Content protection processing method

Abstract

To provide a digital broadcast receiver capable of executing higher value-added functions. [Solution] A broadcast receiving device capable of receiving video data of a digital broadcast program, program linkage data for the digital broadcast program, and screen layout control information for the digital broadcast program includes: a receiving unit that receives the video data of the digital broadcast program, the program linkage data, and the screen layout control information; a video generating unit that divides a video display area of ​​an output video into multiple areas based on the screen layout control information, and arranges, in each of the multiple areas, program video information generated based on the video data of the received digital broadcast program and text information, graphic information, or video information generated based on the received program linkage data, and generates video information obtained by combining the multiple areas as output video information; a display unit that displays the output video information; an operation input unit that inputs user operation instructions; and a control unit.

Claims

[Claim 1] A method for content protection processing in a broadcast receiving device that receives broadcast program content, A receiving step of receiving the aforementioned broadcast program content, A storage step for storing the broadcast program content received in the reception step, An output step for outputting the broadcast program content stored in the storage step to an external device for viewing, A move processing step for moving the broadcast program content accumulated in the aforementioned accumulation step to an external device, Equipped with, In the storage step, if the broadcast program content received in the reception step is content that can be copied without restriction and is protected by encryption, the broadcast program content received in the reception step is recorded and stored in an encrypted state so that it can be played back only by the broadcast receiving device, and in the output step, the stored broadcast program content, which has been stored after being played back by the broadcast receiving device, is output for viewing in an encrypted state. The storage of the broadcast program content in the storage step can be performed in a storage unit located at the output destination of the IP interface, via an IP interface configured with Ethernet-compatible hardware provided in the broadcast receiving device. The storage of the broadcast program content in the storage unit located at the output destination of the IP interface in the storage step, encrypted so that it can be played back only by the broadcast receiving device; the output step in which the stored broadcast program content, which has been recorded in the storage unit located at the output destination of the IP interface in the storage step in an encrypted state so that it can be played back only by the broadcast receiving device, is output from the broadcast receiving device via the IP interface in an encrypted state for viewing; and the move processing step in which the stored broadcast program content, which has been recorded in the storage unit located at the output destination of the IP interface in an encrypted state so that it can be played back only by the broadcast receiving device, is output from the broadcast receiving device in an encrypted state. All of these can be performed via the same IP interface configured with Ethernet-compatible hardware. In the storage step, the stored broadcast program content is recorded in the storage unit at the output destination of the IP interface in an encrypted state so that it can be played back only by the broadcast receiving device, and then the stored broadcast program content is output from the broadcast receiving device after the storage is completed by playback by the broadcast receiving device. In the output step and the move processing step, the control state to the external device via the IP interface is as follows: In the storage step, the stored broadcast program content is recorded in the storage unit at the output destination of the IP interface in an encrypted state so that it can be played back only by the broadcast receiving device. Subsequently, when the stored broadcast program content is output from the broadcast receiving device after the broadcast receiving device has finished storing it by playing it back, the output for viewing in an encrypted state to the external device via the IP interface in the output step is permitted when the IP address of the external device is within the same subnet as the IP address of the broadcast receiving device, and prohibited when the IP address of the external device is outside the same subnet as the IP address of the broadcast receiving device. However, if within a predetermined period the conditions are met that the external device is connected within the same subnet as the IP address of the broadcast receiving device and is paired as a device that can be viewed even outside the same subnet as the IP address of the broadcast receiving device, then output is permitted even if the IP address of the external device is outside the same subnet as the IP address of the broadcast receiving device. This is a first control state. The storage step involves recording the stored broadcast program content in an encrypted state so that it can be played back only by the broadcast receiving device in the storage unit at the output destination of the IP interface, and then, when the stored broadcast program content is output from the broadcast receiving device after the broadcast receiving device has finished storing it, the move processing step involves moving the encrypted broadcast program content to the external device via the IP interface, and includes a second control state which allows the move when the IP address of the external device is within the same subnet as the IP address of the broadcast receiving device, and prohibits the move when the IP address of the external device is outside the same subnet as the IP address of the broadcast receiving device. Content protection processing method.

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