JP2015039074A - Transmission device, reception device, and transmission method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit content data with viewing restriction from being viewed without any restriction by an apparatus in which viewing restriction is possibly not set in practice.SOLUTION: A transmission device comprises acquisition means and transmission means. The acquisition means acquires viewing restriction setting information indicating a setting value of viewing restriction for a content from a reception device which records the content in a recording unit. The transmission means transmits to the reception device a restricted content in which viewing restriction is added to the content according to a more strict setting value of viewing restriction for the content, out of the setting value of viewing restriction indicated by the viewing restriction setting information acquired by the acquisition means and a setting value of viewing restriction for the content in its own device.

Description

  Embodiments described herein relate generally to a transmission device, a reception device, and a transmission method.

  With the evolution of home network technology, content with viewing restrictions recorded by a recorder with a viewing restriction setting value for content such as the maximum age at which content can be viewed can be dubbed to another device over the network It can be done.

JP 2009-212893 A

  However, in the prior art, content with viewing restrictions recorded on a recorder set with a viewing restriction setting value for content is not set with any viewing restriction setting value for content without any restriction. When dubbed to another device, there is a problem that the dubbed content can be viewed without limitation on the other device.

  The present invention has been made in view of the above, and content that has a viewing restriction recorded in a recorder set with a viewing restriction setting value for the content is not set with a viewing restriction setting value for the content. It is an object of the present invention to provide a transmission device, a reception device, and a transmission method that can prevent dubbing to another device and enabling unlimited viewing.

  The transmission device of the embodiment includes an acquisition unit and a transmission unit. The acquisition unit acquires viewing restriction setting information indicating a viewing restriction setting value for the content from a receiving device that records the content in a recording unit. The transmission means sets a setting with a stricter viewing restriction setting value for the content among the viewing restriction setting value indicated by the viewing restriction setting information acquired by the acquisition means and the viewing restriction setting value for the content in the own device. Restricted content obtained by adding viewing restrictions to the content according to the value is transmitted to the receiving device.

FIG. 1 is a block diagram showing a configuration of a network content dubbing system according to the present embodiment. FIG. 2 is a flowchart showing a flow of content data transmission processing in the transmission apparatus according to the present embodiment. FIG. 3 is a diagram illustrating an example of a content selection screen for selecting content data to be dubbed to the receiving device. FIG. 4 is a diagram showing an example of a device selection screen for selecting a dubbing destination device for dubbing content data.

  FIG. 1 is a block diagram showing a configuration of a network content dubbing system according to the present embodiment. A network content dubbing system 1 according to the present embodiment is a dubbing source recorder that records content data (programs), a transmission device 101 that transmits the recorded content data, and a content transmitted from the transmission device 101. A receiving device 102 that is a dubbing destination device that receives data and records the received content data, and a wired LAN (Local Area Network) or wireless LAN that transmits the content data transmitted from the transmitting device 101 to the receiving device 102 Network 103. In FIG. 1, only one transmitting device 101 and one receiving device 102 are illustrated, but it is assumed that a plurality of transmitting devices 101 and a plurality of receiving devices 102 are connected via a network 103.

  In the present embodiment, the transmission apparatus 101 is a digital television or HDD (Hard Disk Drive) recorder having a recording function and a transmission-side dubbing function. The receiving device 102 is a digital television, HDD recorder, personal computer, or the like having a recording function and a receiving-side dubbing function. Here, the dubbing function includes an operation of dubbing (copying) or moving (moving) content data from the transmitting apparatus 101 to the receiving apparatus 102. In the following description, dubbing and moving content data is simply referred to as dubbing.

  First, the hardware configuration of the transmission apparatus 101 will be described. The transmission apparatus 101 includes a tuner unit 104, a signal processing unit 105, a video / audio output unit 106, a network I / F 107, a control unit 108, a storage unit 109, and the like, which are connected by a bus or the like. In this embodiment, an example in which the transmission apparatus 101 is applied to an HDD recorder having a recording function for recording received single-channel content data in the built-in storage unit 109 will be described. If it is a thing, it will not be limited to this. For example, the transmission apparatus 101 is a television having a recording function for recording content data of a plurality of channels or content data received from a content server on the Internet connected via the network 103 or a router (not shown) in the storage unit 109. It can also be applied to an image receiving apparatus.

  The tuner unit 104 selects AV content data (hereinafter referred to as content data) of a digital broadcast program received by an antenna (not shown) according to an instruction from the control unit 108. Then, tuner unit 104 inputs the selected content to signal processing unit 105. Here, the content data is a transport stream (TS) in which moving image data and audio data of content and other control data are multiplexed.

  The signal processing unit 105 has a reproduction function for converting content data input from the tuner unit 104 into a video signal and an audio signal in accordance with an instruction from the control unit 108. Then, the signal processing unit 105 outputs the content data converted into the video signal and the audio signal to the video / audio output unit 106 and the storage unit 109. In the present embodiment, the signal processing unit 105 is a module that performs processing specialized for content data. For example, encoding, decoding, encryption, decryption, compression (bit rate conversion), codec conversion, system conversion (TS To PS, etc.), extraction of specific data, and embedding of specific data.

  The storage unit 109 follows a command from the control unit 108, such as an HDD (Hard Disk Drive) that records (records) the video and audio signals input from the signal processing unit 105 and the content data input from the network I / F 107. It is a recording part.

  The video / audio output unit 106 outputs the video signal and audio signal input from the signal processing unit 105 to a display device (not shown) and a speaker (not shown) via various interfaces in accordance with instructions from the control unit 108. Thereby, the video of the content data is displayed on the display device, and the audio of the content data is output from the speaker in synchronization with the video.

  The network I / F 107 is a communication control unit that manages communication with the transmission device 101 and the reception device 102.

  Based on a user operation, the control unit 108 selects content data of a digital broadcast program received by an antenna (not shown) by the tuner unit 104, processes the selected content data by the signal processing unit 105, and then performs processing. The content data is recorded in the storage unit 109. The control unit 108 can also output the content data processed by the signal processing unit 105 to the video / audio output unit 106.

  Next, the hardware configuration of the receiving apparatus 102 will be described. The receiving apparatus 102 includes a tuner unit 112, a signal processing unit 113, a video / audio output unit 114, a network I / F 115, a control unit 116, a storage unit 117, and the like, which are connected by a bus or the like. Note that the receiving apparatus 102 has the same configuration as that of the transmitting apparatus 101, and thus a specific description of each unit is omitted. In the present embodiment, an example in which the reception apparatus 102 is applied to an HDD recorder as in the case of the transmission apparatus 101 will be described. However, the present invention is not limited to this as long as it has a dubbing function. For example, the receiving apparatus 102 can be applied to a television receiver having a dubbing function for recording content data received from the transmitting apparatus 101 via the network I / F 115 in the storage unit 117. In this embodiment, the receiving apparatus 102 is described as having a playback function for converting content data input from the signal processing unit 113 into a video signal and an audio signal, but the present invention is not limited to this. is not. However, if the receiving device 102 does not have a playback function, the receiving device 102 does not need to be provided with the tuner unit 112, the signal processing unit 113, and the video / audio output unit 114.

  Next, the functional configuration of the transmission apparatus 101 will be described with reference to FIG. The control unit 108 of the transmission device 101 stores a CPU (Central Processing Unit) that centrally controls each unit of the transmission device 101, a ROM (Read Only Memory) that stores various programs such as BIOS, and various data in a rewritable manner. And a RAM (Random Access Memory) which is a main storage device that functions as a work area of the CPU and serves as a buffer. The CPU included in the control unit 108 functions as the viewing restriction information processing unit 110 and the content restriction unit 111 by developing and executing a program stored in the ROM on the RAM.

  The control unit 108 selects an operation such as an electronic program guide (EPG) acquired via the tuner unit 104 or the network I / F 107, a list of content data recorded in the storage unit 109, a recording function, and a playback function. A menu screen, a GUI (Graphical User Interface) that accepts various selections, and the like are displayed on a display device (not shown) via the video / audio output unit 106. Further, the control unit 108 displays GUIs such as a content selection screen G1 (see FIG. 3) and a device selection screen G2 (see FIG. 4) on a display device (not shown).

  The control unit 108 searches through the network 103 for the receiving device 102 that is a dubbing destination device that is operating when the transmitting device 101 is activated. In the present embodiment, the function of the UPnP control point is incorporated into the control unit 108 of the transmission apparatus 101 and the function of the UPnP device is incorporated into the control unit 116 of the reception apparatus 102, whereby the transmission apparatus 101 receives the reception apparatus 102 in the UPnP Discovery phase. Search for.

  Further, the transmitting apparatus 101 downloads the Device Description that lists the device information of the retrieved receiving apparatus 102 and the service information provided by the receiving apparatus 102 from the retrieved receiving apparatus 102 in the UPnP Discovery phase. Device information of the receiving apparatus 102 is acquired.

  Here, it is assumed that the device information includes viewing restriction setting information indicating an upper limit age at which content data managed and set by the viewing restriction information processing unit 118 in the receiving apparatus 102 can be viewed. In the present embodiment, the viewing restriction setting information included in the device information indicates the upper limit age at which the content data can be viewed. However, as long as it indicates a setting value for viewing restriction on the content data in the receiving apparatus 102. However, the present invention is not limited to this.

  Then, in order to manage the receiving device 102 operating on the network 103, the control unit 108 identifies the receiving device 102 (for example, the IP address of the receiving device 102) and the receiving device 102 The acquired device information is associated and recorded in a RAM or the like.

  In addition, the control unit 108 receives a transmission instruction that is an instruction to transmit content data to at least one receiving apparatus 102 connected to the network 103 from the user. Note that the transmission instruction includes an instruction to copy (copy) content data and an instruction to move (move) content data.

  More specifically, the control unit 108 selects a dubbing of content data on a menu screen (not shown) for selecting an operation such as a recording function or a playback function, or a remote controller (not shown) When the dubbing button is pressed at, these instructions are accepted as the above transmission instructions.

  Then, when receiving a transmission instruction from the user, the control unit 108 selects content data to be dubbed to be dubbed to the receiving apparatus 102 from the content data recorded in the storage unit 109. In the present embodiment, the control unit 108 selects content data selected by the user on the content selection screen G1 (see FIG. 3) as content data to be dubbed.

  In addition, when the content data to be dubbed is selected, the control unit 108 selects the content data to be dubbed from the receiving device 102 specified by the identification information recorded in the RAM in association with the device information. The receiving device 102 which is a dubbing destination device to be dubbed is selected. In the present embodiment, the control unit 108 selects the receiving device 102 selected by the user on the device selection screen G2 (see FIG. 4) as the dubbing destination device.

  The viewing restriction information processing unit 110 includes viewing restriction setting information (for example, parental level (viewing restriction level It is determined whether or not (information) is a viewing-restricted program superimposed on the selected content data.

  If the viewing restriction setting information is superimposed on the selected content data, and the viewing restriction information processing unit 110 determines that the selected content data is a viewing restricted program, the viewing restriction information processing unit 110 Of the viewing restriction setting value indicated by the viewing restriction setting information included in the device information recorded in the RAM in association with the identification information, and the viewing restriction setting value for the content data preset in the transmission device 101, the viewing restriction is set. Select the one with a strict setting value. In the present embodiment, the viewing restriction information processing unit 110 associates the identification information of the selected receiving device 102 with the upper limit age of the viewing restriction indicated by the viewing restriction setting information included in the device information recorded in the RAM, and the transmission. Of the upper limit ages for viewing restrictions on content data set in advance in the apparatus 101, the one with the lower upper limit age for viewing restrictions on content data is selected.

  For example, the viewing restriction information processing unit 110 transmits the transmission information when the upper limit age of the viewing restriction indicated by the viewing restriction setting information included in the device information recorded in the RAM associated with the identification information of the selected receiving device 102 is 12 years old. When the upper limit age of viewing restriction for content data set in advance in the device 101 is 20 years old, viewing restriction setting information included in the device information recorded in the RAM in association with the identification information of the selected receiving device 102 is stored. 12 years old, which is the upper limit age of viewing restrictions to be shown, is selected. Then, the viewing restriction information processing unit 110 sets viewing restriction setting information indicating the upper limit age of the selected viewing restriction in the content restriction unit 111.

  The content restriction unit 111 scrutinizes the metadata of the selected content data and the viewing restriction setting information superimposed on the selected content data, and changes when the viewing restriction is applied to the selected content data The received metadata is transmitted to the selected receiving apparatus 102. Specifically, the content restriction unit 111 transmits metadata that is changed when viewing restriction is applied to the selected content data, for example, metadata in which the total time, title information, and the like are modified. It transmits to the selected receiving apparatus 102 via F107. As a metadata transmission method, for example, an action of Create Object defined by UPnP can be used.

  Then, when the metadata is normally received by the selected receiving device 102 and a response is normally returned from the receiving device 102, the content restriction unit 111 is selected according to the selected setting value of the viewing restriction. The restricted content data obtained by adding viewing restrictions to the received content data is transmitted to the receiving apparatus 102. Specifically, the content restriction unit 111 compares the viewing restriction setting value indicated by the parental level information superimposed on the selected content data with the selected viewing restriction setting value to restrict viewing restriction. Whether the content data is viewable or not is determined.

  For example, when the upper limit age of the viewing restriction selected as the setting value of the viewing restriction exceeds the upper limit age of the viewing restriction indicated by the parental level information superimposed on the selected content data, It is determined that the content data satisfies the viewing restriction condition and can be viewed. On the other hand, when the upper limit age of the viewing restriction selected as the setting value of the viewing restriction is lower than the upper limit age of the viewing restriction indicated by the parental level information superimposed on the selected content data, It is determined that the content data does not satisfy the viewing restriction condition and cannot be viewed.

  If the content restriction unit 111 determines that the selected content data is viewable content data, the content restriction unit 111 transmits the selected content data to the receiving device 102 without restricting viewing. On the other hand, when the content restriction unit 111 determines that the selected content data is content data that cannot be viewed, the content restriction unit 111 applies the viewing restriction to the selected content data according to the upper limit age of the selected viewing restriction. The restricted content data is transmitted to the receiving device 102.

  More specifically, the content restriction unit 111 selects the selected content data from the selected content data when the parental level information superimposed on the selected content data is set in units of content data. The content data that can be viewed at the upper limit age for viewing restriction (for example, 12 years old) is transmitted to the receiving apparatus 102 as restricted content data.

  Also, the content restriction unit 111 is included in the selected content data when the parental level information superimposed on the selected content data is set for each scene included in the selected content data. Of the scenes, the restricted content data excluding the scenes for which the viewing restriction is performed at the selected upper limit age (for example, 12 years old) is transmitted to the receiving apparatus 102. As a result, even if viewing restrictions are set for some scenes included in the selected content data, the content data can be viewed for scenes for which viewing restrictions are not set.

  Furthermore, when the parental level information superimposed on the selected content data is set in units of scenes included in the selected content data, the content restriction unit 111 sets the scenes included in the selected content data. Among them, restricted content data in which an alternative scene is adopted for a scene that is subject to viewing restriction at the selected upper limit age of viewing restriction (for example, 12 years old) is transmitted to the receiving apparatus 102.

  Next, the functional configuration of the receiving apparatus 102 will be described with reference to FIG. The control unit 116 of the receiving device 102 has a property of centrally controlling each unit of the receiving device 102, a ROM that stores various programs such as BIOS, and various data in a rewritable manner. A RAM serving as a main storage device functioning as a work area and serving as a buffer or the like is provided. The CPU included in the control unit 116 functions as the viewing restriction information processing unit 118 by expanding and executing a program stored in the ROM on the RAM.

  The control unit 116 receives the metadata and the restricted content data (or content data) transmitted from the transmission device 101 via the network I / F 115. Then, the control unit 116 causes the storage unit 117 to record the received metadata and restricted content data (or content data). Accordingly, the upper limit age of the viewing restriction higher than the upper limit age of the viewing restriction preset in the transmission apparatus 101 is set for the content data with the viewing restriction in which the setting value of the viewing restriction is not substantially set. Can be prevented from being dubbed indefinitely on the receiving device 102) to which the viewing has been set.

  Next, the flow of content data transmission processing will be described with reference to FIG. FIG. 2 is a flowchart showing a flow of content data transmission processing in the transmission apparatus according to the present embodiment.

  First, the control unit 108 selects content data to be dubbed to be dubbed by the storage unit 117 of the receiving apparatus 102 from the content data recorded in the storage unit 109 based on the content selection screen G1 (see FIG. 3). Select (step S201).

  FIG. 3 is a diagram illustrating an example of a content selection screen for selecting content data to be dubbed to the receiving device. As shown in FIG. 3, the control unit 108 causes the storage unit 117 of the receiving apparatus 102 to dub the recorded content list (recorded programs A to C) recorded in the storage unit 109 on the content selection screen G1. Each of the content data (recorded programs A to C) is displayed so as to be selectable. Then, based on the content selection screen G1, the control unit 108 accepts selection of content data (recorded programs A to C) to be dubbed to the storage unit 117 of the receiving device 102 from the user. For example, when the recorded program A in FIG. 3 is selected, the control unit 108 accepts that the recorded program A to be dubbed has been selected.

  Next, based on the device selection screen G2 (see FIG. 4), the control unit 108 selects the receiving device 102 that is the dubbing destination device of the selected content data based on the device selection screen G2 (step S202).

  FIG. 4 is a diagram showing an example of a device selection screen for selecting a dubbing destination device for dubbing content data. As shown in FIG. 4, the control unit 108 displays on the device selection screen G2 each of the receiving devices 102 specified by the identification information recorded in the RAM in association with the device information so as to be selectable. Then, based on the device selection screen G2, the control unit 108 accepts from the user the selection of the receiving device A that is the content data dubbing destination. For example, when the receiving device A in FIG. 2 is selected, the control unit 108 accepts that the receiving device A that is a dubbing destination is selected.

  When receiving apparatus 102 serving as a dubbing destination device is selected, viewing restriction information processing section 110 determines whether or not the selected content data is a viewing restriction program (step S203). When it is determined that the selected content data is not a viewing-restricted program (step S203: No), the content restriction unit 111 does not restrict viewing on the selected content data, and the selected content data The metadata (unprocessed metadata) and the selected content data (unprocessed content data) are transmitted to the selected receiving device 102 in accordance with an appropriate copyright protection standard (steps S207 and S208). .

  On the other hand, when it is determined that the selected content data is a viewing-restricted program (step S203: Yes), the viewing-restricted information processing unit 110 adds the device information associated with the identification information of the selected receiving device 102. Of the viewing restriction setting values indicated by the included viewing restriction setting information and the viewing restriction setting values for the content data set in advance in the transmission apparatus 101, the one with the more severe viewing restrictions is selected. Subsequently, the content restriction unit 111 creates metadata of the selected content data when the viewing restriction is added to the selected content data based on the setting value of the stricter viewing restriction previously selected ( Step S204).

  The content restriction unit 111 transmits the created metadata to the selected receiving device 102 (step S205). Then, when the created metadata is normally received by the receiving device 102 and a normal response is returned from the receiving device 102, the content restricting unit 111 selects the content selected according to the selected viewing restriction setting value. Restricted content data obtained by adding viewing restrictions to the data is transmitted to the receiving apparatus 102 in accordance with an appropriate copyright protection standard (step S206).

  As described above, according to the network content dubbing system 1 according to the present embodiment, the transmission apparatus 101 acquires the viewing restriction setting information indicating the setting value of the viewing restriction for the content data from the receiving apparatus 102, and the acquired viewing restriction setting. Among the viewing restriction setting values indicated by the information and the viewing restriction setting values for the content data in the own device, the one with the stricter viewing restriction setting values for the content data is selected, and the content data is selected according to the selected viewing restriction setting value. The restricted content data to which viewing restriction is added is transmitted to the receiving device. Also, the receiving apparatus 102 transmits viewing restriction setting information indicating the viewing restriction setting value for the content data to the transmitting apparatus 101, and the viewing restriction setting value indicated by the transmitted viewing restriction setting information and the content in the transmitting apparatus 102. Of the setting values for viewing restrictions on the data, the restricted content data obtained by adding viewing restrictions to the content data according to the stricter setting value for viewing restrictions on the content data is received from the transmission device 101, and the received restricted content data is stored. Recorded in the unit 117. As a result, the content data with viewing restrictions recorded in the transmission apparatus 101 in which the setting value for viewing restriction for the content data is set is received without any restriction set for the content data without any restriction. Since dubbing to the device 102 can be prevented, it is possible to prevent content data with viewing restrictions from being viewed unlimitedly by the receiving device 102 where viewing restrictions may not be substantially set.

  Note that the program executed by the control unit 108 of the transmission apparatus 101 and the control unit 116 of the reception apparatus 102 according to the present embodiment is provided by being incorporated in advance in a ROM or the like, but is not limited thereto and can be installed. The file is recorded in a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk) in a format or executable format. Also good.

  Further, the program executed by the control unit 108 of the transmission device 101 and the control unit 116 of the reception device 102 according to the present embodiment is provided by being stored on a computer connected to a network such as the Internet and downloaded via the network. You may comprise so that it may do. The program executed by the control unit 108 of the transmission apparatus 101 and the control unit 116 of the reception apparatus 102 according to the present embodiment may be configured to be provided or distributed via a network such as the Internet.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 101 ... Transmission apparatus, 102 ... Reception apparatus, 108, 116 ... Control part, 110 ... Viewing restriction information processing part, 111 ... Content restriction part, 117 ... Storage part, 118. ..Viewing restriction information processing section

Claims (9)

Acquisition means for acquiring viewing restriction setting information indicating a setting value of viewing restriction for the content from a receiving device that records the content in a recording unit;
Of the viewing restriction setting value indicated by the acquired viewing restriction setting information and the viewing restriction setting value for the content in its own device, the content is viewed according to the setting value of the stricter viewing restriction setting value for the content. Transmitting means for transmitting restricted content to which the restriction is added to the receiving device;
A transmission device comprising: The acquisition means acquires, from the receiving device, the viewing restriction setting information indicating an upper limit age at which the content can be viewed as a setting value of the viewing restriction,
The transmission means views the content out of the upper limit age indicated by the acquired viewing restriction setting information and the upper limit age at which the content can be viewed on the own device, which is a setting value for viewing restriction on the content on the own device. The transmission device according to claim 1, wherein the restricted content obtained by adding a viewing restriction to the content according to a lower possible upper age limit is transmitted to the receiving device.   The transmission means includes, among the contents transmitted to the receiving device, an upper limit age indicated by the acquired viewing restriction setting information and an upper limit age at which the content can be viewed among the upper limit ages capable of viewing the content in the own device. The transmission device according to claim 2, wherein content that can be viewed at a lower upper limit age is transmitted to the reception device as the restricted content.   The transmission means can view the content among the upper limit age indicated by the acquired viewing restriction setting information and the upper limit age at which the content in the own device can be viewed among the scenes included in the content transmitted to the receiving device. The transmission apparatus according to claim 2, wherein the restricted content excluding scenes in which viewing restriction is performed at a lower upper limit age is transmitted to the receiving apparatus.   The transmission means can view the content among the upper limit age indicated by the acquired viewing restriction setting information and the upper limit age at which the content in the own device can be viewed among the scenes included in the content transmitted to the receiving device. The transmission apparatus according to claim 2, wherein the restricted content including an alternative scene instead of a scene whose viewing restriction is performed at a lower upper limit age is transmitted to the receiving apparatus. Transmission means for transmitting viewing restriction setting information indicating a setting value of viewing restriction for the content to a transmission device that transmits the content;
Of the viewing restriction setting value indicated by the viewing restriction setting information transmitted by the transmission means and the viewing restriction setting value for the content in the transmission device, the content is set according to the stricter viewing restriction setting value for the content. Receiving means for receiving, from the transmitting device, restricted content to which viewing restrictions are added;
Recording control means for recording the restricted content received by the receiving means in a recording unit;
A receiving device. The transmission means transmits the viewing restriction setting information indicating an upper limit age at which the content can be viewed as a setting value of the viewing restriction,
The receiving means includes an upper limit age indicated by the viewing restriction setting information transmitted by the transmitting means, and an upper limit age at which the content in the transmitting apparatus can be viewed, which is a setting value for viewing restriction on the content in the transmitting apparatus. The receiving device according to claim 6, wherein the restricted content obtained by adding viewing restriction to the content according to a lower upper age limit at which the content can be viewed is received from the transmitting device.   The receiving means uses, as the restricted content, the content that can be viewed at the lower upper limit age of the upper limit age indicated by the viewing restriction setting information transmitted by the transmitting means and the upper limit age at which the content in the transmitting device can be viewed. The receiving device according to claim 7, receiving from the transmitting device. A transmission method executed by a transmission device,
The transmission device includes a control unit,
The controller is
An obtaining unit obtaining viewing restriction setting information indicating a setting value of viewing restriction for the content from a receiving device that records the content in a recording unit;
According to the setting value of the stricter viewing restriction setting value for the content among the viewing restriction setting value indicated by the acquired viewing restriction setting information and the viewing restriction setting value for the content in its own device. Transmitting restricted content obtained by adding viewing restriction to the content to the receiving device;
Including sending method.

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