JP2008048337A - Video recording and reproducing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video recording and reproducing system in which a DVD can be viewed without performing complicated operation, by obviating language setting when reproducing the DVD, by connecting devices via an HDMI cable. <P>SOLUTION: In the video recording and reproducing system, a plurality of devices each including a reproduction function are connected with a display device for reproducing video and audio from the devices thereon via the HDMI standard compliant HDMI cable. The device transmits to the display device language information set by initial setting (at least one of voice language setting, caption language setting and menu language setting) and in reproduction, language setting is performed by acquiring the language information stored in the display device. The display device stores the language information sent from the device and transmits the stored language information to the device when there is a reproduction request from the device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recording / playback system, and in particular, in a recording / playback system using a playback device or display device compatible with HDMI / CEC (High-Definition Multimedia Interface / Consumer Electronics Control), an initial language such as an audio language, a caption language, a menu language, etc. The present invention relates to a technique for eliminating the complexity of setting.

  In recent years, DVDs (Digital Versatile Discs) have become widespread due to the convenience of being able to record large amounts of data. Among DVDs, there are DVD videos that record movies and the like, and movies can be enjoyed with high image quality and high sound quality even at home.

  In the DVD standard, a maximum of 8 languages can be recorded as audio languages and a maximum of 32 languages as subtitle languages (sub-pictures). Further, in the DVD standard, when a plurality of audio languages and subtitle languages are recorded on a DVD disc (a disc manufactured according to the DVD standard), the audio / subtitle information set in the player is recorded on the DVD disc. If it is included, playback is defined to be performed according to the audio / subtitle information set for the player.

  Audio, subtitles, and menus are recorded on tracks by language. For example, when the content recorded on a DVD is a movie, audio is recorded on a track for each language such as English, Japanese, French. The user selects a favorite language from these languages, and the DVD playback apparatus plays back the audio in the selected language. Also, subtitles are recorded for each language such as English, Japanese, French, Spanish, etc., and the DVD playback device can display subtitles in the selected language or hide subtitles. Since menus are also recorded for each language, it is possible to display menus written in characters of the selected language.

  Usually, there is a mode for performing initial setting of the playback device. In this mode, the audio language setting, the subtitle language setting, and the menu language setting are performed, and the setting state is stored in the playback device. When a DVD is reproduced, it is determined whether or not the set language is recorded on the disc. If the language is recorded, the audio corresponding to the language is reproduced.

  However, when another playback device is used, the audio language, subtitle language, menu language, and the like must be set again. However, in Patent Document 1, the language-related settings of the already set audio are set to the TV tuner or This is automatically reflected in the received audio settings of the single TV tuner unit connected via the IEEE 1394 interface.

  Recently, as a digital interface standard for next-generation televisions, a high-definition multimedia interface (HDMI) standard has been established (see Non-Patent Document 1). This HDMI is arranged for AV equipment such as adding an audio transmission function, a copyright protection function, and a color difference transmission function to DVI (Digital Visual Interface). Conventionally, a plurality of cables are used for video / audio / control signals for connection between devices, but HDMI requires only one HDMI cable, and there is a merit that wiring of troublesome AV devices can be simplified. .

  In addition, TMDS (Transition Minimized Differential Signaling) is used for the physical layer, HDCP (High-bandwidth Digital Contents Protection) is used as an anti-fraud function, EDID (Extended Display Identification Data) is used for inter-device authentication, and the control system for the entire system. CEC (Consumer Electronics Control) is adopted for connection. With this CEC, for example, the entire AV system can be operated with a single remote control by relaying control signals from a TV to an AV device such as an STB (Set-Top Box) or DVD player connected via HDMI. It has become.

Among these, CEC is described in the Supplement 1 of the HDMI standard document. Recommended functions that can be used for CEC, definitions of electrical characteristics, signals and bit timing, header / data blocks, etc., and rules for communication between devices Etc. are explained.
JP 2002-335491 A (paragraph 0081, FIG. 1, FIG. 8) Hitachi, Ltd, et al. “High-Definition Multimedia Interface Specification Version 1.3”, [online], June 22, 2006, HDMI Licensing, LLC [searched June 29, 2006], Internet <URL: http: / /www.hdmi.org/manufacturers/download.asp>

  In the above Patent Document 1, “Language setting used for playback is used for recording” or “Language setting used for recording is used for tuner” is used. It is stored, and it is necessary to connect the device for which language setting has been performed first and the device using the language setting.

For this reason, the operation starts with the initial setting of the DVD player or the like, and if it is different from the desired language setting, it is necessary to change the language setting using the remote control of the DVD player.
Furthermore, when changing the setting using the remote control, playback must be stopped once, and even if it is set once, it is set again when the power of the player is turned off or the DVD is replaced. There was a need to do.
For example, even if it is determined that a foreign movie is viewed in subtitles, it is necessary to set it every time.

  The present invention has been made in consideration of the above-described circumstances, and by connecting devices with HDMI, language setting at the time of DVD playback becomes unnecessary, and a DVD can be viewed without performing any troublesome operations. It is an object of the present invention to provide a recording / playback system that can perform recording.

In order to solve the above problems, the present invention has the following configuration.
The recording / playback system of the present invention is a recording / playback system in which a plurality of devices having a playback function and a display device for playing back video and audio from the devices are connected via an HDMI cable compliant with the HDMI standard.
The device transmits the language information set in the initial setting to the display device and reproduces it, obtains the language information stored in the display device, sets the language,
The display device stores language information sent from the device, and transmits the stored language information to the device when a reproduction request is received from the device.

Here, the initial setting is at least one of audio language setting, subtitle language setting, and menu language setting.
In addition, the initial setting in the device is performed when language setting has not yet been performed on the display device or when a language setting instruction is received from the user.

  In addition, as a device or display device having the above-described configuration, a program for causing a computer to function is created, or the program is recorded on a computer-readable recording medium, and this program is stored in the device or the display device. The above problem can also be solved by executing the program with a computer provided.

According to the present invention, the audio language, subtitle language, and menu language settings that are performed each time a DVD is played are not required, and the DVD can be viewed without performing any troublesome operations.
Further, once the language setting is performed, the same language setting is not repeatedly performed on a plurality of devices.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to a recording / playback system of the invention will be described with reference to the drawings.

  FIG. 1 shows an example of a recording / playback system according to this embodiment. In this recording / playback system, a display device and a device including a plurality of playback devices are connected via an HDMI cable conforming to the HDMI standard. For example, there is a television receiver as a display device, and devices connected to the display device include an AV amplifier, a player, a recorder, and the like, all of which comply with the HDMI standard (see Non-Patent Document 1). HDMI connector is provided.

  In FIG. 1, there are two branches from the display device, one of which is connected to the AV amplifier 1. The recorder 1 is connected to another branch from the display device. There are two branches from the recorder 1, one of which is connected to the player 1. The other branch from the recorder 1 is connected to the player 2 and further connected to the recorder.

If the device is a player, the digital video signal and digital audio signal supplied from the device are received by the display device via the HDMI cable. When the device is a recorder, a digital video signal and a digital audio signal supplied from the display device are received by a desired device via an HDMI cable and recorded on a recording medium or the like.
Also, this HDMI cable transmits and receives not only digital video signals and digital audio signals but also control signals based on the CEC protocol. In addition, the display device and each device are normally in a standby mode, and a signal can be sent to a device ahead even if there is a device that is not turned on.

FIG. 2 is a block diagram showing the configuration of the recording / playback system according to the present embodiment. The display device 10 has a function of receiving an input other than HDMI, for example, a television broadcast signal, and a function of transmitting and receiving a digital signal and a control signal compliant with the HDMI standard. The playback device 30 is directly connected by an HDMI cable. However, other devices are connected by an HDMI cable, and the display device 10 and the playback device 30 are indirectly connected by an HDMI cable. It doesn't matter.
Furthermore, although the recording / playback system of the present embodiment will be described by taking a playback device as an example, recording / playback devices having a playback function may be mixed.

For example, a television broadcast signal input other than via an HDMI cable is received by an antenna and supplied to the signal processing unit 12 via the input terminal 11. That is, the signal processing unit 12 extracts a signal of a predetermined channel from the input television broadcast signal by the tuner unit, restores the video signal and the audio signal, and outputs them to the selection unit 13.
Here, a device (recorder or player) connected by other than the MDMI cable may be connected to the input terminal 11 to input video and audio signals from these devices.

  A digital signal supplied from the playback device 30 via the HDMI cable is received by the HDMI connector 20 and supplied to the HDMI signal processing unit 21. The HDMI signal processing unit 21 restores the video signal and the audio signal from the input digital signal conforming to the HDMI standard, outputs the restored signal to the selection unit 13, and outputs the control signal to the control unit 22. This control signal is assumed to be a control signal conforming to the above-described CEC protocol.

  A control signal from the control unit 22 to the playback device 30 is supplied to the HDMI signal processing unit 21. The HDMI signal processing unit 21 outputs the supplied control signal to the playback device 30 via the HDMI connector 20 and the HDMI cable.

  When the input signal from the input terminal 11 is selected, the control unit 22 controls the signal processing unit 12 and selects the video signal and audio signal output from the signal processing unit 12. The unit 13 is controlled. Further, when the reception of the digital signal conforming to the HDMI standard is selected, the control unit 22 performs the operation setting of the HDMI signal processing unit 21 and the video signal and the audio signal output from the HDMI signal processing unit 21. The selection unit 13 is controlled to select.

The selection unit 13 selectively switches between the video signal and the audio signal output from the signal processing unit 12 and the video signal and the audio signal output from the HDMI signal processing unit 21 according to control from the control unit 22. And the audio signal is supplied to the audio processing unit 14 and the video signal is supplied to the video processing unit 16.
Then, the audio signal processed by the audio processing unit 14 is supplied to the audio output unit 15 such as a speaker or headphones, and the video signal processed by the video processing unit 16 and an OSD (On Screen Display) signal generation unit The OSD signal generated in 17 is supplied to the synthesizing unit 18, and the synthesizing unit 18 superimposes the video signal and the OSD signal and supplies them to the display unit 19 such as a liquid crystal display or an organic EL display. Is done.

The control unit 22 controls most operations of the display device 10 including the various transmission / reception operations described above. The control unit 22 is a microprocessor with a built-in CPU (Central Processing Unit) and the like, receives operation information sent from the remote controller 31 via the receiving unit 23 using the storage unit 24, and operates the operation. Each part is controlled so that the contents are reflected.
The storage unit 24 mainly includes a read-only memory that stores a control program executed by the CPU of the control unit 22, a read / write memory that provides a work area for the CPU, various setting information, control information, and the like. Non-volatile memory to be stored.

  The remote controller 31 mainly includes a power key, a direct channel selection channel key, a quick key, a channel up / down key, a cross key, an enter key, a program guide key, an end key, a return key, and a color key (blue, red, (Green, yellow), volume adjustment key, menu key, etc., direct key to the recorder (recording / playback / fast reverse / fast forward / stop, etc.), connect selection key (recording list, media switching, surround, HDMI device switching) , Device list display, etc.), and when each key is pressed, information related to the pressed key is sent to the receiving unit 23 as operation information.

Next, the initial setting of the language setting will be described using the flowchart of FIG.
When the playback device 30 is connected to the HDMI network of the display device 10 and the playback device 30 is first turned on, the playback device 30 performs initial settings in the following procedure. In the following description, it is assumed that all of the audio language, the subtitle language, and the menu language are initially set, but the initial setting may be made by any combination of one or more of these.

When playing a DVD, the user is inquired whether to use the language setting already set (step S10).
When the user specifies that the language setting already set is used when playing the DVD (step S10 / YES), the display device 10 is inquired by the CEC vendor command whether the language setting has already been made (step S10). S11).
When the notification that the language setting has already been made is received from the display device 10 by the CEC vendor command (step S12 / NO), the initial setting is terminated.

  On the other hand, when a notification that the language setting has not yet been made is received from the display device 10 by a CEC vendor command (step S12 / YES), or when the user is designated not to use the already set language setting (Step S10 / NO), an initial setting screen is displayed (Step S13). On this initial setting screen, selection items of “audio language”, “subtitle language”, and “menu language” used when playing a DVD are displayed, and the screen can be shifted to the setting screen of each selection item.

  When the user sets an audio language, a subtitle language, and a menu language on the setting screen, each language information (language name, whether to use, etc.) set therein is captured (step S14), and is captured here. Each language information is notified to the display device 10 by a CEC vendor command (step S15), and the initial setting is completed.

Here, the processing of the display device 10 at the time of initial setting of the playback device 30 is as follows.
When an inquiry as to whether the language setting has already been performed from the playback device 30 is received by a CEC vendor command, the storage unit 24 is referred to, and it is determined by any playback device 30 whether the language setting is performed. The CEC vendor command returns the completed or undefined information to the reproducing apparatus 30 that has inquired.

  Further, when each language information initialized from the playback device 30 is received, each received language information is stored in the storage unit 24 of the display device 10 so as to be distinguishable from the audio language, the caption language, and the menu language. Among these languages, the default audio language, subtitle language, and menu language set in advance are set for languages that are not designated in the initial settings.

  For example, the storage unit 24 stores “Japanese” in a place where “audio language” is stored, “No display” in a place where “subtitle language” is stored, “Japanese” in a place where “menu language” is stored, The character string is memorized. Alternatively, the character string “English” is stored in the place where “speech language” is stored, “Japanese” is stored in the place where “subtitle language” is stored, and “Japanese” is stored in the place where “menu language” is stored. Thus, not an identification code for identifying a language but a character string such as a language name is stored.

  Next, language setting when a DVD is played back by the playback device 30 will be described using the flowchart of FIG.

  When a DVD is loaded in the playback device 30 and a playback instruction for the content stored on the DVD is input from the user by the remote controller 31 (step S21), the playback device 30 sends the content to the display device 10 by a CEC vendor command. A reproduction request is transmitted (step S22).

When the display device 10 receives a content playback request from the playback device 30 (step S31), the display device 10 switches the input of playback data to the playback device 30 by a CEC command (step S32). Then, an acquisition request for the total language information of the content is transmitted to the playback device 30 by a CEC vendor command (step S33).
Here, the total language information of content refers to all language information for the audio language, subtitle language, and menu language handled by the content recorded on the DVD. For example, if the language handled by the audio language is "English, German, Japanese, Italian" and the subtitle language is "English, German, French, Italian, Japanese", these This is the language information for all audio languages and subtitle languages.

  When receiving the total language information acquisition request from the display device 10 (step S23), the playback device 30 acquires all the language information handled by the DVD from the DVD and returns it to the display device 10 (step S24). .

The display device 10 receives all the language information sent from the playback device 30 (step S34), and converts the language information set in the initial setting into an identification code (step S35).
The sent total language information is temporarily stored in the storage unit 24 so that the voice language, subtitle language, and menu language can be identified. The conversion to the identification code is initially set as a speech language, takes out a character string of language information (language name, whether to use, etc.) stored in the storage unit 24, and this language information is temporarily stored. The number of the language information stored in the voice language is checked, and this number is used as an identification code. Similarly, the subtitle language and menu language are also converted into identification codes. In this conversion, when the same character string does not exist, it is converted into an identification code for default language information.
The display device 10 transmits an identification code corresponding to the converted audio language, subtitle language, and menu language to the playback device 30 using a CEC vendor command.

The playback device 30 receives the identification code corresponding to the audio language, the subtitle language, and the menu language transmitted from the display device 10 (step S25), and stores the identification codes in the storage unit of the playback device 30, respectively. 30 language settings are made (step 26).
Then, video and audio signals are transmitted between the playback device 30 and the display device 10, and playback is executed (steps S27 and S37).

  As described above, in the present embodiment, by automatically reflecting the audio language, subtitle language, and menu language settings, the audio language, subtitle language, and menu language that have been used each time the user changes the playback device are varied. There is no need to make initial settings, and DVD playback can be performed with settings optimal for the user.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, the recording medium to be reproduced is not limited to the DVD described in the present embodiment, and can be similarly applied to any recording medium that requires language setting at the time of reproduction.
The present invention can also be applied to cases where there are many initial setting items and the setting work is very complicated.

  The embodiment of the present invention can also be realized by making each function of the above-described playback device and display device into a computer program, and installing and executing this computer program on the playback device and display device. Further, the computer program can be recorded on a detachable recording medium or downloaded via a network, so that the transfer can be simplified and implemented easily.

1 is an example of a recording / playback system according to an embodiment. It is a block diagram which shows the structure of the video recording / reproducing system which concerns on embodiment. It is a flowchart explaining the initial setting of a language setting. It is a flowchart explaining the language setting at the time of reproducing | regenerating DVD.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Display apparatus, 11 ... Input terminal, 12 ... Signal processing part, 13 ... Selection part, 14 ... Audio | voice processing part, 15 ... Audio | voice output part, 16 ... Video processing part, 17 ... Signal generation part, 18 ... Synthesis | combination part, DESCRIPTION OF SYMBOLS 19 ... Display part, 20 ... HDMI connector, 21 ... HDMI signal processing part, 22 ... Control part, 23 ... Reception part, 24 ... Memory | storage part, 30 ... Playback apparatus, 31 ... Remote controller (remote controller).

Claims (4)

In a recording and playback system in which a plurality of devices having a playback function and a display device that plays back video and audio from the devices are connected via an HDMI cable compliant with the HDMI standard.
The device transmits the language information set in the initial setting to the display device and reproduces it, obtains the language information stored in the display device, sets the language,
The display device stores language information sent from the device, and transmits the stored language information to the device when there is a reproduction request from the device.   2. The recording / reproducing system according to claim 1, wherein the initial setting includes at least one of an audio language setting, a subtitle language setting, and a menu language setting.   3. The recording / reproducing system according to claim 1, wherein the device is configured to perform an initial setting when a language has not yet been set on the display device.   3. The recording / reproducing system according to claim 1, wherein the device is configured to perform an initial setting upon receiving a language setting instruction from a user.

Images