JPH0528623A - Disk player - Google Patents

Abstract

PURPOSE:To know the passing time of a posing condition by displaying the passing time of the posing condition by a displaying means. CONSTITUTION:While a CD-DA disk(compact disk used for normal music reproduction) is reproduced, the passing time of reproducing the music is displayed on an LCD display 13. That is, while the CD-DA disk is being reproduced, a disk attachement is displayed on the displaying area 45 of the display 13 and the passing time of reproducing the music is displayed on the passing time displaying area 46a of a displaying area 46. Also, when the posing condition is selected at the time of reproducing this CD-DA disk, the display of this passing time displaying area 46a is made with the passing time of posing and the posing condition is displayed on a posing display area 49 in an operation key displaying area 46b, as well.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player suitable for application to, for example, a CD-I player for reproducing a CD-I disc on which image information and the like are recorded in addition to audio information.

[0002]

2. Description of the Related Art In addition to audio data, image data (natural images, animation,
CD that records interactive data such as computer graphics), text data, program data, etc. and can be operated interactively
-I (CD Interactive) system is proposed. Since such a CD-I system has a reproducing function of characters, images, sounds, computer data, etc.,
It is expected to be a new type of media that can be used for audio / visual AV consumer equipment, electronic publishing centering on characters, database services centering on information files, education / entertainment centering on interactive responses, etc. Has been done. The CD-I system has various specifications in order to maintain compatibility and to be widely used for home use. That is, in the CD-I system, C
68000 series as PU (16 developed by Motorola
A real-time operating system for handling various files is based on the widely used OS9. Further, audio and image data are recorded on the disc as a file for each minimum unit processed (read, etc.) by the CD-I player at the time of reproduction, and these data are called a real time file. Then, two trigger buttons and an XY device are used as an input device, and two systems of audio and video are prepared as an output system. Further, the CD-I player is defined so that it can play a compact disc for ordinary music.

[0003]

By the way, in the above-mentioned CD-I player, for example, while reproducing a CD-DA disc, the reproduction elapsed time of the song and the elapsed time in the paused state when the song is in the paused state are shown. It would be convenient if I could know it. In view of the above point, the present invention has an object to know the elapsed time in the above-described paused state.

[0004]

DISCLOSURE OF THE INVENTION The disc player of the present invention is a disc player having a display means 13 for reproducing a disc 15 on which image information and the like are recorded in addition to audio information as shown in FIG. The time is displayed by the display means 13.

[0005]

According to the present invention, since the elapsed time in the paused state is displayed by the display means 13, it is convenient to know the elapsed time in the paused state.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the disc player of the present invention will be described below with reference to the drawings. In FIG. 2, 1
Reference numeral 5 denotes a disk, and this disk 15 is rotated by a spindle motor 21 at CLV (constant linear velocity). The rotation of the spindle motor 21 is controlled by the spindle servo circuit 22 based on the clock reproduced by the CD reproducing circuit 28. Further, the spindle servo circuit 22 is supplied with the output of the system controller 20.

The recording signal of the disk 15 is the optical head 23.
Will be played. The optical head 23 is supported by a biaxial device. The output of the focus / tracking servo circuit 25 is supplied to the biaxial device. The output of the system controller 20 is supplied to the focus / tracking servo circuit 25. In the focus / tracking servo circuit 25, servo is applied to the optical head 23 in two axes in the focus direction and the tracking direction based on the output of the photodetector.

The optical head 23 can be moved in the radial direction of the disk 15 by a slide feed mechanism 24 using, for example, a linear motor. The slide feeding mechanism 24 is controlled by a sled servo circuit 26.
The sled servo circuit 26 includes the system controller 2
An output of 0 is provided. The slide feeding mechanism 24 allows the optical head 23 to access a desired track position.

The output of the optical head 23 is supplied to a CD reproducing circuit 28 via an RF amplifier 27. The CD reproduction circuit 28 includes a bit clock reproduction circuit, an EFM demodulation circuit,
It is composed of a CIRC error correction circuit and the like. In the CD reproducing circuit 28, the output of the optical head 23 is EFM demodulated and subjected to error correction processing. The CD reproducing circuit 28 is controlled by the system controller 20.

The output of the CD reproducing circuit 28 is supplied to the CD-ROM reproducing circuit 29. CD-ROM reproduction circuit 29
Is composed of a sync detection circuit, a descramble circuit, an error correction circuit, and the like. The CD reproducing circuit 28 detects the sync and descrambles it. Then, the header address is checked and the target block is accessed. Then, in the case of form 1, error correction processing is further performed. The CD-ROM reproducing circuit 29 is controlled by the system controller 20.

An input is given to the system controller 20 from an input device 30. The input device 30 includes two trigger buttons 10A and 10B and an XY device 11. 31 is a CPU for controlling the CD-I system
Is. As the CPU 31, a 68000 series CPU is used. A master controller 32 is connected to the CPU 31. The CPU 31 and the system controller 20 are bidirectionally connected. A bus 33 is derived from the CPU 31. The CPU 31 and the master controller 32 may be integrated into one chip.

The data reproduced by the CD-ROM reproducing circuit 29 is sent to the bus 33. A RAM 35A is connected to the bus 33 via video controllers 34A and 34B, respectively.
And 35B are connected. A system ROM 36 and a backup non-volatile RAM 37 are bidirectionally connected to the bus 33. An audio decoder 38 is connected to the bus 33.

Image data of the data reproduced by the CD-ROM reproducing circuit 29 is controlled by the CPU 31.
It is supplied to the video controllers 34A and 34B. The video controller 34A and 34B form a video signal based on the image data. This video signal is supplied to the video synthesizer 39. The video synthesizer 39 synthesizes the video signal from the video controller 34A and the video signal from the video controller 34B. The output of this video synthesizer 39 is L
It is supplied to the LCD display 13 via the CD drive circuit 40. The LCD display 13 is driven by the LCD
It can be turned on / off by the drive switch 14.

The audio data of the data reproduced by the CD-ROM reproducing circuit 29 is supplied to the audio decoder 38 under the control of the CPU 31. When the audio data is ADPCM, the audio decoder 38 decodes the ADPCM. The decoded audio data is supplied to the D / A converter 41 and converted into an analog signal. Then, it is output from the headphone output terminal 3 via the low-pass filter 42 and the amplifier 43. The audio signal level output from the headphone output terminal 3 can be set by the volume adjusting dial 4.

Further, in this example, a timer 44 is provided,
The timer 44 can be controlled by the CPU 31, and the output signal of the timer 44 is supplied to the CPU 31 via the bus 33.

3 and 4 show the appearance of a CD-I player according to this example, and the CD-I player of this example has an LCD display 1 so that it can be easily carried outside.
3 is integrated, and the size and weight are reduced by the integrated circuit and the use of chip parts. This C
The overall size of the D-I player is, for example, 140 m in width.
m, length 170 mm, height 60 mm.

In the housing of the player main body 2 of the CD-I player, there are a disk drive unit for rotationally driving the mounted disk 15, a head drive unit for moving the optical head in the radial direction of the disk, and an optical head. A circuit board for signal processing of the reproduced signal is stored. Furthermore, 6800
It contains a computer consisting of a 0-system CPU.

On the front side surface 2a of the player main body 2, a headphone jack 3, a volume adjusting dial 4, a power-on / power-on /
An off switch 5 is provided. In addition, the player body 2
An open button 6 is provided at the front upper edge of the.

An inner lid 7 is rotatably arranged on the player body 2 of the CD-I player. Open button 6
When is pressed, the inner lid 7 is opened as shown in FIG. When the inner lid 7 is opened, the disc 15 can be loaded / unloaded. A window portion 8 is provided in the inner lid 7. A transparent member is provided in the window portion 8. Through this window 8
It is possible to confirm the rotating state of the mounted disk 15.

A trigger button 10A, a trigger button 10B, and an XY device 11 are arranged on the front edge of the inner lid 7. The XY device 11 is designed so that the positions in the X direction and the Y direction can be designated by pressing the portions deviated from the center thereof in the vertical and horizontal directions.

A pointing device such as a trackball, a mouse or a joystick can be used as the XY device 11. Inner lid 7
Further, the outer lid 12 is rotatably disposed on the above. This outer lid 12 can be opened by hand. This outer lid 12
Can be opened up to an opening / closing angle of 90 degrees or more and can be fixed at a predetermined opening / closing angle θ. This outer lid 1
On the rear surface 12A of the second LCD, for example, a 4-inch LCD
A display 13 is provided. When the outer lid 12 is opened, the LCD display 13 is exposed and the LC
The screen of the D display 13 becomes visible. Further, on the back surface 12A of the outer lid 12, the LCD drive switch 1
4 are provided. By operating the LCD drive switch 14, ON / OFF of the LCD display 13 can be controlled.

In this CD-I player, the disc 15
To play CD-I discs, CD-I / CD-DA discs (discs in which CD-I discs and CD-DA discs are mixed), and CD-DA discs (compact discs for normal music playback). You can Here, the CD-I data format will be described.

The CD-I records data in a form based on a CD-ROM. The recording unit of data is a block, like a CD-ROM. One block corresponds to 98 frames. The capacity of one block is 6
(Number of audio data) x 2 (2 stereo channels)
× 2 (byte unit conversion) × 98 (number of frames) = 235
It is 2 bytes. The recording capacity of the entire CD-I disc is
For a 12 cm diameter disc, this would be about 640 Mbytes.

There are two types of CD-I data structures, Form 1 and Form 2. This corresponds to the mode 1 and the mode 2 of the CD-ROM, respectively. In addition, CD-R
Mode 1 in the OM is a mode in which an error detection code and an error correction code are added to one block of data so that strong error correction can be performed. Also, CD-
Mode 2 in the ROM is designed to allow large user data without adding an error detection code and an error correction code.

In the CD-I, the form 1 and the form 2 can be designated for each block, and the form 1 and the form 2 can be mixed in one disc. C
The D-I format differs from the CD-ROM format in that a sub-header of 8 bytes is provided at the beginning of the user data. This subheader has an acoustic
Each block in which an image and data are recorded is time-division multiplexed in block units. Then, in order to process these in real time, necessary data is double-written and stored. This subheader consists of four items: file number, channel number, submode, and data type.

That is, FIG. 5A shows the structure of Form 1. Form 1 has a sync at the beginning (12 bytes)
Is provided, followed by a header (4 bytes), and further a subheader (8 bytes). After this, user data (2048 bytes) is provided,
Error detection code EDC (4 bytes), error correction P parity (172 bytes), Q parity (10 bytes)
4 bytes) is added. Form 1 has improved error correction capability, and this form 1 is suitable for handling data such as character data and program data in which an error cannot be interpolated.

FIG. 5B shows the structure of Form 2. In the form 2, a sync (12 bytes) is provided at the beginning, a header (4 bytes) is provided following this, and a subheader (8 bytes) is further provided. After this, user data (2324 bytes) and a reserve area (4 bytes) are provided. This form 2 is suitable for handling interpolable data such as audio data and video data. The subheader added to the beginning of the user data is a file number (2 bytes) and a channel number (2 bytes) as shown in FIG.
And a sub mode (2 bytes) and a data type (2 bytes).

The operation of this embodiment will be described below with reference to FIGS.
As will be described with reference to FIG. 9, FIGS. 1, 7, 8 and 9 show the operation when the LCD display 13 is turned on. In FIG.
Then, it is determined whether or not the internal clock is set (step 51).

When the calendar and the internal clock are set, the calendar and the internal clock are set using the XY device 11 and the trigger buttons 10A and 10B (step 52). Then, when the calendar and the internal clock are set, it is judged whether or not the disc is mounted (step 53).

When the calendar and the internal clock are not set in step 51, it proceeds to step 53 and it is judged whether or not the disk 15 is mounted. When the disk 15 is not mounted, the LCD display 13 displays a display when the disk is not mounted as shown in FIG. 8A (step 54). That is, when the disc is not mounted,
As shown in A, the display area 45 of the LCD display 13 shows that the disc is not mounted, and the display area 46 shows the calendar and time.

Then, the judgment as to whether or not the disc is mounted is continued (step 55). When it is detected in step 53 or step 55 that the disc is mounted, the TOC at the innermost circumference of the disc is accessed (step 56).

Then, from the TOC data, first, the CD
-I / CD-DA disc or CD-I disc or C
It is determined whether the disc is a D-DA disc (step 57). That is, in the CD-I disc or the CD-I / CD-DA disc, the PSEC at the time of (POINT = A0) is "1".
0 ", and for other discs, (POINT = A0)
At that time, PSEC is set to "00", so (POI
From PSEC when NT = AO), it is determined whether the disc is a CD-I disc, a CD-I / CD-DA disc, or a CD-DA disc.

When it is judged that the disc is a CD-DA disc, the display when the CD-DA disc is loaded is displayed on the LCD display 13 (step 5).
8). That is, when a CD-DA disc is loaded, a display indicating that the disc is loaded is displayed in the display area 45 of the LCD display 13 as shown in FIG. 8B, and PLAY, AM for operating the CD-DA is displayed in the display area 46.
Operation keys such as S and STOP are displayed.

When the operation keys displayed in the display area 46 are operated using the XY device 11 and the trigger buttons 10A and 10B, the CD-D is operated according to this operation.
The A disc is reproduced (step 59). When it is determined in step 57 that the disc is not a CD-DA disc, it is determined whether it is a CD-I disc or a CD-I / CD-DA disc (step 60). In other words, CD
The control field of (POINT = A0, A1, A2) of the -I disc is (01x0), and the CD-I
Since the control field of (POINT = A0) of the / CD-DA disc is always (01 × 0) and the other control fields are (00 × 0),
From the control field CD-I disc or CD-
It is determined whether the disc is an I / CD-DA disc.

When it is determined that the loaded disc is a CD-I disc, the LCD display 13 displays the CD-I disc loaded (step 61). That is, when the CD-I disc is loaded, a display indicating that the disc is loaded is displayed in the display area 45 of the LCD display 13 as shown in FIG. 9A, and the title of application software or the like is displayed in the display area 47.

Then, the XY device 11 and the trigger button 1 according to the instruction of the application software.
When the operation is performed using 0A and 10B, the reproduction of the CD-I disc is performed according to this operation (step 62). When it is determined that the loaded disc is a CD-I / CD-DA disc, the LCD display 1 indicates when the CD-I / CD-DA disc is loaded.
3 (step 64). That is, CD-I /
When a CD-DA disc is loaded, a display indicating that the disc is loaded is displayed in the display area 45 of the LCD display 13 and the CD-D is loaded in the display area 46 as shown in FIG. 9B.
Operation keys such as PLAY, AMS, and STOP for operating A are displayed, and the title of application software and the like are displayed in the display area 47.

Then, in the case of a CD-I / CD-DA disc, it is judged whether or not only the CD-DA is reproduced (step 65). When the operation keys displayed in the display area 46 are operated by using the XY device 11 and the trigger buttons 10A and 10B, the CD-
Only the DA area is reproduced (step 6).
6). X according to application software instructions
-Y device 11 and trigger buttons 10A and 10B
CD-I / CD according to this operation
-DA playback is performed (step 67).

Thus, in this example, the CD-I / CD
In the case of a DA disc, only the CD-DA area can be reproduced. This allows you to enjoy only the sound of the application software.

In this example, during reproduction of the CD-DA disc, the LCD display 1 displays the reproduction elapsed time of the song.
Display in 3. That is, during reproduction of the CD-DA disc, as shown in FIG. 1A, a display indicating that the disc is mounted is displayed in the display area 45 of the LCD display 13, and the display area 4 is displayed.
In the elapsed time display area 46a of 6, the playback elapsed time of the song is displayed and the operation key display area 46 of the display area 46 is displayed.
In the PLAY key display area 48 in b, the fact that the reproduction is being performed is displayed (for example, a different color, for example, red is displayed compared to the display of other operation keys).

When the CD-DA disc is in the pause state during reproduction, the elapsed time display area 46a displays the elapsed time of the pause and the pause key display area 49 in the operation key display area 46b indicates the pause state. A certain thing is displayed (for example, another color, for example, red is displayed compared to the display of other operation keys). Note that the present invention is not limited to the above-described embodiments, and needless to say, various other configurations can be adopted without departing from the gist of the present invention.

[0041]

According to the present invention, since the elapsed time in the paused state is displayed by the display means 13, it is convenient to know the elapsed time in the paused state.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of a disc player of the present invention.

FIG. 2 is a block diagram showing an embodiment of a disc player of the present invention.

FIG. 3 is an external view of an example of the disc player of the present invention.

FIG. 4 is an external view of an example of the disc player of the present invention.

FIG. 5 is a diagram for explaining the present invention.

FIG. 6 is a diagram for explaining the present invention.

FIG. 7 is a diagram for explaining the present invention.

FIG. 8 is a diagram for explaining the present invention.

FIG. 9 is a diagram for explaining the present invention.

[Explanation of symbols]

 13 LCD Display 15 Disk 20 System Controller 23 Optical Pickup 28 CD Playback Circuit 31 CPU

Claims (1)

Claim: What is claimed is: 1. In a disc player having a display means for reproducing a disc on which image information and the like are recorded in addition to audio information, the elapsed time of a pause state is displayed by the display means. A disc player characterized in that