JPH11162146A - Data verification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To verify an authoring result at a low cost and in a short time, confirm a navigation operation with a quality the same as the quality of a commercially available player and verify the qualities of reproduced image, sound and title. SOLUTION: A player 3 is a player which is commercially available or to be commercially available. A hard disc device 1 stores an authoring result before verification. An I/F unit 2 provides an interface between the hard disc device 1 and the player 3. The authoring result read out from the hard disc device 1 by the I/F unit 2 is directly supplied to the signal processing circuit 32 of the player 3 to verify the authoring result stored in the hard disc device 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data verification device for verifying data created by editing a video signal, an audio signal, or the like.

[0002]

2. Description of the Related Art Conventionally, when a large number of optical discs on which data (hereinafter, referred to as authoring results or authoring data) created by editing video signals and audio signals are recorded are manufactured in large quantities, the authoring is required. A master disk on which data is recorded is created, a stamper is created from the master disk, and the recording pits of the stamper are transferred to a plastic disk by, for example, injection molding or the like, whereby a large number of optical disks are manufactured.

In general, before mass production of optical discs, it is verified whether or not the above-mentioned authoring result has been made as intended by the authoring creator.

For example, when manufacturing an optical disk of a so-called DVD (Digital Video Disk) format (hereinafter referred to as a DVD disk), which has been standardized in recent years and a product has begun to appear on the market, the authoring result is verified. Has been done. In the case of this DVD disc, the video signal and the audio signal are so-called M
PEG (Moving Picture image coding Experts Grou
p) It is recorded after being compressed and encoded according to the standard.

[0005] Here, the authoring data recorded on the DVD disc includes not only the video signal and audio signal but also reproduction operation specification information for reproducing the DVD disc by a player. The reproduction operation specification information is recorded in an area different from the video signal and the audio signal. This playback operation specification information is also called navigation data, and in the following description,
It will be unified and called navigation data. That is, the navigation data is read out at the time of reproduction of the DVD disk and sent to the CPU (Central Processing Unit) in the player. The CPU interprets the contents of the navigation data and performs various reproduction operations. It performs control and control of signal processing.

[0006] Specific contents interpreted by the CPU include, for example, those described in the following items. Of course, these items are merely examples, and there are other items, but only representative items are described here for simplification of the description.

The first item is selection of a stream. Examples of the stream include streams such as English subtitles, Japanese subtitles, French subtitles, and German subtitles.

As a second item, there is a control of a path for reproducing a stream (stream of video / audio / caption). The paths to be reproduced include, for example, paths for reproducing a theater version, a full version, and a desired angle scene.

The third item is control of the operation of the player. The control of the operation includes, for example, control of prohibiting fast-forwarding and prohibiting voice switching.

The fourth item is an interactive operation. The interactive operation includes, for example, an operation of jumping to a desired scene on a menu screen on which buttons are arranged.

The fifth item is a procedure for starting reproduction,
Control of the operation after the end of the reproduction is mentioned. As the control of the reproducing operation, for example, an operation control such that the reproduction is automatically performed from the beginning when the reproduction is completed can be given.

The sixth item includes control of the screen size, audio mix, subtitle color, and the like. As the control of the audio mix, for example, control such as playing only vocals or only BGM (background music) in so-called karaoke can be given.

[0013]

When the above-mentioned authoring result is verified, usually, a new dedicated verification device is manufactured for the verification.

However, if the authoring result is verified using a dedicated verification device, the verification content is limited to the navigation data interpretation software of the verification device. In addition, the verification device cannot determine the quality of video, audio, subtitles, and the like.

Further, if the authoring result is verified using a dedicated verification device, the interpretation of navigation data (reproduction operation specification data) at the time of the verification depends on the software of the verification device. Therefore, even if the dedicated verification device operates normally, some of the various commercially available players may not operate normally. That is,
The syntactic interpretation of the navigation data described above may be slightly different between the software of the commercially available player and the software of the verification device, and the player may not operate as intended by the authoring creator. It can happen.

As described above, the verification of the authoring result using the dedicated verification device alone is not enough to produce the DVD format (DVD Specification for Read-Only Disc, Part
1 PHYSICAL SPECIFICATIONS) is only guaranteed to be non-violating, and it may not be possible to perform sufficient verification to support players on the market (end-user players). And try to play it on a commercially available player,
The operation was not guaranteed and the quality of video, audio, subtitles, etc. could not be determined.

However, actually producing a DVD disk is costly, requires a long process up to the end of the verification, and requires many days, which is not desirable from recent demands for quick and inexpensive disk supply. . Also, a slight change in authoring cannot be immediately confirmed.

It may be sufficient to manufacture a verification device having the same software as the commercially available player and verify the authoring result. However, it is necessary to manufacture a verification device having the same software as the commercially available player for the following reasons. Is not realistic. Hereinafter, the navigation data is referred to as CP
Each of the above items will be described as an example of contents interpreted by U.

The first reason is that, among the contents interpreted by the CPU when reproducing the DVD disc, parameters other than the second and fourth items are uniquely determined.
The parameters are large in quantity and type, and it takes a long time to deal with all of the parameters. For example, in the first generation of players, karaoke is not supported, and MPEG audio is described in the standard but has not yet been adopted.

The second reason is that the second and fourth items can be authored in various ways, and all patterns (combinations of commands and combinations of parameters) have been verified by player design. That is not to say. However, since the number of these patterns is finite even though they are diversified, it is not impossible to verify all the patterns. However, verifying all of the patterns requires a long time as described above.

Therefore, the present invention has been made in view of such a situation, and it is possible to verify the authoring result at a low cost and in a short time, to confirm the navigation operation of the same quality as that of a commercially available player, and to reproduce the information. Video,
It is an object of the present invention to provide a data verification device that can verify the quality of audio and subtitles.

[0022]

According to the present invention, there is provided a data verifying apparatus comprising: a built-in disk drive; a signal processing circuit for generating a reproduced signal by using reproduced data from a built-in disk and a reference clock; A reproducing unit including at least a control circuit for generating reproduction operation control information based on the reproduction operation specification information; a storage unit for storing an authoring result including the reproduction operation specification information; and reading out the authoring result stored in the storage unit A read control circuit for controlling, a reference clock generating circuit for generating a reference clock, and an interface unit having at least an output unit for outputting reproduced data of the authoring result read from the storage unit and the reference clock. Become
The reproduction data of the authoring result and the reference clock output by the interface means are directly supplied to the signal processing circuit of the reproduction means, and the data of the authoring result stored in the storage means is verified by using the reproduction means. Solve the problem.

As described above, according to the present invention, by using the reproducing means, for example, a commercially available player, and supplying the authoring result from the storage means to the reproducing means via the interface means, the reproducing means can be used. The data of the authoring result is verified.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration of a verification system according to an embodiment to which a data verification device of the present invention is applied.

The hard disk device (hard disk drive: HDD) 1 of the verification system shown in FIG. 1 has a hard disk as a recording medium.
A VD video file is stored.

The player 3 is a DVD player which is actually commercially available or will be commercially available. The details of the internal configuration will be described later, but a signal processing circuit 32 for performing signal processing on an MPEG stream, an operation of each unit, and a navigation data Controls playback operation based on CPU
33 and an internal disk drive unit 31 for reproducing a DVD disk as main constituent elements. In addition, a light receiving unit 35 for receiving an operation signal from the remote controller (remote controller) 6 by infrared light, for example, , A control panel (front operation panel) 34 having various operation buttons such as play, stop, and pause.

The video output terminal of the player 3 is connected to a monitor 4, and the audio output terminal is connected to a speaker 5.

The I / F unit 2 is a device for reading the authoring data from the hard disk device 1.
l Computer System Interface).
This I / F unit 2 is a SCSI
An internal RAM (Random Access Memory) 21 for temporarily storing the authoring data transferred via the RAM, a clock oscillator (OSC) 24 for generating a reference clock, and the parallel authoring data read from the RAM 21 (OSC) P which is output as serial RF data in synchronization with the clock from 24
An ISO (Serial In Parallel Out) circuit 23 and a CPU 2 for controlling the reproduction operation of the hard disk device 1 in substantially the same manner as the disk reproduction operation of the CPU 33 of the player 3.
And 2.

Between the I / F unit 2 and the player 3, two lines for serial reproduction data (RF data) and a transfer clock (RF clock) of the authoring result read from the hard disk device 1, and I RS-232C (Recommended Standalone) for communicating between the CPU 22 of the / F unit 2 and the CPU 33 of the player 3.
rd-232C).

In the verification system having the configuration shown in FIG. 1, the player 3 performs signal processing on the RF data of the bit stream reproduced from the DVD disk and the RF clock for the synchronous transfer thereof by the disk drive unit 31 originally incorporated therein. The signal processing circuit 3
The video signal, audio data, subtitle data, etc. are separated by the demultiplexer in the signal processing circuit 3.
2 decodes MPEG-encoded video data and audio data by the decoder in 2.
Similarly, navigation data reproduced from a DVD disk by the disk drive unit 31 is interpreted by the CPU 33, and the reproduction operation and signal processing operation of the DVD disk are controlled according to the interpretation result.

On the other hand, when the authoring result is verified using the player 3, which sector is output from the CPU 33 in the same manner as when the disk in the disk drive unit 31 is actually reproduced. A command instructing a read operation such as reading, stopping reading, initial setting, etc., is transmitted by RS-232C communication.
The data is transferred to the CPU 22 of the I / F unit 2. The details of the operation flow of the CPU 33 when verifying the authoring result will be described later.

The CPU 22 of the I / F unit 2 controls the operation of the hard disk device 1 according to the command transferred from the CPU 33 of the player 3. For example,
From the CPU 33 of the player 3 to the CPU of the I / F unit 2
If the command transferred to the I / F unit 22 is a sector request command, the CPU 22 of the I / F unit 2 continues reading data corresponding to the sector request command from the hard disk device via SCSI, and stores the data in the internal RAM 2.
Take in 1. The parallel data taken into the internal RAM 21 is converted into serial data by a PISO (Serial In Parallel Out) circuit 23 and output to the player 3 as RF data in synchronization with a clock from a clock oscillator (OSC) 24. Also, the clock is RF
It is conveyed and output to the player 3 as a clock. The details of the flow of the operation of the CPU 22 when verifying the authoring result will be described later.

As described above, when the authoring result is verified using the player 3, the player 3 uses the hard disk via the I / F unit 2 instead of the data read from the built-in disk drive unit 31. The RF data and the RF clock including the navigation data supplied from the device 1 are supplied to the signal processing circuit 32 of the player 3, and the navigation data is further transmitted to the CPU 33. That is, in the verification system of the present embodiment, the RF data including the navigation data and the RF clock supplied from the hard disk device 1 via the I / F unit 2 are directly supplied to the signal processing circuit 32 of the player 3. I have.

As a result, the CPU 33 of the player 3
The navigation data supplied from the hard disk drive 1 via the I / F unit 2 is interpreted, and the I / F connected to the CPU 33 by the RS-232C is connected.
In the CPU 22 of the F unit 2, the CPU 3 of the player 3
3 controls the reproduction operation of the hard disk device 1 in accordance with the content interpreted. The signal processing circuit 32 of the player 3
Then, the authoring result supplied from the hard disk device 1 via the I / F unit 2 is processed to generate video data and audio data, and these data are sent to the monitor 4 or the speaker 5.

Therefore, in the verification system of the present embodiment, the navigation data stored in the hard disk device 1 and the authoring result also stored in the hard disk device 1 are used by using a commercially available or commercially available player 3. Can be verified. Also, since the authoring result is stored in the hard disk drive 1 and is not actually recorded on the DVD disk, it is easy to change the authoring data, and when the authoring data is changed. However, verification can be performed immediately by simply rewriting the contents of the hard disk device.

The authoring verification contents in the above-described embodiment include the following verification contents.

For example, as confirmation of the quality of the video and the quality of the audio, there is verified that there is no disturbance, no interruption, the level is correct, and the quality of the encoding. In addition, as confirmation of synchronous reproduction of video / audio / subtitles, it is verified whether data is recorded discontinuously and thus decoded at the correct time. To confirm navigation operation, verify that the menu operates correctly and that the operation of the remote controller is correctly reflected. As a confirmation of the content, verify that the content is authored as desired.

In this embodiment, the player 3
There is no special provision of a receiving decoder circuit or the like for receiving the RF data and RF clock supplied from the hard disk device 1 via the I / F unit 2, and the CPU 33 reads the navigation data and reads the navigation data. There is no change in the part to be interpreted, and there is no change in the configuration and circuit hardware located on the right side of the dotted line in FIG.

In the example of FIG. 1, the I / F unit 2 is depicted as an external device as viewed from the player 3, but this circuit configuration may be mounted on a board and incorporated in an actual player. In this case, the player and the hard disk drive 1 are directly connected via the SCSI cable.

The authoring data stored in the hard disk drive 1 is data that has been previously formatted (error correction code addition processing, 8/16 conversion processing, etc.) into the same image file as that recorded on the DVD disk. In this case, the I / F unit 2 in FIG. Further, the authoring result stored in the hard disk device 1 is a DVD.
In the case of video data, in the I / F unit 2 shown in FIG.
Correcting code) is equivalent if an additional process and an 8/16 conversion circuit are provided.

Further, in the present embodiment, the authoring result is stored in the hard disk device 1, but the authoring result may be stored in another storage device. Even when the authoring result is stored in another storage device, the I / F unit 2 controls the operation of the other storage device as described above.

Next, the flow of control in the CPU 33 of the player 3 when verifying the authoring result will be described in detail with reference to FIG.

In the flowchart of FIG. 2, when the power of the player 3 is turned on, the CPU 33 firstly proceeds to step S.
In step 1, initialization is performed. After the initialization in step S1, the CPU 33 turns off the power (O
FF), step S3 for opening the disc tray, step S4 for closing the disc tray, step S4 for controlling the drive of the disc drive unit, step S5 for remote control by the front remote controller 6, or from the front control panel 34 of the player 3. Step S6 for interpreting and operating the traveling system control command,
Step S8 of interpreting a navigation command (navigation data), and step S of restoring and controlling video / audio / caption based on the navigation command.
7 are performed.

Of these steps, steps S1, S6, S7, and S8 are parts that are not changed as functions of the player 3. Even when the verification system of the present embodiment verifies the authoring result, The CPU 33 of the player 3 is in charge of the control.

On the other hand, step S2, step S3, step S4, step S4 in the flowchart of FIG.
The processing of No. 5 is processing when the CPU 33 controls the internal disk drive unit 31 of the player 3. However, when verifying the authoring result by the verification system of the present embodiment, the CPU 33 of the player 3 A command is transmitted to the CPU 22 of the F unit 2 to control the I / F unit 2 and the hard disk device 1.

More specifically, in the verification system of the present embodiment, the CPU of the player 3 is operated by operating the remote controller 6 and the control panel 34.
When the power supply 33 enters the power-off state in step S2 in FIG. 2, a stop command is transmitted to the CPU 22 of the I / F unit 2 as shown in step S31 in FIG. Similarly, when the CPU 33 of the player 3 enters the disc tray open command state in step S3 of FIG. 2, the CPU 33 of the I / F unit 2 transmits a stop command as shown in step S31 of FIG.

On the other hand, the disc tray closing process of step S4 in FIG. 2 is originally a control process for closing the disc tray by the player 3, and the first sector is rotated by rotating the DVD disc in the built-in disc drive unit 31. Since this is a reading process, the CPU 33 of the player 3 when entering the disc tray close command state of step S4 of FIG.
At 41, a clear command is transmitted to the CPU 22 of the I / F unit 2, and then at step S42,
A size command is transmitted to the CPU 22 of the I / F unit 2 in step S43, and then an end sector command is transmitted to the CPU 22 of the
A start sector command is transmitted to the CPU 22 of the / F unit 2. As a result, the resetting operation of the I / F unit 2, the byte size per sector, the last sector value, and the like are set as fixed values in the CPU 22 in the I / F unit 2.

From the CPU 33 of the player 3 to the I
When the authoring data is reproduced from the hard disk device 1 by the command transmission control to the CPU 22 of the / F unit 2, when the sector value to be read next obtained in step S8 or step S6 in FIG. (Sector value for the DVD disk in the table). This sector value is stored in step S in FIG.
51 start sector command, the CPU of player 3
33 to the CPU 22 of the I / F unit 2,
Authoring data corresponding to the sector value is read from the hard disk drive 1. As long as the reproduction from the hard disk device 1 continues, the start sector command is transmitted as needed, and necessary data is stored in the I / F unit 2.
Is sent to the player 3.

Next, the flow of control in the CPU 22 of the I / F unit 2 when verifying the authoring result will be described in detail with reference to FIG.

In FIG. 6, C of the I / F unit 2
The PU 22 determines the CPU 3 of the player 3 in step S10.
It is determined whether or not a command has been received from step S3. If it is determined that the command has been received, the process proceeds to step S11 and the subsequent steps.
The process proceeds to step 23 and subsequent steps.

When it is determined in step S10 that the command has been received, the CPU 22 of the I / F unit receives the clear command from the CPU 33 of the player 3 in step S11. The number of bytes per sector, read preparation confirmation, and transfer conditions are set and confirmed again, and in step S13, the variables of the CPU 22 of the I / F unit 2 are reinitialized, and the operation is stopped.

Next, the CPU 22 of the I / F unit 2
Receives the size command from the player 3 in step S14, and in step S15,
Get the number of bytes per sector requested by U33.

The CPU 22 of the I / F unit 2
When an end sector command is received from the CPU 33 of the player 3 in step S16, the command is held as the last sector value in step S17, and when the read sector variable exceeds this value, reading is stopped.

Further, the CPU 22 of the I / F unit 2
When the stop command is received from the CPU 33 of the player 3 in step S21, the reading of the hard disk device 1 is stopped in step S22.

The CPU 22 of the I / F unit 2
When the start sector command is received from the CPU 33 of the player 3 in step S18, the sector variable is obtained by converting into the sector of the connected hard disk device (hard disk) in step S19, and the hard disk device is obtained in step S20. Is resumed. In the present embodiment, one sector = 512
If it is assumed to be a byte, the sector variable is obtained by the following equation.

Sector variable = start sector command argument × size command argument / 512 I / F The CPU 22 of the unit 2 behaves as described above, and the CPU 33 of the player 3
1 is transmitted to the CPU 22 of the I / F unit, and the same sector value as when controlling the I / F unit can be transmitted without any knowledge of the device connected to the I / F unit.
The authoring data stored in the hard disk device 1 can be extracted through the I / F unit 3 as if it were read from a DVD disk of the internal disk drive unit 31.

On the other hand, when it is determined in step 10 that no command has been received, the CPU 22 of the I / F unit
Determines whether or not the player 3 is in the stop state in step S23.

If it is determined in step S23 that the vehicle is in the stop state, the process returns to step S10. If it is determined that the vehicle is not in the stop state, in step S24, the data is read out once from the start sector represented by the sector variable. Number of sectors (16 in this embodiment)
(Assumed to be a sector) from the hard disk drive 1, and then, in step S25, the sector variable for the next read is updated. If the start sector command has not been received, the data is continuously read up to the last sector value. Each time a start sector command is received, the sector variable is changed and read from that sector.

Thereafter, it is determined in step 26 whether or not the sector value has exceeded the end sector. If not, the process returns to step S10.
After shifting to the stop state at 27, the process returns to step S10.

Finally, a detailed configuration example of the player 3 will be described with reference to FIG.

In FIG. 7, data recorded on the DVD disk is reproduced as RF data from the disk driver unit 31 for reproducing the DVD disk.

This RF data is sent to the configuration following the ECC / demodulation / SIPO circuit 41 corresponding to the signal processing circuit 32 in FIG. That is, the RF data has been subjected to signal processing described in the DVD format, and is restored to a data signal that can be handled in a subsequent stage by the ECC / demodulation / SIPO circuit 41.

The restored data signal is temporarily stored in the track buffer 42, read out, and sent to the demultiplexer 43. In the demultiplexer 43,
According to the data type and decoding time described in the data, the data signal is demultiplexed and distributed to each video / sub-picture (caption etc.) / Audio / navigation data.

The video / sub-picture / audio / navigation data are distributed to corresponding areas of the buffer memory 44, stored, read out, and sent to the decoder 45.

The decoder 45 decodes each of these data, and obtains the obtained video / sub-picture / audio data by using a DAC (Digital-Analog Converte).
r) The data is sent to 46, and the navigation data is sent to the system controller 51 (the CPU 33).

The DAC 45 converts the digital video / sub-picture / audio into an analog signal, and sends the video signal and the sub-picture signal to the mix amplifier 47 and the audio signal to the amplifier 48.

The mix amplifier 47 amplifies and mixes the video signal and sub-picture signals such as subtitles, and outputs the obtained signal to the video output terminal 49. The amplifier 48 amplifies the audio signal and outputs it to the audio output terminal 50.

The system controller 51 interprets the above navigation data, performs the above-described navigation based on the interpreted contents, and controls the disk drive unit 31 for various servos such as spindle servo, tracking servo, and focus servo. Send control signal. The system controller 51 is also supplied with an operation signal from the control panel 34 and an operation signal obtained by receiving infrared light from the remote controller 6 at the light receiving unit 35, and controls the operation of each unit according to the operation signal. Control.

When the player 3 shown in FIG. 7 is applied to the verification system shown in FIG. 1, the RF data from the I / F unit 2 and the R
An F clock is supplied, and various commands to the CPU 22 of the I / F unit 2 are transmitted.

As described above, in the data verification device according to the embodiment of the present invention, the I / O data is stored in the storage device (hard disk device 1) storing the authoring result.
F unit 2 reads out the authoring result,
The data is supplied to a commercially available or commercially available player 3 via only two lines of data (bit stream) and an RF clock which is a carrier clock thereof. These two signals are exactly the same as the signals obtained when the player 3 reproduces the disc with the built-in disc drive unit 31. Therefore, no special receiving decoder circuit is required on the player 3 side, and there is no change in the hardware configuration and circuit except for supplying the two signals to the signal processing circuit 32. Therefore, in the authoring data verification, The same reproduction operation and operation as when a disc is actually played can be confirmed and guaranteed. In addition, since the output of video (and subtitles) and audio is also performed using the hardware of the player 3, both of these qualities are guaranteed. Further, the transmission and reception of the control data between the player 3 and the I / F unit 2 requires the RS-232C
, The authoring result can be verified with only five lines in addition to the two lines of the RF data and the RF clock, and the connection is easy.

As described above, according to the embodiment of the present invention, the player 3 which is commercially available or is to be commercially available with only two wires.
Since the authoring data is supplied to the player 3 and the function of the player 3 is used as it is as a data verification device, the navigation operation of the DVD video data of the same quality as the disk reproduction operation can be verified. Audio and subtitle quality can be verified.

[0073]

As is apparent from the above description, according to the present invention, the authoring result stored in the storage means is verified by using, for example, a reproduction means which is a commercially available or to be commercially available player. Authoring results can be verified inexpensively and in a short time, a navigation operation of the same quality as that of a commercially available player can be confirmed, and the quality of reproduced video, audio, and subtitles can also be verified.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram illustrating a schematic configuration of a data verification system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a control flow in a CPU of a player when verifying an authoring result in the verification system of the present embodiment.

FIG. 3 is a flowchart showing processing in steps S2 and S3 of the flowchart in FIG. 2 in the verification system of the present embodiment.

FIG. 4 is a flowchart showing processing in step S4 of the flowchart in FIG. 2 in the verification system of the present embodiment.

FIG. 5 is a flowchart showing processing in step S5 of the flowchart in FIG. 2 in the verification system of the present embodiment.

FIG. 6 illustrates a CPU of an I / F unit when verifying an authoring result in the verification system according to the present embodiment.
6 is a flowchart showing a flow of control in.

FIG. 7 is a block circuit diagram showing a specific configuration example of a player used in the verification system of the present embodiment.

[Explanation of symbols]

1 hard disk drive, 2 I / F unit, 3
Player, 4 monitors, 5 speakers, 6 remote controllers, 21 RAM, 22, 33
CPU, 23 PISO circuit, 24 clock oscillator, 31 built-in disk drive unit, 32
Signal processing circuit, 34 Control panel, 35
Light receiving section

Claims (3)

[Claims] An internal disk drive capable of reproducing at least an internal disk, a signal processing circuit for generating a reproduction signal using reproduction data from the internal disk and a reference clock, and a reproducing operation reproduced from the internal disk A reproducing unit including at least a control circuit for generating reproduction operation control information based on the specification information; a storage unit for storing an authoring result including the reproduction operation specification information; and a read control for reading the authoring result stored in the storage unit A read clock control circuit, a reference clock generation circuit that generates a reference clock, and an output unit that outputs reproduced data of the authoring result read from the storage unit and a reference clock generated by the reference clock generation circuit. Interface means provided with The reproducing data and the reference clock of the authoring result output by the means are directly supplied to the signal processing circuit of the reproducing means, and the data of the authoring result stored in the storage means is verified using the reproducing means. Data verification device. 2. When performing data verification of an authoring result stored in the storage unit, a control circuit of the reproducing unit performs a reproducing operation based on reproduction operation specification information included in the authoring result output by the interface unit. 2. The method according to claim 1, wherein control information is generated, and said interface means controls an operation of reading an authoring result from said storage means based on the reproduction operation control information generated by a control circuit of said reproduction means. Data verification device. 3. The reproducing means comprises an operation section for operating a reproducing operation of the built-in disk. When verifying data of an authoring result stored in the storing means, a control circuit of the reproducing means is provided. Generates playback operation control information based on operation information from the operation unit,
2. The data verification apparatus according to claim 1, wherein said interface means controls an operation of reading an authoring result from said storage means based on reproduction operation control information generated by a control circuit of said reproduction means.