JPH10283718A - Information reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a reproducing apparatus which can display a waiting time until the data can be actually reproduced from issuance of data reproduction request by calculating the time until reproduction is started by the reproducing means from designation of a recording medium to be reproduced. SOLUTION: When a program reproducing request is input from an input control apparatus 44, CPU 31 detects whether a disk is chucked or not. When the disk is chucked but it does not record a reproduction request program, CPU 31 calculates the time t1 until the disk is removed from the chucked condition and is then accommodated in a disk magazine 40, the time t2 until a required disk is selected under the control of CPU 31 from a disk magazine and it is then chucked again to the reproducing apparatus with a carrying mechanism 41 and the time t3 until the optical head 3 is moved to the reproducing program for the purpose of reproduction. A total time T of these times t1, t2 and t3 is defined as the time to be displayed for a user and it is then displayed on a display unit 46 via a display control unit 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a reproducing apparatus for reproducing information from a recording medium such as an optical disk.

[0002]

2. Description of the Related Art As a reproducing apparatus using an optical disk as a recording medium for audio signals (digital audio data), a compact disk (CD) player is widely used.

In a recent CD player, a plurality of CDs are stored in advance in a stocker such as a disk magazine, and a program (eg, a digital audio data program) requested in response to a request signal from an external source such as a user. There is a type in which a CD on which a song or the like is recorded is taken out of a stocker, and a program can be reproduced from the CD. In particular, some CD players used for business such as CD karaoke have a stocker capable of storing about 100 CDs.

In such a CD player having a stocker capable of storing a plurality of CDs, the time from when a reproduction request is issued to a program of a certain CD to when reproduction is started is determined by the storage state of the CD ( During save / load,
It usually takes a certain amount of time, depending on the situation, such as during chucking. During the waiting time from the reproduction request from the user to the actual reproduction, the save / load operation is indicated to inform the user of the current state of the CD recording the program requested by the user. There is a CD player that performs a save / load display and a chucking display indicating that chucking is being performed.

[0005]

However, during the waiting time from the user's request for reproducing the program to the actual reproduction, the state of the CD recording the program requested by the user is determined. However, even if the CD player can be notified by displaying the state, it does not actually indicate how long it will take from the request of the program to the reproduction, and after all, the user must You have to wait vaguely until the requested program is played.

Accordingly, an object of the present invention is to provide a reproducing apparatus which can indicate a waiting time from a data reproduction request to actual reproduction by a time.

[0007]

A reproducing apparatus according to the present invention comprises:
Storage medium storing means for storing a plurality of recording media on which information is recorded, specifying means for specifying a recording medium to be reproduced among the plurality of storage media, and means for extracting the specified storage medium from the storage medium storing means A reproducing unit that reproduces information from the recording medium; a unit that calculates a time from when the recording medium to be reproduced is specified by the specifying unit until reproduction starts by the reproducing unit; and a display that displays the calculated time. Means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings using an example of a compact disk (CD) reproducing apparatus. However, the present invention is not limited to CDs, MD), digital video disk, cassette tape, and other playback devices. In the following example, reproduction of digital audio data will be described.
It can be applied to digital data such as data.

1. CD playback device FIG. 1 is a block diagram of a CD playback device. Disc 1
Records digital audio data and other information in the form of pits. The optical head 3 irradiates the disk 1 with laser light while the disk 1 is rotationally driven by the spindle motor 2, and reads information from the reflected light.

A signal read from the optical head is amplified by an RF amplifier 7 and is amplified by a digital signal processor (DSP).
8 is input. The RF equalizer 9 of the DSP 8 processes the input RF signal to extract a reproduced RF signal, a tracking error signal TE, a focus error signal FE, and the like.

The reproduced RF signal is supplied to an asymmetry correction circuit 1
EFM (Eight to Fourt) of binary pulse train corrected by 0
een Modulation) signal and sent to the RF-PLL circuit 11. The PLL circuit 11 controls the channel clock (PLC) synchronized with the EFM signal by the phase lock loop control.
K), and generates a reproduction clock called EFM demodulator 1
3 is supplied as a clock for demodulation processing of the EFM signal.

The EFM signal is EFM-demodulated by an EFM demodulator 13 to extract a sub-code component, and a sub-code processor 14 performs code processing on the sub-code data to extract a sub-Q code and the like. The data demodulated by the EFM demodulation unit 13 is written into the ECC-RAM 16, and the error correction unit 15 performs error correction processing as CIRC decoding.

The data decoded by the CIRC is subjected to a de-interleave process in a de-interleave circuit 17, and is demodulated into digital audio data of 44.1 KHz sampling and 16-bit quantization. The digital audio data DT is stored in the memory controller 2
9 is temporarily stored in the buffer memory 30. Data read from the buffer memory 30 at a predetermined timing is converted into an analog audio signal by the D / A converter 32, supplied to the audio amplifier from the terminal 33, and output as, for example, an L channel and R channel audio signal. You.

The buffer memory 30 is called an anti-shake memory (shock proof memory) and stores, for example, digital audio data DT for about 3 seconds as reproduced sound. Of course, a larger memory may be used,
It does not necessarily need to be a DRAM. By using this buffer memory, a vibration proof function can be obtained.

That is, the rotation speed of the disk 1 by the spindle motor 2 is adjusted, and the optical head 3
Up to high-speed processing, and
The audio data DT is written into the buffer memory 30. On the other hand, reading from the buffer memory 30 is performed at a relatively low speed required for reproduction of an analog audio signal under the control of the memory controller 29.

As described above, due to the difference between the write bit rate and the read bit rate of the buffer memory 30, a certain amount of data is always stored in the buffer memory 30. Therefore, even if a track jump or the like occurs due to disturbance or the like, and data reading from the disk 1 by the optical head 3 is temporarily interrupted, reading from the buffer memory 30 can be continued, so that reproduction data is not interrupted. The optical head 3 may restart reading from an appropriate position while reproduction with accumulated data is continued.

The subcode information and TOC (Table of Contents) information extracted as described above are stored in the CPU.
The CPU 31 performs a frame check (check of data continuity). If there is an error that cannot be corrected by the error correction processing by the error correction unit 15, a C2P0 signal indicating the error is sent to the CPU 31. Further, the DSP 8 sends a score signal indicating the synchronization state of the data written to the buffer memory 30 to the CPU 31.

The tracking error signal TE and the focus error signal FE obtained by the RF equalizer 9 are
It is supplied to the optical system servo signal processing unit 12. The optical system servo processing unit 12 generates a servo drive signal according to a track jump command, an access command, and the like supplied from the CPU 31 via the TE, the FE, and the CPU-IF 19.

The optical system servo signal processing section 12 generates a servo signal, for example, as a PWM modulation signal in response to the focus error signal FE, and supplies it to the servo driver 26. In response, the servo driver 26 generates a focus drive signal and applies the focus drive signal to the focus coil of the two-axis mechanism 4. The objective lens 3a is driven based on this signal.

The optical servo signal processing unit 12 turns off the focus servo loop during the focus search and supplies a PWM modulation signal to the servo driver 26 based on search voltage generation control from the CPU 31.
In response, the servo driver 26 applies a focus search voltage as a focus drive signal to the focus coil of the two-axis mechanism 4.

The optical system servo signal processing section 12 generates a servo signal as a PWM modulation signal in response to the tracking error signal TE and supplies the servo signal to the servo driver 26.
The servo driver 26 generates a tracking drive signal based on the servo signal, applies the signal to the tracking coil of the mechanism 4, and drives the objective lens in the tracking direction.

Further, the optical system servo signal processing section 12 generates a thread servo signal as a PWM modulation signal from the low frequency component of the tracking error signal TE and supplies it to the servo driver 26. The driver 26 generates a sled drive signal based on the servo signal and drives the sled mechanism 5.

As described above, in the RF-PLL circuit 11,
A reproduction clock, that is, a channel clock (PLCK) synchronized with the EFM signal is generated by using the reproduction RF signal, that is, the EFM signal as an input. This reproduction clock is a signal synchronized with the rotation of the disk 1. The spindle servo signal processing section 18 compares the reproduced clock with a reference clock generated from the master clock, for example, and obtains a spindle error signal SPE as a difference between the reproduced clock and the reference clock.

Normally, this spindle error signal SPE
In this example, the DSP 8 uses a variable speed control method (wide capture method) and locks the system PLL with respect to the rotation of the spindle motor 2 in this example. Is performed, and signal processing synchronized with the rotation of the spindle motor 2 is performed.

For this reason, the spindle servo signal processing unit 1
8, the spindle error signal SPE output from the voltage-controlled oscillator (VC
O) 21 is input. That is, the spindle error signal SPE is used as the control voltage of the VCO 21.

Since the spindle error signal SPE changes according to the rotation speed of the spindle motor 2, the VCO 2
1 oscillates according to the rotation speed of the spindle motor 2. The oscillation output of the VCO 21 is supplied to a clock generator 34, and the clock generator 34 generates a master clock of the DSP system according to the oscillation output of the VCO 21.
The master clock CK serves as a processing reference in the DSP 8 including the reference clock of the RF-PLL circuit 11. Therefore, the entire signal processing system of the DSP 8 performs an operation following the rotation speed of the spindle motor 2. Become.

When the DSP 8 operates with a clock corresponding to the rotation speed of the spindle motor 2, the linear speed (CL
Unlike the operation in the V (Constant Line Velocity) mode, the decoding process of the read data can be performed even when the spindle motor 2 is being accelerated, for example.

The output of the VCO 21 is supplied to the phase comparator 25 after being divided by the 1 / M divider 22. On the other hand, the system clock from the crystal oscillator 28 is supplied to the phase comparator 25 after being divided by 1 / N. The values of these dividing ratios M and N are determined by the automatic sequencer 23.
Is controlled by

The phase comparator 25 compares the phase of the output of the VCO 21 with the phase of the system clock from the oscillator 28 to generate a drive control signal for the spindle motor 2, based on the drive control signal from the LPF / spindle driver 27. Drive power is applied to the spindle motor 2. Thereby, the spindle motor 2 is controlled to a predetermined speed.

Here, the 1 / M frequency divider 22 and the 1 / N frequency divider 2
By setting the dividing ratio of 4 to a predetermined value, the rotation speed of the spindle motor 2 can be increased to a standard speed, 1.5 times speed, 2 times speed, etc.
It can be controlled to any speed. That is, the CPU 31
By controlling the auto sequencer 23 via the CPU-IF 19, the spindle rotational speed can be variably controlled.

Therefore, the CPU 31 reads information from the disk 1 while accelerating the spindle motor 2 until the buffer memory 30 reaches a specified amount, controls each part of the DSP to store the information in the buffer memory, and stores the data in the buffer memory 30. After the accumulated amount reaches the designated amount, the spindle motor 2 is decelerated, and thereafter, the rotational speed of the spindle motor 2 is accelerated / decelerated so that the data storage amount in the buffer memory 30 is kept constant.

2. TOC and Subcode The subcode recorded in the data area of the disc 1 (CD) and the TOC recorded in the lead-in area will be described. The minimum unit of data recorded in a CD is one frame, and one block is composed of 98 frames.

FIG. 2 shows the contents of one frame. One frame is composed of 588 bits, the first 24 bits are synchronization data, and 14 bits of sub-coding follow 3 bits of concatenated bits. This is followed by a data area and a parity area.

One block is formed by 98 frames of this configuration, and the subcodings extracted from the 98 frames are collected to form one block of subcode data shown in FIG. . First and second frames (98n + 1, 98n +
The subcoding of 2) is a synchronization pattern, and the third frame (98n + 3) to the 98th frame (98n + 9)
P, Q, R, S, T, U, V, W
Is a bit array represented by an 8-bit channel.
That is, each channel of P, Q, R, S, T, U, V, and W has 96 bits.

Of these channels, P and Q channels are used for access management. The P channel
A pause portion between programs (songs) is shown, and is set to "1" for a few seconds immediately before the start of the program. For the Q channel, finer control is possible.

FIG. 3B shows the contents of the Q channel.
The first four bits (Q _{1 to} Q ₄ ) are control data for a reproducing apparatus and the like, and are used for the number of channels of the reproducing apparatus, emphasis, identification of a CD or CD-ROM, and the like. The next 4 bits (Q ₅ ~Q ₈₎ indicates the address, subsequent 72
It is used as control bits of the sub Q data bits (Q ₉ ~Q _80). If this address bit is "0001" indicates that the sub Q data (Q ₉ to Q ₈₀₎ is audio Q data, when it is "0100" indicates that the video Q data . Last Q _{81 to} Q
_{The 96} 16 bits are used as a CRC.

The sub-Q data stored in the lead-in area is used as TOC information. FIG. 4 (a)
Indicates the contents of 72-bit sub Q data (Q _{9 to} Q ₈₀ ). The 72-bit sub-Q data is composed of nine 8-bit areas. The first 8 bits represent a track number (TNO) indicating the recording order of the program, and is always fixed to “00” in the lead-in area. Next, P
An OINT (point) area follows, followed by MIN (minutes), SEC (seconds), and FR as elapsed time in the program.
AME (frame number) is indicated. Further, PMIN, PSEC, and PFRAME are recorded after 8-bit “0”, and the meaning of these values is determined by the value indicated by POINT.

When the value of POINT is "01" to "99", the value indicates the program number. In this case, PMIN, PSEC and PFRAME are the start points (absolute time) of the program indicated by the number. address)
, PMIN (minutes), PSEC (seconds), PFRAM
It is indicated by E (frame number).

When POINT is "A0", PMI
N indicates “the number of the first program”, and PSEC and PFRAM are “00”. POINT says "A
In the case of "1", PMIN indicates "last program number", and PSEC and PFRAM are "00". If POINT is “A2”, “PMIN,
"PSEC, PFRAM" indicates the start point of the lead-out.

FIG. 5 shows the contents of the TOC in the case of a disc on which six programs (songs) are recorded. As shown in FIG. 5, the track numbers (TNO) are all "00".
Block No. indicates each frame number of the sub-coding during lead-in. The same content is repeatedly recorded in each TOC data over three blocks. POINT
Is PMIN, PSEC, P in "01" to "06"
FRAME shows start points of programs 1 to 6, respectively.

The PMIN with the POINT of "A0" indicates the first program number "01" and the PSE
C and PFRAM are “00”. This PSEC
Is used for disc identification, and "00" indicates that the disc is a digital audio CD. PO
The “last program number” is indicated in the PMIN with INT “A1”, and the “PMI” with “A2” POINT
“N, PSEC, PFRAM” indicates the start point of the lead-out. After block n + 27, the contents of blocks n to n + 26 are repeated.

FIG. 4B shows the format of tracks # 1 to #n on the disk 1 where data such as a program is actually recorded and the sub-Q data in the lead-out area. The first 8 bytes indicate a track number (TNO) indicating the recording order of the program, and are set to "AA" in the lead-out area. Next, POINT (point)
Area followed by M as the elapsed time in the program
IN (minute), SEC (second), and FRAME (frame number) are shown. Further, after the 8-bit “0”, the AM
IN, ASEC, and AFRAME are recorded. These values indicate the absolute time address (time since the first data of the CD), PMIN (minutes), PSEC (seconds), PFR
It is indicated by AME (frame number).

One block consisting of 98 frames is called one subcoding frame, and one second as digital audio data (speech data) includes 75 subcoding frames. Therefore, values that can be taken by the PFRAME as an address are "0" to "74".

3. CD playback device with stocker FIG. 6 is a block diagram of a CD playback device with stocker. This CD playback device with a stocker uses the C shown in FIG.
A disc magazine (stocker) 40 capable of storing a plurality of discs 1 in the D reproducing apparatus, a key input control unit 42,
A display device 43 for displaying the state of the CD playback device.

The disk magazine 40 includes a transport mechanism 41 for transporting (loading / saving) the disk 1 requested by the CPU 31 to a reproducing apparatus including the spindle motor 2 and the optical head 3 and mounting (chucking) the disk 1. I have. The key input control unit 42 includes a key 47 for inputting a request from the user, and an input control device 44 for sending the input request signal to the CPU 31. The display device 43 includes a display control unit 45 that receives a display signal from the CPU 31 and causes the display unit 46 to display the display signal. The display unit 46 is typically composed of a liquid crystal display device that displays the state of the CD playback device or the like according to a display signal.

When a digital audio data program (such as a song) is reproduced, the input control unit 44 transfers a program request signal input by the user from the key 47 to the CPU 31. The CPU 31 controls the disk magazine 40 according to the transferred request signal,
The disc 1 on which the program corresponding to the request signal is recorded is selected. The key input request signal may be a code for identifying both the program to be reproduced and the recording medium on which the program is recorded, or may be a code for identifying only the program to be reproduced. In the latter case, a comparison table between the recording media stored in the disk magazine 40 and the programs recorded therein is stored in the memory of the playback device.
Determines the recording medium to be taken out with reference to this comparison table.

Under the control of the CPU 31, the transport mechanism 41 transports the disk 1 selected in response to the request signal to the reproducing apparatus and chucks the disk 1 with the spindle motor 2. CP
U31 rotates the spindle motor 2, moves the optical head 3 to the head position of the requested program, and starts reproduction.

Simultaneously with the above operation, the CPU 31 which has received the program request signal calculates the time required until the reproduction of this program is started, and transfers it to the display control unit 45 of the display device 43 as time data. The display control unit 45 includes:
The display unit 4 according to the transfer of the time data from the CPU 31
6 shows the time until the start of reproduction of the program. CP
The U31 transfers the time data to the display control unit 45, for example, while subtracting the display time every second, and transfers the blank data 50 [msec] before, and transfers the blank data to the display for program reproduction. Prepare to switch.

4. Calculation and Display of Time FIG. 7 is a flowchart showing a process of calculating a time from when a user inputs a request for reproducing a program by a key until reproduction of the program is started, and a process of displaying the calculated time.

In response to an input of a program reproduction request from the user (301), the CPU 31 detects whether or not the disc has already been chucked by the reproduction device (302). If the disk is already chucked, it is detected whether the chucked disk is a disk recording a program requested to be reproduced (303). If the chucked disc has recorded the program requested to be reproduced, the time required to move the optical head 3 from the current track to the track of the program to be reproduced and start the reproduction is reduced. It is calculated (304).

The calculation of the time is obtained, for example, as follows. TO of the disc (CD) shown in FIG.
From the C information, the number of sub-coding frames up to the current position is calculated, and then the number of sub-coding frames up to the head data of the reproduced program is calculated.

From the TOC information shown in FIG. 5, the number of subcoding frames up to the head data of the program to be reproduced is calculated as follows. As mentioned above, 1
A program for a second corresponds to 75 sub-coding frames. Now, assuming that the POINT number of the program to be reproduced is “03” (see FIG. 5), the number F of subcoding frames up to the beginning of this program is F = 16
× 60 × 75 + 28 × 75 + 63 = 74163.

The sub-coding frame up to the current position is "0" (the optical lens is at the lead-in start position)
Then, by comparing these frames “0” and “74163”, the time T1 [sec] required for the optical head to perform a track jump to the head data of the program to be reproduced is obtained.
Is found.

Next, servo control such as focusing and tracking for focusing the optical lens on this value T1 is performed, data is read from the track reached by the track jump, and the sub-coding shown in FIG. 3 is reproduced. The time T2 [sec] required to reach the first frame of the target program is added based on the channel information and the sub-Q data included in the Q channel.

The time T calculated as described above is
31 transmits the time data to the display control unit 45, and the display control unit 45 receiving the time data displays a time corresponding to the time data, for example, 3 seconds, on the display unit 46 (305).

The CPU 31 subtracts the time every second, transfers the subtracted time data to the display device 43, and displays it (306). Immediately before the start of reproduction of the program, for example, 50 [msec], the CPU 31 transfers the blank display data to the display device 43 and displays it (307) to prepare for reproduction of the program (310).

In step 303, if the chucked disk does not record the program requested to be reproduced, the disk needs to be replaced. Therefore,
The time (t) from when the disk chucked to the playback device is removed and stored in the disk magazine 40
1) and a disk on which a program requested to be reproduced is recorded is selected from the disk magazine 40 under the control of the CPU 31, transported (loaded / saved) to the playback device by the transport mechanism 41, and chucked there. (T2) is calculated (311). Further, the time (t3) from moving the optical head 3 to the track of the program to be reproduced and reproducing the program is calculated as described above (312).

Here, the above-mentioned t1 and t2 are determined by the storage capacity of the disk in the disk magazine 40 (the number of stored disks), the processing capacity of the CPU 31, the performance of the transport mechanism 41, and the like. Time.

The CPU 31 calculates t1 to t3 as described above.
Time data T (T = t1 + t2 + t) to be displayed to the user
3) is calculated and sent to the display control unit 45 as time data. Upon receiving the time data, the display control unit 45 displays the time corresponding to the time data on the display unit 46, for example, 7 seconds,
Is displayed (313). Next, proceed to step 306,
The requested program is reproduced by performing the above-described subtraction processing and the like (306, 307) (310).

If the next playback request is made before the disc is chucked by the first playback request, such as when different playback requests are made consecutively, step 3 is executed.
02, when the disc is not chucked, it is detected whether or not the disc is being loaded / saved by the first reproduction request (321). If the load / save is not being performed, an error state such as a failure of the transport mechanism 41 or no disk in the disk magazine 40 is considered, so that error processing is performed (330).

If the disk being loaded / saved is being loaded, it is necessary to exchange the disk being loaded / saved with the disk recording the program requested to be reproduced last. Therefore,
The time (t1 ') for storing the disk being loaded / saved in the disk magazine 40 and the disk on which the program requested to be reproduced is recorded are stored in the disk magazine 40.
Calculates the time (t2) for loading / saving and chucking to / from the playback device by the transport mechanism 41 (32).
2). Further, the time (t3) from the time when the optical head 3 is moved to the track of the program to be reproduced to the time when the program is reproduced is calculated as in the above example (323).

Here, the above-mentioned t1 ′ is greatly influenced by the storage capacity of the disk in the disk magazine 40 and the performance of the transport mechanism 41, similarly to the above-mentioned t1 and t2. Become.

The CPU 31 determines that the above-mentioned t1 ', t2 and t3
Time data T (T = t1 ′) to be displayed to the user.
+ T2 + t3) and sends it to the display control unit 45 as time data. Display control unit 4 receiving the time data
5 displays the time corresponding to the time data, for example, 6 seconds, on the display unit 46 (324). Next, step 30
6, the subtraction processing as described above (306, 30)
7) to reproduce the requested program (31)
0).

In the above embodiment, the CPU 31 performs the time data subtraction processing (306). However, the processing may be performed by the display controller 45 of the display device 43.

In the above embodiment, the waiting state from the request for reproduction to the start of reproduction is displayed by time. However, the display may be changed to an illustration type display as shown in FIG. This illustration display may be performed together with the display.

Further, in the above embodiment, the reproducing apparatus of the variable speed control, that is, the wide capture system has been described, but the present invention is not limited to this.

[0067]

As described above, according to the present invention, the waiting time from the data reproduction request to the actual reproduction can be indicated by the time, thereby improving the operability of the user.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a playback device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a frame structure of a CD.

FIG. 3 is an explanatory diagram of CD subcoding.

FIG. 4 is an explanatory diagram of CD sub-Q data.

FIG. 5 is an explanatory diagram of TOC data of a CD.

FIG. 6 is a block diagram showing a playback device with a stocker according to the embodiment of the present invention.

FIG. 7 is a flowchart showing the flow of a reproduction waiting time display process according to the present invention.

FIG. 8 is a diagram showing an example of displaying a reproduction waiting time according to the present invention.

[Explanation of symbols]

Reference Signs List 1 disc 2 spindle motor 3 optical head 4 two-axis mechanism 7 RF amplifier 8 RF equalizer unit 11 RF-PLL circuit 13 EFM demodulation unit 14 subcode processing unit 15 error correction unit 18 spindle servo signal processing unit 29 memory controller 30 buffer memory 31 CPU 34 Clock generator 40 Disk magazine 42 Key input control unit 43 Display device

Claims (3)

[Claims] A storage medium storing means for storing a plurality of recording media on which information is recorded; a designation means for designating a recording medium to be reproduced among the plurality of storage media; Means for extracting information from the storage medium storage means, reproducing means for reproducing information from the recording medium, and means for calculating the time from when the recording medium to be reproduced is specified by the specifying means until reproduction by the reproducing means starts. An information reproducing apparatus comprising: a display unit that displays the calculated time. 2. The information reproducing apparatus according to claim 1, wherein the calculated time is subtracted for each scheduled unit and displayed. 3. The information reproducing apparatus according to claim 1, wherein a state of the recording medium is displayed instead of the calculated time or together with the calculated time.