JPH10172223A - Display method in disc player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to obtain a recording information in the adequate timing by reading information pieces or/and reproducing time when a disc is inserted to a player and conducting predetermined display on the display area during such read operation. SOLUTION: Read operation of table of contents(TOC) information is displayed on the display unit from the initial timing using the predetermined information by the flashing method using only one center segment, for example, of a display unit of 7-segments. When read operation is completed, a timer for a constant time built in the CPU 20 is started and the TOC information read simultaneously, namely the number of music and total absolute time, etc., are displayed. When it is detected that the other mode is designated with an input by the operation key group 5 under the condition that the number of musics and total absolute time are displayed, the timer is cleared and simultaneously the reproducing condition information, etc., is displayed based on the read information of the pickup 14 which is reproducing the program area. When the constant time has passed without designation of the other mode, playing condition information is then displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display method for a disc player.

[0002]

2. Description of the Related Art A diameter of about 12 called a compact disk
cm small digital audio disc, along with the main recording information such as songs, the number of songs of the main recording information recorded on the disc in the lead-in area, the total absolute time, the playing time for each song, etc. Information is recorded, and when reproducing the disc, the recorded information in the lead-in area is read. Then, a reproducing operation is performed based on the read information.

[0003]

SUMMARY OF THE INVENTION According to the present invention, information useful for grasping the recorded contents of a disc, such as the number of music pieces and reproduction time of main recorded information, and the operating state of a disc player are appropriately transmitted to a user. The purpose is to do.

[0004]

A display method in a disk player according to the present invention reads the number of information pieces and / or reproduction time when a disk is inserted into the player, and displays a predetermined number on a display unit during the reading operation. A first step of displaying and a second step of automatically displaying the number of information pieces and / or the reproduction time on the display unit for a predetermined time after reading of the number of information pieces and / or the reproduction time is completed. It is characterized by.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic perspective view showing the appearance of a slot-in type in-vehicle auto-loading disc player to which the present invention is applied, and FIG. 2 is a schematic configuration diagram showing the internal structure thereof. First, in FIG. 1, a front panel 2 constituting a part of a housing 1 is provided with a slot 4 for inserting a disk 3 to be reproduced, extending in the left-right direction in the figure. The disk 3 is, for example, a so-called compact disk in which audio information is converted into PCM (Pulse Code Modulation) and recorded, and has an outer diameter of about 12 mm.
cm. The front panel 2 is further provided with a plurality of operation keys for issuing various operation commands to the disc player, for example, commands such as play start and disc eject, and an operation key group 5 is configured by these keys. I have.

In FIG. 2, the disk 3 into which the slot 4 has been inserted is positioned at a predetermined position (hereinafter, referred to as a slot position) on the tray 6 by a positioning means (not shown), and a part of the disk 3 is located on the front panel. 2 is supported on the tray 6 in a state of protruding outside. The tray 6 is loaded with a loading motor 7 as a driving source, and a slot 3 for the disk 3 carried by the driving force transmitting mechanism 8 for transmitting the rotational driving force of the motor 7 to the tray 6 as a linear driving force in the horizontal and vertical directions in the drawing. A loading mechanism for transporting between the position and a reproducing position in the housing 1 to be described later is configured.

In this loading mechanism, the tray 6 carries the disc 3 set at the slot position and moves rightward from the solid line position in the drawing, and the center hole of the disc 3 is fixed to the rotating shaft of the spindle motor 9. When it reaches the turntable 10, it descends immediately below, and after further placing the disk 3 on the turntable 10, it further descends and stops at a position slightly separated from the disk surface as shown by the two-dot chain line in the figure. The loading operation of the disk 3 is performed by the above series of operations. Disk 3 is a turntable
The position placed on 10 is the reproduction position described above. The unloading (ejecting) operation of the disk 3 is performed by a reverse rotation of the loading motor 7 and following a completely opposite path to the above-described loading operation. The above-mentioned loading mechanism has been filed by the applicant of the present invention in Japanese Patent Application No. 59-200145 to No. 200153, and a detailed description of its configuration and operation will not be provided here.

Various detection switches are provided in the housing 1. First, a disk detection switch 11 for detecting that the disk 3 is at the slot position is provided. The disk detection switch 11 is turned on when the disk 3 is set to the throttle position, and the disk 3 is removed from the position. When turned off, it is turned off.
The loading completion detection switch 12 is connected to the turntable 10
By engaging with the tray 6 after the disc 3 is placed thereon, it is turned on, and it is detected that the loading operation has been completed. In addition, the ejection completion detection switch 13
Is turned on by engaging the tray 6 which has reached the forefront (front panel 2 side) position during the ejecting operation by the loading mechanism, and detects that the ejecting operation has been completed.

The disk 3 placed on the turntable 10 is driven to rotate by a spindle motor 9, and the recorded information is read by an optical pickup 14. The pickup 14 is mounted on a carriage (not shown) movably provided in the radial direction of the disk 3, and the carriage is driven by a carriage motor 15 via a gear mechanism 16. Signals emitted from the operation key group 5 disposed on the front panel 2 and the above-described detection switches 11 to 13 are transmitted to the control system shown in FIG. .

FIG. 3 shows the configuration of a control system. The control system includes a CPU (central processing unit) 20 as a control center, a RAM (random access memory) 21 as storage means, and the like. It has a microcomputer configuration. The CPU 20 controls the spindle motor 9 based on signals generated from the operation key group 5 and the detection switches 11 to 13 and the like.
A control signal is generated at a later-described timing with respect to a spindle servo circuit 22 for controlling the rotation speed of the carriage motor, a carriage servo circuit 23 for controlling the rotation speed of the carriage motor 15, a motor drive circuit 30 for driving the loading motor 7, and the like. In addition, display data is output to a display 24 that performs various displays.

The read information read from the disk 3 by the pickup 14 is subjected to signal processing such as demodulation and error correction by a signal processing circuit 25 and then supplied to a CPU 20 and D / A (digital / analog) converted. The data is converted into analog information by the electronic device 26 and output as audio signals of the left (L) and right (R) channels via the electronic volume circuit 27. A focus servo circuit 28 for controlling the position of the focal point of the information reading spot emitted from the pickup 14 and converged on the recording surface of the disk 3 in the vertical direction with respect to the recording surface; A tracking servo circuit 29 for controlling the position of the read spot in the disk radial direction is provided.

The focus servo circuit 28 controls the pickup 14 to perform a focusing operation in response to a command issued from the CPU 20 at the time of starting reproduction or when the focus is lost during the reproduction. A drive of a focus actuator (not shown) built in the pickup 14 is controlled based on a focus error signal generated by a known detection method such as an astigmatism method. Send to CPU20. On the other hand, the tracking servo circuit 29 sends a signal to a tracking actuator (not shown) built in the pickup 14 when jumping or the like.
A drive signal is supplied in response to a command issued from the CPU 20, and during normal reproduction, a tracking error signal generated by a known detection method such as a three-beam method is supplied to control the position of the information reading point in the disk radial direction. Do. The tracking error signal is also supplied to the carriage servo circuit 23, and its low-frequency component becomes a drive signal for the carriage motor 15 during normal reproduction.

Since this disc player is for use in a vehicle,
The CPU 20 is operated by a backup power supply, and each mechanism is configured to operate by a main power supply supplied by turning on a so-called accessory switch (not shown) of the vehicle. However, among the mechanisms, only the loading mechanism including the loading motor 7 and its drive circuit 30 operates on a backup power supply so that the disk 3 taken in the housing 1 can be ejected even when the main power supply is turned off. It is supposed to. Further, there is provided an Acc detection circuit 31 for detecting disconnection of the main power supply, and this Acc detection circuit 31 outputs a detection signal when the main power supply is disconnected.
Supply to CPU20.

As shown in FIG. 4, the keys in the operation key group 5 include a volume "UP" key 50 and a volume "DOWN" command for increasing (UP) and decreasing (DOWN) the volume.
A key 51 and a balance “L” key 52 and a balance “R” key 53 for balancing the volume of the left and right channels are included. The processing when these keys are operated is CPU2
0 is done in software. That is, the CPU 20 sends the volume “UP” key to the electronic volume circuit 27.
When 50 or volume "DOWN" key 51 is operated,
Data and clock are sent to increase or decrease the volume of both the left and right channels simultaneously, and the balance "L" key 52
Alternatively, when the balance "R" key 53 is operated, the data and the clock are sent to increase the volume of one channel and decrease the volume of the other channel. The detailed processing method will be described later. . The change state of the volume at this time is displayed on the display 24. The electronic volume circuit 27 includes, for example, a plurality of resistors connected in series to each other and a plurality of analog switches connected in parallel to each of the resistors, and these analog switches are operated in accordance with data from the CPU 20. A known configuration that controls the volume by turning on and off can be used.

Each of the volume "UP" key 50 and the volume "DOWN" key 51 has a function of issuing a command to increase or decrease the volume as described above.
When the is operated twice, it also has a function of issuing a command to lower the volume at a time, for example, about 20 dB.

Next, the operation procedure of the present auto loading disc player executed by the CPU 20 will be briefly described in accordance with the reproduction order with reference to the flowcharts of FIGS.

First, a series of operations of loading, playing and ejecting will be described with reference to the flowchart of FIG. 6. First, the disk 3 is inserted into the housing 1 from the slot 4 and set at the slot position on the tray 6 as shown in FIG. Then, the disk detection switch is turned on.
When the CPU 20 detects that the disk detection switch 11 is turned on (step 1), it issues a loading command to the loading motor 7 via the motor drive circuit 30. As a result, the loading motor 7 rotates, the loading mechanism starts, and the loading operation starts (step 2). The tray 6 carrying the disk 3 moves rightward from the position shown by the solid line in FIG. When the disk 3 reaches the position above the table 10, the disk 3 descends from that position, whereby the disk 3 is placed on the turntable 10 as shown by a two-dot chain line in FIG. I do. At this time, the loading completion detection switch 12 is turned on. When the CPU 20 detects the completion of loading by the ON output of the loading completion detection switch 12 (step 3), the CPU 20 shifts to a focus mode for taking the focus of the pickup 14 (focusing) (step 4). This focus mode will be described later.

When the focus is set in the focus mode, the reading operation of the pickup 14 is started. Before reading the program area, first, reading of the recorded information in the lead-in area of the disk 3 is started (step 5). Then, the display mode (step 6) is followed by a transition to the play mode (step 7). The read TOC information is stored in the RAM 21. In the lead-in area of the disc, there are so-called TOCs (Tables) such as the number of songs recorded on the disc, the total absolute time, and the playing time for each song.
Of Contents) Information is recorded, and it is necessary to read this TOC information at the start of performance. In the play mode, operations such as program selection, scanning, and search are performed in addition to normal sequential performance.

When the performance is completed and the carriage (not shown) on which the pickup 14 is mounted reaches its movement limit position and a detection switch (not shown) is turned on, the CPU 20 detects that the performance has been completed at this time. (Step 8) An ejection command is issued to the loading motor 7 via the motor drive circuit 30. As a result, the loading motor 7 rotates in the direction opposite to the direction of the loading operation and starts the ejection operation (step 9). In this ejecting operation, the tray 6 unloads the disc 3 from the reproduction position to the slot position by following the completely reverse process of the above-described loading operation, and the tray 6 reaches the forefront position shown by a solid line in FIG. When the operation is completed, the ejection completion detection switch 13 is turned on.

When the CPU 20 detects the completion of the ejection from the on output of the ejection completion detection switch 13 (step 10), the CPU 20 subsequently determines whether or not there is a reload command by a key input or the like in the operation key group 5 (step 1).
1) If there is a reload command, a loading command is again issued to the loading motor 7 via the motor drive circuit 30 to start the loading operation (step S1).
12). When the completion of the loading operation is detected (step
13), CPU 20 is playing the same disc as before,
Since the TOC information is stored in the RAM 21 and is valid, control is made to immediately shift to the play mode (step 7) without reading the TOC information.

After the ejection is completed, if it is determined in step 11 that there is no reload command, it is determined whether or not the disk 3 has been removed from the slot position (step 14). The removal of the disk 3 can be detected by the off output of the disk detection switch 11. When it is determined in step 14 that the disk 3 has been removed from the slot position, the TOC information stored in the RAM 21 is invalidated (step 15), and an invalid flag is set. Thus, a series of operations of loading, playing, and ejecting are completed.

In the above-described series of operations, the TOC information stored in the RAM 21 is not invalidated when the ejection operation of the disk 3 is completed, but is invalidated only when the disk 3 is removed from the slot position. Therefore, when playing the ejected disc continuously, there is no need to read the TOC information again, and the operation can be smoothly shifted to the performance operation.

Next, the focus mode (step 4) in FIG. 6 will be described with reference to the flowchart in FIG.

The CPU 20 first has a focus servo circuit 28
Issues a focusing operation start command to the
20) At the same time, a timer for a predetermined time Ta built into the CPU 20 is started (step 21). Then, it is determined whether or not the focus servo has locked in (step 22).
If locked in, clear the timer (step 2
3) After that, return to the main flow of FIG. The determination as to whether or not the focus servo has locked in can be made by using a lock-in signal generated from the focus servo circuit 28 when the focus servo locks in.

If it is determined in step 22 that the disk has not been locked in, it is determined whether or not a predetermined time Ta has elapsed (step 24). If it has elapsed, the disc loaded at the reproduction position is ejected. For this purpose, an ejection command is issued to the loading motor 7 via the motor drive circuit 30 (step 25). In other words, if the disc cannot be focused due to scratches or dirt on the disc, or the disc is inserted upside down, the disc is ejected after a certain time Ta has elapsed.

After the ejection command, it is determined whether or not there is a reload command by a key input or the like in the operation key group 5 (step 26). If there is no reload command, the ejection completion is detected (step 27). Thereafter, the operation is stopped. If it is determined in step 26 that there is a reload command, the key input for the command is ignored (step 28), and the process then proceeds to step 27.

That is, the disk cannot be focused due to scratches or dirt on the disk, or the disk is inserted upside down. During the ejection of the disk, the disk reload command is not accepted and the operation shifts from the eject operation to the loading operation. It is forbidden to do so. This allows
If the disc is inserted upside down, the user can immediately judge that, and if the disc has scratches or dirt, the playing of the disc can be prevented.

Next, the display mode (step 6) in FIG. 6 will be described with reference to the flowchart in FIG.

In the main flow of FIG. 6, reading of the TOC information is started (step 5), and then the main display mode is entered. Display of predetermined information on the display 24 from the start of the reading of the TOC information, for example, As shown in FIG. 5, blinking of "----" is performed using one segment at the center of the 7-segment display (step 30), and the TOC is executed.
When the reading of the information is completed (step 31), a timer for a fixed time Tb (for example, 5 seconds) built in the CPU 20 is started (step 32), and the TOC information read at the same time, that is, the number of songs and the total absolute time, etc. Display (Step 3
3). In the flowchart of FIG. 6, for convenience of explanation, the display mode and the play mode are shown as separate modes. However, after reading the TOC information in the display mode, the play operation is started.

Normally, the TOC after the loading of the disc is completed
At the time of so-called setup before reading the information and shifting to the play operation, the TOC information has not been read yet, there is no data that can be displayed on the display 24, and nothing can be displayed, so the user can enter any operation state. It may not be possible to determine whether there is. However,
As described above, by displaying something even without TOC information, the user can be notified that the player is in the setup state. In this case, the display information in this case is “−−−−” using a 7 segment display.
However, the present invention is not limited to the blinking display of "-".

When it is detected that another mode is designated by key input of the track ±, FF, REV or the like in the operation key group 5 while displaying the number of songs and the total absolute time, etc. 34) and clear the timer (step 3
5) Pickup 1 playing the program area at the same time
Based on the read information of 4, the performance (reproduction) status information, that is, the song number (track number), the elapsed time (minute, second) from the start of the performance for each song, etc. are displayed (step 36). These pieces of performance information are recorded on the Q channel of the subcode signal in the so-called CD format, and can be detected from the information read by the pickup 14. Further, when it is determined that there is no other mode designation and the display state has elapsed for the predetermined time Tb in the state where the number of songs, the total absolute time, and the like are displayed (step 37), the process proceeds to step 36, and Switches to the display of performance status information.

That is, the read TOC information is displayed for a certain period of time Tb, and if another mode is designated before the lapse of the certain period of time Tb, the display is switched to the display of the performance status information at that time, and the display is switched to the display of the certain period of time. When Tb elapses, the display is automatically switched to the display of the performance status information.

Next, the operation when the focus is lost during the play will be described with reference to the flowchart of FIG.

The CPU 20 constantly monitors the servo loop and the lock-in signal generated in the lock-in state from the focus servo circuit 28 in a predetermined cycle, and when the CPU 20 detects that the lock-in signal has disappeared, the CPU 20 determines that the focus has been lost. Issues a command to start the focusing operation to the focus servo circuit 28 (step 40), and at the same time, starts a timer for a fixed time Tc built in the CPU 20 (step 40).
41). Then, it is determined whether or not there has been a disc eject command or a stop command by a key input in the operation key group 24 (step 42). If not, it is determined whether or not the focus servo has locked in (step 4).
3). When the focus servo is locked in, that is, when the focus is obtained, the timer is cleared (step 44),
Thereafter, the operation shifts to the play operation again. If the lock-in signal of the focus servo is not obtained within a predetermined time Tc (step 45), the CPU 2 determines that the focusing operation could not be performed at this time (focus NG).
The NG counter built in 0 is incremented (step 46). Then, it is determined whether or not the count value N of this counter has reached a predetermined value, for example, "16" (step 4).
7) If N ≠ 16, return to step 40 and perform the focusing operation again until the focus is obtained.
The focusing operation is repeated 16 times in a row.

If the focus cannot be obtained even if the focusing operation is repeated 16 times in succession, the NG counter is cleared (step 48), and then the stop state is set (step 49). Here, the stop state refers to a state in which the main power supply is cut off and the operation of each mechanism is stopped when the disk is at the reproduction position. In this stop state, when it is detected that a play command has been issued by a key input on the operation key group 5 (step 50), the flow shifts to step 40 to start the focusing operation again.

As described above, by limiting the number of times the focusing operation is repeated, the load on the servo system including the focus actuator and the like can be reduced, and the pickup 14 can be prevented from generating heat. If a disc eject command or a stop command is issued during the focusing operation (step 4).
2) Go to step 48 to clear the NG counter and then stop. If there is a disc eject command, the operation shifts to a disc eject operation via a stop state. By clearing the NG counter when an eject command or a stop command is issued in this way, even when shifting from the stop state to the play state and performing the focusing operation again, focusing can be continued up to 16 times until the focus is obtained. The operation can be repeated.

Next, the operation when the accessory switch of the car is turned off during play as a special operation will be described with reference to the flowchart of FIG.

The CPU 20 constantly monitors the detection output of the Acc detection circuit 31 in a predetermined cycle. When the CPU 20 detects that the main power supply (Acc) is cut off by the detection output (step 60), the operation key group 5 It is determined whether or not there is an eject command by the key input of () (step 61). If there is an eject command, the loading motor 7 is sent to the loading motor 7 via the motor drive circuit 30 in order to eject the disc at the reproduction position. An ejection command is issued (step 62). After the ejection command, it is determined whether or not there is a reload command by a key input or the like in the operation key group 5 (step 63). If there is no reload command, the ejection completion is detected (step 64). It will be stopped. If it is determined in step 63 that there is a reload command, the key input for the command is ignored (step 6).
5) Then, proceed to step 64.

That is, while the disk is being ejected due to the interruption of the main power supply, the disk reload command is not accepted, and the transition from the eject operation to the loading operation is prohibited. As a result, a reduction in the battery voltage can be prevented without repeating the loading operation and the ejecting operation.

Next, in the operation key group 5, the volume “UP” and “DOWN” keys 50 and 51 and the balance “L”,
A key processing method executed by the CPU 20 when the "R" keys 52 and 53 are operated will be described. First, in the case of volume "UP" and "DOWN" keys 50 and 51, as described above, these keys respectively have the function of giving commands to increase and decrease the volume, and both keys are operated ( When the button is so-called double-pressed, it also has a function of giving a command to lower the volume at a time, for example, about 20 dB. The key processing method will be described below with reference to the flowchart of FIG.

The CPU 20 constantly monitors, in a predetermined cycle, whether or not any key has been pressed in the operation key group 5 (step 70).
It is determined whether the key is the same key as in the previous cycle (step 71). If the key is different from the previous key, start the charging counter built in the CPU 20 (step 72), clear the double press timer built in the CPU 20 (step 73), and check the double press The flag is turned off (step 74). In addition,
The chattering counter is a counter for absorbing chattering at the time of key operation to prevent malfunctions, the double press timer is a timer for monitoring double press of a key, and the double press check flag is a double key operated. This is a flag indicating that the key is a push key.

If it is determined in step 71 that the key is the same as the previous key, it is determined whether or not the chattering counter has counted over (step 75). If it has, the double check flag is turned on. It is determined whether or not (step 76). In the previous cycle, since the double press check flag is turned off in step 74, it is subsequently determined whether or not the pressed key is a double press key (step 77). If it is the key for use, a double-press timer is started (step 78), and a double-press check flag is turned on (step 79).

As described above, when one of the two double-press keys is pressed, the double-press timer is started. During the operation of the timer, no key is pressed in step 70, that is, the key is not pressed. If it is determined that the key has been released, it is confirmed that the double-press check flag is ON (step 80), and then the key is validated (step 81).

Similarly, during the operation period of the double-press timer, it is determined whether or not the timer has timed out through step 76 (step 82). Valid (step 81). If the time is not over, it is determined whether or not the key is double-pressed (step 83).
If the key is pressed twice, the process goes to step 81 to make both keys valid and accept the double press.

That is, the CPU 20 activates the double-press timer when the double-press key is pressed, and during the timer operation, one of the two double-press keys is pressed. When the key is released, the key is received by detecting that the key has been released, and when both keys are pressed together, the key is received as a double press. When the key is pressed, a process for accepting the key is performed.
Then, after accepting each key, the function of each key or 2
Electronic volume 27 to perform double press function (see Fig. 4)
To send data and clocks to.

As described above, the double press timer is provided, and after detecting that one key is pressed and released during the operation period of the timer, one key is pressed even during the timer operation period.
Since two key processes can be performed, it is possible to quickly respond to key operations that are repeated quickly.

In this embodiment, as the key processing method of the double-press key, the volume “UP”, “DOWN”
Although the case of the keys 50 and 51 has been described, the present invention is not limited to these keys. Applied equipment is not limited to the present disc player.

Subsequently, balance "L" and "R" keys 52, 5
The processing method for adjusting the volume balance between the left and right channels according to 3 will be described with reference to the flowchart of FIG.

The CPU 20 constantly monitors, in a predetermined cycle, whether or not any of the keys in the operation key group 5 has been pressed, and when the key has been pressed, the key is switched to the balance "L" or "R" key 52 or Judge whether it is 53 (step
90). If any key is pressed, key identification data corresponding to that key is stored in a register built in CPU 20. Balance "L", "R" key 52,53
If none of the above is satisfied, the register is reset (step 91), and after that, the process waits for the next cycle.

If it is determined in step 90 that the balance "L" or "R" key 52 or 53 has been pressed, the key identification data stored in the previous register and the current key identification data are compared. Determines whether the key is the same as that in the previous cycle (step
92). With this determination, it can be determined whether or not the same key is continuously pressed. If not, rewrite the key identification data in the register (step 9
3) Subsequently, it is determined whether or not the key is the balance "L" key 52 (step 94). In the case of the balance "L" key 52, the electronic volume 27 (FIG. 4) is used to increase the volume of the L channel and decrease the volume of the R channel.
(See step)
95) If the balance is the "R" key 53, the reverse control is performed (step 96).

If it is determined in step 92 that continuous pressing has been performed, it is determined whether or not the left and right channels have been balanced in volume (center balance state) (step 97). The process proceeds to perform the same operation as described above. When the balance is achieved, the reception of the continuous pressing is stopped at that point. The center balance state can be detected by comparing the left and right channel data transmitted to the electronic volume circuit 27 and confirming that the two data match.

As described above, when the balance key enters the center balance state while being continuously pressed, the so-called center click effect can be obtained by stopping the reception of the continuous press at that point, so that it is simple and reliable. A center balance state can be obtained, and operation without looking at the display is possible. Therefore, the present invention is particularly useful for in-vehicle devices that are frequently operated without checking the display.

In this embodiment, a case has been described in which the above-described volume balance processing method is applied to an electronic volume circuit in a disk player. However, the present invention is not limited to this, and ordinary tone control circuits and fader control circuits are used. It can be applied to circuits and the like.

[0054]

As described above, according to the display method of the present invention, when a disc is inserted into a player, the number of information pieces and / or the reproduction time are read, and a predetermined value is displayed on the display unit during the reading operation. Is displayed, the user can know that the player is operating, and, after reading is completed, automatically display the number of information pieces and / or the reproduction time on the display unit for a predetermined time, The user can easily grasp the information recorded on the disc at an appropriate timing. Thus, the convenience of the player is improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the appearance of a disc player.

FIG. 2 is a schematic configuration diagram showing the internal structure of the disc player.

FIG. 3 is a block diagram showing a circuit configuration of a control system.

FIG. 4 is a block diagram showing a specific configuration of a part of the circuit shown in FIG. 3;

FIG. 5 is a diagram showing an example of a display method.

FIG. 6 is a flowchart showing each operation procedure executed by the CPU.

FIG. 7 is a flowchart showing each operation procedure executed by the CPU.

FIG. 8 is a flowchart showing each operation procedure executed by the CPU.

FIG. 9 is a flowchart showing each operation procedure executed by the CPU.

FIG. 10 is a flowchart showing each operation procedure executed by the CPU.

FIG. 11 is a flowchart showing each operation procedure executed by the CPU.

FIG. 12 is a flowchart showing each operation procedure executed by the CPU.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Disk 4 Slot 5 Operation key group 7 Loading motor 9 Spindle motor 11 Disk detection switch 13 Eject completion detection switch 14 Pickup 15 Carriage motor 27 Electronic volume circuit

Claims (6)

[Claims] 1. A display method in a disc player for reproducing a disc on which the number of pieces of information indicating the number of main record information recorded together with main record information as main information and / or the reproduction time of the main record information is recorded. A first step of reading the number of information pieces and / or the reproduction time when a disc is inserted into the player, and performing a predetermined display on a display unit during the reading operation; And / or a second step of automatically displaying the number of information pieces and / or the reproduction time for a predetermined time on the display unit after reading of the reproduction time is completed. Method. 2. The display method according to claim 1, further comprising a third step of displaying, on the display unit, reproduction status information on the reproduction of the main information after the predetermined time. . 3. The disc player according to claim 2, further comprising a fourth step of immediately shifting to the display of the reproduction status information when another mode is designated within the predetermined time. Display method. 4. The display method according to claim 1, wherein the reproduction time is a total absolute time of the main recording information or a performance time of each music piece. 5. The display method according to claim 1, wherein the predetermined display is a blinking of a part of display elements provided on a display unit. 6. The display method according to claim 2, wherein the reproduction status information is a music number, a track number, or an elapsed time from the start of performance of each music.