JP2626222B2 - Recording device and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording and reproducing apparatus for recording digital information such as audio and video together with attribute information on a recording medium.

2. Description of the Related Art Conventionally, a compact disc (CD) is well known as a read-only disc. Recently, write-once and rewritable optical disks have also been developed. Here, as an example, a rewritable optical disk using a format similar to that of a CD (commonly known as Orange Book ... Document (1)) will be described as an example.

FIG. 12 is a diagram showing a recording track pattern on a disk. In FIG. 12, a spiral track 41 composed of a pit row on which information is recorded is formed on the disk 18. The track 41 is further divided into frames. The signals are recorded continuously from the inner circumference.

A conventional example will be described with reference to FIGS. 13 and 14. FIG. FIG. 13 is a block diagram showing a recording / reproducing apparatus which optically records and reproduces time information, that is, audio information accompanied by a time code on a disk in sector units. In FIG. 13, the input digital audio information 1 is usually a serial signal which has been bi-phase modulated,
Here, demodulation is performed. The digital audio information 3 output from the input buffer 2 is supplied to an encoder 4. On the other hand, the input time code 5 is usually modulated by bi-phase modulation or the like, but is demodulated by the time code reading means 6, and the output time code information 7 is supplied to the subcode information processing means 9. The subcode information is attribute information added to the digital audio information 3.
The subcode information generating means 8 is composed of a panel of the recording apparatus, switches on the panel, and a microcomputer, and generates subcode information such as song number information and date from a signal generated by pressing the switch. The time code information 7 output from the time code reading means 6 and the attribute information such as the song number information and date generated by the sub code information generating means 8 are output to the encoder 4 by the sub code information processing means 9 according to a predetermined format. Is done. Reference numeral 10 denotes subcode information output from the subcode information processing means 9.

The encoder 4 adds parity for error correction, interleaving, and addition of a synchronization signal to the digital audio information 3 and the subcode information 10 according to a predetermined format, for example, reference (1). At this time, the parity addition and interleaving are performed for each predetermined channel bit length. For example, in Reference (1), the sampling frequency is 44.1 kHz, and the L and R channels are divided into 6 samples each for one frame, and each frame is added with the synchronization signal L and R data of each channel and parity for error correction. Have been. The subcode that records the time code, song number, etc. has eight bits in one frame, and is completed in 98 frames. Therefore, in order to completely record and reproduce the subcode, recording and reproduction must be performed in 98-frame units. The interleaving is cross-interleaving, which is a non-complete code, but the interleaving length is 108 frames. Here, the 108 frames may be regarded as one sector as a unit of recording. However, since an incomplete code is used, discontinuity of an error correction code occurs at a connection point of a recording unit. As a modulation method, 8 bits are converted into 10-bit channel bits.
EFM modulation is performed. The encoder output signal 12 is applied to the laser driving means 13. The laser driving means 13 generates a signal for driving the optical head 14 based on the encoder output signal 12. The actuator 15 slightly displaces the optical head 14 mounted on the actuator 15, and the traverse control means 16 displaces the optical head 14 and the actuator 15 from the inner circumference to the outer circumference in the disk radial direction. The spindle control means 17 rotates the optical disk 18 at a constant linear velocity.

On the other hand, in the reproducing system, the signal reproduced from the optical head 14 is amplified by the RF amplifier 19. The output signal 20 from the RF amplifier is EFM-modulated by the decoder 21, error-corrected, and deinterleaved. Digital audio information 22 output from the decoder 21 is supplied to an output buffer 23,
Here, the output digital audio information is bi-phase modulated.
Get 24. The time code 25 output simultaneously from the decoder 21 is bi-phase modulated by the time code output means to obtain an output time code 27.

The system control means 11 outputs a rotation command with a constant linear velocity to the spindle control means 17, and outputs a tracking command to the traverse control means 16 and the actuator 15. At the time of recording, the encoder 4 outputs an encoding command for adding the error correction parity, modulation, and synchronization signal to the encoder 4, and outputs the subcode processing command to the subcode information processing means 9. On the other hand, at the time of reproduction, the error correction and demodulation instruction is output to the decoder 21.

FIG. 14 is a recording timing chart. It is assumed that the input digital audio information 1 and the input time code 5 have a frame frequency of, for example, 30 Hz. Subcode information 10 including input digital audio information 1 and input time code 5 is applied to encoder 4. In the encoder 4, error correction parity addition, modulation, and addition of a synchronization signal are performed. 12
Is an output signal from the encoder.

In the above conventional example, an output signal 12 from an encoder includes information 30 for one frame of digital audio information 3 and information 107 for one frame of subcode information 10 including a time code.
Is the same frame on the disk (frame period: about 136 μs
ec). Therefore, the time information and the input information are recorded on the same frame. However,
Since the subcode information 10 is completed in 98 frames as described above, when it is included in one frame of the input time code 5,
Minute, second, and frame information is recorded in a distributed manner over 98 frames.

Problems to be Solved by the Invention However, in the above-mentioned conventional example, inconvenience occurs when audio, video and time code are edited. This will be described below.

Generally, when recording audio and video, editing is performed. In this case, there is a method of recording audio and video in advance and then recording attribute information such as time information. In many cases, time information is added to audio and video as editing materials, but generally the time information added to the material differs for each material and is not continuous. Therefore, it is necessary to add continuous time information again after editing, that is, post-record the time information. Alternatively, it is necessary to record time information in advance and then record audio and video.

However, in the conventional example shown in FIGS. 13 to 14, the time information and the input information are recorded on the same frame. Therefore, after-recording is performed in frame units or
Considering the case where the interleaving is performed in units of 108 interleave lengths, the synchronization signal and the parity for error correction are applied in units of frames, and the interleaving is performed in units of 108 frames. It is necessary to re-encode the data including the sub-code information to be newly added or changed, and record it by the following head. In general, the track pattern on the disk shown in FIG. 12 is not divided into frames but divided into recording and reproducing units called sectors. In Fig. 12,
The frame 42 may be considered as a sector. In this case, audio,
In the case where digital information such as video and attribute information such as a time code are recorded in the same sector, in order to post-record the attribute information such as the time code, reproduction by a preceding head using two heads is performed in the same manner as described above. It is necessary to perform recording by a trailing head. Therefore, the editing system is a two-head system, and has a drawback that it is complicated and expensive.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a recording apparatus that enables post-recording of digital information and attribute information with a one-head configuration, and accurately identifies and associates the digital information and attribute information with each other. It is an object of the present invention to provide a reproducing apparatus for accurately identifying digital information and attribute information and performing synchronous reproduction.

Means for Solving the Problems In order to achieve the above object, a disk recording apparatus according to the first invention of the present application is a recording apparatus for recording information in sectors obtained by dividing concentric or spiral tracks, and comprising: Switching means for switching between the digital information and the attribute information corresponding to the digital information; a digital information block having M (M: positive integer) sectors for recording the digital information as one block; and N for recording the attribute information.
Recording means for continuously or intermittently recording attribute information blocks having one (N: positive integer) sector as one block on the track. Also, the disk recording apparatus of the second invention of the present application includes a means for generating a first identification flag indicating the digital information block, and a first identification flag addition for adding the first identification flag to the digital information block. Means, means for generating a second identification flag indicating the attribute information block, and second identification flag adding means for adding the second identification flag to the attribute information block. Also,
The disk recording apparatus of the third invention of the present application is provided with means for recording the number M of sectors constituting the digital information block in an attribute block. Further, the disk recording apparatus of the fourth invention of the present application is provided with means for recording the above M in a directory area. Further, the disk recording apparatus of the fifth invention of the present application is provided with: means for generating a correspondence flag indicating a correspondence between the digital information block and the attribute block information; and recording means for recording the correspondence flag in a directory area. Things. In addition, the sixth application
The disk recording apparatus according to the invention, further comprising: a means for generating the correspondence flag indicating the correspondence between the digital information block and the attribute information block; and setting the correspondence flag to at least one of the digital information block and the attribute information block. And a corresponding flag adding means to be added to one side. Further, the disk recording apparatus of the seventh invention of the present application is provided with means for recording the time attribute information of the digital information in the attribute information block. Further, the eighth disk recording apparatus of the present application is provided with a means for recording with a gap provided between the digital information block and the attribute information block.

Further, a ninth disk reproducing apparatus of the present invention is characterized in that:
Means for reading information on a sector from a recording medium recorded by the recording apparatus described above; extracting means for extracting the first identification flag or the second identification flag from the read sector information; Alternatively, there is provided switching means for selecting the digital information and attribute information corresponding to the digital information by a second identification flag. A tenth embodiment of the present invention provides a disk reproducing apparatus, comprising: means for reading information on a sector from a recording medium recorded by a recording apparatus according to claims 1 to 8; and a means for indicating a correspondence between a digital information block and an attribute information block. An extraction means for extracting a flag, and a synchronization control means for synchronously reproducing the digital information block and the attribute information block based on the correspondence flag.

According to the disk recording device of the first invention of the present application, with the above configuration, digital information and attribute information corresponding to the digital information are recorded in different sectors, and M (M: positive integer) of the digital information are recorded. Digital information block having one sector as a block and N for recording the attribute information
Attribute information blocks having one (N: positive integer) sector as one block can be recorded on the track by being switched continuously or intermittently and alternately. Further, the disk recording apparatus of the second invention of the present application records a first identification flag indicating the digital information block in the digital information block, and records a second identification flag indicating the attribute information in the attribute information block. Thus, the digital information block and the attribute information block can be identified and recorded. Further, the disk recording apparatus according to the third invention of the present application can record the number M of sectors constituting the digital information block in the attribute block to form a digital information block having a variable number of sectors. Further, the disk recording device of the fourth invention of the present application can record the number M of sectors constituting the digital information block in the directory area, thereby forming a digital information block having a variable number of sectors. In the disk recording apparatus according to the fifth aspect of the present invention, a correspondence flag indicating a logical or temporal correspondence between the digital information block recorded in a separate sector and the attribute block information is recorded in a directory area. Is possible. The disk recording apparatus according to the sixth aspect of the present invention may further include a correspondence flag indicating a correspondence relationship between the digital information block and the attribute block information recorded in separate sectors, and / or any one of the digital information block and the attribute information block. It can be added to either of them, and the correspondence between the digital information block and the attribute block information can be recorded. Further, the disk recording device of the seventh invention of the present application can record the time attribute information of the digital information in the attribute information block. The disc recording apparatus according to the eighth aspect of the present invention can easily perform post-recording by providing a gap between the digital information block and the attribute information block.

A ninth aspect of the present invention provides a disk reproducing apparatus which reads information on a sector from a recording medium recorded by the first to eighth disk recording apparatuses of the present invention, and converts a digital information block from the read sector information. A first identification flag indicating the attribute information corresponding to the digital information is extracted, and the digital information and the attribute information corresponding to the digital information are selected based on the first or second identification code. Can be output.

Also, a disc reproducing apparatus according to a tenth aspect of the present invention reads information on a sector from a recording medium recorded by the recording apparatus recorded by the first to eighth disk recording apparatuses according to the first to eighth aspects of the present invention. A correspondence flag indicating a correspondence relationship with the information block is extracted, and the digital information block and the attribute information block can be synchronously reproduced based on the correspondence flag.

Embodiment FIG. 1 shows the configuration of the first embodiment of the present invention, FIG. 2 shows the timing of a recording operation, and FIG. 3 shows a flowchart for switching between digital audio information and attribute information during recording. FIG. 1 is a configuration diagram of a recording apparatus that optically records information on a disk. Track configuration on disk is eleventh
This is the same as the conventional example shown in FIG. However, the frame 42 in FIG. 12 is a unit of recording and reproduction called a sector here. In this case, the code configuration for error correction is added on a sector basis. That is, it is assumed that the sector is completed, and a sector number is added to each sector in advance. 1 and 2 show a case where audio information accompanied by a time code is recorded on a disk. In FIG. 1, 1, 4,
5, 6, 7, 13 to 18 are the same as the conventional example shown in FIG.

The input digital audio information 1 is applied to an input buffer 101, where it is demodulated and written to a first storage means 141. Reference numeral 142 denotes an address generation unit that generates an address to be added to the first storage unit 141, and is configured by a preset counter or the like. The first storage unit 141 has, for example, a double buffer configuration, and is controlled by an address from the first address generation unit 142, and digital information is written and read in sector units. The digital audio information 117 output from the first storage unit 141 is supplied to the switching unit 108.

On the other hand, the input time code 5 is demodulated by the time code reading means 6 and supplied to the attribute information processing means 108.
The attribute information generating means 105 is composed of a panel of the recording apparatus, switches on the panel, and a microcomputer. The attribute information generating means 105 generates attribute information such as song number information and date from a signal generated by pressing the switch. However, the data arrangement is different from that of the conventional example in that the time, the hour, the minute, the second, and the frame are stored in one sector instead of being completed in 98 frames as in the conventional example. The time code information 7 output from the time code reading means 6 and the attribute information such as the song number information and the date generated by the attribute information generating means 105 are transmitted to the BCD by the attribute information processing means 106.
(Binary-coded decimal number) and sent to the second storage means 143. Reference numeral 144 denotes second address generating means for generating an address of the second storage means 143, which is constituted by a preset counter or the like. The second storage unit 143 is controlled by an address from the second address generation unit 144, and writes and reads attribute information in sector units. An output 107 from the second storage unit 143 is output to the switching unit according to a predetermined format. 108 is digital audio information 10
Switching means for switching between 3 and the first attribute information 107 can be realized by a selector. 112 is a switching signal given from the system control means to the switching means 108, and 109 is a switching signal
7 is the output signal.

In the encoder 4, an error correcting parity is added to the digital audio information 103 and the first attribute information 107 in accordance with a predetermined format, and further modulated. The encoder output signal 12 is applied to the laser driving means 13. The laser driving means 13 generates a signal for driving the optical head 14 from the encoder output signal 110. The timing generation means 125 includes a timing signal 126 indicating a sector delimiter.
Is generated and supplied to the system control unit 111 and the encoder 4. The operations of the actuator 15, the optical head 14, the traverse control means 16, and the spindle control means 17 are controlled by the system control means 111 as in the conventional example shown in FIG.

The operation of the first embodiment of the present invention will be described below with reference to FIGS. In FIG. 2, the horizontal axis represents time. Assuming that the input digital audio information 1 is divided into frames whose frame period is T, the input audio buffer 101
It becomes 03. The digital voice information 103 is stored in a first storage unit 141.
Is added to The digital audio information 117 output from the first storage unit 141 is output to the switching unit 108. It is assumed that digital audio information for one frame period is recorded in three sectors on the disk. On the other hand, as described above, the input digital audio information 1 is accompanied by the time code 5 having the frame period T as a unit. The input time code 5 is read by the time code reading means 6 and becomes a group of information together with attribute information such as song number information, a code indicating the beginning of the song, and date generated by the attribute information generating means 105 in the attribute information processing means 106. Second storage means 143
Is output to The first attribute information 1 from the second storage unit 143
07 is output. The digital voice information 117 and the first attribute information 107 are switched by the switching unit 108 so that the sector is simple. The output information 109 of the switching unit 108 is applied to the encoder 4.

The switching operation of the digital audio information 117 and the attribute information 107 will be described below using the schematic flow of the system control means 111 shown in FIG. In step 1, the sector timing signal 126 generated by the sector timing generation means 125
Is input, and a rising edge is detected in step 2. In step 3, the sector number is checked, and if the sector number is N = 4m (m is a non-negative integer), the process proceeds to step 4, and if N + 1, N + 2, N + 3, the process proceeds to step 8. Steps 4, 5, 6, and 7 are steps for outputting the attribute information 107 to the encoder 4. First, in step 4, the system control unit 111 outputs a switching signal to the attribute information as the switching signal 112 to the switching unit 108. In step 5, a read command is output to the second storage means 143. In step 6, an instruction for generating an address for reading the attribute information for one sector sequentially from the head of the sector is output to the second address generating means 144. As a result, attribute information for one sector is sequentially read from the second storage unit 143, and is added to the encoder 4 via the switching unit 108. In step 7, the sector number is increased by one. On the other hand, steps 8, 9, 10, and 7 correspond to the digital audio information 117.
Is output to the encoder 4. Step 8
, A switching signal to the digital audio information is output from the system control unit 111 as the switching signal 112 to the switching unit. In step 9, the first storage means
A read command is output to 141. In step 10, an instruction for generating an address for reading digital audio information for one sector sequentially from the head of the sector is output to the first address generating means. As a result, digital audio information for one sector is sequentially read from the first storage unit 141 and is added to the encoder 4 through the switching unit 108. In step 7, the sector number is increased by one. In the above steps 3 to 10, the system control means 11
1 checks the sector number recorded on the disk in advance, and if the sector number is N, the attribute information is set to N + 1, N +
If N + 3, the first storage information 141, the first address generation means 142, the second storage means 143, and the second address generation means 144 are provided so that the digital audio information is supplied to the encoder 4 one sector at a time. Control.

In FIG. 2, recording / reproducing to / from the disk is performed in units of the sector. As the size of the sector, for example, 51
2 bytes. The output signal 110 from the encoder 4 is a signal recorded on the disk. Reference numeral 133 denotes a digital information block. In this case, the digital audio information 103 for one frame is recorded as a unit in three sectors, and the digital information block size is three sectors. Reference numeral 132 denotes an attribute block corresponding to the digital information block 133, in which the first attribute information 107 for one frame is recorded as one sector. The attribute information block size is one sector. The digital information block 133 and the attribute information block 132 are continuously and alternately recorded on the track by the system control means 111 as shown in FIG.

As described above, the input digital audio information 1 and the input time code 5 for each frame period T are stored in the attribute information block 13.
2 and the digital information block 133 are recorded, and the digital information block 133 and the attribute information block 132 are recorded in different sectors, so that post-recording is possible with one head.

In the first embodiment, digital audio information is recorded in a digital information block. However, the same applies to the case of recording digital video information or information in which digital audio, video, and data are mixed. Holds.

Further, the sizes of the sectors need not be the same, and for example, the size may be changed between the attribute information block and the digital information block. The number of sectors constituting the attribute block 132 and the information block 133 is not limited to the above configuration, and is arbitrary. This can be easily performed by changing the branch sector number in step 3 of the flowchart shown in FIG. For example, in step 3 of FIG. 3, if N = 7m, 7m + 1 (m = non-negative integer), the attribute information block is recorded, and N = 7m + 2,7m + 3,7m + 4,7m +
In the case of 5,7m + 6, if a digital information block is recorded, the attribute information block can have a 2-sector configuration and the digital information block can have a 5-sector configuration. Therefore, it is possible to make the number of sectors constituting the attribute information block constant and vary the number of sectors constituting the digital information block. When the size of digital information changes, for example, in the first embodiment, recording can be performed even when the sampling frequency or the number of quantization bits of the input digital audio information changes and the amount of information per frame changes. Becomes In this case, if the number of sectors constituting the digital information block is recorded in the attribute information block 132 or the directory area, the number of sectors constituting the digital information block can be known by referring to the attribute information block 132 or the directory area during reproduction. Becomes possible. As the directory area, for example, sector numbers 1 to 6 in FIG. 12 may be set as the directory area.

Also, the digital information block 133 and the attribute information 132
If a predetermined gap is provided between them, a margin can be given in terms of the accuracy of the alignment between the respective blocks, and therefore, even if jitter occurs due to rotation unevenness, post-recording becomes easy. The output signal in this case is indicated by 115 and the gap is indicated by 134.

Although the present embodiment is a case of continuous recording in which information is successively recorded in a continuous sector, the same applies to intermittent recording in which information is recorded at intervals of sectors. The signal recorded on the disc in this case is shown as 120. In this case, in the track pattern shown in FIG.
3,5 ... will be recorded above.

FIGS. 4 and 5 show a second embodiment of the present invention. 4th
In the figure, 1, 4, 5, 6, 7, 13 to 18 are the same as the conventional example shown in FIG. Also, 101,103,105,106,107,112,141,142,
Reference numerals 143 and 144 are the same as those in the first embodiment of the present invention shown in FIG. The system control means 310 controls the spindle control means 17, the traverse control means 16, the actuator 15, the encoder 4, and the attribute information generation means 105 as in the first embodiment of the present invention shown in FIG.

The input digital audio information 1 is applied to an input buffer 101 and demodulated there. First identification flag generating means 30
1 is a first identification flag 302 indicating a digital information block according to a command from the system control means 310.
And supplies it to the first identification flag adding means 303.
The first identification flag adding means 303 adds the first identification flag 3 to the digital audio information 103 output from the input buffer 103.
02 is added to the first storage means 141. 304 is first
Is digital information output from the storage means 303.

The input time code 5 is demodulated by the time code reading means 6 and supplied to the attribute information processing means 106. The attribute information generating means 105 is composed of a panel of the recording apparatus, switches on the panel, and a microcomputer. The attribute information generating means 105 generates attribute information such as song number information and date from a signal generated by pressing the switch. Is the same as the conventional example shown in FIG.
The attribute information 107 output from the attribute information processing means 106 is sent to the second identification flag adding means 307. The second identification flag generating means 305 generates a second identification flag 306 indicating that the block is an attribute information block according to a command from the system control means 310 and supplies the second identification flag 306 to the second identification flag adding means 307. 307 is a second identification flag 306 in the first attribute information 107
And sends it to the second storage means 143. The second address generating means 144 generates an address of the second storage means 143. The output 308 from the second storage unit 143 is the second attribute information. Numeral 309 is digital information output from the switching means 108, 310 is system control means, and 311 is an output signal from the encoder. The digital voice information 304 and the second attribute information 308 are switched in the same manner as in the flowchart in the first embodiment of the present invention shown in FIG.

The operation of the second embodiment of the present invention will be described below with reference to FIGS. In FIG. 5, if it is assumed that the input digital audio information 1 is divided into frames having a frame period of T, the input buffer 101 compresses the time axis into digital audio information 103. A first identification flag 302 is added to the digital voice information 103 by a first identification flag adding means 303 to obtain digital information 304. On the other hand, the time code 5 in units of the frame period T accompanying the input digital audio information 1 is read by the reading means 6 and becomes a group of information together with attribute information such as song number information and date in the attribute information processing means 106. Is output as the attribute information 107. A second identification flag 306 is added to the first attribute information 107 by the second identification flag adding means 307 to obtain second attribute information 308. The digital information 304 and the second attribute information 308 are switched by the switching means 108, and the output 309 is supplied to the encoder 4 to obtain the encoder output 311. A fifth information block 333 is a digital information block. In this case, the digital audio information 103 and the first identification flag 302 are configured as a unit of three sectors. Reference numeral 332 denotes an attribute block corresponding to the digital information block 333, and the attribute information identification code 306 and the first attribute information 107 are configured as one sector. As in the first embodiment of the present invention, the digital information block size is 3 sectors and the attribute information block size is 1 sector.

The digital information block and the attribute information block are continuously and alternately recorded on the track by the system control means 310 as shown in FIG. In addition, if a predetermined gap is provided between the digital information block 333 and the attribute information 332, the position of each block can be easily adjusted when dubbing is performed according to the first embodiment of the present invention. Same as the example.

Although the present embodiment is a case of continuous recording in which information is successively recorded in a continuous sector, the same applies to intermittent recording in which information is recorded at intervals of sectors.

In the above-described second embodiment of the present invention, a case has been described in which both the first identification flag 302 and the second identification flag 306 are added. However, it is possible to achieve the purpose of identification by using only one of them. .

Further, the first identification flag generating means 301, the first identification flag adding means 303, the second identification flag generating means 305, the second
The identification flag adding means 307 can be constituted by a simple logic circuit such as a microcomputer and an addition / subtraction circuit.

A third embodiment of the present invention will be described with reference to FIGS. FIG. 6 shows a case where a correspondence flag indicating the correspondence between the digital information block and the attribute information block is added to the attribute block. In FIG. 6, 1,4,5,6,7,13-18
Is the same as the conventional example shown in FIG. Also, 101,103,10
5, 106, 107, 112, 141, 142, 143, 144 are the same as those of the first embodiment of the present invention shown in FIG. 1, and 301, 302, 303, 304, 305, 30
6, 307, 308 are the same as the second embodiment of the present invention shown in FIG. The system control means 506 comprises a spindle control means 17, a traverse control means 16, an actuator 15, an encoder 4, an attribute information generation means 105, and a first identification flag generation means, as in the second embodiment of the present invention shown in FIG. Means 301 and the second identification flag generating means 305 are controlled. The input digital audio information 1 is applied to an input buffer 101 and demodulated there. The first identification flag generating means 301 generates a first identification flag 302 indicating that the block is a digital information block, and supplies it to the first identification flag adding means 303. The first identification flag adding unit 303 adds the first identification flag 302 to the digital audio information 103 output from the input buffer 103 and writes the digital audio information 103 into the first storage unit 141. 304 is digital information output from the first storage means 141.

The input time code 5 is demodulated by the time code reading means 6 and supplied to the attribute information processing means 106. The attribute information generating means 105 is composed of a panel of the recording apparatus, switches on the panel, and a microcomputer, and generates attribute information such as song number information and date from a signal generated by pressing the switch. This is the same as the first embodiment of the present invention shown in FIG. The attribute information 107 output from the attribute information processing means 106 is sent to the second identification flag adding means 307. The second identification flag generation means 305 generates a second identification flag 306 indicating that the block is an attribute information block, and supplies it to the second identification flag adding means 307. 307 adds a second identification flag 306 to the first attribute information 107 and supplies it to the corresponding flag adding unit 502 as second attribute information 308. Correspondence flag generation means 501 generates a correspondence flag 502 indicating a correspondence between the digital information block and the attribute information block according to a command from the system control means 506,
It is supplied to the corresponding flag adding means 503. The corresponding flag adding unit 503 adds the corresponding flag 502 to the second attribute information 308 and sends it to the second storage unit 143. Second address generating means 144
Generates the address of the second storage means 143. The output 504 from the second storage unit 143 is the second attribute information. The digital voice information 304 and the third attribute information 504 are switched in the same manner as in the conventional example shown in FIG. Digital audio information
304 and the third attribute information 504 are switched by the switching means 108 to obtain an output 505. 506 is a system control unit, and 507 is an output signal from the encoder 4.

FIG. 7 is a diagram showing the timing of the third embodiment of the present invention. A correspondence flag 502 is added to the third attribute information 504. Reference numeral 532 denotes an attribute block corresponding to the digital information block 533.
2. The first attribute information 107 is configured as one sector.
Further, similarly to the first and second embodiments of the present invention,
The digital information block size is 3 sectors, and the attribute information block size is 1 sector. The digital information block and the attribute information block are stored in the system control unit 50.
6, recording is continuously and alternately performed on the track as shown in FIG. In addition, if a predetermined gap is provided between the digital information block 533 and the attribute information 532, the post-recording operation can be easily performed in terms of the accuracy of positioning between the blocks. This is the same as the embodiment. Although the present embodiment is a case of continuous recording in which information is successively recorded in a continuous sector, the same applies to intermittent recording in which information is recorded at intervals of sectors.

In the third embodiment, the case where the correspondence flag 502 indicating the correspondence between the digital information block and the attribute information block is added to the attribute block has been described. It is possible to achieve the effect. In the third embodiment, the case where the corresponding flag is recorded together with the digital information block and the attribute information block has been described. However, the same effect can be obtained when only one of them is recorded. .

A fourth embodiment of the present invention will be described with reference to FIGS. FIG. 8 shows the configuration of a fourth embodiment of the present invention, which is a configuration for reproducing a disk recorded according to the second embodiment of the present invention. In FIG. 8, 14 to 21
This is the same as the conventional example shown in FIG. Identification flag extraction means 70
1 is the first from the sector information 702 output from the decoder 21.
And outputs the switching signal 711 by extracting the identification flag 302 or the second identification flag 306. 700 is the output sector information from the decoder 21 and the switching means 703 is the first from the output sector information 700.
The digital audio information 704 and the attribute information 707 are switched and output according to the identification information 302 and the second identification information 306 of the digital signature.
The digital audio information 704 is output as output digital audio information 706 through an output buffer 705. The time code output means 708 outputs a time code 709 which is a part of the attribute information 707. 710 is system control means, means 703
Is control information for. FIG. 9 is a reproduction timing chart according to the configuration shown in FIG. In FIG. 9, after the output signal 20 from the RF amplifier is reproduced, the first identification flag
302 or the second identification flag 306 is extracted by the extracting means 701. The switching means 703 switches and outputs the digital audio information 704 and the attribute information 707 according to the first identification information 302 and the second identification information 306, and can obtain the output digital audio information 706 and the output time code 709.

A fifth embodiment of the present invention will be described with reference to FIGS. FIG. 10 shows a part of the digital audio information and the attribute information based on the correspondence flag indicating the correspondence between the digital information block and the attribute information block when the disk recorded according to the third embodiment is reproduced. The figure shows a case in which time code and synchronous reproduction are performed. In FIG. 10, 14 to 21
Is the same as the conventional example shown in FIG. Also, 700-706,7
08,711 is the same as the fourth embodiment of the present invention shown in FIG. The correspondence flag reading unit 803 reads the correspondence flag 502 indicating the correspondence between the digital information block and the attribute information block from the sector information 802 output from the decoder 21 and outputs the synchronization information 804. The attribute information 805 obtained by switching by the switching means 703 is converted by the synchronization control means 806 based on the synchronization information 804 into digital audio information 704.
And reproduces the time code 809. FIG. 11 is a reproduction timing chart according to the configuration shown in FIG. Eleventh
In the figure, after the signal 20 output from the RF amplifier is reproduced, the first identification flag 302 or the second identification flag 3
06 is extracted by the extracting means 701 and the digital information 704 is extracted.
And the attribute information 805 are switched and output. The corresponding flag 502 is read by the corresponding flag extracting unit 803, and the time code 809 synchronized by the synchronization control unit 806 is output.

In the first to fifth embodiments, digital audio information is recorded. However, as described in the first embodiment, digital video information or digital audio, video, and data are stored in the digital information block. The same is true when mixed information is recorded, and the above invention is effective. Although the above-described first to fifth embodiments have described the case of continuous recording in which information is continuously recorded in continuous sectors, as described in the first embodiment, intermittent recording in which information is skipped in sectors is performed. The same holds true for recording, and it goes without saying that the present invention is effective.

As described above, in the recording apparatus of the present invention, the input digital information, for example, digital audio information and the attribute information associated with the input digital audio information, for example, the time code, are stored in an information block configured in sector units. Can be recorded separately. For example, after recording audio and video information, it is possible to post-record time information to an attribute information block with one head, which is extremely effective for editing work. Also, by recording song number information and a code indicating the beginning of the song in the attribute information sector, it is possible to easily post-record. Therefore, it is possible to easily perform the post-recording even in the one-head system, and to configure an efficient editing system. As a result, the system configuration is simplified, and only one expensive optical head system for recording is required, so that it can be used in a wide range of applications irrespective of consumer use or business use. In addition, by providing a gap between the digital information block and the attribute information block, it is possible to easily perform the post-recording even when there is jitter due to rotation unevenness. further,
A digital information block having a variable number of sectors can be formed and the number of sectors can be recorded. Therefore, the size may be changed between the attribute information block and the digital information block. For example, it is possible to make the number of sectors constituting the attribute information block constant and vary the number of sectors constituting the digital information block. Therefore, when the size of the digital information changes, for example, even when the sampling frequency or the number of quantization bits of the input digital audio information changes and the amount of information per frame changes, it is possible to record one frame. It can be used even when the amount of digital information to be changed changes. Further, since a flag for identifying the digital information block and the attribute information block can be recorded, the attribute information block can be recorded with high accuracy without making a mistake between the attribute information block and the attribute information block. Further, it is important to record while maintaining the temporal correspondence between the input digital audio information and the input time code at the time of recording. According to the present invention, the digital information block recorded in a separate sector and the attribute Since a correspondence flag indicating the correspondence relationship with the block information can be added to the directory area and / or the digital information block and / or the attribute information block, the correspondence between the input digital audio information and the input time code at the time of recording can be obtained. Recording can be performed while maintaining a temporal correspondence. Also, when playing back a disc on which digital audio information and time code associated with the digital audio information or user-specific information are recorded,
Since the digital audio information and the time code can be separated and output separately, and the digital audio information and the time code can be synchronized, the time of the digital audio information and the time code at the time of recording can be obtained. Relationships can be completely reproduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of the present invention, FIG. 2 is a timing diagram showing recording timing of the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. 4 is a block diagram showing the configuration of the second embodiment of the present invention, FIG. 5 is a timing chart showing the recording timing of the second embodiment of the present invention, FIG. FIG. 6 is a block diagram showing the configuration of a third embodiment of the present invention, FIG. 7 is a timing diagram showing recording timing of the third embodiment of the present invention, and FIG. 8 is a fourth embodiment of the present invention. FIG. 9 is a timing chart showing the recording timing of the fourth embodiment of the present invention, FIG. 10 is a block diagram showing the configuration of the fifth embodiment of the present invention, and FIG. FIG. 12 is a timing chart showing recording timing according to a fifth embodiment of the present invention, and FIG. Schematic diagram showing the track pattern, Fig. 13 is a block diagram showing a structure of a conventional example, FIG. 14 is a timing diagram showing a recording and reproducing timing in the structure of a conventional example. 8 ... attribute information generating means, 9 ... attribute information processing means, 19
... Encoder, 21 Decoder, 107 First attribute information, 108 Switching means, 141 First storage means, 142
... First address generation means, 143 second storage means, 144 second address generation means, 301 first identification flag generation means, 303 first identification flag addition means, 305... Second identification flag generating means, 306... Second identification flag, 307... Second identification flag adding means, 308.
... second attribute information, 501 ... corresponding flag generating means, 502 ...
... Corresponding flag, 503... Corresponding flag adding means, 504... Third attribute information, 701... Identification code extracting means, 803... Corresponding flag extracting means, 806.

Continuation of the front page (56) References JP-A-1-221073 (JP, A)) JP-A-63-313384 (JP, A) JP-A-61-92489 (JP, A) JP-A-60-229565 ( JP, A) JP-A-1-260673 (JP, A)

Claims (10)

(57) [Claims] 1. A recording apparatus for recording digital information in a sector obtained by dividing a concentric or spiral track, comprising: attribute information generating means for generating attribute information corresponding to the digital information; Switching means for switching between attribute information generated by the information generating means, an encoder for adding an error correction parity to an output of the switching means, and a sector timing generating means for generating a sector timing signal indicating a sector delimiter; A digital information block having M (M: positive integer) sectors for recording the digital information as one block for the switching means based on a sector timing signal generated by the sector timing generating means; N (N: positive integer) sectors for recording Recording apparatus having a system control unit for supplying a switching signal to switch the attribute information block. Means for generating a first identification flag indicating the digital information block; first identification flag adding means for adding the first identification flag to the digital information block; 2. The recording apparatus according to claim 1, further comprising: means for generating a second identification flag shown; and second identification flag adding means for adding the second identification flag to the attribute information block. 3. The recording apparatus according to claim 1, further comprising said system control means for supplying a number M of sectors constituting said digital information block to said attribute information generating means. 4. The recording apparatus according to claim 1, further comprising: the system control means for recording the number of sectors M in a directory area based on a sector timing signal generated by the sector timing generation means. 5. A means for generating a correspondence flag indicating a correspondence between the digital information block and the attribute block information; and storing the correspondence flag in a directory area based on a sector timing signal generated by the sector timing generation means. The recording apparatus according to claim 1, further comprising the system control unit that records data in a recording medium. 6. A means for generating the correspondence flag indicating the correspondence between the digital information block and the attribute information block, and adding the correspondence flag to the digital information block and / or the attribute information block. 5. The recording apparatus according to claim 1, further comprising a corresponding flag adding unit. 7. The recording apparatus according to claim 1, further comprising attribute information processing means for adding time attribute information of said digital information to said attribute information generated by said attribute information generating means. 8. A recording method according to claim 1, wherein a gap is provided between said digital information block and said attribute information block.
8. The recording device according to 7. 9. A means for reading information on a sector from a recording medium recorded by the recording apparatus according to any one of claims 1 to 8, and the first identification flag or the first identification flag based on the read sector information. A reproducing apparatus comprising: extracting means for extracting a second identification flag; and switching means for selecting the digital information and attribute information corresponding to the digital information according to the first or second identification flag. 10. A means for reading information on a sector from a recording medium recorded by the recording apparatus according to any one of claims 1 to 8, and a correspondence flag indicating a correspondence between a digital information block and an attribute information block. A reproducing apparatus comprising: an extracting unit for extracting; and a synchronous control unit for synchronously reproducing the digital information block and the attribute information block based on the correspondence flag.