JP2002163879A - Information display device and information reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device and an information reproduc ing device which can quickly make users perceive the difference of management information recorded on the information recording medium and decrease the users operating load. SOLUTION: Management information is read out from track number information given to at least one track and the information recording medium recorded management information including group management information to control selective information regarding one or more tracks as one group. Whether or not the presence of group management information in management information is distinguished and group management information is displayed in the display means with a different display form depending on whether group management information is recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an information display and information reproducing apparatus capable of displaying management information recorded on an information recording medium.

[0002]

2. Description of the Related Art As information recording media on which music information and video information are recorded, linear information recording media represented by a cassette tape, a DAT (digital audio tape) 8 mm tape, an LD (laser disk), a CD, etc. Disc-shaped information recording media such as a (compact disc), an MD (mini disc), and a DVD (digital versatile disc) are known.

In recent years, it has become possible to write and rewrite information on a disk-shaped information recording medium, and this has the advantage of quick access to the recorded information.
It has achieved remarkable spread.

When recording music (hereinafter simply referred to as "music") on this disc-shaped information recording medium, for example,
One song is defined as a unit of “track”, and this track can be managed by adding track number information.
Such track number information includes a disc name, a song name, the number of songs, a playing time, a start position and an end position of a song on the disc (a start time and an end time when a position is managed by time information). Along with the information for managing the recorded data, the TOC (Table of Content)
t) is included in the management information called. Such management information is displayed, for example, on a display device of a recording / reproducing apparatus for a disc. Then, when reproducing the recorded music, the user can select the recorded music by designating the track number information displayed on the display or the music title.

[0005] Recently, the number of music pieces that can be recorded on one disk-shaped information recording medium can be remarkably increased by improving the information recording density on the disk-shaped information recording medium and establishing a new information compression method. Have been. For example, M
D, ATRAC (Adaptive TRansform Aco
Although an information compression method called "ustic coding" is adopted, recently, an MDLP standard for recording information by an information compression method called ATRAC3 having a compression efficiency twice or four times that of the conventional ATRAC has been established. This ATRAC
According to No. 3, the standard recording time of MD of 80 minutes enables recording in the quadruple mode for a maximum of 320 minutes. According to such a new information compression method, for example, the time of one song is about 5
Even if it is a minute, about 60 songs can be recorded on the disc.

[0006]

However, if a very large number of songs can be recorded as described above, it is very difficult for the user to select the song displayed on the display when playing the recorded song. It takes time and effort. Therefore, a method has been proposed in which a user can collect and group one or more songs and manage the songs for each group (hereinafter referred to as “group management”). In such group management, pieces of music belonging to the same group are given information such as the same group name, and the information such as the group name is
The information is recorded as group management information on the innermost periphery of the disk together with track number information and the like. Then, for example, when the disc is inserted into the disc recording / reproducing device, the group management information is read from the disc and displayed on the group selection screen of the display. When the user specifies a desired group on the group selection screen,
A screen for selecting songs belonging to the group is displayed. Therefore, the user can first specify a desired group, and then select a song that belongs to that group, so that the song can be selected efficiently.

However, when the number of songs to be recorded is small, there is no need to perform group management, and whether or not to perform group management is determined by the user's selection. Therefore, there is a disc on which the group management information is recorded and a disc on which the group management information is not recorded, and it may be necessary to quickly determine whether the disc is a group-managed disc. Further, for example, when a disc on which group management information is recorded is inserted into a disc recording / reproducing apparatus, a group selection screen on which no group management information is displayed may be displayed. In such a case, the user has to perform a useless operation of switching to another screen one by one.

[0008] The present invention has been made in view of the above points, and an object of the present invention is to enable a user to quickly perceive a difference in management information recorded on an information recording medium, and to perform a user operation. It is an object of the present invention to provide an information display and information reproducing device capable of reducing a load.

[0009]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention provides a method of recording a track, comprising: track number information assigned to at least one track; Information comprising: means for reading the management information from an information recording medium on which management information including group management information for managing tracks as one group is recorded; and display means for displaying the read management information. In the display device, determine whether the group management information is recorded on the information recording medium,
There is provided a display control means for displaying the group management information on the display means differently depending on whether the group management information is recorded or not.

According to the first aspect of the present invention, track number information assigned to at least one track and a group for managing one or a plurality of tracks as one group as selective recording information. The management information is read from the information recording medium on which the management information including the management information is recorded. Then, it is determined whether or not there is group management information in the management information, and the display mode is displayed differently depending on whether the group management information is recorded or not. Therefore, the user can quickly perceive the difference between the recorded management information, that is, whether or not the group management information is recorded on the information recording medium. Further, even on an information recording medium on which the group management information is not recorded, the management information is displayed in a display form corresponding thereto, so that the user does not need to perform useless operations, and therefore, the operation load of the user is reduced. Can be reduced.

According to a second aspect of the present invention, in the information display and information reproducing apparatus according to the first aspect, the display control means determines that the group management information is recorded on the information recording medium. Is group information recorded on the information recording medium (for example, group name information)
Are listed and displayed on the display means.

According to the second aspect of the present invention, when group management information is recorded, listed group information (for example, group name information) is displayed. You can make a selection.

According to a third aspect of the present invention, in the information display and information reproducing apparatus according to the first aspect, the display control means determines that the group management information is not recorded on the information recording medium. Is configured to immediately display the track number information recorded on the information recording medium on the display means.

According to the third aspect of the invention, when the group management information is not recorded, the track number information is immediately displayed on the display means, so that the user does not need to perform useless operations. Thus, the operation load on the user can be reduced.

[0015] According to a fourth aspect of the present invention, there is provided a system for managing track number information assigned to at least one track, and group management information for managing one or a plurality of tracks as one group as selective recording information. An information display and information reproducing apparatus provided with means for reading the management information from an information recording medium on which the management information is recorded, comprising: an operation means for giving a predetermined operation command to the information display and information reproducing apparatus; A function control unit that determines whether or not the group management information is recorded on the medium, and that makes the operation function form of the operation unit different depending on whether the group management information is recorded or not. , Is configured.

According to the fourth aspect of the present invention, track number information assigned to at least one track and a group for managing one or a plurality of tracks as one group as selective recording information. The management information is read from the information recording medium on which the management information including the management information is recorded. Then, it is determined whether or not there is group management information in the management information, and the operation function form of the operation means is changed depending on whether the group management information is recorded or not. Therefore, depending on whether the group management information is recorded or not, the operation function form of the operation means is automatically switched.
There is no need for the user to perform useless operations, and therefore, the operation load on the user can be reduced.

[0017]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description is an embodiment in which the information display and information reproducing apparatus of the present invention is applied to a magneto-optical disk recording and reproducing apparatus.

FIG. 1 shows a schematic configuration example of a magneto-optical disk recording / reproducing apparatus 100 according to an embodiment of the present invention. As shown in FIG. 1, this magneto-optical disk recording / reproducing apparatus 100
Includes an information recording / reproducing unit 50 and a system controller 51
, An input unit 52, and a display unit 53,
These components are connected as shown.

The information recording / reproducing unit 50 is provided on the magneto-optical disk 2
0, a laser diode (not shown) for emitting a laser beam, and various splitters and lights for splitting the emitted light from the laser diode and the reflected light from the magneto-optical disk 20 according to purposes. An optical pickup including a detector for converting reflected light from the magnetic disk 20 and light dispersed by various splitters into an electric signal, and an actuator for focusing a laser beam on the magneto-optical disk 20 and positioning the laser beam on an information track. 2, an RF amplifier 7 for generating various signals according to the purpose from various electric signals from the optical pickup 2, and a fluctuation of a group (groove) recorded in advance on the magneto-optical disk 20 by the RF amplifier 7 From the wobble signal from which the A to detect the 20 of the address information
When reproducing information recorded on the magneto-optical disk 20 with the DIP decoder 6, an RF (Radiation) that extracts a signal recorded on the magneto-optical disk 20 generated by the RF amplifier 7 is extracted.
o Frequency) signal data to EFM (Eight to
When performing information demodulation and recording information on the magneto-optical disk 20, a DRAM 1
EFM having the function of performing EFM modulation on data from 2
An encoder decoder 9; a magnetic head 3 for applying a magnetic field to a magnetic film of the magneto-optical disk 20 heated to a Curie temperature or higher by a laser beam when information is recorded on the magneto-optical disk 20; A head drive circuit 5 for determining and driving the direction of a magnetic field according to data subjected to EFM modulation by the EFM encoder / decoder 9 and an EFM encoder / decoder 9 for reproducing information from the magneto-optical disk 20 And a DRAM for storing data compressed by a data compression encoder / decoder 13 described later when information is recorded on the magneto-optical disk 20.
(Dynamic Random Access Memory) 12 and this DRA
DRA for controlling data input / output to / from M12
When reproducing information from the M control circuit 11 and the magneto-optical disk 20, the data from the DRAM 12 is expanded, and the expanded signal is output from the output unit 15.
When recording information on the magneto-optical disk 20, the input unit 14
A data compression encoder / decoder 13 for compressing a signal from the controller 12 and outputting it to the DRAM 12; a servo control circuit 8 for controlling a carriage motor (not shown) for driving the spindle motor and the optical pickup 2 in a radial direction and an actuator for the optical pickup 2; It has. A / D for converting an analog signal into a digital signal
Illustration of a D converter and a D / A converter for converting a digital signal into an analog signal is omitted.

The system controller 51 includes a CPU 51
a, a ROM 51b, a RAM 51c, and a VRAM 51d to control each component of the information recording / reproducing unit 50;
It records, reads, and reproduces information on the magneto-optical disk 20. Also, the CPU 51a of the system controller 51
Has a function as a display control unit and a function control unit, which are characteristic parts of the present invention, controls the display mode of the display unit 53 based on management information called TOC, and is provided in the input unit 52. It controls an operation function form of an operation button described later. Such TOC is recorded on the innermost circumference of the magneto-optical disk. The ROM 51b stores display control, function control processing programs, and the like.
M51c is mainly used as a work area. Also,
Display screen data displayed on the display unit 53 is stored in the VRAM 51d. The input unit 52 is provided for the system controller 1.
0 has a function as operating means for giving various operation commands from the user. The display unit 53 has a function as a display unit in the present invention, and mainly displays information in the TOC.

Next, the control of the display mode and the operation function mode of the display unit 53 performed based on the TOC will be described in detail. First, the logical structure of the TOC will be described with reference to FIG. The TOC according to the present embodiment includes management information such as a disc name, track number information assigned to one track, a song name, the number of songs, and playing time. The TOC includes group name information and other group management information. It is configured. The group management information is information generated to manage one or a plurality of tracks as one group. However, the group management information is selective recording information, and may or may not be included in the TOC. When the group management information is included in the TOC, the group (group name information) and the track number information are related by the group management information.
When assigning group name information to a track belonging to a certain group, a method of assigning information to which group the track belongs to each track and a method of assigning the group to the group There is a method of giving which track the track belongs to. In the case of the former method, the group management information is “TNO1 / G
group A, TNO2 / Group B, TNO3 / Gr
upA, TNO4 / GroupB, TNO5 / Gro
upC >>, and in the latter case, the group management information is “GroupA / TNO1 & TNO2 &
TNO3, GroupB / TNO4 & TNO5 >>. "TON1" and "GroupA"
Will be described in detail later. In addition, the track number information, the song name, and the group name information are recorded by the user as
And can be arbitrarily given from the input unit 52 in association with.

FIG. 2A is a diagram showing the relationship (logical structure) between the disc name, the track number information, and the track (song) in the TOC when the group management information is not included. . In FIG. 2A, “Disc” indicates a disc name. "TON1" indicates that the track number information is numbered "1" (TON2, 3,...).
Also indicate the track number information of each number). “A” indicates a track named “a” (here, a song named “a”) (b,
Also, c, d... indicate that the songs have the respective names). If special reproduction such as program reproduction or random reproduction is not specified, the music is reproduced in the order of the track number information (from the smaller number to the larger number) (in the case of FIG. 2B). The same).

On the other hand, FIG. 2B shows a disc name, group name information, track number information, and track (song) in the TOC when group management information is included.
FIG. 4 is a diagram showing a relationship (logical structure) with the above. FIG.
In (B), “Group A” indicates a group managed under the name “A” (Group B, C, D,...).
Indicates a group managed by each name). In the example of FIG. 2B, one Disc has Group A
And GroupB are registered, and furthermore, Group
A includes a song “a” to which TON1 has been assigned, a song “b” to which TON2 has been assigned, and a song “c” to which TON3 has been assigned, and Group B has a song “d” to which TON4 has been assigned. And the song “e” to which TON5 is assigned. As described above, when the group management information is included, the recorded music is group-managed.

Next, display control and function control processing by the CPU 51a when controlling the display mode and the operation function mode of the display section 53 will be described with reference to FIGS. FIG. 3 is a flowchart showing a display control and function control processing routine of the CPU 51a.

In the display control and function control processing shown in FIG. 3, first, when the magneto-optical disk 20 is inserted into the magneto-optical disk recording / reproducing apparatus 100, the CPU 51a
The TOC is read from the innermost periphery of the magneto-optical disk, and is read from the RAM.
It is stored in 51a (step S1). Next, the CPU 51
a determines whether or not there is group management information in the read TOC (step S2). If it is determined that there is no group management information, the CPU 51a
The display screen data is read out from the display unit 51d and displayed on the display unit 53, and the track number information is read out from the RAM 51a and displayed on the display screen (step S3).
Then, an operation function for no group management information is set for an operation button 70 of the input unit 52 described later (step S5). On the other hand, if it is determined that there is group management information, the CPU 51a reads out the display screen data from the VRAM 51d and displays it on the display unit 53, and reads out the group management information from the RAM 51a to make a list and display it on the display screen. (Step S4).
Then, an operation function for no group management information is set for an operation button 70 of the input unit 52 described later (step S6). In this manner, the CPU 51a displays the group 53 on the display unit 53 in different display modes depending on whether the group management information is recorded or not. Further, the CPU 51a has different functions set to the operation buttons 70 of the input unit 52 depending on whether the group management information is recorded or not.

FIG. 4 shows an example of the display screen displayed on the display unit 53 in this manner. Further, operation buttons 70 are described below the display unit 53. FIG. 4A shows the display screen 54 when no group management information is recorded. 1 (first song)
The track name information (AAAAA) corresponding to the track number information is immediately displayed. FIG.
In the column indicated by reference numeral 56 on the display screen 54 of (A), the track number information and the reproduction time of the music being reproduced are displayed. In this case, reproduction of the music (track) is performed by the input unit 5.
2 by inputting a reproduction start command from TNO. 1
Done from Also, the display screen 54 of FIG.
Random key 57, repeat key 58, scan key 5
7 is an input unit 5 arranged near the lower part of the display unit 53
It is displayed so as to be positioned at the second operation button 70, and when the operation button 70 corresponding to such a key is pressed, random reproduction of music, repeated reproduction of music, and the like are performed.

FIG. 4B shows a display screen 54 when group management information is recorded.
Reference numeral 60 denotes a list of group management information. On the display screen 54 of FIG. 4B, five group name information (“Group A”, “Group
upB "," NO NAME "," GroupC ",
“Group D”) is displayed, and a number indicating the reproduction order is displayed on the left of each group name information.

Here, "NO NA" indicated by reference numeral 60a is used.
“ME” is a group managed, but the group name information is not given by the user. Nothing is displayed in the reference numeral 60b, but this means that there is a track (song) not managed by the group. 4B, a function key 61 is displayed so as to be positioned on the operation button 70 of the input unit 52. The number of the function key 61 and the number in the list 60 are displayed. Corresponds to the number indicating the reproduction order. Then, by selecting the number of the function key 61 by pressing the operation button 70 of the input unit 52, a group to be reproduced first can be designated. The function key 62
This key is for displaying group management information which is not currently displayed on the list since the number indicating the reproduction order is “7” or later, on the list 60.

As described above, according to the present embodiment, the user can immediately perceive the presence / absence of group management information by changing the display mode and operation functions according to the presence / absence of group management information. Further, when the group management information is not recorded, it is possible to eliminate useless operations such as screen switching by the user.
The operation load on the user can be reduced. further,
When the group management information is recorded, the group management information is displayed in a selectable list.
Group selection can be made quickly.

In the above embodiment, the case where the information display device of the present invention is applied to a magneto-optical disk recording / reproducing device has been described.
Recording / reproducing device for information recording medium such as LD, or
The present invention can be applied to an integrated audio device that can use a plurality of these information recording media, an in-car audio device, and the like.

[0031]

As described above, according to the first aspect of the present invention, the display mode is differently displayed on the display means depending on whether the group management information is recorded or not. With this configuration, the user can quickly perceive the difference between the recorded management information, that is, whether or not the group management information is recorded on the information recording medium. Further, even on an information recording medium on which the group management information is not recorded, the management information is displayed in a display form corresponding thereto, so that the user does not need to perform useless operations, and therefore, the operation load of the user is reduced. Can be reduced.

According to the second aspect of the present invention, when group management information is recorded, a list of group information (for example, group name information) is configured to be displayed. , You can quickly make a group selection.

According to the third aspect of the invention, when the group management information is not recorded, the track number information is immediately displayed on the display means, so that the user needs to perform unnecessary operations. Therefore, the operation load on the user can be reduced.

According to the fourth aspect of the present invention, the configuration is such that the operation function form of the operation means is different between a case where the group management information is recorded and a case where the group management information is not recorded. It is not necessary to perform a simple operation, and therefore, the operation load on the user can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration example of a magneto-optical disk recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 shows a relation between a disk name, group name information, track number information, and a track (song) (logical structure).
FIG.

FIG. 3 is a flowchart showing a display control and function control processing routine;

FIG. 4 is a diagram illustrating an example of a display screen displayed on a display unit.

[Explanation of symbols]

 Reference Signs List 2 optical pickup 3 magnetic head 5 head drive circuit 6 ADIP decoder 7 RF amplifier 8 servo control circuit 9 EFM encoder decoder 11 DRAM control circuit 12 DRAM 13 data compression encoder decoder 20 magneto-optical disk 50 information recording / reproducing unit 51 system controller 51a CPU 51b ROM 51c RAM 51d VRAM 52 input unit 53 display unit 100 magneto-optical disk recording / reproducing device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuaki Yamanoi 25-1, Nishimachi, Yamada-ji, Kawagoe-shi, Saitama Prefecture Pioneer Co., Ltd. (72) Inventor Shinichiro Abe 25-1, Nishimachi, Yamada-shi, Kawagoe-shi, Saitama Pioneer Kawagoe Factory Co., Ltd. (72) Inventor Tomoyasu Yamada 25-1 Nishimachi, Yamada-shi, Kawagoe-shi, Saitama Prefecture Pioneer Corporation Kawagoe Factory F-term (reference) 5D077 AA30 HC03 HC05 HC17 5D110 AA19 DA03 DA11 DA17 DB03 DC03

Claims (4)

[Claims] 1. Management information including track number information assigned to at least one track and group management information for managing one or more tracks as one group as selective recording information is recorded. An information display and information reproducing apparatus comprising: means for reading the management information from the read information recording medium; and display means for displaying the read management information, wherein the group management information is recorded on the information recording medium. An information display characterized by comprising a display control means for differentiating the display mode between the case where the group management information is recorded and the case where the group management information is not recorded, and displaying the group management information on the display means. Information playback device. 2. When the display control means determines that the group management information is recorded on the information recording medium, the display control means makes a list of the group information recorded on the information recording medium to list the group information. 2. The information display and information reproduction device according to claim 1, wherein the information is displayed on a display. 3. The display control means, when determining that the group management information is not recorded on the information recording medium, immediately transmits the track number information recorded on the information recording medium to the display means. The information display and information reproducing apparatus according to claim 1, wherein the information is displayed. 4. Management information including track number information assigned to at least one track and group management information for managing one or more tracks as one group as selective recording information is recorded. An information display and information reproducing apparatus comprising means for reading out the management information from the information recording medium, wherein an operation means for giving a predetermined operation command to the information display and information reproducing apparatus; and wherein the group management information is stored in the information recording medium. Determining whether or not the group management information is recorded, and a function control unit that makes the operation function form of the operation unit different depending on whether the group management information is recorded or not. Information display and information reproduction device.