JPH0512785A - Disk player - Google Patents

Abstract

PURPOSE:To automatically adjust reproduced information each time a disk is loaded by relating adjustment data and disk identification data to each other and storing them in a RAM by a control part and comparing the identification data with newly obtained identification data. CONSTITUTION:When an automatic mode switch 21 for reproduction output is operated, the control part 10 which receives an operation input signal from a switch 22 relates the adjustment data Dx from an information processing part 8 and the disk identification data Di obtained from a decoder 7 and stores them in the RAM 12. When the switch 22 is operated for the same disk 1, the system control part 10 relates data Dx obtained from the processing part 8 to the data Di and stores them in the RAM 12 to rewrite the data Dx. When the disk 1 is newly loaded in automatic adjustment mode for reproduction output, the control part 10 compares the newly obtained data Dx with the data Di in the RAM 12 and reads the data Dx out of the RAM 12 when the equality occurrs, and the processing part 8 performs level adjusting operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player used for reproducing recorded program information from a disc as an information recording medium used for recording program information such as digital audio signals.

[0002]

2. Description of the Related Art A compact disc (hereinafter referred to as a CD) is used, in which an audio signal is digitized and recorded as program information on a rotatable disc-shaped recording medium to form a spiral recording track. A CD system in which a CD is loaded into a disc player to obtain reproduction program information, that is, a reproduction audio signal, has been proposed as an audio signal reproduction system capable of obtaining a high quality output audio signal.

In such a CD, normally, the innermost peripheral side of the spiral recording track is the reproduction start end and the outermost peripheral side is the reproduction end, and therefore, in the normal reproduction state, the center of the disc. Reproduction is performed from the part side to the outer peripheral part side. Then, the recorded program information is, for example, in the form of an aggregate of a plurality of segmented program information, each of which corresponds to each piece of music, and is usually regarded as accompanied by address data. There is. Such address data is, for example, track number data showing the recording arrangement order from the reproduction start end side of each section program information, index number data showing the order of subsections in one section program information, and
Relative time data representing the reproduction time from the beginning of one piece of program information, and absolute time data representing the position on the spiral recording track from the reproduction start end are included.

In the innermost peripheral portion of the spiral recording track, the required time is recorded under the normal reproduction state from the reproduction start end to the beginning of each of the plurality of recorded divisional program information. The number of divided program information, the time required under the normal reproduction state from the reproduction start end to the end of the last one in the recording arrangement order of the plurality of recorded division program information, that is, the total reproduction time, etc. The data represented is recorded as "index table data" (hereinafter referred to as TOC data).

On the other hand, in the disc player for reproducing the program information recorded on the CD, the TOC data recorded on the spiral recording track of the mounted CD,
The address data and the program information are read by, for example, an optical head forming an information reading means.
Then, from the read signal obtained from the optical head, the reproduction T
The OC data, the reproduction address data, and the reproduction program information are separately obtained, and the reproduction TOC data and the reproduction address data are used for various controls related to the information reading from the CD by the optical head, and ,
The reproduction program information is supplied to the program information processing unit, where, for example, after digital / analog conversion (D / A conversion) into an analog signal, various adjustments such as level adjustment are performed, and the output audio information is output. It is sent as a signal.

In this way, when the output audio signal is obtained from the CD by the disc player, the recording level of the program information in the CD is generally uniform in each CD, but C
It is not unusual for a relatively large recording level difference to occur between the CDs supplied by different manufacturers, and the program information processing in the disc player is different. In the section, the reproduction program information is level-adjusted according to the recording level of the mounted CD so that the output audio signal sent from the disc player has an appropriate level. It That is, in the disc player, for example, the volume adjuster is operated for each mounted CD to set the level for the reproduction program information.

[0007]

In this way, the disc player is supposed to set the level of the reproduction program information each time the CD is mounted to reproduce the audio signal therefrom. For example, even when the same CD is repeatedly mounted in the disc player while the other CDs are mounted, the level setting for the reproduction program information in the disc player is set each time the CD is mounted. It needs to be done. In the conventional disc player, the user is required to operate, for example, the volume adjuster to set the level of the reproduction program information each time the CD is loaded. However, there is a problem that the user feels troublesome in such an operation.

In view of the above point, the present invention obtains reproduction program information from a disc on which TOC data is recorded in addition to the program information like a CD, and adjusts the reproduction program information according to the disc. Therefore, when the same disc is loaded to be used for repeatedly playing information, even if the loading state of another disc is intervened during the repetition, the playback once set for the disc It is an object of the present invention to provide a disc player in which an adjustment mode for program information can take an operation mode which is automatically reproduced every time the disc is loaded.

[0009]

In order to achieve the above object, a disc player according to the present invention has an information reading means for a disc on which TOC data is recorded in addition to program information and a reading from the information reading means. A signal reproducing section for reproducing TOC data and program information based on a signal, a program information processing section for adjusting reproduction program information obtained from the signal reproducing section and generating adjustment data corresponding to the adjustment, and a program information processing section. Data storage instructing means operated to instruct storage of adjustment data obtained from the memory means in the memory means, reproduced TOC data obtained from the signal reproducing section, adjustment data from the program information processing section, and data storage instructing means Is supplied with an operation input signal obtained by operating the Is constituted by a system control unit which controls operation depending, furthermore, the system control unit,
Under a specific operation mode, when an operation input signal from the data storage instruction means is received, the adjustment data from the program information processing section and at least a part of the reproduced TOC data are stored in the memory means in association with each other. In addition, when at least a part of the reproduced TOC data newly obtained from the signal reproduction unit matches at least a part of the TOC data stored in the memory means, the program information processing unit causes the reproduction program from the signal reproduction unit. The information is adjusted according to the adjustment data stored in the memory means in association with at least a part of the reproduced TOC data.

[0010]

In the disc player according to the present invention thus configured, when the disc is loaded and the program information is reproduced, the program information processing section
The reproduction program information obtained from the signal reproduction unit is set to perform adjustment such as level adjustment according to the mounted disc, and adjustment data corresponding to the adjustment is generated. When the data storage instructing means is operated under the reproduction output automatic adjustment mode as the specific operation mode, the system control section receives the operation input signal to obtain the data storage instructing section, and then the program information processing section obtains it. The adjustment data is taken into the memory means together with at least a part of the reproduced TOC data obtained from the signal reproducing section and in association with each other.

Incorporation of adjustment data into the memory means
It may be done multiple times on the same disc,
In such a case, at least a part of the reproduced TOC data is taken into the memory means only once at the first time, and from the second time, only the adjustment data is reproduced T that was previously taken in.
The adjusted data in the memory means is rewritten by being associated with at least a part of the OC data. Then, at least a part of the reproduced TOC data stored in the memory means is disc identification data considered to be unique to the disc.

Further, when the disc is newly mounted, the TOC newly obtained from the signal reproducing unit by the system control unit if the reproduction output automatic adjustment mode is set.
When at least a part of the data and at least a part of the TOC data already stored in the memory means are compared, and as a result, they are coincident with each other, the system control unit causes the memory means to which the result of the comparison is coincident. Stored T
The adjustment data stored in the memory means in association with at least a part of the OC data is read from the memory means, and the program information processing section reads the reproduction program information from the signal reproducing section from the memory means. The adjustment according to the adjustment data issued is automatically performed.

By doing so, when the same disc is repeatedly used for information reproduction,
Each time the disc is loaded, the identity is confirmed by the disc identification data consisting of at least a part of the reproduced TOC data, and then the adjustment mode of the reproduction program information in the program information processing unit which is already set for the disc is changed. It will be taken automatically. Therefore, the user of the disc player is not required to operate, for example, the volume adjuster in order to set the adjustment mode for the reproduction program information each time the disc is mounted, and the user feels troublesome. The number of operations will be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a main part of an example of a disc player according to the present invention, which is an optical player for reproducing information from a CD. Here, the disc 1 loaded in the disc player DP according to this example is
As described above, a plurality of segmented program information and address data, which are digitized audio signals, are recorded on the spiral recording track, and TOC data is recorded on the innermost peripheral portion of the spiral recording track. It is a recorded CD, and a predetermined rotation is given by the disk rotation motor 2. On this disc 1, for example, an array of a large number of pits is formed and recorded so that the program information, address data and TOC data can be read out optically. Read. The optical head 3 irradiates the disc 1 with a light beam such as a laser beam, receives a light beam which is modulated and reflected according to a recording track of the disc 1 by a photodetector, and generates a read signal S. Further, the optical head 3 has a built-in focus control means for keeping the light beam incident on the disc 1 in an appropriate focused state and a tracking control means for appropriately causing the light beam incident on the disc 1 to follow a recording track. And
Further, the whole of the disk can be moved in the radial direction of the disk 1, that is, in the direction traversing the recording track.

The read signal S obtained from the optical head 3 is supplied to the read signal processing section 4, and from the read signal processing section 4, T
A reproduction output signal Sp of OC data, program information, and address data, a focus error signal Sf, and a tracking error signal St are obtained. The focus error signal Sf is supplied to the focus control drive section 5, and based on this, the drive signal C ₁ is supplied from the focus control drive section 5 to the focus control means of the optical head 3 for focus / servo control. Further, the tracking error signal St is supplied to the reading position control section 6, and based on this, the driving signal C ₂ is supplied from the reading position control section 6 to the tracking control means of the optical head 3 to perform tracking / servo control.

Further, the reproduction output signal Sp obtained from the read signal processing unit 4 is supplied to the decoder 7, and from the decoder 7, a pair of reproduction program information P _L and P _R corresponding to the left and right components of the stereo audio signal, respectively. And the reproduction TOC data Toc and reproduction address
The data Q is detected. Then, the reproduced TOC data To
c and the reproduction address data Q are respectively supplied to the system control unit 10, and the reproduction program information P _L and P _R are supplied to the program information processing unit 8 to be subjected to various processes and adjustments. Left and right components A of the stereo audio signal which is the reproduction output signal from the processing unit 8.
_L and A _R are obtained and led to the output terminals 9L and 9R, respectively. The program information processing unit 8 generates adjustment data Dx corresponding to the adjustment to be performed on the reproduction program information P _L and P _R , and supplies it to the system control unit 10.
Further, under a predetermined condition, the system control unit 10
The adjustment control signal Cv is supplied from.

In this example, the program information processing section 8 has a specific configuration as shown in FIG. In the example of the program information processing unit 8 shown in FIG. 3, each of the reproduction program information P _L and P _R from the decoder 7 is converted into an analog signal in the D / A conversion unit 41, and then the level adjustment unit 42. Is supplied to. The level adjuster 42 has a volume adjuster 42a built therein, and the level of the reproduction program information converted into an analog signal from the D / A converter 41 is adjusted according to the volume adjuster 42a. Volume adjuster 42a
Is the disc player D according to this example.
As shown in FIG.
It is arranged on the front operation panel section 20 of the player DP,
The level adjustment degree with respect to the reproduction program information converted into the analog signal is manually set so as to correspond to the recording level of the divided program information on the disc 1.

The level adjuster 42 detects the setting state of the volume adjuster 42a and generates data corresponding to the level adjustment degree with respect to the reproduction program information converted into the analog signal by the volume adjuster 42a. An adjustment data generator 43 is additionally provided, and the data generated by the volume adjustment data generator 43 is sent to the system controller 10 as adjustment data Dx. Further, the level control section 42 is supplied with an adjustment control signal Cv from the system control section 10,
When the adjustment control signal Cv is supplied to the level adjusting unit 42, the volume adjuster 4 built in the level adjusting unit 42.
2a is controlled so as to have a level adjustment degree corresponding to the content of the adjustment control signal Cv with respect to the reproduction program information converted into an analog signal.

Each of the reproduction program information converted into an analog signal, the level of which has been adjusted by the level adjusting unit 42, is taken out as left and right components A _L and A _R of the stereo audio signal through the filter 44, and output terminals 9L and 9R.

In this way, each of the left and right components A _L and A _R of the stereo audio signal obtained from the filter 44 has an appropriate level.

The system controller 10 includes a non-volatile RA
An M (random access memory) 12 is connected, and the adjustment data Dx supplied from the program information processing unit 8 to the system control unit 10 is stored in the RAM 12 at a predetermined timing. In addition, the system control unit 1
Reproduction output automatic adjustment mode switch 2 related to 0
1, filing switch 22, play switch 23
And a stop switch 24 are provided. The reproduction output automatic adjustment mode switch 21 is used to automatically adjust the reproduction program information in the program information processing unit 8 based on the adjustment control signal Cv from the system control unit 10. The filing switch 21 is for selecting the mode.
Adjustment data Dx obtained from the program information processing unit 8
Of the play switch 23 for instructing storage in the RAM 12 connected to the system control unit 10.
Is for starting the reproducing operation for the TOC data, the division program information and the address data recorded on the disc 1, and the stop switch 2
Reference numeral 4 is for canceling the reproduction operation state for the TOC data, the division program information and the address data.

Further, in connection with the system control unit 10,
A plurality of program information selection switches 25 for designating any of the plurality of section program information recorded on the disc 1 are arranged. The program information selection switch 25 is, for example, a direct number assigned with a number from 1 to 20 for designating a track number which represents a plurality of divided program information recorded on the disc 1 in the recording arrangement order. It consists of switches.

The reproduction output automatic adjustment mode switch 21, the filing switch 22, the play switch 23, the stop switch 24, and the plurality of program information selection switches 25 are, for example, push button type,
As shown in FIG. 2, it is arranged on the front operation panel section 20 of the disc player DP together with other operation buttons. When these switches 20 to 25 are operated, each operation input signal is supplied to the system controller 10.

In addition to the above-mentioned switches 20 to 25, the track number corresponding to each section program information recorded on the disk 1 is related to the system control unit 10.
An index number in each segment program information and an address / data display section 31 for displaying the remaining reproduction time of the segment program information being reproduced, and a track corresponding to the segment program information designated by the operation of the program information selection switch 25. In addition to displaying the numbers, in each operation mode, the track numbers corresponding to the reproduced segmented program information are sequentially erased, and the track numbers corresponding to the remaining segmented program information are displayed. Display surface section 3 having program display section 33
5 are provided. The address / data display section 31
The display drive unit 32 is connected to the system control unit 10, and the program display unit 33 is connected to the system control unit 10 via a display drive unit 34. And
As shown in FIG. 2, the display surface section 35 is also installed on the front operation panel section 20 of the disc player DP together with various operation buttons, and the display surface section installed on the front operation panel section 20 of the disc player DP. 35 in FIG.
Although not shown in the figure, a state display section 30 for displaying the operation state of the reproduction output automatic adjustment mode switch 21 is also included.

In the system controller 10 to which the reproduction TOC data Toc and the reproduction address data Q detected by the decoder 7 are supplied as described above, for example, the last track number is selected from the data included in the reproduction TOC data Toc. And a portion representing the total reproduction time is extracted as disc identification data Di, and the disc identification data Di is stored in the RAM 12 at a predetermined timing. Also, from the data included in the reproduction address data Q, reproduction track number data, reproduction index number data, reproduction relative time data, reproduction absolute time data, etc. are obtained. These reproduction data are stored in the address / data display section 31. The address is displayed according to the contents supplied to the. Then, the system controller 10 controls the optical head 3
A motor control signal Cs for controlling the reading position by the motor is supplied to the motor controller 11.

From the system controller 10 to the reading position controller 6
When the control signal Cc is supplied to the optical head 3, the reading position control section 6 sends a drive signal C ₃ in response to the control signal Cc in order to move the reading position of the optical head 3, and the optical head 3 outputs the radius of the disk 1 to the optical head 3. Forward or backward fast-moving operation for rapidly moving in the same direction, and a drive signal C ₂ is sent to the tracking control means built in the optical head 3 for forward or backward track jump operation. Then, the optical head 3 is operated in the search operation state. In addition, the system control unit 10 to the motor control unit 11
According to the motor control signal Cs supplied to the disk control motor 11 from the motor control unit 11 to the disk rotation motor 2, for example,
A drive signal C ₄ for rotating at a constant linear velocity is supplied.

In the disc player DP according to this example having the above-mentioned configuration, the disc 1 is loaded, and the plurality of segmented program information recorded on the disc 1 is reproduced. The volume adjuster 42a in the level adjusting unit 42 in the information processing unit 8 is manually operated, and the level adjusting degree with respect to the analog program reproduction program information supplied from the D / A converting unit 41 to the level adjusting unit 42 becomes Disk 1
In accordance with the recording level of the segmented program information in A, and thereby the left and right components A _L and A _{R of the} stereo audio signal obtained at the output terminals 9L and 9R, respectively.
Are set to have the proper levels.
Along with this, the volume adjustment data generation unit 43
However, the adjustment data Dx corresponding to the level adjustment degree for the reproduction program information of the volume adjuster 42a set as described above is generated.

By operating the reproduction output automatic adjustment mode switch 21, the reproduction output automatic adjustment mode described above is set. Under the reproduction output automatic adjustment mode, first, the program information processing unit 8
Volume adjuster 42a in the internal level adjusting unit 42
Based on the level adjustment degree according to the recording level of the divided program information on the disc 1 as described above, the adjustment data Dx obtained from the volume adjustment data generating unit 43 in the program information processing unit 8 is
The filing switch 22 is to be stored in the RAM 12.
Is operated. When the filing switch 22 is operated, the adjustment data Dx obtained from the volume adjustment data generation unit 43 at that time by the system control unit 10 receiving the operation input signal from the filing switch 22.
Are stored in the RAM 12 together with the disc identification data Di formed by a part of the reproduced TOC data Toc obtained from the decoder 7 and associated therewith.

After that, when the filing switch 22 is operated again for the same disk 1, the system control unit 10 which receives an operation input signal from the filing switch 22 causes the volume adjustment data generation unit 43 to obtain the data. The adjustment data Dx to be stored is the RAM1 first.
2 is stored in the RAM 12 in association with the disc identification data Di stored in 2, and the adjustment data Dx in the RAM 12 is rewritten.

In this way, the program information processing unit 8
The adjustment data Dx obtained from the volume adjustment data generating section 43 is stored in the RAM 12 and the optical head 3 reads the division program information from the disk 1 and outputs appropriate levels to the output terminals 9L and 9R. The left and right components A _L and A _{R of} the stereo audio signal, which are assumed to have the above-mentioned values, are derived respectively.

When the disc 1 is newly mounted under the reproduction output automatic adjustment mode,
The system control unit 10 compares the disc identification data Di newly obtained from the decoder 7 with each disc identification data Di already stored in the RAM 12. As a result, among the disc identification data Di stored in the RAM 12, the newly obtained disc identification data Di
If there is a match with the disk identification data Di stored in the RAM 12,
Of the adjustment data Dx stored in the RAM 12 in association with the result of the comparison, the adjustment control is read from the RAM 12 and corresponds to the content of the read adjustment data Dx. The signal Cv is formed and supplied from the system controller 10 to the level adjuster 42 in the program information processor 8.

Level adjusting unit 4 which receives the adjustment control signal Cv
In 2, the built-in volume adjuster 42a is
A state in which control is performed so as to have a level adjustment degree corresponding to the content of the adjustment control signal Cv, and the level adjustment is performed on the reproduction program information converted into an analog signal from the D / A conversion unit 41 with the level adjustment degree. Is automatically taken. Then, thereafter, the division program information is read from the disc 1 by the optical head 3, and the left and right components A _L and A _{R of} the stereo audio signal having appropriate levels are derived from the output terminals 9L and 9R, respectively. It

Therefore, in the case where the same disc 1 is repeatedly mounted, each time the disc 1 is mounted, the identity is confirmed by the disc identification data Di, and then the disc 1 is already set. Moreover, the level adjustment degree for the reproduction program information in the level adjustment unit 42 of the program information processing unit 8 is automatically reproduced.

The system control unit 10 for controlling the reproduction of the segmented program information recorded on the disc 1 is constituted by using, for example, a microcomputer, and the microcomputer outputs the reproduction output automatically. An example of the control operation program executed to perform the control under the adjustment mode will be described with reference to the flowchart shown in FIG.

In this program, after starting,
In the decision 51, it is determined whether or not the disc 1 is loaded in the disc player DP, and if it is not loaded, the determination in the decision 51 whether or not the disc 1 is loaded is repeated. Decision 51
If it is determined that the disc 1 is loaded in the disc player DP, the process proceeds to the process 52, the disc identification data Di which is a part of the reproduced TOC data Toc is fetched into the internal memory, and then the process proceeds to the process 53. ..

In the process 53, the RAM 12 is searched with the disc identification data Di fetched in the internal memory in the process 52, and the disc identification data Di and the RAM 12 fetched in the internal memory in the process 52 are searched.
Of the disc identification data Di captured in the RAM 12 is matched with the disc identification data Di captured in the RAM 12 at the decision 54. Judge whether something exists. If the decision 54 determines that none of the disc identification data Di captured in the RAM 12 matches the disc identification data Di captured in the internal memory in the process 52, the process proceeds to a decision 57.
On the other hand, when it is determined that the disc identification data Di captured in the RAM 12 matches the disc identification data Di captured in the internal memory in the process 52, the process proceeds to process 55.

In process 55, decision 5
RAM determined to match the disc identification data Di captured in the internal memory in process 52 according to the determination in step 4.
The adjustment data Dx stored in the RAM 12 in association with the disc identification data Di stored in
The data is read from the RAM 12 and loaded into the built-in memory, and then, in the process 56, the adjustment control signal Cv corresponding to the content of the adjustment data Dx read from the RAM 12 is formed and supplied to the level adjustment unit 42 in the program information processing unit 8. .. As a result, in the level adjuster 42, the built-in volume adjuster 42a is controlled so as to have a level adjustment degree corresponding to the content of the adjustment control signal Cv, and with the level adjustment degree,
The level of the reproduction program information converted into an analog signal from the D / A converter 41 is adjusted.

Subsequently, the process proceeds to the decision 57, and in the decision 57, the new adjustment data Dx, which is made by operating the filing switch 22, is stored in the RAM.
It is determined whether or not an operation to be stored in 12, that is, an operation for writing new adjustment data Dx is performed,
When it is determined that the operation for writing the new adjustment data Dx is performed, the operation for the writing is also performed at the decision 58 for the first writing for the currently mounted disc 1. Or not. Then, as a result of the judgment in the decision 58, the operation for writing the new adjustment data Dx, which is judged to have been performed in the decision 57, is the one for the first writing on the disc 1 mounted at that time. If so, in process 59, process 5
Disc identification data Di captured in the internal memory in 2
Is stored in the RAM 12, and subsequently, in the process 60, the new adjustment data Dx already stored in the internal memory is stored in the RAM 12 in association with the disc identification data Di stored in the process 59. Then, the process returns to the process 56, and the process 59 is performed.
New adjustment data D stored in the RAM 12 at
An adjustment control signal Cv corresponding to the contents of x is formed and supplied to the level adjustment section 42 in the program information processing section 8, and the decision 57 is again made.

On the other hand, as a result of the judgment at the decision 58,
If the operation for writing the new adjustment data Dx, which is determined to have been performed in the decision 57, is not for the first writing for the currently mounted disc 1, the process 59 is not performed. Proceeding to process 60, in process 60, the new adjustment data Dx already stored in the internal memory is stored in the RAM.
In 12, it is stored in association with the disc identification data Di already stored therein. Also in such a case, the process then returns to the process 56 to form the adjustment control signal Cv corresponding to the content of the new adjustment data Dx stored in the RAM 12 in the process 59, and the level adjustment unit 42 in the program information processing unit 8 is formed. And the decision 57 is made again.

Further, as a result of the judgment in the above-mentioned decision 57, if the operation for writing the new adjustment data Dx is not performed, it is decided in the decision 61 that the disc 1 is detached from the disc player DP. It is judged whether or not it is determined that the disc 1 has not been removed, and the process returns to the decision 57. If the decision 61 determines that the disc 1 is detached from the disc player DP, the process 62
In, the program information processing unit 8 of the adjustment control signal Cv
Then, the supply to the level adjusting unit 42 is stopped, the volume adjuster 42a built in the level adjusting unit 42 is returned to the original state, and the process returns to the decision 51.

FIG. 5 shows a specific configuration example of a program information processing unit 8'corresponding to the program information processing unit 8 in the above-mentioned embodiment in another example of the disc player according to the present invention.

In the example of the program information processing unit 8'shown in FIG. 5, each of the reproduction program information P _L and P _R from the decoder 7 is supplied to the digital audio signal processing unit 45, in which, for example, Adjustments such as sound field correction adjustments are made. Digital audio signal processing unit 45
Adjusts the reproduction program information P _L and P _R from the decoder 7 and detects the adjustment mode,
Data corresponding to the detected adjustment mode is generated, and the data is sent to the system control unit 10 as adjustment data Dx. Further, the digital audio signal processing unit 45 includes
The adjustment control signal Cv is supplied from the system control unit 10. When the adjustment control signal Cv is supplied to the digital audio signal processing unit 45, the digital audio signal processing unit 45 reproduces from the decoder 7. The program information P _L and P _R are controlled so that adjustment is performed in an adjustment mode corresponding to the content of the adjustment control signal Cv.

Each of the reproduction program information P _L and P _R adjusted by the digital audio signal processing unit 45 is
After being converted into an analog signal in the D / A converter 46 and further adjusted in level by the level adjuster 47 to have an appropriate level, the left and right components A _L and A _{R of the} stereo audio signal are passed through the filter 48.
Is taken out and led to the output terminals 9L and 9R. In this way, each of the left and right components A _L and A _R of the stereo audio signal obtained from the filter 48 is
It is assumed that predetermined adjustments such as sound field correction adjustments have been made.

Even in the disc player DP having such a program information processing unit 8 ', when the disc 1 is mounted and the plurality of segmented program information recorded on the disc 1 is reproduced, the program information processing unit 8'is set to the reproduction program information P _L and P _R from the decoder 7 so as to take an adjustment mode according to the division program information on the disc 1, and accordingly,
From the program information processing unit 8 ', the adjustment data Dx corresponding to the set adjustment mode is generated.

Under the reproduction output automatic adjustment mode, first, the filing switch 22 is operated.
The filing switch 22 is operated.
The adjustment data Dx obtained from the program information processing unit 8 ′ at that time by the system control unit 10 receiving the operation input signal from the disc identification data Di formed by a part of the reproduced TOC data Toc obtained from the decoder 7. With and associated with it, RAM
It is stored in 12.

Also in this case, when the filing switch 22 is operated again for the same disk 1,
The adjustment data Dx obtained from the program information processing unit 8 ′ at that time by the system control unit 10 is stored in the RAM 1 first.
2 is stored in the RAM 12 in association with the disc identification data Di stored in 2, and the adjustment data Dx in the RAM 12 is rewritten.

When the disc 1 is newly mounted under the reproduction output automatic adjustment mode,
The system control unit 10 compares the disc identification data Di newly obtained from the decoder 7 with each disc identification data Di already stored in the RAM 12. As a result, among the disc identification data Di stored in the RAM 12, the newly obtained disc identification data Di
If there is a match with the disk identification data Di stored in the RAM 12,
Of the adjustment data Dx stored in the RAM 12 in association with the result of the comparison, the adjustment control is read from the RAM 12 and corresponds to the content of the read adjustment data Dx. The signal Cv is formed and supplied from the system controller 10 to the program information processor 8 '.

In the program information processing unit 8'which receives the adjustment control signal Cv, the reproduction program information P ₁ and P _R from the decoder 7 are adjusted in an adjustment mode corresponding to the content of the adjustment control signal Cv. Is automatically taken. Then, thereafter, the sorting program information is read from the disc 1 by the optical head 3, and the output terminal 9
The left and right components A _L and A _{R of} the stereo audio signal that have appropriate levels are derived from L and 9R, respectively.

Therefore, in the case where the same disc 1 is repeatedly mounted, the identity is confirmed by the disc identification data Di each time the disc 1 is mounted, and then the disc 1 is already set. Further, the adjustment mode for the reproduction program information in the program information processing unit 8'is automatically reproduced.

[0050]

As is clear from the above description, the disc player according to the present invention obtains reproduction program information from a disc on which TOC data is recorded in addition to the program information like a CD, and reproduces the reproduction program information. According to the disc, for example, adjustment such as level adjustment is to be performed. Moreover, under a specific operation mode,
When the same disc is repeatedly mounted for information reproduction, an adjustment mode for the reproduction program information once set for the disc even if the mounting state of another disc is interposed during the repetition. However, it is supposed to be automatically reproduced every time the disc is mounted.

Therefore, the user of the disc player according to the present invention sets the adjustment mode for the reproduction program information each time the disc is mounted, when the same disc is repeatedly mounted to reproduce information. For example, it is not necessary to operate the volume adjuster, and the user's annoying operation can be reduced.

[Brief description of drawings]

FIG. 1 is a block connection diagram showing a main part of an example of a disc player according to the present invention.

2 is a front view of the disc player according to the example shown in FIG. 1. FIG.

FIG. 3 is a block connection diagram showing a specific configuration example of a program information processing unit in the example shown in FIG.

4 is a flowchart showing an example of a control operation program executed by a microcomputer in an example of a system control unit used in the example shown in FIG.

FIG. 5 is a block connection diagram showing a specific configuration example of a program information processing unit in another example of the disc player according to the present invention.

[Explanation of symbols]

 1 disk 3 optical head 4 read signal processing unit 7 decoder 8 program information processing unit 10 system control unit 21 reproduction output automatic adjustment mode switch 22 filing switch 41, 46 D / A conversion unit 42, 47 level adjustment unit 42a volume adjustment 43 Volume adjustment data generator 44, 48 Filter 45 Digital audio signal processor

Claims (1)

Claim: What is claimed is: 1. An information reading means for a disc in which index table data is recorded in addition to program information, and the index table data and program information are reproduced based on a read signal from the information reading means. Signal reproducing section, a program information processing section for adjusting reproduction program information obtained from the signal reproducing section and generating adjustment data corresponding to the adjustment, and a memory means for adjusting data obtained from the program information processing section. Data storage instructing means to be operated to instruct storage, reproduction index table data obtained from the signal reproducing section, the adjustment data, and an operation input signal obtained by operating the data storage instructing means. Was
A system control unit that performs a control operation according to the operation input signal, and when the system control unit receives the operation input signal under a specific operation mode, the adjustment data and the reproduction index table. At least part of the data is stored in the memory means in association with each other, and
When at least a part of the reproduction index table data newly obtained from the signal reproducing section matches at least a part of the reproduction index table data stored in the memory means, the program information processing section is caused to include the signal reproducing section. A disc player which is associated with at least a part of the reproduction index table data regarding the reproduction program information obtained from the disk player, and is adapted to perform adjustment according to the adjustment data stored in the memory means.