JP2014029750A - Data transfer method and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data transfer method between electronic apparatuses and an electronic apparatus for reproducing protected content.SOLUTION: An electronic apparatus includes signal processing means and reproduction enabling processing means. The signal processing means transmits content held by recording means to a reception side device independent of a reproduction enabling signal for allowing the content to be reproduced. The reproduction enabling processing means receives reproduction request of the content from the reception side device to transmit the reproduction enabling signal to the reception side device.

Description

  The present invention relates to a data transfer method between electronic devices and an electronic device that reproduces protected content.

  There is a need to play protected content held by only one electronic device on a plurality of electronic devices. For protected content, only limited copying (dubbing) or movement (moving) is permitted under copy control (DRM (Digital Rights Management)).

JP 2006-352312 A

  For dubbing (copying) or moving (moving) protected content, specify the dubbing (move) destination electronic device from the content supply source electronic device that holds the content and instruct the execution of dubbing (move). is necessary.

  An object of the present invention is to provide a data transfer method between electronic devices and an electronic device that reproduces protected content.

  The electronic apparatus according to the embodiment includes a signal processing unit and a reproducibility processing unit. The signal processing means transmits the content held by the recording means to the receiving side device independently of the reproduction enabling signal that permits the reproduction of the content. The playback enabling processing means receives the playback request for the content from the receiving side device, and transmits the playback enabling signal to the receiving side device.

An example of the connection between the electronic devices to which the embodiment is applied is shown. 2 shows an example of processing between electronic devices to which the embodiment is applied. 2 shows an example of processing between electronic devices to which the embodiment is applied. 2 shows an example of an electronic apparatus (content supplier) to which the embodiment is applied. 2 shows an example of an electronic device (client device) to which the embodiment is applied. 2 shows an example of an electronic device (client device) to which the embodiment is applied. 2 shows an example of an electronic device (content supplier / remote controller) to which the embodiment is applied. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (client device) to which the embodiment is applied is shown. An example of the screen display of the electronic device (client device) to which the embodiment is applied is shown. An example of the screen display of the electronic device (client device) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown. An example of the screen display of the electronic device (content supply source) to which the embodiment is applied is shown.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 illustrates an example of a connection between an electronic device to which the embodiment is applied and a client device (another electronic device) connected to the electronic device. The elements / configuration described below may be realized by hardware, or may be realized by software by a microcomputer (processing device, CPU (Central Processing Unit)). .

  In FIG. 1, the electronic device A is established by an arbitrary number of client devices B, C,..., N−1 or N, for example, DLNA (Digital Living Network Alliance), so that contents or control signals can be transferred. Are connected by wire or wireless by a network (LAN (Local Area Network) 1 which is assumed to be interconnected mainly in homes or small-scale offices) 1 constructed according to the above rules.

  The electronic device A can transmit the content held by itself to each of the client devices B, C,..., N-1 or N, or the client devices B, C,. Has a server function that can be read simultaneously. In the following description, the electronic device A is assumed to be, for example, a television broadcast receiving device (hereinafter referred to as a television device A) having a recording (recording) function.

  Client devices B, C,..., N−1 or N are the second and subsequent television devices or recorder devices. The client devices B, C,..., N−1 or N are, for example, a mobile phone device or a portable terminal device (a tablet (tablet personal computer (tablet PC) device having a touch panel type input mechanism, or It may be a smart phone (information terminal device such as a multi-function mobile phone terminal device) etc. The client devices B, C, ..., N-1 or N are also NAS (Network Attached Storage) HDDs, for example. (Hard Disk Drive)), etc., a slave device that mainly holds data, or a movable terminal device (storage device) in which a receiving unit (tuner unit), encoder, decoder, etc. are prepared in the HDD, or mainly content It may be a playback device or the like capable of playing back. The client devices B, C,..., N-1 or N also include a rack (storage shelf) for storing or holding a television device that receives, for example, a television broadcast and reproduces content, or an amplifier device and a speaker. The audio device may be prepared integrally.

  Note that at least one of the client devices B, C,..., N−1 or N and the television apparatus (electronic device) A may have substantially the same configuration. Further, a server (home server) 3 that holds content (program / title / information) may be connected to the LAN 1. In addition, any one of the client devices B, C,..., N-1 or N, or each of them is connected to the server 3 by, for example, an HDMI (High-definition Digital Media Interface) cable, a LAN cable (communication line) or a combination thereof And may be directly connected. Note that the server 3 may be provided integrally with any device connected to the LAN 1, for example, the television apparatus A (the television apparatus A can also serve as the server 3).

  Hereinafter, a client device B is connected to, for example, a display device or a television device, and a device capable of recording and reproducing content (hereinafter referred to as a recorder device B), and a client device C is a television device having no recording device, for example. (Hereinafter referred to as video playback device C), client device N-1, for example, NAS (hereinafter referred to as HDDN-1), and mobile terminal device (hereinafter referred to as HDDN-1) that can be taken away from LAN 1 , Referred to as tablet device N). Note that the tablet device N includes a touch panel, a display unit prepared integrally with the touch panel, and a communication control unit capable of communication with a communication line (wireless communication network) as illustrated in FIG.

  The content can be acquired through a distribution network using, for example, a spatial wave (radio wave), a cable (including an optical fiber), an Internet protocol (IP) communication network, or the like. The content is also referred to as a stream, a program, or information, and includes video (Video), audio, music (Audio), and the like. Note that the video includes a moving image and a still image, or text (information represented by characters or symbols indicated by a coded code string), and any combination thereof. Note that moving images (Video) are, for example, MPEG (Moving Picture Experts Group) -1, -2, -4 (H.264 / AVC), and audio (Audio) are, for example, MP3 (MPEG Audio layer-3), AC3 ( Audio Code number 3), linear PCM (Pulse Coded Module), and still images correspond to, for example, JPEG (Joint Photographic Experts Group).

  In FIG. 1, a television apparatus A, a recorder apparatus B, a video reproduction apparatus C,..., And a tablet apparatus N connected to each other through the LAN 1 exchange contents (program / title / information) with each other except for the HDDN-1. It is reproducible. It should be noted that the content held by HDDN-1 can also be played back on any or each of the individual devices (A, B, C,..., N).

  Hereinafter, an example of reproduction of content between the client devices B, C,..., Or N and the television apparatus A (or the server 3) will be described.

  As described above, for dubbing (copying) or moving (moving) protected content, the electronic device that holds the content specifies the electronic device that is the dubbing (move) destination and instructs to perform dubbing (move). It is necessary to. Here, digital signaled content (programs / information / titles) supplied by broadcast stations (broadcasters) and distributors has little deterioration during dubbing (copying), so substantial copy prohibition (move) “Copy once”, which is permitted only (move), or “dubbing 10” in which the 10th copy is a move is used. "Dubbing 10" is used for BS (Broadcasting Satellite) broadcasting (sampling frequency less than 48 kHz) of terrestrial digital broadcasting and satellite broadcasting, and CS (Communication Satellite, communication satellite) of satellite broadcasting. "Copy once" is applied to each type of broadcast (sampling frequency 48 kHz).

  For this reason, for example, the content held by the television apparatus A or the server 3 is dubbed (moved) to any one or each of the client devices B, C,... In order to enable reproduction, content reproduction permission on a dubbing (move) destination device based on copy control processing (copy control, DRM (Digital Rights Management)) described below with reference to FIGS. In addition, it is necessary to confirm (approve) the user with respect to the reproducibility condition of the content of the supplier. In particular, in the case of a move, the content cannot be played back by the device itself that holds the content, and thus user approval (confirmation) is essential.

  For confirmation (approval) of a user, GUI (Graphical User Interface) or OSD (On Screen Display) is used. For content to which, for example, “copy once” is applied, as shown in FIG. In the display section of “A <actually display“ model name ”that can be obtained from, for example, a MAC address” or “connection name” in a network / mutual recording system connected by HDMI etc.> B <same “model name” or “connection name”> ”, for example“ selected content will be moved to <device B “model name” or “connection name”> ”(cannot be played back on this unit) ) "And a" confirm "button display or" execute "or" yes "to prompt confirmation (approval) thereof.

  On the other hand, for content to which “dubbing 10” is applied, as shown in FIG. 21, for example, “Recording device A <same“ model name ”or“ connection name ”>” is displayed on the display unit. An alert (message) such as “-1” will be displayed.

  For the copy control processing described with reference to FIG. 21 and FIG. 22, for example, “the copy restriction is“ −1 ”every time“ reproduction is permitted ”to a device that has requested content reproduction” ”/“ reproduction ” If the device that permits the access is “10”, the content may be moved (moved) from the device ”.

  However, specifying the dubbing (move) destination electronic device from the content supply source electronic device and instructing the execution of the dubbing (move) is, for example, when the user intends to go out with the tablet device N. Requires dubbing content prior to going out. This is subject to the time limit for going out, and may cause a situation in which it is necessary to give up playing content on the go.

  Against this background, content is dubbed (moved) in advance in a format that cannot be played back to all client devices connected to LAN 1, and playback is permitted to client devices that have made playback requests (contents can be played back) By performing the procedure, it becomes possible to reproduce the dubbed (move) content in the client device that requests reproduction without departing from the rules of the copy control processing. As will be explained later, content is taken out of the DLNA range by using the data transfer method of “Dubbing to everyone <Example of name on the sender side>” / “Share with everyone <Example name of the recipient side>” In the case of trying to reproduce the content, it is not necessary to copy the content prior to taking out, and the content desired by the user can be reproduced immediately when a request to reproduce the content occurs.

  Specifically, as shown in FIG. 2, “authentication ([201])” and “key sharing ([202]), that is, between the server 3 (television device A) and the client device (here, tablet device N), that is, The tablet device N acquires the copy key (supply of the copy key from the server 3 to the tablet device N) ”, and the content held by the server 3 is dubbed (moved) to the tablet device N ([203]).

  Note that the server 3 refers to the above-described MAC address or the EDID (Extended in HDMI connection) of the client device that is the content dubbing destination at the time of “authentication ([201])” or at a predetermined timing, for example. Display identification data) and stored in, for example, the nonvolatile memory NVM. Further, the fact that the content has been transmitted in a format that cannot be reproduced as it is is held in, for example, the nonvolatile memory NVM ([204]).

  As shown in FIG. 3, in the tablet device N that holds the content that cannot be played back as it is, it accepts a playable request (user operation) from the user ([301]) and plays back to the server 3 (TV device A). Send enable request ([302]).

  The server 3 that has received the play enable request performs “authentication ([303])” with the tablet device N (client device), and the number of times that content that has already been dubbed (moved) to the tablet device N can be dubbed. Is confirmed ([304]), and if the possible number of times of dubbing is 1 or more, the content that has already been dubbed (moved) to the tablet device N is put into a reproducible state that enables replay ([305]).

  As a result, the content already dubbed (moved) can be reproduced on the tablet device N ([306]).

  Note that the server 3 confirms the number of times that content that has already been dubbed (moved) in the tablet device N is reached, and if the number of times that dubbing is possible is 0, the server 3 stores the content that has already been dubbed (moved) in the tablet device N. Notifies that playback is not possible and that playback is not possible. That is, when the content already dubbed to the tablet device N is the content that is the target of “copy once”, any other client device B, C,... Content that has been dubbed to the tablet device N due to factors such as that the content has already been moved to a storage medium such as an optical disc that has only been moved, and has been made available for playback, etc. ([307]). Similarly, the content already dubbed to the tablet device N is the content that is the target of “dubbing 10”, and is any other client device B, C,... -1 or a recording medium such as an optical disc has already been dubbed nine times, and if any client device has moved the content, the content dubbed to the tablet device N cannot be played back ( [307]).

  As described above, content is dubbed in advance on a storage medium such as the client device B, C,..., Or N, or an optical disc, and the content held by the device requested to be reproducible is made reproducible. By making the playable state according to the request, regardless of the number of times (number) of content dubbing (moving) to the client device, the content according to the remaining number of times that can be dubbed according to the rules of copy control processing during content playback Can be played.

  The reproducible state is a change in copy control information that is integrated with or attached to the content in the content protected in accordance with the copy control processing rules such as “dubbing 10” and “copy once”. Update of control information, for example, the content supply source (television device A (server 3)) finishes the process of counting “−1” in “dubbing 10” and copies on the content receiving side (tablet device (client device) N). The protected content can be reproduced after the time when the notification that the control information has been changed is received.

  Actually, the tablet device N (client device) has a dubbable count of “1” from the television device A in response to the above-described reproduction enabling request for reproducing the content already received from the television device A (server 3). ”Or more, and notification of completion of the process of“ −1 ”of the count in“ Dubbing 10 ”, or a“ reproducible state ”notification supplied at a predetermined timing, for example, a reproduction permission key Etc., and the already held content is decrypted using the permission key. At this point, the combined content cannot be played yet (not valid).

  That is, when the tablet device N (client device) succeeds in decrypting the content, the tablet device N (client device) notifies the television device A (server 3) of the completion of decryption of the content (successful decryption).

  The television apparatus A (server 3) changes the copy control information described above, and notifies the tablet apparatus N of the change of the copy control information.

  When the tablet device N receives the change of the copy control information for the content, the copy control information for the content already held by the tablet device N is updated, and the content is validated (reproducible).

  As described above, there is a request that content that is permitted to be dubbed (duplicated) or moved (moved) but protected by the copy control process is previously dubbed to an arbitrary client device and can be played back from the client device. In such a case, the content is protected (protected) by the client device of the dubbing destination without deviating from the rule of the copy control processing by making the playback possible state within the range of the number of times that the dubbing is possible (copy control processing). Can be played.

  The television device A, recorder device (client device) B, and tablet device (client device) N shown in FIG. 1 are schematically shown in FIG. 4, FIG. 5, and FIG. Interface unit * 11 (“*” is an identification code (A, B, C...) For each device), content is written (recorded) in the recording area * 21, and content is read from the recording area * 21 ( (Playback) recording / playback processing unit * 13, writing of content into the recording / playback processing unit * 13, playback of content from the recording / playback processing unit * 13, and main control unit * 15 for controlling the elements / configuration described below At least. Each device includes at least an encoder * 17 used for recording content, a decoder * 19 for reproducing content, and the like.

  Each device also has a recording area (recording unit) * 21 typified by, for example, an HDD (Hard Disk Drive), an SD (Secure Digital) memory, etc., and content (digital) encoded according to the above-mentioned predetermined standard Information / program / title) can be recorded. The recording area * 21 can also be used as a database to be referred to when copying (dubbing) content described later. The database can be prepared in, for example, firmware of the main control unit 15 or in a built-in memory.

  If each (arbitrary) device A, B, C has a television broadcast receiving function, the content (program / title / information) received by a receiving unit (not shown) and selected by a tuner unit (not shown) Is encoded by the encoder * 17 and recorded in the recording unit * 21 via the recording / reproducing processing unit * 13. The same applies to content (information / program / title) input as an external input, for example.

  On the other hand, when the reproduction of the content (program / title) is instructed, the content read from the recording unit * 21 by the recording / reproducing processing unit * 13 is decoded by the decoder * 19, and the video output (Video or still image) is performed. And output as an audio output (Audio, audio / music) to an output unit (not shown). In addition, when the reproduction of the content (program / title) is instructed, if the monitor device (display) and the speaker are prepared, the output video and audio (sound / music) are reproduced on the device. Is done.

  As already described, the tablet device N (client device) is a communication controller that enables communication between the touch panel 23, the display unit 25 prepared integrally with the touch panel 23, and a communication line (wireless communication network). Part 27.

  Next, an example of processing for executing the above-mentioned “dubbing to everyone” / “sharing with everyone” will be described.

<Set (pre-) the content that is the target of “Dubbing for Everyone” during recording>
During playback of arbitrary content or playback of a broadcast (program / content) of an arbitrary channel of a television broadcast, a predetermined button of a remote controller (remote control device) shown as an example in FIG. 7, for example, “dubbing to everyone” When the button RM is turned on or there is no dedicated button, for example, by turning on the “menu” button or the “setting” button, a setting screen (selection screen for receiving “selection” input as shown in FIG. ) 801 is displayed.

  On the displayed setting screen 801, the cursor or focus by operating the remote control device is moved, the cursor is placed on the “dubbing to everyone” display 811 or focused, and, for example, the “decision” button is turned on. The “OK” button includes four buttons, a “blue” button, a “red” button, a “green” button, and a “yellow” button, of a remote control device that is supplied and provided in a digital terrestrial television compatible television set or recorder. There is a case where it is prepared as one of the corresponding instruction inputs. In that case, by selecting the corresponding color button, the selection input (control signal similar to the “OK” button on) is input to the setting screen. Input is possible.

  By selecting the “Dubbing for Everyone” display 811, for example, a “program navigation (recording reservation list)” screen 921 is displayed as shown in FIG. 9. When the “program guide” button (display) 931 displayed on the screen display is turned on on the “program navigation (recording reservation list)” screen, “programs including programs broadcast at the current time in receivable channels” A table (list of all channels) "1001 is displayed (FIG. 10).

  When a program is selected by turning on the “decision” button of the remote control device by placing the cursor on or focusing on the “display frame” 1011 that displays the time and information of an arbitrary program in the “program guide” 1001, FIG. As shown, a “recording reservation (basic setting)” screen 1101 is displayed. From the displayed “recording reservation” screen 1101, conditions at the time of recording, for example, “video recording rate” / “audio recording rate”, “recording destination (HDD / external device (NAS) / memory card)”, sub audio (Recording language in the case of bilingual broadcasting) and the like are selected in turn by moving the cursor or focusing. In the screen display shown in FIG. 11, a check box 1110 indicating whether or not “dubbing to everyone” is applied is displayed, so that the cursor can be moved or focused (for example, the check box can be selected). On the other hand, you can check “check” or check). FIG. 11 shows a state where the application of “dubbing to everyone” is not set.

  For the application of “dubbing to everyone”, a list of client devices connected to the LAN 1 and capable of recording content by dubbing or moving by selecting application (turning on the “change setting” button display 1111). 1121 is displayed by, for example, pop-up display (FIG. 12). At this time, “Re” 1131 is displayed in the check box 1130 for the client device to which “Dubbing for Everyone” has already been applied. The list display form may be, for example, a list of client devices and a [check box] for each device as shown in FIG. 12, or a device name display as shown in FIG. A rotary type in which the display in the display frame 1140 is switched to the “present” display 1141 or the “−” display 1142 by the operation of the arrow keys of the remote control device every time.

  As described above, when [Yes (put [re] in the check box]] in FIG. 12 or [Yes] in FIG. 13 is selected, as shown in FIGS. 21 and 22, “Every time“ permit playback ”to the device that requested the playback of the content, the copy restriction is“ −1 ”” / “the device that is permitted to play is“ 10 ”, the content is A message such as “Moving from this machine” will be displayed in a pop-up display.

  In addition, in each screen display, a “confirmation” display is displayed in which an instruction for “confirmation (next screen)” display that prompts the transition to the next screen (display) (display of the next screen) can be input. It is preferable. Also, a control command for “confirmation” is assigned to one of the four buttons of the “blue” button, “red” button, “green” button, and “yellow” button of the remote control device, and the button of that color is turned on. You can also encourage them. In the individual screen display, any one or more displays may be omitted, and different display examples may be added. Of course, for the screen display, any display method shown as a display example can be arbitrarily combined.

<Dubbing recorded programs to client devices by "Dubbing to everyone">
FIG. 14 shows an example in which “dubbing to everyone” is applied to the recorded content held by the television apparatus A (server 3) to enable playback by the client device. The “dubbing to everyone” display is displayed by displaying the “dubbing to everyone” display 811 according to the procedure already described with reference to FIG. 8 and performing a selection instruction (input by the remote control device).

  By selecting the “Dubbing for Everyone” display 811, for example, a “program navigation (recording reservation list)” screen 1421 is displayed as shown in FIG. 14. When the “recorded program list” button (display) 1431 displayed on the screen display is turned on in the “program navigation (recording reservation list)” screen, for example, an “editing navigation” screen 1501 is displayed as shown in FIG. The On the “editing navigation” screen 1501, when the cursor is moved to the display (thumbnail) of an arbitrary content to which “dubbing to everyone” is applied, or “focus” is input and “determination” is input (instructed) from the remote control device, FIG. As shown in FIG. 16, for example, “High-speed as it is”, “High-speed copy management ...”, “Image quality designation…”, “Night ... [VR]”, “Night ... [AVC]” ”,“ Dubbing for Everyone ”, and the like, a list 1610 of processes applicable to the content (program) is displayed. Although processing that cannot be applied is displayed in the list, for example, a display 1699 accompanied by processing such as “gray down” that reduces the brightness of the display informs that it is not selectable.

  In the pop-up display (list 1610), place the cursor on the “dubbing to everyone” display 1611 or put it in focus and turn on the “OK” button on the remote control device, or the “blue” button and “red” button , By turning on the corresponding color button prepared as one of the instruction inputs corresponding to the “green” button and the “yellow” button, the selection input on the setting screen (“OK” button on and When a similar control signal) is input, as shown in FIG. 17, a condition setting screen 1710 in which [Quality setting] that can be set in the “dubbing to everyone” process is displayed. Therefore, if you place the cursor on the [Settings] display you want to set or put the focus on and click the “Enter” button, you can “dub to everyone” under the conditions set on the condition setting screen (actually After setting all the conditions including the application of “Dubbing to everyone”, for example, it is executed by turning on “Start dubbing”).

  The application of “dubbing to everyone” can be set according to the example described with reference to FIGS.

<Reproduction of content supplied by “Dubbing for Everyone” (client device)>
A client device that holds content that has been transferred (dubbed or moved) in advance in a state where it cannot be played back as it is by “dubbing to everyone <name example of the sender”> 18, an example is shown in FIG. 18, and an application / program is displayed in a GUI (Graphical User Interface) display 1801 displayed on the display unit 25 after the tablet device (client device) N is activated. The “Share with everyone” program (application) can be started by operating the “Share with everyone” button display 1811 prepared as an associated “button display” or icon-like pictogram (picture display). .

  When the “share with everyone” program (application) is started, a list of contents already dubbed or moved is displayed (FIG. 19). Of the listed contents, contents for which dubbing (move) conditions permitted by copy control processing (copy control, DRM) have already been completed by another client device (new dubbing (move) is prohibited). As shown in FIG. 20, during the indication 1901, for example, a display 2099 accompanied by a process such as “gray down” for reducing the brightness of the display informs that it is not selectable.

  When the user selects the “button display” of any content that has been dubbed (moved together) by “Share with everyone” or by selecting the display of a part of the content as a thumbnail and operating the icon (display) shown as a button, A request for enabling playback of the selected content is transmitted to the server 3 (TV apparatus A) (([302]) in FIG. 3).

  The reproduction enabling request from the tablet device N is input to the server 3 (TV device A) via the public communication network (Internet) 5 ", and as a response to the input, the server 3 (TV device A) sends a tablet A command for “authentication (([303]) in FIG. 3”) is transmitted to the device N.

  When the “authentication” between the server 3 (television device A) and the tablet device N is successful (the server 3 (television device A)) has transmitted a play enable request from the tablet device N (already the tablet device N). (D) Confirm the number of times that the dubbed or moved content can be dubbed (([304]) in FIG. 3).

  When the dubbing possible count is 1 or more, the content that has already been dubbed (moved) to the tablet device N is put into a reproducible state that enables replay (([305] in FIG. 3)).

  It should be noted that, as a result of the response to the request for enabling playback by another client device, the content to which the tablet device N has transmitted the playback enable request has already been dubbed 9 times, for example, in the content targeted for “dubbing 10”. In addition, when the content is moved to any one of the client devices, the content dubbed to the tablet device N cannot be reproduced (([307] in FIG. 3)). In this case, the server 3 notifies the tablet device N that playback is not possible (playback is impossible).

  On the other hand, in the tablet device (client device) N, content from the server 3 (TV device A) for the “Dubbing for Everyone” / “Share with Everyone” program (application) in relation to, for example, storage capacity. Can be temporarily suppressed. For example, as shown in FIG. 19, when the “share with everyone” program (application) is started, a “not receive new content” display 1999 or the like can be arbitrarily set by, for example, a check box function.

  In addition, when a request for enabling playback of a dubbed (moved) content is not requested for a certain period (time), a mode for securing the remaining storage capacity such as deleting the content may be prepared. Note that content that receives transmission from the server 3 (television device A) is set to a tendency (history) of content played by the user, such as “favorite”, “automatic”, “genre”, or “user designation”, for example. It is also possible to set based on this.

  As described above, protected content that allows only limited copying (dubbing) or moving (moving) under copy control (DRM) cannot be reproduced in advance on all client devices. By duplicating or moving the content and performing a procedure for permitting the playback to the client device that requested the playback (making the content playable), without departing from the rules of copy control processing (copy control) The client device that requests reproduction can reproduce the dubbed (moved) content.

  In addition, when a tablet device is taken out of a DLNA-compliant network (LAN) area or the like to play back content, there is no need for dubbing the content prior to taking out, and the content is to be played back. When a request occurs, the content desired by the user can be immediately reproduced.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are 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 1 ... LAN (network), 3 ... Server (transmission partner (apparatus) / TV apparatus), * 11 ... Interface part, * 13 ... Recording / reproduction processing part, * 15 ... Main control part, * 17 ... Encoder, * 19 ... Decoder, * 21 ... Recording area, B, C, ..., N ... Client device (receiving device).

Claims (11)

Signal processing means for transmitting the content held by the recording means to the reception side device independently of the reproduction enabling signal for permitting reproduction of the content;
Replay enabling processing means for accepting the playback request of the content from the receiving device and transmitting the replay enabling signal to the receiving device;
An electronic device comprising:   The electronic device according to claim 1, wherein the reproduction enabling processing unit transmits the reproduction enabling signal to the receiving-side apparatus in accordance with a copy control processing rule.   3. The electronic apparatus according to claim 1, wherein the reproduction enabling processing unit notifies the receiving side device that the reproduction enabling signal cannot be transmitted according to a copy control processing rule. A signal processing means for transmitting a reproduction request for reproducing the received content to a transmission destination;
Video display means for receiving the enabling signal from the destination and reproducing the content;
An electronic device comprising:   5. The electronic apparatus according to claim 4, wherein the video display means displays an alert corresponding to non-transmission of the reproduction enabling signal from the transmission destination according to a copy control processing rule.   The video display means identifies the content corresponding to non-transmission of the playback enable signal from the transmission destination according to a copy control processing rule and the content from which the transmission destination has transmitted the playback enable signal. The electronic device according to claim 4 or 5, wherein the electronic device is displayed in a possible manner. The content held by the recording means is transmitted to the receiving side device independently of the playback enabling signal that permits playback of the content,
A data transfer method for accepting a content reproduction request from a receiving device and transmitting a reproduction enabling signal to the receiving device.   The data transfer method according to claim 7, wherein the reproduction enabling signal enables reproduction of the content in accordance with a rule of copy control processing. Send a play enable request to receive the received content independently of the content that can be played,
A data transfer method for receiving a playback enable signal from a transmission destination, enabling playback of content, and playing back.   The data transfer method according to claim 9, wherein an alert corresponding to non-transmission of a reproduction enabling signal from a connection partner in accordance with a copy control processing rule is displayed. Recording means for holding content;
Signal processing means for transmitting the content held by the recording means to a receiving device;
Replay enabling processing means for transmitting to the receiving side device a playback enabling signal that enables playback of the content in response to the content playback request from the receiving side device;
When the recording means holds the content, the signal processing means permits the transmission of the content to the receiving device,
An electronic device comprising:

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