JP2002124069A - Disk reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve interactive performance when reproducing conditions are set in the player of a DVD video disk. SOLUTION: Before a submenu selected from a main menu is decided, the display data of plural submenus is reproduced, and stored in a memory (steps 102 to 112). When one of the plural submenus is selected from the main menu, from the memory, among the plural submenus stored therein, the display data of the selected submenu is read, converted into a video signal, and this video signal is outputted (steps 121, and 131).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for reproducing a disc.

[0002]

2. Description of the Related Art Since a DVD standard disk has a large recording capacity, when recording a video signal, a movie of about 2 hours can accommodate one work on one disk. Moreover, at that time, Japanese subtitles, original language subtitles,
Japanese audio, original language audio, and the like can be accommodated together (hereinafter, a DVD standard disc on which video signals and accompanying signals are recorded is referred to as a “DVD video disc”).
).

[0003] For this reason, interactive operability is defined as a specification for a DVD video disk player. When reproducing a DVD video disc, the operation of the user and the operation of the player are, for example, as follows.

[0004] That is, when the user presses the player's play key (or sets the DVD video disc on the player), the player starts playing the DVD video disc, and the display shows, for example, as shown in FIG. The main menu is displayed. Further, the player waits for a key input.

[0005] When the user selects the item "chapter menu" in the main menu, a chapter submenu is displayed as shown in Fig. 3B, and a chapter selection screen is displayed. Then, when the user selects a target chapter, reproduction is started from the chapter.

When the item "audio menu" or "subtitle menu" in the main menu is selected, a submenu of audio or subtitle is displayed as shown in FIG. 3C or 3D, and a screen for selecting audio or subtitle is displayed. Then, when a desired audio or subtitle is selected, the selected audio or subtitle can be reproduced during reproduction.

[0007] Further, when the item "play" in the main menu is selected, the playback of the movie stored in the DVD video disc is started from the beginning.

[0008]

However, in the above-described user operation and player operation, for example, when the display state of the main menu in FIG. 3A is changed to the display state of the submenu of the chapter in FIG. 3B. In the meantime, the player is waiting for a key input in the display state of the main menu in FIG. 3A. When key input is performed,
The optical pickup is sought to the signal recording position on the display screen of FIG. 3B. When the rotation speed of the disc is stabilized, the reproduction of the signal is started from the seek position. The screen of FIG. 3B is displayed by the reproduced signal. Will be performed.

That is, when there is a key input by the user, seek is performed to a track position corresponding to the key input, and a signal necessary for the next display screen is reproduced.

[0010] For this reason, the above-mentioned processing method is simple to implement, but it takes a long time from the user's key input to the display of the corresponding screen, which impairs the interactivity.

The present invention is intended to solve such a problem.

[0012]

According to the present invention, for example, one of a plurality of submenus is selected from a main menu, and a reproduction condition of the disc is set in accordance with the selected submenu items. In the above, before the submenu to be selected from the main menu is determined, the display data of the plurality of submenus is reproduced from a disc and stored in a memory, and one of the plurality of submenus is selected from the main menu. And a display method of a disc which reads out display data of the selected submenu among the plurality of submenus stored in the memory, converts the display data into a video signal, and outputs the video signal. Is what you do. Therefore, the submenu is displayed by the display data read from the memory, and the time required for displaying the submenu is greatly reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a DVD video disk player, and reference numeral 10 denotes a DVD video disk. On the disk 10, a video signal and various signals accompanying the video signal are recorded as spiral tracks. In this example, the disk 10
Is displayed as shown in FIG. In general, characters displayed as menus and subtitles are recorded on the disc 10 in the form of character codes.

At the time of reproduction, the disk 10 is rotated by a spindle motor 31 and its rotation is servo-controlled by a servo circuit 32 so that the linear velocity of the disk 10 becomes constant. Then, a signal is reproduced from the disk 10 by the optical pickup 21, and the reproduced signal is supplied to the reproduction circuit 22.

In the reproduction circuit 22, reproduction signals such as demodulation processing, error correction processing and data decompression processing are executed on the reproduction signal from the optical pickup 21, and a video signal and audio accompanying it are reproduced. Signals (audio signals) and subtitle signals are played back,
The video signal and the audio signal are output to output terminal 2
It is taken out to 4, 25.

Since characters displayed as menus and subtitles are recorded on the disc 10 in the form of character codes, when displaying menus and subtitles, the character codes are temporarily stored in the memory 23 of the reproduction circuit 22. After being accumulated, it is converted into a video signal, and the video signal is output to a terminal 24.

A part of the reproduction signal is extracted from the reproduction circuit 22, and this signal is supplied to the servo circuit 32 to execute the spindle servo of the motor 31. Further, a predetermined signal is supplied from the reproduction circuit 22 to the servo circuit 32 to form a tracking servo signal, and this signal is supplied to the optical pickup 21 so that tracking of the optical pickup 21 is realized.

Reference numeral 33 denotes a microcomputer functioning as a system control circuit. The microcomputer 33 is connected to the reproducing circuit 22 and the servo circuit 32, and is connected to various operation keys (operation switches) 34. Have been. When a predetermined command (and parameter) is supplied from the microcomputer 33 to the reproduction circuit 22, the reproduction circuit 22 and the servo circuit 32 are configured to operate according to the command.

The microcomputer 33 is provided with, for example, a routine 100 shown in FIG. 2 as a part of a program executed by the CPU (not shown). This routine 100 is for improving the interactivity at the time of starting the reproduction of the DVD video disk 10, and its details will be described later. Note that, in FIG. 2, the routine 100 only shows portions related to the present invention.

In such a configuration, when the microcomputer 33 is in the stop state, the microcomputer 33 is in a state of waiting for key input, but when the reproduction key among the operation keys 34 is operated (or when the disc 10 is set in this player). ), The processing of the CPU of the microcomputer 33 starts from step 101 of the routine 100, and then in step 102, a command for instructing the reproduction circuit 22 to reproduce the main menu is supplied.

As a result, in accordance with the command, the motor 31 starts rotating by the servo circuit 32, the optical pickup 21 seeks to the start position of the track of the disk 10, and the reproduction of the disk 10 is started. Indicates that the character code of the main menu is reproduced, and this character code is stored in the memory 2 of the reproduction circuit 22.
3 is stored.

Subsequently, the process proceeds to step 111, in which the character code stored in the memory 23 of the reproducing circuit 22 is converted into a video signal in step 102 and taken out to the terminal 24. Therefore, a main menu is displayed on a display (not shown) as shown in FIG. 3A.

Then, the process proceeds to a step 112, in which a command for instructing pre-reading is supplied to the reproducing circuit 22. Then, the reproduction circuit 22
Reproduces a character code displayed as a submenu in FIGS. 3B to 3D from the disk 10 and stores the character code in the memory 23.

In this way, while the reproducing circuit 22 reproduces the character code displayed as the submenu from the disk 10, the processing of the CPU of the microcomputer 33 proceeds to step 113. Wait for item selection.

In the waiting for selection, when the cursor key of the operation keys 34 is operated, the cursor in the main menu moves for each item, and when the enter key of the operation keys 34 is operated, the cursor position at that time is changed. The item that has been selected is to be selected.

When the cursor is moved to the target item and the enter key is operated, the process proceeds to step 11
The process proceeds from step 3 to step 114. In step 114, it is determined which item in the main menu is the item selected in step 113, and the item selected in step 113 is determined as the "audio menu" in the main menu. Alternatively, in the case of “subtitle menu”, the process proceeds from step 114 to step 121.

Then, in this step 121, of the character codes of the submenu of FIG. 3B to FIG. 3D which are read in advance in step 112 and stored in the memory 23 of the reproducing circuit 22, the character code of the submenu selected in step 113, That is, in this case, the character code of the “audio menu” or “subtitle menu” is converted into a video signal and taken out to the terminal 24. Therefore, as shown in FIG. 3C or D, the display shows “Audio menu” or “Subtitle menu”.
Is displayed.

Then, the process proceeds to step 122. In this step 122, as in step 113, selection of an item in the submenu is awaited. When the cursor key is operated, the cursor moves for each item, and when the enter key is operated, , The item where the cursor was located at that time is selected.

Then, when the cursor is moved to the target item and the enter key is operated, the process proceeds to step 12.
From 2, the process proceeds to step 123, where it is determined whether the item selected in step 122 is the “main menu”. If the item is not the “main menu”, the process proceeds from step 123 to step 124.

Then, in step 124, the item selected in step 122 is reproduced.
The reproduction circuit 22 is set. For example, if “English surround” is selected in the audio menu of FIG. 3C, when the reproduction of the disc 10 is started, the reproduction circuit 22 is set so that the surround reproduction is performed in English sound. Alternatively, if “Japanese subtitles” is selected in the subtitle menu of FIG. 3D, the reproduction circuit 22 is set so that Japanese subtitles are displayed when the reproduction of the disc 10 is started.

When this setting is completed, the process returns to step 122 and waits for selection of an item again.

Then, since the setting of the "audio menu" or "subtitle menu" has been completed, step 12
If the user selects “Main Menu” while waiting for an item to be selected in Step 2, this is determined in Step 123, and the process proceeds from Step 123 to Step 125, and in this Step 125, as in Step 111, The character code stored in the memory 23 of the reproducing circuit 22 is converted into a video signal and
It is taken out to 4. Therefore, the main menu is displayed again on the display. Then, after that, the process waits for selection of a submenu in step 113.

That is, when the audio menu or the subtitle menu is selected in the main menu, the desired reproduction state of the audio or the subtitle can be set, and thereafter, the selection from the main menu can be performed again.

When an item of the main menu, for example, "chapter menu" is selected, the process proceeds from step 113 to step 131 through step 114. In this step 131, the memory is read ahead by step 112 and stored in the memory 23 of the reproduction circuit 22. 3B to 3D, the character code of the “chapter menu” is converted into a video signal and taken out to the terminal 24. Therefore, a “chapter menu” is displayed on the display as shown in FIG. 3B.

Then, the process proceeds to step 132. At step 122, as in step 113, the process waits for selection of an item in the submenu. When the cursor key is operated, the cursor moves for each item, and when the enter key is operated, , The item where the cursor was located at that time is selected.

Then, when the cursor is moved to the target chapter item and the enter key is operated, the process proceeds from step 132 to step 133, and in this step 133, the optical disk is moved to the position of the chapter selected in step 132. The pickup 21 is sought, and reproduction is started. Therefore, the reproduction is started from the chapter selected in step 132 with the audio and subtitle selected in step 122.

When the "play" item of the main menu is selected in step 113, the process proceeds from step 113 to step 141 through step 114, and in this step 141, the optical pickup 21 reaches the start position of the first chapter. Is sought and playback is started. Therefore, reproduction of a movie or the like is started from the beginning with the audio and subtitle selected in step 122.

Thus, according to the player described above, the DV
The D video disc 10 can be reproduced. In this case, in particular, according to the above-described player, the character code for displaying the submenu in the main menu is changed from the disc 10 during the period when the item is selected in the main menu. Since the pre-reading is prepared in the memory 23, when a sub-menu is selected, the selected sub-menu can be immediately displayed, and the interactivity is not spoiled.

In the above description, when the main menu is displayed in step 111, step 1
Although the character codes of all the sub-menus are read ahead by the reference numeral 12, it is also possible to pre-read only the character codes of the sub-menu of the item where the cursor is located among the sub-menu items in the main menu.

[List of abbreviations used in this specification] CPU: Central Processing Unit DVD: Digital Versatile Disc

[0041]

According to the present invention, the user can quickly and comfortably perform an interactive operation.

[Brief description of the drawings]

FIG. 1 is a system diagram illustrating one embodiment of the present invention.

FIG. 2 is a flowchart illustrating one embodiment of the present invention.

FIG. 3 is a diagram showing an example of a display screen.

[Explanation of symbols]

10 DVD video disc, 21 optical pickup, 22 reproduction circuit, 23 memory, 24 and 25
Output terminal, 31: spindle motor, 32: servo circuit, 33: microcomputer, 34: operation keys

Claims (2)

[Claims] 1. A disc player in which one of a plurality of sub-menus is selected from a main menu and reproduction conditions are set in accordance with the selected sub-menu items. Before being determined, the display data of the plurality of sub-menus is reproduced from a disc and stored in a memory. When one of the plurality of sub-menus is selected from the main menu, the display data is stored in the memory. A disc reproducing method for reading out display data of the selected submenu among the plurality of submenus, converting the display data into a video signal, and outputting the video signal. 2. A disc player in which one of a plurality of sub-menus is selected from a main menu and reproduction conditions are set in accordance with the selected sub-menu items, wherein a cursor is displayed on the main menu. When you are
The display data of the submenu where the cursor is displayed is reproduced from the disc and stored in the memory. When one of the plurality of submenus is selected from the main menu, the submenu stored in the memory is read from the memory. A method of reproducing a disc in which menu display data is read, converted into a video signal, and the video signal is output.