JP2005310258A - Video voice signal reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set an optimal condition without increasing costs when using an HDMI connection TV and an analog voice connection amplifier. <P>SOLUTION: A video voice signal reproducing device has two settings for determining an HDMI output from HDMI connecting information and an analog output and determining a voice system by neglecting HDMI connecting voice information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a device that can reproduce video and audio, such as a DVD player, and has two outputs of HDMI output and analog output.

  In recent years, digital transmission of video signals is increasing in order to prevent deterioration due to analog transmission. Furthermore, a video / audio signal reproduction apparatus having an HDMI function for transmitting an audio signal in a gap between video signals is about to be released. HDMI not only does not cause signal deterioration due to digital transmission, but also has the feature of preventing illegal copying by reading the information of the connected device, matching the output format, and transmitting it after encryption.

  The function of reading the information of the connected device and matching the output format is convenient, but if there is only one audio output of the decoder, the analog output is also forcibly switched.

  For example, if you connect to an amplifier with 6-channel analog audio input and connect the video to a TV with HDMI, the TV generally has 2 channels of audio, so the output of the playback device is automatically set to 2 channels with HDMI. The output from is also limited to 2 channels.

  FIG. 2 shows a first example of HDMI connection. In FIG. 2, 21 is a television, 22 is an AV amplifier, 23 is a DVD player, and 24 is a speaker group. The DVD player 23 is connected to the AV amplifier 22 via HDMI, and the video output of the AV amplifier 22 is connected to the television 21. The speaker output of the AV amplifier 22 is connected to the speaker group 24. The DVD player 23 reads the connection destination information of the AV amplifier 22 and outputs the HDMI in a format suitable for the information. If the information of the AV amplifier 22 is 6 audio channels, the audio output of the DVD player 23 is automatically 6 channels.

  FIG. 3 shows a second example of HDMI connection. In FIG. 3, 31 is a television, 32 is an AV amplifier, 33 is a DVD player, and 34 is a speaker group. The DVD player 33 is connected to the television 31 via HDMI, and the analog audio output of the DVD player 33 is sent to the AV amplifier 32. The speaker output of the AV amplifier 32 is connected to the speaker group 24. The DVD player 33 reads information on the television to which the HDMI is connected, and outputs it on two channels because the television audio is two channels. Both the HDMI audio and the analog audio output from the DVD player 33 become two channels, and only two channels of sound are output from the speaker group connected from the AV amplifier.

  In order to avoid this, there is a method of mounting two decoders. FIG. 4 shows an example of a video / audio signal reproducing apparatus. In FIG. 4, reference numeral 41 is a first decoding means, 42 is a second decoding means, 43 is an HDMI output means, 44 is an analog audio output means, and 45 is a control means. The control means 45 reads the HDMI connection destination information, controls the first decoding means 41 so as to output audio in accordance with the information, and simultaneously controls the second decoding means 42 to decode irrespective of the HDMI connection destination information. . By this method, it is possible to output 6-channel sound from the speaker group even in the connection of FIG. However, since two decoding means are required, the cost becomes higher than that in the case of one decoding means.

  The problem to be solved is that when an HDMI-connected television and an analog audio-connected amplifier are used, it is not possible to set optimum conditions without increasing costs.

  In order to solve this problem, the video / audio signal reproducing apparatus of the present invention decodes a video / audio stream, decodes a digital audio output with one system and digital video output, and converts video / audio data from the decode means to HDMI. HDMI output means for transmission, analog audio output means for converting the audio data from the decoding means into analog signals and outputting, and control means for controlling the audio output of the decoding means by inputting HDMI connection destination information and settings And is configured to have two settings: a setting for determining the audio system for HDMI output and analog output according to the HDMI connection destination information, and a setting for determining the audio system by ignoring the audio information for the HDMI connection destination. .

  The present invention provides an excellent effect that, when an HDMI-connected television and an analog audio-connected amplifier are used, optimum conditions can be set without increasing the cost.

  According to the first aspect of the present invention, there is provided a decoding means for decoding a video / audio stream and having one system for digital audio output and a digital video output, and an HDMI output for transmitting video / audio data from the decoding means by HDMI. Means, analog audio output means for converting the audio data from the decoding means into an analog signal and outputting, and control means for controlling the audio output of the decoding means by inputting HDMI connection destination information and settings, It has two settings: the setting that determines the audio system for HDMI output and analog output based on the HDMI connection destination information input from the control means, and the setting that determines the audio system by ignoring the audio information of the HDMI connection destination. Because of this, when using a TV with HDMI connection and an amplifier with analog audio connection, it is optimal without cost increase. It is possible to set the conditions.

(Embodiment 1)
FIG. 1 is a block diagram of a video / audio signal reproduction apparatus according to an embodiment of the present invention. In FIG. 1, 1 is a decoding means for converting an input video / audio stream into a video signal and a digital audio signal, and 2 is an HDMI signal for generating an HDMI format signal from the video signal and the digital audio signal from the decoding means 1. The output means 3 is an analog audio output means for converting the digital audio signal from the decoding means 1 into an analog audio signal and outputting the analog audio signal. In this embodiment, the output analog audio signal is 6CH. It is not limited to. Reference numeral 4 denotes a control unit, and connection destination information and settings are input to the control unit 4 from the outside. The settings include “setting for determining the audio system for HDMI output and analog output according to HDMI connection destination information” and “setting for determining the audio system by ignoring the audio information of the HDMI connection destination”.

  The operation of the video / audio signal reproducing apparatus of the present embodiment configured as described above will be described below.

  First, the overall configuration will be described with reference to FIG.

  FIG. 3 shows an example of HDMI connection. In FIG. 3, reference numeral 31 denotes a television receiver (hereinafter referred to as a television) that displays an input video signal and outputs an audio signal, and 32 denotes an AV that performs signal processing such as amplification of the input audio signal. The amplifier 33 is a DVD player that is a playback device that loads a recording medium such as a DVD disk and reproduces a video / audio signal recorded on the recording medium. In this embodiment, the DVD player is used, but the present invention is not limited to this. However, the present invention is not limited to this as long as it can output a video / audio signal. Reference numeral 34 denotes a speaker group capable of acoustically outputting the audio signal output from the AV amplifier 32. In the present embodiment, six (six channel) speaker groups are used, but the number and the number of channels are not limited.

  The DVD player 33 is connected to the television 31 by HDMI, the analog audio output of the DVD player 33 is connected to the AV amplifier 32, and the speaker output of the AV amplifier 32 is connected to the speaker group 24. The DVD player 33 reads information on the television to which the HDMI is connected, and outputs it on two channels because the television audio is two channels. Both the HDMI audio and the analog audio output from the DVD player 33 become two channels, and only two channels of sound are output from the speaker group connected from the AV amplifier.

  Next, the internal configuration of the DVD player 33 will be described.

  First, in the case of “setting to determine the audio system of HDMI output and analog output by the HDMI connection destination information”, the control means 4 reads the HDMI connection destination information and controls the decoding means 1 so as to output the sound in accordance with the information. To do. The video / audio stream is input to the decoding unit 1, and the video output and digital audio output from the decoding unit 1 are converted into an HDMI signal by the HDMI output unit 2 and output. The digital audio output from the decoding unit 1 is connected to the analog audio output unit 3 and is output from the analog audio output unit 3. The analog audio output is determined by the HDMI connection destination information.

  Next, in the case of “setting for deciding the audio system by ignoring the audio information at the HDMI connection destination”, the control means 4 ignores the HDMI connection destination information, so the decoding means 1 decodes the input video / audio stream. The analog audio output means 3 outputs the analog audio as it is. In the case of the connection as shown in FIG. 3, if “the setting for deciding the audio system by ignoring the audio information of the HDMI connection destination” is set, the analog audio output of the DVD player 33 is output even if the television 31 has two channels. Since it is not limited to 2 channels, 6-channel sound is output from the speaker group 34.

  As described above, according to the present embodiment, when the HDMI-connected television 31 and the analog audio-connected amplifier 32 are used, optimum conditions can be set without increasing costs.

  The present invention has been described as a video / audio signal reproducing apparatus such as a DVD player. However, as long as at least a video signal and an audio signal are connected to other devices in the HDMI format, the application range is not limited to that of a DVD player. spread.

1 is a block diagram of a video / audio signal reproduction apparatus according to an embodiment of the present invention. Block diagram showing a first example of HDMI connection Block diagram showing a second example of HDMI connection Block diagram showing an example of a video / audio signal reproduction apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Decoding means 2 HDMI output means 3 Analog audio | voice output means 4 Control means 21 Television 22 AV amplifier 23 DVD player 24 Speaker group 31 Television 32 AV amplifier 33 DVD player 34 Speaker group

Claims (1)

Decoding means for decoding a video / audio stream and having one digital audio output and digital video output; HDMI output means for HDMI transmission of video / audio data from the decoding means; and analog audio data from the decoding means An analog audio output means for converting to a signal and outputting, and a control means for controlling the audio output of the decoding means by inputting HDMI connection destination information and settings, and the HDMI connection destination information inputted from the control means 2. A video / audio signal reproducing apparatus having two settings: a setting for determining an audio system for output and an analog output, and a setting for determining an audio system by ignoring audio information of an HDMI connection destination.

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