JPH10136315A - Video data processing unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the video data processing unit in which image data processing video data are inserted and outputted in the unit of fields and a frame frequency of image data output is converted. SOLUTION: The processing unit is made up of an output frame frequency information detection means 101 that detects frame frequency information at output of image data from video data, a field insert timing instruction means 102 that instructs an insert timing of a new field based on an output frame frequency instruction signal to instruct a frame frequency to be converted and desired to be outputted and on the output frame frequency information and a data processing output means 103 that provides an output of field image data or image data inserted newly by processing the video data so as not to cause deviation in the field sequence in the image data according to the field insert instruction signal so as to avoid unnaturality due to field number conversion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a video data processing apparatus for performing frame frequency conversion of image data output.

[0002]

2. Description of the Related Art Conventionally, when a video signal is projected on a television monitor, various frame frequencies such as 25 Hz, 29.97 Hz and 30 Hz are used. Also, movie films and the like are photographed at 24 Hz. For this reason, compression-encoded video data that handles information such as video for television broadcasts and movie films has various frame frequencies.

An output time is added to video data for each image to be output. Hereinafter, in the present invention, the output time,
ITU-T Recommendation H. 222.0 or ISO / IEC
The presentation time stamp (hereinafter abbreviated as PTS) will be learned from the expression used in 13818-1. In order to know whether the value of the PTS has been reached, a reference clock is required. This timepiece is often realized by a digital counter in the device. Less than,
In the present invention, this watch is referred to as ITU-T Recommendation H.264. 222.0
Or, following the expression used in ISO / IEC 13818-1, it is called a system time clock (hereinafter abbreviated as STC).

[0004] Then, according to the time of the STC, data processing is performed with reference to the value of the PTS added to the video data, and the processed image data is output. The value of the PTS is added so that image data can be output at a frame frequency at which the image data is desired to be output. However, there are cases where video data created with the intention of outputting image data at a certain frame frequency is desired to be converted to a different frame frequency and output.

Hereinafter, conventional frame frequency conversion will be described with reference to the drawings. FIG. 2 is a diagram showing a first example of a conventional frame frequency conversion using synchronization. FIG. 3 is a diagram showing a second example of conventional frame frequency conversion using synchronization. For example, as shown in FIG.
Video data with a frame frequency of 24 Hz is
In some cases, image data of 5 Hz is processed and output.
Conventionally, in this case, 24 Hz video data is processed into 24 Hz image data, and 24 Hz is output as 25 Hz.
Is eliminated by synchronization (AV synchronization, that is, synchronization of audio and video).

Further, as shown in FIG.
In some cases, 4 Hz video data is processed and output to 29.97 Hz image data of the NTSC system. Conventionally, in this case, a 2: 3 pull-down is first performed to process 24 Hz video data into 30 Hz image data. 2:
In the 3 pulldown, as in the second frame, a field image output at the beginning of an image of a certain frame (consisting of two fields of a top field and a bottom field) is repeatedly output after the output of the one frame. A process of creating a three-field image from a two-field image is performed. The image data of 24 Hz is converted into image data of 30 Hz by increasing one field every other frame. On the way, there are frames, such as the third frame, in which the output order of the top field and the bottom field is exchanged in order to eliminate the deviation of the field order. 2: 3 by pulldown
After converting the frame frequency to 0 Hz, a time error generated between 30 Hz and 29.97 Hz output is eliminated by synchronization (AV synchronization).

However, the frame frequency conversion by the 2: 3 pull-down is performed only when video data of a frame in which there is no time difference between two fields in one frame is processed. Hereinafter, in the present invention, this frame is referred to as ITU-T Recommendation H.264. 222.0 or ISO
The expression used in / IEC 13818-1 will be referred to as a progressive frame.

[0008]

However, in the conventional method using synchronization when converting the frame frequency, image data is repeated or deleted in units of one frame. For example, in the case of conversion to the PAL system of FIG. 2, the same image data of one frame is repeatedly output every 25 frames. In the case of conversion to the NTSC system shown in FIG. 3, one frame image data is deleted for about 1000 frames counted at 30 Hz.

For this reason, when an image is projected on a television monitor and viewed, there is a problem that movement for one frame stops for a moment or jumps and looks awkward. If the movement stops for a moment or jumps and looks awkward, it should be less awkward between one field. Therefore, when performing the frame frequency conversion, the video data processing apparatus that performs the frame frequency conversion of the image data output includes the image data obtained by processing the video data by one.
It is required that data can be inserted and output in units of one field, which is a unit shorter than a frame.

It is an object of the present invention to provide a video data processing apparatus for performing frame frequency conversion of image data output by inserting and outputting image data obtained by processing video data in field units.

[0011]

SUMMARY OF THE INVENTION The present invention relates to a video data processing apparatus for processing input video data and outputting image data, wherein an output for detecting frame frequency information when outputting image data from the video data. Frame frequency information detecting means, an output frame frequency indicating signal indicating a frame frequency to be converted and output, and output frame frequency information detected by the output frame frequency information detecting means, a timing for inserting a new field. Field insertion timing instructing means for instructing
According to the field insertion instruction signal output from the field insertion timing instruction means, in order to prevent the reverse of the time order and the deviation of the field order from occurring in the image data,
Creates and outputs the field image data to be newly inserted by processing the video data, and processes the video data so that the time order is not reversed or the field order is not shifted in the image data. Is output by data processing output means.

In a video data processing apparatus for processing input video data and outputting image data, an output frame frequency information detecting means for detecting frame frequency information for outputting image data from the video data, Detect frame structure information of data from video data,
When it is detected that the frame structure has no temporal difference between two fields in one frame, a frame structure information detecting means for outputting a progressive frame detection signal, and a progressive frame detection signal from the frame structure information detecting means. When input, an output frame frequency indicating signal indicating a frame frequency to be converted and output and an output frame frequency information detected by the output frame frequency information detecting means indicate a timing for inserting a new field. By processing the video data in accordance with the field insertion timing instructing means and the field insertion instruction signal output from the field insertion timing instructing means so that the time order is not reversed or the field order is not shifted in the image data. New field to insert It is composed of data processing output means for processing video data and outputting image data so as to create and output image data, and to prevent time order inversion and field order deviation from occurring in the image data. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to a first aspect of the present invention, there is provided a video data processing apparatus for processing input video data and outputting image data, wherein frame frequency information for outputting image data is stored in a video data processing apparatus. Based on output frame frequency information detecting means for detecting from video data, an output frame frequency indicating signal indicating a frame frequency to be converted and output, and output frame frequency information detected by the output frame frequency information detecting means, In accordance with a field insertion timing instructing means for instructing a new field insertion timing and a field insertion instruction signal output from the field insertion timing instructing means, the image data is prevented from being reversed in time order or shifted in field order. , A new field to be inserted by processing video data And it outputs the created image data,
In addition, the image processing device is configured with a data processing output unit that processes video data and outputs image data so that the time order is not reversed or the field order is not shifted in the image data. Therefore, it has an effect that it is possible to insert the image data on a field basis and to convert the frame frequency for outputting the image data.

According to an eleventh aspect of the present invention, in a video data processing apparatus for processing input video data and outputting image data, frame frequency information for outputting the image data is detected from the video data. Output frame frequency information detecting means for detecting frame structure information of the video data from the video data, and detecting a frame structure having no time difference between two fields in one frame. A frame structure information detection means for outputting a signal, an output frame frequency indication signal for indicating a frame frequency to be converted and output when a progressive frame detection signal is input from the frame structure information detection means, and an output frame frequency information Based on the output frame frequency information detected by the detection means, a new In accordance with a field insertion timing instructing means for instructing a field insertion timing, and a field insertion instruction signal output from the field insertion timing instructing means, the image data is displayed so that the time order is not reversed and the field order is not shifted. Creates and outputs the field image data to be newly inserted by processing the data, and processes the video data so that the image data does not reverse the time order or shift the field order. It comprises data processing output means for outputting. Therefore, when the frame structure of the video data is a progressive frame structure, the image data is inserted in units of fields and the frame frequency at which the image data is output is converted with a simpler configuration than in the case of performing the interpolation processing. It has the effect of making it possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. According to the present invention, by inserting and outputting image data obtained by processing video data in units of fields, data is increased by one field and frame frequency conversion of image data output is performed. The processing of the field image data to be inserted differs depending on the type of the image data. The frame structure and how it is processed will be described with reference to the drawings.

FIG. 4 is a diagram showing insertion of field image data in the case of a frame structure in which a temporal difference exists between two fields in one frame. Hereinafter, in the present invention, this frame is referred to as an interlaced frame. In FIG. 4, the object on the image moves to the right with time. The top field of the first frame is field 1, the bottom field is field 2, the top field of the second frame is field 3, and the bottom field is field 4.

It is assumed that field 1 is inserted between the first frame and the second frame and repeated as shown in FIG. In the case of the interlaced frame structure, since there is a temporal difference between the two fields, the field 2 and the repeated field 1 are temporally reversed. Therefore, a method of repeating the first output field after outputting one frame cannot be used.

In order to increase the number of newly inserted data fields by inserting them, for example, as shown in FIG. 4B, a method of temporally interpolating and inserting field data from fields 1 and 3 is used. is there. As shown in FIG. 4C, there is a method of creating and inserting data of the top field by interpolating the field 2 in the vertical direction. In this way, there is no time difference between field 2 and the insertion field. Therefore, the motion appears to stop for one field. However, since the interpolation processing is performed within one field, there is an advantage that the processing is simplified as compared with the case where the interpolation processing is performed from two fields in FIG.

However, no matter which method is used, the insertion field and the next output field 3 are the same top field, so that the field order is shifted. Therefore,
Even in the output after the field 3, interpolation must be performed spatially or temporally to create field data. FIG. 5 is a diagram showing insertion of field image data in the case of a progressive frame structure in which there is no temporal difference between two fields in one frame. In FIG. 5, the object on the image moves to the right with time. And the top field of the first frame is field 1,
The bottom field is field 2, the top field of the second frame is field 3, and the bottom field is field 4.

Assume that field 1 is repeatedly inserted between the first and second frames as shown in FIG. 5 in order to increase one field. In the case of the progressive frame structure, since there is no temporal difference between the two fields, the field 2 and the repeated field 1 are temporally the same. Therefore, the first output field can be repeated after outputting one frame. However, the movement appears to stop for one field.

Since the insertion field and the next output field 3 are the same top field, the field order is shifted. However, since there is no time difference between the field 3 and the field 4, the order of the fields can be eliminated by changing the order. Further, as shown in FIGS. 4B and 4C, it is also possible to create and insert field data by performing spatial or temporal interpolation. However, when interpolation is performed, the number of processes increases. Therefore, the method of repeating the first output field after outputting one frame has an advantage that special processing such as interpolation is not required.

FIG. 1 is a block diagram showing a video data processing apparatus according to the first embodiment of the present invention. In FIG. 1, reference numeral 101 denotes output frame frequency information detecting means for detecting frame frequency information for outputting image data from video data. Reference numeral 102 denotes a field insertion timing instructing unit for instructing a new field insertion timing based on the output frame frequency instruction signal and the output frame frequency information detected from the video data by the output frame frequency information detecting unit 101. 103 is a field insertion timing instructing means 10
2 is a data processing output means for processing input video data and outputting image data in accordance with a field insertion instruction signal output from 2.

The operation of the present embodiment configured as described above will be described. For the sake of explanation, it is assumed that the input video data is compression-encoded data decoded by the data processing output unit 103. The input video data includes information on the frame frequency at which the processed image data is output. The output frame frequency information detecting means 101 detects information on the output frame frequency from the video data, and after the video data is processed into image data, determines at what frame frequency the video data should be output at the field insertion timing. The information is transmitted to the instruction means 102.

Further, a data processing output time (hereinafter, referred to as PTS) is added to the video data for each output image data unit. In the apparatus, there is a reference clock (hereinafter referred to as STC), and when frame frequency conversion is not normally performed, when the value of STC matches the value of PTS or becomes larger than the value of PTS. When
It outputs image data processed from video data.
If the output is based on the value of the PTS, the output can be performed at the frame frequency described in the video data.

However, there are cases where it is desired to output at a frame frequency different from the frame frequency described in the video data. Information about the frame frequency to be output is input to the field insertion timing instruction means 102 by an output frame frequency instruction signal. First, the field insertion timing instructing means 102 obtains the period of two frame frequencies from information on an output frame frequency detected from video data input from the output frame frequency information detecting means 101 and information on a frame frequency to be output. Find the difference. Further, the timing for outputting the image data in units of fields is obtained from the cycle of the frame frequency to be output.

Each time the image data is output on a field basis, the difference between the periods is added. As long as the sum of the differences does not exceed the period of the output frame frequency detected from the video data, the data processing output unit 103 is instructed to sequentially process the input video data. However, when the sum of the differences exceeds the period of the output frame frequency detected from the video data, an instruction is given to perform field insertion. At the same time, the period of the output frame frequency detected from the video data is subtracted from the sum of the differences. The calculation using this difference is repeated, and the insertion of the field is continuously performed to convert the frame frequency.

The data processing output means 103 creates and outputs image data by interpolation processing according to the instruction of the field insertion instruction signal input from the field insertion timing instruction means 102, or repeatedly outputs image data to perform field insertion. Do the processing. Also, it sequentially decodes input video data without following the PTS and outputs image data.

At the same time, processing such as interpolation is performed on the input video data so that the image data can be output without any inconvenience without inversion of the time order or displacement of the field order due to the insertion of the field. . If the frame structure of the video data is an interlaced frame structure, interpolation processing is performed. If the frame structure is a progressive frame structure, interpolation processing is performed or the field order within one frame is exchanged.

The frame frequency conversion according to the present invention will be described with reference to the drawings. FIG. 6 is a diagram showing a first example of frame frequency conversion by field insertion in the present invention. FIG. 7 is a diagram showing a second example of the frame frequency conversion by the field insertion according to the present invention. FIG. 6 shows a case in which video data having a frame frequency of 24 Hz is processed and output to 25 Hz image data of the PAL system. For simplicity, the cycle of the frame frequency 24 Hz is set to 2
5, if the period of the frame frequency 25 Hz is 24, the difference between the periods is 1. If the difference is added each time the image data is output in units of fields, the sum of the differences does not exceed the period 25 of the output frame frequency 24 Hz detected from the video data from the first frame to the twelfth frame. Process on image data.

In the top field of the 13 frames, since the sum of the differences exceeds 25, field insertion is performed, and 25 is subtracted from the sum of the differences. Similarly, in the bottom field of the 25th frame, since the sum of the differences exceeds 25, field insertion is performed, and 25 is subtracted from the sum of the differences.
When field insertion is performed in accordance with the value of the sum of differences in this way, the number of frames increases by one every 25 frames.

Therefore, by calculating the difference between the output frame frequency detected from the video data and the cycle of the frame frequency to be output, image data is inserted in units of fields, and the output frame frequency can be converted from 24 Hz to 25 Hz. it can. FIG. 7 shows a case where video data having a frame frequency of 24 Hz is processed into image data of 29.97 Hz in the NTSC system and output. For simplicity, if the period of the frame frequency of 24 Hz is 2997 and the period of the frame frequency of 29.97 Hz is 2400, the difference between the periods is 597. When the difference is added each time the image data is output in units of fields, the sum of the differences does not exceed the period 2997 of the output frame frequency of 24 Hz detected from the video data from the first frame to the second frame. Process on image data.

In the bottom field of the third frame, since the sum of the differences exceeds 2997, field insertion is performed.
2997 is subtracted from the sum of the differences. Similarly, in the top field of the sixth frame, the bottom field of the eighth frame, the bottom field of the 123 frame, and the bottom field of the 126 frame, the sum of the differences is 2997.
, The field is inserted, and 2 is calculated from the sum of the differences.
997 is subtracted.

In most cases, field insertion is performed regularly every five fields. However, field insertion may be performed in the sixth field from the 123rd frame to the 126th frame. When the field insertion is performed according to the value of the sum of the differences in this manner, 597 frames are added every 2997 frames. Therefore, by calculating the difference between the output frame frequency detected from the video data and the cycle of the frame frequency to be output, image data is inserted in units of fields, and the output frame frequency is set to 24 Hz.
To 29.97 Hz.

Therefore, by inserting the image data on a field basis and converting the frame frequency for outputting the image data, when the image is projected and viewed on a television monitor,
It is possible to suppress a momentary stop of movement within one field, and to reduce awkwardness. The conversion of the frame frequency is not limited to 24 Hz to 25 Hz or 29.97 Hz. Any frequency conversion may be used if the frequency is increased.

The input video data is not limited to compression-encoded data. Further, the method of calculating the insertion timing of a new field is not limited to the method of calculating the difference between the output frame frequency detected from the video data and the cycle of the frame frequency to be output. What is necessary is just to obtain | require from two frame frequency information.

Further, the method of creating the field image data to be inserted in the data processing output means 103 is not limited to the method described in the present embodiment. It is sufficient that the image data can be output without any inconvenience without inversion of the time order or deviation of the field order. Furthermore, the data processing output unit 103 processes the input video data so that the time is not reversed or the field order is not shifted in the image data due to the insertion of the field, and the data can be output without any inconvenience. , But the interpolation is not always performed.

Furthermore, in this embodiment, the field insertion timing instructing means 102 determines the timing of outputting image data in units of fields from the cycle of the frame frequency to be output. A timing signal for outputting image data in units of fields may be created and output to the field insertion timing instructing means 102.

FIG. 8 is a block diagram showing a video data processing apparatus according to the second embodiment of the present invention. In FIG. 8, reference numeral 801 denotes output frame frequency information detecting means for detecting frame frequency information for outputting image data from video data. Reference numeral 802 denotes frame structure information detecting means for detecting frame structure information of video data. When the frame structure information detecting unit 802 detects that the frame structure of the video data to be processed is a progressive frame, the output frame frequency instruction signal and the output frame frequency information detecting unit 801 detect the frame data from the video data. Field insertion timing instructing means for instructing the insertion timing of a new field based on the output frame frequency information. 804 is a field insertion timing instructing means 80
3 is a data processing output unit that processes input video data and outputs image data in accordance with a field insertion instruction signal output from 3.

The operation of the present embodiment configured as described above will be described. For the sake of explanation, it is assumed that the input video data is compression-encoded data decoded by the data processing output unit 804. The input video data includes information on the frame frequency at which the processed image data is output. The output frame frequency information detecting means 801 detects information about the output frame frequency from the video data, and after the video data is processed into image data, determines at what frame frequency the video data should be output at the field insertion timing. It is transmitted to the instruction means 803.

The frame structure information detecting means 802 detects the frame structure information of the video data to be processed from the video data, and when it is detected that the frame is a progressive frame, the field insertion timing instructing means 803.
, A progressive frame detection signal is output. Information on the frame frequency to be output is input to the field insertion timing instructing means 803 by an output frame frequency instruction signal. First, when a progressive frame detection signal is input from the frame structure information detecting means 802, the field insertion timing instructing means 803 includes information on an output frame frequency detected from video data input from the output frame frequency information detecting means 801; The difference between the periods of the two frame frequencies is obtained from the information on the frame frequency to be output. Also, from the period of the frame frequency that you want to output,
The timing for outputting image data in units of fields is obtained.

Each time the image data is output on a field basis, the difference is added. As long as the sum of the differences does not exceed the period of the output frame frequency detected from the video data, the data processing output unit 804 is instructed to sequentially process the input video data. However, if the sum of the differences exceeds the period of the output frame frequency detected from the video data, an instruction is issued to insert a field.
At the same time, the period of the output frame frequency detected from the video data is subtracted from the sum of the differences. The calculation using this difference is repeated, and the insertion of the field is continuously performed to convert the frame frequency.

However, the field insertion is performed by a method of repeatedly outputting the first output field in the progressive frame after outputting one frame. Therefore, if the position where the field is inserted is not a position where the first output field can be repeated after one frame is output,
Shift the field insertion position back and forth by one field. The data processing output unit 804 repeatedly outputs image data and performs field insertion processing according to the instruction of the field insertion instruction signal input from the field insertion timing instruction unit 803, or sequentially converts input video data without following the PTS. The decoding processing is performed, and the image data is output.

At the same time, the field order of the output image data is exchanged within one frame so that the time insertion and the field order are not reversed in the image data due to the insertion of the fields, and the output can be performed without any inconvenience. . The frame frequency conversion in the present invention is the same as in the first embodiment.

Therefore, by inserting the image data in field units and converting the frame frequency for outputting the image data, when the image is projected on the television monitor, the momentary stop of the movement is suppressed to one field. Awkwardness can be reduced. Since the data processing output unit 804 does not perform the interpolation processing, the configuration can be simplified as compared with the case where the interpolation processing is performed.

The conversion of the frame frequency is 24 Hz
To 25 Hz or 29.97 Hz. Any frequency conversion may be used if the frequency is increased. Further, the input video data is not limited to the data that has been compression-encoded. Furthermore, the method of obtaining the insertion timing of a new field is not limited to the method of calculating the difference between the cycle of the output frame frequency detected from the video data and the cycle of the frame frequency to be output. What is necessary is just to obtain | require from two frame frequency information.

Further, in the present embodiment, the timing for outputting image data in units of fields is determined by the field insertion timing instructing means 803 from the cycle of the frame frequency to be output. A timing signal for outputting image data in units of fields may be created and output to the field insertion timing instructing unit 803.

[0047]

As described above, according to the present invention, the image data is inserted on a field basis and the frame frequency for outputting the image data is converted, so that when the image is projected and viewed on a television monitor, Is stopped within one field, and the awkwardness can be reduced.

Further, when the input video data is detected to be a progressive frame having no temporal difference between two fields in one frame, the processed field image data is provided. Is repeatedly output to insert fields. And by inserting the field,
In order to allow the image data to be output without any inconvenience without inversion of the time order or deviation of the field order, a process of changing the field order of the output image data within one frame is also performed, and the image data is sequentially processed. Output. Therefore, an advantageous effect is obtained in that it is possible to simplify the configuration as compared with the case where the interpolation processing is performed without performing the interpolation processing.

[Brief description of the drawings]

FIG. 1 is a block diagram of a video data processing device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a first example of conventional frame frequency conversion using synchronization.

FIG. 3 is a diagram showing a second example of a conventional frame frequency conversion using synchronization.

FIG. 4 is a diagram showing insertion of field image data in a frame structure in which a temporal difference exists between two fields in one frame.

FIG. 5 is a diagram showing field image data insertion in a frame structure in which there is no temporal difference between two fields in one frame.

FIG. 6 is a diagram showing a first example of frame frequency conversion by field insertion in the present invention.

FIG. 7 is a diagram showing a second example of the conversion of the frame frequency by the field insertion in the present invention.

FIG. 8 is a block diagram of a video data processing device according to a second embodiment of the present invention.

[Explanation of symbols]

 101 output frame frequency information detecting means 102 field insertion timing instructing means 103 data processing output means 801 output frame frequency information detecting means 802 frame structure information detecting means 803 field insertion timing instructing means 804 data processing output means

Claims (16)

[Claims] 1. A video data processing apparatus for processing input video data and outputting image data, wherein output frame frequency information detecting means for detecting frame frequency information for outputting the image data from the video data. ,
Field insertion for indicating a new field insertion timing based on an output frame frequency indication signal for indicating a frame frequency to be converted and output, and the output frame frequency information detected by the output frame frequency information detection means. A timing instructing unit, and processing the video data according to a field insertion instruction signal output from the field insertion timing instructing unit so that the image data does not reverse in time order or shift in field order. Data for generating and outputting field image data to be newly inserted, and for processing the video data and outputting the image data so that time order inversion and field order shift do not occur in the image data. The image comprising processing output means. Video data processing apparatus for performing frame frequency conversion over data output. 2. The video data processing apparatus according to claim 1, wherein the input video data is compression-encoded data. 3. A method for obtaining insertion timing of a new field by a field insertion timing instructing means,
2. The method according to claim 1, wherein the difference is obtained by calculating a difference between an output frame frequency obtained from output frame frequency information detected from the video data and a cycle of a frame frequency desired to be converted and output obtained from the output frame frequency instruction signal. The video data processing device as described in the above. 4. Field image data to be newly inserted,
2. The video data processing apparatus according to claim 1, wherein the video data is created by interpolating temporally or spatially from video data of two fields having different sampled times. 5. Field image data to be newly inserted,
2. The video data processing device according to claim 1, wherein the video data is created by spatially interpolating from video data of one field. 6. The video data processing apparatus according to claim 1, wherein image data of one field is repeatedly output to obtain newly inserted field image data. 7. In order to prevent the output image data from inverting in time order or shifting in field order, video data of two fields sampled at different times are temporally and / or spatially separated. 2. The video data processing apparatus according to claim 1, wherein the image data is output after performing interpolation processing. 8. A method for spatially interpolating video data of one field and outputting the image data so as to prevent the output image data from being reversed in time order or from being out of sequence in a field order. 2. The video data processing device according to claim 1, wherein: 9. The image data is output by replacing the field order in one frame so that the output image data does not reverse the time order or shift the field order. 2. The video data processing device according to 1. 10. The video data processing apparatus according to claim 1, wherein the data processing output means generates a timing signal for outputting the image data in field units and outputs the generated signal to the field insertion timing instruction means. 11. A video data processing device for processing input video data and outputting image data, comprising: output frame frequency information detecting means for detecting frame frequency information for outputting the image data from the video data. Detecting a frame structure information of the video data from the video data, and outputting a progressive frame detection signal when detecting that the frame structure has no time difference between two fields in one frame. Information detecting means, when the progressive frame detection signal is input from the frame structure information detecting means, an output frame frequency indicating signal indicating a frame frequency to be converted and output, and an output frame frequency information detecting means. Based on the detected output frame frequency information, a new According to a field insertion timing instructing means for instructing a field insertion timing, and in accordance with a field insertion instruction signal output from the field insertion timing instructing means, the image data is prevented from being reversed in time order or shifted in field order. Generating and outputting field image data to be newly inserted by processing the video data, and processing the video data so that the time order is not reversed or the field order is not shifted in the image data. A video data processing device for performing a frame frequency conversion of the image data output, comprising a data processing output means for outputting the image data. 12. The video data processing apparatus according to claim 11, wherein the input video data is compression-encoded data. 13. A method for determining the insertion timing of a new field by the field insertion timing indicating means includes the steps of: converting an output frame frequency obtained from output frame frequency information detected from video data; The video data processing device according to claim 11, wherein the video data processing device obtains the difference by calculating a difference between periods of a frame frequency to be output. 14. The video data processing apparatus according to claim 11, wherein image data of one field is repeatedly output to obtain newly inserted field image data. 15. The image data is output by changing the field order within one frame so that the output image data does not have a time order reversal or a field order shift. 12. The video data processing device according to item 11. 16. The video data processing apparatus according to claim 11, wherein the data processing output means generates a timing signal for outputting the image data on a field basis and outputs the timing signal to the field insertion timing instruction means.