JP2010011180A - Video recording/reproducing apparatus, and content transmitting method and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology that enables dubbing of a TS content that cannot be dubbed by the conventional technology when dubbing the content through the network, and to improve the convenience of a video recording/reproducing apparatus. <P>SOLUTION: When a content stored in an HDD106 (S101) is selected, a microcomputer 117 acquires individual information of its own apparatus from a receiving apparatus through a network (S02), and it determines whether or not the content selected on the basis of the individual information can be transmitted to the receiving device (S105). When the selected content cannot be transmitted to the receiving device, the microcomputer 117 transcodes the selected content based on the individual information, and transmits the transcoded content to the receiving device (S07-S06). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a video recording / playback apparatus that transmits video content to a receiving device via a network.

  In recent years, a technique for dubbing video content between apparatuses by using a configuration in which a plurality of recording / reproducing apparatuses are connected via a network has become widespread.

  In the following Patent Document 1, a recording / playback apparatus that is a dubbing source requests information about the status of a recording medium held without specifying a plurality of other recording / playback apparatuses. Once identified, request information about its status. Then, based on this status, it is determined whether or not the dubbing destination is established.

(Paragraph numbers 0025 to 0032, FIGS. 2 to 4 and 6)
Japanese Patent Laying-Open No. 2006-18871 (paragraph numbers 0025 to 0032, FIGS. 2 to 4 and 6)

  Recently, a system for transferring MPEG-TS format content such as digital broadcast content via a network using an encryption technique such as DTCP-IP (digital transmission content protection over internet protocol) has been provided. In DTCP-IP, an ID is assigned to each device, mutual authentication is performed using public key encryption or common key encryption, and recording / playback or transfer is possible only after recognizing that content protection can be performed by both devices. If the authentication is successful, the transmitting device has an encryption key, the receiving recorder has a decryption key, and the encrypted video content is transmitted.

  Some devices that do not support DTCP-IP can transmit and receive PS (program stream) such as MPEG2-PS via a network, but cannot transmit or receive TS (transport stream) such as MPEG2-TS. The above-mentioned Patent Document 1 determines the dubbing destination based on the recording medium and the stator held by the recording / reproducing apparatus, and does not describe whether or not dubbing between TS content and copy-prohibited PS / TS content is possible.

  The present invention provides a technique for enabling dubbing of TS content that could not be dubbed in the past during the dubbing (transmission / reception) of content between a plurality of video recording / playback devices, and the convenience of the video recording / playback device. The purpose is to improve performance.

  One embodiment of the present invention is a video recording / playback apparatus for transmitting video content to a receiving device via a network, the storage means for storing the content, and the selection means for selecting the content stored in the storage means; Means for acquiring device-specific individual information from the receiving device via the network, means for determining whether the selected content can be transmitted to the receiving device based on the individual information, and the selected Transcoding means for transcoding the selected content based on the individual information and transmitting the content to the receiving device when the content cannot be transmitted to the receiving device.

  In the present invention, in content dubbing (transmission / reception) via a network between a plurality of video recording / playback devices, TS content that could not be received conventionally is automatically transcoded by the transmitting device according to the receiving device. Thus, the convenience of the video recording / reproducing apparatus can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an example of a video recording / reproducing apparatus according to an embodiment of the present invention. Note that the video recording / reproducing apparatus in FIG. 1 functions as both a transmitting apparatus and a receiving apparatus using an Ethernet (registered trademark) controller 115.

  In this apparatus, at the time of information recording, analog video / audio signals input from the TV tuner 100 and the external input terminal 101 are digitized by the video ADC 102 and the audio ADC 103, converted into an MPEG format PS by the MPEG encoder 104, and the disc. Recording is performed on the DVD medium 108 inserted into the HDD 106 or the DVD drive 107 via the controller 105. The TV tuner 100 has a digital tuner unit that receives and selects a digital broadcast, and outputs a TS of the selected station. This TS is recorded in the HDD 106 via the disk controller 105. Such a recording process is controlled by software operating on the microcomputer 117.

Further, the disk controller 105 reads a PS or TS data stream from the DVD medium 108 inserted in the HDD 106 or the DVD drive 107 during information reproduction. This data stream is decoded by the MPEG decoder 109, the video signal is D / A converted by the video DAC 110, and the audio signal is D / A converted by the audio DAC 111, and provided from the video output terminal 112 and the audio output terminal 113, respectively. Is done. This video signal is displayed on, for example, a TV screen connected to the apparatus, and an audio signal is output from a speaker.
The microcomputer 117 can communicate with other devices connected by Ethernet using the Ethernet controller 115. In addition, this apparatus includes a timer microcomputer 114 that operates with a power supply system different from the microcomputer 117, and includes a key input unit 116 as a user operation means.

  The content dubbing process through the network of the video recording / playback apparatus according to the present invention will be described below.

  One embodiment of the present invention is a video recording / reproducing apparatus such as a personal computer, a DVD recorder, and an STB provided with communication means such as a network, and has a function of recognizing device-specific individual information of a receiving device via a network. . This video recording / playback apparatus also has a “net de-dubbing function” (hereinafter referred to as dubbing function A) or a “net de-dubbing HD function” (hereinafter referred to as “dubbing function A”) for performing content dubbing (transmission / reception) processing between devices. , Dubbing function B).

  The dubbing function A realizes Copy / Move processing for only PS copyable content via Ethernet.

  The dubbing function B performs encryption processing using DTCP-IP and realizes a move process for copy-prohibited content via Ethernet. In addition to this, this function also realizes copy / move processing of copyable content, and the content format such as PS or TS is not limited. A device on which the dubbing function B is installed also has a dubbing function A.

  When the devices as described above transmit and receive content via the network, the dubbing operation is determined in accordance with individual information of the receiving device (for example, dubbing function A supportability information). For example, when the receiving device has only the dubbing function A, the transmitting device transcodes the content data into a format that can be transmitted and received, and transmits and receives the content data.

  Hereinafter, the operation of the video recording / reproducing apparatus according to the embodiment of the present invention will be described in detail.

  FIG. 2 shows an operation flow on the transmission device side in content dubbing (transmission / reception) processing via the network in the video recording / playback apparatus shown in FIG.

  First, when dubbing content selection (step S01) is executed by a user key operation, the microcomputer 117 displays a dubbing content selection GUI. FIG. 3 shows an example of a GUI presented to the user when selecting dubbing content. In this example, the HDD 106 is selected. A representative image of the content recorded in the HDD 106 is displayed in the upper part of the bold line. When the user selects the desired content, the representative screen of the content is copied to the lower line of the bold line, and the selection is confirmed.

  In step S02, the microcomputer 117 acquires individual information of receivable devices. FIG. 4 shows a process for acquiring individual information of a device that can be received by a transmitting device via a network.

  In order to search for receivable devices on the network, the transmitting device searches for a receiving device using NetBIOS (S11), and receives a response from the receiving device (ST12). The response data at this time includes the manufacturer name, model number, model name, and the like of the receiving device. Thereafter, the receiving device requests the individual information 121 (S13), and the receiving device transmits the individual information 121 (S14). Here, the individual information includes DTCP-IP compatible (with net de-dubbing HD function) presence / absence information.

  Returning to the description of FIG. 2, in step S <b> 03, the microcomputer 117 presents a list of receiving devices to the user in a GUI display. FIG. 5 is an example of the receiving device list display (GUI) of FIG. In this receiving device list, the device names of devices connected via the network and the disk drives provided in each device are displayed.

  When the user selects a receiving device from the list of receiving devices (step S04), it is determined whether the content selected in step S01 can be transmitted / received by the receiving device selected in step S04 (step S05).

  In step S05, the process shifts in the Y direction when one of the transmission / reception devices is in a PS format in which content can be copied by a non-dubbing function B-equipped device, or both transmission / reception devices are dubbing function B-equipped devices. Is the case. Otherwise, the process moves in the N direction.

  If the content can be transmitted and received, a dubbing process is performed from the transmitting device to the receiving device via the network (step S06). If the content cannot be transmitted / received, it is determined whether or not the content is copy-prohibited (step S07). (Step S08) and dubbing the content (Step S06). If the content is copy-prohibited, the process ends without performing the dubbing process. When dubbing a plurality of contents, the contents to be added are selected again in step S01 before starting the dubbing process in step S06.

  FIG. 6 shows the transmission / reception patterns according to the dubbing functions A and B possessed by the receiving device and the transmitting device and the format (TS / PS) of the content to be dubbed.

  Function A is a function for transmitting and receiving PS content via the network. In the case of a device having the function A, only copyable PS content can be dubbed (Copy / Move). Therefore, if one or both of the transmission / reception devices are equipped with only function A as in conditions 1 to 3, if the dubbing target content is a copyable TS content, the dubbing target content is converted to the PS format. Code and dubb. If the content to be dubbed is PS, it is dubbed as it is.

  Function B is a function for transmitting and receiving TS content via the network. Devices equipped with function B are generally equipped with function A, and dubbing of both PS / TS contents is possible without transcoding. Therefore, when both the transmitting and receiving devices are equipped with the function B as in condition 4, the TS or PS content is dubbed as it is (it is not necessary to perform transcoding when dubbing). However, it is possible to perform transcoding and dubbing as necessary.

  As described above, according to the present invention, in content dubbing via a network between a plurality of video recording / playback apparatuses, TS content that could not be received conventionally is automatically transmitted by the transmitting device according to the receiving device. By transcoding and enabling dubbing, it is possible to improve the convenience of the video recording / reproducing apparatus.

  The above description is an embodiment of the present invention, and does not limit the apparatus and method of the present invention, and various modifications can be easily implemented.

It is a block diagram which shows an example of the video recording / reproducing apparatus which concerns on one Embodiment of this invention. It is a figure which shows the operation | movement flow by the side of the transmission apparatus in the content dubbing process. It is an example of GUI shown to a user when selecting dubbing content. It is a figure which shows the process which acquires the individual information of the receiving apparatus receivable via a network by the transmission apparatus side. It is a figure which shows the example of the receiving apparatus list display (GUI) of FIG. It is a figure which shows the transmission / reception pattern by the format (TS / PS) of the dubbing function A and B which a receiving device and a transmission device have, and the content for dubbing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... TV tuner, 102 ... Video ADC, 103 ... Audio ADC, 104 ... MPEG encoder, 105 ... Disk controller, 106 ... HDD, 107 ... DVD drive, 108 ... DVD media, 109 ... MPEG decoder, 110 ... Video DAC, 111 ... Audio DAC, 114 ... Timer microcomputer, 115 ... Ethernet controller, 117 ... Microcomputer.

Claims (7)

A video recording / playback apparatus for transmitting video content to a receiving device via a network,
Storage means for storing content;
Selecting means for selecting content stored in the storage means;
Means for obtaining device-specific solid information from the receiving device via the network;
Means for determining whether the selected content can be transmitted to the receiving device based on the solid information;
Transcoding means for transcoding the selected content and transmitting the selected content to the receiving device based on the solid-state information when the selected content cannot be transmitted to the receiving device;
A video recording / reproducing apparatus comprising:   2. The video recording / reproducing apparatus according to claim 1, wherein when the selected content is MPEG-TS, the transcoding means transcodes the content into MPEG-PS. The determination means determines whether the receiver is a DTCP-IP dubbing compatible device based on the solid information,
When the selected content is MPEG-TS and the receiver is a device that does not support DTCP-IP dubbing, the transcoding means transcodes the selected content into MPEG-PS. The video recording / reproducing apparatus according to claim 1. A content transmission method for transmitting video content to a receiving device via a network,
Selecting the content stored in the storage means (S01);
Obtaining device specific information from the receiving device via the network (S02);
Determining whether the selected content can be transmitted to the receiving device based on the solid information (S05);
If the selected content cannot be transmitted to the receiving device, transcoding the selected content based on the solid information and transmitting the selected content to the receiving device (S06 to S08);
A content transmission method comprising:   5. The content transmission method according to claim 4, wherein the transcoding step transcodes the content to MPEG-PS when the selected content is MPEG-TS. The determination step determines whether the receiver is a DTCP-IP dubbing compatible device based on the solid information,
When the selected content is MPEG-TS and the receiver is a device that does not support DTCP-IP dubbing, the transcoding step transcodes the selected content into MPEG-PS. The content transmission method according to claim 1. A content transmission system for transmitting video content from a transmission device to a reception device via a network,
The transmitting device is
Storage means for storing content;
Selecting means for selecting content stored in the storage means;
Means for acquiring device-specific solid information from the receiving device via the network;
Means for determining whether the selected content can be transmitted to the receiving device based on the solid information;
Transcoding means for transcoding the selected content to be transmitted to the receiving device based on the solid information when the selected content cannot be transmitted to the receiving device; and
The receiving device is
In response to a request from the acquisition means, the content transmission system transmits solid information indicating whether or not the receiving device is a DTCP-IP compatible device to the transmitting device.

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