of the TV screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various editing operations such as moving and duplicating image data.
This is effective for a 20p signal (4224 signal).

[0002]

2. Description of the Related Art Recently, new broadcasting systems such as the EDTV2 system and the HD system have been started. Among them, in the EDTV2 system, an editing device has not been commercialized yet, although a dedicated camera and a VTR have been commercialized.

First, the EDTV2 signal will be briefly described. The EDTV2 signal is based on a progressive signal, unlike the interlace signal of the current system.

FIG. 5 is a schematic diagram showing an interlace system and a progressive system. As shown in the figure, the interlaced system is composed of about 30 image data per second, and one image has 525 scanning lines. The interlace method is such that one image data having 525 scanning lines is interlacedly scanned one scanning line at a time and transmitted as image data of about 60 sheets per second in 262.5 lines. The progressive system is different from the interlace system in that
The image data is composed of about 60 image data per second, and one image data is composed of 525 scanning lines that do not perform interlaced scanning.

[0005] The progressive signal sequentially scanned at 525 lines per screen is a Recommendatio.
n ITU-R. It is digitized in the form of 8: 4: 4, which is twice the sampling frequency of 4: 2: 2 specified in 601-3, and the sampling frequency of the luminance signal is 27 MHz.
The sampling frequency of the z and color difference signals is 13.5 MHz and is quantized by 10 bits.

The 8: 4: 4 signal is alternately divided for each line, and a main signal composed of one luminance signal and two color difference signals, and one luminance signal and two luminance signals so as to complement the main signal. There is a method of dividing the signal into sub-signals composed of two color difference signals and transmitting the divided signals. The main signal and the sub signal of this system have 525 scanning lines per frame.
There are five interlaced signals, that is, 4: 2: 2 signals. A 4: 2:
It is called a 2: 4: 2: 2 signal.

Further, before dividing the 8: 4: 4 signal into a main signal and a sub signal, the vertical frequency band of the color difference signal is limited by a line thinning vertical filter.
The signal is called an 8: 4: 4v signal. As a line thinning vertical filter, a three-tap 1: 2: 1 filter is being studied.

FIG. 6 shows the configuration of a line thinning vertical filter. In the figure, "2" and "1/4" indicate coefficients of the multiplier. The 8: 4: 4v signal obtained by thinning out the color difference signal by the line thinning vertical filter is transmitted as a 4: 2: 2: 4 signal not including the color difference signal in the sub signal. The 4: 2: 2: 4 signal is also called a 420p signal, and is hereinafter referred to as a 420p signal.

[0009] A standardized version of the 420p signal as a 360 MHz serial interface is the SMPT.
FIG. 7 shows a schematic diagram of E294M, which encodes a 420p signal. As shown in the figure, the active area of one horizontal line of the interlace is extended, and the main signal Ym and the sub-signal Ys of the luminance signal and the main signal Pb,
Pr is mapped to one horizontal line and transmitted. As a result, 2160 of 2288 samples in one horizontal line are obtained.
This means that the sample is used as an effective area.

FIG. 8 shows the correspondence between the 420p signal and the scanning lines on the TV screen. Although the luminance signal is always composed of 525 lines per frame for both odd and even frames, the color difference signal is always present only on the main signal side as shown in FIG. Are shifted by one line, and 525 per frame
/ 2 lines (that is, the same as the pixel position of the interlace signal).

[0011] 42 corresponding to the above SMPTE274M
Editing devices for 0p signals are not currently commercialized. In a conventional 420p signal editing apparatus, a 420p signal (4: 2: 2: 4 signal) is recorded on a VTR or the like, and a color difference signal on the sub side of the 420P signal of image data reproduced from the VTR or the like is subjected to an interpolation filter. Interpolation processing, two 4: 2: 2
The signal is input to a conventional interlace signal editing device, and the interlaced signal editing device
The signal is treated as a progressive signal composed of two interlaced signals, and editing and combining are performed.

FIG. 9 shows a 420p using a conventional editing device.
1 shows a system configuration diagram of a signal editing device. FIG. In the figure, reference numeral 41 denotes an input terminal of a 420p signal,
An interlace signal conversion circuit 43 converts the 0p signal into two interlace signals. Reference numeral 43 denotes a color difference signal interpolation circuit that creates a color difference signal on the sub-signal side from the color difference signal of the main signal output from the interlace signal conversion circuit 42. , 44 are interlace signal editing devices.
Is the output 2 from the interlace signal editing device 44.
A 420p signal conversion circuit for converting the interlaced signals of the system (that is, the main signal and the sub-signal) into a 420p signal, and 46 is an output terminal of the edited 420p signal.

The operation of the 420p signal editing apparatus configured as described above will be described below. The 420p signal input from the input terminal 41 is input to the interlace signal conversion circuit 42. The interlace signal conversion circuit 42 converts the 420p signal into two systems of interlace signals (ie, a main signal and a sub signal). still,
As shown in FIG. 8, the main signal is composed of a luminance signal and a color difference signal, while the sub signal is composed of only a luminance signal. Then, the main signal and the sub-signal output from the interlace conversion circuit 42 are input to a color difference signal interpolation circuit 43.

FIG. 10 is a block diagram of the color difference signal interpolation circuit 43. "-38", "294", "1 /
"512" indicates a coefficient of the multiplier. Color difference signal interpolation circuit 4
In 3, a color difference signal on the main signal side is input and passed through a digital filter to create a color difference signal of a sub signal. As described above, by interpolating the color difference signal on the sub signal side from the color difference signal on the main signal side, 420p
A 4: 2: 2: 4: 2: 2 signal is created from the signal and output as two interlaced signals. The two interlace signals generated by the color difference signal interpolation circuit 43 are input to an interlace signal editing device 44. The interlace signal editing device 44 performs processing and editing such as wipe using the main signal and the sub signal,
For example, the two screens are output as a wipe screen obtained by combining the right half and the left half. The two interlace signals synthesized by the interlace signal editing device 44 are input to a 420p signal conversion circuit 45, and output from an output terminal 46 as a 420p signal obtained by synthesizing the main signal and the sub signal.

[0015]

However, in the conventional editing apparatus, one image data A and another image data B are combined, and the right half of the screen is image data A and the left half is image data B. In the case of constructing new image data without moving the screen vertically, for example, image data A is image data of an even frame, image data B is image data of an odd frame, and Is output as image data of an even frame, the interpolated color difference signal on the sub signal side of the image data B is output as a color difference signal on the main signal side. There is a problem that the vertical band of the color difference signal is deteriorated.

Further, when a part of the image data B is moved by (2n + 1) lines in the vertical direction and combined with the image data A and output as image data of an even-numbered frame, both the image data A and the image data B are even-numbered. Even if it is frame image data, the interpolated color difference signal is mapped on the main side of the color difference signal of the image data B, and the original color difference signal is mapped on the sub signal side. When the interlaced signal is converted to a 420p signal, the original color difference signal existing on the sub signal side is lost, and only the interpolation signal is output as a 420p signal for the color difference signal. There is a problem that the band is deteriorated.

Therefore, the present invention converts a 420p signal into a 420p signal.
It is an object of the present invention to provide an editing apparatus which performs editing such as synthesis and movement without changing the signal format and does not cause image quality deterioration.

[0018]

In the image data editing apparatus according to the present invention, when the frame information read from the image data storage means coincides with each other, the image data is shifted in the vertical direction of the TV screen. The editing control means controls to move only 2n lines (n is 0 and a natural number) and to prohibit movement of 2n + 1 lines. According to the present invention, it is possible to prevent image quality from deteriorating when editing such as synthesis and movement is performed in the form of a 420p signal.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 of the present invention provides a method for processing image data of a 420p signal in which a luminance signal is sequentially scanned and a color difference signal is interlaced scanned.
Frame information detection means for detecting whether the frame of the image data is an odd frame or an even frame, and storage means for image data for storing the image data and the frame information detected by the frame information detection means Reading the frame information of the image data of at least one TV screen to be edited from the storage means of the image data, and if the frame information read out from the storage means of the image data are the same, the image data is read out. Editing control means for moving only 2n lines (n is 0 and a natural number) in the vertical direction of the TV screen and prohibiting movement of 2n + 1 lines, and at least one image of the TV data among the image data output from the image data storage means Image data processing means for processing data based on the editing control means. Ri, according to this, to be edited 42
If the frames of the 0p signal are both odd-numbered frames or both are even-numbered frames, the editing control means moves the image data to be edited in the vertical direction by only 2n lines.

According to a second aspect of the present invention, the luminance signal is sequentially scanned, and the color difference signal is interlaced scanned.
In processing the image data of the signal, the frame information detecting means for detecting whether the frame of the image data is an odd frame or an even frame, and storing the image data and the frame information detected by the frame information detecting means. The storage means for the image data to be stored and the frame information of the image data of a plurality of TV screens to be edited are read out from the storage means for the image data, and the frame information read out from the storage means for the image data is one. If not, edit control means for moving the image data by only 2n + 1 lines (n is 0 and a natural number) in the vertical direction of the TV screen and prohibiting movement of the 2n lines, and an image output from the image data storage means. Image data processing means for processing data based on the editing control means. If that, if the frame is an odd frame and an even frame of edited 420p signal, the editing control means, moving in the vertical direction of the image data to be edited is only 2n + 1 line.

According to a third aspect of the present invention, the luminance signal is sequentially scanned and the color difference signal is interlaced scanned by 420p.
In processing the image data of the signal, the frame information detecting means for detecting whether the frame of the image data is an odd frame or an even frame, and storing the image data and the frame information detected by the frame information detecting means. The frame information of the image data to be edited and the frame information of the image data of at least one TV screen to be edited are read out from the image data storage unit, and the frame information read out from the image data storage unit coincides. In this case, the image data is moved by 2n lines (n is 0 and a natural number) in the vertical direction of the TV screen and 2n + 1
If the movement of the line is prohibited and the frame information read from the storage means of the image data does not match, the image data is moved only 2n + 1 lines in the vertical direction of the TV screen and the movement of the 2n line is prohibited. Edit control means, and image data processing means for processing at least one TV screen image data of the image data output from the image data storage means based on the edit control means. According to the above, if the frames of the 420p signal to be edited are both odd frames or both even frames, the editing control means moves the image data to be edited in the vertical direction by only 2n lines. If the frame of the 420p signal to be edited is an odd frame and an even frame, the editing control means moves the image data to be edited in the vertical direction by 2n +.
There is only one line.

According to a fourth aspect of the present invention, the image data output from the image data processing means is set as a frame of the image data moved by 2n (n is 0 and a natural number) lines by the image data processing means. And a synchronizing signal adding means for adding a synchronizing signal corresponding to the output frame. According to this, the synchronizing signal is synchronized with the frame of the image data moved by 2n lines (n is 0 or a natural number). The synchronizing signal is added by the signal adding means and output.

According to a fifth aspect of the present invention, the luminance signal is sequentially scanned and the color difference signal is interlaced scanned by 420p.
A plurality of signal generating means for outputting image data of a signal; a two-frame synchronizing means for synchronizing two frames of the plurality of signal generating means; and a switching of image data for switching image data output from the plurality of signal generating means. According to this, since the image data output from the plurality of signal generating means is reproduced in synchronization with two frames, the image data to be wiped always becomes an even-numbered frame or both odd-numbered frames. Thus, the color difference signal of one screen does not deviate from the luminance signal by one horizontal line, and therefore, a new wiped screen without image quality deterioration can be configured.

According to a sixth aspect of the present invention, the luminance signal is sequentially scanned and the color difference signal is interlaced scanned by 420p.
A plurality of signal generating means for outputting image data of a signal; a two-frame synchronizing means for synchronizing two frames of the plurality of signal generating means; and an image data output from the at least one signal generating means on a TV screen. 2n vertically
(N is a natural number) delay means for delaying lines, and image data switching means for switching and processing image data output from the at least one signal generation means and image data output from the delay means. According to this, the image data output from the plurality of signal generating means is reproduced in two-frame synchronization, and the movement of the image data in the vertical direction of the TV screen is set to 2n (n is a natural number). In addition, the color difference signal of the moved portion does not deviate from the luminance signal by one horizontal line, and therefore, even when the subtitle or the like is moved on the screen, new image data without image quality degradation can be created.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG.
FIG. 2 is a block diagram showing a configuration of a signal image data editing device. In the figure, 1 is an input terminal of the 420p signal, 2 is frame information detecting means for detecting a frame of the 420p signal, and 3 is a circuit for detecting the input image data and the frame detected by the frame information detecting means 2. A storage means for storing image data, 4 is an editing control means for comparing a plurality of frames of image data to be edited and controlling the editing, and 5 is a means for moving and moving the image data based on the editing control means 4. Reference numeral 6 denotes a synchronizing signal adding unit that adds a synchronizing signal based on the editing control unit 4. Reference numeral 7 denotes an output terminal of the processed and edited 420p signal.

The operation of the 420p signal editing apparatus configured as described above will be described in detail. The 420p signal input from the input terminal 1 is input to the frame information detecting means 2 to detect whether the frame number of the input image data is odd or even. The frame information detected by the frame information detection means 2 and the image data input from the input terminal 1 are input to the image data storage means 3, where the image data and the frame information of the image data are stored. The frame information is information indicating whether the target image data is an even frame or an odd frame. When the image data to be edited is determined, the frame information of the image data is input to the editing control unit 4. The editing control means 4 controls the image data processing means 5 and the synchronization signal adding means 6 in accordance with the following various processing and editing contents in accordance with the frame information of the image data to be edited.

The control of the editing control means 4 is classified as follows. (1) When an object to be edited is moved within the same frame. (2) When the objects of different screens B are moved to the current screen A and output, and the frame information of the screens A and B is the same. (3) When frame objects of the screen A and the screen B are different when an object of a different screen B is moved to the current screen A and output. The operation of the editing control means 4 in the three types of processing and editing will be described below. As shown in (1) above, when an object to be edited is moved within the same frame, the object is moved only by 2n lines (n is 0 and a natural number) in the vertical direction of the screen. The movement of the (2n + 1) line is prohibited. In this case, the frame information output to the synchronization signal adding means 6 outputs the frame information of the screen to be edited. As shown in the above (2), when an object on a different screen B is moved to the current screen A and output, when the frame information of the screen A and the screen B is the same, the object on the screen B is displayed on the screen A. The vertical screen position to be inserted is the same as the line existing on screen B (that is, n = 0).
), Or inserted in a line 2n (n is a natural number) away from the line and prohibited from being inserted in a line 2n + 1 away. In this case, the synchronization signal adding means 6
The frame information of the output to be output to screen A or screen B
Either frame information may be used. As shown in the above (3),
In the case where a different screen B object is moved to the current screen A and output, when the frame information of the screen A and the screen B is different, the vertical screen position at which the screen B object is inserted into the screen A is It is inserted into a line 2n + 1 lines away from the line existing in B, and is prohibited from being inserted into a line 2n lines away. In this case, the output frame information output to the synchronization signal adding means 6 is the frame information of the current screen A.

The processing editing within one screen has been described above. However, when there are three or more screens, there is a current screen A serving as a reference. Since the screen C is inserted into the reference screen A, the above (2)
It is clear that the cases of (3) and (3) are included.

The image data processing means 5 processes and edits the image data by the operation of the editing control means 4 described above. That is, in the case of the above (1), data in the same frame is moved by 2n lines in the vertical direction.
The main signal component of the signal before editing is the main signal even after the line is moved, and the sub signal before editing is the sub signal even after the line is moved. Therefore, since the color difference signal on the main signal side is mapped as the main signal even after editing, it is possible to prevent deterioration of the vertical resolution of the color difference signal due to editing.

In the case of the above (2), editing of image data between a plurality of frames is performed, but all frame information (ie, information indicating whether the frame is an odd frame or an even frame) is included. If they match,
In this case, the structure of one frame including the main signal and the sub signal is the same (see FIG. 8). Therefore, as in the case of (1), the color difference signal on the main signal side is mapped as the main signal even after editing, so that the vertical resolution of the color difference signal due to editing can be prevented from deteriorating.

In the case (3), the image data is edited between a plurality of frames, and all pieces of frame information (information indicating whether the frame is an odd frame or an even frame) match. Absent. In this case, the structure of one frame including the main signal and the sub signal is different, and the main signal and the sub signal are mapped to the opposite scanning lines (see FIG. 8). Therefore, the screen used as the reference for output is set as the reference screen, and the image data of the screen whose frame information does not match the reference screen is moved by 2n + 1 lines. Is also a main signal, so that the sub-signal before editing becomes the sub-signal even after the line is moved. Therefore, since the color difference signal on the main signal side is mapped as the main signal even after editing, it is possible to prevent deterioration of the vertical resolution of the color difference signal due to editing.

As described above, the image data processing means 5
The image data processed and edited by the synchronizing signal adding means 6
According to the information of the output frame output from the editing control means 4, the synchronization signal of the even frame is output if the output frame is an even frame, and the synchronization signal of the odd frame is output if the output frame is an odd frame. In addition, the image data is output from the output terminal 7 as image data of the processed and edited 420p signal.

As described above, in the editing apparatus of the present invention, the color difference signal of the 420p signal is always composed of the main signal and the sub signal by the operation of the editing control means 4 shown in the above (1) to (3). Since the 4: 2: 2: 4 signal is mapped as the color difference signal of the main signal, it is possible to avoid the deterioration of the band of the color difference signal in the vertical direction due to the movement and synthesis of the screen.

In the image data editing apparatus according to the first embodiment, the input signal is a 420p signal. However, it goes without saying that the same effect can be obtained by inputting an 844 signal obtained by filtering a color difference signal. No.

(Embodiment 2) Embodiment 2 described below is applied to a system in which a plurality of playback devices such as VTRs are switched for each screen.

FIG. 2 is a block diagram showing the configuration of the second embodiment. In the figure, reference numeral 10 denotes one VTR, 11 denotes the other VTR, 12 denotes an input terminal of a reference signal of two frames for synchronizing two frames, and 13 denotes a terminal of one VTR 10 and the other VTR 11. Switching means for switching the output 420p signal,
Reference numeral 14 denotes an output terminal for the edited 420p signal.

The operation of the editing apparatus configured as described above will be described below. The reference signal input from the input terminal 12 includes the one VTR 10 and the other VTR 11
And the one VTR 10 and the other VT
At R11, the two signals are reproduced from the two VTRs 10 and 11 as two-frame 420p signals synchronized with two frames based on the reference signal. The switching means 13 switches the two systems of the 420p signal and the reference signal.
Is input to the terminal, and is processed and edited such as a wipe.
Output.

The VTRs 10 and 11 are an example of a plurality of signal generating means for outputting image data of a 420p signal and an example of a two-frame synchronizing means for synchronizing two frames. A two-frame reference signal is input, and two VTRs 10 and 11 are synchronously operated by the two-frame reference signal to control two VTRs 1 and 2.
Two frames of 0 and 11 are synchronized.

Next, the operation of the switching means 13 according to the second embodiment will be described in detail. FIG. 3 is a diagram showing the internal configuration of the switching means 13. Reference numeral 20 denotes an input terminal of a reference signal, and reference numeral 21 denotes a signal output from one of the VTRs 10.
20p signal input terminal, 22 is the other VTR11
23 is a switching timing generating means for generating a timing pulse for switching between the two 420p signals, and 24 is a switching timing generating means based on the switching timing generating means 23.
A switch for switching the 0p signal is provided, and 25 is an output terminal of the edited 420p signal.

Switching means 13 configured as described above
Will be described. The reference signal input from the input terminal 20 is input to the switching timing generator 23, for example, to determine the first half and the second half of one horizontal line.
An H pulse is generated. The 1 / 2H pulse and the 420p signal input from both input terminals 21 and 22 are input to a switch 24, and two systems of 420p signals are switched by the 1 / 2H pulse.
The output signal of TR10 and the left half of the screen are
Is output from the output terminal 25 as a wipe signal which is an output signal of

According to the second embodiment, two VTRs 1
Since 0 and 11 are reproduced in synchronization with two frames, the image data to be wiped are always even frames or both odd frames, and it is impossible to wipe even and odd frame image data.

Accordingly, it is possible to prevent the line in which the color difference signal exists from being shifted by one line between the odd frame and the even frame. Therefore, when the image data A of the even-numbered frame and the image data B of the odd-numbered frame are wiped and output as the image data of the even-numbered frame (A + B) as in the related art, the color difference signal on the B side is one line relative to the luminance signal It is possible to solve the problem that the image is shifted, thereby making it possible to configure a new screen that is wiped.

In the image data editing apparatus according to the second embodiment, the reproduction signal is a 420p signal, but the 844 signal obtained by filtering the color difference signal is used as the switching means 1.
Needless to say, the same effect can be obtained by inputting the value of "3".

Third Embodiment Next, a third embodiment of the present invention will be described. The third embodiment has a plurality of VTRs.
Etc. are applied to a system for switching the playback device for each screen.

FIG. 4 is a block diagram showing a configuration of the third embodiment. In the figure, reference numeral 10 denotes one VTR, 11 denotes the other VTR, 12 denotes an input terminal of a two-frame reference signal for synchronizing two frames, and 30 denotes a delay circuit (an example of delay means). And delays 2n (n is a natural number) lines in the vertical direction of the TV screen. Reference numeral 13 denotes one VTR 10 and the delay circuit 3
Switching means for switching the output 420p signal of 0 is provided, and 14 is an output terminal of the edited 420p signal.

The operation of the editing apparatus configured as described above will be described below. The reference signal input from the input terminal 12 includes the one VTR 10 and the other VTR 11
And the one VTR 10 and the other VT
At R11, the two signals are reproduced from the two VTRs 10 and 11 as two-frame 420p signals synchronized with two frames based on the reference signal. further,
The 420p signal reproduced from the other VTR 11 is input to the delay circuit 30 and is delayed by 2n lines in the vertical direction of the TV screen. 42 output from the delay circuit 30
0p signal and 420 output from the one VTR 10
The p signal and the reference signal are input to the switching means 13, processed and edited such as insertion of subtitles, and output from the output terminal 14.

The operation of the switching means 13 is as follows.
The description is omitted because it is the same as the switching means 13 in the second embodiment described above. The third embodiment is effective when subtitles and the like are reproduced from the other VTR 11 and inserted into image data reproduced from one VTR 10. That is, in the case of editing such as insertion of subtitles, vertical movement of subtitles or the like is indispensable depending on the content of the TV screen. According to the third embodiment, two VTRs 10 and 11
Are reproduced in synchronization with two frames, the image data to be synthesized on the screen are always even frames or both odd frames, and the movement of the image data is always performed in units of 2n lines.

As described above, by moving the image data in the vertical direction of the TV screen by 2n (n is a natural number),
It is possible to prevent the line where the color difference signal exists from being shifted by one line between the odd frame and the even frame.
For this reason, when the image data is moved in the vertical direction by (2n + 1) lines as in the related art, the color difference signal of the moved image data is lost unless the color difference signal of the moved image data is created by interpolating from the surrounding color difference signals. Thus, it is possible to create new image data in which subtitles and the like are inserted.

In the image data editing apparatus according to the third embodiment, the reproduced signal is a 420p signal, but the same effect can be obtained by reproducing an 844 signal obtained by filtering a color difference signal. Not even.

[0050]

As described above, according to the first aspect of the present invention, if the frames of the 420p signal to be edited are both odd frames or both even frames, the editing control means controls Of the image data in the vertical direction is only 2n lines.
The color difference signal of the signal is mapped as the color difference signal of the main signal of the 4: 2: 2: 4 signal composed of the main signal and the sub-signal, and the band of the color difference signal in the vertical direction accompanying the movement and the synthesis of the screen. Can be avoided.

According to the second aspect of the present invention, if the frame of the 420p signal to be edited is an odd frame or an even frame, the editing control means moves the image data to be edited in the vertical direction by only 2n + 1 lines. To become
The color difference signal of the 420p signal is mapped as a color difference signal of the main signal of the 4: 2: 2: 4 signal composed of the main signal and the sub-signal, and the color difference signal in the vertical direction accompanying the movement and synthesis of the screen. It is possible to avoid band degradation.

According to the third aspect of the present invention, when the frames of the 420p signal to be edited are both odd frames or both even frames, the vertical movement of the image data to be edited is only 2n lines, and Are the odd-numbered frames and the even-numbered frames, the vertical movement of the image data to be edited is only 2n + 1 lines, so the color difference signal of the 420p signal is composed of the main signal and the sub signal 4: 2: The mapping is performed as the color difference signal of the 2: 4 main signal, and it is possible to avoid the deterioration of the band of the color difference signal in the vertical direction due to the movement and the synthesis of the screen.

According to the fifth aspect of the present invention, since the image data output from the plurality of signal generating means is reproduced in synchronization with two frames, the image data to be wiped is always an even-numbered frame or both of the odd-numbered frames. The color difference signal of one screen does not deviate from the luminance signal by one horizontal line, so that a new wiped screen without image quality degradation can be configured.

According to the sixth aspect of the present invention, the image data output from the plurality of signal generating means is reproduced in synchronization with two frames, and the movement of the image data in the vertical direction of the TV screen is controlled by two.
By setting n (n is a natural number), the color difference signal of the moved portion does not deviate from the luminance signal by one horizontal line. Therefore, even if the subtitles are moved on the screen, new image data without image quality degradation is transferred. It is possible to create.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an image data editing device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an image data editing device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a switching unit of the image data editing device.

FIG. 4 is a block diagram illustrating a configuration of an image data editing device according to a third embodiment of the present invention.

FIG. 5 is a schematic diagram showing a difference between a conventional interlaced signal and a progressive signal of the EDTV2 system or the like.

FIG. 6 is a configuration diagram of a line thinning filter used in a conventional EDTV2 system or the like.

FIG. 7 shows 420p used in the conventional EDTV2 system and the like.
It is a schematic diagram which shows the transmission system of a signal.

FIG. 8 shows 420p used in the conventional EDTV2 system and the like.
FIG. 3 is a diagram illustrating correspondence between signals and scanning lines on a TV screen.

FIG. 9 is a block diagram showing a configuration of a conventional 420p signal editing apparatus.

FIG. 10 is a configuration diagram of a color difference signal interpolation circuit of a conventional editing device.

[Explanation of symbols]

2 Frame information detecting means 3 Image data storing means 4 Editing control means 5 Image data processing means 6 Synchronous signal adding means 10, 11 VTR (Signal generating means, 2 frame synchronizing means) 13 Switching means 30 Delay circuit (Delay means)

Claims (6)

[Claims] 1. A frame information detecting means for detecting whether an image data frame is an odd frame or an even frame in processing of image data of a 420p signal in which a luminance signal is sequentially scanned and a color difference signal is interlaced scanned. An image data storage unit for storing image data and frame information detected by the frame information detection unit; and a frame information of at least one TV screen image data to be edited from the image data storage unit. If the frame information read out from the image data storage means coincide with each other, the image data is
2n lines in the vertical direction of the V screen (n is 0 and a natural number)
Editing control means for moving only the image data and prohibiting movement of 2n + 1 lines, and processing of image data for processing at least one TV screen image data among the image data output from the image data storage means based on the editing control means. Means for editing image data. 2. A frame information detecting means for detecting whether an image data frame is an odd frame or an even frame in the processing of image data of a 420p signal in which a luminance signal is sequentially scanned and a color difference signal is interlaced scanned. Storage means for storing image data and the frame information detected by the frame information detection means, and storage means for storing the frame information of the image data of a plurality of TV screens to be edited in the image data If the frame information read from the image data storage unit does not match, the image data is read from the TV.
Edit control means for moving only 2n + 1 lines (n is 0 and a natural number) in the vertical direction of the screen and prohibiting movement of 2n lines, and processing image data output from the image data storage means based on the edit control means And an image data processing unit. 3. A frame information detecting means for detecting whether an image data frame is an odd frame or an even frame in the processing of image data of a 420p signal in which a luminance signal is sequentially scanned and a color difference signal is interlaced scanned. An image data storage unit for storing image data and frame information detected by the frame information detection unit; and a frame information of at least one TV screen image data to be edited from the image data storage unit. If the frame information read out from the image data storage means coincide with each other, the image data is
2n lines in the vertical direction of the V screen (n is 0 and a natural number)
Only, and prohibits the movement of 2n + 1 line,
If both pieces of frame information read from the image data storage means do not match, the image data is moved by 2n + 1 lines in the vertical direction of the TV screen and 2n + 1
Editing control means for prohibiting movement of a line; and image data processing means for processing image data of at least one TV screen out of the image data output from the image data storage means based on the editing control means. An image data editing apparatus characterized in that the image data is edited. 4. An image data output from the image data processing means, wherein a frame of the image data moved by 2n (n is 0 and a natural number) lines by the image data processing means corresponds to the output frame. 4. The image data editing apparatus according to claim 1, further comprising a synchronization signal adding unit that adds a synchronization signal to be edited. 5. A plurality of signal generating means for outputting image data of a 420p signal in which a luminance signal is sequentially scanned and a color difference signal is interlaced scanned, and a two-frame synchronizing means for synchronizing the plurality of signal generating means with two frames. And an image data switching unit for switching image data output from the plurality of signal generation units. 6. A plurality of signal generating means for outputting image data of a 420p signal in which a luminance signal is sequentially scanned and a chrominance signal is interlaced scanned, and a two-frame synchronizing means for synchronizing the plurality of signal generating means with two frames. Delay means for delaying the image data output from the at least one signal generating means by 2n (n is a natural number) lines in the vertical direction of the TV screen; and image data output from the at least one signal generating means. An image data switching device for switching and processing the image data output from the delay unit.