JP2666273B2 - Disk recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order. A Industrial Field of Use B Outline of the Invention C Prior Art D Problems to be Solved by the Invention E Means for Solving the Problems F Function G Embodiment (G-1) Configuration of Disk Recording / Reproducing Apparatus (G-1) Operation of disk recording / reproducing apparatus (FIGS. 2 to 5)
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording apparatus for recording data such as performance information on a recordable disk to which an absolute address is given, for example, a performance of a recordable / reproducible compact disk (CD). Applied to devices and the like. B SUMMARY OF THE INVENTION The present invention relates to a disk recording apparatus for recording data such as performance information on a recordable disk given an absolute address, wherein each information unit area records data such as performance information in a program area of the recordable disk. Record the start address data and the end address data in the lead-in area,
Based on the start address data and the end address data of each information unit area, a recordable area such as an unrecorded part or an unnecessary recorded part of the program area is detected, and in the setting state of the recording operation mode, By displaying the length in ascending order, the user can easily recognize the recordable area corresponding to the length of the information to be recorded, and can reliably perform the recording operation. C Prior Art Conventionally, a reproduction-only disk player device such as a CD player for reproducing a so-called compact disk (CD) in which an audio signal such as a sound or a musical sound is digitized and recorded on an optical disk has been generally provided. All the songs are continuously recorded on the compact disc (CD). Normally, the CD player continues the playback operation as it is even after the end of the playback of one song, and continuously continues to the next song. Playback. Since conventional CD players are exclusively for reproduction, recording and reproduction can be performed, for example, using a magneto-optical disk formed of a magneto-optical recording medium on which information can be rewritten. The development of disk systems that maintain compatibility has been progressing. The recordable disc 1 used in the disc system has, for example, a depth λ as shown in the schematic diagram of FIG.
A pre-group 2 of / 8 (λ is the wavelength of the laser beam for information recording) is formed in a spiral shape, and a land portion 3 between the pre-groups 2 has a depth λ / Four
Embossed areas 4 composed of a concavo-convex pattern of pits and data recording areas 5 where magneto-optical recording is performed are alternately arranged at the same pitch. The recordable disc 1 is provided with a lead-in area 7 on the inner peripheral side of a program area 6 where performance information is recorded, and a list (TOC: Table of Content) indicating the recorded contents of the program area 6 is provided.
s) Information is recorded in the lead-in area 7. Further, the emboss area 4 of the recordable disc 1 has a 24-bit synchronization signal, 14 bits (one symbol) constituting one frame of a data format as shown in FIG. 7 standardized on a compact disc (CD). ), Data and parity of 14 × 32 bits (32 symbols) of performance information and the like, and 588 each consisting of 3 margin bits provided between each symbol.
Channel Bit EFM (Eight to Fourteen Moudulati
on) Of the modulation data, the synchronization signal and the subcode are recorded as an uneven pattern formed by embossing, and absolute time information (absolute address) from the start position of the program area 6 is given as the subcode. Have been. In the disk system using the recordable disk 1, a constant linear velocity (CLV: Constant Lv.) Is used by using the absolute address reproduced from the emboss area 4.
(Enear Velocity) controls the rotation of the disc, etc., and records and reproduces information in a standardized data format on a compact disc (CD). D Problems to be Solved by the Invention By the way, in a disk system capable of recording and reproducing and maintaining upward compatibility with the compact disk (CD), if all songs are continuously recorded on the disk, However, it is not limited, and for example, a case where an unrecorded portion occurs between the first music piece and the second music piece may be considered. In this case, if the reproduction is continuously performed, the silent part is continuously reproduced until the first music is completed and the second music is started. Also, in the case of performing so-called overwrite recording in which a new piece of music is re-recorded on a recorded portion, if the original song remains after the newly recorded song, that portion is also reproduced during reproduction. I will. Furthermore, if a disc on which a number of songs have already been recorded is to be further recorded in a recordable area such as an unrecorded portion or an unnecessary recorded portion, it is not sufficient to record a new song. It is necessary to determine whether or not there is a recordable area, and a complicated operation must be performed in order to find the already recorded music and calculate the recorded time. In addition, when unrecorded portions and unnecessary recorded portions are distributed in a plurality of locations, a large amount of work is required to determine a recordable area necessary for recording a new song. become. Accordingly, the present invention has been made in view of the above-described problems, and has been made in a disk recording apparatus that records data such as performance information on a recordable disk to which an absolute address is given, so that information can be recorded simply and efficiently. An object of the present invention is to provide a disk recording apparatus having a novel configuration having a function of detecting a recordable area such as an unrecorded portion or an unnecessary recorded portion on a recordable disc and displaying the recordable area in ascending order. E Means for Solving the Problems In order to solve the above problems, the present invention records data in a program area of a recordable disc to which an absolute address is given, and performs an operation of recording data in the program area. Recording means for recording the start address data and the end address data of the data-recorded information unit area of the program area in the lead-in area after the end,
First storage means for reading and storing start address data and end address data of each information unit area recorded in the lead-in area, and a predetermined information unit (N: natural number) recorded in the lead-in area Is compared with the start address of the information unit N + 1 to be recorded next, and if an address difference of not less than a predetermined value occurs, it is determined that the recordable area exists, and the information unit (N: Second storage means for storing recordable area data based on the end address of (natural number) and the start address of the information unit N + 1 to be recorded next, and recordable area data stored in the second storage means Display means for displaying the recordable time of the recordable area based on the above. F Function In the present invention, data such as performance information is recorded in a program area of a recordable disc to which an absolute address is given, and after the operation of recording data in the program area is completed, an information unit having data recorded in the program area is recorded. By recording the start address data and end address data of the area in a lead-in area provided on the inner or outer circumference of the disc, there is a certain address based on the start address data and end address data reproduced from the lead-in area. An area in which an end difference of the information unit N and a start address of the next information unit N + 1 have an address difference equal to or more than a predetermined amount is set as a recordable area. Can be detected. Then, in a state where the recording operation mode is set by an operation input, the address difference data indicating the recordable area detected by the data processing means is displayed in a predetermined order, so that the size of the recordable area can be accurately determined for the user. To be recognized. G Embodiment The embodiment described below uses a magneto-optical disk having a perpendicular magnetization film having a magneto-optical effect as a recording medium as the recordable disk 1 having the recording format shown in FIG. Disk 1 with constant linear velocity (CLV: Co
The present invention is applied to a disk recording / reproducing apparatus for recording / reproducing performance information of a data format shown in FIG. 7 standardized on a compact disk (CD) by rotating and driving at a nstant velocity (Velocity). . G-1 Configuration of Disc Recording / Reproducing Apparatus As shown in the block diagram of FIG. 1, the disc recording / reproducing apparatus is installed so as to oppose the recordable disc 1 which is rotationally driven by a disc motor 11 therebetween. An optical head 12 and a magnet 13 are provided. The optical head 12 is connected to an emboss reproduction amplifier 14 and an MO reproduction amplifier 15, and is also connected to a recording amplifier 27. The optical head 12 includes optical components such as a laser diode, a photodetector, a lens, and a beam splitter, and irradiates a laser beam to the recordable disc 1 to record and reproduce information. Has become. The magnet 13 applies a magnetic field for recording or erasing information on the recordable disk 1 using the magneto-optical effect, and the direction of the magnetic pole is reversed between the recording operation mode and the erasing operation mode. It has become. Of the reproduced RF signals read from the recordable disc 1 by the optical head 12, the reproduced signals from the embossed area 4 are supplied to a decoder 16 via the embossed reproduction amplifier 14, and are absolutely decoded by the decoder 16. The address data is supplied to the microcomputer 17. The reproduction signal reproduced from the data recording area 5 of the recordable disc 1 is
The signal is supplied to the reproduction processing circuit 18 via the MO reproduction amplifier 15 and predetermined signal processing is performed. Then, performance information reproduced from the program area 6 of the recordable disc 1 is supplied from the reproduction processing circuit 18 to a digital / analog (D / A) converter 20 and converted into an analog signal by the D / A converter 20 for buffering. The reproduced audio signal So is output from the signal output terminal 22 via the amplifier 21. The TOC information reproduced from the lead-in area 7 of the recordable disc 1 is transmitted from the reproduction processing circuit 18 to the TOC buffer memory.
The data is supplied to the buffer memory 19 and stored in the buffer memory 19. In this disc recording / reproducing apparatus, an audio signal to be recorded in the program area 6 of the recordable disc 1
Si is supplied from a signal input terminal 23 to an analog / digital (A / D) converter 25 via a buffer amplifier 24, and is digitized by the A / D converter 25. The performance information digitized by the A / D converter 25 is
After performing a predetermined signal processing in the recording signal processing circuit 26, it is supplied to the optical head 12 via the recording amplifier 27,
The program is recorded in the program area 6 of the recordable disc 1. Further, an operation key 28 for inputting control data and a display 29 for displaying various data are connected to the microcomputer 17 and information indicating a recordable area of the program area 6 of the recordable disc 1 is displayed. A space buffer memory 30 for storing is connected. The output of the A / D converter 25 is also supplied to the microcomputer 17 as a silent part detection signal. Here, the recordable disc 1 is capable of recording, for example, 60 minutes of performance information in its program area 6, and the first music starts playing at 00:00:00 and ends at 05:00.
The second song starts playing at 08:00 and ends at 13:00, and the third starts at 15:03 and ends at 20:00. The fourth song starts playing at 28:00 and ends at 36:00 and the fifth song
It is assumed that performance information for five songs has already been recorded so that the performance starts at 36 minutes and 20 seconds and ends at 41:00 hours.
The TOC information indicating the recorded contents of
It is assumed that TOC information as shown in Table 1 indicating the recorded areas of the performance information of the music No. is indicated by absolute addresses. G-2 Operation of Disc Recording / Reproducing Apparatus As shown in the flowchart of FIG. 2, when the recordable disc 1 is loaded (Step 101) at the start of the operation, the disc recording / reproducing apparatus firstly starts recording on the recordable disc. The TOC information recorded in the first lead-in area 7 is read by the optical head 12, reproduced, and stored in the TOC buffer memory 19 (step 102). Next, based on the TOC information stored in the TOC buffer memory 19, as the space time indicating the recordable area of the program area 6 of the recordable disc 1, the performance start time (start address data) of the (N + 1) th music and ( N) Calculate the address difference from the performance end time (end address data) of the tune (step 103), and determine whether or not the difference (that is, the space time) is larger than a predetermined address difference (for example, 30 seconds) ( Step 104) is performed. As a result of the determination in step 104, if N = 1, that is, if there is a difference of 30 seconds or more between the performance start time of the second music and the performance end time of the first music, the first music It is determined that the area between the recording part and the recording part of the second music is the first recordable area, and the performance start time (start address data) of the second music and the performance end time (end address data) of the first music ) Is stored in the space buffer memory 30 as space information together with the space number and the like, which is indicated by the difference data from the above (step 105). Further, after the operation of step 105 is completed, or as a result of the determination in step 104, if there is no difference of 30 seconds or more between the performance start time of the second music and the performance end time of the first music, Is a step of determining whether or not a process of detecting a recordable area has been performed for the TOC information of all the songs stored in the TOC buffer memory 19
After returning to step 103 via 106, the difference between the performance start time (start address data) of the next third music and the performance end time (end address data) of the second music is calculated, and the space information is stored in the space buffer. The operation shifts to the operation of storing in the memory 30 (step 103, step 104, step 105).
Thereafter, the address difference is determined for all pieces of music in order, and a recordable area having a recordable time of 30 seconds or more is detected. When the result of the determination in step 106 is “YES”, that is, when the process of detecting the recordable area is completed, the space information stored in the space buffer memory 30 is changed to SY.
Rearrangement is performed in the order of OTEI, for example, in the order of the shortest recordable time (step 107), and the apparatus enters a standby state. Here, the program area 6 of the recordable disc 1
When the recordable area is detected by the calculation from the TOC information shown in Table 1 above, in practice, the recording start portion and the recording end portion each have an extra time of 3 seconds, so that the second portion is secured. The space information as shown in the table is detected by the microcomputer 17 and stored in the space buffer memory 30. Then, the microcomputer 17 is
In a standby state where the TOC information is stored in the TOC buffer memory 19 and the space information is stored in the space buffer memory 30, a control input by operating the operation key 28 is received, and a recording operation as shown in the flowchart of FIG. The control operation of the mode is performed. That is, the microcomputer 17 receives an operation of the REC key as the operation key 28 (step 20).
1) and setting of a recording operation mode (step 202). Then, the space number [No.] is set to "1" (step 2).
03) Then, the space information whose space number [No.] is "1" is read from the space buffer memory 30 (step 204) and displayed on the display screen of the display 29 (step 205). Here, when the recording operation mode is set on the display screen of the display unit 29, a character display "SPACE" is displayed, and a space number [No.] and its recordable time [minute, second] are displayed. Is displayed as shown in FIG. When the microcomputer 17 receives the operation of the FF key as the operation key 28 in the setting state of the recording operation mode (step 206), the microcomputer 17 increments (207) the space number [No.] (step 207), and proceeds to step 20.
Returning to the space information reading operation of No. 4, the space information of the space number [No.] is displayed on the display screen of the display 29, and the operation of the FR key as the operation key 28 is received (step 208). And space number [No.]
Is decremented (209), and the flow returns to the space information reading operation in step 204, where the space number [No.]
Is displayed on the display screen of the display 29. Further, in the setting state of the recording operation mode, the microcomputer 17 performs REC as the operation key 28.
When the key operation is accepted again (step 210), the recording operation for the recordable area of the space number [No.] displayed on the display screen of the display 29 is started (step 211), and the STOP key is operated. Accept (Step 2
Perform the recording operation up to 12). When the operation of the STOP key is received (step 213), the recording operation is completed (step 2).
14) Then, the content of the TOC buffer memory 19, that is, the TOC information is changed (step 214), and the content of the space buffer memory 30, ie, the space information is changed (step 214).
215) Then it goes into a standby state. Here, for example, when the performance information having the performance time of 2 minutes and 40 seconds is recorded in the recordable area with the space number [No.] having the recordable time of 2 minutes and 54 seconds “2”, the above-mentioned step is performed.
By the processes at 214 and 215, the contents of the TOC buffer memory 19 are changed to new TOC information shown in Table 3, and the contents of the space buffer memory 30 are changed to new space information shown in Table 4. Further, the disc recording / reproducing apparatus has the operation key
When the eject mode is specified by the operation of 28, the fifth
As shown in the flowchart of FIG. 7, the TOC information stored in the TOC buffer memory 19 is recorded in the lead-in area 7 of the recordable disc 1 by the optical head 12 (step 301). Step 302) is performed to end the operation. H Effects of the Invention According to the present invention, an unrecorded portion or an unnecessary record existing in the program area of a recordable disc based on start address data and end address data recorded in a lead-in area of a recordable disc given an absolute address. When a recordable area such as a portion is detected, and a recording operation mode is set by an operation input, address difference data indicating the detected recordable area is displayed in ascending order, and the size of the recordable area can be accurately determined by the user. Since the recording operation is started by the operation input after the recognition, the necessary information can be recorded reliably and efficiently by a simple operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a schematic configuration of a disk recording / reproducing apparatus to which the present invention is applied, FIG. 2 is a flowchart showing an operation of the disk recording / reproducing apparatus in a setup mode, FIG. 3 is a flowchart showing the operation of the recording mode, FIG. 4 is a schematic diagram showing the display contents of the display in the recording mode, and FIG. FIG. 6 is a flow chart showing the operation. FIG. 6 is a schematic diagram for explaining the recording format of a recordable disc used in the disc recording / reproducing apparatus. FIG. 7 is a data format of information recorded on the recordable disc. FIG. 1 Recordable disk 4 Emboss area 6 Program area 7 Lead-in area 12 Optical head 16 Decoder 17 Microcomputer 19 TOC buffer memory 29 Display 30 Space buffer memory

Claims (1)

(57) [Claims] Data is recorded in the program area of the recordable disc to which the absolute address is given, and after the operation of recording data in the program area is completed, the start address data and the end address data of the data-recorded information unit area in the program area are written. Recording means for recording in the lead-in area; first storage means for reading and storing start address data and end address data of each information unit area recorded in the lead-in area; The end address of a given information unit (N: natural number) is compared with the start address of the next information unit N + 1 to be recorded, and a recordable area exists when an address difference exceeding a predetermined value occurs. And the end address of the information unit (N: natural number) and the start address of the next information unit N + 1 to be recorded Second storage means for storing the recordable area data based on the data, and a setting operation of a recording operation mode for setting a recording operation mode so that a recording operation start operation can be received by an operation input. Means for reading and displaying the recordable area in a predetermined order in response to a display operation input based on the recordable area data stored in the second storage means in a setting state of the recording operation mode. A disk recording device comprising: