JP2009200788A - Receiver - Google Patents

Abstract

【Task】
Video / audio data is received via the HDMI terminal from the video / audio transmission apparatus connected to both the LAN terminal and the HDMI terminal.
[Solution]
It is checked whether or not the video / audio transmission device is connected to the HDMI terminal (26, 28). If the video / audio transmission device is connected, an IP address request command is transmitted from the HDMI terminal (26, 28). The LAN side IP address is acquired and stored. A DLNA device of the network connected to the LAN terminal (24) is detected. It is checked whether the IP address of the DLNA device selected by the user matches the previously stored IP address. If they match, the video / audio data is received from the video / audio transmission device via the HDMI terminal (26, 28).
[Selection] Figure 1

Description

  The present invention relates to a receiving apparatus that receives digital data such as video and audio.

  Conventionally, digital televisions that receive digital broadcasts such as terrestrial digital broadcasts are known. As a usage of digital television, it is common to display a video of a received broadcast program. However, it is also possible to connect an external video / audio device such as a video camera, a DVD recorder, or an HDD recorder and reproduce and output video / audio from the external video / audio device.

  HDMI (High-Definition Multimedia Interface) is known as an interface for connecting a digital television and an external video / audio device (for example, see Patent Document 1). A command for controlling an external video / audio device connected from the digital television to the HDMI, that is, a CEC (Consumer Electronics Control) command is also implemented in the HDMI.

In addition, as a method for connecting a digital TV and an external video / audio device, DLNA (Digital Living Network Alliance) using an IP network of a home LAN has become widespread. In DLNA, there are a digital media server (Digital Media Server) that provides content including video and audio, and a digital media player (Digital Media Player) that reproduces and outputs the content. Since the external video / audio device operates as a digital media server and the digital television operates as a digital media player, video / audio of the external video / audio device can be reproduced and output from the digital television.
JP 2006-319502 A

  When HDMI and DLNA are widespread, it is conceivable that a digital TV has both HDMI and DLNA interfaces.

  When an external video / audio device is connected to a digital television by both HDMI and DLNA, if the network bandwidth is used by another network device, there is a problem that the content cannot be played back by DLNA.

  In the case of via DLNA, operations on content may be limited.

  An object of the present invention is to provide a receiving apparatus that eliminates such inconveniences.

  The receiving apparatus according to the present invention is a receiving apparatus having a network interface and a digital interface for transmitting video / audio data, and means for detecting a video / audio transmitting apparatus in a network connected to the network interface; Means for detecting a video / audio transmission device connected to the digital interface; reception means for receiving and processing video / audio data from the digital interface and video / audio data from the network interface; and Even when connected via the digital interface, the video / audio data is received from the video / audio transmission device via the digital interface, and the video / audio data is received. Control means for controlling the network interface and the digital interface so as to receive data via the network interface when the transmitting device is not connected to the digital interface but connected via the network interface It is characterized by comprising.

  According to the present invention, when audio / video data can be received via either a network or a digital interface, the audio / video data can be stably received via the digital interface.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a digital television incorporating an embodiment of a receiving apparatus according to the present invention. FIG. 2 is a block diagram showing an example of a connection form between the digital television shown in FIG. 1 and an external video / audio device.

  The digital television 10 includes an antenna 12 that receives digital broadcast waves, a tuner 14, a display unit 16 that displays images, and a speaker 18 that outputs sound. A digital signal processing circuit (DSP) 20 reprocesses the received television signal from the tuner 14 and outputs a video signal to the display unit 16 and an audio signal to the speaker 18. The digital television 10 further includes a remote control receiver 22 that receives a remote control signal from the remote controller 32, a LAN (Local Area Network) terminal 24, and two HDMI terminals 26 and 28. The CPU 30 controls the tuner 14 in accordance with the remote control signal from the remote control 32 received by the remote control receiving unit 22. The CPU 30 can also communicate with an external device via the LAN terminal 24, and can also communicate with the external device via the HDMI terminals 26 and 28 as described above. The LAN terminal 24 is a so-called network interface. The HDMI terminals 26 and 28 are digital interfaces for transmitting video / audio data.

  The DSP 20 can process the video / audio data from the HDMI terminal 26 or 28 and output the video signal to the display unit 16 and the audio signal to the speaker 18. The CPU 30 cooperates with the DSP 20 to function as receiving means for receiving and processing video / audio data from the LAN terminal 24 and the HDMI terminals 26 and 28.

An HDD recorder 42 and a video camera 44 can be connected to the digital television 10 shown in FIG. 1 with the configuration shown in FIG. The LAN terminal 24 of the digital television 10 is connected to the LAN hub 40 via a LAN cable. Further, an HDD recorder 42, a video camera 44, and a media server 46 are connected to the hub 40 via LAN cables. The digital television 10, HDD recorder 42, video camera 44, and media server 46 belong to the same LAN. The video / audio output terminal of the HDD recorder is connected to the HDMI terminal 26 of the digital television 10 via an HDMI cable. The video / audio output terminal of the video camera 44 is connected to the HDMI terminal 28 of the digital television 10 via an HDMI cable. The media server 46 is, for example, a personal computer having a DLNA digital media server function or a network-connected hard disk.

  The digital television 10 can select the HDD recorder 42 connected to the HDMI terminal 26 or the video camera 44 connected to the HDMI terminal 28 as a video / audio source by an input switching operation. When the DLNA mode is selected from a menu or the like, the HDD recorder 42, the video camera 44, and the media server 46 are detected via the LAN, and the contents of the HDD recorder 42, the video camera 44, and the media server 46 are displayed on the display unit 16. Can do. Of course, it is assumed that the HDD recorder 42 and the video camera 44 support playback / output of video / audio data via the LAN.

  When viewing the broadcast wave on the digital television 10, the tuner 14 demodulates the terrestrial digital broadcast wave received by the antenna 12 and supplies the received data of the designated channel to the DSP 20. The DSP 20 decodes data from the tuner 14 to reproduce video data and audio data, and outputs them to the display unit 16 and the speaker 18, respectively. As a result, the video of the desired channel is displayed on the screen of the display unit 16 and the sound is output from the speaker 18.

  When playing back content stored in the media server 46 connected to the network, the user operates the remote controller 32 to display an operation menu or the like on the display unit 16 and switches to the DLNA mode. The CPU 30 detects a media server on the LAN to which the LAN terminal 24 is connected (in the example shown in FIG. 2, the media server 46), and displays a list of detected media servers on the display unit 16. The user selects or designates a target device from the displayed list of media servers. The CPU 30 communicates with a playback device according to the user's selection via the LAN terminal 24 and acquires a content list (video / audio information list) from the playback device. The acquired content list is displayed on the display unit 16. The user selects or specifies one or a plurality of contents to be reproduced from the content list with the remote controller 32. The CPU 30 requests the playback device to play back the selected content via the LAN terminal 24 and acquires the content data. The DSP 20 decodes the acquired content data, and supplies video data of the content to the display unit 16 and audio data to the speaker 18. Thereby, the video of the selected content from the selected playback device is displayed on the display unit 16, and sound is output from the speaker 18.

  When playing back content of an external video / audio device connected to the HDMI terminals 26 and 28, the user operates the remote controller 32 to display an external connection device list menu or the like on the display unit 16, and plays back the playback device from the displayed device list. Select. The CPU 30 switches to the HDMI terminal 26 or 28 to which the selected external video / audio device is connected. As a result, video / audio data from the selected external video / audio device is input to the DSP 20. The DSP 20 reproduces the input video / audio data, and supplies the video signal to the display unit 16 and the audio signal to the speaker 18. As a result, video from the selected external video / audio device is displayed on the display unit 16, and audio is output from the speaker 18.

  With reference to FIG. 3, the characteristic operation as a receiving apparatus in the present embodiment will be described. FIG. 3 shows a flowchart of the characteristic operation of this embodiment.

  When the digital television 10 is switched to the DLNA mode by the user's remote control operation, the flow shown in FIG. 3 starts.

  It is checked whether an external device that is a video / audio transmission device is connected to the HDMI terminal 26 (S1). When connected (S1), an IP address request command is transmitted from the HDMI terminal 26 to the external device, and the IP address (network address) on the LAN side of the external device is acquired (S2). Vendor Specific Commands are defined in the CEC of HDMI, and device control and communication unique to the vendor can be performed. Using this function, the IP address can be acquired from the external device as the identification information of the external device. When the IP address can be acquired, the CPU 30 stores the IP address as the IP address 1 of the external device (HDD recorder 42 in FIG. 2) connected to the HDMI terminal 26. An external device that does not support the CEC function or an external device that does not support the Vendor Specific Commands cannot acquire an IP address. In this case, for example, a dummy IP address such as “0.0.0.0” is stored.

  For the HDMI terminal 28, the IP address of the external device connected to the HDMI terminal 28 is acquired by the same processing (S3, S4). The acquired IP address or dummy IP address is stored as IP address 2.

  Next, a DLNA device connected to the LAN is detected according to a procedure defined by DLNA (S5), and the detected DLNA device is displayed on the display unit 16 (S6). The user selects a DLNA device to be connected from the displayed device list using the remote controller 32 (S7).

  It is checked whether or not the IP address of the selected DLNA device matches the previously stored IP address 1 (S8). If they match (S8), the HDMI terminal 26 is switched for input (S9). In this state, the operation of the external video / audio device (HDD recorder 42 in the example shown in FIG. 2) is controlled via the HDMI terminal 26. Thereby, the video / audio from the HDD recorder 42 is reproduced and output.

  If they do not match (S8), it is checked whether or not the IP address of the selected DLNA device matches the previously stored IP address 2 (S10). If they match (S10), the input is switched to the HDMI terminal 28 (S11). In this state, the operation of the external video / audio device (video camera 44 in the example shown in FIG. 2) is controlled via the HDMI terminal 28. As a result, the video / audio from the video camera 44 is reproduced and output.

  If the IP address 2 does not match (S10), the digital television 10 functions as a digital media player (S12). That is, the CPU 30 acquires the video / audio data of the external device selected by the user via the LAN terminal 24 and supplies it to the DSP 20. As described above, the DSP 20 reproduces the video / audio data and supplies the video signal to the display unit 16 and the audio signal to the speaker 18. Thereby, the digital television 10 receives and reproduces the video / audio data of the selected external device via the network.

  FIG. 4 shows another operation flowchart as the receiving apparatus of the embodiment shown in FIG. When the digital television 10 is switched to the DLNA mode by the user's remote control operation, the flow shown in FIG. 4 starts.

  First, a DLNA device connected to the LAN is detected according to a procedure defined by DLNA (S21), and the detected DLNA device is displayed on the display unit 16 (S22). The user selects a DLNA device to be connected from the displayed device list with the remote controller 32 (S23). Logical address information (digital interface address) as the HDMI device is acquired from the selected DLNA device (S24).

  In the HDMI standard, a unique logical address on the HDMI bus is assigned to the connected HDMI device, and the logical address is acquired and stored. With DLNA, various information can be acquired from a DLNA device in XML format. For example, by setting a logical address as an HDMI device as metadata in XML data, this logical address can be acquired as identification information of the external device. When the selected DLNA device is not connected to the HDMI terminal, for example, a logical address value that is not used in HDMI is stored as a dummy logical address value.

  It is determined whether or not the logical address stored in step S24 matches the logical address of the external device connected to the HDMI terminal 26 (S25). If they match (S25), a message for inquiring the user to switch from the DLNA to the HDMI terminal 26 is displayed on the display unit 16 (S26). When the user permits switching to the HDMI terminal 26 (S27), switching to video / audio input from the HDMI terminal 26 is performed (S28). If the user does not permit switching to the HDMI terminal 26 (S27), reproduction processing by the digital media player via the LAN according to DLNA is executed (S33).

  If the logical address stored in step S24 does not match the logical address of the external device connected to the HDMI terminal 26 (S25), whether or not it matches the logical address of the external device connected to the HDMI terminal 28 is determined. Determine (S29). If they match (S29), a message for inquiring the user to switch from the DLNA to the HDMI terminal 28 is displayed on the display unit 16 (S30). When the user permits switching to the HDMI terminal 28 (S31), switching to video / audio input from the HDMI terminal 28 is performed (S32). If the user does not permit switching to the HDMI terminal 28 (S31), reproduction processing by the digital media player via the LAN according to DLNA is executed (S33).

  If the logical address stored in step S24 does not match the logical address of the external device connected to the HDMI terminal 28 (S29), the selected DLNA device is not connected to either of the HDMI terminals 26 and 28. become. At this time, reproduction processing by the digital media player via the LAN according to DLNA is executed (S33).

  FIG. 5 shows still another operation flowchart as the receiving apparatus of the embodiment shown in FIG. When the digital television 10 is switched to the DLNA mode by the user's remote control operation, the flow shown in FIG. 5 starts. 3 differs from FIG. 3 in that a device name is used instead of an IP address.

  It is checked whether or not an external device is connected to the HDMI terminal 26 (S41). When connected (S41), a device name request command is transmitted from the HDMI terminal 26 to the external device, and the device name of the external device is acquired as identification information (S42). In the HDMI CEC, Device OSD Name Transfer is defined, and a device name can be acquired using this function. When the device name can be acquired, the CPU 30 stores the device name of the external device (HDD recorder 42 in FIG. 2) connected to the HDMI terminal 26 as the device name 1. A dummy device name is stored in an external device that does not support the CEC function or an external device that does not support the Device OSD Name Transfer.

  For the HDMI terminal 28, the device name of the external device connected to the HDMI terminal 28 is acquired by similar processing (S43, S44). The acquired device name or dummy device name is stored as device name 2.

  Next, a DLNA device connected to the LAN is detected according to a procedure defined by DLNA (S45), and the detected DLNA device is displayed on the display unit 16 (S46). The user selects a DLNA device to be connected from the displayed device list using the remote controller 32 (S47).

  It is checked whether or not the device name of the selected DLNA device matches the device name 1 stored previously (S48). If they match (S48), the input terminal is switched to the HDMI terminal 26 for input (S49). In this state, the operation of the external video / audio device (HDD recorder 42 in the example shown in FIG. 2) is controlled via the HDMI terminal 26. Thereby, the video / audio from the HDD recorder 42 is reproduced and output.

  If they do not match (S48), it is checked whether or not the device name of the selected DLNA device matches the previously stored device name 2 (S50). If they match (S50), the input is switched to the HDMI terminal 28 (S51). In this state, the operation of the external video / audio device (video camera 44 in the example shown in FIG. 2) is controlled via the HDMI terminal 28. As a result, the video / audio from the video camera 44 is reproduced and output.

  If the device name 2 does not match (S50), the digital television 10 functions as a digital media player (S52). That is, the CPU 30 acquires the video / audio data of the external device selected by the user via the LAN terminal 24 and supplies it to the DSP 20. As described above, the DSP 20 reproduces the video / audio data and supplies the video signal to the display unit 16 and the audio signal to the speaker 18. Thereby, the digital television 10 receives and reproduces the video / audio data of the selected external device via the network.

  Although an apparatus for receiving video data and audio data integrally has been described, the present invention can be applied to the case of receiving only video data or the case of receiving only audio data. In other words, the video and audio in this specification includes both cases of only video, audio only, and video and audio.

It is a schematic block diagram of one Example of this invention. 1 is a block diagram of a configuration in which two external devices are connected to the digital television 10 of the present embodiment. It is a flowchart of the characteristic operation | movement of a present Example. It is a 2nd flowchart of the characteristic operation | movement of a present Example. It is a 3rd flowchart of the characteristic operation | movement of a present Example.

Explanation of symbols

10: Digital TV 12: Antenna 14: Tuner 16: Display 18: Speaker 20: Digital signal processing circuit (DSP)
22: Remote control receiver 24: LAN terminal 26, 28: HDMI terminal 30: CPU
32: Remote control 40: Hub 42: HDD recorder 44: Video camera 46: Media server

Claims (7)

A receiving device having a network interface and a digital interface for transmission of video and audio data,
Means for detecting a video / audio transmission device in a network connected to the network interface;
Means for detecting a video / audio transmission device connected to the digital interface;
Receiving means for receiving and processing video / audio data from the digital interface and video / audio data from the network interface;
Even when the video / audio transmission device is connected via the network interface, if the video / audio transmission device is connected to the digital interface, the video / audio data is received from the video / audio transmission device via the digital interface. When the video / audio transmission apparatus is not connected to the digital interface but connected via the network interface, the network interface and the digital interface are configured to receive data via the network interface. And a control means for controlling the receiver.   The control means controls the video / audio transmission device via the digital interface when the video / audio transmission device is connected to the digital interface, and the video / audio transmission device is connected to the digital interface. 2. The receiving apparatus according to claim 1, wherein if there is not, the video / audio transmitting apparatus is controlled via the network interface.   When a plurality of video / audio transmission devices are detected in the network, one video / audio transmission device is designated, and when there is a plurality of video / audio information in the one video / audio transmission device, the video / audio to be received The receiving apparatus according to claim 1, further comprising a specifying unit that specifies information. The control means includes
Means for acquiring identification information of a video / audio transmission device connected to the digital interface via the digital interface;
Means for acquiring identification information of a video / audio transmission device connected to the network interface via the network interface;
Means for detecting the video / audio transmission device connected to the digital interface and the network interface from the identification information acquired via the digital interface and the identification information acquired via the network interface. The receiving apparatus according to claim 1, wherein the receiving apparatus is characterized.   The receiving apparatus according to claim 4, wherein the identification information is a network address, a digital interface address, or a device name. The control means includes
Means for obtaining a network address from a video / audio transmission device connected to the digital interface via the digital interface;
4. The reception according to claim 1, further comprising: means for detecting whether or not the video / audio transmission device having the acquired network address is connected to the network interface. 5. apparatus. The control means includes
Means for obtaining identification information consisting of a device name or a digital interface address from a video / audio transmission device connected to the network interface via the network interface;
4. The reception according to claim 1, further comprising means for detecting whether or not the video / audio transmission device having the acquired identification information is connected to the digital interface. apparatus.

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