JP3039061B2 - Disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a CD-I (C
D Interactive) and a disc reproducing apparatus applicable to the system.

[0002]

2. Description of the Related Art A CD (CD-DA) on which a digital audio signal is recorded is well known. Also CD
There has been proposed a CD-I system in which image data (natural images, animation, computer graphics, etc.), text data, program data, and the like are recorded in addition to audio data on a (compact disc), and the data can be operated interactively. Since such a CD-I system has a function of reproducing characters, images, sounds, computer data, and the like, AV consumer devices, mainly audio and video,
It can be used for electronic publishing centered on text, database services centered on information files, education and entertainment centered on dialogue response, etc., and is expected as a new form of media.

In the conventional CD-DA or CD-I, the disc type and address information corresponding to the program in the disc are recorded on the innermost lead-in track of the disc. This information is called TOC information.

Conventionally, each time a disc is mounted on a player, the TOC information of the disc is reproduced. TOC
The information is read by rotating the disk when the power is turned on. Since this TOC information was stored in the volatile memory, it is lost when the power is turned off.
When the power is turned on, the same as when a disc is mounted,
The TOC information was read from the disk again. This is done independently of replacing the disk.

[0005]

In order to read out the TOC information, it is necessary to rotate the disk, so that power consumption becomes a problem in a portable disk reproducing device driven by a battery. In addition, there is a problem that the rise time becomes long. Also, the loaded disc is a CD-DA and a CD-I
Can be detected from the TOC information.
You. If the disc is CD-I, the label information
Information on the disc, and read the label information on the disc.
Power consumption for powering is a problem.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a portable disk reproducing apparatus which is driven by a battery and has a function of TOC information , label,
An object of the present invention is to provide a disk reproducing apparatus capable of reducing power consumption for reading information .

[0007]

According to the present invention, image information and
Optical disc or audio disc with audio information
Play back an optical disc on which
Is displayed and audio is output.
In the disc reproducing apparatus operating a source, an optical disk
Disc playback means for driving and playing back the disc, and an optical disc
A signal processor for processing a reproduced signal reproduced from the disc reproducing means.
And the power on / off status of the device
Detecting means for detecting whether or not the optical disc has been replaced, and detecting the optical disc output from the disc reproducing means.
Storage means for storing control information and label information, and detection means
Is detected that the optical disc has not been replaced
Reads the control information from the storage means and reads
Optical information in which control information is recorded with image information and audio information
When it indicates that the disc is loaded
Reads the label information further from the storage means,
Optical disc based on control information read from the stage
The optical disc is replaced by the detection means.
Is detected by the disc playback means,
Driving a science disc and control obtained from signal processing means
The information is stored in the storage means and based on the control information to be stored.
Plays an optical disc, and the control information is
Optical disc with audio information recorded
Is obtained from the signal processing means.
Control means for further storing the label information in the storage means.
It is a disk reproducing device provided .

[0008]

When control information such as TOC information is read once, the control information is stored in the nonvolatile memory unless the disk is replaced. The validity / invalidity of the stored control information is determined based on information relating to disk replacement. Therefore, it is not necessary to rotate the disk to read the control information every time the power is turned on, and power consumption can be reduced.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. This embodiment is basically a CD-ROM.
Although it is an I-player, it can also play CD-DAs (CDs on which digital audio signals are recorded). In addition, CD
Has a function of displaying a clock and a calendar on the screen of the LCD display (hereinafter, referred to as a stationary function) when the is not reproduced. The terminals of the video and audio signals of this embodiment are I
N / OUT is switched so that a reproduced video signal and / or audio signal can be output, and a video signal and an audio signal from an external source can be reproduced by an LCD display and a built-in speaker. I have.

FIGS. 1 and 2 show the appearance of a CD-I player to which the present invention is applied, and FIG. 1 shows a CD-I player to which the present invention is applied as a whole.
The CD-I player 1 is integrated with an LCD display 19 so as to be portable, and is reduced in size and weight by using an integrated circuit or using chip components. The overall size of the CD-I player 1 is, for example, 140 mm in width, 170 mm in length, and 60 mm in height.

The player main body 2a of the CD-I player 1
A disk drive unit for driving a mounted disk (not shown) to rotate, a head drive unit for moving an optical head in a radial direction of the disk, and a signal processing unit for processing a reproduction signal from the optical head. Circuit board and the like.
Further, a computer including a 68000-series CPU is built in.

A power lamp 3, a power switch 4, and a CD-DA are provided on a front surface 2b of the player main body 2a.
A button unit 5 is provided. In the CD-DA button section 5,
AMS buttons 5a and 5 for automatically cueing songs
b, stop button 5c, and play / pause button 5
d is provided. Also, an open button 1
0 is provided. Further, a disc loading section 24 for ensuring loading of the disc, a chucking section 22 for fixing the loaded disc, and detection holes 2c and 2d for detecting that the inner lid 23 is closed are provided on the upper surface. .

An inner lid 23 is provided at the rear edge of the player main body 2a.
Are rotatably disposed. The inner lid 23 covers the upper surface of the player main body 2a. The trigger button 11a, the trigger button 1
1b and an XY device 12 are provided. When the XY device 12 presses portions deviated vertically and horizontally from the center thereof, the positions of the cursor displayed on the LCD display 19 in the X and Y directions can be designated. Further, the inner lid 23 has a detection projection 2 inserted into the detection holes 2c and 2d when it is closed.
3a and 23b are provided.

An outer cover 14 is rotatably disposed about the shaft support 13 so as to overlap the inner cover 23. The user can easily set the optimum opening and closing angle by turning the outer lid 14 up and down. The outer lid 14 can be held at an angle at which the LCD display 19 can be easily viewed, and at a position where the opening / closing operation of the inner lid 23 is not hindered when the disc is attached to or detached from the disc mounting section 24 of the player body 2. Note that discs of 8 cm and 12 cm can be used. Further, the outer lid 14 can be manually opened and closed, and can be opened up to an opening and closing angle of 90 degrees or more.

On one side of the player body 2a, a built-in speaker 6 for outputting a playback sound of the disc, an external remote control terminal 7, an in / out switch 8 for switching line in / out, a right channel An audio terminal 9a, a left channel audio terminal 9b, and a video terminal 9c are provided, respectively. An external pointing device such as a mouse or a joystick can be connected to the external remote control terminal 7 in addition to the remote control of the CD-I player 1.

A DBB (Dynamic Bass Boost) switch, a volume knob for adjusting the level of reproduced sound, and a headphone terminal for connecting headphones are provided on the other side of the player main body 2a. Further, on the rear side, a mounting surface for an external battery and a battery terminal are provided (not shown). Further, a storage unit for a backup lithium battery and a CL button (not shown) are provided on the bottom surface.

On the inner surface of the outer cover 14, an LCD display 19 having a size of, for example, 4 inches is provided. Outer lid 14
Is opened, the LCD display 19 is exposed and the LCD
The screen of the display 19 can be seen. Also,
An LCD drive switch 15 is provided near the LCD display 19. By operating the LCD drive switch 15, on / off of the LCD display 19 can be controlled. When playing back a CD-DA disc instead of a CD-I, only audio playback is performed, so there is no need to display on the LCD display 19.
Also, when only audio reproduction is performed on a CD-I / CD-DA disc, the display on the LCD display 19 is unnecessary. As described above, when there is no need to display a screen, the LCD drive switch 15 is used to save power consumption.
Thus, the LCD display 19 can be selectively turned off.

Further, on the side surface of the outer lid 14, a hue adjustment knob 16, a color adjustment knob 17, a brightness adjustment knob 18 and an open knob 22 are provided. L
A lock portion 21a is provided above the CD display 19, and a lock hole 21b fitted into the lock portion 21a is provided.
Is provided on the main body 2a, and the outer lid 1 is
The closed state of 4 is locked.

The CD-I contains audio data,
Since high-speed processing is required in real time, processing is performed in a machine language. The CPU for this purpose is 68000, a 16-bit CPU developed by Motorola.
The system is the standard. As the user interface,
Two trigger buttons 11a and 11b and an XY device 12 are provided, and an external pointing device can be connected. As the output, two systems of audio and video are prepared. The CD-I player can reproduce a music CD-DA.

The signal processing configuration of the CD-I player 1 to which the present invention is applied will be described below with reference to FIG. FIG. 3 is a block diagram of the CD-I player 1. In FIG. 3, a disk 31 is rotated at a CLV (constant linear velocity) by a spindle motor 32. The rotation of the spindle motor 32 is controlled by the spindle servo circuit 33 by the CD.
It is controlled based on the clock reproduced by the reproduction circuit 34. The output of the system controller 35 is supplied to the spindle servo circuit 33.

The recording signal of the disk 31 is
Will be played back. The optical head 36 is supported by a biaxial device. The output of the focus / tracking servo circuit 37 is supplied to this two-axis device. The system controller 35 is connected to the focus / tracking servo circuit 37. In the focus / tracking servo circuit 37, based on the output of the photo detector,
Servo is applied to the optical head 36 in two axes, a focus direction and a tracking direction.

The optical head 36 can be moved in the radial direction of the disk 31 by a slide feed mechanism 38 using, for example, a linear motor. The slide feed mechanism 38 is controlled by a thread servo circuit 39.
The thread servo circuit 39 includes the system controller 3
5 is connected. The slide feed mechanism 38 allows the optical head 36 to access a desired track position.

The output of the optical head 36 is supplied to the CD reproducing circuit 34 via the RF amplifier 40. The CD reproduction circuit 34 includes a bit clock reproduction circuit, an EFM demodulation circuit,
It comprises a CIRC error correction circuit and the like. In the CD reproducing circuit 34, the output of the optical head 36 is EFM-demodulated and subjected to error correction processing. The CD reproduction circuit 34 is controlled by the system controller 35.

The output of the CD reproducing circuit 34 is supplied to a CD-ROM reproducing circuit 41. CD-ROM playback circuit 41
Is composed of a sync detection circuit, a descrambling circuit, an error correction circuit, and the like. The sync is detected by the CD reproducing circuit 34 and the scramble is released. Then, the header address is checked, and the target block is accessed. The CD-ROM reproducing circuit 41 is controlled by the system controller 35. System controller 3
5 includes a CD-DA button unit 5 and a trigger button 11
Inputs are provided from a, 11b and XY device 12.

Reference numeral 44 denotes a CPU for controlling the CD-I system. As the CPU 44, a 68000 type CPU is used. A master controller 45 and an external pointing device, for example, a mouse 46 are connected to the CPU 44. An external pointing device can be connected to the system controller 35. The CPU 44 and the system controller 35
Are connected in both directions. 47 is a bus derived from the CPU 44. Although not shown, the output signal of the open / close detection switch (detection holes 2c, 2d, protrusions 23a, 23b) of the inner lid 23 is output to the CPU 44 or the
5 given. Note that the CPU 44 and the master controller 45 may be integrated into one chip.

The data reproduced by the CD-ROM reproducing circuit 41 is sent to a bus 47. The bus 47 has a RAM 49 via video controllers 48a and 48b, respectively.
a and 49b are connected. The bus 47 is connected to a system ROM 50, a nonvolatile RAM 51, and a nonvolatile RAM 51a for disk information. In addition, bus 4
7, an audio decoder 52 is connected. The system ROM 50 stores D-Shell (built-in software) and CD-RTOS (operating system). The nonvolatile RAM 51 is, for example, 8 k
It is of byte capacity. Part of the area of the non-volatile RAM 51 may be used instead of the RAM 51a. Further, the protrusions 23a and 23b of the inner lid 23 and the detection hole 2
A disk detection switch 51b is shown in FIG. 3 corresponding to the detection mechanism composed of c and 2d. As the disk detection switch 51b, a mechanism for optically detecting the presence or absence of a disk may be used. This detection switch 51b always operates regardless of the power on / off of the main body.
Driven.

The image data of the data reproduced by the CD-ROM reproducing circuit 41 is controlled under the control of the CPU 44.
It is supplied to video controllers 48a and 48b.
The video controllers 48a and 48b form video signals based on the image data. This video signal is supplied to the video synthesizer 53. The video signal from the video controller 48a and the video signal from the video controller 48b are synthesized by the video synthesizer 53. The output of the video synthesizer 53 is supplied to the LCD display 1 via the LCD drive circuit 54.
9. The driving of the LCD display 19 is L
It can be turned on / off by the CD drive button 15.

Audio data among the data reproduced by the CD-ROM reproducing circuit 41 is supplied to an audio decoder 52 under the control of the CPU 44. If the audio data is ADPCM, the audio decoder 52 decodes the ADPCM. The decoded audio data is supplied to the D / A converter 55 and is converted into an analog signal. The signal is output from an output terminal 58 via a low-pass filter 56 and an amplifier 57. The audio signal level output from the output terminal 58 can be set by a volume adjustment dial.

Next, a display example on the LCD display 19 will be described with reference to FIGS. FIG. 4 shows a control panel used for environment setting and file erasing. FIGS. 4A, 4B, and 4C show the first page and the second page.
Page, page 3. These pages are switched by clicking an icon at the bottom of the screen.

FIGS. 4A and 4B are panels for setting an environment. Time setting, initial screen,
Clock display, calendar display, CD-I auto start,
The icon corresponding to the item of the end of the environment setting is displayed. In the panel of FIG. 4B, icons respectively corresponding to the items of auto power off, set disk correspondence, key speed, test pattern, and demonstration are displayed in order from the top. Position the cursor on the desired icon,
A desired setting can be made by an operation of clicking. Test patterns and demos are more of an LC
These are icons for selecting items to be displayed on the D display 19.

FIG. 4C shows a panel used to selectively or collectively delete files when the file capacity of the nonvolatile RAM 51 increases. FIG. 4C
The total amount of data in the memory is displayed in the bar graph display section 61 at the top of the panel.

FIG. 5 is a display example of a menu screen. As shown in FIG. 5A, six icons are displayed at the top of the screen of the LCD display 19. These icons include a clock icon 62, a calendar icon 63, and a world clock icon 6 as shown in an enlarged manner in FIG. 5B.
4, menu icon 65, CD-DA icon 66,
And the CD-I icon 67. By selecting a desired icon with the XY device 12 or the mouse 46, it is possible to switch to the screen of the selected icon.

FIG. 6 is a display example when the clock icon 62 is selected. In the approximate center of the screen is an analog clock 68
However, a digital clock 69 is displayed below it. A date 70 and a day 71 are displayed on both sides of the digital clock 69, respectively.

FIG. 7 is a calendar display example when the calendar icon 63 is selected. FIG. 7A shows a screen when one week starts on Sunday. FIG. 7B shows a calendar in which the start of the week is Monday. In the control panel shown in FIG. 4A, the start of Sunday and the start of Monday can be selectively set by operating the trigger button 11a or 11b with the icon of the calendar display. For example, when using a calendar starting on Sunday in Japan and using a calendar starting on Monday in Europe and the like, switching can be performed with a single button.

FIG. 8 shows a display example when the world clock icon 64 is selected. In FIG. 8, a rectangular world map 72 is displayed substantially at the center of the screen. World map 72
An area setting function using a stripe pattern that moves horizontally by the XY device 12 is added.
After setting this area, the trigger button 11a,
By operating 11b, the date, current time and area name of the area are displayed. Note that a daylight saving time (DS TIME) setting function is provided for an area that adopts daylight saving time. The above-mentioned clock, world clock and calendar display are stationery functions,
During playback of I or CD-DA, it can be selected at any time.

FIG. 9 shows an example of a CD-I display when the disc loaded in the CD-I player 1 is a CD-I. A CD-I disc display section 73 is displayed on the left side of the screen, and a start icon 74 for starting reproduction of the disc is displayed on the right side. Further, below them, a label display section 75 for indicating the contents of the label of the CD-I disc is provided.

FIG. 10 shows an example of a CD-DA display when the disc loaded in the CD-I player 1 is a CD-DA. A CD-DA disc display section 76 is displayed on the left side of the screen, and a performance mode icon 77 for selecting a reproduction mode of the disc is displayed on the right side thereof.
Further below, a data display section 78 for displaying the track number of CD-DA and the playing time is provided. The loaded disc is a CD-I / CD-DA
Is determined by the TOC in the lead-in area of the disc.
The player identifies from the contents of (Table Of Contents).

The CD-I player 1 of this embodiment has built-in software (D-Shell) in the system ROM 50.
l). This built-in software is started immediately after the power is turned on, and performs various internal checks. Thereafter, the type of the inserted disc is determined. If the disc is a CD-I disc, a CD-I operation screen (FIG. 9) is displayed. If the disc is a CD-DA disc, a CD-DA operation screen is displayed. (FIG. 10) is displayed. In the case of a CD-DA disc, the player is under the control of the built-in software, and in this state, the stationery function can operate. On the other hand, when the CD-I disk is loaded, the built-in software passes control to the CPU 44.

Hereinafter, the operation of this embodiment will be described in more detail with reference to the flowchart of FIG. First, when the power switch 4 is turned on, the CS of the nonvolatile RAM 51
It is checked whether or not the D file is normal (step 81). The CSD file is a file in which information in the system ROM 50 is loaded by the operating system. This check is performed by opening the CSD file in the RAM. If it can be opened, the process proceeds to the next step 83, and if it cannot be opened, the control moves to step 82.

If it cannot be opened, the RAM 51
It is determined that the CSD file has not been copied normally. This occurs because a large or large file already exists in the RAM 51 and the capacity for copying the CSD file cannot be secured. Accordingly, in step 82, a file deletion screen (see FIG. 4C) is displayed to prompt the user to delete the file. The user erases the file,
When the capacity for copying the CSD file is secured, the internal reset is performed. After the reset, the state is the same as immediately after the power is turned on.

On the other hand, when the CSD file is opened, it is checked whether to set a clock and various user setting items (step 83). When setting the user setting items, use the control panel (FIGS. 4A and 4B).
Is displayed (step 84). The trigger buttons 11a and 11b and the XY device 12 are used to set items. "Exit" in the control panel
Selecting an item ends the key check.
Then, the control moves to a step 91, and a menu screen (see FIG. 5A) is displayed.

When the key check is unnecessary, the control moves from step 83 to step 85, a menu screen (FIG. 5A) is displayed, and a memory check (step 86) is performed. This check is set using the control panel, and determines whether the environment setting data stored in the RAM is correct. For example, the consistency between the fixed value written in the RAM and the checksum is used.
If the contents are correct, the control proceeds to step 87, where it is detected whether or not the inner lid 23 is closed (step 8).
7). Otherwise, control proceeds to step 88. When the backup battery is exhausted or detached, the contents of the RAM become incorrect. The RAM for storing the environment setting data may be either an area in the RAM 51 or a separate nonvolatile RAM.

In step 88, default values including date and time setting values are written as environment setting data in the RAM. Then, on the screen of the display 19, a message as to whether or not the user performs the setting is displayed (step 89). When the setting is not performed, that is, when the default value is sufficient, the process proceeds to step 87. On the other hand, when the user sets, the control panel is displayed (step 90), and the trigger button 1 is set.
The setting is performed by operating the 1a, 11b and the XY device 12. After the setting is completed, a menu screen is displayed by selecting an end item on the control panel (step 91).

Step 8 after steps 86 and 91
At 7, it is detected whether or not the inner lid 23 is closed. This detection is performed by the protrusions 23a and 23b provided on the inner lid 23.
And the detection holes 2c and 2d of the player body.
When the inner lid 23 is closed, CD-I and CD-D
Since there is a possibility that any one of the disks A is mounted, the control moves to step 92 for determining the presence or absence of the disk. On the other hand, when it is opened, it is determined that the disc is not loaded, so that a clock system screen (see FIGS. 6, 7, and 8) corresponding to the stationary function is displayed.
The control moves to.

If it is determined in step 92 that the disc is loaded, the control proceeds to step 93. If it is determined that the disc is not loaded,
The control moves to step 95, and a clock screen is displayed.

At step 93, a disk check is performed. That is, the TOC recorded on the innermost lead-in track of the disk is accessed, the type of the disk is detected from the data, and it is determined whether the disk can be handled. In some cases, the disc type is determined from the index 0 of the track 1. Generally, CD-I or CD-I, CD-DA or CD-DA, CD
-I / CD-DA or those treated as CD-I / CD-DA and others (CD-V or CD-XA
Etc.). CD-I player 1 of this embodiment
Can be reproduced as CD-I, CD-DA, CD-I / CD-DA, or those handled as such. If it is determined that the mounted disk can be handled, control transfers to step 94; otherwise, control transfers to step 96.

If it is determined that the disc cannot be handled by the player, such as a CD-V, a message panel indicating that reproduction is impossible is displayed (step 96).
It is detected whether or not a predetermined time has elapsed since the display was made (step 99), and after a predetermined time, the process proceeds to step 95 for displaying a clock system screen. This step 99 is performed by
May be a step of determining whether the file has been opened. That is, a loop may be made until the disk is removed.

As described above, the clock system screen (step 95) is of four types: clock, calendar, world clock, and menu. The user can select any screen by clicking the corresponding icon on the screen. Also, the screen displayed when the power is turned on is displayed in step 84 or 90.
Is set as the screen to be displayed first.

In the display of the reproduction system screen, a screen corresponding to the type of the disc detected in step 93 is displayed.
That is, in the case of a CD-I disc, the CD-I screen (FIG. 9)
However, when the disc is a CD-DA disc, a CD-DA screen (see FIG. 10) is displayed. CD-I
For a disc treated as a / CD-DA disc, a CD-I screen is prepared. However, at this time the CD
A -DA screen is also prepared, and switching from the CD-I screen to the CD-DA screen is enabled. Further, even when the CD-DA screen is displayed and after the reproduction of the CD-DA is started, an arbitrary screen of the clock system screen can be selected by the user's screen selection. The CD-I screen appears.
A similar selection can be made even before the reproduction of.

When the playback system screen is displayed,
Is opened (step 97), a clock system screen is displayed.
The screen displayed at this time is the last screen displayed in the clock system screen when the power is turned on. After the power is turned on, a direct reproduction screen is displayed. If there is no clock screen displayed last, a screen set as a screen to be displayed first on the control panel is displayed.

When the control moves to step 95 and the clock system screen is displayed, the screen display does not change even if the inner lid 23 is opened in step 98. When the inner lid 23 is closed, the disc may have been newly inserted.
Control returns to step 92 for checking the presence or absence of the disk.

In this embodiment, the inner lid 23 of the player 1 is
The mouse 46 can be connected as an external pointing device together with the XY device 12 provided in the computer. Cursors corresponding to these are displayed on the screen of the LCD display 19. Referring to an example of a clock screen, as shown in FIG. 12, a cursor 101 controlled to be moved by the XY device 12 and a cursor 102 controlled to be moved by the mouse 46 are displayed. These cursors 101 and 102 have different shapes so that the user can easily identify them.

When the cursor 102 presses the right key of the XY device 12, the cursor 101 moves rightward by a certain distance. When the left key of the XY device 12 is pressed, the cursor 101 moves leftward by a certain distance. By pressing the trigger buttons 11a and 11b, a click is made. The cursor 101 is restricted by the movements required for clicking icons on each screen and setting an area. On the other hand, the cursor 102 can move freely according to the moving direction and the moving amount of the mouse 46. A click is made by pressing the mouse trigger button.

If both the cursors 101 and 102 are always displayed, the user cannot know whether or not an external pointing device such as the mouse 46 is connected. Therefore, the cursor 102 is displayed only when the external pointing device is connected. Is done. For this control, a detection switch shown in FIG. 13 is used. This detection switch is a view substantially showing the configuration of the external remote control terminal 7.

In FIG. 13, the connector 132 of the external pointing device is inserted into the connector 131 on the main body side. The connector 132 has pins 13 for various signals.
3, and a pin is provided at a position of the main body side connector portion 131 corresponding to the pin 133. The main body side connector portion 131 is provided with a pin 134 that contacts one end of the spring portion 135. The other end of the spring portion 135 is connected to one end of the resistor R and a detection circuit (not shown). Resistance R
Is grounded. One end of the contact portion 136 is in contact with substantially the center of the spring portion 135, and the other end is connected to the voltage Vcc.

The connector section 132 is connected to the main body side connector section 13.
1 is not inserted into the spring portion 135
Is supplied to the detection circuit via the. On the other hand, the connector 13
When the connector 2 is inserted into the main body side connector 131, the pin 133 presses the pin 134. Therefore, the contact between the spring portion 135 and the contact portion 136 is opened, and the voltage supplied to the detection circuit decreases. Thereby, it is possible to detect that the terminal of the external pointing device is connected to the external remote control terminal 7. This detection signal is transmitted to the system controller 35 or the CPU in FIG.
44.

This embodiment will be further described with reference to FIG. FIG. 14 is a conceptual block diagram for explaining control of reading of TOC information performed by built-in software. By turning on the power (131),
The built-in software is activated, and the possibility of disk replacement is checked (132). The check related to disk replacement is monitored independently of turning on / off the main unit.
If there is a possibility of disc replacement, the disc is accessed via the system controller 35 to read the TOC information (133). The reproduced TOC information is stored in the nonvolatile RAM 51a (134).

Next, the nonvolatile RAM 51a is accessed (135), and the type of the disk is determined from the TOC information (136). At this time, the TOC information is stored in the nonvolatile RAM.
There is no need to rotate and access the disk because it is only read from 51a. Disc type is CD-
If it is DA, the screen is displayed from the TOC information, and the operation of starting the performance by the user is waited (137). After the user's operation, the disk access is started (138).

If the disc is a CD-I, label information in the disc is required. This label information is recorded at a predetermined track position after the TOC information. Therefore,
The possibility of disk replacement is checked (139),
If there is no possibility, the label information is taken out from the nonvolatile RAM 51a (142). If there is a possibility of replacement, the disk is accessed through the system controller 35 (140), and the read label information is stored in the nonvolatile RAM 51a (141).
Then, the operation waits for a user operation (143), and loading and starting of the CD-I application is performed by the user operation (144). In this case, the embedded software frees memory and relinquishes control for the CD-I disc application. However, a non-volatile R storing TOC information and label information
AM51a is not affected at all.

If the disk is replaced while the power is on, the system controller 35 sets the nonvolatile RAM 51a.
Clear When the disk is mounted again, the disk is immediately accessed, and the T
The OC information is saved, and the built-in software is notified that the disk has been replaced. The built-in software reads the TOC information and, if necessary, reads and saves the disk label.

If the disk is not replaced while the power is off, the system controller 35 is turned on after the power is turned on.
Informs the built-in software that there is a disk.
The built-in software accesses the nonvolatile RAM 51a and reads out the TOC information and, if necessary, the disk label. As a result, the disk can be started without accessing the disk at all.

[0062]

In the portable disk player, in order to reduce power consumption, except when accessing the disk,
It is necessary to stop the rotation of the disk. According to the present invention, the disk control information and the label information are stored in the non-volatile memory, so if the disk is not replaced,
No disk access is required, and power consumption can be reduced. In addition, since the disk is not accessed, the rising speed can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of one embodiment of the present invention.

FIG. 3 is a block diagram of a configuration of an embodiment of the present invention.

FIG. 4 is a schematic diagram of a control panel and an erasing screen according to one embodiment of the present invention.

FIG. 5 is a schematic diagram of a menu screen according to one embodiment of the present invention.

FIG. 6 is a schematic diagram of a clock screen according to one embodiment of the present invention.

FIG. 7 is a schematic diagram of a calendar screen according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of a world clock screen according to one embodiment of the present invention.

FIG. 9 is a schematic diagram of a CD-I screen according to an embodiment of the present invention.

FIG. 10 is a schematic diagram of a CD-DA screen according to one embodiment of the present invention.

FIG. 11 is an overall flowchart of a system according to an embodiment of the present invention.

FIG. 12 is a schematic diagram illustrating a cursor according to an embodiment of the present invention.

FIG. 13 is a schematic diagram of an example of an external pointing device insertion / removal detection device according to an embodiment of the present invention.

FIG. 14 is a conceptual block diagram for explaining control of reading TOC information according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Player 7 Connector for connection of external pointing device 12 XY device 19 LCD display 23 Inner lid covering CD mounting part 35 System controller 44 CPU 46 Mouse 50 System ROM 51, 51a Non-volatile RAM 51b Switch for detecting presence / absence of disk

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B ^7/ 00-7/013 G11B 19/00-19/18 G11B 27/10-27/34

Claims (1)

(57) [Claims] An image information and audio information are recorded.
Optical disc or optical disc with audio information
Play a disc, display images and output audio
Disk playback device that operates on battery power.
In location, disc playback hands to be played by driving the optical disc
And a reproduction signal reproduced from the optical disc reproducing means.
Signal processing means for processing, and the optical
Detecting means for detecting the presence or absence of replacement of the optical disk, and detecting the optical disk output from the disk reproducing means.
The storage means for storing the control information and the label information and the detection means detect that the optical disk has not been replaced.
When the control information is issued, the control information is read from the storage means.
The read out and read out control information is combined with image information and audio data.
Optical disc with audio information recorded
The label information from the storage means.
Information from the storage means.
The optical disk is reproduced based on the control information, and the detection means detects that the optical disk has been replaced.
If it is output,
Drive the disc and obtain the control obtained from the signal processing means.
Control information to be stored and stored in the storage means.
The optical disc is played based on the
An optical disc on which image information and audio information are recorded
If it indicates that it is attached,
The label information obtained from the processing means is further stored in the storage means.
A disk reproducing device comprising: a control unit for storing the information .