JP4375358B2 - Disc player - Google Patents

Description

  The present invention relates to an apparatus for reproducing a disc on which audio signals are recorded in a plurality of formats.

  On the DVD, audio signals having the same content can be recorded in a plurality of different formats, for example, audio signals of Dolby Digital (trademark), dts (trademark), linear PCM, MPEG (trademark) and the like. 2. Description of the Related Art Conventionally, a disc reproducing apparatus that allows a user to select a desired one of these formats and switch and reproduce it has been put into practical use. The number and type of formats to be recorded can be freely determined by a disc manufacturer to some extent, and often differs depending on the disc or title. Therefore, the user may have to perform an operation of selecting a format for each title. In view of this, there has been disclosed a disk reproducing apparatus that facilitates such troublesome operations (Patent Documents 1, 2, etc.).

  FIG. 7 of the document of Patent Document 1 shows an example of a screen that warns the user of the number of audio channels that can be currently used during playback of a disc. “This disc contains 5 channels of audio. "Is displayed.

  In Patent Document 2, as shown in Paragraph 11 and FIG. 4, a setting screen for selecting a priority order in advance for the audio signal format that the listener desires to reproduce is prepared, and the data set thereby is stored in the nonvolatile memory. Thus, there is described a configuration for switching to the set audio signal format during reproduction. Further, in claim 2 of this document, there is a description that, when reproduced according to the format registered on the setting screen, the format is guided by audio or video.

Further, there may be a case where a plurality of languages and audio signals having the same content are recorded in a plurality of formats on one DVD. Conventionally, in a configuration that has been put to practical use, when the language is set in advance, this language setting has priority over the audio signal format, and the disc playback that outputs the audio signal determined in this language setting There was a device.
JP-A-8-287613 2006-19903 gazette

  However, the channel of the audio signal handled by the configuration described in FIG. 7 of Patent Document 1 is mainly related to the setting of the language of the audio signal, and is not the format of the audio signal. Therefore, even if there is an audio signal with higher sound quality, if the language is the same, the information that the format of the audio signal is recorded on the DVD is not announced, so a user having an audio system that supports high sound quality Therefore, it is necessary for the user to check the sound signal with high sound quality for each title. Further, in the configuration of Patent Document 2, there is a problem that the user may not always desire to switch to an audio signal having a format that the listener desires to reproduce.

  Further, Patent Documents 1 and 2 do not clearly describe a method for facilitating setting of an audio signal when selecting one of a plurality of languages. Also, in a disc player that has been put to practical use, when a language is set in advance, this language setting has priority over the audio signal format, and the audio signal determined in the language setting is output. Therefore, the audio signal of the desired format may not be output.

  In view of such a problem, when the same audio signal is encoded and recorded in a plurality of formats on one DVD, the present invention sets the audio signal format desired by the user of the desired audio signal. An object of the present invention is to provide a disc playback apparatus that can be viewed without being overlooked.

  In the present invention, means for solving the above-described problems are configured as follows.

The present invention
In a disc playback apparatus provided with detection means for reading data of a title currently being reproduced from a disc on which audio signals encoded in a plurality of formats are recorded , and detecting the format of the audio signal present in the title ,
Language setting means for receiving in advance a language setting for outputting the audio signal;
Format setting means for receiving in advance a setting of a format for outputting the audio signal;
Among the formats detected by the detecting means, a format corresponding to the language set by the language setting means, the format set by the format setting means, and other than the format of the currently reproduced audio signal A notification means for outputting to the display that the format is detected when the condition that the format is included is satisfied ,
Operating means for accepting a format change operation in a state where the notification means outputs to the display that the format has been detected .

In this configuration, the notification means is a format corresponding to the language set by the language setting means among the formats detected by the detection means, is the format set by the format setting means , and is currently reproduced. When the condition that a format other than the audio signal format is included is satisfied, the fact that the format has been detected is output to the display. Thus, the desired language is set in the language setting means, and said format set format with setting means, and contains formats other than the format of the audio signal currently being reproduced lever, the user can be any During the reproduction of the title, it is possible to view the audio signal without overlooking the audio signal in the predetermined format related to the predetermined language set by these setting means.

  According to the present invention, the user can view the audio signal without overlooking the format desired by the user.

  The disc playback apparatus of the first embodiment will be described with reference to FIG. This disk reproducing apparatus is an apparatus for reading and reproducing data recorded on the DVD 100. FIG. 1 shows a part of the configuration of this disk reproducing apparatus (shown by 1 in the figure). The disc playback apparatus 1 includes a reading unit 2, a playback circuit 3, an operation unit 4, and a control unit 5.

  The mounted DVD 100 stores audio signals encoded in a plurality of formats. Assume that the plurality of audio signals are recorded in a plurality of formats, for example, any two or more of Dolby Digital (trademark), dts (trademark), linear PCM, and MPEG (trademark). Although the mounted DVD 100 stores an audio signal encoded in one format, the disc playback apparatus 1 of this embodiment can be applied, but in FIGS. 3, 5, 7, and 9 below, No indication is shown.

The reading unit 2 includes a pickup head including a laser diode, a pickup lens, a light receiving element, and the like, a spindle motor, a thread motor, a servo mechanism, and the like. By these motors and servo mechanism, tracking servo is applied to an arbitrary position of the mounted DVD 100, and the laser light of the laser diode is irradiated on the disk surface and the reflected light is read by the light receiving element.
The reproduction circuit 3 includes an amplifier that amplifies the RF signal read by the light receiving element and a decoder that decodes the amplified RF signal. The decoder extracts a video signal and an audio signal from the RF signal. The reproduction circuit 3 synthesizes the video signal output from the OSD 51 and outputs it to the display unit 101 and also outputs an audio signal to the amplifier & speaker 102. The reproduction circuit 3 reads an audio signal of one format received from the control unit 5 among the audio signals of a plurality of formats recorded on the DVD 100.

  The operation unit 4 includes controls provided on the main body of the disc playback apparatus 1 or a remote controller, for example, up / down, left / right keys, and an enter key. When these controls are pressed down, various states of the disc playback apparatus 1 are determined. A control code for control by the control unit 5 is input. For example, the user can move the screen display highlight up and down and left and right while confirming the screen display of the OSD 51 of the control unit 5 described later. Further, when the determination key is pressed down for the setting displayed in the highlight, this setting is performed by the control unit 5.

  The control unit 5 includes a CPU, a ROM for storing control data and a control program, and a RAM, and controls the entire disc playback apparatus 1 including the reading unit 2, the playback circuit 3, and the like. In addition, the control unit 5 includes an OSD 51 (On Screen Desply) and a format detection unit 52 that control screen display superimposed on the video signal. The control unit 5 determines the format for outputting the audio signal based on the setting previously set by the user using the OSD 51, and instructs the reproduction circuit 3.

  The OSD 51 causes the CPU to execute the OSD program stored in the ROM in the control unit 5, thereby outputting a video signal to be superimposed on the video output generated by the playback circuit 3 to the playback circuit 3. The video signal output from the OSD 51 is combined with the video signal of the content of the DVD 100 by the playback circuit 3 and output to the DVD 100.

  The OSD 51 outputs a video signal to be displayed on the screen of the display unit 101 so as to be superimposed on the video reproduced by the reproduction circuit 3. Further, the OSD 51 has an initial setting function for initial setting of the function of the disc playback apparatus 1. In this initial setting, when an instruction of the left / right and up / down keys of the operation unit 4 is received, the highlight unit is moved. The video signal for displaying another setting screen is output to assist the user in initial setting. The disc playback apparatus of the apparatus according to the present embodiment performs language setting 511 and format setting 512 as initial settings of the functions of the disc playback apparatus 1. In the language setting 511, the setting of an audio signal in a predetermined language is accepted. Here, the DVD 100 may be recorded in a plurality of languages as well as a plurality of formats, and the language setting 511 accepts this language setting. In the format setting 512, the setting of the format of the audio signal recorded on the DVD 100 is accepted.

  The format detection unit 52 detects the format and language of the audio signal from the audio signal reproduced by the reproduction circuit 3. Here, the fact that the audio signals of a plurality of formats are recorded on the DVD 100 cannot be determined simply by reading the lead-in area by the disc reproducing apparatus, and it cannot be understood unless the audio signal of the title is actually reproduced. Therefore, the format detection unit 52 can detect the format and language of the audio signal only when the playback circuit 3 reads the audio signal of an arbitrary title on the DVD 100.

  A display device 101 outside the disc playback apparatus 1 displays the video output of the playback circuit 3 on a screen. The amplifier & speaker 102 amplifies the audio signal output from the reproduction circuit 3 by an amplifier, outputs the amplified signal to the speaker, and emits the sound from the speaker.

Next, the flow of processing in which the control unit 5 reproduces the DVD 100 will be described using the flowchart of FIG. 2 and the screen display example of FIG. In this process, if the audio signal is recorded in a plurality of formats, the user is notified of that fact. For example, if a higher sound quality format is recorded in this title, the user can be notified.
<ST1> The control unit 5 instructs the playback circuit 3 to start playback of the content of the title specified by the operation unit 4.
<ST2> The format detection unit 52 detects the format of the audio signal of the title being reproduced from the audio signal reproduced by the reading unit 2, and the control unit 5 has a plurality of formats detected by the format detection unit 52. Judge whether or not. If it is recorded in a plurality of formats, the process proceeds to ST3. If it is not recorded in a plurality of formats, the flow ends.
<ST3> The OSD 51 outputs a video signal for displaying on the display device 101 that “this content contains audio recorded in a plurality of formats.” For example, as shown in FIG. 3, this is displayed on a part of an image 1011 of the display device 101.

It should be noted that on the screen displayed in ST3, the OSD 51 prompts the format to be changed, for example, outputs a video signal indicating “Do you want to change the format? Yes / no” along with the screen 1011 to change the format. An operation may be accepted.
Further, the disc playback apparatus according to the first embodiment does not necessarily require the initial setting function of OSD 51 (function for setting language setting 511 and format setting 512).

  Next, a disc playback apparatus according to a second embodiment related to the application of the first embodiment will be described. The configuration of the disc reproducing apparatus according to the second embodiment is the same as that shown in FIG. 1, and the above description applies mutatis mutandis. The disc playback apparatus of the second embodiment is different from the disc playback apparatus of the first embodiment in the screen display control method.

  With reference to the flowchart of FIG. 4 and the screen display example of FIG. 5, the flow of processing in which the control unit 5 plays the DVD 100 in the apparatus of the second embodiment will be described. In this flow, when the format set by the user with the OSD 51 is recorded in the title instructed to be reproduced, the fact that the format is recorded is notified. Thereby, the user can know that the desired format exists.

<ST11> The control unit 5 instructs the playback circuit 3 to start playback of the content of the title specified by the operation unit 4.
<ST12> The control unit 5 refers to the format setting 512 initially set by the user using the OSD 51, and acquires the information. Hereinafter, the format set in the format setting 512 will be described as format A.

  <ST13> The format detection unit 52 detects the format of the audio signal of the title being reproduced from the audio signal reproduced by the reading unit 2, and the control unit 5 has a plurality of formats detected by the format detection unit 52. Judge whether.

If it is recorded in a plurality of formats, the process proceeds to ST14. If it is not recorded in a plurality of formats, the flow ends.

  <ST14> The control unit 5 determines whether there is the format A referred to in ST12 among the formats detected by the format detection unit 52. If there is the format A, the process proceeds to ST15. Proceeds to ST16.

  <ST15> The OSD 51 outputs a display indicating that the format set by the OSD 51 exists to the display unit 101. For example, as shown in FIG. 5, the video signal reproduced by the reproduction circuit 3 is superimposed on a part of the screen 1012 of the display unit 101, and “This content includes audio recorded in the format A. "Is displayed and the user is notified. After this ST15, the flow ends.

  <ST16> The OSD 51 outputs a video signal for displaying on the display device 101 that “this content contains audio recorded in a plurality of formats”. For example, as in FIG. 3 showing the screen display example of the first embodiment, this is displayed on a part of the image of the display unit 101. After this ST16, the flow ends.

In addition, on the screen displayed in ST15 or ST16, the OSD 51 prompts the format to be changed, for example, outputs a video signal indicating “Do you want to change the format? Yes / no” along with the screen 1011 to You may accept the operation which changes.
Further, in the process of ST15, when the format of the audio signal of the title currently being reproduced is format A, there is no need to switch the audio signal format and there is no need to bother informing, so a determination step is provided. The flow may be terminated immediately.

  In the disc playback apparatus of the second embodiment, the OSD 51 is indispensable, but the setting item of the language setting 511 is not necessarily provided.

  Next, a disc playback apparatus according to a third embodiment related to the application of the first and second embodiments will be described. The configuration of the disc reproducing apparatus according to the second embodiment is the same as that shown in FIG. 1, and the above description applies mutatis mutandis. The disc playback apparatus of the third embodiment is different from the disc playback apparatus of the above embodiment in the screen display control method.

  With reference to the flowchart in FIG. 6 and the screen display example in FIG. 7, the flow of processing in which the control unit 5 plays the DVD 100 in the apparatus of the third embodiment will be described. In this flow, when there are a plurality of audio signal formats corresponding to the language set by the user in the OSD 51, the fact that there are a plurality of formats is notified.

<ST21> The control unit 5 instructs the playback circuit 3 to start playback of the content of the title specified by the operation unit 4.
<ST22> The control unit 5 refers to the language setting 511 initially set by the user using the OSD 51, and acquires the information. Hereinafter, the language set in the language setting 511 is described as language X.

<ST23> The format detection unit 52 detects the format of the audio signal of the title being reproduced from the audio signal reproduced by the reading unit 2, and the control unit 5 includes the format detected by the format detection unit 52. It is determined whether a plurality of formats corresponding to language X are included. If the DVD 100 is recorded in a plurality of formats corresponding to the language X, the process proceeds to ST24, and if not recorded in a plurality of formats, the flow ends.

<ST24> The OSD 51 outputs a display to the display 101 indicating that the format set by the OSD 51 exists. For example, as in FIG. 5 showing the screen display example of the second embodiment, “a part of the screen of the display 101 displays“ This content contains audio recorded in a plurality of formats corresponding to the set language X ”. Is displayed, and the user is notified. After this ST24, the flow ends.

  In the disc playback apparatus of the third embodiment, the OSD 51 is indispensable, but the setting items of the format setting 512 are not necessarily provided.

  Next, a disc playback apparatus according to a fourth embodiment according to an application of the first to third embodiments will be described. The configuration of the disc player according to the fourth embodiment is the same as that shown in FIG. 1, and the above description applies mutatis mutandis. The disc playback apparatus of the fourth embodiment is different from the disc playback apparatus of the above embodiment in the screen display control method.

  With reference to the flowchart of FIG. 8 and the screen display example of FIG. 9, the flow of processing in which the control unit 5 plays the DVD 100 in the apparatus of the second embodiment will be described. In this flow, if there is a format set by the user in the OSD 51, the fact that the format is present is notified.

<ST31> The control unit 5 instructs the playback circuit 3 to start playback of the content of the title specified by the operation unit 4.
<ST32> The control unit 5 refers to the format setting 512 initially set by the user using the OSD 51, and acquires the information. Hereinafter, the format set in the format setting 512 will be described as format A.

  <ST33> The control unit 5 refers to the language setting 511 initially set by the user using the OSD 51, and acquires the information. Hereinafter, the language set in the language setting 511 is described as language X.

  <ST34> The format detection unit 52 detects the format of the reproduced audio signal of the title from the audio signal reproduced by the reading unit 2, and the control unit 5 includes the language X in the format detected by the format detection unit 52. It is determined whether a plurality of formats corresponding to is included. If it is recorded in a plurality of formats, the process proceeds to ST35, and if it is not recorded in a plurality of formats, the flow ends.

  <ST35> The control unit 5 determines whether or not the format A is present in the plurality of formats corresponding to the language X determined in ST34. If there is the format A, the process proceeds to ST36. The process proceeds to ST37.

  <ST36> The OSD 51 outputs a display indicating that the format set by the OSD 51 exists to the display unit 101. For example, as shown in FIG. 5, the video signal reproduced by the reproduction circuit 3 is superimposed on a part of the screen 1012 of the display device 101, and “This content is recorded in the format A corresponding to the set language X. Is displayed ”to notify the user. After this ST36, the flow ends.

  <ST37> The OSD 51 displays “This content includes audio recorded in a plurality of formats corresponding to the set language X” on the display device 101. For example, as in FIG. 7 of the third embodiment, this is displayed on a part of the image of the display device 101. After this ST37, the flow ends.

In addition, on the screen displayed in ST36 or ST37, the OSD 51 prompts the format to be changed, for example, outputs a video signal indicating “Do you want to change the format? Yes / no” along with the screen 1014, and outputs the format. You may accept the operation which changes.
Also, in the process of ST36, when the audio signal format of the currently reproduced title is the format A corresponding to the language X, there is no need to switch the audio signal format, and there is no need to bother notification. A determination step may be provided to end the flow immediately.
In the disc playback apparatus of the fourth embodiment, the setting items of language setting 511 and format setting 512 of OSD 51 are indispensable.

  In the above embodiment, the target to be played back by the disc playback apparatus 1 is the DVD 100. However, when audio signals having the same content are recorded in a plurality of formats on one recording medium, the apparatus of these embodiments is used. Can be applied.

  In the above embodiment, the format detection unit 52 cannot detect that a plurality of audio signal formats are recorded unless an arbitrary title is actually reproduced. As an application form of this configuration, a configuration is possible in which playback is started again from the beginning without being output to the display unit 101 and the amplifier & speaker 102 until the format detection unit 52 detects the format. Further, as another form of these configurations, the format detection unit 52 detects the format without recording the information indicating that a plurality of audio signal formats are recorded in the lead-in area and reading out the audio signal. Configuration is also possible.

A diagram showing a part of the configuration of the disc player FIG. 3 is a flowchart of processing for playing back a DVD by the control unit of the disc playback apparatus according to the first embodiment; Example of a screen displayed by the OSD during playback by the disk playback device of the first embodiment Flow chart of processing in which the control unit of the disc playback apparatus of the second embodiment plays a DVD Example of a screen displayed by the OSD during playback by the disk playback device of the second embodiment Flowchart of processing in which the control unit of the disc playback apparatus of the third embodiment plays back a DVD Example of a screen displayed by the OSD during playback by the disk playback device of the third embodiment Flowchart of processing in which the control unit of the disc playback apparatus of the fourth embodiment plays back a DVD Example of a screen displayed by the OSD during playback by the disc playback apparatus of the fourth embodiment

Explanation of symbols

1-disc player, 2-reading unit, 3-reproducing circuit, 4-operation unit 5-control unit, 51-OSD, 511-language setting, 512-format setting 52-format detecting unit 100-DVD, 101-display , 102-Amplifier & Speaker

Claims (1)

In a disc playback apparatus provided with detection means for reading data of a title currently being reproduced from a disc on which audio signals encoded in a plurality of formats are recorded , and detecting the format of the audio signal present in the title ,
Language setting means for receiving in advance a language setting for outputting the audio signal;
Format setting means for receiving in advance a setting of a format for outputting the audio signal;
Among the formats detected by the detecting means, a format corresponding to the language set by the language setting means, the format set by the format setting means, and other than the format of the currently reproduced audio signal A notification means for outputting to the display that the format is detected when the condition that the format is included is satisfied,
A disc reproducing apparatus comprising: an operating unit that receives a format change operation in a state in which the notification unit outputs the fact that the format has been detected to the display unit.

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