JP2005166182A - Optical disk player - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk player in which music selection operation is performed efficiently for an SACD. <P>SOLUTION: When an inserted optical disk 1 is an SACD, being the SACD is recognized by a SACD recognizing means 111, and a master text of disk information is obtained by a master text obtaining means 112. After that, when it is determined by a track text existence determining means 113 that a track text of the disk information exists, the track text is obtained by a track text obtaining means 114. When menu picture display request is generated, in the case it is determined by the track text existence determining means 113 that the track text exists, a display processing means 116 makes a display part 13 display album information and artist information using the master text, and display music information using the track text. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention is a hybrid SACD (super audio
The present invention relates to an optical disc reproducing apparatus capable of reproducing even a compact disc.

In recent years, DVD (Digital Versatile Disc), a new optical disk with a larger capacity than CD
Has become widespread. In this DVD, for example, information is recorded on an optical disk having a diameter of 12 cm at 0.8 μm which is half of the track pitch 1.6 μm of a conventional CD, and the wavelength of the semiconductor laser is set to CD
EFM (Eight to Fourteen) adopted in CD, changed from 780nm to 630nm
Modulation) Modulation method has been improved to achieve high density recording equivalent to about 4 Gbytes on one side. In addition, the SACD that has recently become widespread has two recording layers (a two-layer type of a DVD layer and a CD layer and a two-layer type of a DVD layer and a DVD layer).

For example, when the SACD is a two-layer optical disc of a DVD layer and a CD layer,
For example, a 16-bit digital audio signal sampled at 44.1 KHz is recorded on the CD layer as one layer, and a sigma Δ-modulated 1-bit digital audio signal at 2.842 MHz is recorded on the HD layer as the other layer. Is recorded. The HD layer is divided into a 2-channel area and a multi-channel area.
JP-A-9-17101 JP 2001-31880 A JP 2002-152665 A

When playing back music recorded on such an SACD with a conventional optical disk playback device, the user selects music by pressing, for example, the skip key of the remote control or the operation unit of the device body several times, and then plays the music. The key is pressed.

However, if the user knows in advance the music title corresponding to the number of times the skip key is pressed, the user can know how many times the skip key is pressed to play the music he wants to listen to. If you don't know, you have to check the number of the SACD recorded music you want to listen to by looking at the song menu table attached at the time of purchasing the SACD. It was bothersome and inconvenient.

Note that the conventional techniques of Patent Documents 1, 2, and 3 do not disclose the music selection operation in the optical disk playback apparatus that can also play back SACD, and thus cannot solve the above-described problems.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc reproducing apparatus capable of efficiently performing a music selection operation on the SACD.

In order to achieve the above object, the invention of claim 1 is an optical disc reproducing apparatus capable of reproducing even a hybrid type SACD composed of double layers, when the inserted optical disc is an SACD. SACD recognition means for recognizing that it is an SACD;
When it is determined that the track text exists, master text acquisition means for acquiring the master text of the disc information after being recognized as the SACD, track text presence / absence determination means for determining the presence / absence of the track text of the disc information A text acquisition control unit having a track text acquisition unit for acquiring the track text, and when the track text presence determination unit determines that the track text is present when the menu screen display request is generated, And a system controller including a display control unit having display processing means for displaying album information and artist information, displaying song information using the track text, and highlighting the selected song name. Characteristic To provide an optical disc reproducing apparatus for.

In this configuration, when the inserted optical disc is an SACD, the SACD recognition unit recognizes that the optical disc is an SACD, and the master text of the disc information is acquired by the master text acquisition unit. Thereafter, the presence / absence of the track text in the disc information is determined by the track text presence / absence determining means, and when it is determined that the track text exists, the track text is acquired by the track text acquiring means.

When the menu text display request is generated and the track text presence / absence determining means determines that there is track text, the display processing means displays the album information and artist information using the master text, and the track text The music information is displayed using text, and the selected music title is highlighted. As a result, album information and artist information are displayed on the display section, music information is displayed, and the selected music title is highlighted.

According to this configuration, when the music recorded on the SACD is played back, the display unit displays the album information and the artist information, the song information, and the selected song name is highlighted. Therefore, the music can be selected while looking at the music title, and the music selection operation can be efficiently performed on the SACD, which improves usability.

The invention of claim 2 is an optical disc reproducing apparatus capable of reproducing even a hybrid type SACD composed of double layers, wherein the inserted optical disc is an SACD,
There is provided an optical disc reproducing apparatus comprising a system controller for displaying music information using the track text when the disc information includes track text.

In this configuration, when the inserted optical disc is an SACD and the track information includes track text, the song information is displayed using the track text.

According to this configuration, when the music recorded on the SACD is played back, the music information is displayed on the display unit, so that the music can be selected while looking at the name of the music and the music selection operation can be efficiently performed on the SACD. This improves usability.

In the invention of claim 3, in the invention of claim 2, the system controller recognizes that the optical disk is SACD when the inserted optical disk is SACD, and after recognizing the SACD. Since there is provided a text acquisition control unit having track text presence / absence determination means for determining the presence or absence of track text in the disc information and track text acquisition means for acquiring the track text when it is determined that the track text is present, the track Music information can be displayed using text.

According to a fourth aspect of the present invention, in the third aspect of the invention, the system controller uses the track text when the menu screen display request is generated and the track text presence / absence determining means determines that the track text is present. Since the display control unit having the display processing means for displaying the information and highlighting the selected song name is provided, the song information can be displayed, and the music selection operation is facilitated.

In the invention of claim 5, in the invention of claim 3, since the system controller includes a text acquisition control unit having master text acquisition means for acquiring the master text of the disc information after being recognized as SACD, It becomes possible to display album information and artist information using the master text.

In the invention of claim 6, in the invention of claim 4, since the system controller includes a display control unit having a display processing means for displaying album information and artist information using the master text, the album information and artist information Can be displayed, and the name of the album containing the selected song and the name of the artist can be known at a glance.

As described above, according to the present invention, in an optical disc reproducing apparatus capable of reproducing even a hybrid type SACD composed of double layers, the inserted optical disc is SAC.
SACD recognition means for recognizing that it is an SACD when it is D, master text acquisition means for obtaining the master text of the disc information after being recognized as the SACD, and determining whether or not there is a track text of the disc information A track text presence / absence judging means, and a track text obtaining means for obtaining the track text when it is judged that the track text is present, and the track text when a menu screen display request is generated. Display that displays album information and artist information using the master text and also displays song information using the track text and highlights the selected song name when the presence / absence determining means determines that there is track text Processing means Since the system controller including the display control unit is provided, when the music recorded on the SACD is played, the display unit displays the album information and the artist information, and the song information. The selected song name is highlighted, so that the user can select a song while looking at the song name, and can efficiently perform a song selection operation on the SACD, improving usability.

Further, according to the present invention, in an optical disk reproducing apparatus capable of reproducing even a hybrid type SACD composed of double layers, when the inserted optical disk is an SACD and the track information is included in the disk information. Since the system controller for displaying the song information using the track text is provided, when the music recorded on the SACD is played, the song information is displayed on the display unit, thereby selecting the song while watching the song name. S
The music selection operation can be efficiently performed on the ACD, and the usability is improved.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of an optical disc reproducing apparatus according to an embodiment of the present invention.

This optical disk reproducing apparatus includes an optical pickup 3, an RF amplifier 4, an error correction / decoder circuit 7, a memory controller 8, a buffer memory 9, a D / A conversion circuit 10, a system controller 11, a servo circuit 5, a drive circuit 6, and a spindle motor. 2, an operation unit 12 and a display unit 13 are provided.

The optical pickup 3 includes an objective lens (not shown), a biaxial mechanism, a semiconductor laser, and a light receiving unit that receives reflected light by reflecting light emitted from the semiconductor laser on the surface of the optical disk 1. When the optical disk 1 mounted on a turntable (not shown) of the optical disk reproducing apparatus is a SACD having a hybrid configuration, the optical pickup 3 uses a semiconductor laser that emits a wavelength of 780 nm, for example, when reproducing the area of the CD layer. And HD
When reproducing the layer, the optical path is switched so that a semiconductor laser having a short wavelength of 680 nm is used.

The optical pickup 3 includes two objective lenses (not shown). When reproducing the area of the CD layer, a lens having an aperture ratio of 0.45 is used. When reproducing the area of the HD layer, the aperture ratio is used. The optical path is switched so that a 0.6 lens is used. When the optical disc 1 loaded in the optical disc playback apparatus is a CD, the SACD that is a hybrid type optical disc
This is the same as when the CD layer area is reproduced.

If a hologram-integrated aspherical lens is used, it is not necessary to provide two objective lenses inside the optical pickup 3 as described above, and it can be configured by only switching the optical path of the semiconductor laser with one lens. An optical pickup having a configuration may be used.

The two-axis mechanism of the optical pickup 3 includes a focusing coil (not shown) for driving the objective lens in a direction toward and away from the optical disc 1 and a tracking coil (not shown) for driving the objective lens in the radial direction of the optical disc 1. (Not shown). In addition, the optical disk reproducing apparatus is provided with a thread motor (not shown) that moves the entire optical pickup 3 largely in the radial direction of the optical disk 1.

The reflected light detected by the light receiving unit in the optical pickup 3 is supplied to the RF amplifier 4, and this RF
A focus error signal and a tracking error signal are generated by the current / voltage conversion and matrix calculation processing in the amplifier 4, and an RF signal as reproduction information is generated.

The generated focus error signal and tracking error signal are supplied to the servo circuit 5
Then, after phase compensation and gain adjustment at, the voltage is applied to the focusing coil and tracking coil via the drive circuit 6. Further, the tracking error signal generates a thread error signal through a low-pass filter in the servo circuit 5, and this thread error signal is applied to a thread motor (not shown) through the drive circuit 6.

Further, the RF signal generated by the RF amplifier 4 is binarized and EFM demodulated by the error correction / decoder circuit 7 when the mounted optical disk 1 is a CD, and CI
An error correction process is performed by RC (Cross Interleave Read solomon Coding) and then input to the memory controller 8.

On the other hand, when the optical disc 1 placed on the turntable is an SACD that is a hybrid type optical disc, when reproducing the area of the CD layer, the error correction / decoder circuit 7 uses 2 as in the case of the CD. Digitization, EFM demodulation, and CIRC error correction processing are performed and supplied to the memory controller 8.

When reproducing the area of the HD layer of the SACD which is a hybrid type optical disc, the error correction / decoder circuit 7 binarizes and performs EFM-Plus demodulation and performs error correction processing based on the product code. It will be.

Further, the error correction / decoder circuit 7 generates the speed error signal and the phase error signal by comparing the binarized EFM signal or the EFM plus signal with the reference clock, and supplies the speed error signal and the phase error signal to the drive circuit 6 so that the optical disk 1 is spindle-driven. The rotation is controlled by the motor 2. Further, the error correction / decoder circuit 7 controls a PLL (Phase Locked Loop) pull-in operation based on the binarized EFM signal or EFM plus signal.

The binarized data after error correction is written into the buffer memory 9 through the memory controller 8 at a predetermined transfer rate. When a predetermined amount or more of data is accumulated in the buffer memory 9, reading is performed from the buffer memory 9 at a second transfer rate that is sufficiently slower than the write transfer rate. As described above, since data is once stored in the buffer memory 9 and then output as audio data, even if, for example, a track jump occurs due to disturbance such as vibration, continuous data reading from the optical pickup 3 is interrupted. Since data corresponding to the time required for relocation to the address where the track jump of the optical pickup 3 occurs is stored in the buffer memory 9 in advance, continuous audio data output can be realized as audio output.

The memory controller 8 is controlled by the system controller 11.
The digital data read from the buffer memory 9 by the memory controller 8 is D
The analog audio signal is converted by the / A converter 10 and output as a right channel audio output and a left channel audio output.

The system controller 11 transfers various servo commands to the servo circuit 5 according to the operation of the various operation keys of the operation unit 12, gives a control command for the buffer memory 9 to the memory controller 8, Control is performed so that character information such as time and the title of the program being played back, album information, artist information, song information, etc. are displayed on the display unit 13, spindle servo control in the error correction / decoder circuit 7, etc. Decoder control is performed.

The system controller 11 according to the present embodiment includes a front end 110. The front end 110 is an SACD recognition unit 111 that recognizes an SACD when the inserted optical disk is an SACD, and the SACD. Master text acquisition means 112 for acquiring the master text of the disc information after being recognized, track text presence / absence determination means 113 for determining the presence or absence of the track text of the disc information, and the track text when it is determined that the track text exists A text acquisition control unit 115 having a track text acquisition unit 114 for acquiring.

Further, the system controller 11 displays album information and artist information using the master text when the track text presence / absence determining means 113 determines that there is a track text when a menu screen display request is generated. The display control unit 117 includes display processing means 116 for displaying song information using the track text and highlighting the selected song name.

FIG. 2 shows the structure of the disc area 20 in the SACD. The disk area 20 includes a file system area 21, a DTCP (disc manufacturer information) area 22,
A master TOC (Table Of Contents) area 23, a 2-channel area 24, a multi-channel area 25, an extra data area 26, and the like are included. In the master TOC area 23, information on the entire disc, for example, a 2-channel start address, a multi-channel start address, and other information are written. Master TOC
From the start address of the two channels obtained from the master TOC in the area 23, it jumps to the audio area 30 (see FIG. 3). For example, the TOC-1 area 31, the track area 32, the TOC-2 area 33, and the like are in the 544th sector.

FIG. 3 is a diagram showing the structure of the audio area in, for example, the 2-channel area 24 in FIG. As described above, the audio area 30 is, for example, a TOC from the 544th sector.
-1 area 31, track area 32, and TOC-2 area 33.

FIG. 4 is a diagram showing the structure of the TOC area in, for example, the TOC-1 area 31 in FIG.
The TOC area 40 includes an area 41 of TOC_0, an area 42 of Track_List_1, an area 43 of Track_List_2, ISRC_and_Genre_Lis.
t area 44, access list area 45, track text area 46, index list area 47, track web link list area 48, and the like.

In the area 42 of Track_List_1, the start address and the length of data in the track are written. In the area 43 of Track_List_2, the start time of each track corresponding to the start address and the playback time of each track are written.
In the area 44 of ISRC_and_Genre_List, the country code of the disc, the recording date of the disc, the genre of the disc, and the like are written. Access list area 4
In 5, a table for converting time information into address information is written. In the track text area 46, a track name and the like are written. In an area 47 of the index list 47, an index name and the like are written. In the track web link list area 48, a list of information that can be acquired for the track on the Internet is written.

FIG. 5 is a diagram showing the structure of the master TOC area 23 in FIG. This master TOC
The area 23 includes an area 51 of the master TOC1, an area 52 of the master TOC2, and an area 53 of the master TOC 53. An audio area 30 is provided after the master TOC area 23.

FIG. 6 is a diagram showing the structure of each master TOC in FIG. The master TOC area 60 includes a master TOC_0 area 61, a master text [1] area 62, a master text [2] area 63,..., A master text [8] area 64, and Ma.
It is composed of an nuf_Info area 65 and the like.

The master TOC_0 in the area 61 indicates the header of the master TOC. The master text [1] in the area 62 includes album information and artist information of the music edited first. The master text [2] in the area 63 includes album information and artist information of the music edited second. Further, the master text [8] in the area 64 includes album information and artist information of the music edited eighth. Manuf_Info in area 65 indicates disc-specific information related to disc manufacture.

FIG. 7 is a diagram showing the structure of the track text in this embodiment. In FIG.
The track_Text_Signature is the track text (Track_Text
) Is an 8-byte character string for identifying the sector. N_Text. _Channels is
The number of channels corresponding to the language of the text is indicated, and N_Tracks indicates the number of tracks on which the text exists. N_Text. The value of _Channels and N_Tracks is A
Encoded in text_Channels of rea_Data. Track_Te
If xt is present, it must contain at least one Text_Item.

Track_Text_Item_Ptr [c] [tno] indicates an address where a track name corresponding to the language is written. Track_Text_Item_Ptr [c] [
tno] includes the byte difference from the first byte of Track_Text to N_Item [c] [tno]. Text_Item is the text channel c and Trac
Track_Text_Item_P if not available for k [tno] combination
tr [c] [tno] is set to zero. At a minimum, if one Text_Item is available, the first non-zero Track_Text_Item in Track_Text
_Ptr has the value 4096, for example.

When jumping to the address written in Track_Text_Item_Ptr [c] [tno], the jump destination becomes N_Item [c] [tno]. N_Items [c] [tn
o] contains the number of available text items for Track [tno] in text channel c. The minimum value allowed for N_Items is 1, and the maximum value allowed is 10. Text_Item [c] [tno] [item] includes a text item for Track [tno] in the text channel c, and a track name (music information etc.) is written.

FIG. 8 is a diagram showing an example of a SACD menu screen displayed based on the contents of TOC_Text in FIG. As shown in FIG. 8, on the menu screen, for example, “When I look in your eyes” is the album name, “Diana Kall” is the artist name, and “Let's Face the Music” is the song name.
and Dance ”,“ Devil May Care ”, and the like are displayed. In this display example, “Let's Face the Music and Dance” is selected, and this portion is highlighted.

FIG. 9 is a flowchart for explaining the track text acquisition process in this embodiment. The track text acquisition process will be described with reference to this flowchart and FIG.

For example, a storage area of 6553 bytes for holding track text information and a storage area of 16384 bytes for holding master text information are reserved in the memory 9 in advance. When the optical disc 1 inserted into the optical disc playback apparatus is an SACD, the SACD recognition unit 111 recognizes that the optical disc 1 is an SACD (step S1), and the master text of the disc information is acquired by the master text acquisition unit 112 ( Step S2).

Thereafter, whether or not the track text of the disc information is in the audio area is determined by the track text presence / absence determining means 113 (step S3). If it is determined that the track text is present, the track text is acquired by the track text acquiring means 114. This process ends (step S5). If it is determined that there is no track text (step S3), the process ends (step S5).

FIG. 10 is a flowchart for explaining the song information display processing in this embodiment.
The song information display process will be described with reference to this flowchart and FIG.

A user operates the operation unit 12 of the optical disc playback apparatus to generate a menu screen display request,
When the SACD menu screen display process is started (step S11), the track text presence / absence determining unit 113 determines whether or not there is track text in the disc information (step S12).

When the track text presence / absence determination unit 113 determines that there is track text, the display processing unit 116 causes the display unit 13 to display album information and artist information using the master text acquired in step S2 of FIG. Together with step S4 in FIG.
The song information is displayed using the track text acquired in step S13.

For example, as shown in the SACD menu screen of FIG. 8, the album name (album information), artist name (artist information), and song name (song information) are displayed, and the user presses the music selection key on the operation unit 12 to display “ Let's Face the Music and Danc
When “e” is selected, this portion is highlighted. When the user presses the play key of the operation unit 12, the highlighted “Let's Face the Mu” is displayed.
The reproduction of the song “sic and Dance” is started (step S14). When the next song is selected, the highlight display moves, and the highlight display is performed for the next song name.

When it is determined that there is no track text (step S12), the OSD display process as in step S13 is not performed and the normal background is maintained (step S15), and music is played by the operation of the play key of the operation unit 12. Is started (step S16). In this case, since the SACD menu screen is not displayed, it is necessary for the user to perform a music selection operation while checking the music menu table or the like.

As described above, according to the present embodiment, when music recorded on the SACD is played back,
The display section displays album information and artist information as well as song information.
Also, since the selected song name is highlighted, you can select the song while watching the song name.
Therefore, the music selection operation can be performed efficiently and the usability is improved.

It is a block diagram which shows the structure of the optical disk reproducing | regenerating apparatus concerning one Embodiment of this invention. It is a figure which shows the structure of the disc area in SACD in the said embodiment. It is a figure which shows the structure of the audio area in the 2-channel area in FIG. 2, for example. It is a figure which shows the structure of the TOC area in the TOC-1 area in FIG. 3, for example. It is a figure which shows the structure of the master TOC area in FIG. It is a figure which shows the structure of each master TOC in FIG. It is a figure which shows the structure of the track text in the said embodiment. It is a figure which shows an example of the screen of the SACD menu displayed based on the content of TOC_Text in FIG. It is a flowchart for demonstrating the track text acquisition process in the said embodiment. It is a flowchart for demonstrating the music information display process in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk 11 System controller 111 SACD recognition means 112 Master text acquisition means 113 Track text presence determination means 114 Track text acquisition means 115 Text acquisition control part 116 Display processing means 117 Display control part

Claims (6)

In an optical disc reproducing apparatus capable of reproducing even a hybrid type SACD (Super Audio Compact Disc) composed of double layers, it recognizes that the inserted optical disc is an SACD when it is an SACD. SACD recognizing means for performing, a master text obtaining means for obtaining the master text of the disc information after being recognized as the SACD, a track text presence / absence judging means for judging the presence / absence of the track text of the disc information, and the track text A text acquisition control unit having track text acquisition means for acquiring the track text when it is determined that there is,
When the track text presence / absence determining means determines that there is a track text when a menu screen display request is generated, album information and artist information are displayed using the master text, and song information is displayed using the track text. And a system controller including a display control unit having display processing means for highlighting the selected song title. In an optical disk reproducing apparatus capable of reproducing even a hybrid SACD (super audio compact disk) composed of double layers, when the inserted optical disk is an SACD and the track information is included in the disk information The optical disk reproducing apparatus further comprises a system controller for displaying song information using the track text. When the inserted optical disk is SACD, the system controller
A SACD recognizing means for recognizing D, a track text presence / absence determining means for determining the presence or absence of track text in the disc information after being recognized as the SACD, and a track when it is determined that the track text exists. 3. The optical disk reproducing apparatus according to claim 2, further comprising a text acquisition control unit having track text acquisition means for acquiring text. The system controller displays the track information using the track text when the menu text display request is generated by the track text presence / absence determining means, and highlights the selected song name. 4. The optical disk reproducing apparatus according to claim 3, further comprising a display control unit having display processing means. 4. The optical disc reproducing apparatus according to claim 3, wherein the system controller includes a text acquisition control unit having a master text acquisition unit that acquires a master text of disc information after being recognized as an SACD. 5. The optical disk reproducing apparatus according to claim 4, wherein the system controller includes a display control unit having display processing means for displaying album information and artist information using the master text.

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