JP2005175570A - Video audio output apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a conventional video audio output apparatus demands a user to switch settings of a format of the video audio output apparatus every time connection is changed when connection change takes place among a plurality of video display apparatuses or AV amplifiers. <P>SOLUTION: A video audio output apparatus disclosed herein reads EDID information from connected video display apparatus or an AV amplifier at application of power to the connected video display apparatus or AV amplifier, reads ID data, and automatically sets its format to the video audio format stored at previous connection when the ID is equal to a previously read ID. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a video / audio output device capable of reproducing a plurality of materials.

  In recent years, the demand for DVD has increased significantly, and accordingly, the demand for video / audio output devices such as DVD players and DVD recorders has also increased rapidly. There are also a wide variety of video display devices and AV amplifier devices connected to video / audio output devices such as DVD players. When connecting to a video / audio output device, it is necessary to first set the format for the video and audio planes. For example, format settings such as interlace and progressive playback on the video side, formats such as 2ch and 5.1ch output on the audio side, cinema mode, music mode, classic mode, and the like need to be set. Nowadays, more and more people enjoy video and audio at home in a movie theater-like environment (home theater), and users demand high image quality and high sound quality. If you set the wrong format on the audio / video output device or AV amplifier device, you can take advantage of the performance of the equipment, such as watching video with interlaced settings, even if you set progressive settings to see high quality images. There are many cases where it is utilized without being able to understand.

  In terms of audio, 5.1ch surround systems are increasing, and when installing 5.1ch speakers, if the room is large, the distance between the speakers and the listener should be the best. Although it is preferable, few people can listen in a large room. Therefore, an optimum space is created by adjusting the gain of each speaker on the screen of the video output device. When the video / audio output device is used in another room, the format is reset. It is very difficult for the user to set the gain of the speaker and create the same optimal space again.

  Normally, when the audio output device is fixed and connected to a video display device or AV amplifier device, the format is set once, and then it is not necessary to change the format setting. When the connected video display device or AV amplifier device is changed, it is necessary to reset the format to an optimum state.

  Until now, there has been an invention that alleviates the troublesome and troublesome task of re-setting such a format. However, a device that outputs video signals of a plurality of formats selects the format of the video signal to be output based on the deflection frequency information of the connected television receiver. In addition, the audio format cannot be set (see Patent Document 1).

However, since the format is determined by the connected television receiver, it is not certain whether the format is intended by the user. If the format is not what was intended, the user will need to reconfigure the format. The current situation is that the environment desired by the user cannot be obtained unless the format is set depending on the connected device.
JP 2001-111914 A

  The problem to be solved is a video / audio output device that has been used in the past. When a connection change occurs between a plurality of video display devices or AV amplifier devices, the user must change the connection of the video / audio signal output device every time the connection is changed. It is necessary to switch the format setting.

  The video / audio output device of the present invention reads EDID information from a connected device and reads ID data when the connected video display device or AV amplifier device is powered on. EDID is an abbreviation for Extended Display Identification Data. It is an ID unique to the monitor that conveys the model name and setting value of the monitor to the PC. For the purpose of exchanging information between the host and the monitor and displaying it at an appropriate resolution. is. If the EDID that sets the resolution according to the display capability of the sink device is an ID that has been read before, it can be automatically set to the video and audio format stored when it was previously connected, and it must be an ID that has not been read before. For example, by outputting a new format screen and having the user set it, the video and audio formats are automatically set if the device has been set once.

  If the video / audio output device of the present invention is a video display device or AV amplifier device that has been connected before, it is not necessary to set the video / audio format again, and it is connected to the video / audio device and turned on. There is an advantage that it is possible to automatically reset to the state of the previously set format at the moment.

  FIG. 1 is a block diagram of video / audio output means for implementing the present apparatus. In FIG. 1, 1 represents the entire video / audio output apparatus, 2 is video output means for outputting input video data, and 3 is Audio output means for outputting input audio data, 4 is ID data detection means for detecting ID data from a connected video display device or AV amplifier device, and 5 is ID data previously detected and newly obtained ID data Is a memory input / output means for inputting previously detected data into the memory and outputting new ID data to the memory, and 7 is in the memory for ID data from the video display device or AV amplifier device. ID comparison means for comparing previous ID data, 8 is a format management means for managing the format based on the compared ID data, and 9 is power ON / OFF Timing instruction means for detecting the power ON / OFF information of the video display apparatus and AV amplifier apparatus connected to the information and giving a signal to the 11 format instruction means, 10 is a new video display apparatus and AV amplifier apparatus to be connected Menu output means is configured to display a setting screen when it occurs.

The operation of the video / audio output apparatus configured as described above will be described below.
When the video and audio output formats are not set (initial state), the input video data and audio data are output in the initial format by the 2 video output means and the 3 audio output means. Is done.

  In the present invention, EDID information is read from the connected receiver, and ID data of the currently connected device is detected by the ID data detection means 4. In order to determine whether or not the detected ID data has been connected before, the ID data previously connected is taken out from the memory 5, and the ID data is passed from the memory input / output means 6 to the ID comparison means 7, and the current connection is made. Compare the ID data stored in the memory with the ID data from the memory. Therefore, if the data was previously connected, the format information sent to the video output means 2 and the audio output means 3 is sent to the video output means 2 and the audio output means 3 when the format management means 8 was previously connected. Output. If the receiver has not been connected before by the ID comparison means 7, the menu output means 10 outputs a format setting screen and sends the set format data to the video output means 2 and the audio output means 3. Video data and audio data are output.

  Further, there is timing instruction means 9 for instructing the timing for comparing the ID data of the connected video display device and AV amplifier device as described above, and information indicating that the power of the video / audio output device 1 is ON or OFF. Since the ID comparison is performed when both the power supplies are turned on based on the information indicating that the power supply of the connected video display device or AV amplifier device is turned on or off, the format is always set properly and the optimum state is set. Format can be maintained.

  Furthermore, when the power of the video / audio output device 1 or the connected video display device or AV amplifier device is switched from ON to OFF, the video / audio output device is turned off while maintaining the format information set when the power is turned on. When the power is turned on again and connected to the video display device or AV amplifier, it is output in the set format.

  The video / audio output device according to the present invention can automatically set a previously connected format using ID data obtained from a connected video display device, AV amplifier device, etc. It can be used for devices that set the format when linking with devices.

Configuration diagram of video / audio output apparatus of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Video / audio output device 2 Video | video output means 3 Audio | voice output means 4 ID detection means 5 Memory 6 Memory input / output means 7 ID comparison means 8 Format management means 9 Timing instruction means 10 Menu output means

Claims (3)

Data detection means for inputting data obtained from a connected device, storage means for storing the data, input / output means for reading and outputting the data obtained at the previous connection from the storage means, and the data A comparison means for comparing the output of the detection means and the output of the input / output means to determine whether the apparatus has been connected last time; and receiving a video / audio signal from a medium containing a video / audio signal such as a DVD or CD; A video / audio output apparatus comprising: video output means and audio output means for decoding and outputting video and audio; and format instruction means for determining video and audio output data. 2. The video / audio output apparatus according to claim 1, further comprising timing instruction means for determining and storing a video / audio format based on power supply ON / OFF information of the connection apparatus. 2. The video / audio output apparatus according to claim 1, further comprising menu output means for outputting a menu screen for format setting when the apparatus is newly connected.

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