JP2003022620A - Disk recorder and disk recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make continuously recordable only tracks on which the same program or information of the same system is recorded among a plurality of tracks recorded on a disk type recording medium. SOLUTION: In a mini disk drive, the names of tracks of objects to be recorded are stored in a name memory before starting recording. The name of a track is given in accordance with a program or an information system to be recorded. When recording of a track of an object to be recorded is finished, the names of the tracks of objects to be recorded read from the name memory are written to a UTOC(user table of contents) stored in the memory, the track numbers of respective tracks are changed about a plurality of tracks with the same name attached among a plurality of tracks recorded on a disk type recording medium including the track of an object to be recorded so that the track numbers of the plurality of tracks continue to update the UTOC of the memory, and the updated UTOC is recorded on the mini disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording apparatus and a recording method thereof, and more particularly to a disc recording apparatus and a disc recording method capable of selecting a signal to be recorded from a plurality of signal sources.

[0002]

2. Description of the Related Art A recordable mini disc (hereinafter also simply referred to as a mini disc or MD) is a disc-shaped recording capable of digitally recording an audio signal of 74 minutes or 80 minutes as a standard on a disk having a diameter of 6.4 cm. It is a medium, and recording is performed for each song or movement, and its track order is also called a track number. In addition, the MD uses the disc title, song title (track title), and other information as the UT.
It can be recorded in the OC area, and the title, song title, etc. of the disc being reproduced are displayed on the display unit of the MD player.

In the UTOC of the MD, sectors 0 to 7 are prepared, but the required sector 0 and the optional sectors 1, 2, and 4 are used. Sector 0 shows the basic structure and the start and end addresses of each track (song), and sector 1 is the disk /
The title of each track (song) is shown by ASCII code, the sector 2 shows the recording date and time of the disc / each track (song), and the sector 4 shows the title of the disc / each track (song) by shift JIS or another language.

FIG. 6 is a diagram showing the data structure of sector 0 of the UTOC information, and FIG. 7 is a diagram showing the data structure of sector 1 of the UTOC information. In sector 0, in addition to the start address and end address of each track (song), a disc type (playback-only MD, recording MD, and hybrid M
D), the optimum laser power at the time of recording is recorded, and an 8-bit code (d1 to d8) called a used sector is recorded. Of the bits of the used sector, the fourth bit (d4) is sector 4,
The fifth bit (d5) corresponds to sector 3, the sixth bit (d6) corresponds to sector 2, and the seventh bit (d7) corresponds to sector 1. When the bit value is "1", the corresponding sector data Is present and the bit value is "0", it means that there is no data in the corresponding sector.

The pointer information of each track is indicated by P-TNOn in sector 0 and P-TNAn in sector 1. The leftmost position in sector 0 of FIG. 6 is the byte position, which is four times the numerical value shown in the figure. Pointer information P-TN of each track
The recording start position of this track is indicated by the start address (Start address) described in the byte position corresponding to On, and the recording end position of this track or part is indicated by the end address (End address). Link-P indicates whether or not there is a part following the part in the track. That is, if Link-P is 0, it indicates that the track is completed in the part, and if it is other than 0, it is pointer information indicating a part following the part.

By the way, in an MD device for recording and reproducing a mini disk, an operator can perform an editing work after recording, and when the operator performs an editing operation, the pointer information, LINK-P, etc. can be used as necessary. Is automatically changed. For the editing, erase (ERASE), division (DIVID
E), concatenation (COMBINE), and move (MOVE). The editing can be performed on a track-by-track basis or on a part-by-track basis, erasing means erasing a track, dividing means dividing a track into a plurality of tracks, and combine means connecting a plurality of tracks to form one track. The move is to change the track number. Before editing, the track number is the same as the part number, but when the combine is edited, one track is composed of multiple parts,
The number of MD tracks is less than the number of parts.

In the MD device, recording is performed while sequentially incrementing the track number from the inner circumference side to the outer circumference side.
Since reproduction is performed in the order of track numbers from the smallest track number, when reproducing an unedited MD, the reproduction head is moved while moving from the inner circumference side to the outer circumference side of the disc. On the other hand, if editing has already been performed, the parts recorded on the inner and outer circumferences of the disc may be combined into one track, so playback performed on a track-by-track basis. However, there is a problem in that the number of times the reproducing head is accessed increases and the power required for reproduction increases. In order to deal with this problem, in the MD device, it is possible to perform re-recording sequentially from the inner circumference side to the outer circumference side of the disc in track number order by referring to the UTOC information by a process called optimization. .

[0008]

However, even when a plurality of programs received by the tuner are recorded by the MD device for several days, the track numbers are given in the order in which they are recorded, and when the programs are reproduced, particularly in the reproduction order. Unless specified or edited, the tracks are played in order of track number. Therefore, after a certain specific program is recorded a plurality of times in combination with the recording of various programs, only the track on which the specific program is recorded among the plurality of tracks recorded on the MD. There was a problem that could not be played continuously. FIG. 8 is a diagram exemplifying the setting contents of conventional reserved recording. Scheduled recording (also referred to as timer recording in this specification) is performed automatically by the operator by previously specifying recording start date / time, recording end date / time, operation mode, signal source, channel, etc., as shown in FIG. The recording is done in a static manner.

FIG. 9 is a diagram showing an example of an array of information recorded on the basis of the setting of the conventional reserved recording, and shows the result of the same reserved recording being carried out for three days with the setting contents as shown in FIG. . As shown in the figure, on the first day, the information received on channel 1 and channel 2 is recorded on track 1 and track 2, respectively. Then, on the second day, it is similarly recorded on the tracks 3 and 4, and on the third day, it is recorded on the tracks 5 and 6. Then, after the track 6 is recorded, the information of channel 1 and the information of channel 7 are alternately arranged, and the operator, for example,
It was not possible to continuously play only the programs received at. As described above, in the conventional MD device, after recording the information of a plurality of programs or a plurality of systems by using the reserved recording function, for example, only the plurality of tracks in which the information of a specific program or a specific system is recorded is recorded. , There was a problem that it could not be played continuously without editing by manual operation.

The present invention has been made to solve the above problems, and an object thereof is to record the same program or the same system information among a plurality of tracks recorded on a disk-shaped recording medium. An object of the present invention is to provide a disc recording device and a disc recording method capable of continuously reproducing only tracks.

[0011]

The present invention has been made in view of the above problems, and a first invention provides a management table including recording start position information, recording end position information and track names of respective tracks. In a disk recording device for recording a disk-shaped recording medium, which is provided with a management table memory for temporarily storing and a name memory for storing the name of a recording target track, after reading the recording target track, it is read from the name memory. The name of the recording target track is written in the management table, and among the plurality of tracks recorded on the disc-shaped recording medium according to the management table, the track order of the plurality of tracks with the same name is continuous, The track order of each track is updated based on the management table, and the management table with the updated track order is stored in the management table. A disk recording apparatus to record on the disc-shaped recording medium is read out from the memory.

A second invention is the disk recording apparatus of the first invention, further comprising a timer for time management of start and end of reserved recording, and a reservation setting memory for storing setting contents of reserved recording. This is a disc recording device in which the setting contents of the reservation recording include the name of the track on which the information to be recorded is recorded.

A third invention is a disk recording apparatus according to the first invention or the second invention, wherein the disk-shaped recording medium is a mini disk and the management table is UTOC. .

According to a fourth aspect of the present invention, in the disc recording apparatus according to any one of the first to third aspects, after the recording target track is recorded, the track order of the recording target track is the same as the recording target track. It is a disc recording apparatus adapted to be arranged next to the last recorded track among the recorded tracks having a name.

According to a fifth aspect of the present invention, in the disc recording apparatus according to the fourth aspect of the present invention, when the track order of a plurality of tracks having the same track name is updated after the recording target track is recorded, the recorded tracks are old. It is a disk recording device in which the track order is determined in the order of recording.

A sixth aspect of the invention is a disk recording method for managing recording on a disk-shaped recording medium by storing a management table containing recording start position information, recording end position information and track name of each track in a memory. Storing the track name of the recording target track in the memory; searching the track having the same track name as the last recorded track name after recording the recording target track; The track order is TNOF, and the track order of the last recorded track is T
As a NOL, the track order is TNOF + 1 to TNOL
-1 changing the track order of the track backward by 1 and changing the track order of the last recorded track to TNOF + 1, and recording the management table in which the track order is updated as described above on the disc-shaped recording medium. And a step of performing a disc recording method.

A seventh invention is a disk recording method according to the sixth invention, wherein the disk-shaped recording medium is a mini disk and the management table is UTOC.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. In the following description, a case where the disc recording device is a mini disc device will be described as an example. In the mini disk device of the present invention, the name of the recording target track is stored in the name memory before the start of recording. The name of the track (hereinafter,
The track title) is given according to the program or information system to be recorded. When the recording of the recording target track is completed, the name of the recording target track read from the name memory is written in the management table stored in the management table memory, and a plurality of data recorded in the disc-shaped recording medium including the recording target track is recorded. Out of tracks
With respect to a plurality of tracks having the same name, the track numbers of the tracks are changed so that the track numbers of the plurality of tracks are continuous to update the management table, and the updated management table is stored in the management table memory. It is read and recorded on a disc-shaped recording medium.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a mini disk device showing an embodiment of a disk recording device of the present invention. In FIG.
Reference numeral 11 is a mini disk, 13 is a reproducing head, 15 is an RF amplifier for amplifying an RF signal read by the reproducing head 13, 17 is a reproducing head driving means for controlling the reproducing head 13, and 19 is a pre-recorded disc. Address decoder for reading the address of the groove (track), 21
Is an EFM / ACIRC decoder for solving the ACIRC of the EFM signal, and 31 is a memory control means for controlling address management and input / output of the semiconductor memory 33.

Reference numeral 35 is an ATRAC decoder for decoding audio data compressed by the ATRAC method, and 3
Reference numeral 7 denotes a D / A converter (hereinafter also referred to as a DAC) that converts a digital signal into an analog signal. Selector 3
Reference numeral 8 is a signal source selecting means, which selects one of the signal source equipment A, the signal source equipment B, and the signal source equipment C connected to the input terminal based on a command from the system control means 23, and selects the signal source. The information to be recorded, which is transmitted from the signal source device, is supplied to the analog / digital converter (ADC) 39. In this example, the Tuner 26 is connected as the signal source device C.

The ADC 39 is an A / D converter (hereinafter referred to as AD) which converts an input analog signal into a digital signal.
Also referred to as C), 41 is an ATRAC encoder that compresses digital data by the ATRAC system, and 43 is an EFM signal that adds ACIRC to the compressed data to generate an EFM signal.
FM / ACIRC encoder, 45 is a head driving means for driving a recording head, 47 is a recording head, 23 is a system control means for controlling the entire mini disk device 10, and includes a timer 22 and a memory 24, and 25 is a mini disk 11
The display means for displaying the recording mode of No. 2 is an operation means for an operator to operate the mini disk device 10.

The timer 22 is a timer for managing the recording start time and recording end time of the reserved recording, and uses the system clock. The memory 24 is a UTOC information memory for temporarily storing UTOC information including recording start position information, recording end position information and track name of each track in the MD, and a name of a recording target track from before the start of recording of the track. It also serves as a name memory for storing and a reservation setting memory for storing setting contents of reservation recording.

FIG. 6 shows the data structure of sector 0 of the UTOC information. When the track N recorded in the MD is reproduced by the mini disk device 10, U shown in FIG.
According to the information of the pointer n stored in the TOC information sector 0, the read head 13 is used to start reading the recorded data. The read data is subjected to the ACIRC by the EFM / ACIRC decoder 21 via the RF amplifier 15 and written in the memory 33 via the memory control means 31. The memory control means 31 reads the data written in the memory 33 and sends it to the ATRAC decoder 35,
The ATRAC decoder 35 performs ATRAC decoding processing, and the obtained digital signal is converted into an analog signal by the DAC 37.

Data can be read from the mini disk 11 in a fraction of the real time recorded, and the amount of data stored in the memory 33 is the first.
When the value exceeds the predetermined value, the reproducing head 13 stops reading and enters the pause state. When the amount of data stored in the memory 33 becomes smaller than the second predetermined value, the reproducing head 13 resumes reading. The reproduction of the MD is performed in the order of the track number from the smallest track number unless the operator programs the reproduction order. Therefore, when an unedited MD that has been recorded is played back, the playback head 1
In No. 3, the reproduction is performed while gradually moving from the inner circumference side to the outer circumference side, and the operation of selecting and reproducing only the track satisfying the specific condition is not performed.

Therefore, the disc recording apparatus of the present invention performs a process of changing the track number after the end of recording of a plurality of tracks in which the track names corresponding to a certain program are recorded so that the track numbers are continuous. Be seen. In this way, by automatically performing the MOVE operation for each track according to the track name, for example, the track in which the first program is recorded has track numbers 1 to 5
The track number of the third program is changed from 6 to 13, the track number of the second track is changed from 14 to 17, and so on. It becomes possible to reproduce.

The above-mentioned track name is given by the operator before recording is started, depending on the program or the system of information to be recorded. That is, the name determined in association with the program to be recorded is stored in the name memory as the name of the track before recording of each track, and is read from the name memory when the recording of the track ends. The track name is written in the sector 1 of the UTOC stored in the management table memory.

FIG. 2 is a flow chart showing an embodiment of the reserved recording method according to the present invention, and FIG. 4 is a diagram illustrating setting contents of reserved recording according to the present invention. As shown in FIG. 4, the reserved recording (timer recording) is based on the flowchart shown in FIG. 2 in which the operator previously specifies the recording start date and time, the recording end date and time, the operation mode, the signal source, the channel, and the like. Recording automatically. In Figure 4,
What is different from the setting contents of the reserved recording shown in FIG. 8 is that track names (track titles) corresponding to the programs such as “English” and “Top10” are written in the title field. The track title written in the UTOC information is actually "English" or "Top1".
It is written with the respective ASCII code indicating "0".

The flow chart shown in FIG. 2 shows the processing after the operator finishes setting the reserved recording. In FIG. 2, in step S11, the process waits until the Power Off button is pressed and the process proceeds to step S13. In step S13, it is determined whether or not the timer recording is set. If it is set, the process proceeds to step S15, and if it is not set, the process proceeds to step S33 to turn off the power and end this flow.

When the process proceeds from step S13 to step S15, in step S15, the preset recording contents stored in the memory are compared with the current time to determine whether it is the recording start time or not. Proceed to S17.
In step S17, the MD is turned on to start the set recording, and the process proceeds to step S19. Step S19
Then, after waiting for the recording end time, the process proceeds to step S21. In step S21, the P-EM of the UTOC sector 1
The track name read from the name memory is written and stored in the Track name column corresponding to the slot (P-TNAn) indicated by the PTY pointer, and the process proceeds to step S23.

In step S23, the track number of all tracks recorded in the MD is track name.
Editing is performed such as changing the track order according to the above, and the process proceeds to step S25. In step S25, the values of P-TNOn of UTOC sector 0 and P-TNAn of UTOC sector 1 stored in the UTOC memory are rewritten, and the process proceeds to step S27. In step S27, the edited UT
The OC information is written on the disc and the process proceeds to step S29. The timer recording is ended in step S29, the MD is turned off in step S31, and the process returns to step S11.

FIG. 3 is a flow chart showing details of the track-order editing process (S23) shown in FIG. In the process shown in this flowchart, a track having the same name as the last recorded track (track number is TNOL) is searched. In this search, the track number of the track to be searched is decremented by one. If it is detected that the track name of the track number TNOF is the same as the last recorded track name,
Track numbers are from (TNOF + 1) to (TNOL-1)
The number of the track up to is increased by 1 and the track number of the last recorded track is changed to (TNOF + 1). As a result, the track with the track number TNOF and the track number of the last recorded track become continuous.

In FIG. 3, in step S41, the track number of the last recorded track is set to TNOL, and the name of the last recorded track is set to TNAL. In step S43, the track number (TN
OE) is set to TNOL-1. Here, the track name of the search target track (track number is TNOE) is TN.
AE. In step S45, it is determined whether or not TNOE is 0. If it is 0, this flow ends, and if it is not 0, the process proceeds to step S47. In step S47, the name of the search target track is read out from the UTOC information stored in the memory, and is substituted into TNAE, and then in step S4.
Proceed to 9.

In step S49, TNAE and TNAL
Are the same, and if they are the same, step S
If not, the process proceeds to step S55. In step S55, the track number (TNOE) of the track to be searched is decremented by 1, and step S45 is performed.
Go to. When the process proceeds from step S49 to step S51, the track number is (TNOE +
The track numbers of the tracks from 1) to (TNOL-1) are changed by increasing them by 1, and the process proceeds to step S53. In step S53, the track number of the last recorded track is changed to (TNOE + 1), and this flow ends. In the actual process, the process of step S51 and the process of step S53 are performed together as one process.

FIG. 5 is a diagram for explaining the recording result of the MD recorded by the recording method of the present invention, and it is assumed that the recording is performed every day with the reservation recording setting shown in FIG. Figure 5
(A) shows a state in which up to track 2 is recorded in the recording on the first day, and track 3 remains recorded in the recording on the second day. FIG. 5B shows the result of changing the track number based on the track name from the state of FIG. 5A, and the track 3 (P-TNO3) recorded last is given the same track title. After the current track 1, that is, the track 2 is moved (MOVE).

Originally, the track number was 2, P-T
The NO2 track is moved to track 3. When moving the track, it is necessary to rewrite the sectors 0 and 1 of the UTOC described above. For example, when updating from the state of (A) to (B) of FIG.
The value of NO2 was changed from 02h to 03h, and P-TNO
The value of 3 is changed from 03h to 02h. Further, the value of P-TNA2 of sector 1 is changed from "02h" to "03h", and the value of P-TNA3 is changed from "03h" to "02h".
is changed to "h".

FIG. 5C shows the reserved recording P-3 on the third day.
The state immediately after TNO5 is recorded and before the track order is edited is shown. In this case, the track 2 (P-TNO3) is detected by the search for the track title "English" of the track of P-TNO5, and P -Increase the track number of the track number 3 and after the track number 2 of TNO3 (excluding the last recorded track) by 1 and set the track number of the last recorded track 5 (P-TNO5) to P -Change to the track number 3 next to the track number 2 of TNO3. The editing result of the above-mentioned track number is shown in FIG.

FIG. 5E shows the state after the end of the reserved recording on the third day. In this case, the last recorded track 6 (P-TNO6) and the immediately preceding track 5 (P
-TNO4) is the same track title,
The track number of the track number 6 (P-TNO6) and other tracks are not changed by editing the track order. As shown in (D) and (E) of FIG. 5, a track whose track title is "English" is given a continuous track number in the order of oldness of recording, and the track title is "Top10". The tracks of No. are given consecutive track numbers in the order of oldest recording.

When the MDs recorded as shown in FIGS. 5D and 5E are reproduced, they are reproduced in TNO order,
First, the track whose track title is "English" is reproduced in the recording order from the oldest recorded track, and the track whose next track title is "Top10" is reproduced in the recording order from the oldest recorded track. When reproducing a disc in which track names are recorded by the disc recording apparatus or the disc recording method of the present invention, the operator specifies the name of the track to be reproduced, and the reproducing apparatus specifies the name of the specified track. It is also possible to access the head position of the track having the smallest track number among the plurality of tracks that are provided and selectively and continuously reproduce only the track having the track name designated as the reproduction target.

As described in detail above, according to the embodiment to which the present invention is applied, after the recording target track is recorded, the track order is automatically changed based on the track name of each track, and the same track order is obtained. The track order of multiple tracks with track names is changed to be continuous. Therefore, if a name according to the program or information system to be recorded is given as the track name, only the track in which a specific program or system is recorded can be continuously reproduced at the time of reproduction. Further, by adding the track order of a plurality of tracks having the same track name to the recorded order, it is possible to reproduce the track in which the specific program is recorded in time series.

[Brief description of drawings]

FIG. 1 is a block diagram of a mini disk device showing an embodiment of a disk recording device of the present invention.

FIG. 2 is a flowchart showing an embodiment of a reserved recording method according to the present invention.

FIG. 3 is a flowchart showing details of a track-order editing process (S23) shown in FIG.

FIG. 4 is a diagram exemplifying setting contents of reserved recording according to the present invention.

FIG. 5 is a diagram illustrating a recording result of an MD recorded by the recording method of the present invention.

FIG. 6 is a diagram showing a data structure of sector 0 of UTOC information.

FIG. 7 is a diagram showing a data structure of sector 1 of UTOC information.

FIG. 8 is a diagram illustrating an example of setting contents of conventional reserved recording.

FIG. 9 is a diagram exemplifying an array of information recorded based on the setting of conventional reserved recording.

[Explanation of symbols]

11 mini discs 13 Playhead 15 RF amplifier 17 Playback head driving means 19 Address decoder 21 EFM / ACIRC Decoder 22 timer 23 System control means 24, 33 memory 25 Display means 26 Tuner 31 memory control means 35 ATRAC decoder 37 Digital / Analog Converter (DAC) 38 selector (signal source selecting means) 47 recording head

Claims (7)

[Claims] 1. A management table memory for temporarily storing a management table including recording start position information, recording end position information, and track names of each track, and a name memory for storing names of recording target tracks. In a disc recording apparatus for recording a disc-shaped recording medium, after recording a recording target track, the name of the recording target track read from the name memory is written in the management table and recorded in the disc-shaped recording medium according to the management table. Of the plurality of tracks, the track order of each track is updated based on the management table so that the track order of the plurality of tracks having the same name is continuous, and the management table in which the track order is updated is A disc characterized by being read from a management table memory and recorded in a disc-shaped recording medium Recording device. 2. A timer for managing the time of starting and ending reservation recording, and a reservation setting memory for storing the setting contents of the reservation recording, wherein the setting contents of the reservation recording record information to be recorded. 2. The disc recording device according to claim 1, wherein the disc recording device includes a name of a track to be recorded. 3. The disc recording apparatus according to claim 1, wherein the disc-shaped recording medium is a mini disc, and the management table is UTOC. 4. After the recording target track is recorded, the track order of the recording target track is set next to the last recorded track among the recorded tracks having the same track name as the recording target track. Claim 1
The disk recording device according to claim 3. 5. When updating the track order of a plurality of tracks to which the same track name is given after the recording target track is recorded, the track order is determined from the oldest track to the recording order. 4. The disk recording device according to 4. 6. A disk recording method for managing recording on a disk-shaped recording medium by storing a management table including recording start position information, recording end position information and track name of each track in a memory, A step of storing the track name in a memory; a step of searching a track having the same track name as the last recorded track name after the recording target track is recorded; and a track order of the tracks detected by the search.
F, changing the track order of the last recorded track to TNOL, changing the track order of the tracks whose order is TNOF + 1 to TNOL-1 by 1 and changing the track order of the last recorded track to TNOF + 1. And a step of recording the management table with the track order updated as described above on a disk-shaped recording medium. 7. The disc recording method according to claim 7, wherein the disc-shaped recording medium is a mini disc, and the management table is a UTOC.