JP2989699B2 - Disk recording device and disk reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a disk or a magnetic tape has been used as a medium for recording audio and video. For example, a compact disc (CD) is well known as a read-only disc on which audio is recorded. Recently, write-once and rewritable optical disks have also been developed.
On the other hand, a digital audio tape (DAT) is well known as a magnetic tape. Further, recently, other discs for recording video as digital signals have been developed.

FIG. 11 is a diagram showing an example of a recording track pattern on a conventional rewritable optical disk. FIG. 12 is a diagram showing a configuration of a conventional optical disk recording / reproducing apparatus used for this rewritable optical disk.
In FIG. 11, a rewritable optical disc 1 is provided with a spiral track 2. On the track 2, sectors 3 for recording certain information are continuously formed, and information is recorded by a pit string of each sector. Each sector 3 has sector addresses # 0, # 1, # 2,.
n is attached. Each sector 3 is a minimum unit of a signal in which a digital data group is recorded. The digital signal is recorded continuously from the inner circumference of the track 2 to the outer circumference. Also, the rotation of the disk 1 is a so-called CLV
(Constant Linear Veocity) control is performed so that the linear velocity becomes constant.

[0004] A case where digital audio information and time information are recorded on a conventional disk in units of sectors will be described below. First, as a recording system, in FIG. 12, as input digital audio information 11, a serial signal which is normally bi-phase modulated so as to include a self-clock is used. The input buffer 12 separates the self-clock from the input digital audio information 11, outputs digital audio information 13 obtained by demodulating the original audio information, and supplies the digital audio information 13 to the encoder 14. On the other hand, the time information generating means 15 generates time information 16 to be added to the input digital audio information 11 and supplies it to the encoder 14. The encoder 14 adds a parity signal for error correction to the digital audio information 13 and performs interleaving. Further, the encoder 14
A signal to be recorded on track 2 on disk 1 is generated. This interleaved recording signal is subjected to, for example, EFM (Eight to Fourteen Modulation) and added with a synchronization signal and time information 16.

[0005] An encoder output signal 17 output from the encoder 14 is applied to a laser driving means 18. The laser driving unit 18 modulates a laser beam emitted from the optical head 19 to the optical disc 1 based on the encoder output signal 17. The actuator 20 performs tracking control by minutely displacing the optical head 19 mounted thereon. The traverse control means 21 displaces the optical head 19 and the actuator 20 in the radial direction of the optical disc 1 from the inner circumference to the outer circumference. The spindle control means 22 rotates the optical disc 1 so that the linear velocity becomes constant. The system control means 23 systematically controls the actuator 20, the traverse control means 21, and the spindle control means 22. The system clock generator 24 also supplies the sector clock 25 to the time information generator 15, encoder 14, and system controller 23.

On the other hand, in the reproducing system, the signal read from the optical head 19 is amplified by the RF amplifier 26. The output signal 27 from the RF amplifier 26 is
, Where it is EFM demodulated, error corrected, and de-interleaved. The digital audio information 29 demodulated from the decoder 28 is applied to an output buffer 30, where the digital audio information 29 is bi-phase modulated again to output output digital audio information 31.

FIG. 13 is an explanatory diagram showing an encoder output signal 17 output from the encoder 14. As shown in this figure, each sector 3a, 3b of a certain track 2
The information held therein includes a synchronization signal 35, digital audio information 13, time information 16, and parity 36. In general, the time information 16 is recorded in units of a recording sector cycle, and is composed of, for example, (hour, minute, second, sector). Therefore, as shown in FIG. 13, the time information 16 is usually recorded as a pair for each of the sectors 3a, 3b.

[0008]

However, in the above-described conventional configuration, the time information 16 is sequentially recorded in the same sector 3 together with the digital audio information 13, so that the optical disk 1
This is inconvenient when rewriting time information. For example,
Editing two audio files and adding continuous time information in a specific file as one audio file; rewriting discontinuous time information into continuous time information; When rewriting the time information with time as a starting point, inconveniences arise. In such a case, the conventional disk recording / reproducing apparatus has the following problems since time information and digital audio information are recorded in the same sector.

(1) The entire file on the optical disk is rewritten, and the actual time required for the rewriting cannot be ignored. (2) Since error correction is performed in units of sectors of the optical disk, when rewriting time information, sector information of the optical disk is read in advance, error correction is performed in units of each sector, only time information is rewritten, and error correction is performed again. It is necessary to add parity for recording. As a result, the price of the apparatus has risen, and the signal processing time has become longer, which has been extremely inconvenient.

The inventions of claims 1 to 4 of the present application have been made in view of such a conventional problem. Only time information is recorded in advance, and audio and video information are recorded later. It is an object of the present invention to provide a disk recording apparatus capable of easily rewriting time information when rewriting time information.

It is another object of the present invention to provide a disk reproducing apparatus capable of reproducing a disk recorded in this way and synchronously reproducing audio or video information and time information.

[0012]

According to the first aspect of the present invention, an input audio or video information and an input audio or video information are recorded on a disk having a plurality of sectors obtained by dividing concentric or spiral tracks. A disk recording apparatus for recording corresponding time information, comprising: a time address information table generating means for generating a time address information table indicating a relationship between a sector address added to a sector and time information; Means for storing time address information table storing means for holding data of the means, and input signal switching means for outputting data of input audio or video information and data of the time address information table every predetermined number of sectors. Is what you do.

According to a second aspect of the present invention, there is provided a time information generating means for generating time information corresponding to input audio or video information recorded in each sector, and a starting point of the time information generated by the time information generating means. And time information initial value setting means for setting an arbitrary value for input audio or video information.

According to a third aspect of the present invention, there is provided a time code reading means for providing time information obtained by reading a time code inputted from the outside to a time address information table generating means. is there.

The invention according to a fourth aspect of the present invention is characterized by comprising time information converting means for converting time information output from the time code reading means into time information in units of each recording sector cycle of the disk. Things.

According to a fifth aspect of the present invention, audio or video information recorded on a disk having a plurality of sectors obtained by dividing concentric or spiral tracks and time information corresponding to the audio or video information are reproduced. An output signal switching means for switching and outputting audio or video information and a time address information table for each predetermined number of sectors from reproduced information, and a time address information table obtained from the output signal switching means. Time information reproducing means for reproducing time information corresponding to audio or video information.

According to a sixth aspect of the present invention, there is provided a time code output means for converting time information from a time address information reproducing means into a time code and outputting the time code, a reproduced time code and reproduced audio or video information. And a synchronizing means for synchronizing.

[0018]

According to the first aspect of the present invention having such features, audio information or video information is recorded in continuous sectors of the optical disk via the input signal switching means. Also, time information corresponding to audio information or video information of each sector,
It is extracted using the time address information table of the time address information table generating means. The time information is recorded on the optical disk via the input signal switching means so as to collectively store the time information in a specific sector. Then, the added sector address and the input audio or video information can be recorded in separate sectors.

According to the second aspect of the present invention, the starting point of the time information generated by the time information generating means is set to an arbitrary value. Generate a time address information table indicating a relationship between a sector address assigned to a sector for recording input audio or video information and time information generated by the time information generating means, and convert the input audio or video information and time information. It allows recording in a separate sector.

According to the invention of claim 3 of the present application, time information is read from the time code inputted from the outside by the time code reading means, and this signal is supplied to the time address information table generating means. The time address information table generating means generates a time address information table indicating a relationship between a sector address added to each sector for recording the input audio or video information and the input time information. Then, the input audio or video information and the time address information table can be recorded in separate sectors.

According to the invention of claim 4 of the present application, the input time information is converted into the time information having the recording sector period by the time information converting means. A time address information table showing a relationship between a sector address added to a sector for recording input audio or video information and time information in units of a recording sector period obtained by converting the input time information is generated.
Then, the input audio or video information and the time address information table can be recorded in separate sectors.

According to the invention of claim 5 of the present application, claim 1
The information on the optical disk recorded by the inventions of (1) to (4) is reproduced, and the audio or video information and the time address information table are separated from the information reproduced by the output signal switching means.
Then, time information is reproduced from the time address information table.

According to a sixth aspect of the present invention, in the disk reproducing apparatus according to the fifth aspect, the time information reproduced by the time address information reproducing means is converted into a time code, and the reproduced time code is converted. And the reproduced audio or video information can be synchronized.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a disk recording apparatus according to a first embodiment of the present invention. FIG.
FIG. 4 is a timing chart of signals recorded by the disk recording device. Optical disc 1 used in recording apparatus of the present invention
Is the same as that shown in FIG. 11, and sector addresses # 0, # 1, # 2,.
It is assumed that #n is added. For example, the capacity of each sector 3 is 1 kbyte, and the repetition frequency of the sector is 200H.
z, that is, the sector period is 1/200 second.

In FIG. 1, the same parts as those of the conventional example will be described with the same reference numerals. The input buffer 12 is for demodulating the input digital audio signal 11 and outputting the digital audio information 13, and the output is given to the input information storage means 41. The input information storage means 41 temporarily holds the digital audio information 13, and the digital information 42 stored here is given to the switching circuit 43. Switching circuit 4
Reference numeral 3 denotes a circuit for switching a signal of the input information storage means 41 and a signal of the time address information table storage means 44 by a switching signal of the switching control means 46. Here, the switching circuit 43
And the switching control means 46 achieves the function of the input signal switching means for voice information and time information. Here, it is assumed that the switching timing is switched every predetermined number of sectors of the optical disc 1.

The time address information table storage means 44 stores a time address information table described later. The switching circuit 43 switches one of the time address information 45 output from the time address information table storage means 44 and the digital information 42 output from the input information storage means 41 and inputs the same to the encoder 14. The encoder 14 adds a parity signal for error correction to the digital audio information 13 recorded in each sector 3 of the disk 1, performs interleaving, performs EFM modulation, and adds a synchronization signal. Further, since the encoder 14 records the time address information 45 in the specific sector 3,
A parity signal for erroneous correction is added or interleaved as in the case of the digital audio information 13 to this information signal, and EFM modulation is performed to add a synchronization signal. The output of the encoder 14 is provided to a laser driving unit 18.
Laser driving means 18 is based on encoder output signal 17,
This is a circuit for modulating laser light emitted from the optical head 19.

On the other hand, the time address information table generating means 47 stores the digital audio information 13 to be recorded on the optical disc 1.
In contrast, the absolute time indicating the cumulative recording elapsed time of each audio file from the first sector 3 and the program time indicating the time when the digital audio information recorded in each audio file is recorded from the first sector of each audio file. And are created respectively. The time address information table generating means 47 also functions to assign a sector address of each sector 3 corresponding to the absolute time or the program time. The time information generating means 15 receives the input digital voice information 1
This is to generate time information 16 to be added to 1, and outputs the output to a time address information table generating means 47. The initial value setting means 48 sets the time initial value of the digital audio information in the time information generating means 15.

Next, the address decoder 49
A decoder that decodes a sector address from a reproduced RF signal reproduced from the decoder, and its output is supplied to a time address information table generating means 47. On the other hand, as a mechanism for driving the optical disc 1, an actuator 20, a traverse control unit 21, and a spindle control unit 22 are provided. These control means are the same as those in the conventional disk recording / reproducing apparatus described above.

Next, the system control means 50 systematically controls the actuator 20, the traverse control means 21, and the spindle control means 22, and further gives an instruction to the initial value setting means 48 for setting an initial value of time information. . The system clock generating means 24 is provided in the disk recording apparatus of the present embodiment and supplies a clock to each circuit. That is, the clock of the system clock generator 24 is supplied to the encoder 14, the switching controller 46, the time address information table generator 47, the system controller 50, and the time information generator 15, respectively.

The operation of the disk recording apparatus of the first embodiment configured as described above will be described with reference to FIGS. FIG. 2 is a timing chart of each signal showing the operation of the first embodiment. First, the switching control means 46 controls the switching circuit 4 so that the digital information 42 can be recorded in each sector 3.
3 is given a switching signal. Once the optical disk 1
The sector address is decoded by the address decoder 49 from the RF signal reproduced from. As shown in FIG. 2, the sector clock at the sector address #n is represented as S (n).
Digital information 42 corresponding to sector clock S (n)
Is D (n), D (n) is the next sector clock S
At (n + 1), encoding processing such as error correction addition and interleaving is performed, and further delayed sector timing S (n
+2) is recorded in a predetermined sector 3.

On the other hand, the correspondence table between the time information and the sector address is created according to the flowchart shown in FIG. That is, the time information corresponding to the digital audio information 13 is obtained from the time information generating means 15. The operation is started and time information corresponding to the sector clock S (n) is
If (n) is set, the time information T (n) is read from the time information generating means 15 in step 51. Next, proceeding to step 52, the time address information table generating means 47 reads the signal of the sector address sent from the address decoder 49. Then, the process proceeds to a step 53, wherein the time address information table generating means 47 calculates a sector address of the recording sector corresponding to the time information T (n). Since the digital information D (n) is recorded by the sector clock S (n + 2), the digital audio information D (n) corresponding to the time information T (n) is read assuming that the delay amount corresponds to two sector timings. 2 is added to the sector address #n, and the sector address corresponding to the time information T (n) is set to #n.
+2.

In the next step 54, time information T (n
+1), T (n + 2),... And sector address # n +
3, # n + 4,..., That is, a time address information table is created. This time address information table is stored in the time address information table storage means 44. The setting of the initial value of the time information is performed at an arbitrary time according to a command from the system control unit 50.
For example, when recording music, the output of the time information initial value setting means 48 is set to 0 every time at the beginning of the music. In the time address information table, the sector address corresponding to the beginning of the song is # 0, and the time information monotonically increases thereafter.
That is, the program time of the audio file is recorded. Next, at the beginning of the recording area of the optical disc 1, time information that monotonically increases, that is, absolute time is recorded.

FIG. 4 shows a time address information table in the first embodiment. The amount of data required for this time address information table will be calculated. Assuming that both the absolute time and the program time are expressed in a binary-coded decimal system, three bytes are assigned to hours, minutes, and seconds, and two bytes are assigned to a sector, resulting in a total of five bytes. When 10 bytes are allocated to the total of the absolute time and the program time, and 3 bytes are allocated to the sector address, a total of 13 bytes is obtained for one sector. One sector having a capacity of 1 kbyte stores time address information for 78 sectors. Can be. Here, in order to simplify the calculation, the time address information table is recorded every 50 sectors.

From the above relationship, the first song (recording time 3 minutes)
Altogether, 36000 to record digital information
7 to record the sector, time address information table
Each requires 20 sectors. FIG. 4 shows sector addresses when recording the absolute time and the program time of digital audio information. The time address information thus obtained is sequentially sent to and stored in the time address information table storage means 44. The time address information 45 is switched by the switching circuit 43 in accordance with an instruction of the switching control means 46 at predetermined intervals. On the other hand, the encoder 14
Performs addition of parity for error correction to the digital information 42, performs signal interleaving, further performs EFM modulation, and adds a synchronization signal. Then, the laser driving means 18 records a predetermined mark pattern on the spiral track 2 on the disk 1.

FIG. 5 shows an encoder output signal 17 output from the encoder 14 in the disk recording apparatus of the first embodiment. As shown in FIG.
42x, and the time address information tables 45a, 45b,... are switched and recorded every predetermined number of sectors. Here, a time address information table is recorded at sector address # 0, and sector addresses # 1 to # 50 are recorded.
And the next time address information table is recorded at sector address # 51. That is, the time address information is recorded every 50 sectors. In this case, it is convenient during reproduction if a flag indicating that the recorded content is the time address information is recorded in the sectors # 0 and # 51 for recording the time address information.

As described above, since the digital information and the time address information table are recorded in separate sectors, when rewriting the time information, only the sector in which the time address information is recorded need be rewritten. In this case, if the area of the sector to be recorded in the time address information table is expanded, the time information can be rewritten collectively, and the rewriting time can be further reduced. For example, the time address information table and the digital audio information may be handled as separate files. In this case, the time information can be rewritten in 1/50 of the sector time as compared with the conventional disk recording / reproducing apparatus. If only one of the program time and the absolute time is recorded, it becomes 1/100 as compared with the conventional rewriting time.

In the first embodiment, the time address information table and the digital information need not be recorded continuously, but may be recorded at distant track positions on the optical disk 1. Further, the time address information table may be recorded in the directory area of the optical disc 1. In this case, the directory may store the file number of each file and the time address information table as a pair. Further, the time information and the time address may record a table of only the beginning and end of the file. That is, it is only necessary to have a table indicating the head sector address of the file and the time corresponding to the head address, and the end address and the time corresponding to the end address. In this case, there is an advantage that the storage capacity of the time address information table is reduced.

Next, a second embodiment of the optical disk recording apparatus of the present invention will be described with reference to FIG. FIG. 6 is a block diagram showing the configuration of the optical disk recording device according to the second embodiment. In the figure, an input buffer 12, an encoder 1
4, laser driving means 18, optical head 19, actuator 20, traverse control means 21, spindle control means 22, system clock generating means 24, input information storage means 41, switching circuit 43, time address information table storage means 44, switching control The means 46, the time address information table generating means 47, and the address decoder 49 are the same as those in the first embodiment, respectively, and a description thereof will be omitted.

The difference from the first embodiment is that a time code reading means 60 is provided instead of the time information generating means 15 of FIG. The time code reading means 60 receives an SMPTE (Society of Motion Picture) input from the outside.
ture and Television Enginineers) Timecode 61
(Non-drop frame with a frequency of 30 Hz), and a time information 62 equivalent to the time information 16 in FIG.
Is given to the time address information table generating means 47. In this case, the SMPTE time code 61 is 0: 0: 0
It is assumed that recording starts from the frame and starts from the sector at the address # 1 of the recording sector. Except that time information input from the outside is used, the operation of the second embodiment of the present invention is the same as that of the first embodiment. FIG. 7 shows a time address information table generated by the time address information table generating means 47 of this device. In FIG. 7, sector addresses # 0, # 51, # 102, # 153, # 204,.
A time address information table.

Next, a third embodiment of the present invention will be described. FIG. 8 is a block diagram showing the configuration of the optical disk recording apparatus according to the third embodiment. The same parts as those of the first and second embodiments are denoted by the same reference numerals, and the description is omitted. Here, the first
A time code reading means 70 and a time information converting means 72 are provided instead of the time information generating means 15 of the embodiment. The time code reading means 70 is a circuit for reading an externally input SMPTE time code 71,
The time information converting means 72 converts the SMPTE time code into time information in units of a sector cycle of the optical disk 1. For example, Japanese Patent Application No. Sho 6
The method disclosed in JP-A-3-24229 can be used. In FIG. 8, an SMPTE time code 71 input from the outside is read by a time code reading means 70 and is converted by a time information converting means 72 into time information 73 in units of a recording sector cycle. 47. The operation of the third embodiment of the present invention is the same as that of the first embodiment except that time information obtained by converting time information input from the outside is used.

FIG. 9 is a time address information table generated as a result. In FIG. 9, a table showing a relationship between a time code having a recording sector and a sector address is obtained. Note that the second and third embodiments of the present invention
When MPTE time code is input from outside, EBU (Europian Broadcasting Union) or FIL
The same applies to the case where an M-standard time code is input. In FIG. 7, since the frame frequency of the SMPTE time code is 30 Hz, the SM recorded in the sector is
The frame repetition of the PTE time code is 0 to 29. On the other hand, in FIG. 9, since the minimum unit of the recording time is a recording sector, 0 to 199 are repeated.

An optical disk reproducing apparatus according to a fourth embodiment of the present invention will be described with reference to the block diagram shown in FIG.
The same parts as those in the first to third embodiments and the conventional optical disk recording apparatus are denoted by the same reference numerals, and description thereof will be omitted. FIG. 10 shows a configuration of an optical disk reproducing apparatus for reproducing the time information by reproducing the optical disk 1 recorded according to the first to third embodiments of the present invention. The switching control means 80 is a circuit for generating a switching signal for controlling the switching circuit 81. The decoder 28 converts the output signal 27 from the RF amplifier 26 into E
It performs FM demodulation, error correction, and de-interleaving, respectively, and its output is provided to a switching circuit 81. Here, the switching control means 80 and the switching circuit 81 constitute an output signal switching output. The switching circuit 81 separates the output signal of the decoder 28 into digital information 83 and a time address information table 84 by a switching control means 80. The signals selected here are output information storage means 85 and time address information table 84, respectively. It is provided to the reproducing means 86.

The output information storage means 85 temporarily stores digital information output from the switching circuit 81, and a signal output from the output information storage means 85 is supplied to an output buffer 87. On the other hand, the time address information reproducing means 86 obtains the correspondence between the sector address and the time information from the time address information table, and calculates the timing difference between the digital information and the time information. The output buffer 87 bi-modulates the digital information in the output information storage means 85 again and outputs the output digital audio information 88. On the other hand, the display means 89 is a time address information reproducing means 8
6 is displayed as time information in synchronism with the digital audio information 88. The synchronization means 90 is a circuit for operating the time code output means 91 in synchronization with the digital audio information 88. The time code output means 91 is a circuit for bi-phase modulating the output from the time address information reproducing means 86, and the output is output as an external output time code 92.

With the above-described configuration, the external output time code is reset at the end of each frame by the synchronization means 90, and the time information and the digital audio information are synchronously reproduced.
The display unit 89 displays time information.

The first to fourth embodiments are the operations for recording and reproducing the audio on the optical disk 1. When recording the digital video on the optical disk 1, the time address information table is similarly generated. It is possible.

[0046]

As described above, according to the present invention, since the time address information table is recorded in a sector different from the audio or video information, only the time information of the disk on which the audio or video information is recorded together with the time information is recorded. Need only be rewritten in the specific sector in which the time address information table is recorded. Therefore, the following effects can be obtained.

(1) It is possible to easily perform after-recording of time information or audio or video information.
That is, it is possible to easily realize a business use in which only time information is recorded on an optical disc in advance and audio and video information are recorded later. It is also easy to edit two audio or video files having discontinuous time information and to newly record continuous time information. In particular, according to the first and second aspects of the present invention, the initial value of the time information can be set at an arbitrary point.
It is possible to freely set the absolute time and the program time.

(2) When rewriting time information, time information can be easily rewritten. It is not necessary to perform a time-consuming procedure such as reading each sector information of an optical disk, performing error correction, rewriting only time information, and adding an error correction parity again as in the related art. For this reason, the time information can be efficiently rewritten.

(3) According to the third or fourth aspect of the present invention, a time address information table indicating a correspondence relationship between an externally input time code and each sector for recording digital audio information or digital video information is stored in a table format. It is possible to record. Therefore, it becomes very convenient for business use.

(4) According to the fifth and sixth aspects of the present invention, it is possible to reproduce the time information by reproducing the optical disk recorded by the first to fourth aspects of the present invention, and to reproduce the audio or video information and the time information. Information can be reproduced synchronously. Therefore, it is possible to reproduce the relationship between the time when the input is made and the audio or video information.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a recording timing chart in the optical disc recording device of the first embodiment.

FIG. 3 is a flowchart for creating a time address information table in the optical disc recording device of the first embodiment.

FIG. 4 is a diagram showing a time address information table in the optical disc recording device of the first embodiment.

FIG. 5 is a diagram showing recorded data of each sector on the optical disc in the first embodiment.

FIG. 6 is a block diagram showing a configuration of an optical disc recording apparatus according to a second embodiment of the present invention.

FIG. 7 is a diagram showing a time address information table in the optical disc recording device of the second embodiment.

FIG. 8 is a block diagram illustrating a configuration of an optical disc recording apparatus according to a third embodiment of the present invention.

FIG. 9 is a diagram showing a time address information table in the optical disc recording device of the third embodiment.

FIG. 10 is a block diagram showing a configuration of an optical disc reproducing apparatus according to a fourth embodiment of the present invention.

FIG. 11 is a diagram showing a track pattern of an optical disc used in the conventional example and the first to fourth embodiments of the present invention.

FIG. 12 is a block diagram illustrating an example of a conventional optical disk recording / reproducing apparatus.

FIG. 13 is a diagram showing recorded data of each sector on an optical disc used in a conventional optical disc recording / reproducing apparatus.

[Explanation of symbols]

 Reference Signs List 1 optical disk 2 track 3 sector 11 input digital audio information 12 input buffer 13 digital audio information 14 encoder 15 time information generating means 16 time information 18 laser driving means 19 optical head 20 actuator 21 traverse control means 22 spindle control means 24 system clock generating means 44 Time address information table storage means 43, 81 Switching circuits 46, 80 Switching control means 47 Time address information table generation means 48 Initial value setting means 49 Address decoder 50 System control means 60, 70 Time code reading means 72 Time information conversion means 85 Output information storage means 86 Time address information reproduction means 87 Output buffer 89 Display means 90 Synchronization means 91 Time code output means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsushi Kasahara 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hiroo Oikawa 1006 Kadoma Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (58) Investigated field (Int.Cl. ⁶ , DB name) G11B 20/12 G11B 7/00 G11B 27/10

Claims (6)

(57) [Claims] 1. A disk recording apparatus for recording input audio or video information and time information corresponding to the input audio or video information on a disk having a plurality of sectors obtained by dividing concentric or spiral tracks. A time address information table generating means for generating a time address information table indicating a relationship between a sector address added to the sector and the time information; and a time address information table holding data of the time address information table generating means. A disk recording apparatus comprising: a storage unit; and an input signal switching unit that outputs the input audio or video information data and the time address information table data every predetermined number of sectors. 2. A time information generating means for generating time information corresponding to the input audio or video information recorded in each sector; and a start point of time information generated from the time information generating means is set to the input sound or 2. The disk recording apparatus according to claim 1, further comprising time information initial value setting means for setting an arbitrary value for the video information. 3. The disk recording apparatus according to claim 1, further comprising a time code reading means for giving time information obtained by reading an externally input time code to said time address information table generating means. . 4. The apparatus according to claim 3, further comprising time information converting means for converting time information output from said time code reading means into time information in units of each recording sector cycle of said disk. Disk recording device. 5. A disk reproducing apparatus for reproducing audio or video information recorded on a disk having a plurality of sectors obtained by dividing concentric or spiral tracks and time information corresponding to the audio or video information. Output signal switching means for switching and outputting audio or video information and a time address information table from the reproduced information for each predetermined number of sectors; and outputting the time address information table obtained from the output signal switching means to the audio or video information. And a time address information reproducing means for reproducing time information corresponding to the time information. 6. A time code output means for converting the time information from the time address information reproduction means into a time code and outputting the time code, and a synchronization means for synchronizing the reproduced time code with the reproduced audio or video information. 6. The disc reproducing apparatus according to claim 5, comprising: