JP3408036B2 - Recording and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording information data obtained by converting an analog signal such as an audio signal into a digital signal on a recording medium such as a disk. The present invention relates to a recording / reproducing device such as a mini disk (hereinafter, referred to as MD) device for reading and reproducing information data. 2. Description of the Related Art In an MD apparatus which is a recording / reproducing apparatus capable of rewriting recorded information data, an M apparatus which is a recording medium is used.
Naturally, the amount of data that can be recorded in the recording area of D is limited, and the data amount of all songs on the MD as a recording medium cannot exceed the upper limit. Therefore, in the above-mentioned MD device, when a new music piece is recorded on an already recorded recording medium MD, the data amount of all the music pieces on the recording medium MD is likely to exceed the upper limit. By using the set editing function, the unnecessary music on the MD as a recording medium must be erased to secure an area where a new music can be recorded. [0004] Therefore, as the editing function, the tune of the designated tune number is erased on the TOC (Table of Contents) information, and the recording area of the tune is set as an unrecorded area.
ALL-ERAS that erases all functions and all songs on the TOC information and makes all recorded areas on the disc unrecorded areas
An E function and the like are provided. [0005] In the above-mentioned MD device, when a song of a designated song number is erased on the TOC information to secure an unrecorded area, a plurality of songs are erased on the TOC information. Requires the ERASE function of the editing function to be repeatedly performed, which is troublesome. [0006] Also, according to the MD standard, the track numbers must be consecutive, so that at the time of performing one ERASE operation, the track numbers after the erased track are the track number-1 before the ERASE operation. Become. Therefore, when a plurality of songs are to be erased on the TOC information, the song to be erased next is checked every time the ERASE operation is performed once, or the song to be erased next is considered in consideration of a change in the song number due to the ERASE operation. It is necessary to specify it, which is troublesome and easily leads to erroneous erasure. Further, E
Since the RASE function cannot be canceled once executed, it is necessary to pay sufficient attention to the music number designation at the time of the ERASE operation, which is troublesome. A recording / reproducing apparatus according to the present invention uses a recording medium having an area for recording data and an area for recording TOC information, and reads data and TOC information from the recording medium. An optical pickup for reading data, a recording head for recording data and TOC information on the recording medium, a display / editing means for displaying and editing TOC information on the recording medium, and the pickup, the recording head, and a display / editing means. In order to solve the above-mentioned problems, a recording / reproducing apparatus including a control unit for controlling is provided with the following unit. That is, the recording / reproducing apparatus according to the first aspect of the present invention comprises: a setting unit capable of arbitrarily setting a plurality of data groups to be erased from a plurality of data groups recorded on the recording medium; A reproducing unit for sequentially reproducing a plurality of data groups to be erased set by the setting unit; an erasing determining unit for erasing and confirming the data group reproduced by the reproducing unit; and an erasing object determined by the erasing determining unit. Multiple
To display TOC information after erasing based on the data group of
Means, and a canceling means for canceling the execution of the erasure. The plurality of data groups set and determined by the control means and to be erased are displayed unless the execution of the erasure is canceled after displaying the data group. Then, the data is erased, the TOC information is recorded, and an unrecorded area is secured. The operation of the present invention will be described below. According to the configuration of the first aspect, a plurality of data groups to be erased are arbitrarily set from the plurality of data groups recorded on the recording medium by the setting unit, and the plurality of data groups to be erased set by the setting unit are set. The data group is reproduced in order by the reproducing means, and the data group being reproduced is erased by the erase determining means.
After defining the data group,
Next, the TOC information after erasing is displayed by the display means, and then
As long as the execution of the erasure is not canceled by the cancellation means, the control means erases a plurality of data groups to be erased collectively, records the TOC information, and secures an unrecorded area. Thus, before the erasure, the contents of the data group to be erased can be first confirmed by reproduction, and the T
Order to be re-confirmed by the display of OC information, it is possible to erase securely erase data you want to group. In addition, when a plurality of arbitrarily set data groups to be erased are reproduced,
If there is a group of data that you do not want to delete, and if you do not confirm the deletion of this group of data, you can erase only the group of data that you really want to erase among the multiple groups of data that you want to erase. There is no erroneous erasure. Of course
Of course, if you do not want to delete
If data groups are discovered, cancel execution of erasure
Is enough. An embodiment in which the present invention is applied to an MD device will be described below with reference to FIGS. 1 and 2. The MD device as the information recording / reproducing device according to the present embodiment digitizes and records analog information such as audio data recorded on a magneto-optical disk, and allows the user to arbitrarily record the analog information on the magneto-optical disk. It has a writing area (described later) in which information can be written. As shown in FIG. 1, such an MD device includes an optical pickup 2, an RF amplifier 3, an encoder / decoder / signal processing circuit 4, a memory controller 5
, A shockproof memory 6, a data decompression / compression circuit 7, a converter 8, an output amplifier 9, and a speaker 1.
0, a spindle motor 11, a feed motor 12, a driver circuit 13, a servo control circuit 14, a system controller 15, a power supply circuit 16, a display device 17,
Operation device 18, head drive device 19, recording head 2
0, an input amplifier 21, and an input terminal 22. The reproducing operation will be described. The optical pickup 2 is a reproducing head that irradiates a disk 1 as a recordable / reproducible recording medium with light and takes in reflected light from the disk 1. The RF signal is read. The RF amplifier 3 amplifies the RF signal read by the optical pickup 2 and sends it to the encoder / decoder / signal processing circuit 4. The RF amplifier 3 generates a servo control signal such as a focus error signal and a tracking error signal from the RF signal, and sends the servo control signal to the servo control circuit 14. An encoder / decoder / signal processing circuit (hereinafter, referred to as a signal processing circuit) 4 is provided so as to be communicable with a system controller 15 for processing subcodes and the like. The digital signal is demodulated and converted into digital information. The digital information is subjected to predetermined processing such as error correction.
To be forwarded to. The memory controller 5 includes a signal processing circuit 4
The write operation and the read operation of the shock proof memory 6 are controlled in accordance with an instruction from the system controller 15 so that the digital information that has passed through is stored in the shock proof memory 6. The memory controller 5 transfers the digital information output from the signal processing circuit 4 to the shock proof memory 6 and transfers the digital information output from the shock proof memory 6 to the data decompression / compression circuit 7. I have. The shock proof memory 6 temporarily stores digital information output from the signal processing circuit 4, and is, for example, a 4 Mbit DRAM (Dyn).
Amic Random Access Memory
A semiconductor memory such as y) is suitable. The shock proof memory 6 is arranged between the signal processing circuit 4 and the data decompression / compression circuit 7, and protects digital information to prevent interruption of recording / reproduction due to disturbance such as vibration. It is provided for the purpose of absorbing the difference between the transfer speed of the digital information output from the signal processing circuit 4 and the transfer speed of the digital information input to the data expansion / compression circuit 7. A data expansion / pressure circuit 7 expands the digital information output from the memory controller 5 and time-axis-compressed at a predetermined compression rate in the time axis to obtain a D / D signal of the converter 8.
The signal is transferred to the A converter 8a, where it is reproduced to the original analog information, and then amplified by the output amplifier 9 to obtain the speaker 10
Is supplied to The A / D converter will be described later. The feed motor 12 is a motor for moving the optical pickup 2 in a direction orthogonal to a recording track (not shown) of the disk 1. Spindle motor 11
Is a motor for rotating the disk 1. The driver circuit 13 includes the feed motor 12 and the spindle motor 1
In order to operate a drive device 1 (not shown) for driving the objective lens 1 (not shown) of the optical pickup 2, power is supplied to these devices. The servo control circuit 14 includes the optical pickup 2
This is a circuit that performs feedback control of each of the above-described devices driven by the driver circuit 13 so that an operation of, for example, causing light emitted from the optical disk to follow a target recording track of the disk 1 is performed accurately. The servo control circuit 14 controls the RF amplifier 3 according to an instruction from the system controller 15.
A control amount such as focus, tracking, and spin is determined based on the servo signal output from the controller, and the control amount is sent to the driver circuit 13 as a control signal. The system controller 15 is a microcomputer that centrally manages the signal processing circuit 4, the memory controller 5, the servo control circuit 14, the display device 17, the operation device 18, and the head drive device 19. Power supply circuit 1
Numeral 6 supplies power to the optical pickup 2, the RF amplifier 3, the signal processing circuit 4, the driver circuit 13, the servo control circuit 14, the system controller 15, the display device 17, the head drive device 19 and the like. The display device 17 mainly uses a liquid crystal / fluorescent display tube or the like, and displays, for example, a track number being reproduced, an elapsed time, character information recorded on the TOC under the control of the system controller 15, and the like. The operation device 18 is composed of switches and keys (not shown). For example, after a switch is turned on to enable inputting, a plurality of recordings recorded on the disk 21 are performed by a manual input operation using a keyboard or the like. The reproduction order (readout order) of digital information (hereinafter referred to as a data group) and the like are input to the system controller 15. The system controller 15 controls the above devices and circuits so that a plurality of data groups recorded on the disc 1 are reproduced according to the reproduction order inputted from the operation device 18, and also controls the head drive. Apparatus 1
9 and the recording head 20, the address data in the write area of the disk 1 is rewritten as described later. Next, the recording operation will be described. The input terminal 22 is connected to an input unit (not shown) having a microphone or the like, and the input amplifier 21 amplifies an analog signal input from the input terminal 22. The A / D converter 8b converts the analog information amplified by the input amplifier 21 into digital information and transfers the digital information to the data compression / expansion circuit 7. The data compression / expansion circuit 7 compresses the time axis of the digital information output from the A / D converter 8b to a predetermined compression ratio, for example, 1/5, and transfers the compressed data to the memory controller 5. The memory controller 5 transfers the digital information output from the data compression / decompression circuit 7 to the shock proof memory 6 and also converts the digital information output from the shock proof memory 6 into a signal processing circuit 4.
To be forwarded to. Therefore, the shock proof memory 6 also aims to absorb the difference between the transfer speed of the digital information output from the data compression / expansion circuit 7 and the transfer speed of the digital information input to the signal processing circuit 4. The signal processing circuit 4 includes a memory controller 5
The digital information output from is converted into an RF signal by modulation, and is transferred to a head driving device. The head driving device 19 outputs the R output from the signal processing circuit 4.
The F signal is transferred to the recording head 20, and the recording head 20 transmits an RF signal to a target recording track of the disc 1.
The recording head 20 is moved in a direction perpendicular to the recording tracks of the disk 1 so that the signal recording is performed accurately. The recording head 20 records an RF signal in a recording area of the disk 1. Also,
The recording head 20 records the reproduction order of the data group in the write area of the disk 1. In the above configuration, at the time of reproduction, an RF signal is read from the disk 1 by the optical pickup 2. The RF signal is amplified by the RF amplifier 3, demodulated by the signal processing circuit 4 and subjected to predetermined signal processing, restored as digital information, and sent to the memory controller 5. At this time, the digital information is data that has been compressed on the time axis. On the other hand, the RF signal amplified by the RF amplifier 3 is also sent to the servo control circuit 14 as a servo control signal used for feedback control. Servo control circuit 1
4 determines a control amount in accordance with an instruction of the system controller 15 based on the servo control signal, and outputs a control signal to the driver circuit 13. As a result, the driver circuit 13 operates the feed motor 12, the spindle motor 11, and the objective lens driving device of the optical pickup 2 according to the magnitude of the control signal. As a result, the optical pickup 2 is sent to the target recording track, the rotation speed of the disk 1 is controlled to a predetermined value, and the position of the objective lens (not shown) is driven so as to accurately follow the recording track. . The digital information sent to the memory controller 5 by the signal processing circuit 4 is written to the shock proof memory 6 and temporarily stored, and is read out to the memory controller 5 in the order of writing. Then, the digital information output from the memory controller 5 is sent to the data compression / expansion circuit 7, where it is expanded on the time axis. The digital information that has passed through the data compression / expansion circuit 7 is converted into original analog information by a D / A converter 8a, amplified by an output amplifier 9, and then output from a speaker 10 as an audio signal. At the time of recording, analog data is input to the input terminal 22, amplified by the input amplifier 21, and then sent to the A / D converter 8b as analog information. The analog information is converted into digital information by an A / D converter 8b and then sent to a data compression / decompression circuit 7, where it is time-axis compressed at a predetermined compression rate.
The data is sent to the memory controller 5, temporarily stored in the shock proof memory 5, and read out to the memory controller 5 in the order of writing. The digital information sent to the memory controller 5 is subjected to modulation and predetermined signal processing by the signal processing circuit 4 to be converted into an RF signal.
Is recorded on the recording area of the disk 1 by interaction with the light from the optical pickup 2 which is sent to the recording head 20 via the optical disc 2. Next, a disk used in the MD device having the above configuration will be described. The disc 1 has a lead-in area in which disc control information and the like are recorded in order from the inner circumference side to the outer circumference side, and a user writes information for designating a reproduction order of a plurality of recorded data groups. User TOC (Table Of Content)
ts) area and a recording area for recording a plurality of individually completed data groups. In the user TOC area, a plurality of individually completed data groups in the format shown in FIG. 2, for example, a reproduction order of a plurality of music programs (hereinafter referred to as music) are recorded. In the figure, the track number T
NO. n (where n = 1, 2,...) is an area indicating the position where the address data A, B,.
In the address data A, B,..., Values indicating the first address and the last address of the recording position of the n-th song in the recording area (hereinafter, referred to as a start address SA and an end address EA, respectively) are written. Note that the track number TNO. 1 corresponds to the address data A. Hereinafter, the track number TNO. 2, TNO.
.. Correspond to address data B, C,. (Embodiment 1) An embodiment in which the recording / reproducing apparatus of Embodiment 1 is applied to the MD apparatus configured as described above will be described with reference to FIGS. 5 to 7 based on the flowchart of FIG. I do.
In this embodiment, the user TOC area of the disk shown in FIG. 5A and the user TOC area of the disk shown in FIG.
The TNO. Of the MD recorded as the address of the C area. 3,
TNO. 5, TNO. 6 is deleted from the TOC information,
This is an example of securing an unrecorded area. First, in the program input process of step n1, the tune number TNO. Of the tune to be erased by the program input operation at the time of program reproduction, which is a known method. 3, TNO.
5, TNO. Set 6. Step n2 is a process for determining transition to the erasing mode, and when there is an erasing key input,
The mode is set to the erase mode, and the process proceeds to step n3. Step n3 is a process for judging whether or not the tune to be erased set in the program input process of step n1 is to be reproduced and confirmed. If it is to be reproduced and confirmed, the process proceeds to step n4. In step n4, step n
TN of tune to be erased set in program input process 1
O. Play 3 Then, at step n5, the TNO. 3 to delete, enter the delete key and
NO. 3 is determined to be erased. The TNO. If the third key is not to be deleted, a cancel key is input in step n7. TNO. When the erasure is confirmed or the erasure is canceled, the process proceeds to step n8, where the next tune TN
O. 5 is reproduced. TNO. 5, TNO. For TNO.6, from step n9 to step n14, the TNO. The same processing as in step 3 is performed, and the routine goes to step n19. In step n15, a cancel key is input, and the TNO.
If the erasure of step No. 6 has been canceled, the process proceeds to step n16, where the presence or absence of a song whose erasure is confirmed is confirmed. Also, in step n3, the tune to be erased is played back and not checked,
If there is an input of the erase key in step 7, all songs to be erased are determined to be erased in step n18, and the process proceeds to step n19. In step n19, as shown in FIG.
TNO before erasing and TN when erasing the confirmed track
O is displayed at the same time, and the TNO after erasing can be confirmed. Next, during the TNO display, confirmation of erasure is performed again, and if a cancel key is input in step n22, the process proceeds to step n23 without executing erasure, and the erase mode is ended. When erasing is to be performed with the contents of the TNO display, the erase key is input in step n20, and the process shifts to step n21, where the songs for which erasure has been confirmed are collectively erased from the TOC, and FIG. ) And an unrecorded area is secured as shown in FIG. 6B, and the process proceeds to step n23 to end the erasing mode. (Embodiment 2) An embodiment in which the recording / reproducing apparatus of Embodiment 2 is applied to the MD apparatus configured as described above will be described with reference to FIGS. 5 to 7 in accordance with the flowchart of FIG. explain.
This embodiment is similar to the first embodiment shown in FIG.
The MD TNO. Recorded as the address of the user TOC area of the disc shown in FIG. 6A and the user TOC area of the disc shown in FIG. 3, TNO. 5, TNO. 6 TO
This is an example in which an unrecorded area is secured by erasing from C information. First, at step n1, a number m = 1 for reproducing from the first music piece is set, and the routine goes to step n2. In step n2, the TNO. Play m songs. At step n3 and step n4, the TNO.
m is determined as a deletion target, and if it is determined to be a deletion target, an erasure key is input in step n3, and the process proceeds to step n5 where the TNO. The music piece m is set as an erasure target, and the process proceeds to step n6. If the tune being reproduced is not to be erased, a cancel key is input in step n4, and the flow advances to step n6. At steps n6 and n7, the next TNO. Is set, and the process proceeds to step n2 to execute the same processing as TNO. 1 to TNO. The music on the MD is reproduced and the music to be deleted is set. When m> 8 in step n7 and the setting of all the music pieces on the MD is completed, the process proceeds to step n8.
In step n8, as shown in FIG.
And the TNO at the time of erasing the song to be erased are displayed at the same time,
The TNO after the erasure can be confirmed. Next, at step n9, confirmation of erasure is made again during the above TNO display, and if the cancel key is entered at step n10 without inputting the erasure key, the process proceeds to step n12 without executing the erasure and erases. Exit the mode. When erasing is performed with the contents of the above TNO display, step n
By inputting the erase key at step 9, the program goes to step n11
Then, the songs to be erased are collectively erased from the TOC, and as shown in FIGS. 5B and 6B, the track numbers RA1, RA2, RA3 and the address number 36 are used.
Unrecorded areas of ~ 45, 61-70, 71-75 are secured, and the routine goes to step n12 to end the erase mode. As described above, in the MD apparatus, when a plurality of songs are to be erased, the songs to be erased are set in advance, and the songs to be erased are reproduced or displayed and confirmed before being erased collectively. Therefore, it is possible to reliably erase only the music that the user wants to erase without repeating the erase operation many times. As described above, according to the recording / reproducing apparatus of the first aspect, a plurality of data groups to be erased from a plurality of data groups recorded on a recording medium are set by the setting means. The plurality of data groups to be erased, which are set arbitrarily and set by the setting means, are sequentially reproduced by the reproducing means and reproduced.
That the data group after clearing determined by erasing determination means, sure
Based on the specified data groups to be erased, the TO
C information is displayed by the display means and then by the release means
Unless the execution of the erasure is canceled, a plurality of data groups to be erased are collectively erased by the control means, the TOC information is recorded, and an unrecorded area is secured. Therefore, the contents of the data group to be erased before erasing can be first confirmed by reproduction, and updated.
Since it re-confirmed by displaying the TOC information after erasure can be erased securely erased want data group. When a plurality of arbitrarily set data groups to be erased are reproduced and there is a data group which is not desired to be erased, if this data group is not determined to be erased,
Only the data group that you really want to erase among the multiple data groups that you want to erase can be erased collectively.
Erroneous erasure can be reliably prevented. [0057]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a schematic configuration of an MD device as a recording / reproducing device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of a user TOC area of a disk used in the MD device of FIG. 1; FIG. 3 is a flowchart showing an operation of the MD device in FIG. 1 according to the first embodiment; FIG. 4 is a flowchart showing an operation of the MD device in FIG. 1 according to the second embodiment; FIG. 5 is a diagram showing a user TO of a disk by the MD device of FIG. 1;
FIG. 9 is an explanatory diagram showing how a C area is rewritten. 6 is a diagram showing a user TO of a disk by the MD device shown in FIG. 1;
FIG. 4 is an explanatory diagram showing a state where an address in a C area becomes a recordable area. FIG. 7 is a display example of displaying the TNO at the time of erasing by the MD device in FIG. 1; [Description of Signs] 1 Disc (recording medium) 2 Optical pickup 3 RF amplifier 4 Encoder / decoder / signal processing circuit 5 Memory controller 6 Shockproof memory 7 Data expansion / compression circuit 8 Converter 9 Output amplifier 10 Speaker 11 Spindle motor 12 Feed Motor 13 driver circuit 14 servo control circuit 15 system controller (control means) 16 power supply circuit 17 display device (display means) 18 operating device (input means, setting means) 19 head drive device 20 recording head 21 input amplifier 22 input terminal

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Claims (1)

(57) [Claims] [Claim 1] An area for recording data and a TOC (Tabl)
e of Contents) An optical pickup for reading data and TOC information from a recording medium having an area for recording information, and an optical pickup for reading data and TOC information from the recording medium.
A recording head for recording OC information, and a TO of the recording medium
A recording / reproducing apparatus comprising: display / editing means for displaying and editing C information; and control means for controlling the pickup, the recording head, and the display / editing means, wherein a plurality of data groups recorded on the recording medium are provided. Setting means capable of arbitrarily setting a plurality of data groups to be erased from, a reproducing means for sequentially reproducing the plurality of data groups to be erased set by the setting means, and a data group reproduced by the reproducing means Erasing confirmation means for confirming erasure, display means for displaying TOC information after erasure based on a plurality of data groups to be erased decided by the erasing confirmation means, and cancellation means for canceling execution of erasing. A plurality of data groups to be erased, which are set and confirmed by the control means, are collectively erased unless the execution of the erasure is canceled after being displayed, and the TOC information is recorded. Recording and reproducing apparatus is characterized in that so as to ensure an unrecorded area.