JPH09180411A - Editing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate editing mistakes completely and protect editing data securely by a method wherein, if the editing control information is not recorded on a recording medium yet, an identification code which is peculiar to the medium and is produced automatically in an editing apparatus is recorded on the recording medium and the identification code is watched. SOLUTION: Editing materials supplied from an input terminal 18 are recorded on the main data area of a disc 1 by a magnetic head 15 through an A/D converter 19, a RAM 22, a driver 23, etc., under the control of a CPU 16. Then the editing materials which are reproduced in accordance with the editing control information (REC ID) are temporarily stored in a RAM 26 and the editing list of the editing result and the editing control information are stored in a RAM 37 under the control of CPU's 33 and 16. If the editing control information is not recorded on a disc 1 which is newly inserted yet, a disc ID which is peculiar to the disc and is produced from random numbers by an automatic code producing means 40 in relation to the CPU 33 is recorded on the predetermined area of the disc. With this constitution, the editing control information and the disc ID are collated with each other and the editing list is saved securely and hence useless works can be hereinafter eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an editing apparatus suitable for application when editing audio data or the like to construct one voice data. Specifically, by recording the identification code unique to the recording medium automatically generated in the device as one of the editing control information on the new recording medium, the recording control medium is carelessly ejected by forgetting to save the editing control information. Even in this case, the editing control information can be surely saved in the same recording medium by searching the identification code.

[0002]

2. Description of the Related Art Recent audio editing apparatuses use a disc-shaped recording medium such as a magneto-optical disc instead of a tape-shaped recording medium, and record a plurality of audio materials on the disc-shaped recording medium.

FIG. 9 shows an example of a data area when an optical disk such as a magneto-optical disk is used as a recording medium. The disk 1 has an outer peripheral side for recording audio data used as audio material. A main data area 2 is provided, and an auxiliary data area 3 is provided on the inner peripheral side thereof.

In the auxiliary data area 3, edit control information such as recording management information when recording and reproducing audio data is recorded. In the figure, this area is further divided into two parts on the inner and outer circumference sides. To be done. The same auxiliary data (AUX data) is recorded in the main auxiliary data area 3a located on the outer peripheral side and the sub auxiliary data area 3b located on the inner peripheral side. Even if one auxiliary data cannot be read, the editing data can be played back using the auxiliary data that could be read from the other area so that the editing work up to now can be saved. Is.

The address formed on the disk 1 is set so that the boundary point p between the main data area 2 and the auxiliary data area 3 becomes the address 0. The recording management information and the like recorded in the auxiliary data area 3 are recorded and reproduced on a page-by-page basis.
In (zero), recording management information and disc management data described later are recorded. Therefore, based on the recording management information recorded on this page 0, the editing material is cut out or added while referring to other pages.

FIG. 10 shows the relationship between the recording management information and the disc management information among the information recorded in the auxiliary data area. The disc management information includes an erase flag and a TOC (Time O) as shown in FIG.
f Contents), disc information and RE
There are four types of C information.

In the erase flag, when erasing recorded information on the disc 1, a flag indicating whether the entire disc is erased (full erase) or partially erased (instant erase) is saved.

In the disc information, an identification code peculiar to the disc (referred to as disc ID (DISC ID)) is recorded.

Recording management information (REC ID (REC ID)) and the like are recorded in the REC information.
The REC ID is an identification code (recording start address, end address thereof, etc.) added each time the audio material (editing material data) is recorded on the disc.

In addition to disk management, there are user data and the like. The user data includes, in addition to the edit data, a list (mark list) indicating a mark (mark) for editing to be attached to the editing material, and the edit list (EDL: Edit Data List) includes the user data and the mark list. Is configured. There are other auxiliary data as well, but since they are not directly related to the present invention, detailed description thereof will be omitted.

As described above, non-linear editing can be performed by using the disc. In the non-linear editing, it is only necessary to take out a necessary part from the material and create the edit list EDL. This is because if an edit list is used, it can be rearranged in the order desired to be reproduced on the list and continuously reproduced. The edit list EDL is the output of the editing work and becomes a finished product, and this edit list is recorded on the disk together with the audio material.

[0012]

By the way, when the audio material and the recording control information such as the edit list are saved in the same disk, the audio material is sequentially recorded in the main data area of the disk in the recording mode. The recording control information such as the record ID and the record ID are collectively saved to the disc at the stage when all the editing work is completed. Until then, the data was written in the database area on the memory built in the main body of the device.

If the disc is ejected (ejected) before saving the edited result by an erroneous operation, the edited result will not be saved on the disc. Therefore, the process when the next disc is inserted immediately after the eject is performed. The following two methods can be considered.

(A) The editing control information (AUX data) such as the recording control information of the inserted disc is loaded as it is into the memory of the apparatus main body.

(B) When it is found that the edited result has not been saved, AUX data loading of the inserted disc is prohibited. Then, the edited result, that is, the AUX data, which has been worked until immediately before, is stored in the memory as it is. After that, when the save key is pressed, the AUX data is saved in the inserted disk.

However, in the processing method (a), the immediately preceding edit list is replaced with the newly loaded AUX data. As a result, the previous editing result cannot be saved in the corresponding disk, and the editing work is wasted.

In the processing method of (b), since the disc identification process is not performed, the edited result is also saved in another disc that has nothing to do with the edited result saved in the memory. Become. Then, the following problems will occur.

In an editing apparatus using a disc, both main data and AUX data recorded on the disc are recorded on a page basis. Therefore, it is assumed that the AUX data of the disk A which is being used for editing is page A1 / A2 / A3 and the AUX data of the newly inserted disk B is composed of page B1 / B2 / B3. Then, the AUX data of the disk A is loaded into the memory, the editing work is performed, and the edited result is A
It is assumed that only two pages are updated and this becomes A2 'on the memory.

If the editor erroneously ejects the disk A without saving it, and if the save process is executed without recognizing that another disk B is inserted, only the update information is written to the disk. Will be rewritten. As a result, the corresponding page B2 on the disc B is rewritten to page A2 ', resulting in B1 / A2' / B3.

The save itself can be executed without any problem. However, if the AUX data is loaded from the disk B onto the memory and is expanded in the database of the memory while reading the page data, the page A2 'and the page B1 or B3 are data that are not related to each other, and therefore, the information inconsistency is caused. There is a high possibility that the computer inside the device will hang up due to the destruction of the database. Edit list E
This is because the DL has a hierarchical structure and the data of each page are linked to each other in a complicated manner.

If it applies to the relationship between the personal computer and the floppy disk, it is ejected and another floppy disk b is inserted while the floppy disk a is being loaded and the file is being edited. Corresponds to the case described above.

In the personal computer, the file can be saved in the floppy disk b. This is fine, because the file itself is a single item in computer processing, and it is completely unrelated to other files, that is, not linked.

In the above-described editing apparatus, the pages are complicatedly linked to each other, so that the computer may hang up, and as described above, the immediately preceding editing information may be attributed to a bubble.

Therefore, the present invention solves such a conventional problem, and proposes an editing apparatus capable of surely saving the immediately preceding editing result in a corresponding recording medium.

[0025]

In order to solve the above-mentioned problems, in claim 1, a plurality of materials to be edited and editing control information containing an editing list for these editing materials are the same recording medium. In the editing device which is recorded on the above and allows the plurality of materials to be selected based on the recorded editing control information, when the editing control information is not recorded on the recording medium, a number is issued in the device. The code is recorded on the recording medium as a unique medium identification code.

In the present invention, an identification code peculiar to the disc as the recording medium is provided. As the identification code, a number randomly generated by the main body of the editing device is used. Increase the number of bits so that the same number is not issued. The disc on which the recording control information is not recorded is determined to be a raw disc, and when it is a raw disc, when the recording of audio data is performed, an automatically issued identification code is recorded at disc ejection. Thereafter, this identification code is not changed. It is an identification code unique to the disc, that is, a disc ID. The disc ID is recorded in the disc information area when the disc is a raw disc.

When the disc is mistakenly ejected without saving the edit list on the disc, the disc ID of the disc to be inserted next is first discriminated, and the disc ID immediately before being stored in the memory is checked to find a match. Save the last edit list stored in memory to this disk. If they do not match, the file is not saved, so there is no inconsistency in the edit list. Since the editing list can be escaped, the editing work is not wasted.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a case where an embodiment of an editing apparatus according to the present invention is applied to the above-described audio data editing apparatus will be described in detail with reference to the drawings.

FIG. 1 shows a concrete example of the editing apparatus 10 according to the present invention. As the recording medium, a case is shown in which a disk (MO) that records and reproduces data by magneto-optical is used.

The data recording section 5 has a disk 1, which is rotationally driven by a spindle motor 11. An optical pickup means 12 which is movable by a linear motor 13 is arranged on the lower surface of the disk 1, and a laser emitted from the optical pickup means 12 is applied to the disk surface. On the other surface of the disk 1 facing the optical pickup means 12, a magnetic head 15 for recording / reproducing data while keeping a small gap is arranged so as to move in synchronization with the optical pickup means 12.

Linear motor 13 accompanying recording / reproducing of data
Is controlled and the motor 11 is controlled by a system controller (servo controller) 16 with a built-in CPU. Further, sound recording and reproduction are also performed under the intervention of the servo controller 16.

Therefore, the editing material (sound information, including phonemes) supplied to the terminal 18 is A / D converter 19.
Is converted into a digital signal having a predetermined number of bits, supplied to the encoder and modulator 21 via the crossfader 20, encoded in a data format for recording on the disk 1, and modulated. The modulated editing material is supplied to the magnetic head 15 via the buffer RAM 22 and the driver 23 and recorded in the main data area 2.

The editing material reproduced by the magnetic head 15 while referring to the recording management information (REC ID) which is a kind of editing control information is passed through the harmonic amplifier and the clock generating PLL 25 for data reproduction to the buffer RAM 2
6 is temporarily stored.

The editing material read from the RAM 26 is supplied to a demodulator and decoder 27, where data demodulation processing and decoding processing are performed, and interpolation processing for error data is performed by an interpolating means 28 in the subsequent stage. It Furthermore, based on the record management information managed by the CPU 33,
The reproduction mute means 29 controls on / off of mute for reproduction data. The interpolated editing material is supplied to the D / A converter 31 via the crossfader 30, converted into an analog signal, and output.

The TOC information read from the auxiliary area 3 of the disc 1 passes through a decoder 27, an interpolation means 28, a reproduction mute means 29, a crossfader 20, and a buffer 32 which functions as a read / write of auxiliary data. It is supplied to the system controller (main controller) 33.

A keyboard 35 having a display and a remote controller 36 are connected to the main controller 33, and editing instructions are issued from here. Therefore, the servo controller 16 and the main controller 33 are linked to each other. The auxiliary data read from the disk 1, especially the edit list and the record ID, are stored in a non-volatile memory, which is a working RAM (EPRAM) 37 in this example.
At the time of editing, a new editing work is performed with reference to this editing list and the like. The edit result is stored in the RAM 37 as an edit list and a record ID. 37a is a RAM
It is a backup area provided in 37.

The edit list and record ID created by a new edit are stored in the buffer 32 and the crossfader 20 at the time of data saving or disk ejection.
After that, the data is rewritten on the disc 1. The crossfader 29 described above is provided for switching (crossfading) between the edited audio material reproduced from the disc 1 and the input audio material before editing.

When the inserted disc is a raw disc (unrecorded disc or the like), a disc-specific identification code (disc ID) randomly generated inside the device is recorded in the disc information area. Therefore, a code automatic numbering means 40 is provided in association with the control unit 33. This utilizes a pair of timers 38, 39 in this example of hardware configuration. 16 timer outputs
In the bit structure, the combined 32-bit identification code is used as the disc ID. A pair of timers 3
If the start timing of either one of 8 and 39 is varied, it means that the 32-bit timer output is issued a random number.

Now, at the time of saving data to the disk, the disk discrimination processing as shown in FIG. 2 is performed. When the save key is pressed, the above-described REC ID save processing is first checked (steps 61 and 62), and when the save processing has not been performed, this processing is executed. Then, the raw disk is discriminated (step 63). Since the disc ID cannot be read from the disc on which the recording control information is not recorded, it is determined that the disc is a raw disc (unrecorded disc) at this time, and audio recording is actually executed.
When the recording ID is generated, the automatically generated disk ID is recorded in the disk information area of the disk management (step 63).

This disc ID recorded on the disc is not changed thereafter and is used as an identification code unique to the disc. When the record ID and the disc ID are saved, the edit list save process is executed next to exit the data save routine (step 64). Although not shown, the eject key is in a standby state thereafter.

In the present invention, the disc-specific identification code, that is, the disc ID is provided as described above. As the disk ID, a number randomly generated by the code automatic numbering means 40 is used.

As shown in FIG. 3, with respect to the period T0 of the first timer (also called timer 0) 38 used for random number generation, in this example, the second timer (also used for random number generation) ( The period T2 of 39) (also called timer 2) is selected to be longer. For example, T0 = 10.67 mse
c, T2 = 213.0 msec.

The sum c (= a + b) of the timer outputs (count values) a and b at the specific time tx is used as the disc ID number. Specific time (timing)
Is when the disc is ejected.

The starting timing t2 of the timer 2 is indefinite with respect to the starting timing t0 of the timer 0. Since the activation timing t2 is indefinite, the interval of Δt varies from 10 msec to 100 msec. As a result, the value of the timer output b is different even at the same timing tx, and the value of the sum timer output c is not constant. As a result, the timer output c becomes a random number and can be used as a random number.

In this example, the timer outputs a and b are both 16
Bit configuration, one for lower 16 bits and the other for upper 16
By using as a bit, a total 32 bit number is used as a disc ID. Therefore, with this value, the probability that the same number will be issued is extremely low.

An example of the start timing of the timer 0 and the timer 2 will be described with reference to FIGS.

In FIG. 4, when the remote controller 36 is connected to the control unit 33, the activation timing is set by using a part of the communication procedure communicated with the remote controller 36.

As an example of the communication procedure performed between the control unit 33 and the remote controller 36, as shown in FIG. 5, when the remote controller 36 is connected to the main body of the apparatus, a remote controller (RM) standby signal is sent to the control unit 33. When this is received, a device code request (RQ) signal is returned. When the device code request signal is received, device code data unique to the remote controller is sent. When the control unit 33 confirms the remote controller connection by this data, the display status transmission mode as shown in the figure is set.

Since the timing of transmitting this device code data changes subtly every time the power of the apparatus is turned on, the reception timing of this device code data is used as the activation timing of the timer 39 in this example. Therefore, in the control unit 33, as shown in FIG. 4, when the device power is turned on, the trigger flag is reset to “00” when the data in the RAM 37 is cleared, and the remote control standby mode signal is received, the trigger flag is set to “01”. , And the trigger flag “02” is set by receiving the device code data.

The random number issuing software using the random number issuing timers 38 and 39 is called every 50 msec when the above-mentioned timer periods T0 and T2 are used.

FIG. 6 shows a concrete example thereof, which is 50 ms.
In this random number generation flow activated every ec,
First, it is judged whether or not the timer 0 is in the stop mode based on the contents of the trigger flag (step 71). When the trigger flag is "00", neither timer 0 nor timer 2 has been activated, so a = 0, b = 0, and the total value c is also 0 (steps 72, 73, 74).
When this timer output c is zero, the value of the stack pointer is used as the timer output c (step 7).
6). After that, it is stored in the timer storage area provided in the RAM 37 (step 77).

After the next 50 msec, when the trigger flag is "01", the timer 0 is started, and the timer output that changes from moment to moment is obtained from the timer 0. 0
Remains. Therefore, the timer output c also uses the value of the stack pointer. When the trigger flag becomes "02" by repeating 50 msec several times (for example, three times), the timer 2 is also activated, and the output a of the timer 0 is fetched via step 71 (steps 71 and 78), and the timer 2 is further activated. The output b of is also taken in and the timer output c is generated (steps 79 and 80).
This timer output c is stored in the timer storage area on the RAM 37. When both the timers 0 and 2 are activated, the values of the timer outputs a and b are automatically updated in their respective cycles, so the value of the timer output c is also automatically updated.

The count output c, which is the data of the timer storage area, is read when the raw disc is ejected and stored in the disc information area as a disc-specific ID. As described above, in order to store the disc ID, the recording of the audio data is actually executed, and the REC ID is issued and stored in the RAM 37.

As described above, the timing from when the power of the apparatus is turned on until the command data is received by the control unit 33 is slightly different, and it is known that the timing varies from 10 to 100 msec, and the variation is not constant. Moreover, since the disc eject timings are also different, there is almost no possibility that the timer output c of the same value will be issued and used as the disc ID. If 16-bit data is used for timer outputs a and b, 2
It is also clear from the fact that the resolution is 1/32.

A communication procedure with the remote controller 36 can be used as a signal for activating the timers 38 and 39.
It is also possible to use the generation timing of the task generated by the control unit 33.

For example, when the power is turned on, a root task which is the basis of the entire apparatus is generated. Root task is number 1
As shown in FIG. 7, for example, a command analyze task generated first and a periodic task generated several tens of msec later than this can be used.

The command analyze task is a task that receives a key, decrypts the contents of the key, and gives an execution instruction to a task of the key execution system, and the periodic task has a periodicity such as a random number issuing task or a monitoring task. It is a task. As for the timing at which the periodic task is generated, the task generation time up to this point varies, so 10 to 10
It is known that there are variations in 0 msec. Therefore, the command analyze task sets the trigger flag to "01" and the periodic task sets the trigger flag to "02".

Disk I numbered in this way
When D is recorded on the raw disc, this disc ID is always used for disc discrimination thereafter, and the disc ID is collated with the disc ejected immediately before.

FIG. 8 is a flowchart showing this collating process. When the disc is mistakenly ejected without saving the edit list on the disc, the disc ID of the disc to be inserted next is first discriminated and stored in the memory. The disc ID is collated with the disc ID immediately before that, and when the disc ID is coincident with the disc ID, the immediately preceding edit list stored in the memory is saved in this disc.

Therefore, first, the disc ID immediately before being stored in the RAM 37 is collated with the disc ID of the disc that is currently inserted, and when the two coincide with each other and when the save key is pressed, an edit list or Wreck I
The save processing of D is performed, and the light is turned off upon completion of the save (steps 91, 92, 93).

This process is not performed when the edit list or the like has already been saved. This is because saving again is unnecessary. Whether or not it has already been saved can be determined by the state of the flag generated when the eject key is pressed without pressing the save key.

When the eject key is pressed instead of the save key, the save key is made to blink and the editor is prompted to perform the save processing (steps 94 and 95). When the eject key is pressed again despite prompting the save process, the save process is deemed unnecessary and the disc is ejected (steps 96, 97). When a save key is pressed instead of this eject key, the process proceeds to save processing. At this time, the save key lights continuously (step 9).
8, 99).

On the other hand, when the disc IDs do not match, the save process to the disc is not performed, and conversely, the AUX data of the disc is loaded to the RAM 37 (steps 91 and 100).

By performing the save process such as the edit list only when the disc IDs match, it is possible to eliminate an erroneous save process in which the edited result using another disc is saved in another disc. By this save processing, it is possible to avoid a situation where the edit lists saved on the disk are not linked to each other.

The material to be edited is not limited to audio data, but may be image data or the like.

[0066]

As described above, according to the present invention, an identification code peculiar to the disc is automatically issued and recorded on the unrecorded disc. In this way, by monitoring the identification code, it is possible to surely eliminate an editing error such as saving an editing result on another disk to another disk, and it is possible to surely protect valuable editing data. Further, according to the method of random number generation as in this example, since the reproducibility of the generated data is extremely low, it is possible to generate a disc-specific identification code without duplication. Therefore, the present invention is extremely suitable when applied to a voice editing device using an MO or the like.

[Brief description of the drawings]

FIG. 1 is a system diagram of essential parts showing an embodiment of an editing apparatus according to the present invention.

FIG. 2 is a flowchart showing an example of disk ID save processing.

FIG. 3 is an explanatory diagram of timer start timing.

FIG. 4 is a diagram illustrating a timer flag generation example.

FIG. 5 is a diagram showing a communication procedure with a remote controller.

FIG. 6 is a flowchart showing an example for generating a disc ID.

FIG. 7 is a diagram illustrating a timer flag generation example.

FIG. 8 is a flowchart showing an example of disc ID determination processing.

FIG. 9 is a diagram showing a relationship between disc areas.

FIG. 10 is a diagram for explaining a part of an AUX area data structure.

[Explanation of symbols]

 1 Disk 5 Recording Unit 10 Editing Device 33 Main Controller 37 RAM 37a Backup Area 38, 39 Timer 40 Code Automatic Numbering Means

Claims (7)

[Claims] 1. A plurality of materials to be edited and edit control information containing an edit list etc. for these edit materials are recorded on the same recording medium, and the plurality of materials are edited based on the recorded edit control information. In the editing device capable of selecting the material, when the editing control information is not recorded on the recording medium, the code issued in the device is recorded on the recording medium as a unique medium identification code. An editing device characterized by being made. 2. The editing apparatus according to claim 1, wherein the code is automatically issued in the apparatus. 3. The editing apparatus according to claim 2, wherein automatic code number issuing means is provided in the apparatus, and the number issuing means is configured as a random number issuing means. 4. The automatic code number issuing means has a pair of timer means, and the timer output is output as a random number by differentiating the start timings thereof, and either one of the outputs or the addition thereof is performed. The editing device according to claim 2, wherein the output is used as a medium identification code. 5. When the edit control information is saved on a recording medium, the medium identification code is discriminated, and the medium identification code and the medium identification code immediately before being loaded in the apparatus body match. The editing apparatus according to claim 1, wherein the editing control information is saved in the recording medium only. 6. The editing apparatus according to claim 1, wherein the recording medium is a disk-shaped recording medium such as a magneto-optical disk. 7. The editing apparatus according to claim 1, wherein the material to be edited is an audio material such as voice.