JPH07112266B2 - Disturbance signal insertion device for distribution video software and reproduction device for distribution video software with interference signal inserted - Google Patents

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention drastically reduces the appreciation value as video software in a general reproducing apparatus by inserting an interfering signal, but it enables normal reproduction by a specific reproducing apparatus such as a video theater. and it relates to the inserted re NamaSo location distribution for the video software was of the disturbing signal interpolation NyuSo location and interfering signals for distribution for the video software.

[0002]

2. Description of the Related Art There are roughly two types of software copy guard systems recorded on VTR tapes. One of them is a so-called video software by a small VTR for commercial use, which is a system in which reproduction can be performed by a general consumer reproduction device, but the reproduced image cannot be recorded. Is used for. The other one is a method in which reproduction can be performed only by a specific reproduction device, and it is impossible to reproduce a satisfactory image without using a device for canceling copy guard.

Many methods have been proposed for this purpose, but the main ones are as follows.

(1) A method in which the number of scanning lines of a television, the number of frames per second, or the recording pattern of the video table itself is produced by a method different from the currently used television method.

(2) A method in which an interfering signal is added to the synchronizing signal and a device for removing this interfering signal is built in the reproducing device.

(3) The video signal is digitized and written to the frame memory, and when reading from the memory, the VTR tape is recorded after reading in a different order from the writing, and the frame memory is also used for reproduction. A method of converting to normal video by writing to the frame memory in accordance with the reading during recording.

[0007]

In the above-mentioned method (1), conventional equipment cannot be used not only for producing the corresponding software but also for the reproducing apparatus. Also, in the method of (2), the reproduction by the general consumer reproduction device can be prevented, but the reproduction is prevented when the reproduction is performed by the broadcasting or professional reproduction device having the function of replacing the sync signal. I can't do it. Further method is a very effective method of (3), have been used in the current Mamoru scrambling star broadcasting, because the system is complicated, the cost becomes expensive.

In view of the above situation, the present invention inserts an interfering signal into distribution video software and distributes the distribution video software.
The purpose of the present invention is to make it possible to easily and inexpensively perform reproduction with the interfering signal from the tape removed.

[0009]

Device for inserting a disturbance signal to the video software for distribution SUMMARY OF THE INVENTION is larger picture than frame number of movie film that number of fields transmitted per unit of time is fed per unit time A telecine device that outputs a signal and a signal of a field in which an interference signal should be inserted, a telop device that outputs an interference signal, and a telecine device that switches between the signals of the field in which the interference signal is to be inserted. A switching device that selectively outputs a video signal from the device or an interference signal from the telop device,
Are those formed by comprising a recording apparatus for recording a video signal and interference signal from the switch, also more video signals than the number of frames of the movie film in which the number of fields to be sent per unit time is sent per unit time A telecine device that outputs a signal of a field in which an interfering signal should be inserted together with the output,
A code generator for outputting a code of a field for inserting a disturbing signal based on a signal of a field for inserting a disturbing signal from the telecine device, and a code from the code generator for recording a video signal from the telecine device first a recording device for obtaining a master software and recorded, and a reproducing apparatus for outputting a video signal to reproduce the master software, and telop device that outputs an interference signal, the interference from the video signal output from the reproduction apparatus A code detecting device for detecting a code of a field in which a signal is to be inserted, and a switching device for switching by output from the code detecting device and selectively outputting a video signal from the reproducing device or an interfering signal from a telop device. , A second recording device for recording the video signal and the interfering signal from the switching device.

[0010] apparatus for reproducing an inserted flow for the video software interfering signal reproduces the flow-class video software,
A video reproducing device that outputs a video signal and an interfering signal, a frame of the interfering signal is detected based on the signal from the video reproducing device, and a signal of a field in which the interfering signal is inserted is output and the video signal and the interfering signal are output. An interfering frame signal detecting device for outputting, a frame memory for storing the video signal and the interfering signal sent through the interfering frame signal detecting device, and a field in which the interfering signal from the frame signal detecting device is inserted. A frame memory control signal generator for supplying a frame memory control signal to the frame memory for removing an interfering signal based on the signal of FIG. 1 and inserting a video signal in the field where the interfering signal is removed. -It is equipped with a display for displaying the video signal from the memory.

[0011]

Since the interfering signal is inserted in a predetermined field with respect to the distribution video software, the copy of the video software can be guarded, and the interfering signal can be easily provided by a specific reproducing apparatus such as a theater. It can be played with the removed.

[0012]

Principles of the Invention The television system currently used in many countries including Japan and the United States is called NTSC system, which has 525 scanning lines and 30 frames per second. Adopts an interlace system in which the number of scanning lines is divided into two fields of odd and even, each of which is 262.5. That is, 30 frames per 60 fields (accurately 29.97 frames, 5
Although it is 9.94 fields, it is abbreviated as 30 frames and 60 fields hereinafter . ) Is transmitted by.

When converting a projection film photographed at a rate of 24 pixels per second into software in which a television signal of 60 fields per second is input, two projections of the projection film are used for a television because of the relationship of 24: 60 = 2: 5. It is necessary to convert the video signal into 5 fields in the video software.
This number conversion will be described with reference to FIG. That is, the first first pattern of the projection film A is converted into two fields of the video signals 1 and 1a in the video software B for television, and the second pattern is converted into three fields of the video signals 2, 2a and 2b. ing. Similarly, the third pattern of the projection film A is converted into the video signals 3, 3a, and the fourth pattern is converted into the video signals 4, 4a, 4b, and the same process is repeated thereafter, and the odd pattern of the projection film A is a two-field video signal. 3,3a, 5,5a, 7,7
a ..., the even-numbered pattern is a video signal 4, 3a of three fields,
4b, 6, 6a, 6b, 8, 8a, 8b ... The conversion method includes a mechanical method and an electronic method, and in each case, as described above, each pattern of the projection film A is alternately converted into a projection signal of 2 fields and a projection signal of 3 fields. This is called 2-3 conversion. Here, the video signals 2 and 2b and 4 and 4b are the same video signal, and the odd-even relationship of the scanning lines is also satisfied. Therefore, the video signals 2b and 4b can be replaced by 2 and 4.

Next, the fields of the video signals 2b, 4b, 6b, 8b, ... Of the software B for television shown in FIG. 5 are shown in FIG.
Interfering signal shown in (for example, one that does not show anything) 2
By replacing with b ', 4b', 6b ', 8b' ..., a general VTR reproducing device without an interference canceller can generate an interference signal of 1 field in 5 fields, which can significantly reduce the appreciation value of the work. it can.

FIG. 7 shows the disturbing signals 2b ', 4b', 6b ',
The principle of removing the interfering signals 2b ', 4b', 6b ', 8b' ... from the television software B to which 8b '... The reproducing apparatus has a memory for one frame, so that the interference signals 2b ', 4b', 6b ', 8b'
It is a mechanism to complement the fields of. That is, for the fields replaced with the interfering signals 2b ', 4b', 6b ', 8b' ..., the non-interfering video signals 2, 4, 6, 8 stored in the memory without using the reproduced video. By replacing with ... and playing back, you can get a video that does not interfere with viewing.

FIG. 8 shows an example applied to a clear vision (EDTV). A reproducing apparatus uses a memory for two frames, and odd fields and even fields are alternately read for each scanning line to obtain 525. I am getting a 60-frame non-interlaced television image. Also in this case, the disturbing signals 2b ′, 4b ′, 6 during reproduction.
The interfering signals 2b ', 4b', 6b ', 8 are obtained by alternately reading the video signals 2 and 2a, 4 and 4a for each scanning line without using the field in which b', 8b '... Is inserted.
It is possible to obtain a clear vision signal with b '... removed.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of an apparatus for inserting an interfering signal into a field of video software when electrically converting a projection film to produce video software.

In the figure, 11 is a telecine device for converting a 35 mm or 16 mm projection film into a video signal for television. The telecine device 11 converts a projector part for normally projecting a film and an electric signal. The camera part for doing is integrated. The conversion of 24 pixels / sec of the projection film into the video signal 60 field for television, that is, 2-3 conversion is performed in this portion, and the video signals 1, 1a, 2, 2a of FIGS. , 2
b, 3, 3a ... (represented by the general formula, n, na, n + 1,
(N + 1) a, (n + 1) b (n is an odd number) can be output.

Reference numeral 12 denotes the disturbing signals 2b ', 4 shown in FIGS.
b ', 6b' ... (represented by the general formula, (n + 1) b ' (n
Is a odd number)), and 13 is a video signal n, na, n + 1, (n +) from the telecine device 11.
1) a, (n + 1) b or a switching device adapted to receive the interference signal (n + 1) b ' from the telop device 12, and is switched by the signal 14 of the (n + 1) b' field from the telecine device 11. It is like this. Again 15
Is a VTR that records the output 16 from the switch 13, and 17
Is video software 17 for distribution.

When the distribution video software 17 is created by the above-mentioned device, the telecine device 11 is constantly sending the video signals n, na, n + 1, (n) for the television.
+1) a and (n + 1) b are output, provided from the switch 13 as the output 16 to the VTR 15 and recorded. The 'reaches the field, from the telecine apparatus 11 (n + 1) b' field of the video signal is (n + 1) b switch 13 by the field of the signal 14 is Kirikaeri, interference signals from the telop device 12 (n + 1) b ' Is given to the VTR 15 as an output 16 from the switch 13 and recorded. Thus, in the VTR 15, the video signals n, na, n +
1, (n + 1) a, (n + 1) b and interference signal (n + 1)
Interfering signal (n + 1) by sequentially recording b '
The distribution video software 17 containing b'is completed. Also, the distribution video software 17 has an interference signal (n + 1) b '.
Since it has been inserted, it cannot be a product even if copied,
Therefore, the interference signal (n + 1) b ′ functions as a copy guard.

[0022] Figures 2 and 3, as well as in Example 1, in producing a video software electrically convert movie film, apparatus for inserting an interfering signal to the field of video software 2 is another embodiment of the present invention.
The master software is manufactured by the device shown in FIG. 3, and the master software is used for distribution video software 1 by the device shown in FIG.
I am trying to make 7.

In FIG. 2, 18 is a telecine device 11 and a VTR.
(N + from the telecine device 11)
1) Controlled by the signal 14 of the b'field, the VTR
A code generator 19 for giving a code 20 indicating the (n + 1) b ' field of the video signal to the reference numeral 15. Reference numeral 19 is master software completed by being recorded in the VTR 15.

In FIG. 3, reference numeral 21 reproduces the master software 19, and the reproduced video signals n, na, n + 1, (n +
1) a, telop device for outputting (n + 1) V TR, 22 the interference signal for outputting b (n + 1) b ' , 23
Are video signals n, na, n + output from the VTR 21.
1, (n + 1) a, (n + 1) b and interfering signal (n +
1) a code detecting device for detecting the code 20 (see FIG. 2 ) in the (n + 1) b ' field from b' , 24 is switched by an output 25 from the code detecting device 23,
21 from the video signals n, na, n + 1, (n + 1) a,
(N + 1) b or interference signal from telop device 22
(N + 1) as an output 26 a b 'is a switch which gives the V TR27.

The master software 19 is executed by the device shown in FIG.
In the case of manufacturing, the video signals n, na, n + 1, (n + 1) a, and (n + 1) b are sequentially supplied from the telecine device 11 to the VTR 15 and the telecine device 11
The signal 14 of the (n + 1) b ' field of the (n + 1) b' field is given to the code generator 18, and the code generator 18 gives the code 20 indicating the (n + 1) b ' field of the video signal to the VTR 15. . Thus, in the VTR 15, the video signals n, na, n + 1, (n
The code 20 indicating the (n + 1) b ' field is recorded together with +1) a and (n + 1) b , and the master software 19 is completed.

When the distribution video software 17 is produced by the device shown in FIG. 3, the master software 19 produced by the device shown in FIG. 2 is reproduced by the VTR 21 and reproduced video signals n, na, n + 1, (n + 1)
a and (n + 1) b are output from the switch 24 as VT
The video signal n, na, n which is given to the R27 and recorded, and reproduced and outputted in the code detecting device 23.
+1, (n + 1) a, (n + 1) b to (n + 1) b '
The field code 20 (see FIG. 2) is detected and supplied to the switch 24, and the switch 24 switches to provide the interference signal (n + 1) b ′ from the telop device 22 to the VTR 27 as the output 26 from the switch 24. It is recorded. Thus, in the VTR 27, the video signals n, na, n +
1, (n + 1) a, (n + 1) b and interference signal (n + 1)
Interfering signal (n + 1) by sequentially recording b '
The distribution video software 17 containing b'is completed.

In the case of the present embodiment, the copying of the distribution video software 17 can be prevented as in the above-mentioned embodiment, and since no disturbing signal is recorded in the master software 19, the distribution video software 17 cannot be copied. Although it takes time and effort to produce, the master software 19 has an advantage that it can be used as video software when copy guard is not required.

FIG. 4 shows an embodiment of an apparatus for reproducing the distribution video software 17 in which the interfering signal is recorded, which is manufactured by the apparatus shown in FIG. 1 or FIGS. 2 and 3.

In the figure, numeral 28 reproduces the distribution video software 17, and video signals n, na, n + 1, (n + 1) a,
(N + 1) b and the interfering signal (n + 1) b ' are sequentially output, and the reproducing VTR 28 outputs 3 from the reproducing VTR 28.
0 of the video signals n, na, n + 1, (n + 1) a,
(N + 1) b is passed as it is, and the interference signal (n + 1)
For b ′ , the (n + 1) b ′ frame signal detection device detects the frame signal ( (n + 1) b ′ frame signal), and 31 is the video signal n, na, n + 1, (n + 1 )
a, (n + 1) b and the disturbing signal (n + 1) b ' as well as (n
+1) b 'frame memory to the memory frame signal, 32 (n + 1) b' from the frame signal detection unit 29 (n + 1) b 'frame memory control signal to the frame memory 31 based on the field of the signal 33 A frame memory control signal generator 34 is provided, and 35 is a video signal n, na, n + 1, (n +) from the frame memory 31.
1) A display for displaying a and (n + 1) b as an image.

The distribution video software 17 is a VTR for reproduction.
Video signals n, na, n + 1, (n +
1) a, (n + 1) b or the interfering signal (n + 1) b '
It is given to the (n + 1) b ′ frame signal detection device 29. Thus, the video signals n, na, n + 1, (n + 1)
a, (n + 1) b and the interfering signal (n + 1) b ′ are (n +
1) The frame passing through the b'frame signal detector 29
The disturbing signal (n + 1) b ' is given to the memory 31.
Is detected by the (n + 1) b ′ frame signal detection device 29, and the signal 33 of the (n + 1) b ′ field is (n +
1) The frame memory control signal generator 32 is supplied from the b'frame signal detecting device 29, and the frame memory control signal generator 32 controls the frame memory based on the signal 33 of the (n + 1) b ' field. Signal 34
And the frame memory control signal 34 is provided to the frame memory 31. Therefore, in the frame memory 31, the (n + 1) b ′ field in which the disturbing signal (n + 1) b ′ is recorded is not read, and (n
+1) b'frame signal instead of interference signal (n +
1) Video signal of (n + 1) frame without b '
(N + 1) is read out and given to the display 35. Therefore, in the display 35, the interference signal (n +
1) A complete video without b'is reproduced.

In the above-described embodiment of the present invention, the insertion of the interfering signal into the distribution video software and the reproduction without the interference signal from the distribution video software can be performed easily and inexpensively by a simple means. it can.

The present invention is not limited to the above-mentioned embodiment, and the place where the interfering signal is put may be any place as long as it is difficult to see when reproducing with a general consumer reproducing apparatus. In addition to being a VTR, a VDR can be used as a recording device, and a device other than a VTR for reproduction can be used as a video reproducing device.
Needless to say, various changes can be made without departing from the scope of the present invention.

[0033]

According to the inserted re NamaSo location distribution for the video software was of the disturbing signal interpolation NyuSo置並the interfering signal for distribution for the video software present invention, by simple means, for distribution Video -It has an excellent effect that it is possible to prevent copying of the software and insert an interfering signal into the distribution video software and reproduce without removing the interfering signal from the distribution video software easily and inexpensively. obtain.

[Brief description of drawings]

1 is a block diagram of an embodiment of the disturbing signal interpolation NyuSo location for distribution for the video software of the present invention.

Figure 2 is a block diagram of another embodiment of the disturbing signal interpolation NyuSo location for distribution for the video software of the present invention, the master
It is a block diagram at the time of manufacturing software.

There block diagram of another embodiment of the disturbing signal interpolation NyuSo location for distribution for the video software [3] the present invention and is a block diagram of a case of fabricating a flow for video software from the master software.

FIG. 4 is a distribution video in which an interference signal of the present invention is inserted.
It is a block diagram of one embodiment of a re NamaSo location software.

FIG. 5: Projection film projected at 24 times per second 6 times per second
It is a principle diagram which shows the principle at the time of converting into the video signal of the video software of 0 field televisions.

FIG. 6 is a principle diagram showing a principle of inserting an interfering signal into a field of a video signal of video software.

FIG. 7 is a principle diagram showing a principle in the case where an interfering signal is removed from video software in which an interfering signal is inserted to obtain a video signal without the interfering signal.

FIG. 8 is a principle diagram showing the principle of removing a disturbing signal from video software in which a disturbing signal is inserted to obtain a clear vision signal as a video signal having no disturbing signal.

[Explanation of symbols]

1, 1a, video signal 2, 2a, 2b video signal 2b 'interference signal 3, 3a, video signal 4, 4a, 4b video signal 4b' interference signal 5, 5a, video signal 6, 6a, 6b video signal 6b 'interference Signal 7, 7a, video signal 8, 8a, 8b video signal 8b 'interfering signal 11 telecine device 12 telop device 13 switcher 14 (n + 1) b' field signal (field signal into which interfering signal should be inserted) 15 VTR ( 1st recording device 17 Video software for distribution 18 Code generator 19 Master software 20 Code 21 V TR ( reproducing device) 22 Telop device 23 Code detecting device 24 Switching device 25 Output 27 V TR ( second recording device) ) 28 playback VTR (video playback device) 29 (n + 1) b ′ frame signal detection device (interfering frame signal detection device) 31 Frame memory 32 Frame memory control signal generator 33 (n + 1) b ' field signal (field signal with interfering signal inserted) 34 frame memory control signal 35 display A projection film B video software n, na, n + 1, (n + 1) a, (n + 1) b video signal (n + 1) b ′ interference signal

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04N 5/253 5/262 5/765 7/167 H04N 7/167 Z 8224-5D G11B 27/02 C

Claims (3)

[Claims] 1. A telecine device that outputs a video signal in which the number of fields transmitted per unit time is greater than the number of projection films transmitted per unit time and a signal in a field in which an interfering signal should be inserted. A telop device that outputs an interfering signal, and a switcher that switches the interfering signal from the telecine device according to a field signal to be inserted, and selectively outputs the video signal from the telecine device or the interfering signal from the telop device. An interfering signal inserting device for distribution video software, comprising a recording device for recording a video signal and an interfering signal from the switching device. 2. A telecine device that outputs a video signal in which the number of fields transmitted per unit time is larger than the number of projection films transmitted per unit time and a signal of a field in which an interference signal should be inserted is output. A code generator for outputting a code of a field for inserting a disturbing signal based on a signal of a field for inserting a disturbing signal from the telecine device, and a code from the code generator for recording a video signal from the telecine device first a recording device for obtaining a master software and recorded, and a reproducing apparatus for outputting a video signal to reproduce the master software, and telop device for outputting interference signals from the output video signal from said reproducing apparatus a code detecting device for detecting a field code to be inserted interfering signals, Ri switched by the output from said code detection device, the re Distribution characterized the switching device for selectively outputting interference signals from the video signal or telop device from the device, to become a second recording device for recording the video signal and the interference signal from the switch Interference signal insertion device for video software for home use. 3. A video reproducing device for reproducing distribution video software and outputting a video signal and an interfering signal, a frame of the interfering signal is detected based on the signal from the video reproducing device, and the interfering signal is inserted. An interfering frame signal detecting device which outputs a video signal and an interfering signal together with a field signal, and a frame memory which stores the video signal and the interfering signal sent through the interfering frame signal detecting device, A frame memory control is performed in the frame memory to remove an interfering signal based on the signal of the field in which the interfering signal is inserted from the frame signal detecting device and to insert a video signal in the field from which the interfering signal is removed. A frame memory control signal generator for giving a signal and a display for displaying a video signal from the frame memory are provided. Inserted for distribution video software reproducing apparatus of the disturbing signal, characterized in Rukoto.