JP2002314969A - Video data reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video data reproducer capable of facilitating countermeasures to a plurality of encipherment systems by providing an external cipher decoding module and an internal cipher decoding module. SOLUTION: This video data reproducer is provided with an external cipher decoding module and an internal cipher decoding module for facilitating countermeasures to a plurality of encipherment systems and scramble judging parts connected to the outputs of the cipher decoding modules so that the success/failure of scramble release can be detected, and that the video data whose scramble release is successful can be outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video data reproducing apparatus, and more particularly to a video data reproducing apparatus for decrypting video data from each broadcast source, which has been encrypted by a different encryption method in digital broadcasting, by a plurality of decryption modules. And a video data reproducing apparatus for decoding and outputting video data.

[0002]

2. Description of the Related Art In recent years, digital broadcasting has begun worldwide.
Development of a video data reproducing apparatus (usually called a set-top box (STB)) for receiving these digital broadcasts is also progressing.

In general, digital broadcasts are scrambled for conditional access at the time of transmission so that only the subscriber can view the digital broadcasts, and the scramble is canceled by a module inside the video data reproducing apparatus at the time of reception. However, the scramble system differs for each broadcaster, and the manufacturer must develop a plurality of video data reproducing devices capable of decoding video data encrypted by the respective scramble systems. FIG. 7 is a block diagram showing the configuration of a conventional video data reproducing apparatus having a decryption module inside. In the figure, reference numeral 100 denotes a video data processing terminal for converting video data into visible information;
Reference numeral 00 denotes an internal decryption module that decrypts encrypted video data, and 4 denotes a video decryption unit that decrypts encoded video data.

In a normal video data reproducing apparatus, for example, a tuner section for receiving broadcast data from a satellite, a terrestrial wave, or a cable, and an audio data reproducing section for reproducing compressed audio data. Although these components are required, they are not directly related to the present invention, and therefore description thereof is omitted.

Next, the operation of the conventional video data reproducing apparatus will be described. For satellite, terrestrial and cable digital broadcasting, video data and the like are transferred using MPEG (Moving Pic).
After converting the data into MPEG video data by a compression method such as “Tur Experts Group”, the data is scrambled and transmitted as necessary. The presence or absence of scrambling of the video data is included in the video data as attribute information.

[0006] These MPEG standards are described in general books such as "Latest MPEG Textbook" (ASCII Co., Ltd.), and the description is omitted here.

[0007] MPEG video data received from a satellite, terrestrial wave or cable is transmitted to an internal decryption module 30.
0, and if the MPEG video data is scrambled, descrambling is performed. If the video data has not been scrambled, the video data is directly input to the video decoding unit 4 in the next stage. The video decoding unit 4 performs MPEG playback and sends the decoded video data to a video display device such as a TV.

[0008]

However, when using the conventional video data processing terminal, if the user wants to change the broadcasting company, the user needs to replace the video data processing terminal, which is costly. Also, if the encryption method is broken by a third party, the broadcaster will need to collect and replace the video data processing terminals of all users, resulting in a huge cost burden. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has an external decryption module and an internal decryption module. Aim.

[0009]

According to a first aspect of the present invention, there is provided a video data reproducing apparatus.
In a video data playback device having a video data processing terminal that converts received video data into visible information and outputs the same,
The video data processing terminal is a receiving video data output branching unit that branches and outputs the received video data, and decrypts the encrypted video data output from the receiving video data output branching unit, and is decrypted. An internal decryption module for outputting the received video data, a first terminal to which an output from the received video data output branch is input, and a removably connected between the first terminal and the second terminal. An external decryption module that decrypts encrypted video data input from the first terminal and outputs decrypted video data to the second terminal; and a video output by the internal decryption module. A video data input switching unit for selecting and outputting one of data and video data output from the second terminal; and a video data input unit received from the video data input switching unit. A video decoding unit for decoding and outputting,
Detecting whether or not the external decryption module is connected, and detecting that the external decryption module is not connected, if the external decryption module is not connected, the video data is selected to select video data output from the internal decryption module. A connection detecting unit that instructs the data input switching unit to instruct the video data input switching unit to select video data output from the second terminal when detecting that the external decryption module is connected; It is provided with.

A video data reproducing apparatus according to claim 2 of the present invention, further comprising a video data processing terminal that converts received video data into visible information and outputs the visual information. Is a receiving video data output branching unit that branches and outputs received video data, and a transmission source of the encrypted video data output from the receiving video data output branching unit based on a user's receiving contract. An internal decryption module that authenticates use between the two, decrypts the encrypted video data, and outputs decrypted video data, and an output from the reception video data output branch unit that is input. 1 terminal and a source of encrypted video data input from the first terminal detachably connected between the first terminal and the second terminal. An external decryption module that decrypts the encrypted video data and outputs decrypted video data to the second terminal, and an internal decryption module that authenticates use based on the receiving contract of A video data input switching unit that selects and outputs one of video data to be output and video data output from the second terminal; and a video that decodes and outputs video data received from the video data input switching unit. A decryption unit, a use authentication result from the external decryption module and the internal decryption module is input, and when the use of the internal decryption module is authenticated by the transmission source of the video data, the internal decryption module Instruct the video data input switching unit to select the video data to be output,
An authentication result receiving unit that instructs the video data input switching unit to select video data output from the second terminal when the use of the external decryption module is authenticated by the transmission source of the video data. It is provided.

According to a third aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. A receiving video data output branching section for branching and outputting received video data, and an internal section for decrypting encrypted video data output from the receiving video data output branching section and outputting decrypted video data A decryption module, a first terminal to which an output from the received video data output branch is input, and a first terminal detachably connected between the first terminal and the second terminal. An external decryption module that decrypts input encrypted video data and outputs decrypted video data to the second terminal; and the internal decryption module A video data input switching unit that selects and outputs one of video data to be output and video data output from the second terminal; and a video that decodes and outputs video data received from the video data input switching unit. A decryption unit and an output of the internal decryption module are input, and it is determined whether or not the scramble is released.If it is determined that the scramble is released, the video data output from the internal decryption module is determined. A first instruction to instruct the video data input switching unit to select
And the scramble determination unit of the above, the output from the second terminal is input, it is determined whether or not the scramble is released, if it is determined that the scramble is released,
A second scramble determining unit that instructs the video data input switching unit to select video data output from the second terminal.

According to a fourth aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. A receiving video data output branching unit for branching and outputting received video data, and decrypting encrypted video data output from the receiving video data output branching unit and outputting decrypted video data An internal decryption module comprising: a first descrambling unit; and a first descrambling determination unit that receives attribute information of video data from the first descrambling unit and determines success or failure of descrambling; A first terminal to which an output from the reception video data output branching unit is input, and a first terminal and a second terminal. Performs decryption of encrypted video data inputted from the first terminal connected to the stationary,
A second descrambler for outputting the decrypted video data to the second terminal, and a second descrambler for receiving attribute information of the video data from the second descrambler and determining success or failure of the descrambling. Receiving the determination results from the external descrambling determination unit having the descrambling determination unit and the first descrambling determination unit and the second descrambling determination unit, and selecting the output from the module that succeeds in descrambling. A scramble state monitor instructing the video data input switching section, and selecting the decrypted video data from the first descrambler or the second terminal according to the instruction from the scramble state monitor. The video data input switching unit and the video received from the video data input switching unit It is obtained by a video decoding unit decodes and outputs over data.

According to a fifth aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. A video data selection unit that selects and outputs video data input from a plurality of input terminals, and decrypts encrypted video data output from the video data selection unit and outputs decrypted video data An internal decryption module, a first terminal to which an output from the video data selection unit is input, and a first terminal detachably connected between the first terminal and the second terminal. An external decryption module that decrypts the input encrypted video data and outputs decrypted video data to the second terminal; And a first scramble determination unit for determining whether or not the descrambling of the internal decryption module has succeeded, and a first scramble determination unit for decrypting and outputting video data received from an output of the internal decryption module. A video decryption unit, a second scramble determination unit that receives the output of the second terminal as input, and determines whether or not the descrambling of the external decryption module is successful; and a second scramble determination unit that receives the output from the second terminal. A second video decoding unit that decodes and outputs the decoded video data, a video synthesis unit that synthesizes and outputs video data output from the first video decoding unit and the second video decoding unit, The determination results from the first scramble determination unit and the second scramble determination unit are input, and the first scramble determination unit succeeds in descrambling. If it is determined, the video synthesizing unit is controlled to display the output of the first video decoding unit, and if it is determined in the second scramble determining unit that the descrambling is successful, And controlling the video synthesizing unit to display the output of the second video decoding unit. If the first scrambling determination unit or the second scrambling determination unit determines that the descrambling has failed, A control unit that controls the video data selection unit so that video data input to the decryption module or the internal decryption module is exchanged.

According to a sixth aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. A video data selection unit that selects and outputs video data input from a plurality of input terminals, and decrypts encrypted video data output from the video data selection unit and outputs decrypted video data A first descrambling unit that performs
Receiving the attribute information of the video data from the descrambling unit, and determining the success or failure of the descrambling.
An internal decryption module having a descrambling determination unit, a first terminal to which an output from the video data selection unit is input, and a removably connected between the first terminal and the second terminal. A second descrambling unit for decrypting encrypted video data input from the first terminal and outputting decrypted video data to the second terminal, and the second descrambling unit And an external decryption module having a second descrambling judgment unit for judging success or failure of descrambling, and decoding the video data received from the output of the first descrambling unit. A first video decoding unit for decoding and outputting video data received from an output of the second descrambling unit through the second terminal. A second video decoding unit for the first
A video synthesizing unit for synthesizing and outputting video data output from the video decoding unit and the second video decoding unit;
Receiving the determination results from the descrambling determination unit and the second descrambling determination unit, and displaying the output of the first video decryption unit when the external decryption module succeeds in descrambling. Controlling the video synthesis unit, and, when the internal decryption module succeeds in descrambling, controlling the video synthesis unit to display the output of the second video decryption unit;
When the external decryption module or the internal decryption module fails in descrambling, a control unit that controls the video data selection unit to replace video data input to the external decryption module or the internal decryption module. It is provided with.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail. For example, satellite, terrestrial, and broadcast data received from a cable, which are provided in a normal video data reproducing apparatus, are received. Components such as a tuner unit for reproducing the compressed audio data and an audio data reproducing unit for reproducing the compressed audio data are not directly related to the present invention, and therefore the description thereof is omitted.

(Embodiment 1) A video data reproducing apparatus according to an embodiment of the present invention will be described as Embodiment 1 with reference to FIG. FIG. 1 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 100 denotes a video data processing terminal for converting video data into visible information, and 200 decodes encrypted video data which is removably connected between a first terminal and a second terminal. External decryption module, 3
00 is an internal decryption module for decrypting encrypted video data, 1 is a video data output branching unit, 2 is a video data input switching unit, 4 is a video decoding unit, and 5 is a connection detection unit.

Hereinafter, the operation of the video data reproducing apparatus according to the first embodiment configured as described above will be described. MPE received from satellite, terrestrial or cable
The G video data is transmitted from the video data output branch unit 1 to the external decryption module 200 and the internal decryption module 30.
Sent to 0. M descrambled by the external decryption module 200 and the internal decryption module 300
The PEG video data is input to the video data input switching unit 2, one of which is selected by the instruction of the connection detection unit 5, and input to the video decoding unit 4.

The connection detecting unit 5 includes the external decryption module 2
00 is connected to the video data processing terminal 100, and if the external decryption module 200 is connected, the video data input switching unit 5 is instructed to select the output of the external decryption module 200. When the external decryption module 200 is not connected, the video data input switching unit 5 is instructed to select the output of the internal decryption module 300. The output of the video data input switching unit 2 is sent to the video decoding unit 4 and MPEG-decoded,
The decoded video data is sent to a video display device such as a TV or a recording device that records image data.

Examples of the connection detecting unit 5 include, for example,
There is a method of mounting an external decryption module as a PCMCIA card (Reference: PCMCIA standard rev)
2.1). The PCMCIA card has a pin in which the signal line of the connector is short-circuited in the card, and when the card is inserted, the pin is short-circuited to detect the card insertion. The PCMCIA card has a configuration memory that describes the attributes of the card. By registering an external decryption module as a card type in this configuration memory, it is possible to know that the inserted card is an external decryption module. Can also.

As described above, the first embodiment can cope with the scrambling method of a plurality of broadcast sources by providing the connection detection unit for the external decryption module, the internal decryption module, and the external decryption module. In addition, by making it easy to replace the external decryption module, when the broadcaster is changed or the scramble is broken by a third party, the video data processing terminal itself does not need to be replaced, and the cost is reduced. There is a merit that can be reduced.

(Embodiment 2) A video data reproducing apparatus according to a second embodiment of the present invention will be described as a second embodiment with reference to FIG. FIG. 2 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 2 of the present invention.

In the figure, reference numeral 100 denotes a video data processing terminal for converting video data into visible information, and 200 decodes encrypted video data which is removably connected between a first terminal and a second terminal. External decryption module, 3
00 is an internal decryption module for decrypting encrypted video data, 1 is a video data output branching unit, 2 is a video data input switching unit, 4 is a video decoding unit, and 6 is an authentication result receiving unit. The operation of the video data reproducing apparatus according to the second embodiment configured as described above will be described below.

The MPEG video data received from a satellite, a terrestrial wave or a cable is sent from the video data output branch unit 1 to the external decryption module 200 and the internal decryption module 300. External decryption module 20
0 and the MPEG video data descrambled by the internal decryption module 300 are input to the video data input switching unit 2.

The authentication result receiving unit 6 receives the authentication result from the external decryption module 200 and the internal decryption module 300, and instructs the video data input switching unit 2 to select an output result from the authenticated module. .

The authentication is performed between the external decryption module 200 and the internal decryption module 300 and the transmission source of the video data based on the user's receiving contract (reference: SCTE DVS 301 "OpenCable Copy Protection Sy").
stem Specification "SOCIETY OF CABLE TELECOMMUNICA
TIONS ENGINEERS, INC. Digital Video Subcommitte
e). If the decryption module and the video data processing terminal are authorized, the corresponding decryption module is authenticated. However, in this embodiment, it is assumed that the user contracts with only one video data transmission source.

The output of the video data input switching unit 2 is sent to the video decoding unit 4 and MPEG-decoded, and the decoded video data is sent to a video display device such as a TV or a recording device. As described above, the video data reproducing apparatus according to Embodiment 2 of the present invention includes the external decryption module, the internal decryption module, and the authentication result receiving unit,
It can support the scrambling method of a plurality of broadcasting sources. Also,
There is an advantage that the authenticity of the reception can always be confirmed by the authentication means. Of course, by making it easy to replace the external decryption module, there is also an advantage that the video data processing terminal itself does not need to be replaced when the broadcaster is changed or the scramble is broken by a third party. is there.

(Embodiment 3) A video data reproducing apparatus according to a third embodiment of the present invention will be described as a third embodiment with reference to FIG. FIG. 3 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 3 of the present invention. In the figure, reference numeral 100 denotes a video data processing terminal which converts video data into visible information, and 200 decodes encrypted video data which is removably connected between a first terminal and a second terminal. An external decryption module, 300 is an internal decryption module for decrypting encrypted video data, 1 is a video data output branching unit,
2 is a video data input switching unit, 4 is a video decoding unit, 71 is a first scramble determination unit, and 70 is a second scramble determination unit.

The operation of the video data reproducing apparatus according to the third embodiment configured as described above will be described below. MPEG video data received from a satellite, a terrestrial wave, or a cable is sent from the video data output branch unit 1 to the external decryption module 200 and the internal decryption module 300. MP descrambled by the external decryption module 200 and the internal decryption module 300
The EG video data is input to the video data input switching unit 2,
The selection is made according to an instruction from the first scramble determination unit 71 and the second scramble determination unit 70.

The first scramble determination unit 71 determines whether or not the output of the internal decryption module 300 has been descrambled. If the output has been descrambled, the video data is selected so as to select the output of the internal decryption module 300. An instruction is given to the input switching unit 2.

The second scramble determination unit 70 determines whether or not the output of the external decryption module 200 has been descrambled. If the output has been descrambled, the second scramble determination unit 70 selects the output of the external decryption module 200. It instructs the video data input switching unit 2.

The determination as to whether or not the descrambling has been performed can be performed by verifying the format or contents of the descrambling video data. For example, if the descrambled video data is an MPEG stream, it can be detected by detecting a bit string defined as a transport stream (TS) header. When the descrambling has been performed, the output of the decryption module is an MPEG TS stream, so that TS hea
If der can be detected, it can be determined that descrambling has been performed. If the descrambling fails, the output of the decryption module does not return to the MPEG format.
S header is not detected.

In the third embodiment, it is assumed that the user contracts with only one source of the video data, and does not use two decryption modules at the same time. The output of the video data input switching unit 2 is sent to the video decoding unit 4 and MPEG-decoded, and the decoded video data is
Etc. to the video display device.

As described above, in the video data reproducing apparatus according to the third embodiment of the present invention, the video data can be reproduced by using the effective decryption module by providing the scramble determining section.

(Embodiment 4) A video data reproducing apparatus according to a fourth embodiment of the present invention will be described as a fourth embodiment with reference to FIG. FIG. 4 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 4 of the present invention. In the figure, reference numeral 100 denotes a video data processing terminal which converts video data into visible information, and 200 decodes encrypted video data which is removably connected between a first terminal and a second terminal. An external decryption module 300 is an internal decryption module that decrypts encrypted video data. 1 is a video data output branching unit, 2 is a video data input switching unit, 4 is a video decoding unit, 8 is a scramble state monitoring unit, 201 is a second descrambler, 202 is a second descrambler, 301 is a first descrambler, and 302 is a first descrambler.

The operation of the video data reproducing apparatus according to the fourth embodiment configured as described above will be described below. MPEG video data received from a satellite, a terrestrial wave, or a cable is transmitted from a video data output branching unit 1 to a first descrambling unit 301 in the internal decryption module 300,
The data is sent to the second descrambling unit 201 in the external decryption module 200.

The MPEG video data descrambled by the first descrambling unit 301 is input to the video data input switching unit 2 and the program attribute information of the MPEG video data is changed to the first descramble determining unit 30.
2 is input. The program attribute information is a data packet describing a scramble format of MPEG video data, etc., and is inserted into an MPEG video data packet sequence and sent from a transmission source. The first descrambling judgment unit 302 interprets the attribute information to judge whether or not the descrambling is successful, and outputs the result to the scramble state monitor 8.

Similarly, the second descrambling unit 201
The descrambled MPEG video data is input to the video data input switching unit 2, and the program attribute information of the MPEG video data is input to the second descramble determination unit 202. The second descrambling determining unit 202 interprets the attribute information to determine whether or not the descrambling is successful, and outputs a result of the determination to the scrambled state monitoring unit 8.

The scrambled state monitor 8 receives the output of the first descrambler 302 and the output of the second descrambler 202 and selects the descrambled video data. The video data input switching unit 2 is controlled.

In the fourth embodiment, it is assumed that the user contracts with only one source of the video data, and does not use two decryption modules at the same time. The output of the video data input switching unit 2 is sent to the video decoding unit 4 and MPEG-decoded, and the decoded video data is
Etc. to the video display device.

As described above, the video data reproducing apparatus according to the fourth embodiment of the present invention can support a plurality of scramble formats by providing the internal decryption module, the external decryption module, and the scramble state monitor. There are benefits. In addition, by exchanging the external decryption module, there is an effect that the main body of the video data processing apparatus can be used as it is for a new encryption format.

(Embodiment 5) A video data reproducing apparatus according to a fifth embodiment of the present invention will be described as a fifth embodiment with reference to FIG. FIG. 5 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 5 of the present invention.

In the figure, 100 is a video data processing terminal for converting video data into visible information, and 200 is a first data processing terminal.
An external decryption module 300 for decrypting encrypted video data, which is removably connected between the terminal and the second terminal, is an internal decryption module for decrypting encrypted video data. 21 is a first video decoding unit, 20 is a second video decoding unit, 22 is a video synthesizing unit, 2
Reference numeral 3 denotes a video data selection unit, 71 denotes a first scramble determination unit, 70 denotes a second scramble determination unit, and 90 denotes a control unit.

The operation of the video data reproducing apparatus according to the fifth embodiment configured as described above will be described below. MPEG video data received from a satellite, a terrestrial wave, or a cable, or transmitted from an external device is input to the video data selection unit 23. The video data selection unit 23 selects these input signals and outputs them to the internal decryption module 300 and the external decryption module 200 at the same time.

The MPEG video data descrambled by the internal decryption module 300 is input to the first video decryption unit 21 and decrypted. The MPEG video data descrambled by the external decryption module 200 is input to the second video decryption unit 20 through the second terminal and decrypted.

The first scramble determination section 71 determines whether or not the output of the internal decryption module 300 has been descrambled, and outputs the result of the scramble determination to the control section 90. Similarly, the second scramble determination unit 7
“0” determines whether or not the output of the external decryption module 200 is descrambled, and outputs the scramble determination result to the control unit 90. If the result of the first scramble determining unit 71 is a successful scramble and the result of the second scramble determining unit 70 is a successful scramble, the control unit 90 outputs the output of the first video decoding unit 21 and the second video decoding The video synthesizing unit 22 is controlled so as to synthesize the output of the unit 20.

The video synthesizing unit 22 receiving the output of the first video decoding unit 21 and the output of the second video decoding unit 20 synthesizes the two videos and outputs them to a TV or the like for display. There are methods of synthesizing screens, such as displaying two screens side by side, or displaying in a Picture-in-Picture method using a main screen and a sub-screen.

If the results of the first scramble determination section 71 and the second scramble determination section 70 are both scramble failure, the control section 90 causes the video data selection section 23
Is controlled to replace the output of That is, the video data output to the external decryption module 200 is output to the internal decryption module 300, and the video data output to the internal decryption module 300 is output to the external decryption module 200. It controls the data selection unit 23. The output of the external decryption module 200 is again judged by the second scramble judging unit 70 whether the descrambling has succeeded or failed, and the result is output to the control unit 90. The output of the internal decryption module 300 is again judged by the first scramble judging unit 71 whether the descrambling has succeeded or failed, and the result is output to the control unit 90. The control unit 90 controls the video synthesizing unit 22 to output the output of the video decoding unit that has succeeded in descrambling.
Control. If both descramblings are successful, the video synthesizing unit 22 outputs both synthesized images, and if only one of the descramblings is successful, the video synthesizing unit 2 outputs
2 outputs a single video, and if the descrambling fails for both, the video synthesizing unit 22 outputs an image indicating that the descrambling has failed.

If one of the results of the first scramble determination unit 71 or the second scramble determination unit 70 is a scramble failure, the failed video data is output to a decryption module different from the first one. The control unit 90 controls the video data selection unit 23. In other words, the video data selection unit 23 outputs the data to the internal decryption module 300 when the scrambling fails in the external decryption module 200, and outputs the data to the external decryption module 200 when the scramble fails in the internal decryption module 300. Control.

When the output is output to the internal decryption module 300, the success / failure of descrambling is determined again by the first scramble determination unit 71, and the result is output to the control unit 90. When the data is output to the external decryption module 200, success / failure of descrambling is determined again by the second scramble determination unit 70, and the result is output to the control unit 90.

If the descrambling is unsuccessful, the control unit 90 controls the video synthesizing unit 22 so as to output only the video data for which the descrambling has been successfully successful at first. Is output. If the descrambling is successful, the decryption module that successfully descrambles first is the same as the module that successfully rescrambles, so it is necessary to select one of the video data to descramble. Therefore, the control unit 9
0 controls the video synthesizing unit 22 to display to the user a message notifying the reselection of the video data.

Thus, in the video data reproducing apparatus according to the fifth embodiment of the present invention, by providing both the external decryption module and the internal decryption module,
It is possible to receive two images simultaneously. External decryption module 200 and internal decryption module 30
When descrambling is performed at both 0s, two images can be combined and displayed. If only one of them is descrambled, only that video can be displayed. Further, when the video data selected by the video data selection unit 23 fails in descrambling, it is possible to display to the user that the failure has occurred and to notify the user that the selection operation of the video data selection unit 23 is to be performed again.

(Embodiment 6) A video data reproducing apparatus according to a sixth embodiment of the present invention will be described as a sixth embodiment with reference to FIG. FIG. 6 is a block diagram showing a configuration of a video data reproducing apparatus according to Embodiment 6 of the present invention. In the figure, reference numeral 100 denotes a video data processing terminal for converting video data into visible information; and 200, an external encryption device for decrypting encrypted video data which is detachably connected between a first terminal and a second terminal. Decryption module, 30
Reference numeral 0 denotes an internal decryption module that decrypts encrypted video data. Reference numeral 21 denotes a first video decoding unit;
Denotes a second video decoding unit, 22 denotes a video synthesizing unit, 23 denotes a video data selecting unit, 90 denotes a control unit, 301 denotes a first descrambler, 302 denotes a first descrambler, 2
01 is a second descrambler, and 202 is a second descrambler.

The operation of the video data reproducing apparatus according to the sixth embodiment configured as described above will be described below. MPEG video data received from a satellite, a terrestrial wave, or a cable, or transmitted from an external device is input to the video data selection unit 23. The video data selection unit 23 selects these input signals, and respectively selects the internal decryption module 3
00, a first descrambler 301 in
Through the terminal of the second in the external decryption module 200
At the same time.

The MPEG video data descrambled by the first descrambling unit 301 is input to the first video decoding unit 21, and the program attribute information of the MPEG video data is converted to the first descramble determining unit 302.
Is input to The program attribute information is a data packet describing a scramble format of MPEG video data, etc., and is inserted into an MPEG video data packet sequence and sent from a transmission source. First descramble determination unit 3
In step 02, it is determined whether or not the descrambling has been successfully performed by interpreting the attribute information.
Output to

The MPEG video data descrambled by the second descrambling unit 201 is input to the second video decoding unit 20, and the program attribute information of the MPEG video data is changed by the second descramble determining unit 202. Is input to Second descrambling determination unit 2
In step 02, it is determined whether or not the descrambling has been successfully performed by interpreting the attribute information.
Output to

The first video decoder 21 and the second video decoder 20 decode the respective video data and output them to the video synthesizer 22. The output of the first video decoding unit 21 and the second
The output of the video decoding unit 20 is synthesized by the video synthesizing unit 22, output to a TV or the like, and displayed. Screen composition can be performed by displaying two screens side by side, or by using a main screen and a sub screen.
There is a method such as display in the picture in picture method.

If the result of the first descrambling judging section 302 is a successful scramble and the result of the second descrambling judging section 202 is also a successful scramble, the control section 90 outputs the output of the first video decoding section 21. The video synthesizing unit 22 is controlled to synthesize the output of the second video decoding unit 20 with the output of the video decoding unit 20.

The first descrambling determination section 30
If both the results of the second and second descrambling determination units 202 are unscrambled, the control unit 90 controls the output of the video data selection unit 23 to be replaced. That is, the video data that was first output to the first descrambling unit 301 is output to the second descrambling unit 201, and the video data that was first output to the second descrambling unit 201 is subjected to the first descrambling. Part 30
The video data selection unit 23 is controlled so as to output the video data to the output unit 1.
The output of the first descrambler 301 is again judged by the first descrambler determiner 302 whether the descrambling has succeeded or failed, and the result is output to the controller 90. The output of the second descrambling unit 201 is again output by the second descrambling determining unit 202 to indicate whether or not the descrambling has succeeded.
Failure is determined, and the result is output to the control unit 90. The control unit 90 controls the video synthesizing unit 22 so as to output the output of the video decoding unit that has succeeded in descrambling. If both descramblings are successful, the video compositing unit 2
2 outputs both synthesized images, and if only one of the descrambling is successful, the image synthesizing unit 22 outputs a single image. If both of the descrambling are unsuccessful,
The video synthesizing unit 22 outputs an image indicating that the descrambling has failed.

The first scramble descramble determination unit 30
If one of the results of the second or second descrambling determination section 202 is a scramble failure, the control section 90 causes the video data selection section 23 to output the failed video data to a descrambling section different from the first one. Control.
That is, when scrambling fails in the first descrambling section 301, the signal is output to the second descrambling section 201, and when scrambling fails in the second descrambling section 201, the signal is output to the first descrambling section 301. The video data selection unit 23 is controlled so as to perform the operation.

When the signal is output to the first descrambling unit 301, success / failure of descrambling is determined again by the first descrambling determining unit 302, and the result is output to the control unit 90. Second descrambler 201
Is output again, the success / failure of descrambling is determined again by the second descrambling determining unit 202, and the result is output to the control unit 90.

If the descrambling is unsuccessful, the control unit 90 controls the video synthesizing unit 22 so as to output only the video data for which the descrambling has been successfully successful at first. Is output. If the descrambling is successful, the descrambling unit that succeeds in descrambling first and the descrambling unit that succeeds in descrambling are the same, so it is necessary to select one of the video data and descramble. For this reason, the control unit 90 controls the video synthesizing unit 22 to display a message notifying the reselection of the video data to the user.

As described above, in the video data reproducing apparatus according to the sixth embodiment, there is an effect that a plurality of videos can be viewed at the same time, since a plurality of decryption modules are provided. When the two selected video data input to the video data processing terminal are descrambled by both the external decryption module 200 and the internal decryption module 300, the two videos can be combined and displayed. If only one of them is descrambled,
Only that image can be displayed. If the video data selected by the video data selection unit 23 fails in descrambling, the user is informed of the failure,
It is possible to notify that the selection operation of the video data selection unit 23 is redone.

[0064]

As described above, according to the video data reproducing apparatus of the first aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting it. A video data processing terminal configured to decrypt a received video data output from the received video data output branch, and to decrypt and decrypt the encrypted video data output from the received video data output branch; Internal decryption module for outputting the received video data, a first terminal to which an output from the received video data output branch is input, and a detachable connection between the first terminal and the second terminal. An external decryption module for decrypting encrypted video data input from the first terminal and outputting decrypted video data to the second terminal; A video data input switching unit that selects and outputs one of video data output from the decryption module and video data output from the second terminal; and decrypts video data received from the video data input switching unit. A video decryption unit for detecting whether or not the external decryption module is connected, and detecting that the external decryption module is not connected, when detecting that the external decryption module is not connected, a video output from the internal decryption module. The video data input switching unit is instructed to select data, and when detecting that the external decryption module is connected, the video data input switching unit is configured to select the video data output from the second terminal. Since a connection detection unit for instructing the switching unit is provided, it is possible to cope with a scramble system of a plurality of broadcast sources. Also, by making it easy to replace the external decryption module, the video data processing terminal itself does not need to be replaced when the broadcaster is changed or the scramble is broken by a third party, which reduces costs. There are advantages.

According to a second aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the same. The terminal includes a reception video data output branching unit that branches and outputs received video data, and a transmission source of encrypted video data output from the reception video data output branching unit based on a user's reception contract. And an internal decryption module for decrypting the encrypted video data and outputting decrypted video data, and an output from the received video data output branch unit. Between a first terminal and a source of encrypted video data input from the first terminal detachably connected between the first terminal and the second terminal; An external decryption module that authenticates use based on a user's receiving contract, decrypts the encrypted video data, and outputs decrypted video data to the second terminal, and the internal decryption module. A video data input switching unit that selects and outputs one of video data output from a module and video data output from the second terminal, and decodes and outputs video data received from the video data input switching unit A video decryption unit, and a use authentication result from the external decryption module and the internal decryption module are input, and the internal decryption is performed when the use of the internal decryption module is authenticated by the transmission source of the video data. Instructs the video data input switching unit to select video data output from the module, When the authentication is performed by the source of the video data, the authentication result receiving unit instructs the video data input switching unit to select the video data output from the second terminal. It can support the scrambling method of a plurality of broadcasting sources. Also, there is an advantage that the authenticity of the reception can always be confirmed by the authentication means. Of course, by allowing the external decryption module to be easily exchanged, there is also the advantage that the video data processing terminal itself does not need to be exchanged when the broadcaster is changed or the scramble is broken by a third party. is there.

According to a third aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. Receiving video data output branching unit for branching and outputting received video data, and decrypting encrypted video data output from the received video data output branching unit and outputting decrypted video data An internal decryption module, a first terminal to which an output from the received video data output branch unit is input, and the first terminal detachably connected between the first terminal and the second terminal An external decryption module for decrypting the encrypted video data input from and outputting decrypted video data to the second terminal; and an internal decryption module. A video data input switching unit that selects and outputs one of video data output from the video terminal and video data output from the second terminal, and decodes and outputs video data received from the video data input switching unit. A video decryption unit that receives the output of the internal decryption module as input, determines whether or not the descrambling has been performed, and if it is determined that the scramble has been released, the video output from the internal decryption module. A first scramble determining unit for instructing the video data input switching unit to select data, and an output from the second terminal as an input, determining whether or not the scramble is released, and If it is determined that the video data is released, the video data input switching unit is instructed to select video data output from the second terminal. Because you like and a second scramble determination unit which can correspond to a plurality of scrambling methods, using a valid decryption module, it is possible to reproduce the video data.

According to a video data reproducing apparatus according to a fourth aspect of the present invention, in the video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information, the video data processing terminal Receiving video data output branching section for branching and outputting received video data, decrypting encrypted video data output from the received video data output branching section, and outputting decrypted video data An internal decryption module comprising: a first descrambling unit for receiving, and attribute information of video data from the first descrambling unit, and a first descrambling determining unit for determining success or failure of descrambling; An output is provided between a first terminal to which an output from the received video data output branch is input, and the first and second terminals. A second descrambler for decrypting the encrypted video data input from the first terminal, which is freely connected, and outputting the decrypted video data to the second terminal; Receiving attribute information of video data from the second descrambling unit,
An external decryption module having a second descrambling judgment unit for judging the success or failure of descrambling, and receiving the judgment results from the first descrambling judgment unit and the second descrambling judgment unit, A scramble state monitor for instructing the video data input switch to select an output from a module that has been successfully released, and the first scramble release unit or the second scrambler as instructed by the scramble state monitor. The video data input switching unit for selecting video data decrypted from the terminal; and a video decoding unit for decoding and outputting the video data received from the video data input switching unit. It has the advantage of being able to handle formats. In addition, by exchanging the external decryption module, there is an effect that the main body of the video data processing apparatus can be used as it is for a new encryption format.

According to a fifth aspect of the present invention, there is provided a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information. A video data selection unit that selects and outputs video data input from a plurality of input terminals, decrypts the encrypted video data output from the video data selection unit, and decrypts the decrypted video data. An internal decryption module for outputting, a first terminal to which an output from the video data selection unit is input, and the first terminal detachably connected between the first terminal and the second terminal An external decryption module that decrypts the encrypted video data input from and outputs decrypted video data to the second terminal; and the internal decryption module. A first scramble determination unit for determining whether or not the descrambling of the internal decryption module is successful, and a first for decrypting and outputting the video data received from the output of the internal decryption module A video decryption unit, a second scramble determination unit that receives the output of the second terminal as input, and determines whether or not the descrambling of the external decryption module is successful. A second video decoding unit that decodes and outputs the received video data, and a video synthesis unit that synthesizes and outputs video data output from the first video decoding unit and the second video decoding unit. Receiving the determination results from the first scramble determination unit and the second scramble determination unit, and successfully canceling the scramble in the first scramble determination unit If it is determined that the first video decoding unit, the video synthesizing unit is controlled to display the output of the first video decoding unit, and if the second scramble determining unit determines that the descrambling is successful, Controlling the video synthesizing unit to display the output of the second video decoding unit; and further determining that the first scramble determining unit or the second scramble determining unit has failed in descrambling. A control unit that controls the video data selection unit so as to replace video data input to the external decryption module or the internal decryption module.
There is an effect that it is possible to receive two images simultaneously. When the descrambling is performed by both the external decryption module and the internal decryption module, the two videos are combined and displayed, and when only one of them is descrambled, only the video can be displayed. In addition, when the video data selected by the video data selection unit fails in descrambling, there is an effect that the user can be notified of the failure and notified to re-perform the selection operation of the video data selection unit. .

According to a video data reproducing apparatus according to claim 6 of the present invention, in a video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the same, the video data processing terminal A video data selection unit that selects and outputs video data input from a plurality of input terminals, decrypts the encrypted video data output from the video data selection unit, and decrypts the decrypted video data. An internal decryption module comprising: a first descrambling unit for outputting; and a first descrambling determining unit for receiving attribute information of video data from the first descrambling unit and determining success or failure of descrambling. A first terminal to which an output from the video data selection unit is input, and a first terminal between the first terminal and the second terminal, which are detachable. A second descrambling unit for decrypting encrypted video data input from the first terminal and outputting decrypted video data to the second terminal; and the second scramble An external decryption module having a second descramble determining unit for receiving attribute information of video data from the decryption unit and determining success or failure of descrambling, and video data received from an output of the first descramble unit. A first video decoding unit for decoding and outputting video data, a second video decoding unit for decoding and outputting video data received from the output of the second descrambling unit through the second terminal, A video synthesizing unit that synthesizes and outputs video data output from the video decoding unit and the second video decoding unit; The determination result from the second descrambling judgment unit as an input, when the external decryption module has successfully descrambling,
Controlling the video synthesizing unit to display the output of the first video decoding unit; and displaying the output of the second video decoding unit when the internal decryption module succeeds in descrambling. Controlling the video synthesizing unit, further, when the external decryption module or the internal decryption module fails to descramble,
A control unit that controls the video data selection unit so as to replace video data input to the external decryption module or the internal decryption module, so that video data that can simultaneously view a plurality of videos is provided. There is an effect that a reproducing apparatus can be realized. Also, the external decryption module can be easily replaced, eliminating the need to replace the video data processing terminal itself when the broadcaster is changed or the scramble is broken by a third party, reducing costs. There is an effect that can be.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a configuration of a video data reproducing device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a video data reproducing device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a video data reproducing device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a video data reproducing device according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a video data reproducing device according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a video data reproducing apparatus according to a conventional example.

[Explanation of symbols]

 Reference Signs List 1 video data output branching unit 2 video data input switching unit 4 video decoding unit 5 connection detection unit 6 authentication result receiving unit 8 scramble state monitoring unit 20 second video decoding unit 21 first video decoding unit 22 video synthesizing unit 23 video Data selection unit 50 First terminal 60 Second terminal 70 Second scramble determination unit 71 First scramble determination unit 90 Control unit 100 Video data processing terminal 200 External decryption module 201 Second descrambling unit 202 Second Descrambler 300 internal decryption module 301 first descrambler 302 first descrambler

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C064 CA14 CB08 CC01 CC04 5J104 AA07 AA32 KA02 PA05 PA06

Claims (6)

[Claims] 1. A video data reproducing apparatus having a video data processing terminal that converts received video data into visible information and outputs the video data, wherein the video data processing terminal branches received video data and outputs the received video data. An output branching unit; an internal decryption module that decrypts encrypted video data output from the received video data output branching unit and outputs decrypted video data; and Decrypting encrypted video data input from a first terminal to which the output of the first terminal is input, and the first terminal detachably connected between the first terminal and the second terminal. The decrypted video data is stored in the second
An external decryption module that outputs to an external decryption module; a video data input switching unit that selects and outputs one of video data output from the internal decryption module and video data output from the second terminal; A video decoding unit for decoding and outputting the video data received from the video data input switching unit, and detecting whether or not the external decryption module is connected, and detecting that the external decryption module is not connected In this case, the video data input switching unit is instructed to select the video data output from the internal decryption module, and when it is detected that the external decryption module is connected, the output from the second terminal is performed. And a connection detection unit that instructs the video data input switching unit to select the video data to be input. Video data playback device. 2. A video data reproducing apparatus having a video data processing terminal that converts received video data into visible information and outputs the video data, wherein the video data processing terminal branches received video data and outputs the split video data. Authenticating use between an output branch unit and a source of encrypted video data output from the received video data output branch unit based on a user's reception contract, and encrypting the encrypted video data. And an internal decryption module that outputs decrypted video data, a first terminal to which an output from the received video data output branching unit is input, the first terminal and the second terminal Authenticates the use with the transmission source of the encrypted video data input from the first terminal which is detachably connected between the first terminal and the encrypted video data based on the user's reception contract, and An external decryption module that decrypts the video data and outputs decrypted video data to the second terminal; a video data output by the internal decryption module; and a video output from the second terminal. A video data input switching unit that selects and outputs any of the data; a video decryption unit that decrypts and outputs video data received from the video data input switching unit; the external decryption module and the internal decryption module When the use authentication result is input and the use of the internal decryption module is authenticated by the transmission source of the video data, the video data input switching is performed so as to select the video data output from the internal decryption module. When the use of the external decryption module is authenticated by the source of the video data. Wherein said image data input authentication result receiving unit that instructs the switching unit to select the video data output from the second terminal, including a video data reproducing apparatus, characterized in that. 3. A video data reproducing apparatus having a video data processing terminal that converts received video data into visible information and outputs the video data, wherein the video data processing terminal branches received video data and outputs the split video data. An output branching unit; an internal decryption module that decrypts encrypted video data output from the received video data output branching unit and outputs decrypted video data; and Decrypting encrypted video data input from a first terminal to which the output of the first terminal is input, and the first terminal detachably connected between the first terminal and the second terminal. The decrypted video data is stored in the second
An external decryption module that outputs to an external decryption module; a video data input switching unit that selects and outputs one of video data output from the internal decryption module and video data output from the second terminal; A video decryption unit that decrypts and outputs video data received from the video data input switching unit, and receives an output of the internal decryption module as an input, determines whether or not the scramble is released, and determines whether the scramble is released. If it is determined that the video data is output, a first scramble determination unit instructing the video data input switching unit to select video data output from the internal decryption module, and an output from the second terminal is input. It is determined whether or not the scramble has been released. If it is determined that the scramble has been released, the second And a second scramble determining unit that instructs the video data input switching unit to select video data output from the terminal of (a). 4. A video data reproducing apparatus having a video data processing terminal that converts received video data into visible information and outputs the video data, wherein the video data processing terminal splits and outputs received video data. An output branching unit, a first descrambling unit that decrypts encrypted video data output from the received video data output branching unit, and outputs decrypted video data, and the first scramble An internal decryption module having a first descramble determination unit for receiving the attribute information of the video data from the decryption unit and determining success or failure of the descrambling, and an output from the reception video data output branch unit is input. A first terminal, the first terminal being removably connected between the first terminal and the second terminal; The second descrambling unit that performs decryption of encrypted video data, and outputs the video data decrypted to the second terminal,
An external decryption module comprising: a second descrambling determining unit for receiving attribute information of video data from the second descrambling unit and determining success or failure of descrambling; and the first descrambling determining unit. And a scramble state monitor unit that receives a determination result from the second descrambling determination unit and instructs a video data input switch unit to select an output from a module that has successfully unscrambled the signal. As instructed,
A video data input switching unit for selecting video data decrypted from the first descrambling unit or the second terminal; and a video decoding for decoding and outputting video data received from the video data input switching unit. A video data reproducing device, comprising: 5. A video data reproducing apparatus having a video data processing terminal that converts received video data into visible information and outputs the video data, wherein the video data processing terminal selects video data input from a plurality of input terminals. A video data selection unit for decrypting and outputting encrypted video data output from the video data selection unit, and an internal decryption module for outputting decrypted video data; and Decrypting encrypted video data input from a first terminal to which the output of the first terminal is input, and the first terminal detachably connected between the first terminal and the second terminal. The decrypted video data is stored in the second
An external decryption module that outputs to the terminal of the internal decryption module, a first scramble determination unit that receives an output of the internal decryption module as input, and determines whether or not the descrambling of the internal decryption module is successful. A first video decryption unit that decrypts and outputs video data received from an output of the decryption module, and determines whether or not the descrambling of the external decryption module has been successful by using the output of the second terminal as an input A second scramble determination unit that performs decoding, a second video decoding unit that decodes and outputs video data received from an output of the second terminal, a first video decoding unit, and a second video decoding unit A video synthesizing unit for synthesizing and outputting video data output from the first and second scramble determining units, and a determination result from the first scramble determining unit and the second scramble determining unit As an input, when the first scramble determination unit determines that the descrambling is successful, the video control unit controls the video synthesis unit to display the output of the first video decoding unit; When the scramble determining unit determines that the descrambling is successful, the video synthesizing unit is controlled to display the output of the second video decoding unit, and further, the first scramble determining unit or the second If the scramble determination unit determines that the descrambling has failed,
A video data reproduction device, comprising: a control unit that controls the video data selection unit so that video data input to the external decryption module or the internal decryption module is exchanged. 6. A video data reproducing apparatus having a video data processing terminal for converting received video data into visible information and outputting the visual information, wherein the video data processing terminal selects video data input from a plurality of input terminals. A first descrambler for decrypting encrypted video data output from the video data selector and outputting decrypted video data; and An internal decryption module having a first descramble determining unit for receiving the attribute information of the video data from the descrambling unit and determining the success or failure of the descrambling; and a second input unit for receiving an output from the video data selecting unit. 1 terminal; and an encrypted data input from the first terminal detachably connected between the first terminal and the second terminal. It was decrypts the video data descrambling video the data second
And a second descrambler that receives attribute information of video data from the second descrambler and determines success or failure of descrambling. A decoding module; a first video decoding unit that decodes and outputs video data received from an output of the first descrambling unit; and a first video decoding unit that receives the output from the second descrambling unit through the second terminal. Second to decode and output video data
A video decoding unit; a video synthesis unit that synthesizes and outputs video data output from the first video decoding unit and the second video decoding unit; a first descrambling determination unit; 2, the determination result from the descrambling determination unit is input, and when the external decryption module succeeds in descrambling, the video synthesizing unit is controlled to display the output of the first video decryption unit; If the internal decryption module succeeds in descrambling, controlling the video compositing unit to display the output of the second video decrypting unit;
Further, when the external decryption module or the internal decryption module fails to descramble, the video data selection unit is controlled to replace video data input to the external decryption module or the internal decryption module. A video data reproduction device, comprising: