JP2001006326A - Information processor and editing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cancel edit processing to character information and reinstate the former state. SOLUTION: This device is provided with a disk deck 30 having a buffer for recording and/or reproducing on/from a disk 1 recording programs and character information thereon, and storing this character information, and a personal computer 60 for editing the character information by sending a command to the disk deck 30 based on the input to a 1st key means 66 and a mouse 67. Here, the personal computer 60 has a restoring command for canceling the edit operation and restoring it to the original sate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus for performing information processing relating to recording / reproduction on a digital recording medium such as a magneto-optical disk, and an editing method for editing the digital recording medium.

[0002]

2. Description of the Related Art Conventionally, a magneto-optical disk drive for recording and reproducing a program such as music on a magneto-optical disk such as an MD (mini disk, trade name of Sony Corporation) is known. A so-called U-TOC (user table of content) area for managing the recording position, recording date and time, and title name of the recorded program is formed on the inner periphery of such a magneto-optical disk. The U-TOC area has a page structure, and has a plurality of sectors. Hereinafter, an example of the configuration of such a U-TOC area will be described.

[0003] The U-TOC area is composed of, for example, 36 sectors. Among them, the sector 0 mainly manages the start address and end address of the already recorded program, and manages the start address and end address of the recordable area. The sector 1 mainly manages a title name corresponding to a recorded program and a title name unique to a magneto-optical disk. Mainly in the case of audio use, the title name corresponding to the program is a song name, and the title name unique to the magneto-optical disk is equivalent to an album name or a player name.

[0004] The sector 2 manages the recording date and time corresponding to the recorded program. Sector 4 manages kanji, hiragana, and katakana, whereas sector 1 manages alphabetic title names.

Prior to reproducing a program recorded on a magneto-optical disk, the above-described U-TOC area is reproduced, and various reproduced information is associated with each program and stored in a predetermined memory such as a DRAM in the apparatus. In the storage means. When a desired program is reproduced, the corresponding title is read from the memory and displayed on the display unit.

The above-described conventional magneto-optical disk drive can be controlled by an application program executed on the personal computer by connecting the personal computer, for example. Such an application program is provided with an editor function for editing in order to set character information such as a title name and an artist name corresponding to the program as U-TOC information.

[0007] This editor has a function of rewriting or deleting character information of a title name or an artist name, or moving to a portion corresponding to another program. Such an editor allows the user to
-Character information for setting as TOC information can be efficiently edited.

[0008]

However, in a magneto-optical disk drive, for example, when editing text information such as a title name or an artist name using an editor to set it as U-TOC information, editing is performed. There are times when you want to cancel the process and restore the character information to its original state. For example, when necessary character information is accidentally deleted or the policy is changed during editing, it is convenient if the input processing can be canceled, restored to the original state, and redone.

The above-described conventional magneto-optical disk has no editor having a function of canceling the input processing and restoring the original state of the character information. For this reason, when the user edits character information to set it as U-TOC information using an editor, if the user wants to cancel the editing process and restore the original state of the character information, Has to be re-input, and the burden on the user is heavy.

The present invention has been proposed in view of the above circumstances, and an information processing apparatus for canceling editing of character information on a disc and restoring the character information to an original state, and an editing process. It is an object of the present invention to provide an editing method in which the character information is restored and the character information is restored to the original state.

[0011]

In order to solve the above-mentioned problems, an information processing apparatus according to the present invention comprises a recording area for recording a program as main information and a management area for managing character information corresponding to the program. Recording and / or reproducing means for performing recording and / or reproduction on a recording medium having: a buffer for storing the character information; input means for inputting character information; and character information input to the input means Edits the character information stored in the buffer by sending a command based on the command to the recording and / or reproducing means via a predetermined transmission path. The editing process for the character information is canceled to restore the original state. Editing means having a restore command.

An editing method according to the present invention is an editing method for editing character information on a recording medium having a recording area for recording a program as main information and a management area for managing character information corresponding to the program, The character information is stored in a buffer, the character information is input, and the stored character information is edited by sending a command based on the input character information through a predetermined transmission path, and a restoration command is transmitted to the transmission path. The original state is restored by canceling the editing process for the character information by sending the character information.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of an information processing apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the information processing apparatus records a personal computer 60 for performing information processing and, for example, an MD (mini-disc, a product name of Sony Corporation) in response to a command given from the personal computer 60. And / or a disc deck 30 which is a recording and / or reproducing means for performing reproduction. In the present embodiment, the personal computer 60 and the disk deck 30 are connected by a transmission path of a so-called IEEE 1394 standard serial interface.

The disk 1 is assumed to be a so-called MD (mini disk), which is a magneto-optical disk on which data is recorded and reproduced by magneto-magnetism. The disk 1 is a management area in which character information such as a title name and an artist name related to the program is recorded in addition to a main program area in which the program is recorded.
It has a TOC (user table of content) area.

The personal computer 60 edits the character information recorded in the U-TOC area of the disk 1 by sending a command to the disk deck 30. The disc deck 30 stores the character information of the U-TOC area and processes the character information according to a command sent from the personal computer 60.

The personal computer 60 cancels the editing process on the U-TOC character information by sending an undo command to the disc deck 30 to cancel the previous editing process on the character information and restore the original editing process. Can be restored. Disc deck 3
At 0, the editing process is canceled for the stored character information of the U-TOC area in response to the undo command.

The structure of such an information processing apparatus including the personal computer 60 and the disc deck 30 will be described. A personal computer 60 of this information processing apparatus is a small, stand-alone personal use type (stand-alone) that executes information processing based on a processing program.
one) It is a computer. In the present embodiment,
The personal computer 60 controls music selection, recording, reproduction, and the like for the program of the disk 1 mounted on the disk deck 30, and also executes a GUI (graphic user int.) Of character information recorded in the U-TOC area of the disk 1.
erface).

The personal computer 60 has a central processing unit (central processing unit) for executing information processing based on a processing program.
ral processing unit (CPU) 62 and a main display 68 for displaying characters and images;
It has a first key unit 66 for inputting character information and the like by a key, and a mouse 67 for inputting position information.

The main body 68 includes, in addition to the CPU 62, a ROM (read only memory) 63 which is a non-volatile memory,
RAM (random access memory), a volatile memory
64 and a first interface (I / F) 61 for communicating with the disk deck 30. The CPU 62, the ROM 63, the RAM 64, and the first interface 61 are connected to each other via an internal bus, and can mutually transmit and receive parallel data.

The first display section 65 is a display device for displaying characters and images, for example, a cathode ray tube (cathode ray tub).
e; CRT). The first key section 66
This is an input device for inputting characters and symbols by keys. For example, a keyboard can be used.

CPU 62 of personal computer 60
Executes information processing on the disk deck 30 based on a processing program stored in the ROM 63 or the RAM 64. Specifically, the CPU 62 controls the first display unit 6
With reference to the GUI displayed on the display 5, operations such as music selection, reproduction, and recording are performed on the disc 1 in the disc deck 30 in accordance with the input made to the first key section 66 and the mouse 67. Then, a command is sent to the system controller 11 of the disc deck 30.

In addition, the CPU 62 displays information on the disc deck 30 on the display unit 65 according to the processing program.
Control is performed so as to be displayed on the UI. For example, time information such as the reproduction time of the disc 1, the elapsed time of the program being reproduced, the remaining reproduction time of the program being reproduced, the remaining reproduction time during the reproduction time, and the track information of the program being reproduced are displayed. You.

When the disc 1 records a disc name, a track name, a program name, etc., such information is also displayed. These pieces of information are stored in a P-TOC (premastered table of con-
tent) and U-TOC for recording character information by the user
Etc. in a predetermined recording area.

Here, G displayed on the first display section 65
A specific example of the UI will be described with reference to FIG. By using this GUI, it is possible to control operations such as recording and reproduction with respect to the disc 1 mounted on the disc deck 30, and to edit character information recorded in the U-TOC area of the disc 1.

This GUI is a personal computer 6
0 is displayed as the GUI window 50 on the first display unit 65. The GUI window 50 is displayed on the first display unit 65 when an application program for performing information processing on the disc deck 30 is started.

The window 50 of the GUI is provided with a state of the disk 1 mounted on the disk deck 30 and various buttons for operating the disk 1. Also, in this window 50, the U-
An editor for editing character information recorded in the TOC area is also displayed.

That is, the GUI window 50 has a status display section 51 which indicates the reproduction time of the program recorded on the disc 1 and the current state of the disc 1. The window 50 is used to turn on / off the disc deck 30 as various buttons for operating the disc 1.
An on / off button 52 for turning off the disc deck 30
And an eject button 53 for ejecting (discharging) the disc 1 (that is, the cartridge holding the disc 1). In addition, this window 50
Has a play button, a pause button, a stop button, and a record button as operation buttons 54 for operating the disk 1. These buttons are selected based on the position information input by the mouse 67.

The GUI window 50 includes a disc editing unit 70 as an editor for editing character information recorded in the U-TOC area of the disc 1.
The disc editing unit 70 has functions necessary for editing character information, such as input of character information, so-called cut-and-paste processing, for each program (that is, for audio information).

The disk editing unit 70 stores the P
Character information recorded in the -TOC area or U-TOC area is displayed. That is, in the disc editing unit 70, the reproduction time of the program of the disc 1 to be edited and the current state of the disc 1 are displayed on the disc display unit 71.
The track names of the programs on the disc 1 are displayed on the program display section 72, respectively.

On the disc display section 71, the title name of the disc 1 to be edited is displayed in two rows in katakana and kanji. That is, "Ongaku" and "Music" are displayed as title names. Also, the disc display unit 71
Shows the playback time of the program recorded on the disk 1.

The program display section 72 displays the track number and the track name of the program recorded on the disk 1. The track name is displayed in two rows in katakana and kanji. For example, for the track number “002”, “Gakki 1” and “Song 1” are displayed as track names. The program display section 72 also displays the playback time of each track.

The title name of the disc display section 71 and the track name of the program display section 72 displayed in two rows are as follows.
One corresponds to sector 1 of the U-TOC and the other corresponds to sector 4 of the U-TOC. As will be described later, in the present embodiment, katakana is in sector 1 of U-TOC and kanji is in U-TOC.
It corresponds to the sector 4 of the TOC.

The display form in katakana and kanji is displayed as "kana / kanji" on the display form display section 57. This display mode is not limited to katakana and kanji, and hiragana, symbols, uppercase alphanumeric characters, codes, and lowercase alphanumeric characters can be selected in place of katakana. The selected character form is displayed in the character form display section 57.
Are displayed as 'Kana / Kanji', 'Kana / Kanji', 'Symbol / Kanji', 'Large number / Kanji', 'Code / Kanji', and 'Low number / Kanji'.

The disc display section 61 of the disc editing section 70
And the character information displayed on the program display section 72 are:
Editing processing is performed using the first key section 66 and the mouse 67. That is, the title name displayed on the disc display section 71 and the track name displayed on the program display section 72 are edited by character input, cut and paste processing, or the like. The undo button 55 is for canceling the editing process of the character information in the disc deck 30 and restoring the original state, and is enabled when the undo process is possible in the disc deck 30 (enabl).
e) will be displayed.

The disk editing unit 70 has an undo button 55 for canceling the immediately preceding editing process and restoring the original character information when editing the character information.

When the undo button 55 is selected, the previous editing process is canceled and the previous state is restored. Therefore, by repeatedly selecting the undo button 55, the editing process is traced back by a desired step, and the state is restored. As described below,
The restoration of character information by the undo button 55 is performed by sending a command from the personal computer 60 to the disc deck 30.

In the information processing apparatus of the present embodiment,
Since the undo button 55 is provided, it is not necessary to restart the editing process from the beginning even when the editing process is erroneous or the editing policy is changed in the middle. By selecting the undo button 55, the user can sequentially cancel the immediately preceding editing process, go back the editing process by a desired step, and resume the editing process from that point. By using such an undo button 55, the efficiency of editing character information set in the U-TOC area of the disc 1 is improved.

The GUI window 50 has a delete button 56 for deleting unnecessary programs. The unnecessary program is selected by the disc editing unit 70 based on, for example, the position information input to the mouse 67, and is deleted by further selecting the delete button 56.

The disk deck 30 is a type of magneto-optical disk device that records information on the disk 1 and reproduces information from the disk 1. The disc deck 30 operates according to the command sent from the personal computer 60. For example, editing processing is performed on the character information in the management area of the disk 1.

The disk 1 is housed in a cartridge having a shutter mechanism. By opening and closing such a shutter mechanism during recording or reproduction, it is possible to irradiate the disk 1 with light from the optical head 3 or to apply a magnetic field from the magnetic head 6. When the disc 1 is mounted on the disc deck 30 at the time of recording / reproduction or the like, the disc 1 is rotated at a constant linear velocity (constant speed) by the spindle motor 2.
The rotation is controlled to nt linear velocity (CLV). The optical head 3 is located at a position facing each other with the disc 1 interposed therebetween.
And a magnetic head 6. Further, a sled motor 5 for moving the entire optical head 3 largely in the radial direction of the disk 1 is provided.

The optical head 3 comprises an objective lens 3a, a two-axis mechanism 4, a semiconductor laser (not shown) and a light receiving section. The laser light intensity emitted by the semiconductor laser is switched between recording and reproduction. The light receiving section is usually composed of a plurality of areas, and the light emitted from the semiconductor laser
The detection signal is generated for each area by receiving the reflected light reflected by the. The reflected light changes its plane of polarization according to the recorded information due to the magnetic Kerr effect, and the light receiving unit detects a magnetic field vector based on the change of the plane of polarization and detects a detection signal based on the detected magnetic field vector. Generate Further, the biaxial mechanism 4 connects the objective lens 3a to the disc 1
And a tracking coil for driving the objective lens 3a in the radial direction of the disk 1.

The configuration and operation of the data reproduction system, servo system, and the like relating to the processing based on the reproduction signal will be described below. The above-described detection signal generated by the light receiving unit in the optical head 3 is supplied to the RF amplifier 7. The RF amplifier 7 generates a focus error signal FE, a tracking error signal TE, an RF signal, and a spindle error signal based on the detection signal. Among them, the focus error signal FE and the tracking error signal TE are supplied to the servo circuit 9. Also, if the RF signal is an EFM / CIRC encoder
It is supplied to the decoder 8 and the address decoder 10. Further, the spindle error signal is supplied to the system controller 11.

The servo circuit 9 performs phase compensation and gain adjustment on the signal supplied from the RF amplifier 7. The output of the servo circuit 9 is supplied to a focusing coil and a tracking coil in the two-axis mechanism 4 via a drive amplifier (not shown).

Further, the servo circuit 9 includes an LP (not shown).
It has an F (low pass filter), and a tracking error signal TE is supplied to this LPF. Then, a sled error signal is generated based on the output of the LPF, and is supplied to the sled motor 5 via a sled drive amplifier (not shown). The thread motor 5 performs an operation according to the thread error signal.

On the other hand, the EFM / CIRC encoder / decoder 8 performs the following processing based on the RF signal supplied from the RF amplifier 7. First, the RF signal is binarized and subjected to EFM demodulation. Here, the EFM demodulation is
EFM modulation (eight to fourt) applied to recorded data
een modulation). The signal obtained by the EFM demodulation further includes a CIRC (cross interleave r), which is an encoding applied to recording information.
Error correction processing based on eed-solomon coding) is performed.

The EFM / CIRC encoder / decoder 8 generates a spindle error signal for controlling the rotation of the disk 1 based on the binarized signal based on the RF signal or the address data extracted by the address decoder 10. Then, the data is supplied to the system controller 11. The system controller 11 controls the spindle motor 2 based on the spindle error signal. Further, the RFM / CIRC encoder / decoder 8 has a PLL (phas) included therein based on the binarized EFM signal.
e Locking operation of the locked loop is controlled.

EFM / CIRC encoder / decoder 8
Is supplied to the memory controller 12. As will be described later, the memory controller 12 controls the EFM /
The output signal of the CIRC encoder / decoder 8 is stored in a memory R
The signal is written to the AM 13 and the signal written from the memory RAM 13 is read.

The RAM 13 has a function as a buffer for holding character information recorded in the U-TOC area of the management area of the disk 1. The editing process for the character information performed on the GUI of the personal computer 60 is executed in the buffer in the RAM 13. The character information that has been edited in the RAM 13 is collectively recorded on the disk 1 at a predetermined timing as described later. For example, a part of the RAM 13 is used as such a buffer.

The accumulation of character information in the RAM 13 is performed by the system controller 1 via the memory controller 12.
2 is controlled. The system controller 11
The character information in the RAM 13 is managed based on a command sent from the personal computer 60.
When an undo command is sent from the personal computer 60 to cancel the previous editing process and return to the original state,
The system controller 11 controls to restore the character information stored in the RAM 13 to the original state.

The signal read from the memory RAM 13 is supplied to an audio compression / decompression encoder / decoder 14. Audio compression / decompression encoder / decoder 1
4, for example, ATRA applied to the supplied signal
A process of decompressing by a C (adaptive transform accoustic coding) method or the like is performed. The decompressed signal is D /
It is supplied to the A converter 15. The D / A converter 15 converts the supplied digital data into an analog audio signal. This analog audio signal is supplied to audio output means (not shown) via the audio output terminal 16.

As will be described later, grooves are provided in advance on the disk 1 in a meandering manner at a predetermined frequency such as 22.05 Hz, and address data is recorded by FM modulation. The address data decoder 10 extracts the address data based on the RF signal supplied from the RF amplifier 7. The address data decoder 10 has a band pass filter (BPF) for passing only a predetermined frequency.
er) is provided, and the address data is extracted by FM demodulation through the BPF. The extracted address data is supplied to the EFM / CIRC encoder / decoder 8.

The processing performed by the memory controller 12 will be described in more detail. EFM / CIRC encoder
The output signal of the decoder 8 is written into the memory RAM 13 at a transfer rate of, for example, 1.4 Mbit / sec. When a signal equal to or more than a predetermined amount is stored in the memory RAM 13, the signal is read at a transfer rate of 0.3 Mbit / sec, which is sufficiently lower than the transfer rate at the time of writing. As described above, since the reproduced signal is temporarily stored in the memory and then output as audio data, it is possible to prevent a sound from skipping due to a track jump due to disturbance.

That is, when a track jump occurs due to disturbance such as vibration, for example, a process of rearranging the optical head 3 at the address where the track jump has occurred is performed. During the period required for this processing, the memory RAM 12 performs the processing performed by the memory controller 12 described above.
Audio output is performed based on the signal already written in the block 13. Therefore, even if the reproduction from the disc 1 is interrupted due to the track jump, the audio output can be prevented from being interrupted within a predetermined time. As an example, when a 4-Mbyte RAM is used as the memory RAM 13, data corresponding to audio data output for about 10 seconds is stored with the data in the memory RAM 13 being full. The memory controller 12 is controlled by the system controller 11.

The memory controller 12 manages the character information read from the U-TOC area of the disk 1 and stored in the RAM 13 under the control of the system controller 11 as described above.

Next, the configuration and operation relating to recording will be described below. An analog signal (output from an analog output terminal of a digital reproduction device such as a CD player) is supplied to an A / D converter 18 via an (analog) audio input terminal 17. The A / D converter 18 converts the supplied analog signal into a digital signal and supplies the digital signal to the audio compression / decompression encoder / decoder 14. When a digital signal output from the digital output terminal of the digital reproducing apparatus is input, such a digital signal is input to the audio compression / decompression encoder / decoder 14 via the (digital) input terminal 21.
Should be supplied.

The audio compression / decompression encoder / decoder 14 converts the supplied digital signal into, for example, ATRA
A predetermined compression such as an adaptive transform acoustic coding (C) method is performed. Then, the compressed digital signal is temporarily stored in the memory RAM 13 via the memory controller 12 at a transfer rate of, for example, 0.3 Mbit / sec. The memory controller 12 permits reading from the memory RAM 13 when detecting that a predetermined amount of digital signal has been stored in the memory RAM 13.

The digital signal read from the memory RAM 13 is transmitted to the EFM / CIRC encoder / decoder 8
Supplied to The EFM / CIRC encoder / decoder 8 subjects this digital signal to CIRC encoding for EFM modulation and error correction, and supplies the digital signal to the magnetic head drive circuit 150. The magnetic head drive circuit 150 drives the N pole or the S pole of the magnetic head 6 based on the supplied signal. At the same time, the emission power of the semiconductor laser in the optical head 3 is controlled so as to be higher than that at the time of reproduction, and the surface of the disk 1 is heated to the Curie temperature so that a magnetic field reversal can be caused. Data recording is performed.

The system controller 11 performs various controls related to the above-described operations such as recording / reproduction. As such control, the memory controller 12 operates in the memory RAM.
13, control of signal processing performed using EFM / CIRC
Spindle control based on a spindle error signal supplied from encoder / decoder 8, and EFM / CIR
There are an encoder for the C encoder / decoder 8, a decoder control, and the like.

In addition to such control, in addition to such control, the system controller 11 performs an operation performed by the user via the personal computer 60, the second key unit 19, or a remote operation unit 100 described later. Perform according to. In addition, for example, the second display unit 20 that performs liquid crystal display is controlled to display predetermined information such as character information.
When a disc name, a track name, a program name, and the like are recorded on the disc 1, such information is also displayed on the second display unit 20.

The contents of the operation by the remote control unit 100 are transmitted to the system controller 11 by a predetermined transmission method using, for example, infrared rays. Therefore, the disc deck 30 is provided with a transmission / reception unit 22 for receiving information transmitted from the remote operation unit 100.
The transmission / reception unit 22 also has a function of transmitting information from the main body to the remote operation unit 100.

Here, the information transmitted from the main body is information required by the user, such as the contents of a program recorded in the disk 1 and referred to when performing music selection. Such information is stored in a P-
TOC (premastered table of content) and UT
The data is reproduced from a predetermined recording area such as an OC and supplied to the transmission / reception unit 22 by the system controller 11.

Character information such as a track name of a program to be edited by the disk editing section 70 is recorded in a U-TOC area which is a recording area provided separately from an area for recording a program on the disk 1. As described below,
The U-TOC area is composed of a plurality of sectors, and the title of the program is written in kanji, hiragana, or katakana (that is, the shift JIS is used so that the usable character codes include music external characters).
MSJIS (musicshifted) that extends (shifted JIS)
JIS) and those represented by alphabets and katakana (that is, those whose usable character codes are defined as ISO8859-1) are recorded in separate sectors.

In order to facilitate understanding of the above-mentioned sector structure in the present embodiment, a medium format of, for example, an MD (minidisk, trade name of Sony Corporation) will be described with reference to FIG. explain. The disc 1 has an information film adhered to a polycarbonate substrate, and a clamping plate 41 made of a magnetic material is mounted at the center thereof. The recording film of the information film has a structure in which a dielectric layer, an MO layer, a dielectric layer, a reflective film, and a protective film are sequentially stacked from the substrate side. The read-only film of the information film includes a reflective film and a protective film. The area of the information film other than the clamping plate 41 of the disc 1 is an information area 42.

The innermost side of the information area 42 is a lead-in area 43. A read-only film is attached to the lead-in area 43, and information is recorded in advance in the form of pits. Lead-in area 43
A recordable area 44 on which a recording film is attached is provided outside the disk 1. Further, a lead-out area 45 is provided on the outermost periphery of the disk 1. In addition, recordable area 4
A program area 47 for recording a program outside the program area 4
Is arranged. A U-TOC area 46 for recording a U-TOC is arranged on the inner peripheral side of the recordable area 44, and information about each program recorded in a program area 47 is recorded.

A calibration area 48 is provided between the lead-in area 43 and the U-TOC area 46, that is, at the innermost circumference of the recordable area 44.
A gap area 49 is provided between the U-TOC area 46 and the program area 47. In the calibration area 48 and the gap area 49,
User data is not recorded. The calibration area 48 is provided for adjusting a laser output during recording and the like.

In the lead-in area 43, the P-TOC
Are recorded in advance as pre-pits. The P-TOC records the start address and end address of each song on the disc, the track name as the song name, the disc name as the disc name, and the like.

In order to perform a recording / reproducing operation on the disk 1, it is necessary to read out management information (ie, P-TOC and U-TOC) recorded on the disk 1 in advance. The system controller 11 determines an address of an area to be recorded on the disk 1 and an address of an area to be reproduced on the disk 1 according to the management information. These pieces of management information are read when the disk 1 is mounted,
The data is stored in the RAM 13 and is referred to in a subsequent recording / reproducing operation.

Further, according to the recording or erasing of data, the U-T
The OC is edited and rewritten. The system controller 11 performs this editing process on the U-TOC stored in the above-mentioned predetermined storage means every time a recording / erasing operation is performed. Then, the U-TO updated as a result of the editing process
C is written into the U-TOC area 46 of the disc 1 at a predetermined timing. Such a predetermined timing is, for example, when the ejection of the disk 1 or the control of turning off the power is performed. By managing the U-TOC information in this way, every time rewriting is performed, the U-TOC
Compared with the case where the contents of the C area 46 are re-recorded, the time spent for recording in the U-TOC area 46 is reduced, and the performance of the entire apparatus can be improved. However, every time rewriting is performed, the U-
The contents of the TOC area 46 may be recorded again.

In order to facilitate understanding of information managed in the U-TOC, a data format in the program area 47 will be described below. Data recording / reproduction is performed in cluster units. 1
The cluster is composed of, for example, 36 sectors. One sector is composed of, for example, 2352 bytes.
In addition, of the 36 sectors constituting one cluster, three sectors are linking sectors and one sector is a sub data sector. Further, main data is recorded in another 32 sectors.

Incidentally, the interleave length of CIRC in an example of the data format of the disk is one sector length (for example, 13.3 m) in a format generally used in CDs or the like when performing error correction processing.
sec), the length is set longer. Therefore, the above-mentioned linking sector is provided in order to provide compatibility of the reproducing system, that is, a function of reproducing both the CD and the disk by the same reproducing system. Therefore, no useful information is recorded in the linking sector. On the other hand, the sub data sector is an extended area, and no information is recorded at this stage.

Two sectors are defined as one unit with respect to the above-mentioned sector, and this one unit is divided into, for example, 11 sound groups. One sound group is composed of, for example, 424 bytes, and each is composed of left and right channel data. The entire 11 sound groups are referred to as one sound frame.

The U-TOC is catalog information for managing each program recorded in the program area 47 as described above. The U-TOC area 46 where the U-TOC is recorded will be described. The U-TOC area 46 is composed of, for example, 32 sectors. Hereinafter, sector 0, sector 1, sector 2, and sector 4 will be described. Sector 3 and sector 5 to sector 32 are extended areas and are not used at this stage.

First, in sector 0, the starting address of each program recorded in program area 47,
An end point address, copy protection information, emphasis information, and the like are managed. FIG. 5 shows a configuration example of the sector 0. The sector 0 and sectors 1, 2, and 4 to be described later each have a size of 2352 bytes, and have a configuration in which 588 4-byte slot units are arranged. Numbers 0 to 587 are assigned to distinguish these 4-byte slot units. Following the header portion, clusters H and L indicating predetermined address positions, maker code and model code indicating the manufacturer and model of the disk
code), Fir indicating the first and last program numbers
stTNO and LastTNO, sector usage status (us
ed sectors), disk serial number (disc serial n)
o.) and a disk ID and the like are sequentially recorded.

A P-DF indicating the head position of a slot for storing information on the position of a defect that has occurred on the disk 1
A (pointer for defective area), P-EMPTY (pointer for empty slot) indicating the usage status of the slot,
Set the start position of the slot for managing the recordable area to P-FR
A (pointer for freely area) and P-TNO indicating the start position of the slot corresponding to each program number
1, P-TNO2,..., P-TNO255 are recorded.

In the numbers 78 to 587, 255 slots for storing information relating to the position of a defect occurring on the disk are provided. Each slot is composed of 4 bytes, and one slot manages a start address, an end address, a track mode, and link information.

The disc deck 30 to which the present invention can be applied does not necessarily need to sequentially record data on the disc 1 as a recording medium, and correctly reproduces data discretely recorded on the recording medium. It is also possible. The processing for this will be described below. First, as described above, since the data is temporarily stored in the memory RAM 13 and the writing rate to the memory RAM 13 is set higher than the reading rate from the memory RAM 13, the following data processing is performed in the reproducing system. It becomes possible.

The reproduction data generated by the EFM / CIRC encoder / decoder 8 based on the reproduction signal obtained by sequentially accessing the data discretely recorded on the disk by the optical head 3 is stored in the memory RAM 13. Then, in reading from the memory RAM 13, the data is rearranged into a sequential form and output to the audio compression / decompression encoder / decoder 14 at the subsequent stage.

In addition to the above data processing, the processing performed by referring to the P-FRA in the sector 0 of the U-TOC in order to correctly connect the discretely recorded data will be described. FIG. 6 shows that P-FRA
This is an example showing a case where 3h (h means hexadecimal) is recorded. In this case, first,
As shown in FIG. 6A, the slot 03h is accessed.
The start address and end address data recorded in the slot 03h indicate the start address and end address of one part recorded on the disk.

The link information recorded in the slot 03h indicates the address of the slot to be followed. In FIG. 6A, such an address is 18h. Therefore, the slot 18h is accessed as shown in FIG. 6B. Since the link information recorded in the slot 18h indicates that the address of the slot to be followed is 1Fh (FIG. 6B), the slot 1Fh is further accessed (FIG. 6C). Then, slot 2Bh is accessed according to the link information of slot 1Fh (FIG. 6).
D) Further, the slot E3h is accessed according to the link information of the slot 2Bh (FIG. 6E). In this way, null (that is, 00) is used as link information.
Follow the link information one after another until h) appears.

By following the link information in this manner, the addresses of data discretely recorded on the disk 1 are sequentially recognized. By controlling the optical head 3 and accessing these addresses on the disk 1 in order, it is possible to connect discretely recorded data at the time of reading from the memory RAM 13.

The above description relates to the process of integrating discretely recorded data with reference to the P-FRA. However, P-DFA, P-EMPTY, P-TNO
1, P-TNO2... P-TNO255 can similarly integrate discretely recorded data.

Next, in the sector 1 of the U-TOC area 46, the title of each program recorded in the program area 47 and the title of the entire disc 1 are managed. Here, the title of the entire disc 1 is information such as an album title and a player name when the program to be recorded is audio data, and the title of each program corresponds to a song name and the like. FIG. 7 shows an example of the configuration of the U-TOC sector 1.

[0084] character information of each program, the corresponding table instruction data P-TNA _X (X is 1 to 255) is recorded in the character table of the slot indicated by, if the number of characters is large, the link information Are used to connect a plurality of slots for recording. Also, this U
In the TOC sector 1, usable character codes are defined, so that mainly the titles of alphabets input in English are managed. However, when a katakana input is posted by the user, a special code "@" is automatically generated, and is managed in the sector 1 around alphabetical characters. In such a case, the alphabet surrounded by the special code "@" is converted into katakana based on the conversion table and displayed. According to the conversion table, for example, the character {a} is converted to katakana.

FIG. 8 shows an example of the sector 2. The sector 2 manages the recording date and time of each program recorded in the program area 47. FIG. 9 shows an example of the sector 4. The title of each program recorded in the program area 47 can be written in kanji, hiragana, or katakana by using a character code specified to be used in the sector 4.

Next, information processing performed by the personal computer 60 on the disc deck 30 will be described with reference to FIG.
This will be described with reference to the flowchart shown in FIG. In the present embodiment, as the information processing in the personal computer 60, it is assumed that editing processing of character information recorded in the U-TOC area of the disk 1 mounted on the disk deck 30 is performed. The editing process is performed by the CPU 62 executing a processing program stored in the RAM 64 or the ROM 63 of the personal computer 60.

The processing program for editing the character information is provided as an application program executed on the basic software of the personal computer 60. When the personal computer 60 has a multitask environment in which a plurality of tasks can be executed, an application program for editing character information can be executed in parallel with other programs.

An application program for editing character information is indicated by, for example, an icon as shown in FIG. 11 on the first display section 65 of the personal computer 61, for example. The application program is
The icon is activated by selecting such an icon based on the position information input to the mouse 67.

In step S 11, the application program for editing the character information is activated by selecting the icon displayed on the first display section 65 with the mouse 67. As a result, an icon of a launcher indicating the disc deck 30 connected to the personal computer 60 as shown in FIG. 12 is displayed on the first display section 65.

In step S12, the editor is activated by selecting the icon indicating the launcher of the disc deck 30 with the mouse 67. That is, an editor such as the one shown in the disk editing unit 70 of the GUI window 50 shown in FIG. 3 is used for editing character information recorded in the U-TOC area of the disk 1 mounted on the disk deck 30. It is displayed on the display unit 65. Editing processing of character information is performed using this editor.

At the time of editing the character information, the personal computer 60 requests status information from the disc deck 30 every about 50 msec, for example. The status information includes the undo status indicating that undo processing is possible and the undo status indicating that undo processing is not possible. get. If the undo process is possible, the undo button 55 of the disc editing unit 70 is displayed as enabled.

In step S13, the undo button 55 in the disc editing unit 50 is selected in order to cancel the immediately preceding editing process and restore the original character information.

In step S14, step S1
In response to the undo button being selected in step 3,
A dialog requesting confirmation of the undo process is displayed on the first display section 65. As shown in FIG. 13, for example, the dialog for asking for confirmation of the undo includes a sentence "Restore the input title?", An "OK" button for asking an answer to this sentence, and a "cancel" button. "Button is displayed.

When the "OK" button is selected, the undo process is continued. When the "cancel" button is selected, the processing for the undo is interrupted.

In step S15, step S1
The undo process is continued from step 4. This step S1
5, the CPU 6 of the personal computer 60
2 sends an undo command to the disc deck 30 via the first interface 61.

As described above, the disc deck 30
The character information of the U-TOC area of the disc 1 is stored in the RAM 13
Is stored as a buffer. Disc deck 30
In, based on the undo command sent from the personal computer 60, the system controller 11 performs processing to cancel the last editing process and restore the original character information. Such restoration of the character information is performed on the RAM 13 that stores the character information in the disk deck 30.

In the present embodiment, the personal computer 60 and the disc deck 30 have an IEEE connection.
Communication is performed according to the E1394 standard. That is, control of the disc deck 30 by the GUI displayed on the first display unit 65 of the personal computer 60,
U-TO of the disc 1 mounted on the disc deck 30
The editing process for the character information recorded in the C area is performed by communication with the disc deck 30 according to the IEEE 1394 standard. IEEE1394 performed between the personal computer 60 and the disc deck 30
Details of such communication performed by the standard will be described.

The IEEE 1394 standard conforms to a layer (layer).
It has a structured architecture. And IEEE
In the 1394 standard, communication from the upper layer to the lower layer of each of the transmitting node and the receiving node is distinguished by giving names of a request service, a display service, a response service, and a confirmation service.

The request service is a communication from a higher layer to a lower layer of the transmitting node.
An indication is a communication from a lower layer to a higher layer of a reception service. Response
The service is communication from a higher layer for the display service of the receiving node. The confirmation service is the communication from the lower layer to the requesting service of the sending node.

For example, the transaction layer (transa
ction layer), a transaction request (transaction reques
t) is sent. The request consists of two lower layers (link layer and physical layer) on the transmitting side and two on the receiving node.
Through two lower layers. Then, the transaction display (transactio
n indication).

In the following description, two lower layers (link layer and physical layer) on the way are omitted, and communication between the transaction layers on the transmission side and the reception side is described together with the flow of time.

In this embodiment, the asynchronous (asynchronous)
s) Write transaction (write transac)
ton) is used. These are command / response (comma
nd / response) by writing a message to the register.

A command is sent from the transaction layer of the personal computer 60 to the transaction layer of the disc deck 30 between the personal computer 60 and the disc deck 30 as shown in FIG. Further, a response is sent from the transaction layer of the disc deck 30 to the transaction layer of the personal computer 60.

That is, regarding the command sent from the personal computer 60 to the disc deck 30,
A transaction request (trans) is sent to a transaction layer of the personal computer 60.
When the action request is transmitted, a write request packet is transmitted as a command from the transaction layer of the personal computer 60 to the transaction layer of the disk deck 30 in response to the request. When the write request packet is sent, the transaction layer of the disc deck 30 performs a transaction indication and returns an acknowledgment to the transaction layer of the personal computer 60.

As for the response sent from the disc deck 30 to the personal computer 60, when a transaction request is sent to the transaction layer of the disc deck 30, the transaction layer of the disc deck 30 responds to the request.
A write request packet is sent as a response to the transaction layer. When the write request packet is sent, the transaction layer of the personal computer displays a transaction and displays the transaction on the disk deck 30.
A confirmation is returned to the transaction layer.

More specifically, as shown in FIG. 15, a status information request is sent from the transaction layer of the personal computer 60 to the transaction layer of the disc deck 30. As described above, such a status information request is issued from the personal computer 60 about every 50 msec.

In response to the status information request, the transaction layer of the disc deck 30 sends undoable / impossible status information to the transaction layer of the personal computer 60. In response,
If the undo is possible, the personal computer 60 displays the undo button 55 as enabled.

When the undo button 55 is selected in the personal computer 60, an undo command is sent from the transaction layer of the personal computer 60 to the transaction layer of the disc deck 30.

In the present embodiment, communication between the personal computer 60 and the disc deck 30 is performed in accordance with the so-called IEEE 1394 standard. As a command sent from the personal computer 60 to the disc deck 30 and a response sent from the disc deck 30 to the personal computer 60, a write transactoin of asynchronous communication is used. This is done by writing a message to the command / response register.

The write request packet between the personal computer 61 and the disc deck 30 is recorded in an AV (audiov
isual) AV / C (audio / video) used for controlling devices
control) command. The write request packet is an asynchronous packet (asychronous) of the AV / C command.
ous packet).

The structure of the AV / C command packet will be described with reference to FIG. Asynchronous packets are transmitted in the order in which they are transmitted in the first quadlet.
The packet header includes five packetlets from (t) to the fifth quadlet, and a data block (data block) including four quadlets from the sixth to ninth quadlets. Here, one quadlet is 32 bits
Consists of

In the following description, in the order of transmission, the first quadlet of the packet header is the ID of the destination node.
8-bit "destination_ID (destination id
entifier) ”and a 6-bit“ tl (transaction label) ”that is a label indicating a series of transactions.
And a 2-bit “rt” code indicating the retransmission status
(Retry code) ", 4-bit" tcode (transactioncode) "indicating the type of bucket, and 4-bit" pri (priority) "indicating the priority.

The second and third quadlets of the packet header include a 16-bit “source_ID (source identifier)” indicating the destination node and a 48-bit “desitination” indicating the memory address of the destination node.
_offset (destination memory address) ".

The fourth quadlet of the packet header is a 16-bit “data_length (length of data)” indicating the length of “data_field” excluding “pad bytes”, and a 16-bit “extend” that is an extended transaction code.
ed_tcode (extended transaction code) ".

The fifth quadlet of the packet header is a CRC (cyclic redundancy ch) for the header portion.
eck) is a quadlet “header_CRC (CRC for
header field) ".

The sixth quadlet of the data block includes a 4-bit CTS, which is the ID of the command set, and a 4-bit "ctype / response (command type / respons
e) ”and a 5-bit“ subunit type ”which is an address for specifying a functional unit in the device.
And a 3-bit "id (identifie)" which is an address for distinguishing the same "subunit type".
r) ”and an 8-bit“ opcode (operati
on code) "and an 8-bit" operand "which is a command parameter.

The seventh and eighth quadlets of the data block describe "additional command parameters" 40 if necessary.
It consists of a first area of bits and a second area of 24 bits that performs "padding" if necessary.

The ninth quadlet of the data block is:
Data of the quadlet that is the CRC for the data part
It consists of _CRC.

FIG. 17 shows the data block of the asynchronous packet for the data block of the write request of the AV / C command. As described above, this data block includes “CTS = 0000” and “ctype / re
sponse ”,“ subunit type ”,“ id ”, and“ opcod ”
and “oprand.” If necessary, “oprand” can be followed by the added “oprand”.

The “ctype / response” of the data block is
As shown in FIG. 18, “command type” from “0000” to “0111” and “100”
"Response" from "0" to "1111".

For the command type, "0000"
Is "control", "0001" is "status", "0010" is "inquiry",
“0011” is “notify”, and “0100” to “0111” is “reserved”.

Regarding the response, “1000” indicates “not implemented” and “1001” indicates “success (a
ccepted) "," 1010 "is" rejected ",
“1011” is “in transition”, “11”
00 ”means“ existing and / or stable (implemented / stab
le) ”and“ 1101 ”are“ changed ”,“ 11 ”
10 ”is“ reserved ”, and“ 1111 ”is“ provisional (interi
m) ".

"Subunit_type" of the data block indicates the type of the subunit as shown in FIG. That is, “00000” is replaced with “monitor (monito
r) ”and“ 00100 ”are“ VCR (video casette rec
order) ”and“ 00101 ”are“ tuners ”,
“00111” is “camera”, “1111”
“1” is “unit.” In the case of “unit,” the “id” field is also “111”.
“001” to “00011” and “01000” to “11110” are reserved.

Each of these “subunit_type” has a table of “opcode”. As an example of this table, the subunit type is VCR (video case).
tte recorder) will be described with reference to FIG.

Regarding the “opcode”, “00h” is “vendor-dependent”, “50h” is “search mode”, and “52h” is “absolute track number”. number; atn) "," 6
0h ”means“ MIC open (openmemory in casette; open
mic) ”and“ 61h ”are“ MIC read (read memory)
"in casette; read mic)" and "62h" are "MIC write (write memory in casette; write mic)",
“C1h” is “load medium”, “C2
h ”is“ record ”and“ C3h ”is“ playback (pla
“y)” and “C4h” are “wind”. These “opcodes” are each defined as “oprand”, where “h” indicates hexadecimal notation. The MIC is a memory provided in the cassette.

The disk deck 30 connected to the personal computer 60 is controlled by the format command. The undo command sent from the personal computer 60 to the disc deck 30 is described in "opcode" and "oprand" of the data block of the asynchronous packet shown in FIGS.

That is, the undo command is as shown in FIG.
, The first byte is composed of "opcode" and the second to fourth bytes are composed of "oprand". The first to fourth bytes constitute a “common command header part”.

The first byte is "oprand" as an undo code 44 ₁₆ , and the second byte is "oprand [0]"
Is stored as "result". The third and fourth bytes are “oprand [1]” and “oprand, respectively”
[2] ”are both reserved.

The response of the undo is as shown in FIG.
“Response frame type”
It consists of “success” and “failure”.

When the “response frame type” is “success”, the “result” is “00 ₁₆ ”, the “result code name” is “success”, and the process is completed successfully. "Meaning". Also,
Other values for “Result” are reserved.

When the “response frame type” is “failure”, the “result” is “FF ₁₆ ”, the “result code name” is “undefined (unknown)”, and the “meaning that an undefined error has occurred” ". Other values of “result” are reserved.

There is no "status" or "notify" command for the undo command. If desired, the controller checks and monitors the disc status descriptor. If there is no supported command for undo, a "failure" response is returned.

The personal computer 60 controls the undo process by sending the above-mentioned undo command to the disc deck 30, and can know the result by a response.

In the above embodiment, the disc deck 30 for recording and reproducing data on and from the disc has been described as an example, but the present invention is not limited to this. The present invention can be applied to, for example, a recording apparatus and a reproducing apparatus for recording / reproducing digital video, digital data, and the like. Further, the present invention can be applied to a recording device and a reproducing device using a recording medium such as a tape-shaped recording medium or a semiconductor memory.

In the above embodiment, the communication between the personal computer 60 and the disc deck 30 is performed in accordance with the so-called IEEE 1394 standard, but the present invention is not limited to this. For example, data can be communicated by a parallel interface such as the so-called RS-232C standard.

Further, in the above-described embodiment, the undo command in the editor for editing the character information of the U-TOC of the disc cancels the immediately preceding editing process and restores the original state where the editing process has not been performed. However, the present invention is not limited to this. For example, a series of editing processes can be collectively canceled by an undo command.

In the above-described embodiment, the character information recorded in the U-TOC area of the disc corresponds to the GU displayed on the first display section 65 of the personal computer 60.
Although it has been described that the editing is performed by the editor of I, the present invention is not limited to this. For example, the remote control unit 100
The character information can also be edited via.

In the above embodiment, RA
Although the M13 is used as a buffer for storing character information recorded in the U-TOC area of the disk 1, the present invention is not limited to this. Independent buffers may be used as the buffers.

[0139]

As described above, according to the present invention, recording and / or reproduction are performed on a recording medium having a recording area for recording a program as main information and a management area for managing character information corresponding to the program. By sending a command to a recording and / or reproducing unit having a buffer for storing the character information through a predetermined transmission path, the editing operation on the character information stored in the buffer is canceled to restore the original state. Is what you do.

That is, recording and / or
Alternatively, by sending a command to the playback device, the editing operation on the character information stored in the buffer is canceled and the original state is restored, so that the editing of the character information managed in the management area is performed efficiently. be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram for describing an overall configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a connection between a disc deck and a personal computer.

FIG. 3 is a diagram illustrating a GUI window.

FIG. 4 is a diagram for describing an example of a medium format of a disk.

FIG. 5 is a diagram for describing U-TOC sector 0 in a medium format of a disk in detail.

FIG. 6 is a diagram for explaining a process of correctly connecting data discretely recorded on a program area of a disk.

FIG. 7 is a diagram for describing in detail a U-TOC sector 1 in a medium format of a disk.

FIG. 8 is a diagram for describing in detail a U-TOC sector 2 in a medium format of a disk.

FIG. 9 is a diagram for describing in detail a U-TOC sector 4 in a medium format of a disk.

FIG. 10 is a flowchart showing an undo process for character information of a disc.

FIG. 11 is a diagram showing icons of application programs.

FIG. 12 is a diagram showing icons indicating a disc deck connected to the personal computer.

FIG. 13 is a diagram illustrating a dialog requesting confirmation of whether to execute an undo process.

FIG. 14 is a diagram for explaining commands and responses between transaction layers.

FIG. 15 is a diagram illustrating transmission and reception of commands between a personal computer and a disc deck.

FIG. 16 is a diagram showing the structure of an AV / C packet.

FIG. 17 is a diagram showing a part of a data block of an AV / C packet.

FIG. 18 is a diagram showing a command and a response of “ctype / resuponse” of the AV / C command.

FIG. 19 is a diagram illustrating the content of “subunit_type” of the AV / C command.

FIG. 20 is a diagram illustrating the contents of an “opcode” of an AV / C command.

FIG. 21 is a diagram showing a structure of an undo command.

FIG. 22 is a diagram showing types of undo responses.

[Description of Signs] 1 disk, 11 system controller, 30 disk deck, 60 personal computer, 46 U
-TOC area, 47 program area

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuji Ogihara 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 5D110 AA19 AA29 BB20 CJ01 CJ06 DA01 DB03 DC28 DD14 DD16 DE02 DE04 DE06 FA08

Claims (5)

[Claims] A buffer for storing character information for performing recording and / or reproduction on a recording medium having a recording area for recording a program as main information and a management area for managing character information corresponding to the program. Recording and / or reproducing means provided; input means for inputting character information; and sending a command based on the character information input to the input means to the recording and / or reproducing means via a predetermined transmission path. An editing apparatus for editing character information stored in the buffer according to (1), and an editing unit having a restoration command for canceling the editing process on the character information and restoring the original state. 2. The information processing apparatus according to claim 1, wherein the predetermined transmission path has a transmission form defined by the IEEE 1394 standard. 3. The editing means requests status information from the recording and / or reproducing means at predetermined time intervals, and based on the status information sent from the recording and / or reproducing means in response to the request. 2. The information processing apparatus according to claim 1, wherein the restoration command is sent to the recording and / or reproducing means. 4. An editing method for editing character information in a recording medium having a recording area for recording a program as main information and a management area for managing character information corresponding to the program, wherein the character information is stored. The character information is input, and the stored character information is edited by transmitting a command based on the input character information via a predetermined transmission path, and the restoration command is transmitted through the transmission path to transmit the character information. An editing method characterized in that the editing process is canceled to restore the original state. 5. The editing method according to claim 4, wherein the predetermined transmission path has a transmission form defined by the IEEE 1394 standard.