JP2000201350A - Moving image compression converter, moving image decoding converter and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving image compression converter and a moving image decoding converter capable of remarkably reducing redundancy in the time axis direction and with a small amount of disorder of a contour even in video with clear contour. SOLUTION: Planes to be formed by the vertical direction and the time axis direction are connected in the shape of a folded book to be folded at an end in the time axis direction based on moving image data of a rectangular parallelpiped to be expressed by orthogonal coordinates in the horizontal, vertical and time axis directions and the plane is further formed as a still image formed by dividing the planes by unit of the number of pixels in the horizontal direction by a still image forming part 61. The moving image data formed by arranging the still images as an instruction of an arrangement deciding part 62 is outputted by compressing and encoding the data by the conventional moving image compression technique by a moving image compressing part 63. Next, the planes horizontally connected by arranging the still images to be included in the moving image data as the instruction of an arrangement recognizing part 72 are formed in the shape of the folded book by folding the planes as the same number of pixels in the horizontal direction based on the moving image data decoded by a moving image decoding part 71 by a blocking part 73. The moving image data formed by defining the fold as the horizontal direction is outputted by a moving image output part 74.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, image recording,
The present invention relates to an apparatus and a recording medium for compression conversion and decoding conversion of moving image data used in the fields of broadcasting and communication, and particularly relates to a moving image compression conversion apparatus for converting information into a high compression rate information amount. The present invention relates to a video decoding / conversion device that performs reverse conversion, and a recording medium for causing a computer to execute these functions.

[0002]

2. Description of the Related Art Conventionally, a number of techniques for compressing and encoding moving images have been considered. In particular, in the field of handling contents of a digital video recorded disk or digital television broadcast, the technique of applying digital video to the technique has been considered. Many recording devices and reproduction devices have been developed. One of the techniques is MPEG (Moving Picture E) which is an international standard encoding system for moving picture information compression.
In xparts Group), a frame can be compression-encoded alone, or motion compensation data for synthesizing a frame to be encoded and an approximate frame from already compressed-encoded frames, and the approximate frame And the difference between the frame to be encoded and the difference data compressed and encoded, the frame can be encoded, so that the redundancy in the time axis direction can be reduced and the compression ratio can be increased. I have. Also, JPEG (J), which is an international standard encoding system for information compression of still images, is used.
point Photographic Experts
The technique of Motion JPEG, which expresses a moving image by successively switching still images displayed on a screen by applying Group (Group), is also used.

In these MPEG and JPEG coding methods, a still image signal is divided into a plurality of blocks, and each block is subjected to DCT conversion (discrete).
(ecosine transform), and a technique of performing compression coding on a signal obtained by quantizing the obtained DCT coefficient. In addition to the above-described coding methods that use the DCT transform to reduce the redundancy in the spatial direction and increase the compression ratio, those that use the wavelet transform, those that use the fractal transform, those that use the run-length code, Various techniques are known.

[0004]

According to the above-mentioned MPEG coding method, a part similar to the frame to be coded exists in the already-compressed coded frame, which is extracted, translated, and synthesized. If a frame very close to the frame to be coded can be obtained simply by performing the above, the redundancy in the time axis direction can be greatly reduced by using the motion compensation data. However, in an image showing various changes, which are common in images accompanied by rotation of the subject, deformation of the subject, change in illumination, movement of the viewpoint, zooming, and the like,
In many cases, approximate frames cannot be synthesized, and in this case, the redundancy in the time axis direction cannot be reduced. In addition, the aforementioned D
The encoding method using the CT transform is effective in a video having a gentle outline, which is common in natural images, live-action images, and the like, but has a clear outline in an animation image, a graph image, a superimposed subtitle image, and the like. In the video, the contour is disturbed unless the compression ratio is reduced in accordance with the contour part having low redundancy in the spatial direction.

As described above, in the above-described moving picture coding method, the reduction of redundancy tends to be insufficient in the time axis direction and excessive in the spatial direction, and is not balanced. There was a problem. In addition, there is a problem that it is necessary to increase the compression ratio in order to pack more images into a communication line or a recording medium having a certain capacity. Due to the circumstances described above, the redundancy in the time axis direction can be significantly reduced,
There is a need for a compression conversion technique that has little contour distortion even in a video with clear contours and that can use the know-how of existing compression coding techniques, and a moving picture compression conversion apparatus and a moving picture decoding conversion apparatus that apply the techniques. Was.

SUMMARY OF THE INVENTION The present invention provides a moving picture compression / conversion apparatus capable of greatly reducing the redundancy in the time axis direction and having little contour distortion even in a video having a clear contour, and a moving picture decoding / conversion apparatus for performing the reverse conversion. It is intended to be. It is another object of the present invention to provide the above-described moving picture compression and conversion apparatus for transmitting communication or broadcast with scrambling and the above-mentioned moving picture decoding and conversion apparatus for receiving scrambled communication or broadcast.

Another object of the present invention is to provide the above-described moving picture decoding / converting apparatus capable of performing pseudo stationary special reproduction, and a recording medium on which moving picture data compressed by the above moving picture compression / converting apparatus is recorded. It is an object of the present invention to provide a recording medium in which a program for causing a computer to execute the function of the above-described moving image decoding and conversion apparatus is recorded.

[0008]

In order to achieve the above object, a moving picture compression / conversion apparatus according to the present invention is directed to a still image formed by arranging a predetermined number of pixels in parallel with a line segment formed by arranging a predetermined number of pixels. For moving image data obtained by arranging a plurality of data in the time axis direction, each of the line segments connected in the time axis direction is folded back along the line segment at the end in the time axis direction. A single folded surface formed by connecting all of the line segments is formed into a shape of a folded book which can be connected to a predetermined number of lines which is a divisor of the number of line segments included in the still image data. A still image forming unit that forms a line of still image data that can be divided by dividing the line segment as a unit and that can be opened if there is a fold, and the still image data obtained by the still image forming unit Before each, based on the order of the list Sequence determining means for determining the order and direction of the still image data; and moving image data which can be arranged in the direction of the time axis based on the order and direction determined by the sequence determining means. And a moving image compression means for compression-encoding.

The moving picture compression means is means for changing the arrangement of the still picture data by changing the deciding technique of the arrangement deciding means, and is used to transmit compressed moving picture data generated after the change. Prior to this, a means for transmitting the changed decision technique may be used.

In the moving picture compression means, a technique for compressing and encoding moving picture data is a technique typified by a motion JPEG technique for arranging individually compressed and encoded still picture data. May be.

In order to achieve the above object, a moving picture decoding / conversion apparatus according to the present invention converts a line segment formed by arranging a predetermined number of pixels into still image data formed by arranging a predetermined number of pixels in parallel on a time axis. Moving image decoding means for decoding the compressed moving image data with respect to compressed moving image data obtained by compressing and encoding moving image data formed by arranging a plurality of moving image data in the direction of Decrypted,
Based on the order of the arrangement of the still image data, a line recognizing unit that recognizes the order and direction of each of the still image data, and based on the order and the direction recognized by the line recognizing unit, A single rectangular surface formed by connecting all of the still image data so that the line segments are arranged at equal intervals on the same plane is divided into a predetermined number of multiples of the number of line segments included in the still image data. A block forming means for rearranging all the line segments into a rectangular parallelepiped block formed by folding back along the line segments so that the surface of the book becomes a folded book shape formed by folding, Based on the obtained block, each of the line segments arranged in the direction in which the surfaces are folded by the blocking means is regarded as still image data, and the arrangement of the still image data in the block is represented by time. Towards the axis It was the sequence, and a video output means for outputting the moving image data.

The arrangement recognizing means is means for remotely controlling a technique of recognizing the compressed moving image data by an apparatus for continuously transmitting the compressed moving image data, and the moving image output means outputs a signal representing a still image. A means for outputting moving image data in a form updated at predetermined time intervals may be used.

Further, the moving picture decoding / conversion apparatus of the present invention comprises pseudo still instruction means for receiving a pseudo still instruction during output of moving picture data, wherein the moving picture output means transmits a signal to an image display device representing a still picture. Is a means for outputting moving image data in a form that is updated at predetermined time intervals, and when the pseudo still instruction means receives a pseudo still instruction, the moving image data being output at that time is Originally, it is also preferable that the output means is a means for outputting a signal to the image display device so that the slow reproduction and the reverse reproduction are alternately repeated.

In order to achieve the above object, a moving picture decoding / conversion device according to the present invention includes a plurality of moving picture decoding / conversion devices described above, and rectangular parallelepiped moving image data output from these devices. Means for obtaining and outputting new rectangular parallelepiped moving image data by joining them so as to be adjacent to each other.

According to the present invention, at least one of a program for causing a computer to execute the function of the moving picture decoding / conversion apparatus and moving picture data compressed by the moving picture compression / conversion apparatus is recorded. Alternatively, it may be constituted by a computer-readable recording medium.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a moving picture compression conversion apparatus to which one embodiment of the present invention is applied will be described as a first embodiment with reference to the drawings.

First, the configuration will be described. FIG. 1 is a block diagram including a circuit configuration of a moving image compression conversion device according to this embodiment.
FIG. 2 is a diagram for explaining the format of moving image data input to the moving image compression conversion device according to this embodiment.
Shown respectively.

As shown in FIG. 1, the moving image compression / conversion device according to this embodiment includes a still image forming unit 61,
2 and a moving image compression unit 63. Still image forming unit 61
Is composed of a number recognition unit 64 and a moving image dividing unit 65. The moving image compression unit 63 includes a moving image reconstruction unit 66 and a compression encoding unit 67.

Here, the moving picture compression / conversion apparatus according to the present embodiment comprises a number of still images in which the number of pixels in the x-direction is 10 and the number of pixels in the y-direction is a predetermined number, t times in the direction of the time axis. It is assumed that the moving image data in the arranged format is to be subjected to compression conversion.

Moving image data in a format of t = 3, that is, a format consisting of three still images, is represented as shown in FIG. This is based on the idea that the moving image data is a plurality of still images arranged in the direction of the time axis. Further, assuming that a predetermined number of pixels arranged in the y-direction are connected to form a line segment, in this embodiment, FIG.
As shown in (1), one still image is formed from ten line segments. In order to distinguish each line segment, in the first still image in the time axis direction,
Number the line segments with integer numbers starting from 0 in the order of x direction, 2
Similarly, in the subsequent still images, integer numbers following them are assigned in the order of the x direction. The number of each line segment in FIG. 2 is described based on this rule. The moving image data in the format of t = 3 is also represented as shown in FIG. This is a view of FIG. 2 from below.

Next, the operation will be described. FIG. 3 is a diagram for explaining the rules of conversion in the moving image dividing section 65 and the moving image reconstructing section 66 in FIG. 1, and the moving image reconstructing section 66 in FIG.
FIG. 4 is a diagram for explaining moving image data composed by
Shown respectively.

First, the operation of the moving picture compression / conversion apparatus according to this embodiment will be described with reference to FIGS. .

When the moving picture data shown in FIG. 3A is input to the moving picture compression / conversion device according to the present embodiment, the number recognizing section 64 recognizes that the format is t = 3. The recognition results are arranged and the determination unit 62 and the moving image dividing unit 65 are arranged.
Notify.

Upon receiving the recognition result (t = 3) of the number-of-sheets recognition section 64, the moving image dividing section 65 outputs the number 3 in FIG.
In the still images, the connection of the line segments in the x direction is released, and the moving image data is decomposed into 30 line segments. Next, based on the line segments connected in the direction of the time axis, the line segments are connected in the direction of the time axis to form ten surfaces. Next, fold these faces along the end line segment in the direction of the time axis,
0 and 1, 21 and 22, 2 and 3, 23 and 24, 4 and 5, 2
Lines with the respective numbers of 5 and 26, 6 and 7, 27 and 28, and 8 and 9 are connected to each other, and one surface folded in the shape of a folded book shown in FIG. Constitute.

Next, the folding back of the surface shown in FIG. 3B is opened to make one flat surface shown in FIG. 3C. Next, the plane is divided into three still images shown in FIG. 3D by dividing the plane into ten line segments. Note that the unit of division (ie, 10) is the number of line segments (ie, 1) included in one still image in FIG.
0). The moving image dividing unit 65 passes the arrangement of the still images shown in FIG. 3D to the moving image reconstructing unit 66.

On the other hand, the recognition result (t =
Upon receiving 3), the arrangement determining unit 62 calculates the number of still images passed from the moving image dividing unit 65 to the moving image reconstructing unit 66 by multiplying t by a predetermined magnification. However, in this embodiment, since the magnification is 1, the multiplication need not be performed. Next, in response to the number of still images being three, the order and direction of each still image when arranging the three still images in the direction of the time axis are determined. In the order determination technique in the present embodiment, a still image whose original order is an odd number is placed first, and a still image whose even order is an even number is placed later. That is, in FIG. 3D, the order of the first row (odd number) is the first place,
The row (even number) ranks third and the third row (odd number) ranks second.
The rank “1.3.2” is determined so as to be ranked. In the direction determination technique in the present embodiment, the still image in which the original order is odd is left as it is, and the still image in which the order is even is switched in the positive and negative directions in the x direction. That is, in FIG. 3 (D), the direction of “front / front” is such that the direction of the first row (odd number) is face-up, the direction of the second row (even number) is face-down, and the direction of the third row (odd number) is face-up. Back / front "is determined. In this embodiment, the sign in the y direction is not switched. Then, the arrangement determining unit 62 determines the determined order “1.3”.
2 ”and the direction“ front / back / front ”are notified to the moving image reconstruction unit 66.

The moving image reconstructing section 66 includes an arrangement determining section 62
3D, and the arrangement of still images from the moving image dividing unit 65, the three still images shown in FIG. 3D are time-axis based on the order and direction. The moving image data shown in FIG. However, the still image on the second line in FIG.
As can be seen from comparison with FIG. 3C, since the left and right sides are originally reversed, the left and right directions in the figure do not change even if they are incorporated face down in FIG. FIG. 3
The moving image data of (E) is also represented as shown in FIG. This is a different view of FIG. 3 (E). The moving image data shown in FIG.
Passed to 7.

The compression encoding section 67 compresses and encodes the moving image data shown in FIG. 4H by a technique of compressing and encoding moving image data represented by the MPEG encoding method and outputs the result. However, if the compression encoding technique used in the compression encoding unit 67 cannot cope with the number of pixels in the x direction being 10, the moving image data in FIG. Is extended in the x direction, and the extended portion is filled with colorless pixels.

By the way, in FIG. 4 (H), the line segments adjacent to each other in the direction of the time axis in FIG.
They are adjacent in the x direction, that is, in the spatial direction. Further, in FIG. 4H, the line segments adjacent in the x direction in the second still image in FIG. 2 are not adjacent at all.

Next, the operation of the moving picture compression and conversion apparatus according to this embodiment will be described with reference to the drawings such as FIG.

The moving image data in the format of t = 5, that is, the format consisting of five still images, is compression-converted by the same procedure as described above in this embodiment. Number recognition unit 64
Recognizes that the input moving image data has a format of t = 5. The arrangement determination unit 62 determines the order “1.4.2.5.5” by the order and direction determination technique described in the present embodiment.
3 ”and the orientation“ front / back / front / back / front ”.

The moving image dividing section 65 reconnects the lines of the moving image data to form one surface folded in the shape of a fold book shown in FIG. 5 (J). Further, the turning of the surface is opened, and the image is converted into a sequence of five still images by dividing the image into ten line segments as a unit. Note that the numbers (0 to 49) for distinguishing the respective line segments in FIG. 5 (J) are described based on the same rule as in the case of t = 3 described above. The depth direction not shown is the y direction.

The moving image reconstruction unit 66 arranges the five still images described above in the order and direction described above to form the moving image data shown in FIG. The compression encoding unit 67
The moving image data of FIG. 5K is compression-encoded and output.

By the way, in FIG. 5 (K), the line segments adjacent to each other in the direction of the time axis are
They are adjacent in the x direction, that is, in the spatial direction. As can be seen by focusing on the line segments numbered from 10 to 39, most of the line segments adjacent in the x direction in FIG. 5J are adjacent in FIG. 5K. Not.

Next, taking a case where moving image data of another format is input as an example, a state of conversion in the moving picture compression / conversion device according to this embodiment is illustrated.

When moving image data of each format of t = 2, t = 1, t = 6, and t = 4 is input, the moving image dividing unit 65 connects the line segments of the moving image data. FIG. 5 (L) shows the surface folded and folded in the shape of the folded book,
FIGS. 5 (N), 5 (P), and 5 (R) show moving image data to be compression-encoded, which is constituted by the moving image reconstruction unit 66, as shown in FIGS. (O), FIG. 5 (Q), FIG.
(S) shows each of them. Note that the numbers for distinguishing the respective line segments in FIG. 5 are written based on the same rules as in the case of t = 3 described above.

In this embodiment, the moving image data in the format of t = 1 coincides with the moving image data in FIG. 5 (O). Only the operation of the compression encoding unit 67 is reflected in the moving image data. This indicates that moving image data in the format of t = 1 can be handled in the same manner as moving image data in other formats. However, moving image data in a format consisting of a plurality of still images cannot be compression-converted, and operates independently, and compression-encoding moving image data in a format consisting of a single still image without changing the number of the images. Such a moving image compression conversion device is not included in the scope of the present invention.

In this embodiment, the number of pixels in the x direction of the moving image data to be subjected to the compression conversion is set to 10. However, the present invention does not limit the number of pixels. 640, 704, 1280, etc.
A moving image compression / conversion device corresponding to a number of pixels other than the number of pixels can be provided. By the way, as can be understood by paying attention to FIGS. 5 (K) and 5 (M), when the number of pixels t in the time axis direction is a divisor of the number of pixels in the x direction, the number of pixels in the time axis is All the adjacent line segments are converted so that all of them are adjacent in the x direction, that is, in the spatial direction. Therefore, a common multiple of 2,3,5,8, that is, a multiple of 120, which is a relatively large divisor,
It is preferable to set the number of pixels in the x direction. In the present embodiment, the moving image data in the format consisting of six or less still images is compressed and converted. However, the present invention is not limited to six still images. It is also preferable that all moving image data in the form of a still image can be compression-converted, and that 8, 10, 12, 15,
It is also preferable that moving image data of a format composed of a specific number of still images, such as 20, 24, or 30 images, can be compression-converted in the same manner as described above.

In this embodiment, the moving image dividing section 65 is used.
However, in the case of one surface folded in the shape of a fold book, which is configured by reconnecting the line segments of the moving image data, FIG.
(B), FIG. 5 (J), FIG. 5 (L), FIG. 5 (N), FIG.
5 (R), the line segments of numbers 0 and 1 are connected to each other as shown in the respective diagrams of FIG. 5 (R). It is also preferable that the line segments numbered 1 and 2 be connected by the connection inverted in the direction. For example, in FIG. 3B, the numbers 0 and 1, 21 and 22, 2 and 3, 23 and 24, 4 and 5, 25 and 26, 6 and 7, 27 and 28, and 8 and 9, respectively. Are connected, but instead, 20 and 21, 1 and 2, 22 and 23, 3 and 4, 24 and 25, 5 and 6, 26 and 27, 7 and 8, 28 and 29, the line segments of the respective numbers may be connected to each other.

Also, the moving image dividing section 65 is based on the moving image data shown in FIG. 3A and does not go through the processes shown in FIGS. 3B and 3C, according to a previously stored arrangement change pattern. , The arrangement of the still images shown in FIG. Further, it is preferable that moving image data of a format consisting of still images other than three still images is processed according to the same pattern. The order and direction determination technique in the arrangement determination unit 62 may not change the order and direction. In this case, the moving image reconstruction unit 66 regards the arrangement of the still images from the moving image dividing unit 65 as moving image data in the same order and direction, and considers the compression encoding unit 67
Will be passed to.

Next, a moving picture compression and conversion apparatus to which another embodiment of the present invention is applied will be described as a second embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture compression conversion device according to this embodiment is the same as that of the first embodiment, and is shown in FIG.

Here, the moving picture compression and conversion apparatus according to this embodiment converts a still image in which the number of pixels in the x direction is an integral multiple of 8 and the number of pixels in the y direction is also an integral multiple of 8 in the direction of the time axis. It is assumed that moving image data in a format formed by arranging t images in FIG.

Next, the operation will be described. In the present embodiment, the compression encoding technique used in the compression encoding unit 67 divides a signal of a still image into small blocks each having a size of 8 pixels × 8 pixels, and performs DCT transform for each of the small blocks. To perform compression encoding. In this embodiment, since the number of pixels of the moving image data in the x direction is an integral multiple of 8, the number of pixels in the x direction in the compression encoding unit 67 in the compression encoding unit 67 of the first embodiment is reduced. No need to expand the number.

The operation of the moving picture compression / conversion device according to this embodiment is the same as that of the first embodiment except for the above-described parts and the changes due to the change in the number of pixels in the x direction. Note that the configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the first embodiment.

As described above, in the moving image compression / conversion device according to the present invention, most of a series of line segments in the time axis direction is converted into a series of line segments in the space direction.
It is compression encoded. For this reason, even if the input moving image data is a video that moves complicatedly due to rotation of the subject, deformation of the subject, change in illumination, movement of the viewpoint, zooming, etc., the redundancy in the time axis direction is greatly reduced. it can. However,
If the motion of the input moving image data is steep and the compression ratio is not high enough, the smoothing is performed too much in the time axis direction, and bleeding occurs between adjacent frames. However, in normal reproduction, the bleeding is hidden behind a residual image effect caused by human visual characteristics, and is not conspicuous. In the moving picture compression / conversion device according to the present invention, a series of line segments in the spatial direction is converted so as to be dispersed by losing most of its adjacency, and then compression-encoded. As a result of this conversion, the contour portion having a high spatial frequency is also dispersed, and the spatial frequency in the direction in which the line segments are connected decreases. For this reason, even when the input moving image data is a video having a clear outline such as an animation video, a graph video, or a subtitle super video, the disturbance of the outline can be reduced.

In other words, according to the moving picture compression / conversion device according to the present invention, a part of the function of reducing the redundancy is turned from the spatial direction where the contour tends to be disturbed to the time axis direction so as to be balanced. High compression ratio is obtained. In the moving picture compression / conversion device according to the present invention, the function of reducing the redundancy in the time axis direction plays the role of a low-pass filter in the time axis direction. If the noise includes rough noise that requires additional processing, the redundancy can be reduced by smoothing the noise, and the compression ratio can be increased.

Next, a moving picture compression and conversion apparatus to which another embodiment of the present invention is applied will be described as a third embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture compression conversion device according to this embodiment is the same as that of the first embodiment, and is shown in FIG. Further, the format of the moving image data input to the moving picture compression conversion apparatus according to this embodiment is also the same as that of the first embodiment.

Next, the operation will be described. The operation of the moving picture compression conversion apparatus according to this embodiment is slightly different from that of the first embodiment. This operation will be described with reference to the drawings such as FIGS. 3 and 4 by taking as an example the case where the moving image data in the format of t = 3 is compression-converted.

When the moving image data of FIG. 3A is input to the moving picture compression / conversion device according to this embodiment, the number recognition section 64 performs the same operation as in the first embodiment in this case. .

The moving image dividing section 65 forms one plane shown in FIG. 3C from the moving image data of FIG. 3A through the process of FIG. 3B. The operation so far is the same as in the first embodiment. By the way, the number of line segments included in one still image in FIG.
0) are four of 1, 2, 5, and 10, and FIG.
The unit for dividing the plane in (C) needs to be one of these units. Although the division unit in the first embodiment is ten, the division unit in the present embodiment is five. That is, the dividing section 65 of the moving image divides the plane of FIG.
The image is divided into the six still images shown in FIG.

On the other hand, the recognition result (t =
Upon receiving 3), the arrangement determining unit 62 calculates the number of still images passed from the moving image dividing unit 65 to the moving image reconstructing unit 66 by multiplying t by a predetermined magnification. In this embodiment, since this magnification is twice, it can be understood that the number of sheets is six. next,
When arranging six still images in the direction of the time axis, the order and direction of each still image are determined. That is, the first
The order “1.4.2.5.3.6” and the direction “front / back / front / back / front / back” are determined by the same ranking and direction determination technique as in the embodiment.

The moving image reconstructing unit 66 includes an arrangement determining unit 62
, And the arrangement of still images from the moving image dividing unit 65 are received. In addition, when the determined order "1.4.2.5.3.3.6" is applied, FIG.
In the first line, the second line, the third line, the fourth line, the fifth line,
The order of the sixth line is 1st, 4th, 2nd, 5th,
Third and sixth place. In addition, when the determined orientation “front / back / front / back / front / back / back” is applied, 1 (f) in FIG.
The directions of the second, third, fourth, fifth, and sixth rows are face-up, face-down, face-up, face-down, face-up, face-down, respectively. The moving image reconstructing unit 66 includes the first
As in the embodiment, based on this order and orientation, FIG.
By arranging the six still images in (F) in the direction of the time axis, the moving image data shown in FIG. However, the still images on the second, fourth, and sixth lines in FIG. 3 (F) are originally left and right reversed as can be seen from comparison with FIG. 3 (C). Even if it is incorporated face down in (G), the left and right directions in the figure do not change. The moving image data of FIG. 3G is also represented as shown in FIG. This is a different view of FIG. 3 (G).

As in the first embodiment, the compression encoding section 67 compresses and encodes the moving picture data shown in FIG. 4I by a technique for compressing and encoding moving picture data, and outputs the result. However, if the compression encoding technique used in the compression encoding unit 67 cannot cope with the fact that the number of pixels in the x direction is 5, the moving image data in FIG. Is extended in the x direction, and the extended portion is filled with colorless pixels.

The configuration and operation in this embodiment are as follows.
The present invention is not limited, and can be applied in the same manner as in the first embodiment.

Next, a moving picture compression and conversion apparatus to which another embodiment of the present invention is applied will be described as a fourth embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture compression conversion device according to this embodiment is the same as that of the first embodiment, and is shown in FIG.

Here, the moving picture compression conversion apparatus according to this embodiment converts a still image in which the number of pixels in the x direction is an integral multiple of 8 and the number of pixels in the y direction is also an integral multiple of 8 in the direction of the time axis. It is assumed that moving image data in a format formed by arranging t images in FIG.

Next, the operation will be described. Moving image dividing section 65
In the third embodiment, the unit of division is 5 in the third embodiment, but is 8 in the present embodiment. In other words, the moving image dividing unit 65 forms an arrangement of still images divided into eight line segments as a unit.

In this embodiment, the compression encoding unit 6
The compression encoding technique used in 7 divides a signal of a still image into small blocks each having a size of 8 pixels × 8 pixels.
It is assumed that this technique performs DCT transform for each small block and performs compression encoding. In the present embodiment, since the number of pixels in the x direction of the moving image data is converted to eight,
The function of expanding the number of pixels in the x direction at the time of compression encoding, which is provided in the compression encoding unit 67 of the third embodiment, is unnecessary.

The operation of the moving picture compression / conversion apparatus according to this embodiment is the same as that of the third embodiment except for the above-described parts and the changes due to the change in the number of pixels in the x direction. Note that the configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the third embodiment.

As described above, according to this embodiment,
The compression encoding unit 67 converts the moving image data into 8 pixels × 8 pixels.
When dividing into small blocks of the pixel size, it is not necessary to divide in the x direction, so that the circuit of the compression encoding unit 67 can be simplified.

Next, a moving picture decoding / conversion apparatus to which one embodiment of the present invention is applied will be described as a fifth embodiment with reference to the drawings.

First, the configuration will be described. FIG. 1 is a block diagram including the circuit configuration of the moving picture decoding / conversion device according to this embodiment. FIG. 4 is a diagram for explaining the format of compressed moving image data input to the moving picture decoding / converting apparatus according to this embodiment.

As shown in FIG. 1, the moving picture decoding and converting apparatus according to this embodiment comprises a moving picture decoding section 71 and a row recognizing section 7.
2, a blocking unit 73, and a moving image output unit 74. The blocking unit 73 includes a number recognition unit 75 and a block configuration unit 76.

Here, the moving picture decoding / converting apparatus according to the present embodiment is configured such that the number of pixels in the x direction is 10 and the number of pixels in the y direction is a predetermined number, and the number of still pictures is t in the time axis direction. It is assumed that a compressed moving image in a format obtained by compressing and encoding moving image data that has been arranged is a target of decoding conversion. A compressed moving image in a format of t = 3, that is, a format including three still images, is obtained by compressing and encoding moving image data represented as shown in FIGS. 4 (H) and 3 (E). It is.
However, if the compression coding technique used for this compression coding cannot cope with the number of pixels in the x direction being 10, the moving image data in FIG. It is a meaningless pixel and may be extended in the x direction. However, since this extension in the x direction is not the essence of the present invention,
In the description of the moving picture decoding / converting apparatus according to the present invention, it is assumed that there is no extended part.

Next, the operation will be described. The operation of the moving picture decoding / converting apparatus according to the second embodiment substantially reverses that of the moving picture compression / converting apparatus according to the first embodiment. t =
In the case of decoding and converting a compressed moving image of the format 3 as an example,
The operation of the moving picture decoding / conversion device according to this embodiment will be described with reference to the drawings such as FIG.

When a compressed moving image in the format of t = 3 is input to the moving image decoding / converting apparatus according to the present embodiment, the moving image decoding unit 71 executes the moving image data conversion represented by the MPEG coding method. The compressed moving image is decoded into the moving image data of FIG. 3E by using a technique of compressing and encoding.

The number recognizing unit 75 recognizes that the format is t = 3 from the moving image data shown in FIG. 3E, and arranges the recognition result in the arrangement recognizing unit 72 and the block composing unit 76.
Notify.

Upon receiving the recognition result (t = 3) of the number recognizing unit 75, the arrangement recognizing unit 72 recognizes the order and direction of each still image when rearranging the three still images. The technique of rank recognition in the present embodiment divides the arrangement of still images in the moving image data into the first half up to the middle in the time axis direction and the second half after the middle, and then The odd rank and the still picture in the latter half are recognized as the even rank, respectively. In other words, in FIG. 3E, the first (first half) rank is first (odd), the second (first half) rank is third (odd), and the third (second half) rank is second ( Even number)
The rank “1.3.2” is recognized so that The direction recognition technique in the present embodiment recognizes the first half still image as face up as it is, and the second half still image as face down with the x direction switched between positive and negative. In other words, in FIG. 3E, the orientation of the first sheet (first half) is face-up, the second sheet (first half) is face-up, and the third sheet (second half) is face-down. Recognize "front / back". In this embodiment, the sign in the y direction is not switched. Then, the line recognizing unit 72 calculates the recognized order “1.3.2” and the direction “front / front / back”,
The block configuration unit 76 is notified.

Upon receiving the order and direction from the arrangement recognizing unit 72, the block forming unit 76 converts the three still images in FIG. 3E based on the order and direction into the three still images in FIG. Rearrange as shown in. However, the left and right sides of the still image in the second row in FIG. 3D are written in opposite directions in order to express how the faces are connected. Next, by connecting these three still images so that all the line segments are arranged at equal intervals on the same plane, one rectangular surface shown in FIG. 3C is formed. Next, the surface of FIG. 3C is folded back along the line segment so that the ten surfaces are folded to form a rectangular parallelepiped block having the shape of a folding book shown in FIG. 3B. Note that the number of folded surfaces (ie, 10) is equal to the number of line segments (ie, 1) included in one still image in FIG.
0). The block forming unit 76 passes the rectangular block to the moving image output unit 74.

The moving image output section 74 is based on the rectangular parallelepiped block formed by the block forming section 76, and is a line connecting the ten faces in FIG. The three still images shown in FIG. 3A are formed by reconnecting the line segments so that the arrangement of the minutes becomes a still image. It should be noted that if the arrangement of still images in FIG.
(A) is regarded as moving image data. Then, the moving image output unit 74 outputs the moving image data of FIG.

In this embodiment, the number of pixels in the x direction of the moving image data to be decoded and converted is set to 1 by setting the number of folding surfaces to 10 in the block forming section 76.
Although the number of pixels is set to 0, the present invention does not limit the number of pixels, and it is possible to provide a moving picture decoding conversion apparatus corresponding to a number of pixels other than 10, such as 720 or 1920, in the same manner as described above. . Further, in the present embodiment, a state is shown in which a compressed moving image in a format including three still images is decoded and converted. However, this is not limited to the number of still images, and the number of still images of a predetermined number or less is not limited. It is also preferable that all of the compressed moving images in the contained format can be decoded and converted, and it is also preferable that the compressed moving image in the format containing a specific number of still images can be decoded and converted in the same manner as described above.

Further, in the present embodiment, in the moving image output unit 74, the still images in the above-described blocks are arranged in the direction of the time axis as they are, but this does not limit the present invention. By arranging from the still image on the opposite side of the above, moving image data in which the sign in the direction of the time axis is switched may be output. In addition, the block configuration unit 76
From the arrangement of still images in (D), the above-described rectangular parallelepiped block may be formed according to the arrangement change pattern stored in advance without going through the process of FIG. Further, it is preferable to process a compressed moving image in a format containing still images other than three in accordance with the same pattern. Also, the technique of recognizing the order and the direction in the arrangement recognizing unit 72 may not change the order and the direction. In this case, the block configuration unit 76 does not have to dare rearrange the arrangement of the still images in the moving image data.

Next, a moving picture decoding / conversion apparatus to which another embodiment of the present invention is applied will be described as a sixth embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture decoding / converting apparatus according to this embodiment is the same as that of the fifth embodiment, and is shown in FIG. FIG. 4 is a diagram for explaining the format of compressed moving image data input to the moving picture decoding / converting apparatus according to this embodiment.

Here, the moving picture decoding / converting apparatus according to this embodiment converts a still image having 5 pixels in the x direction and a predetermined number of pixels in the y direction into 2 × in the direction of the time axis. It is assumed that a compressed moving image in a format obtained by compressing and encoding moving image data formed by arranging t images is to be subjected to decoding conversion. Note that t is a natural number. A compressed moving image in a format of 2t = 6, that is, a format containing six still images, is shown in FIG.
The moving image data represented as (I) and FIG. 3 (G) is compression-encoded. However, the compression coding technique used for this compression coding is that the number of pixels in the x direction is 5
In the case where it is impossible to correspond to the number of pixels, the moving image data in FIG. 4 (I) may be extended in the x direction by meaningless pixels such as colorless. However, in the description of the moving picture decoding / conversion device according to the present invention, it is described that there is no extended part.

Next, the operation will be described. The operation of the moving picture decoding / converting apparatus according to this embodiment follows substantially the reverse course of the moving picture compression / converting apparatus according to the third embodiment, and is slightly different from that of the fifth embodiment. The operation of the moving picture decoding / converting apparatus according to this embodiment will be described with reference to the drawings such as FIG. 3 by taking as an example the case of decoding / converting a compressed moving picture of 2t = 6 format.

When a compressed moving image in the format of 2t = 6 is input to the moving image decoding / converting apparatus according to this embodiment, the moving image decoding unit 71
Using a technique of compression encoding moving image data for decoding,
The compressed moving image is decoded into the moving image data of FIG.

The number recognizing unit 75 recognizes that the format is 2t = 6 from the moving image data of FIG.
The recognition result is arranged and the recognition unit 72 and the block configuration unit 7
Notify 6.

Upon receiving the recognition result (2t = 6) of the number recognizing unit 75, the arrangement recognizing unit 72 recognizes the order and direction of each still image when rearranging the six still images.
That is, by the same technique of recognizing the order and direction as in the fifth embodiment, the order “1.3.5.2.4.6.” And the direction “front / front / front / back / back / back” Recognize.

Upon receiving the order and the direction from the arrangement recognizing unit 72, the block forming unit 76 converts the six still images in FIG. 3G based on the order and the direction into the still images in FIG. Rearrange as shown in. However, the second line in FIG.
The still images on the fourth and sixth lines are written left and right in opposite directions in order to express how the faces are connected. Next, by connecting these six still images so that all the line segments are arranged at equal intervals on the same plane, one rectangular surface shown in FIG. 3C is formed. Next, the surface of FIG. 3C is folded back along the line segment so that the ten surfaces are folded to form a rectangular parallelepiped block having the shape of a folding book shown in FIG. 3B. The number of surfaces to be folded (ie, 10)
Is one of the multiples of the number of line segments (ie, 5) included in one still image in FIG. 3 (G), and the magnification is twice.

The operation of the moving picture output unit 74 is the same as that of the fifth embodiment.

The configuration and operation in this embodiment are as follows.
The present invention is not limited, and can be applied similarly to the fifth embodiment.

Next, a moving picture decoding / conversion apparatus to which another embodiment of the present invention is applied will be described as a seventh embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture decoding / converting apparatus according to this embodiment is the same as that of the fifth embodiment, and is shown in FIG.

Here, the moving picture decoding / converting apparatus according to this embodiment converts a still picture having eight pixels in the x direction and an integral multiple of eight pixels in the y direction into b in the time axis direction. It is assumed that a compressed moving image in a format obtained by compressing and encoding moving image data formed by arranging xt images is to be subjected to decoding conversion. Note that t is a natural number, and b is a magnification. At the time of this compression encoding, the signal of the still image is converted into 8 pixels × 8 pixels.
It is assumed that a technique of dividing into small blocks of a pixel size, performing DCT transform for each of the small blocks, and compression-encoding the divided blocks is used.

Next, the operation will be described. The operation of the moving picture decoding / converting apparatus according to the fourth embodiment substantially follows the operation of the moving picture compression / converting apparatus according to the fourth embodiment.

In the present embodiment, the block configuration section 76
The number of surfaces to be folded is 8 × b. As a result, the moving image data to be decoded and converted is composed of t still images, and the number of pixels in the x direction is 8 × b.

The operation of the moving picture decoding / conversion apparatus according to this embodiment is the same as that of the sixth embodiment except for the parts described above. The configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the sixth embodiment.

Next, a moving picture compression and conversion apparatus to which another embodiment of the present invention is applied will be described as an eighth embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture compression / conversion device according to this embodiment is an extension of the configuration of the first embodiment. The moving image compression conversion device according to this embodiment includes a stream dividing unit.

Here, it is assumed that a moving image bit stream in a format that can be obtained by updating a signal representing a still image at predetermined time intervals is input to the moving image compression conversion apparatus according to this embodiment.

Next, the operation will be described. FIG. 8 is a diagram for explaining a compressed moving image to be output.

When the moving image bit stream starts to be input to the moving image compression / conversion device according to the present embodiment, the stream dividing unit determines whether there is a scene change between the still images adjacent in the time axis direction. This determination is, for example, the amount of change in luminance in a specific range excluding the center of the still image,
This is performed by a method such as comparing with a predetermined threshold. Then, when a scene change is detected, the moving image bit stream is divided at that position, thereby obtaining moving image data in a format including a finite number of still images. In the present embodiment, if there is no scene change six times in a row, the same processing as when a scene change is detected is performed. As a result, the number of still images included in one piece of moving image data is six or less. The stream dividing unit converts the moving image data into a number recognizing unit 64.
Pass to.

The operation of the moving picture compression / conversion device according to this embodiment is the same as that of the second embodiment except for the parts described above.

For example, the moving image bit stream is divided into six, four, two, one, three
When the moving image compression and conversion apparatus according to this embodiment is sequentially divided into five, six, and six still images, the moving image compression and conversion device according to the present embodiment sequentially outputs the arrangement of the compressed moving images shown in FIG. However, the compressed moving images D1 to D7 are shown in the form of a sequence of decoded still images.

In this embodiment, the compression encoding section 67
The compression encoding technique used in JPEG is Motion JPEG
May be a technique of arranging individually compressed and encoded still images, but in such a case, it is necessary to output information for maintaining a united compressed video. There is. For example, when outputting a sequence of compressed moving images shown in FIG. 8, D1, D2, D3, D3
At the beginning of each of the compressed moving images of 4, D5, D6, and D7, information of the number of still images included, including 6, 4, 2, 1, 3, 5, and 6, is displayed. It is preferable to attach a header containing the information. Alternatively, a control code serving as punctuation information may be output at the end of each compressed moving image.

Next, a moving image compression conversion apparatus to which another embodiment of the present invention is applied will be described as a ninth embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture compression / conversion device according to this embodiment is an extension of the configuration of the first embodiment. The moving image compression and conversion apparatus according to this embodiment stores the order and the orientation prepared for the number of still images of one, two, three, four, five, and six, respectively. And a rewritable storage area.

Next, the operation will be described. The operation of the moving picture compression / conversion device according to this embodiment is slightly different from that of the second embodiment. FIG. 6 is a diagram for explaining the orientation of a still image, and FIG. 7 is a diagram for explaining how to apply scrambling.

In this embodiment, the compression encoding section 67
Performs output of a compressed moving image in a form of transmitting communication or broadcasting.

Here, the orientation of the still image will be described.
FIG. 6 shows a still image before the orientation is changed, that is, in the normal position. However, the alphabetic characters (N, S, W, E) are added to the still image for explanation of the direction, and are not patterns of the still image itself. By switching the sign in the vertical direction and the sign in the horizontal direction based on the still image at the positive position, the four directions shown in FIG. 6 can be changed. In the directions of SE and SW, the signs in the vertical direction in the figure are exchanged, and in the directions of NW and SW, the signs in the lateral direction in the figure are exchanged.

Here, a method of scrambling will be described. In the moving image reconstruction unit 66, a portion where six still images are arranged is represented as shown in FIG. Since the video represented by each still image has been processed, it is difficult to identify the content with human eyes. In FIG. 7, the connection between the lines before scrambling and after scrambling represents the technique for determining the rank, and the alphabetic character in the middle of this line represents the technique for determining the direction. By frequently changing these two determination techniques, it is possible to transmit secret communications and broadcasts that are difficult to see.

In this embodiment, the arrangement determining unit 62
When arranging up to six still images in the direction of the time axis, the order and direction of each still image are determined. The order and orientation determination techniques in the present embodiment are 1, 2, 3, 4,
Five and six still images are stored in rewritable storage areas prepared for the respective numbers of still images in the form of order and direction. The arrangement determining unit 62 reads and uses this. For example, in the storage area of the ranking for six sheets, a sequence of six numerical values from 1 to 6 is stored in the ranking “6.55.4.3”.
As shown in “2.1”, in the storage area for the orientation of six sheets, the arrangement of the six orientations is indicated by the orientation “NE / NW / SW / SE / NE”.
. NW "may be stored. Therefore, by rewriting this storage area, the technique of determining the order and direction can be changed.

The moving picture reconstructing section 66 has a function of generating a trigger for changing the scrambling method. This trigger may be generated, for example, at a predetermined time at dawn, or may be generated at a random probability.
When the trigger is generated, the moving image reconstruction unit 66
The operation of arranging still images is temporarily stopped. Next, the technique for determining the order is switched. That is, in the storage area for the order of six sheets, the arrangement of the six numerical values is rearranged at random, and the storage areas for the order of two, three, four, and five sheets also have the same order. Sorted similarly. Next, the direction determination technique is replaced. In other words, in the storage area for the direction of six sheets for six sheets, the six directions are randomly rewritten to any one of NE, NW, SE, and SW, and
The storage areas in the orientations for one sheet, three sheets, four sheets, and five sheets are similarly rewritten.

Next, an inverse mapping is obtained from the contents of the storage area, that is, a technique for determining the order and orientation after the replacement, and the obtained recognition technique is transmitted in the same manner as the compressed moving image. . This recognition technique will be described with an example. The decision technique in FIG. 7 uses 1 to 1 (NE) and 2 to 4 (N
W), 3 to 2 (NE), 4 to 5 (NW), 5 to 3
(NE), 6 to 6 (NW). This is because the order is “1, 4, 2, 5, 3, 6” and the direction is “NE, NW, N”.
E · NW · NE · NW ”. The inverse mapping to this is 1 (NE) to 1, 2 (NE) to 3,3 (N
E) to 5, 4 (NW) to 2, 5 (NW) to 4, 6
(NW) is mapped to 6. This is a recognition technique, in which the order is “1.3.5.5.2.4.6” and the direction is “NE · N”.
E, NE, NW, NW, NW ". Thus, the recognition technique and the decision technique are in a mutually convertible relationship. When the transmission of the recognition technique is completed, the moving image reconstruction unit 66 restarts the operation of arranging the still images by using the technique of determining the order and the orientation after the replacement.

The operation of the moving picture compression / conversion device according to this embodiment is the same as that of the second embodiment except for the parts described above. As described above, according to this embodiment, it is possible to provide a moving image compression and conversion apparatus that scrambles and transmits communication or broadcast.

In the present embodiment, the order and the technique for determining the direction are exchanged by rewriting the order and the direction in the storage area. However, this does not limit the present invention. May be rewritten. The configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the second embodiment.

Next, a moving picture decoding / converting apparatus to which another embodiment of the present invention is applied will be described as a tenth embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture decoding / converting apparatus according to this embodiment is the same as that of the fifth embodiment.

Next, the operation will be described. The operation of the moving picture decoding / converting apparatus according to this embodiment is substantially the reverse of that of the moving picture compression / converting apparatus according to the ninth embodiment.

In this embodiment, a sequence of compressed moving images is input in a form of receiving a communication or a broadcast. Also, the technique of recognizing the rank and the direction is received in the same manner as the compressed moving image. In this embodiment, the moving image output unit 74 outputs the moving image data as a television signal or a video signal at 30 frames per second.

When a rank and direction recognition technique is received, the arrangement recognition unit 72 applies the recognition technique to compressed moving pictures received thereafter. This means that the order and orientation recognition technique used by the arrangement recognition unit 72 is remotely controlled from the device that transmits the compressed moving image so that the scramble can be released.

In this embodiment, moving image data is output in a format for updating a signal representing a still image, such as a television signal or a video signal, at predetermined time intervals, that is, in a format which is relatively difficult to be taken into a computer. By that
The decoding-converted moving image data is hardly copied by a computer.

The operation of the moving picture decoding / converting apparatus according to this embodiment is the same as that of the fifth embodiment except for the parts described above. As described above, according to this embodiment, it is possible to provide a moving picture decoding / conversion apparatus that receives scrambled communication or broadcast.

In this embodiment, the technique for recognizing the rank and direction is received from the same transmission path as that of the compressed moving picture. However, this is not a limitation of the present invention, and is not limited to another transmission method such as a telephone line. It may be received from a route or read from a distributed recording medium. Note that the configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the fifth embodiment.

Next, a moving picture decoding / conversion apparatus to which another embodiment of the present invention is applied will be described as an eleventh embodiment with reference to the drawings.

First, the configuration will be described. The configuration of the moving picture decoding / conversion device according to this embodiment is an extension of the configuration of the fifth embodiment. The moving picture decoding / conversion device according to this embodiment includes a pseudo stillness instructing unit.

Next, the operation will be described. The operation of the moving picture decoding / converting apparatus according to this embodiment is slightly different from that of the fifth embodiment. FIG. 8 is a diagram for explaining a compressed moving image to be input.

The input compressed moving image may include bleeding between adjacent frames. This bleeding is inconspicuous in normal reproduction, but becomes a cause of concern about adjacent frames in still special reproduction. The present embodiment is to provide a pseudo still function so as to suppress a situation where still special reproduction is required.

In this embodiment, a sequence of compressed moving images is input in a form read from a recording medium. In the present embodiment, the moving image output unit 74 converts the moving image data into
It is output as a signal for image display, such as a television signal or a video signal at 30 frames per second.

When the moving picture decoding / converting apparatus according to this embodiment is started, reading of the sequence of compressed moving pictures shown in FIG. 8 starts, and the moving picture data is output and output in the same manner as in the fifth embodiment. That is, reproduction is started.

Here, the decoding conversion of the compressed moving image D1,
It is assumed that the reproduction and the decoding conversion of the compressed moving image D2 have been completed, and the pseudo stillness has been instructed by the operator during the reproduction. Upon receiving the pseudo still instruction, the pseudo still instruction unit switches the output method of the moving image output unit 74 to a method of repeatedly outputting one still image several times, that is, slow reproduction. Incidentally, the compressed moving image D2 includes four still images, and the moving image data obtained by decoding and converting the still images includes four still images. After the slow playback up to the fourth still image is completed, the moving image output unit 7
4 is the fourth, third, and fourth images based on the four still images.
Output of the second and first sheets and output in the reverse order of normal reproduction, that is, reverse reproduction and slow reproduction of the first to fourth sheets are alternately repeated.

The operation of the moving picture decoding / converting apparatus according to this embodiment is the same as that of the fifth embodiment except for the parts described above. As described above, according to this embodiment, it is possible to provide a moving picture decoding / converting apparatus capable of performing pseudo stationary special reproduction.

Next, a moving picture decoding / converting apparatus to which another embodiment of the present invention is applied will be described as a twelfth embodiment with reference to the drawings.

First, the configuration will be described. The moving picture decoding / conversion apparatus according to this embodiment includes 30 sets of decoding / conversion sections and the output combining section, which have the same configuration as the fifth embodiment.

Next, the operation will be described. The operation of each of the 30 decoding conversion units is the same as that of the moving image decoding conversion device of the fifth embodiment. However, in the present embodiment, each of the 30 decoding conversion units can output moving image data in a format formed by arranging 30 still images of 24 × 480 pixels in the time axis direction. No other output is possible. The x direction in the fifth embodiment is limited to the horizontal direction in this embodiment. This is useful if you do not want to disturb the vertical profile, which is relatively common in upright objects to withstand gravity.

In rectangular coordinates in the horizontal, vertical and time axis directions, the moving image data can be said to be a rectangular parallelepiped. The output combining unit joins the rectangular parallelepiped moving image data output from the 30 decoding conversion units so as to be adjacent to each other in the horizontal direction, thereby forming a format including 30 still images of 720 horizontal pixels × 480 vertical pixels. Of moving image data
Output this.

It should be noted that, when connecting rectangular moving image data, adjacent moving image data is shifted by one pixel in the time axis direction and connected in a stepwise manner. Since the peak can be smoothed,
preferable. However, in order to make this into a rectangular parallelepiped shape, it is necessary to fill a step in the time axis direction with meaningless pixels such as colorless. In addition, it is also preferable that the arrangement of the sequentially input compressed moving images is cyclically allocated to each of the decoding conversion units. Note that the configuration and operation in the present embodiment do not limit the present invention, and can be applied similarly to the fifth embodiment.

Next, another embodiment of the present invention will be described as a thirteenth embodiment with reference to the drawings.

First, the configuration will be described. This embodiment has one element, a program for causing a computer to execute the function of the moving image decoding / conversion device according to the present invention, and moving image data compressed by the moving image compression / conversion device according to the present invention. And a computer-readable recording medium on which at least one of the above is recorded.

Next, the operation will be described. When the above-mentioned program is recorded on a recording medium, even if the moving picture decoding / conversion device according to the present invention is not possessed, its function can be used using a computer. When the above-described compressed moving image data is recorded on a recording medium, the remaining compression capacity can be used for further recording due to the high compression ratio. When both the above-described compressed moving image data and the above-described program are recorded on a recording medium, the decoded moving image data can be obtained using a computer.

[0135]

As described above, according to the first aspect of the present invention, the redundancy in the time axis direction can be greatly reduced.
It is possible to provide a moving image compression conversion device in which contours are less disturbed even in a video having clear contours.

According to the second aspect of the present invention, it is possible to provide a moving image compression / conversion device that transmits communication or broadcast after scrambling.

According to the fourth aspect of the present invention, it is possible to provide a moving picture decoding / conversion apparatus which performs a conversion reverse to that of the first aspect.

According to the fifth aspect of the present invention, it is possible to provide a moving picture decoding / converting apparatus for receiving a scrambled communication or broadcast.

According to the invention described in claim 6, it is possible to provide a moving picture decoding / converting apparatus capable of performing pseudo stationary special reproduction.

[Brief description of the drawings]

FIG. 1 shows a video compression / conversion device according to an embodiment of the present invention and a video decoding / conversion device according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating a circuit configuration.

FIG. 2 is a diagram for explaining a format of moving image data that is input to a moving image compression conversion device according to a first embodiment of the present invention and output from a moving image decoding conversion device according to a fifth embodiment of the present invention; It is.

FIG. 3 illustrates a moving image dividing unit 65, a moving image reconstructing unit 66, a block forming unit 76, and a moving image output unit 74 in FIG.
It is a figure for explaining the law of conversion.

FIG. 4 is a diagram for explaining moving image data that is configured by the moving image reconstruction unit 66 in FIG. 1 and decoded by the moving image decoding unit 71;

FIG. 5 is a diagram for explaining a state of conversion of moving image data in the first embodiment of the present invention.

FIG. 6 is a diagram for explaining a direction of a still image in a ninth embodiment of the present invention.

FIG. 7 is a diagram for explaining a method of scrambling and a relationship between a recognition technique and a decision technique in a ninth embodiment of the present invention.

FIG. 8 is a view for explaining a sequence of compressed moving images output from a video compression conversion apparatus according to an eighth embodiment of the present invention and input to a video decoding conversion apparatus according to the eleventh embodiment of the present invention; FIG.

[Explanation of symbols]

60 moving image compression converter, 61 still image forming unit, 62 line arrangement determining unit, 63 moving image compressing unit, 6
4 ‥‥‥ number recognition unit, 65 ‥‥‥ moving image dividing unit, 6
6 ‥‥‥ video image reconstruction unit, 67 ‥‥‥ compression encoding unit,
70 moving image decoding / conversion device, 71 moving image decoding unit, 72 line arrangement recognizing unit, 73 blocking unit,
74 ‥‥‥ video output unit, 75 ‥‥‥ number recognition unit, 76 ‥
‥‥ Block component.

Claims (8)

[Claims] 1. A still image data obtained by arranging a predetermined number of pixels in parallel with a predetermined number of pixels, and moving image data obtained by arranging a plurality of pixels in a time axis direction. All the line segments are connected so that each of the line segments connected in the direction of the axis is connected to be folded along the line segment at the end in the direction of the time axis to form a folding book. One possible folded surface is divided into units of a predetermined number of the line segments, which is a divisor of the number of line segments included in the still image data, and if there is a fold, the surface can be opened. Still image forming means for forming an arrangement of image data, and the order and direction of each of the still image data are determined based on the order of arrangement of the still image data obtained by the still image forming means. Arrangement determining means and the arrangement determining means Moving image compression means for compressing and encoding moving image data capable of arranging all of the still image data in the direction of the time axis based on the order and direction determined in the above. Compression converter. 2. An apparatus for transmitting a secret communication or broadcast which is difficult to be peeped, wherein said moving image compression means can change a method of arranging said still image data by exchanging a deciding technique of said arrangement deciding means. 2. The moving image compression / conversion device according to claim 1, wherein the means for transmitting the determination technique after the replacement is performed before transmitting the compressed moving image data generated after the change. . 3. A technique for compressing and encoding moving picture data in the moving picture compression means is a technique typified by a motion JPEG technique for arranging data obtained by individually compressing and encoding each of the still picture data. The moving image compression conversion device according to claim 1 or 2, wherein: 4. Compression encoding of moving image data obtained by arranging a plurality of still image data obtained by arranging a plurality of pixels in parallel in a predetermined number of line segments formed by arranging a predetermined number of pixels in parallel in a time axis direction. Moving image decoding means for decoding the compressed moving image data with respect to the compressed moving image data obtained as described above, and the order of arrangement of the still image data decoded by the moving image decoding means. And a line recognizing means for recognizing the order and direction of each of the still image data, and all the still image data are placed on the same plane based on the order and direction recognized by the line recognizing means. The shape of a folded book formed by folding a single rectangular surface formed by connecting the line segments at equal intervals to a predetermined number of surfaces which is a multiple of the number of line segments included in the still image data. Along the line so that Blocking means for rearranging all the line segments into a rectangular parallelepiped block formed by folding back, and based on the blocks obtained by the blocking means, the surfaces are folded by the blocking means. Moving image output means for outputting moving image data, wherein each of the line segments arranged in the same direction is regarded as still image data, and the arrangement of the still image data in the block is arranged in the time axis direction. A moving picture decoding / conversion device, comprising: 5. An apparatus for receiving a secret communication or broadcast which is difficult to be peeped, wherein said arrangement recognizing means uses a device for continuously transmitting said compressed moving image data, whereby the recognition technique is remotely controlled. The moving picture output means according to claim 4, wherein the moving picture output means is means for outputting moving picture data by updating a signal representing a still picture at predetermined time intervals. Decoding conversion device. 6. A pseudo stillness instruction means for receiving a pseudo stillness instruction during output of moving image data, wherein said moving image output means updates a signal to an image display device representing a still image at predetermined time intervals. Means for outputting moving image data in a form, and when the pseudo still instruction means receives a pseudo still instruction, reverse to slow playback based on the moving image data being output at that time. The moving picture decoding / conversion apparatus according to claim 4 or 5, wherein the means for outputting a signal to the image display apparatus so that the reproduction is alternately repeated. 7. A new rectangular parallelepiped by connecting a plurality of the moving picture decoding / converting apparatuses according to claim 4 and rectangular parallelepiped moving image data output from these apparatuses so that their faces are adjacent to each other. Means for obtaining moving image data and outputting the obtained moving image data. 8. A program for causing a computer to execute the functions of the moving picture decoding / conversion device according to claim 4 and moving image data compressed by the moving image compression / conversion device according to claim 1 to 3. And a computer-readable recording medium that records at least one of the following.