JP2640451B2 - Auto loading disk player - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a so-called slot-in type autoloading disc player.

BACKGROUND ART A small digital audio disc having a diameter of about 12 cm, which is called a compact disc, has a lead-in area in which the number of songs recorded on the disc, the total absolute time, the playing time of each song, and the like are determined. Information is recorded, and when reproducing the disc, the recorded information in the lead-in area is always read. Then, the read information is stored in the memory, and is appropriately used for display on a disc display, program selection, and the like.

By the way, the disc player is equipped with a loading mechanism for automatically transferring the disc between a slot (disc insertion / ejection port) position of the housing and a reproduction position in the housing in order to save the trouble of loading the disc. There is something.

In such an auto-loading disc player, after ejecting (ejecting) a disc, a so-called reload command for re-importing the same disc without removing the disc from the slot position is issued, so that the same disc may be reproduced again. In such a case, conventionally, the contents stored in the memory were invalidated when the disk was ejected, so that it was necessary to read the stored information in the lead-in area again after loading by reloading was completed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and when loading is performed again from a state where an ejected disk is not removed, it is not necessary to perform an operation of reading recorded information in a lead-in area again. It is an object of the present invention to provide an auto-loading disc player.

An auto-loading disk player according to the present invention includes a storage unit for storing recording information in a lead-in area of a disk read by a pickup, and the storage contents of the storage unit when the ejected disk is removed from a slot position. Is invalidated.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic perspective view showing the appearance of a slot-in type in-vehicle autoloading 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 has a disc 3 to be reproduced.
Is provided to extend in the left-right direction in the figure. The disk 3 is, for example, a so-called compact disk on which audio information is recorded in a PCM (Pulse Code Modulation) format, and has an outer diameter of about 12 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 disc 3 inserted from the slot 4 is positioned at a predetermined position (hereinafter, referred to as a slot position) on the tray 6 by positioning means (not shown).
A part of the disc 3 is carried on the tray 6 in a state protruding outside the front panel 2. The tray 6 is loaded with a loading motor 7 as a driving source, and a disk 3 carried by a driving force transmission 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.
Is transported between the slot position and a reproducing position in the housing 1 to be described later.

In such a loading mechanism, the tray 6 carries the disk 3 set at the slot position and moves rightward from the solid line position in the figure, and the center hole of the disk 3 is fixed to the rotation shaft of the spindle motor 9. When it reaches the upper position, it descends directly below, and further descends after placing the disk 3 on the turntable 10 and stops at a position slightly separated from the disk surface as shown by a two-dot chain line in the figure. Loading (loading) of the disc 3 by the operation of
Perform the operation. The position where the disc 3 is placed on the turntable 10 is the above-described reproduction position. The unloading (ejection) operation of the disc 3 is performed by the loading motor 7.
Is performed along a path completely opposite to that of the loading operation described above. The loading mechanism described above was filed by the present applicant in Japanese Patent Application No.
Nos. 0145 to 200153 are filed, and the detailed description of the configuration and operation will not be described in detail 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 at the slot position, and the disk 3 is removed from the position. When turned off, it is turned off. The loading completion detection switch 12 is turned on by engaging with the tray 6 after the disc 3 is placed on the turntable 10, and detects that the loading operation has been completed. The ejection completion detection switch 13 is turned on by engaging with the tray 6 that has reached the forefront (front panel 2 side) position during the ejection operation by the loading mechanism, and detects that the ejection operation has been completed.

The disk 3 placed on the turntable 10 is driven to rotate by a spindle motor 9, and its 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 a control system shown in FIG. You.

FIG. 3 shows the configuration of a control system. The control system is a microcomputer including a CPU (central processing unit) 20 as a control center and a RAM (random access memory) 21 as a storage means. It has a configuration. CPU20
Are a spindle servo circuit 22 for controlling the rotation speed of the spindle motor 9 and a carriage servo for controlling the rotation speed of the carriage motor 15 based on signals generated from the operation key group 5 and the detection switches 11 to 13 and the like. For the circuit 23 and the motor drive circuit 30 for driving the loading motor 7, a control signal is generated at a timing described later, and display data is output to a display 24 for performing 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 in a signal processing circuit 25 and then supplied to the CPU 20, and is also supplied to a D / A (digital / analog) converter 26. The signal is converted into analog information, and is output as an audio signal 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 information reading spot with respect to the recording track of the disk 3 in the disk radial direction is provided.

The focus servo circuit 28 performs vector control for performing a focusing operation of the pickup 14 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. Based on a focus error signal generated by a known detection method such as a method, a drive of a focus actuator (not shown) incorporated in the pickup 14 is controlled.
Is sent to On the other hand, the tracking servo circuit 29
Supplies a drive signal to a tracking actuator (not shown) incorporated in the pickup 14 in response to a command issued from the CPU 20 at the time of a jump or the like, and a known detection method such as a three-beam method at the time of normal reproduction. By supplying the tracking error signal generated by the above, the position control of the information reading point in the disk radial direction is performed. 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 the present disc player is mounted on a vehicle, the CPU 20 is operated by a backup power supply, and each mechanism is configured to be operated by a main power supply supplied by turning on a so-called accessory switch (not shown) of the automobile. However, only the loading mechanism including the loading motor 7 and its drive circuit 30 among the respective mechanical units is provided with a backup power supply so that the disk 3 taken into the housing 1 can be ejected even when the main power supply is turned off. It is supposed to work. Further, an Acc detection circuit 31 for detecting the interruption of the main power is provided, and this Acc detection circuit 31 supplies the detection signal CPU20 when the main power is interrupted.

As shown in FIG. 4, each of the keys in the operation key group 5 includes a volume "UP" key 50 and a volume "DOWN" key 51 for giving commands to increase (UP) and decrease (DOWN) the volume, and left and right channels. A balance “L” key 52 and a balance “R” key 53 for obtaining a volume balance are included. The processing when these keys are operated is performed by the CPU 20 as software. That is, when the volume “UP” key 50 or the volume “DOWN” key 51 is operated, the CPU 20 sends data and a clock to the electronic volume circuit 27 to simultaneously increase or decrease the volume of both the left and right channels. When the balance "L" key 52 or the balance "R" key 53 is operated, the data and the clock are transmitted to increase the volume of one channel and decrease the volume of the other channel. The 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 the plurality of analog switches are operated according to data from the CPU 20. A known configuration that controls the volume by turning on and off can be used.

Volume "UP" key 50 and volume "DOWN" key
51 has a function of giving commands to increase and decrease the volume as described above, and a function of giving a command to lower the volume, for example, about 20 dB at a time when both keys 50 and 51 are operated twice. Is also carried.

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 disc 3 is inserted into the housing 1 from the slot 4 and set in the slot position on the tray 6 as shown in FIG. Then, the disk detection switch 11 is turned on. CPU2
When 0 detects that the disc 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 to activate the loading mechanism, and the loading operation is started (step 2). When the tray 6 carrying the disk 3 moves to the right from the position shown by the solid line in FIG. 2 and reaches above the turntable 10, it descends from that position directly below, so that the two-dot chain line in FIG. As shown, the disk 3 is placed on the turntable 10, and the loading operation is completed by the above series of operations. At this time, the loading completion detection switch 12 is turned on. When the CPU 20 detects the completion of the 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 recording information in the lead-in area of the disk 3 is started (step 5). After the display mode (step 6), the mode is shifted to the play mode (step 7). TOC read
The information is stored in the RAM 21. In the lead-in area of the disc, the so-called TOC (Table Of Cont), such as the curve recorded on the disc, the total absolute time, and the playing time for each song, etc.
ents) information is recorded.
Need to read TOC information. In the play mode, operations such as program selection, scanning, and search are performed in addition to normal sequential performance.

When the performance ends, the carriage (not shown) on which the pickup 14 is mounted reaches its movement limit position, and when a detection switch (not shown) is turned on, the CPU 20 detects that the performance has ended at this point (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 carries out the disc 3 from the reproduction position to the slot position by following the completely reverse process from the above-described loading operation, and the tray 6 reaches the forefront position shown by the solid line in FIG.
When the ejection 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 1).
0) Then, it is determined whether there is a reload command by a key input or the like in the operation key group 5 (step 11). If there is a reload command, the loading motor 7 is again transmitted to the loading motor 7 via the motor drive circuit 30. A loading command is issued to start a loading operation (step 12). Upon detecting the completion of the loading operation (step 13), the CP
U20 is the same disk performance as the previous one, and its TOC information is stored in the RAM 21 and is valid. Therefore, control is performed to immediately shift to the play mode (step 7) without reading the TOC information. I do.

After the ejection is completed, if it is determined in step 11 that there is no reload command, then 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 RAM 21
Invalidates the TOC information stored in (step 15),
Set the invalid flag. Thus, a series of operations of loading, playing, and ejecting are completed.

In the above-described series of operations, when the ejection operation of the disk 3 is completed, the TOC stored in the RAM 21 is
Since the information is not invalidated and is invalidated only when the disk 3 is removed from the slot position,
If you want to continue playing the ejected disc, use TO
There is no need to read the C information again, and it is possible to smoothly shift to the performance operation.

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

First, the CPU 20 issues a focusing operation start command to the focus servo circuit 28 (step 20), and at the same time, starts a timer for a predetermined time Ta built in the CPU 20 (step 21). Then, it is determined whether or not the focus servo has locked in (step 22). If the focus servo has locked in, the timer is cleared (step 23), and thereafter, the flow returns 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 lock-in has not been performed, it is determined whether a predetermined time Ta has elapsed (step 2).
4) If the time has elapsed, an ejection command is issued to the loading motor 7 via the motor drive circuit 30 in order to eject the disc loaded at the reproduction position (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 eject command, it is determined whether or not a reload command by a key input or the like in the operation key group 5 is present (step 2).
6) If there is no reload command, the ejection completion is detected (step 27), and the operation is stopped after that. 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.

In other words, the disc cannot be focused due to scratches or dirt on the disc, or the disc is inserted upside down, etc., and while the disc is being ejected, the disc reload command is not accepted and the transition from the eject operation to the loading operation is performed. It is forbidden. As a result, when the disc is inserted upside down, the user can immediately judge that, and when 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 display mode is started.
In FIG. 4, the display of predetermined information, for example, as shown in FIG.
When the reading of the TOC 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 reading is performed simultaneously (step 32). The displayed TOC information, that is, the number of songs and the total absolute time are displayed (step 33). In the flowchart of FIG. 6, for convenience of explanation, the display mode and the play mode are shown as different modes. However, after reading the TCO information in the display mode, the play operation is started.

Usually, at the time of so-called setup after reading the TOC information after the completion of loading of the disc 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 In some cases, it is not possible to determine what operation state the player is in. However, as described above, by displaying something even without the TOC information, it is possible to notify the user that the player is in the setup state. Note that the display information in this case is not limited to the blinking display of "---" using a seven-segment display.

If it is detected that another mode has been 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 (step 34), The timer is cleared (step 35), and at the same time, the performance (playback) status information, that is, the track number (track number), based on the read information of the pickup 14 which is playing back the program area, the elapsed time from the start of performance for each track ( Minute,
Seconds) 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. Also. When it is determined that there is no other mode designation and the display state has elapsed for a certain time Tb (step 37) in a state where the number of songs, the total absolute time, and the like are displayed (step 37), the process proceeds to step 36, and the above-described performance state Switch to information display.

That is, the read TOC information is displayed for a certain time Tb, and if another mode is specified before the elapse of the certain time Tb, the display is switched to the performance status information at that time, and the certain time Tb elapses. Then, the display automatically switches 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 a lock-in signal generated from the focus servo circuit 28 in a lock-in state of the servo loop in a predetermined cycle, and when it detects that the lock-in signal has disappeared, determines that the focus is out of focus. A focusing operation start command is issued to the circuit 28 (step 40), and at the same time, a timer for a predetermined time Tc built in the CPU 20 is started (step 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 43). ). When the focus servo is locked in, that is, when the focus is obtained, the timer is cleared (step 44), and 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), it is determined that the focus cannot be obtained by the current focusing operation (focus NG) at that time, and the NG built in the CPU 20 is not used.
The counter is incremented (step 46). Then, the count value N of this counter becomes a predetermined value, for example, “1”.
It is determined whether or not 6 "has been reached (step 47). If N ≠ 16, the process returns to step 40 to perform the focusing operation again, and repeats the focusing operation continuously up to 16 times until the focus is obtained.

If focus cannot be obtained even after repeating the focusing operation 16 times in succession, the NG counter is cleared (step 48), and then the stop state is set (step 4).
9). 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 in the operation key group 5 (step 50), the flow shifts to step 40 to start the focusing operation again.

Thus, by limiting the number of repetitions of the focusing operation continuously, the load on the servo system including the focus actuator and the like can be reduced, and the heat generation of the pickup 14 can be prevented.

If there is a disc eject command or a stop command during the focusing operation (step 42),
The process proceeds to step 48, where the NG counter is cleared, and then the state is set to the step state. 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 there is an eject command or a stop command 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, an 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, and detects the main power supply (Ac
When the disconnection of c) is detected (step 60), it is subsequently determined whether or not there is an eject command by a key input with the operation key group 5 (step 61). If there is an eject command, it is at the playback position. An ejection command is issued to the loading motor 7 via the motor drive circuit 30 to eject the disc (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 6).
4) After that, the operation is stopped. Step 6
If it is determined in step 3 that there is a reload command,
Ignore the key input for the command (step 65), and then proceed to step 64.

In other words, 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”,
"DOWN" key 50,51 and balance "L", "R" key 52,
A key processing method executed by CPU 20 when 53 is operated will be described.

First, in the case of the 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 pressed (so-called double press), it also has a function of giving a command to lower the volume at a time, for example, by about 20 dB. The key processing method will be described below with reference to the flowchart of FIG.

The CPU 20 constantly monitors whether or not any key in the operation key group 5 has been pressed in a predetermined cycle (step 20).
70), if any key is pressed, it is determined whether or not that key is the same key as in the previous cycle (step 71). If the key is different from the previous one,
The chattering counter built in the U20 is started (step 72), the double press timer built in the CPU 20 is cleared (step 73), and the double press check flag is turned off (step 74). The chattering counter is a counter for absorbing chattering at the time of key operation to prevent malfunction, the double press timer is a timer for monitoring the double press of the key, and the double press check flag is for the operated key. This flag indicates that the key is a double-press 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 on or not. Is determined (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 released. If it is determined that the key has been pressed, it is confirmed that the double-press check flag is ON (step 80), and then the key is made valid (step 8).
1).

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). If the time has expired, the key pressed at that time is validated. (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 double-pressed, the flow shifts to step 81 to make both keys valid and the double Accept the push.

That is, when the key for double pressing is pressed, the CPU 20 operates the double pressing timer, and during the timer operation period, one of the two keys for double pressing is pressed. When the key is released, the key is accepted by detecting that the key has been released, and when both keys are pressed together, it is accepted as a double press, and one of the two keys is pressed when the timer operation period elapses. If so, the key is accepted. Then, after accepting each key, data and a clock are sent to the electronic volume 27 (see FIG. 4) to execute the function of each key or the double press function.

Thus, by providing the double-press timer and detecting that one key is pressed and released during the operation of the timer, one key process can be performed even during the timer operation. Therefore, it is possible to quickly respond to key operations that are repeated quickly.

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

Next, a description will be given of a processing method in the case where the balance of the volume of the left and right channels is adjusted by the balance “L” and “R” keys 52 and 53 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 is pressed, and when the key is pressed, the key is the balance “L” or “R” key 52 or 53. It is determined whether or not (step 90). If any key is pressed, key identification data corresponding to that key is stored in a register built in CPU 20. If none of the balance "L" and "R" keys 52 and 53 is present, the register is reset (step 91), and the process waits for the next cycle.

In step 90, balance "L" or "R" key 52 or 53
If it is determined that is pressed, the key identification data stored in the previous register and the current key identification data are compared to determine whether the key is the same key as in the previous cycle. Is determined (step 92). With this determination, it can be determined whether or not the same key is continuously pressed. If the key is not pressed continuously, the key identification data in the register is rewritten (step 93), and then it is determined whether or not the key is the balance "L" key 52 (step 94). If it is the balance "L" key 52, the data and clock are sent to the electronic volume 27 (see FIG. 4) to increase the volume of the L channel and decrease the volume of the R channel (step 9).
5) 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 volume balance of the left and right channels has been achieved (center balance state) (step 97). If the balance has not been achieved, the process proceeds to step 94. The same operation as described above is performed. 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 acceptance of the continuous press at that point, so that the center balance state can be easily and reliably achieved. Can be obtained, and operation without looking at the display becomes possible. Therefore, the present invention is particularly useful for in-vehicle devices that are frequently operated without checking the display.

In the present embodiment, a case has been described in which the above-described volume balance processing method is applied to an electronic volume circuit in a disc player.However, the present invention is not limited to this, and may be applied to a normal tone control circuit, a fader control circuit, or the like. Is also applicable.

Effect of the Invention As described above, according to the autoloading disc player of the present invention, the recording information of the lead-in area of the disc once stored in the memory is not invalidated when the eject operation is completed, and the disc is not slotted. By invalidating the disc for the first time when it is removed from the position, it is not necessary to read the recorded information in the lead-in area again when playing the ejected disc continuously, so that it is possible to smoothly shift to the second performance operation. is there.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the appearance of an in-vehicle autoloading disc player according to the present invention, FIG. 2 is a schematic configuration diagram showing an internal structure thereof, FIG. 3 is a block diagram showing a circuit configuration of a control system, and FIG. FIG. 4 is a block diagram showing a partial concrete configuration of the circuit of FIG. 3, FIG. 5 is a diagram showing an example of a display method,
FIG. 6 to FIG. 12 are flowcharts showing each operation procedure executed by the CPU. Description of Signs of Main Parts 1 ... Housing, 3 ... Disc 4 ... Slot 5 ... Operation key group 7 ... Loading motor 9 ... Spindle motor 11 ... Disc detection switch 12 ... Loading completion detection switch 13 … Eject completion detection switch 14… Pickup 15… Carriage motor 27… Electronic volume circuit

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-195391 (JP, A) JP-A-61-250870 (JP, A)

Claims (1)

(57) [Claims] 1. A disc player provided with a loading mechanism for carrying a disc between a slot position of a housing and a turntable in the housing, wherein recording information is recorded from the disc carried on the turntable. A pickup for reading, and storage means for storing table of contents information of the disc read by the pickup, wherein the recording means, after the disc is carried out from the turntable to the slot position by the loading mechanism, An auto-loading disc player, wherein when a disc is removed from the slot position, the stored contents are invalidated.