JP2007081764A - Content data output apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content data output apparatus capable of controlling the ON/OFF of a power source of a connected display apparatus in accordance with content data received via a network. <P>SOLUTION: The content data output apparatus includes: a separation means for separating the content data received from an input means into video data and audio data; a decode means for decoding the video data and the audio data separated by the separation means; a detection means for detecting the video data separated by the separation means; and a display apparatus control means for controlling the display apparatus connected to a video output means depending on a result of the detection by the detection means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a content data output device that outputs content data.

  2. Description of the Related Art Conventionally, there is a video display device including a playback unit that plays back video data and audio data recorded on a recording medium such as a CD (Compact Disc), and a display unit that displays the played back video data. In this video display device, when the recording medium to be played back by the playback unit is identified as a recording medium on which only audio data is recorded, the power of the display unit is automatically turned off to automatically consume power during playback of the audio data. Can be saved (see, for example, Patent Document 1).

JP-A-9-23127 (Claims 5 and 6)

  In the video display device disclosed in Patent Document 1, when video data and audio data (hereinafter referred to as content data) input via a network are reproduced, the content data is a stream obtained by multiplexing video data and audio data. Input as data via the network. Even if the input content data is stream data containing only audio data, the video display device disclosed in Patent Document 1 does not reproduce data recorded on a recording medium in the reproduction unit. In the identification method for identifying a recording medium on which only audio data is recorded, it is not possible to identify whether content data input via a network is only audio data.

  For this reason, the video display device disclosed in Patent Document 1 cannot automatically turn off the power of the display unit even if the content data input via the network is only audio data. Therefore, unless the user manually turns off the power of the display unit, power is supplied to the display unit and power is consumed. Therefore, power consumption during audio data reproduction cannot be reduced.

  The present invention has been made to solve the above-described problem, and provides a content data output device capable of controlling on / off of a display device in accordance with content data input via a network. For the purpose.

  In order to solve the above problems, the invention according to claim 1 of the present application includes an input means for inputting content data, and a separating means for separating the content data input from the input means into video data and audio data. Decoding means for decoding the video data and audio data separated by the separating means; detecting means for detecting the video data separated by the separating means; and video output for outputting the video data decoded by the decoding means Means, audio output means for outputting the audio data decoded by the decoding means, and display equipment control means for controlling the display equipment connected to the video output means according to the detection result of the detection means. It is characterized by that.

  The content data output device according to claim 1 of the present application is the content data output device according to claim 1, wherein the display device control means controls to turn on the display device when the detection means detects video data. It is characterized by doing.

  ADVANTAGE OF THE INVENTION According to this invention, the content data output device which can control ON / OFF of the power supply of a display apparatus according to the content data input via a network can be provided.

Embodiments of the present invention will be described below.
FIG. 1 is a block diagram showing a configuration of a content data output apparatus according to an embodiment of the present invention. In FIG. 1, 1 is an input unit, 2 is a data separation unit, 3 is a video decoder, 4 is a DAC (Digital to Analog Converter), 5 is a video output unit, 6 is an audio decoder, 7 is a DAC, and 8 is an audio output unit. , 9 indicates a video detection unit, and 10 indicates a display device control unit.

  FIG. 2 is a diagram showing an embodiment of a system having a content data output apparatus according to an embodiment of the present invention. In FIG. 2, 101 is a content data output apparatus of this embodiment, 102 is a display device, 103 is a speaker, 104 is a network, and 105 is a distribution server.

  The content data output apparatus 101 of this embodiment is connected to a network 104. The display device 102 is a television, a monitor, or the like, and displays an analog video signal input from the content data output device 101. The speaker 103 has a plurality of speakers and outputs an analog audio signal input from the content data output device 101. The distribution server 105 includes a storage device in which content data compressed by the MPEG (Moving Picture Experts Group) method or the like is stored.

  When an operation unit (not shown) provided in the content data output apparatus 101 of this embodiment performs an operation of selecting content data to be distributed from content data stored in the distribution server 105, the distribution server 105 causes the network 104 to be distributed. Distribution of the content data selected via is started. An input unit 1 illustrated in FIG. 1 includes an interface connected to the network 104 and inputs content data distributed from the distribution server 105 via the network 104.

  The data separation unit 2 determines the configuration of the stream data from the header information included in the stream data of the content data input from the input unit 1. The data separation unit 2 performs processing to separate the content data into video stream data and audio stream data based on the result of determining the configuration of the trim data. The separated video stream data is input to the video decoder 3 and the video detection unit 9, and the separated audio stream data is input to the audio decoder 6.

  In this embodiment, the stream data having a configuration determined by the data separation unit 2 is composed of stream data composed of video stream data and audio stream data, stream data composed only of video stream data, and audio stream data only. Stream data.

  The video decoder 3 decodes the video stream data input from the data separator 2. The DAC 4 converts the video stream data decoded by the video decoder 3 into an analog video signal. The analog video signal is output to the display device 102 via the video output unit 5.

  The audio decoder 6 decodes the audio stream data input from the data separation unit 3. The DAC 7 converts the audio stream data decoded by the audio decoder 6 into an analog audio signal. The analog audio signal is output to the speaker 103 via the audio output unit 8.

  The video detection unit 9 detects the presence or absence of the video stream data separated from the data separation unit 2. When the video stream data is input and the video stream data is detected, the video detection unit 9 detects the detection result data (“1” in this embodiment) indicating that the video stream data has been detected to the display device control unit 10. Output. On the other hand, when video stream data is not detected, the video detection unit outputs detection result data (“0” in the present embodiment) indicating that video stream data is not detected to the display device control unit 10.

  The video detection unit 2 detects video stream data when content data composed of video stream data and audio stream data or content data composed only of video stream data is input from the input unit 1. On the other hand, the video detection unit 2 does not detect video stream data when content data including only audio stream data is input from the input unit 1.

  The display device control unit 10 includes an output unit that outputs a control signal (for example, infrared rays) for turning on and off the power of the display device 102. In accordance with the detection result of the video stream data detected by the video detection unit 9, the display device control unit 10 outputs a control signal for controlling on / off of the power of the display device 102 connected to the video output unit 5. Therefore, the display device control unit 10 can control the power on / off of the display device 102 connected to the video output unit 5.

  When the detection result data input from the video detection unit 9 changes from “0” to “1”, that is, when the video detection unit 9 detects video stream data, the display device control unit 10 A control signal for turning on the power is output. On the other hand, when the detection result data input from the video detection unit 9 changes from “1” to “0”, that is, when the video stream data detected by the video detection unit 9 is not detected, display device control is performed. The unit 10 outputs a control signal for turning off the power of the display device 102.

  Next, another embodiment in which the display device control unit 10 turns on and off the power of the display device 102 will be described. An AC outlet for supplying power to the display device 102 is provided in the content data output apparatus of this embodiment, and the AC outlet and the display device 102 are connected by a cord.

  When the detection result data input from the video detection unit 9 changes from “1” to “0”, the display device control unit 10 performs control to stop the power supplied from the AC outlet to the display device 102. On the other hand, when the detection result data input from the video detection unit 9 changes from “0” to “1”, the display device control unit 10 performs control to start supplying power from the AC outlet to the display device 102.

  When the content data output apparatus according to the above-described embodiment detects video stream data from content data distributed via a network, the content data output apparatus controls to turn on the power of a display device that displays the video stream data. Further, when video stream data is no longer detected from content data distributed via the network, control is performed to turn off the power of the display device that is controlled to turn on.

  Therefore, the content data output apparatus of the present embodiment turns off the power of the display device when the video stream data is not output to the connected display device, so that the power consumed in the display device can be reduced. .

The block diagram which shows the structure of the content data output device of a present Example. The figure which shows one Example of the system which has a content data output device of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Input part, 2 ... Data separation part, 3 ... Video decoder, 4 ... DAC, 5 ... Video output part, 6 ... Audio decoder, 7 ... DAC, 8 ... Audio output part, 9 ... Video detection part, 10 ... Display Device control unit 101 ... Content data output device 102 ... Display device 103 ... Speaker 104 ... Network 105 ... Distribution server

Claims (2)

An input means for inputting content data;
Separating means for separating content data input from the input means into video data and audio data;
Decoding means for decoding video data and audio data separated by the separating means;
Detecting means for detecting the video data separated by the separating means;
Video output means for outputting the video data decoded by the decoding means;
Audio output means for outputting the audio data decoded by the decoding means;
A content data output device comprising: display device control means for controlling a display device connected to the video output means in accordance with a detection result of the detection means. The content data output device according to claim 1,
The content data output apparatus according to claim 1, wherein the display device control means controls to turn on the display device when the detection means detects video data.

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