The present application claims priority from Japanese Application No. P2000-256253 filed on Aug. 25, 2000, the disclosure of which is hereby incorporated by reference herein.
The present invention relates to an information processing device and method, and a recording medium, and particularly to an information processing device and method and a recording medium which are suitably applied to a device for providing users with copy-protected data.
Recently, digital broadcasts for distributing video data and audio data as digital data have become popular. A reception device for receiving digital broadcasts is equipped with plural output terminals so that it can connect to various devices. For example, it is equipped with a digital terminal for outputting received digital data to another device, a terminal to which an IEEE1394 cable is connected, a terminal to which an optical cable is connected, etc., and also it is equipped with an analog terminal for outputting received data to an analog-only supporting device.
Three types of digital data are distributed, such as video data and audio data for television receivers, audio data for radio receivers and programs for personal computers or game machines.
Even if the digital data distributed by the digital broadcast are temporarily stored in a recording medium and copied into another recording medium many times, the image quality and the sound quality of the digital data do not deteriorate, and thus plural copies can be created. Such a situation is unfavorable from the viewpoint of copyrights, and thus distributed digital data are subjected to a method of preventing such illegal copies (copy protect).
As described above, there are three types of digital data (contents) to be distributed, and a reception device for receiving digital data is equipped with plural terminals. The copy protect operation is varied in accordance with the types of these contents and the outputting terminals.
As shown in the tables of
The present invention has an object to collect information on copy protect and easily supply information on the copy protect to users.
An information processing device according to the present invention is characterized by comprising: judging means for judging whether restriction on recording is imposed on a program which a user desires to watch and listen to; analyzing means for analyzing the restriction if it is judged by the judging means that the restriction on recording is imposed on the program; and display control means for controlling a display on a screen to make the user recognize a processing result of the analyzing means.
An information processing method according to the present invention is characterized by comprising: a judging step for judging whether restriction on recording is imposed on a program which a user desires to watch and listen to; an analyzing step for analyzing the restriction if it is judged in the processing of the judging step that the restriction on recording is imposed on the program; and a display control step for controlling a display on a screen to make the user recognize an analysis processing result of the analyzing step.
A program of a recording medium according to the present invention is characterized by including: a judging step for judging whether restriction on recording is imposed on a program which a user desires to watch and listen to; an analyzing step for analyzing the restriction if it is judged in the processing of the judging step that the restriction on recording is imposed on the program; and a display control step for controlling a display on a screen to make the user recognize an analysis processing result of the analyzing step.
In the information processing device, the information processing method and the recording medium according to the present invention, when it is judged that restriction on recording is imposed on the program which the user wants to watch/listen to, the restriction is analyzed, and in a case where the analysis result indicates that analog recording is released by paying an additional fee, a case where the analysis result indicates that analog recording is allowed, but digital recording is not allowed, or a case where neither analog recording nor digital recording is allowed, a display on a screen to make the user recognize the analysis result is controlled in accordance with the respective cases. Accordingly, the information on the restriction on the recording can be easily supplied to the user.
Preferred embodiments according to the present invention will be described hereunder with reference to the accompanying drawings.
When input data are scrambled and when the scramble is allowed to be descrambled (for example, a regular subscription is taken out, and thus a descramble key is kept), the descrambler 12 descrambles the scramble and outputs the data to a stream processor 13. The stream processor 13 outputs video data of the input data to a video encoder 14, and also outputs audio data of the input data to an audio decoder 15. When the video data are encoded data, the stream processor 13 subjects the input video data to the decode processing corresponding to the encode system, further generates OSD (On Screen Display) data if occasion demands, superposes the OSD data on the decoded video data and then outputs the data thus obtained.
When the video encoder 14 outputs input video data to a television receiver 50, the video encoder 14 subjects the input video data to encode processing meeting the television receiver 50, for example, the encode processing based on the NTSC (National Television System Committee) system and then outputs the encoded data to the television receiver 50. The video data processed by the stream processor 13 are also output to a component 51 treating digital data.
The audio decoder 15 subjects the input audio data to the decode processing corresponding to the encode system of the audio data. The audio data which have been subjected to the decode processing by the audio decoder 15 are output to an interface 16. The interface 16 is connected to IEEE1394 cable 52, for example, and outputs the audio data from the audio decoder 15 to a device connected to the IEEE1394 cable 52.
The audio data output from the audio decoder 15 are also output to other devices through an optical cable 53. Further, the audio data output from the audio decoder 15 are converted to analog data by a D/A (Digital/Analog) converter 17, and output to a speaker 54.
The tuner 11 extracts the data of a program indicated by the user. The user tunes a desired program by using a remote controller 32 or switch 33, and outputs an instruction. The switch 33 is provided on the side surface of the receiver 10, and it is designed to output substantially the same instruction as the remote controller 32. The remote controller 32 receives/transmits data from/to the receiver 10 by infrared rays, for example.
The data corresponding to an instruction which the user transmits by using the remote controller 32 are received by a photodetector 18 of the receiver 10. The data received by the photodetector 18 or the data corresponding to the instruction based on the switch 33 are output to a display controller 19. The display controller 19 outputs the data from the photodetector 18, or the data from the switch 33, to a controller 20 if occasion demands, and also controls the display portion 21 according to the input data.
The display portion 21 is provided on the side surface of the receiver 10, and it makes a display to make the user know that the processing corresponding to the user's instruction is executed or makes a display for information to be supplied to the user.
When a subscription for viewing a pay program is taken out, data supplied from a partner with which the subscription is taken out are stored in an IC card 31. This data is a descrambling key for descrambling the scramble or the like. The IC card 31 is mounted in a card I/F (Interface) 22 so that the recorded data are read out. The data thus read out are output to the controller 20.
On the basis of the input data, the controller 20 outputs an indication of a program to be extracted to the tuner 11, and also supplies the descrambling key to the descrambler 12.
The operation of the receiver 10 when the user tunes a program will be described with reference to the flowcharts of
When it is judged in step S2 that the program can be watched/listened to, the processing goes to step S3 to judge whether the IC card 31 can be accessed or not. If it is judged in step S2 that the program cannot be watched/listened to or if it is judged in step S3 that the IC card 31 cannot be accessed, the processing goes to step S4 in which a message corresponding to each situation is displayed on the television receiver 50.
If it is judged in step S2 that the program selected by the user cannot be watched/listened to, there would be considered such a case that the user does not take out subscription of the program (channel). Accordingly, when the processing goes from step S2 to S4, a message like “You cannot watch/listen to this program on the basis of the subscription condition” or the like is displayed.
If it is judged in step S3 that the IC card 31 cannot be accessed, there may be considered such a case that the IC card 31 is not set in the card I/F 22 or a different IC card 31 is set. If it is judged that the IC card 31 is not set in the card I/F 22, a message like “Please insert card” or the like is displayed in step S4. If it is judged that a different IC card 31 is set in the card I/F 22, a message like “Access to card is not established” or the like is displayed in step S4.
When such a message as described above is displayed, the user may open the lid of the card I/F 22 in order to set the IC card 31. When the lid of the card I/F 22 is opened, the message displayed on the screen of the television receiver 50 is switched to a message like “Please close the lid” or the like. When the display of the message in step S4 is finished, the processing returns to step S1 to repeat the processing of the step 1 and the subsequent steps for a new tuning operation.
On the other hand, if it is judged in step S3 that the IC card 31 can be accessed, the processing goes to step S5 to judge whether a selected program has a restriction on the age for watching or listening to the program. If it is judged that the program has an age restriction, the display is switched to a frame for input of a code number in step S6, and the program is set to a code-number input standby state.
If a code number is accurately input in step S6, the processing goes to step S7. If in step S6 the code number is not accurately input, the processing does not go to the step S7, and no subsequent processing is carried out.
On the other hand, if it is judged in step S5 that no age restriction is imposed, the processing of step S6 is skipped, and the processing goes to step S7. It is judged in step S7 whether the selected program is a program to be purchased or not. A program for which it is judged unnecessary to purchase is a charge-free broadcast program or a program for which it is judged that a subscription for the program was taken out in advance.
If it is judged in step S7 that the program selected by the user is a program which need not be purchased, in other words, the program can be watched/listened to, the tuning processing is finished and the screen of the television receiver 50 is switched to display the program selected. On the other hand, if it is judged in step S7 that the program selected by the user is a program which must be purchased, the processing goes to step S8 (
It is judged in step S8 whether the time for purchasing the program selected by the user has expired. For example, if the broadcast time for the program selected by the user has terminated, it is judged that the purchase time has passed. If it is judged in step S8 that the purchase time for the program has passed, the processing goes to step S9.
In step S9, for example, a message to make the user recognize that the purchase is impossible as shown in
On the other hand, if it is judged in step S8 that the purchase time has not passed, the processing goes to step S10 in which information on the program selected by the user, for example, a program title, a start time, an end time, a charge amount, or the content of the program is displayed on the screen of the television receiver 50. In addition to the above display, it is judged in step S11 whether the program selected by the user has a digital copy control descriptor or not. An example of the digital copy control descriptor is shown below.
digital_copy_control_descriptor ( ) {
descriptor_tag 8 uimsbf
descriptor_length 8 uimsbf
digital_recording_control_data 2 bslbf
maximum_bit_rate_flag 1 bslbf
component_control_flag 1 bslbf
copy_control_type 2 bslbf
copy_control_type 2 bslbf
}
The processing of the step S12 and the subsequent steps is carried out according to the content described in such a descriptor. It is judged in step S12 whether the copy control type is equal to 01 or not. If the copy control type is equal to 01, some restriction exists on copying the program as is apparent from
It is judged in step S13 whether a service type is television, in other words, whether video data and audio data are supplied. In
As is apparent from
Therefore, it is judged in step S13 whether the service type is the television or not, and it is judged in step S14 whether the copy control type is equal to 11. If it is judged in step S13 that the service type is the television, or it is judged in step S14 that the copy control type is not equal to 11, the processing goes to step S15. In step S15, it is judged whether the receiver 10 is installed in the television receiver 50 (that is, the built-in type).
Here, in
Further, if it is judged in step S13 that the service type is not television and it is judged in step S14 that the control type is not equal to 11, the processing goes to step S15 to judge whether television receiver 50 is of the type in which the receiver 10 is installed. The above processing procedure is carried out because only sounds can be supplied from the television receiver 50 to a user when the service type is not television, for example when the service type is radio.
If it is judged in step S15 that the receiver 10 is not a built-in receiver, in other words, if it is judged that the receiver 10 and the television receiver 50 are connected to each other with an external terminal through a cable or the like, the processing goes to step S16 in which a message to make the user recognize that the program is a program which the user cannot watch/listen to as shown in
When an “acknowledge” button is operated on the screen as shown in
If it is judged in step S12 that the copy control type is equal to 01, or it is judged in step S14 that the control type is equal to 11, the processing goes to step S17. The case where the control type is equal to 01 and the case where the control type is equal to 11 show that some restriction is imposed on copying the program.
It is judged in step S17 whether CGMS (digital recording control data) is equal to 00. As is apparent from
If it is judged in step S17 that CGMS is not equal to 00, the processing goes to step S18 to judge if CGMS is equal to 10. If CGMS is equal to 10, it shows that only one copy is allowed. If it is judged in step S18 that CGMS is not equal to 10, the processing goes to step S19 to judge whether APS (Analog Protection System) is equal to 00.
If it is judged in step S19 that APS is not equal to 00, the processing goes to step S20. If it is judged that APS is equal to 00, the processing goes to step S21. In step S20, a message to make the user recognize that recording is not allowed irrespective of analog or digital recording as shown in
In step S21, a display frame as shown in
If it is judged in step S22 that the “cancel” button is not operated, in other words, if a “only watching/listening” button is operated on the display frame shown in
On the other hand, if it is judged in step S18 that CGMS is equal to 10, the processing goes to step S23 to judge whether an additional fee is needed. If it is judged that CGMS is equal to 10, as is apparent from
On the other hand, if it is judged in step S23 that an additional fee is needed, the processing goes to step S24 to display to the user that an additional fee is needed for recording, as shown in
On the display frame as shown in
It is judged in step S26 whether there is any pay ES (Elementary Stream). If it is judged in step S26 that there is a pay ES, the processing goes to step S27 to display a selection frame as shown in
A yen mark showing that an additional fee is needed is displayed for the picture 2 and the voice 3 in the four kinds of pictures and voices. A selected ES is represented by a black dot and a non-selected ES is represented by an open circle.
A “purchase” button and a “purchase cancel” button are provided in the lower portion of the screen. When selected ESs need additional fees, the total amount of the additional fees is displayed between these buttons. The user selects a desired ES using such a display frame, and operates the “purchase” or “purchase cancel” buttons.
It is judged in step S28 whether the “purchase cancel” button is operated or not. If it is judged that the “purchase cancel” button is operated, the tuning processing is finished. If it is judged that the “purchase cancel” button is not operated, in other words, if it is judged that the “purchase” button is operated, the processing goes to step S29 and an enter display frame as shown in
It is judged in step S30 from the display frame shown in
It is also judged in step S8 (
On the other hand, if it is judged in step S31 that the program which the user decides to purchase is within the purchase time, the processing goes to step S32 to judge whether descrambling can be performed. If it is judged in step S32 that descrambling cannot be performed, for example, because of some restriction, a display to make the user recognize this fact is provided in step S33. In step S33, such a display frame as shown in
In the display example shown in
On the other hand, if it is judged in step S32 that the program which the user decides to purchase can be descrambled, the processing goes to step S34 to judge whether the program exceeds the upper limit of the payment based on a card. The card means a credit card with which the user made a contract to pay a fee in advance when the user watches/listens to pay broadcast or an IC card 31 (
In step S35, a message is displayed on the television receiver 50 to the user that the program which he or she wishes to purchase cannot be purchased because the program's cost exceeds the upper limit of the user's payment card as shown in
The program desired by the user is selected as described above. As described above, the copy protect is determined in accordance with the service type and the device which is the output destination of the received data. Therefore, according to the above processing, the user can easily purchase a desired program without suffering cumbersome complicated stipulations on the copy protect, and also the user does not suffer the disadvantage of being unable to make a recording because of the application of copy-protect and thus be able to only watch/listen to a program after the user purchases the program.
In other words, with respect to the copy protect, the processing on the copy protect can be finished at the user side by carrying out only one operation on one displayed frame of the four display frames of
A series of processing steps as described above can be implemented using hardware or software. When the series of processing steps is implemented using software, the program constituting the software is installed from a recording medium into a special-purpose computer or a general purpose computer which can perform various functions by installing various programs therein.
As shown in
In this specification, the step describing the program to be supplied through the medium contains not only the processing that is carried out in a sequential series according to the described order, but also the processing that is not carried out in this order, but in parallel to, or independent of this processing.
In this specification, the system represents the overall device constructed by plural devices.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims.
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