JP2001312880A - DVD menu display system - Google Patents

Abstract

(57) [Summary] [Problem] To display a root menu and a title menu on the same screen, so that a menu suitable for the operation purpose of the user can be selected and operated. Thus, the operability of the menu is improved. Kind Code: A1 Abstract: Title menu information (VMGI)
/ VMGM_VOBS), information on the root menu (VTSI / VTSM_VOBS), and title information (VTSTT_VOBS, etc.) when reproducing recorded information from an information storage medium (DVD disc). Based on the information on the title menu, a root menu (21) and a title menu (22) related to the content information are simultaneously displayed on the same screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system that can automatically display one or more DVD menus on one display screen.

[0002]

2. Description of the Related Art In recent years, a DVD playback system for a moving image, which plays back an optical disk on which digital data such as video and audio data is recorded, has been developed. Is progressing. In accordance with the MPEG2 system layer, this DVD standard supports MPEG2 as a moving picture compression method, AC3 audio, MPEG audio, linear PCM, etc. for audio, and sub-picture data obtained by run-length-compressing bitmap data for subtitles. Control data (navigation pack) is added for special playback such as fast rewind. In addition, the DVD standard conforms to the ISO 9 standard so that data can be read by a computer.
660 and UDF bridge (micro UDF) are supported. Furthermore, in the DVD standard, a multi-angle function (a function of recording moving image data of various angles progressing simultaneously in a time-division manner and reproducing only one desired angle), a menu function (a simple language for menu: navigation) Commands are added, and functions such as a menu display function that combines main video data (main video) and subtitle data (sub-video) are included, enabling an unprecedented interactive way of enjoying.

Here, the menu functions include a function of displaying a button selected by a user's selection and a color changing function (highlight function) of a button indicating that the button is selected. As for the menu, the video manager menu domain (VMGM_DOM) implements the title menu. And VTS menu
The domain (VTSM_DOM) is the root menu, audio menu, sub-picture menu, angle menu,
A part-of-title (PTT) menu (or chapter menu) is realized. The title creator
These menus can be created freely, but if an audio menu, sub-picture menu, angle menu, or PTT menu exists, it must have a link function (call function) to these menus. Generally, a DVD player is provided with a root menu call button and a title menu call button as a user interface for calling the menu, and when the user calls each menu, a menu screen is displayed on a TV monitor. ing.

[0004]

However, it is difficult for the user operating the player to understand the difference between the contents of the root menu and the title menu.
This is because, depending on the title creator, the root menu and the title menu may be the same, and it is difficult to know which menu contains the menu intended by the user.

The present invention has been made in view of the above circumstances, and displays a root menu and a title menu as needed on the same screen, and selects and operates a menu suitable for the user's operation purpose, thereby improving the operability of the menu. The purpose is to improve.

[0006]

In order to achieve the above object, in the system of the present invention, information (VMGI) relating to a title menu is detected (MPU in FIG. 1 and SGI in FIG. 7).
T40 to ST44), information on route menu (V
TSI) (MPU in FIG. 1, ST50 to S in FIG. 7)
T56), the root menu (21 in FIG. 13) and the title menu (21 in FIG. 13) related to the content information (VTSTT_VOBS) based on the detected information (VMGI) on the title menu and the detected information (VTSI) on the root menu. 13 of FIG.
2) are simultaneously displayed (20A in FIG. 13 and 20 in FIG. 14).
C-20E).

The user of the system does not need to first consider which menu is to be called, but only has to perform a single operation of calling the menu. Then, one or more menu screens (displayable at that time) recorded on the information storage medium (DVD disk) are automatically displayed. The user can select an intended menu from the displayed plurality of menus and perform a desired operation from the menu.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a DVD menu display system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a D according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a DVD player incorporating a VD menu display system. As shown in FIG. 1, this DVD player (optical disc reproducing device) 1
MPU unit 2, MPEG decoder unit (video decoder unit)
3, audio data D / A converter 4, disk drive 5 for reading information from DVD disk 10, system processor 6, work memory 7, sub-picture decoder (SP decoder) 8, audio decoder 9, It comprises a video memory unit 11, an operation key panel (and / or a remote controller) 12, which is an input device for user operation, a video processor unit 13, an internal bus 14, and the like. An external speaker 17 is connected to the outside of the player 1 via an audio amplifier (or AV amplifier) (not shown).
A TV monitor (or a video projector (not shown)) 20 is connected via F. In the MPU 2 of FIG.
User interface creation unit 2A, menu determination unit 2
B and the like are incorporated as firmware, and a data memory (OSD or other use data memory) 2C is provided. Although not shown, the MPU 2 is also provided with a program memory in which other firmware (programs for performing the processes in FIGS. 6 to 12) is written. In the system processor unit 6, a data separation unit 6A and a memory I / F unit 6B are provided.

The basic flow of data in the configuration of FIG. 1 is as follows. That is, the MPU unit 2 sends a target address and a read command to the disk drive unit 5. Then, the disk drive unit 5 reads the target logical sector data from the disk 10 in accordance with the transmitted address and command, and sends the read pack data to the system processor unit 6 through a data input unit (not shown). In the system processor unit 6, the data separation unit 6
A divides the transmitted pack data into packet data, transfers video packet data (MPEG-encoded data) to the video decoder unit 3 according to the content (purpose) of the data, and converts the audio packet data into an audio decoder. The sub video packet data is transferred to the SP decoder unit 8. The navigation pack NV_PCK and other packs (audio pack A_PCK, video pack V_PCK, sub-picture pack S
P_PCK, etc.) is processed by the MPU unit 2 as appropriate.
The data is transferred to the work memory unit 7 via the memory I / F unit 6B and stored there. Each packet data sent to each decoder section performs a reproduction process in synchronization with a value of a reproduction time stamp (PTS) in the packet data. Thus, for example, a moving image (movie) with English audio and Japanese subtitles can be displayed on the screen of the TV monitor 20.

Inside the MPU 2, an on-screen display (OSD) or the like that provides a user interface for visually operating and confirming by a user is generated using the internal data of the data memory 2C. This generation is performed by firmware called a user interface generation unit 2A, and the generated OSD data is stored in the video memory unit 11. Also, inside MPU2,
A menu determining unit 2B for determining the type of menu (root menu, title menu, etc.) taken out of the disc 10 is provided in the form of firmware.
The data structure of information recorded on one disk 10 will be described later.

FIG. 2 is a diagram showing a D signal according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a hierarchical data structure of a DVD disk used in the VD menu display system. As shown, the DVD disk 10 has a lead-in area on the inner circumference side, a lead-out area on the outer circumference side, and a volume space 28 between them. The volume space 28 includes a volume / file structure information area 70, a DVD video area 71, another recording area 73, and the like. Other recording area 7
3, information usable in the video title set VTS or other information (eg, computer information) unrelated to the video title set can be recorded. This recording area 73 is not essential, and may be deleted if not used. The volume / file structure area 70 corresponds to a management area defined by ISO9660 and the UDF bridge. Based on the description of the area 70, the contents of the video manager VMG are stored in the memory of the DVD player. The areas 70 to 73 are divided on the boundary of the logical sector. Here, one logical sector is defined as 2048 bytes, and one logical block is also 20 bytes.
Defined as 48 bytes. Therefore, one logical sector is defined as being equivalent to one logical block. The DVD video area 21 includes management information called a video manager VMG,
One or more (up to 99) video title sets VTS #
N.

The management information VMG file 74A includes the video manager information VMGI, a video object set VMGM_VOBS for video manager menu (optional), and a backup VMGI_B of VMGI.
It is composed of UP. VMGI includes a video manager information management table VMGI_MAT (not shown), a title search pointer table TT_SRPT, a video manager menu PGCI unit table VMGM_PG.
CI_UT (not shown), parental management information table PTL_MAIT (not shown), video title set attribute table VTS_ATRT (not shown), text data manager TXTDT_MG (not shown), video manager menu cell address table VMGM_
C_ADT (not shown) and video manager menu video object unit address map VMG
M_VOBU_ADMAP (not shown).

TT_SRPT included in VMGI is title search pointer table information TT_SRPTI.
(Not shown) and one or more title search pointers T
T_SRP. Each TT_SRP includes a reproduction format TT_PB_TY of the corresponding title (one sequential PGC title, one random PGC title, multi-PGC title, etc.), the number of angles AG
L_Ns (not shown), part-of-title number (chapter number) PTT_Ns (not shown), parental ID field TT_PTL_ID_FLD (not shown) of the title, VTS number VTSN (not shown), VTS title number VTS_TTN (not shown) (Not shown), VTS start address VTS_SA (not shown). During TT_PB_TY, a user operation flag bit UOP0 for determining whether to permit a user operation for time search / time play, a user operation flag for determining whether to permit a user operation for chapter search (PTT search) / chapter reproduction (PTT reproduction) The bit UOP1 can be described.

On the other hand, individual video title sets (FIG. 2)
The file 74B of the video title set information VTS # N which is the management information of the title
I, video object set VTSM_VOBS for video title set menu (optional), video object set V for video title set title
TSTT_VOBS (video content) and VT
It is composed of SI backup VTSI_BUP. Each video object in each VTS has a similar structure except for the difference in its use. Each video title set VTS includes video data compressed according to the MPEG standard, audio data compressed (or uncompressed) according to a predetermined standard, and sub-picture data compressed at run length according to a predetermined rule. Various information for reproducing data is stored. The number of files 74B constituting each VTS is set to, for example, a maximum of 12. The files 74A and 74B are partitioned by logical sector boundaries.

The management information VTSI of each VTS includes a video title set information management table VTSI_MAT (not shown), a video title set part of title search pointer table VTS_PTT_SRPT (not shown), a video title set program chain information table VTS_PGCIT, and a video. Title set menu PGCI unit table VTSM_PGCI_U
T (not shown), video title set time map table VTS_TMAPT (not shown), video title set menu cell address table VTSM_C_
ADT (not shown), video title set menu video object unit address map VTSM_V
OBU_ADMAP (not shown), video title set cell address table VTS_C_ADT (not shown), and video title set video object unit address map VTS_VOBU_ADMAP
(Not shown).

The VTSM_PGCI_UT includes one or more video manager menu program chain information search pointers VTSM_PGCI_SRP, and each VTSM_PGCI_SRP is a video title set menu program chain category VTSM_PG.
C_CAT. This VTSM_PGC_CA
In T, information of a menu ID for identifying various menus is stored.

The VTS_PGCIT is video title set information table information VTS_PGCITI (not shown), and one or more VTS_PGCI search pointers VT.
S_PGCI_SRP (not shown), and one or more video title set program chain information VTS_P
Contains GCI. Each VTS_PGCI (hereinafter simply referred to as program chain information PGCI) includes general program chain information PGC_GI, a program chain command table PGC_CMDT (not shown), a program chain program map PGC_PGMAP (not shown), and a cell reproduction information table C_PBIT (not shown). And a cell position information table C_POSIT (not shown).

The PGC_GI includes PGC content PGC_CNT (not shown), PGC playback time PGC_GI
PB_TM (not shown), PGC user operation control PGC
_UOP_CTL, PGC audio stream control table PGC_AST_CTLT (not shown), PGC
Sub-picture stream control table PGC_SPST_CT
LT (not shown), PGC navigation control PGC_
NV_CTL (not shown), PGC sub-picture palette PG
C_SP_PLT (not shown), start address of PGC_CMDT PGC_CMDT_SA (not shown), PG
Start address of C_PGMAP PGC_PGMAP_S
A (not shown), start address C_PB of C_PBIT
IT_SA (not shown), and the start address of C_POSIT C_POSIT_SA (not shown). In the PGC_UOP_CTL, user operation flag bits UOP0 to UOP3, UOP5 to UOP24 for determining whether or not a user operation is possible when the PGC is being reproduced.
Can be described.

On the other hand, the contents (video contents) of VTSTT_VOBS of each VTS include one or more cells (C_ID).
N # 1 to # 5, C_IDN # 1 to # 2,..., C_IDN
# 1 to #i) video object (VOB_
IDN # 1, VOB_IDN # 1,..., VOB_IDN
#I), the reproduction order of the cells indicated by these VOB_IDN # is PGC # 1, PGC # 2,
..., determined by PGC # k.

FIG. 3 is a view for explaining the hierarchical data structure of the navigation pack recorded on the DVD disk of FIG. VTSTT which is a set of information in cell units
_VOBS, one or more program chains PGC
Information is recorded. That is, one VTS includes one or more PGCs, one PGC includes one or more programs, one program includes one or more cells, and one cell includes a plurality of video object units V.
It is composed of OBU. The data of each cell is composed of multiple VOs.
BU is cut and recorded. Each VOBU has a navigation pack NV_PCK at the beginning, and further includes various types of data packs (audio packs A_PC
K, video pack V_PCK, sub-picture pack SP_PC
K etc.). Each pack is composed of a pack header and one or more packets. here,
A pack is a minimum unit for performing data transfer processing.
On the other hand, the minimum unit for performing logical processing is a cell, and logical processing (reproduction or the like) is performed in this unit, whereby the reproduction order can be changed or branching can be performed.

Each navigation pack NV_PCK is
A pack header, a system header, a packet header of a PCI packet, and a sub-stream I of a PCI packet.
D, playback control information PCI data, a packet header of a DSI packet, and a substream I of the DSI packet.
D and data search information DSI data. The DSI data includes DSI general information, seamless reproduction information, seamless angle information, VOBU search information, synchronization information, and the like. On the other hand, PCI data is
General information, non-seamless angle information, highlight information HLI, recording information, and the like are included. The PCI general information includes NV_PCK_LBN (not shown) in which the address of the navigation pack is described by a relative logical block number,
Category VOBU_CAT (not shown) of the corresponding VOBU, user operation control VOBU_UOP of the corresponding VOBU
_CTL, playback start time of the corresponding VOBU VOBU_S_
PTM (not shown), playback end time VO of the corresponding VOBU
BU_E_PTM (not shown), end time of sequence end included in corresponding VOBU VOBU_SE_E_P
TM (not shown), cell elapsed time C_ELTM, and the like.

In the above-mentioned VOBU_UOP_CTL, user operation flag bits UOP3 to UOP16, U, which determine whether or not a user operation can be performed when the corresponding VOBU is being reproduced.
OP18 to UOP24 can be described.
In other words, VOBU_UOP_ in NV_PCK
The type of key that can be used during VOBU playback is specified according to the contents of the UOP bit of the CTL.

Highlight information HLI in PCI data
Means highlight general information, button color information table,
And a button information table. The button information table includes one or more button information (not shown),
Each button information includes button position information, adjacent button position information, and a button command. The button position information includes the button color number information and the button position information (X
-Y coordinate information), auto action mode information indicating a button selection / activation (action) state, and the like.

As will be described later, for example, FIG.
As illustrated in (c), when a menu screen is reduced and a plurality of menus are simultaneously displayed on one screen, a button operation may be performed from the reduced menu. In this case, since the actual button position (the mark operated by the user when selecting a menu item) is shifted from the case where the image is not reduced, it is necessary to correct the position data of the button so as to match the reduced menu. The correction of the position data includes the display position of the reduced menu on the screen (for example, the XY coordinate of the upper left corner of the reduced menu display area), the reduction ratio (1/2 or 1/4, etc.), and FIG. This can be performed based on the button position information.

In the DVD video system, a simple language called a navigation command is prepared in order to enhance interactivity. The button command in FIG. 3 is also a kind of navigation command, and when the button is activated (action), the corresponding navigation command is executed. This navigation command is transmitted before and after the reproduction of the program chain, after the reproduction of the cell, after the reproduction of the VOBU, the navigation pack NV_
Each can be performed during the PCK process.

FIG. 4 is a diagram for explaining the types of menu information recorded on the DVD disk of FIG. 2 and the hierarchical structure of the menu used in the DVD player 1 of FIG. This diagram is also a conceptual diagram for explaining the correspondence between the system menu and the user operation functions.

In a DVD player, a title menu and a root menu (main menu) are indispensable, and a title menu is a video manager menu (V
MGM), and the root menu is handled by a video title set menu (VTSM).

As shown in FIG. 3, the video title set menu has a hierarchical structure composed of a root menu and various lower hierarchical menus. Here, the category (VTSM_PGC_CAT) of the program chain for the video title set menu is configured as follows. That is, although not shown, VT
The lower 8 bits of SM_PGC_CAT are assigned to the lower bits of the parental identification field, the next 8 bits are assigned to the upper bits of the parental identification field, the next 4 bits are reserved as a reserved field, and the next 2 bits specify the block type. The next two bits specify the block mode, the next four bits describe the menu identifier (menu ID), the next three bits are reserved as a reserved field, and the last one bit (the 32nd bit) is the entry type. Is specified.

First, if the first entry type is 1b (binary 1) counting from the upper bit of 4 bytes (32 bits), it indicates that the corresponding program chain (PGC) is an entry PGC, and if it is 0b, the corresponding program chain (PGC) is applicable. This indicates that the program chain is a program chain other than the entry PGC.

The contents of the subsequent 4-bit menu identifier (menu ID) are determined as follows. If the entry type is 0b, 0000b is entered in the menu ID, and if the entry type is 1b, the following binary code is entered in the menu ID.
That is, 0011b is entered for the root menu, 0100b is entered for the sub-picture menu, 0101b is entered for the audio menu, 0110b is entered for the angle menu, and 0111b is entered for the part of title (such as chapter) menu.
Is entered. Other 4-bit binary codes of menu identifiers (menu IDs) are reserved for other uses.

If the 2-bit block mode following the menu identifier (menu ID) is 00b, it indicates that it is not a program chain in the corresponding block, and if it is 01b, it indicates that it is the first program chain in the corresponding block. If it is 10b, it indicates that it is the program chain in the corresponding block.
If it is b, it indicates that it is the last program chain in the corresponding block. The following 2-bit block type is 0
If it is 0b, it indicates that it is not a part of the corresponding block, and if it is 01b, it indicates that it is a parental block (a block whose reproduction is allowed only under specific conditions). The subsequent 8 + 8 bits are an area in which information (flag bit string) for determining the reproduction condition of the parental block is described.

FIG. 5 is a view for explaining a part of the user operation control information recorded on the DVD disk of FIG. This figure shows the user operation control (UOP0, UOP1) in the title reproduction type TT_PB_TY in FIG. 2, the user operation control (UOP0 to UOP24) in the user operation control PGC_UOP_CTL in FIG. 2, and the user operation control VOBU_UOP_CTL in FIG. User operation control (UO
P0 to UOP24) Each control flag (UOP0 to UOP0)
UOP24 bits) and their corresponding user functions are partially shown. Of the 24 UOPs, UOP0 specifies prohibition / permission of time reproduction and time search by the user, and is included in TT_PB_TY or PGC_UOP_CTL. Here, UOP
The user operation corresponding to the case where the bit is “0” is permitted (○ in the figure), and the user operation corresponding to the case where the UOP bit is “1” is prohibited (× in the figure).

In the example of FIG. 5, UOP1 designates the prohibition / permission of the part-of-title playback and the part-of-title search by the user, and TT_PB_TY
Alternatively, it is included in PGC_UOP_CTL. UOP2 specifies prohibition / permission of title reproduction by the user, and is included in PGC_UOP_CTL. UOP3 designates the prohibition / permission of the user's reproduction stop.
It is included in GC_UOP_CTL. UOP4 not shown
Specifies the prohibition / permission of various GoUp operations by the user (operation for increasing the numerical value in the title domain, the numerical value in the menu space, or the numerical value of the program chain number when the numerical value of the program chain number is FFFFh). , VOBU_UOP_CTL. UOP5 designates prohibition / permission of time search or part of title search by the user, and PGC_UOP_CTL
Alternatively, it is included in VOBU_UOP_CTL. UOP6 (not shown) designates prohibition / permission of a previous (preceding) program search or a head program search by the user, and is PGC_UOP_CTL or VOBU_UOP_
Included in CTL. UOP7 (not shown) designates prohibition / permission of the next (subsequent) program search by the user, and includes PGC_UOP_CTL or VOBU_UOP_
Included in CTL. UOP8 is for designating prohibition / permission of forward scan (fast forward) by the user.
It is included in UOP_CTL or VOBU_UOP_CTL. UOP9 is backward scan by the user (fast rewind)
Specifies the prohibition / permission of PGC_UOP_CT
L or VOBU_UOP_CTL. UOP
Reference numeral 10 designates prohibition / permission of the title menu call by the user, and is designated by PGC_UOP_CTL or VO.
It is included in BU_UOP_CTL.

The UOP 11 designates the prohibition / permission of calling the root menu by the user, and PGC_UOP_
CTL or VOBU_UOP_CTL. U
OP12 designates the prohibition / permission of calling the sub-picture menu by the user, and PGC_UOP_CTL or VGC_UOP_CTL
It is included in OBU_UOP_CTL. UOP13 designates the prohibition / permission of calling the audio (voice) menu by the user, and includes PGC_UOP_CTL or VO
It is included in BU_UOP_CTL. The UOP 14 designates prohibition / permission of the angle menu call by the user, and includes PGC_UOP_CTL or VOBU_UOP.
_CTL. UOP15 designates prohibition / permission of calling of a part-of-title (chapter) menu by the user, and includes PGC_UOP_CTL or VO
It is included in BU_UOP_CTL. UOP16 designates prohibition / permission of the resume operation by the user.
PGC_UOP_CTL or VOBU_UOP_CT
L. The UOP 17 performs various button operations (upper button selection, lower button selection, left button selection,
Right button selection, button selection, or button selection / determination)
Specifies the prohibition / permission of PGC_UOP_CT
L. The UOP 18 designates prohibition / permission of a still (still image) off operation by the user.
It is included in UOP_CTL or VOBU_UOP_CTL. The UOP 19 designates prohibition / permission of a pause (pause) on operation by the user, and PGC_UOP
_CTL or VOBU_UOP_CTL.
Note that the UOP 19 may be used to specify prohibition / permission of a user operation for pausing off or selecting a menu language. UOP 20 designates prohibition / permission of the audio stream change operation by the user,
It is included in OP_CTL or VOBU_UOP_CTL. The UOP 21 designates prohibition / permission of a sub-picture stream change operation by the user, and is PGC_UOP_C.
TL or VOBU_UOP_CTL. UO
P22 designates the prohibition / permission of the angle change operation by the user, and PGC_UOP_CTL or VOB
It is included in U_UOP_CTL. Note that the UOP 22 may be used to designate prohibition / permission of a user operation for parental level selection or parental application country selection. A UOP 23 (not shown) designates prohibition / permission of a karaoke sound reproduction mode change operation by the user, and is PGC_UOP_CTL or VOBU_UOP_
Included in CTL. The UOP 24 designates prohibition / permission of the video playback mode change operation by the user.
It is included in C_UOP_CTL or VOBU_UOP_CTL.

The basic reproduction procedure including the operation of reading recorded information from the disk of FIG. 2 by the DVD player of FIG. 1 will be described below with reference to FIGS.

FIG. 6 shows the state of FIG. 2 by the DVD player of FIG.
FIG. 7 is a flowchart for explaining an initial operation (before starting normal reproduction) when recording information is read from a disc.

First, a DVD disk 10 is set on a disk tray (not shown) of the DVD player shown in FIG.
Operation key panel (or remote controller) in Fig. 1
When the close button (not shown) on the disc 12 is pressed (or when the play button is pressed in a stopped state after the disc is set), the disc 10 is driven to rotate (step ST10), and reading is performed from the lead-in area. It is started (step ST12). Then disk 10
Volume descriptor (logical block number LB)
N: 030000H) is read (step ST1).
4) It is determined whether this disk is a DVD disk. Specifically, the standard identifier Standard Identifier in the volume descriptor is “CD00
Whether the set disc is a CD or a DVD can be determined based on whether it is 1 ". If the set disc is a CD (No in Step ST16, Yes in Step ST18), the process proceeds to the CD reproduction processing. Move on.
If the set disk is neither a DVD nor a CD (No in step ST16, no in step ST18), the process ends.

If the set disc is a DVD (step ST16 YES), the root directory record is read (step ST20), and a directory "VIDEO_TS" containing DVD video data is searched (step ST22). If the searched directory is not "VIDEO_TS" (step ST2)
4 No), the search of other directories is continued (steps ST26, ST22, ST24). "VID
If “EO_TS” is not found to the end (step S
T26 No), the process ends. Directory "VID"
If "EO_TS" is found (YES in step ST24), a VTS subdirectory file search is executed (step ST28), and a record in the VTS subdirectory is read (step ST30). "VIDEO_TS" including the video manager information VMGI in the record is read.
TS. If "IFO" is not found (step ST32)
No, Step ST34 No), the process ends. VM
If "VIDEO_TS.IFO" including the GI is found (YES in step ST32), the process shifts to a normal DVD reproduction process.

FIGS. 7 to 9 are flow charts for explaining the normal reproduction process when the recorded contents are reproduced from the disc of FIG. 2 by the DVD player of FIG.

In FIG. 7, "VIDEO_TS.IF
The video manager information management table VMGI_MAT is read from the VMGI of "O" (step ST4).
0). Although not shown, in VMGI_MAT, VTS_Ns indicating the number of title sets, start address TT_SRPT_S of the title search pointer table
A, Start address TXTD of text data manager
T_MG_SA and others are described. Based on these descriptions, the number N of title sets is set, and TT_
The address of SRPT is set, and the address of TXTDT_MG is set (step ST42).

Subsequently, the video manager menu (title menu in FIG. 4) is reproduced according to the information of the VMGI, and the VM displaying the title menu on the monitor screen is displayed.
G menu processing is executed (step ST44). Here, the TT_SRPT in the VMGI is read (step ST46), and a plurality of selectable titles are displayed on the VMG menu (title menu) (Disc 1).
0 when a plurality of titles are recorded). DV of FIG.
The user of the D player 1 can select a desired title from the displayed title menu. By this selection, the title number M (M is 1 or more and N or less) to be reproduced is determined (step ST48). In particular,
The TT_SRPT read in step ST46 includes N title search pointers TT_SRP # 1 to TT_S
RP # N, one of them (TT_SRP # M)
Is determined in step ST48.

The determined title search pointer TT_
SRP # M includes start address information VTS_SA of the selected title (VTS # M). This VTS
The start address of the target VTS # M can be known from _SA. From this start address, the address of the video title set information VTSI arranged at the head of VTS # M is set (step ST50). Next, this VT
Video title set information management information VTSI from SI
_MAT is read (step ST52). Although not shown, the VTSI_MAT includes attributes, the number of streams, and other information for each of video, audio, and sub-picture. Based on these information, the video decoder, audio decoder and sub-picture decoder in the DVD player of FIG. 1 are initialized (step ST54). Subsequently, the video title set menu (the root menu in FIG. 4) is reproduced according to the information of the VTSI, and the VTS for displaying the root menu and various menus under the root menu (audio menu, sub-picture menu, chapter menu, etc.) on the monitor screen. Menu processing is executed (step ST56).

Next, in FIG. 8, the part-of-title search pointer table information PTT_SR in the VTSI
The PTI is read (step ST58), and a playback title unit (a group of one or more PTT_SRPs in the playback title, which summarizes one or more chapter groups as viewed from the user) is displayed on the monitor screen (step ST60). ). This title unit number n is 1
This is equal to or less than N (N is the total number of titles in the disc). When the user selects the VTS menu (chapter menu / P
When a specific title unit to be reproduced is selected from the (TT menu), PTT_SRPT in VTSI corresponding to the selected title unit is read (step ST62). A program chain number PGCN and a program number PGN to be reproduced are determined from the read PTT_SRPT (step ST64). Although not shown, the PTT_SRPT includes n title unit search pointers TTU_SRP, and each TTU_SRP includes one or more PTT search pointers.

Next, the video title set P in the VTSI
The GC information table VTS_PGCIT is read (step ST66), and all data of this VTS_PGCIT is stored in the work memory unit 7 of FIG. 1 (step ST68). The stored VTS_PGCIT includes one or more search pointers VTS_PGCI_SRP,
Each VTS_PGCI_SRP includes VTS_PGC category information VTS_PGC_CAT. This VTS_P
GC_CAT includes information of a block type for identifying whether or not the corresponding PGC block is a parental block, and information of a parental ID field. If the block type indicates a parental block (step ST70 YES), a parental process is performed based on the information in the parental ID field to determine whether or not to reproduce the contents of the parental block (step ST70). Step ST72). This parental processing is used for the purpose of keeping children from viewing contents intended for adults. If the target to be processed in step ST72 corresponds to the parental operation (the parental lock is set) (step ST74: YES), the program chain number PGCN is incremented (step ST76),
It moves to the block of the next PGC number. If the current PGC block does not correspond to the parental operation (the parental lock is not applied) (NO in step ST74), the PGCI corresponding to the PGC number is set in step S74.
It is extracted from the PGCIT data stored in T68 (step ST78). If it is determined in step ST70 that the block is not a parental block (NO in step ST70), the above steps ST72 to ST7 are performed.
Step 6 is skipped.

PGCI extracted in step ST78
Includes program chain general information PGC_GI.
This PGC_GI is not shown, but the PG shown in FIG.
In addition to C_UOP_CTL, PGC audio stream control table PGC_AST_CTLT, PGC sub-picture stream control table PGC_SPST_CTL
T, PGC sub-picture palette PGC_SP_PLT, etc. These information (PGC_AST_CTLT,
PGC_SPST_CTLT, PGC_SP_PLT
, Etc.), various initial settings of sub-pictures and audios (such as which sub-picture palette is used for color display of sub-pictures, what audio channel to reproduce, etc.) are performed (step ST80). Specifically, initialization for reproduction is performed for each decoder in the DVD player 1 of FIG. 1, and the address of a table used for reproduction is stored in the work memory unit 7.

Next, referring to FIG. 9, a video title set cell address table VTS_C_AD in VTSI is shown.
T is read (step ST82), and VTS_C_A
All data in the DT is stored in the work memory unit 7 of FIG. 1 (step ST84). This saved VTS_
In C_ADT, the start address and end address of all cells are described, and all interleaved units in VTSTT_VOBS are described. Specifically, VTS_C_ADT describes one or more video title set cell piece information VTS_CPI (not shown). Each VTS_CPI is not shown, but the corresponding video title set cell piece VTS_C
ID number of VOB for P, VTS_VOB_IDN,
Cell ID number VTS_C_ID for VTS_CP
N, VTS_CP start address VTS_CP_SA,
It includes the end address of VTS_CP, such as VTS_CP_EA.

Next, the command table PGC_CMDT in the PGCI is extracted from the data stored in the work memory unit 7 in step ST68 of FIG. 8 (step ST86). The PGC_CMDT includes one or more pre-commands PRE_CMD, one or more post commands POST_CMD, and one or more cell commands C_CMD.
Etc. are included. The pre-command (pre-processing command) PRE_CMD is executed (step ST8).
8), the command processing target program number PGN and cell ID number VTS_C_IDN are stored in the work memory unit 7 of FIG.
(Step ST90). Next, step S
At T90, it is determined whether or not the cell corresponding to the cell ID number stored at random is reproduced. In the case of random playback (YES in step ST92), the MPU 2 in FIG.
A random number (random number) R is generated internally by a random function, and the process of reproducing a cell having a cell ID number corresponding to the random number R is started (step ST96). If random playback is not performed (No in step ST92), step ST9 is performed.
Steps 4 to ST96 are not performed, and a process of performing cell reproduction corresponding to one or more VTS_CPIs in VTS_C_ADT is performed (step ST98).

Subsequently, a still time (0 to 254 seconds or unlimited) is set by the navigation system (step ST100), and the still (PGC still) is executed for the set time (step ST10).
2). After that, the command table PGC_ in the PGCI
Post command (post-processing command) included in CMDT
POST_CMD is executed (step ST104),
The PGC number PGCN is updated (step ST10).
6) The updated PGCN is read. PG after update
If CN is not zero (NO in step ST108), the processing from step ST70 in FIG. 8 to step ST106 in FIG. 9 is executed again. If the updated PGCN is zero (YES in step ST108), there is no next PGC, and the normal reproduction processing in FIGS. 7 to 9 ends.

FIG. 10 is a flow chart for explaining the process when the recorded contents of the cell are reproduced from the disc of FIG. 2 by the DVD player of FIG.

When cell reproduction is started (step ST2)
00), the reproduction start address (logical block number LBN) of the corresponding cell is determined from the contents of the PGCI stored in the work memory unit 7 in FIG. 1 (see step ST68 in FIG. 8).
Is determined (step ST204). Specifically, P
The GCI includes a cell reproduction information table C_PBIT (not shown), and the C_PBIT includes one or more cell reproduction information C_PBI (not shown). Although not shown, each C_PBI includes a cell category C_CAT including information indicating whether the corresponding cell is an angle block, a reproduction time C_PBTM of the corresponding cell, a start address C_FVOBU_SA of a head VOBU in the corresponding cell, and a head in the corresponding cell. End address of interleave unit C_FILVU
_EA, start address C_ of the last VOBU in the corresponding cell
LVOBU_SA, end address C_LVOBU_EA of the last VOBU in the corresponding cell, and the like. Among them, C_FVOBU_SA can determine the reproduction start address of the corresponding cell. A read command is set in the disk drive unit 5 of FIG. 1 based on the address thus determined (step ST206).

When the read command is set, the disk drive unit 5 reads the VOBU from the address determined in step ST204. Then, the read V
Navigation pack placed at the top of OBU (Fig. 3
NV_PCK) is taken in (step ST20).
8), stored in the work memory unit 7 of FIG. This NV
Based on the synchronization information included in the DSI data (FIG. 3) in the _PCK, the internal system time clock STC (not shown) of the DVD player 1 in FIG. 1 is set (step ST210). The NV_PCK PCI data (FIG. 3) includes highlight information HLI.
Using this HLI or the like, a navigation pack process including a menu highlight process and the like is executed (step ST212). Thereafter, when the VOBU still is executed (Yes in step ST214), the process waits until the reproduction of the VOBU is completed (step ST216), and the VOBU still process is started (step ST218). The still time of the VOBU still is unlimited, and the VOBU still is continued until the user operates the reproduction key, for example. When the VOBU still is not executed (step S
(No at T214), steps ST216 to ST218 are skipped.

Navigation Pack Processing (Step ST)
212) or after VOBU still (step ST2)
18) After the release, if the current playback target is not the last of the corresponding cell (No in step ST220), step S220 is performed.
The processing of T210 to ST218 is repeated. If the playback target at that time is the last of the corresponding cell (step S
(T220 Yes), wait until the reproduction of the corresponding VOBU is completed (step ST224), and enter a cell still process (still reproduction for a set time) (step ST226). If there is a cell command after the cell still processing (step S
In T228), a cell command process is performed (step ST230), and the process returns to another process routine. If there is no cell command (NO in step ST228), the process returns to another processing routine without performing the cell command process.

FIG. 11 shows the user operation inhibition information (VOBU_UO) from the disc of FIG. 2 by the DVD player of FIG.
FIG. 14 is a flowchart illustrating a process of reading (P_CTL). Processing for storing VOBU_UOP_CTL in work memory unit 7 in FIG. 1 (step ST250)
Is performed as part of the navigation processing in step ST212 in FIG.

FIG. 12 is a flowchart for explaining the process of reading the information of the root menu / title menu from the disc of FIG. 2 by the DVD player of FIG. 1 and displaying the menu.

First, it is assumed that the user presses a DVD menu button (not shown) on the operation key panel (remote controller) shown in FIG. 1, for example. Thereby, a menu display request is issued from the user (step ST30).
0). When this menu display request is issued,
The calling operation of the root menu is prohibited (see UOP1 in FIG. 5).
1 = “1”; step ST302: Yes, if the operation of calling the title menu is also prohibited (UO in FIG. 5)
P10 = “1”; Yes in step ST304), FIG.
Ends, and returns to the other processing routines. When the call operation of the root menu is prohibited but the call operation of the title menu is permitted (UOP10 = "0" in FIG. 5; NO in step ST304),
Only the title menu is displayed on the TV monitor screen (step ST306), and the process returns to other processing routines. On the other hand, the call operation of the root menu is permitted (UOP11 = “0” in FIG. 5; step ST3).
02 No), when the call operation of the title menu is prohibited (Yes in step ST308), only the root menu is displayed on the TV monitor screen (step ST308).
306), and return to other processing routines.

When both the root menu calling operation and the title menu calling operation are permitted (step ST3)
02 No; Step ST308 No), it is checked whether the root menu and the title menu are the same. This identity check can be made based on whether both the root menu and the title menu use the same menu video object. If the root menu and the title menu are the same (YES in step ST312), only one of the root menu and the title menu is displayed on the TV monitor screen (step ST314), and the process returns to another processing routine.

If the root menu is different from the title menu (NO in step ST312), the root menu is first searched and decoded (step ST31).
6). The searched root menu often has a size that makes full use of the TV monitor screen. So, TV
In order to display the entire root menu screen in half of the monitor screen, the decoded root menu is taken in, the pixel data is filtered, the menu image size is reduced, and the reduced root menu image data shown in FIG. The data is written to the root menu display position of the video memory unit 11 (step ST318).

Subsequently, the title menu is searched and decoded (step ST320). The searched title menu often has a size that makes full use of the TV monitor screen. In order to display the entire title menu screen on the other half of the TV monitor screen, the decoded title menu is fetched, the pixel data is filtered, the menu image size is reduced, and the reduced title menu image data is displayed. Is written to the title menu display position of the video memory unit 11 in FIG. 1 (step ST322).

Further, the video memory unit 11 containing the reduced root menu image and title menu image
Then, an OSD for menu selection (the menu screen selection pointer 23 indicated by the fingertip icon in FIG. 13A) is written into the menu (step ST324).

The root menu image thus reduced,
The contents of the video memory unit 11 in which the reduced title menu image and the menu screen selection pointer 23 (OSD) are written are output on the display screen of the TV monitor 20 in FIG. 1 (step ST326). (A) of FIG.
Illustrates this monitor screen output (user interface).

FIG. 13 shows a state in which the root menu and the title menu are read by the processing of FIG. 12 and a state in which two types of menus are simultaneously reduced and displayed, and a menu selected by the user from the reduced display menus. FIG. 4 is a diagram illustrating a state (here, a root menu) displayed in a normal size (a hierarchical structure of menu display).

The pointer 23 shown in FIG. 13A can be moved on the screen by a cursor key (not shown) provided on the operation key panel (remote controller) 12 shown in FIG. The user moves the pointer 23 to a desired menu (the root menu screen 2 in the example of FIG.
1) When the user moves up and presses an enter key (not shown) provided on the operation key panel (remote controller) 12 in this state, a root menu is selected (Yes in step ST328).

Then, the selected root menu is displayed on the screen in a predetermined size (normal size when not reduced) (step ST330). FIG. 13B shows a display example at this time.

In the above description, the case where the menu displayed on the screen is captured and displayed as a still image in any case has been described. However, depending on the content recorded on the DVD disk 10, the menu screen may be configured as a moving image menu.
In this case, only the menu pointed by the user with the OSD pointer 23 can be displayed as a moving image menu on a reduced screen. Further, if the DVD player 1 has a plurality of video decoders / sub-picture decoders and can decode and process a plurality of menus at the same time, a plurality of reduced menus can be displayed as a moving image menu.

In FIG. 13A, when the menu selected by the pointer 23 can be operated, the user can perform a desired menu operation using the menu. In this case, the size of the highlighted display portion also needs to be adjusted according to the reduction of the menu screen.

FIG. 14 illustrates a state in which a plurality of types (here, four types) of menu information are read from the disc of FIG. 2 by the DVD player of FIG. 1 and these menus are simultaneously reduced and displayed. FIG. If the monitor used is a relatively large screen and high resolution type, it is possible to simultaneously display two or more menu screens on one screen without significantly impairing the visibility of the menu.

FIG. 14A exemplifies a monitor screen 20C reduced in size by 1/4 and displaying a root menu screen 21, a title menu screen 22, a subtitle menu screen 21A, and an audio menu screen 21B simultaneously. . FIG.
4 (b) shows a route menu screen 2 which has been reduced to 1/4.
1, a monitor screen 20d on which a child screen 22A for chapter search, a subtitle menu screen 21A, and an audio menu screen 21B are simultaneously displayed. FIG.
(C) shows a subtitle menu screen 21 reduced by 1/4.
A, voice menu screen 21B, angle menu screen 2
1C and a monitor screen 20D in which a title menu screen 22 is simultaneously displayed.

As described above, FIGS. 14A and 14B
(C) In any case, a moving image menu can be displayed on any one or more of the displayed reduced screens.

[0070]

As described above, according to the DVD menu display system of the present invention, the user does not need to first consider which menu is to be called, but simply performs a single operation of calling the menu. Is fine. Then, one or more menu screens (displayable at that time) recorded on the information storage medium (DVD disk) are automatically displayed. The user can select an intended menu from the displayed plurality of menus and perform a desired operation from the menu.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a DVD player in which a DVD menu display system according to an embodiment of the present invention is incorporated.

FIG. 2 is an exemplary view for explaining a hierarchical data structure of a DVD disk used in the DVD menu display system according to the embodiment of the present invention;

FIG. 3 is an exemplary view for explaining a hierarchical data structure of a navigation pack recorded on the DVD disk of FIG. 2;

FIG. 4 is a view exemplifying a type of menu information recorded on the DVD disc of FIG. 2 and a hierarchical structure of the menu;

FIG. 5 is an exemplary view for explaining a part of user operation control information recorded on the DVD disk of FIG. 2;

FIG. 6 is a flowchart for explaining an initial operation (before starting normal reproduction) when recording information is read from the disc of FIG. 2 by the DVD player of FIG. 1;

FIG. 7 is a flowchart for explaining processing (part 1) in the case where recorded contents are reproduced from the disc of FIG. 2 by the DVD player of FIG. 1;

FIG. 8 is a flowchart for explaining processing (part 2) in the case where recorded contents are reproduced from the disc of FIG. 2 by the DVD player of FIG. 1;

FIG. 9 is a flowchart for explaining a process (part 3) in a case where recorded contents are reproduced from the disc of FIG. 2 by the DVD player of FIG. 1;

FIG. 10 is a flowchart for explaining processing when the recorded content of a cell is reproduced from the disc of FIG. 2 by the DVD player of FIG. 1;

11 is a flowchart illustrating a process of reading user operation prohibition information from the disc of FIG. 2 by the DVD player of FIG. 1;

FIG. 12 is a flowchart illustrating a process of reading information of a root menu / title menu from the disc of FIG. 2 by the DVD player of FIG. 1 and displaying a menu.

FIG. 13 shows a state in which the root menu and the title menu are read by the processing in FIG. 12; a state in which two types of menus are simultaneously displayed in a reduced state; The figure which illustrates the state where the (root menu) was displayed in the normal size.

FIG. 14 is a view exemplifying a state where a plurality of types (here, four types) of menu information are read from the disc of FIG. 2 by the DVD player of FIG. 1 and these menus are simultaneously displayed in a reduced size;

[Explanation of symbols]

1 DVD player; 2 MPU; 2A user interface creation unit; 2B menu determination unit; 2C data memory (other data memory for OSD); 3 MP
EG decoder section; 4 D / A conversion section; 5 disk drive section; 6 system processor section; 6 A data separation section; 6 B memory I / F section; 7 work memory section;
SP (sub-picture) decoder unit; 9 audio decoder unit; 10 DVD video disk (information storage medium);
DESCRIPTION OF SYMBOLS 1 ... Video memory part; 12 ... Operation key panel (remote controller); 13 ... Video processor part; 14 ... Bus; 17 ... Speaker; 20 ... TV monitor apparatus;
20E: monitor screen; 21: route menu screen; 22
... Title menu screen; 23 ... Menu screen selection pointer using on-screen display (OSC).

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5D077 AA23 BA14 CA02 CB06 DC22 DC39 EA33 EA34 HC12 HC17 HC26 5D110 AA15 AA27 AA29 DA01 DA05 DB03 DB09 DC05 DC06 DE04 DE06 FA08 5E501 AA19 BA05 CA03 CC02 EA05 EA10 EB05 FA05 FA05

Claims (11)

[Claims] 1. A system for reproducing recorded information from an information storage medium on which information relating to a title menu, information relating to a root menu, and content information of a title are recorded, wherein: a title menu detecting unit for detecting information relating to the title menu; A root menu detection unit that detects information about the root menu, based on information about the detected title menu and information about the detected root menu,
A display unit for simultaneously displaying a root menu and a title menu related to the content information. 2. The information related to the root menu includes user operation control information for controlling a user operation when the root menu and the title menu are called, and only a menu that can be selected by the user operation control information is displayed. The system according to claim 1, wherein the system is configured to be displayed on a unit. 3. The content information is recorded separately in a plurality of video object units, and a navigation pack is arranged at the head of each video object unit, and the root menu and the title menu are called during the navigation pack. The user operation control information for controlling the user operation of (1) is included, and only a menu that can be selected by the user operation control information is displayed on the display unit. 3. The system according to 2. 4. The content information is separately recorded in a plurality of video object units, and a navigation pack is arranged at the head of each video object unit. In the navigation pack, the root menu and the title menu are displayed. The system according to any one of claims 1 to 3, wherein highlight information to be used is included. 5. The method according to claim 1, wherein one of the root menu and the title menu displayed simultaneously is selected for menu operation by a user.
The system according to claim 4. 6. The display unit has a function of simultaneously displaying a plurality of menus including a menu other than the root menu or the title menu, and allows a user to perform a menu operation while the plurality of menus are displayed. The system according to any one of claims 1 to 5, wherein the system is configured as follows. 7. The method according to claim 6, wherein at least one of the plurality of menus includes a moving image.
System. 8. The system according to claim 6, wherein only the menu selected by the user among the plurality of menus includes a moving image. 9. A DVD player in which the system according to claim 1 is incorporated. 10. A system for reproducing recorded information from an information storage medium on which information related to a title menu, information related to a root menu, and content information of a title are recorded, wherein: a title menu detecting unit detecting information related to the title menu; A root menu detection unit that detects information about the root menu, based on information about the detected title menu and information about the detected root menu,
A display unit for simultaneously displaying a root menu and a title menu related to the content information, wherein a user can operate the system through a menu screen displayed on the display unit. 11. A method for reproducing recorded information from an information storage medium on which information relating to a title menu, information relating to a root menu, and content information of a title are recorded, wherein information relating to the title menu is detected, and information relating to the root menu is detected. Based on information on the detected title menu and information on the detected root menu,
A menu display method, wherein a root menu and a title menu related to the content information are simultaneously displayed.