JP2000057693A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily manage the recording data of a memory without burdening a user by using a simple management device and to reduce power consumption by effectively using the recording data. SOLUTION: When a disk 100 is set in a disk driving part 1, a control part 6 judges whether or not data recorded on the disk 100 are recorded in a server 3. When the data are recorded in the server 3, the part 6 reads out the data from the server 3 without operating the disk driving part 1 to reproduce the data through a deformating and signal converting part 5. When the data are not recorded in the server 3, the part 6 reproduces the data recorded on the disk 100 by driving the disk driving part 1 through a decoder part 2 and the deformating and signal converting part 5 to record the reproduced data in the saver 3. Thus, since the recording data are read out from the saver and reproduced when there are the recording data in the server 3, the power consumption is reduced and also the management of the recording and reproducing of the server 3 is performed only by setting the disk 100 at the disk driving part 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a disk reproducing apparatus for reproducing digital information recorded on a disk such as a DVD.

[0002]

2. Description of the Related Art In recent years, in a CD (compact disk), MD (mini disk), DVD, or the like that records digital audio data, a so-called shock proof function (a sound skipping function) for reproducing audio data through a memory is known. Prevention function) is used. In this technology, data read from a disk is temporarily stored in a large-capacity memory, and then the data is read out and reproduced and output. For example, a technology for repeatedly reproducing an audio signal is known (JP-A-9-251719). ).

On the other hand, in recent years, since nonvolatile memories such as flash memories have increased in capacity and cost has decreased, video or audio servers using these nonvolatile memories have become widespread, and data read from a disk has to be stored. We are about to enter an era where it is technically and costly possible to record once in memory and then play it back.

[0004]

In the above-described disk reproducing apparatus, however, it is difficult to easily manage the data recorded in the memory by the user, and the management apparatus becomes complicated. .

In a portable disk reproducing apparatus using a battery, in particular, although the same data is stored in the memory, the same data is read from the disk and reproduced. However, in this case, compared to the case where data is read from the memory and reproduced, power is consumed for driving the disk, and there is a problem that long-term use by a battery is restricted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to easily manage recorded data in a memory by a simple management device without burdening a user. It is another object of the present invention to provide a disk reproducing apparatus capable of reducing power consumption by effectively using recorded data in a memory.

[0007]

To achieve the above object, a first aspect of the present invention is a disc reproducing apparatus having a server for reproducing data recorded on a disc and recording the reproduced data. In the above, when the disc is set, determining means for determining whether data recorded on the disc is recorded on the server, and that the data is recorded on the server by the determining means When it is understood, the disk drive unit is stopped, and a reproduction switching control unit for reading and reproducing the relevant data from the server is provided.

According to the first invention, at the time of starting reproduction of the disc, data (copyright data, etc.) for specifying the data recorded on the disc is read from the disc, and the data recorded on the server is read. Is read from the server, and when the two data match, it is determined that the data on the disc is recorded on the server. In such a case, the drive of the disk is stopped, and the corresponding data (volume) is read from the server and reproduced. As a result, power consumption can be reduced, and the above operation can be performed without burdening the user with respect to management and instructions of data recorded in the server.

According to a second aspect of the present invention, in a disk reproducing apparatus having a server for reproducing data recorded on a disk and recording the reproduced data, when the disk is set, data is recorded on the disk. Determining means for determining whether or not the data being recorded is recorded on the server, and when it is found by the determining means that the data is not recorded on the server, the data is read from the disc and reproduced, A reproduction / recording control means for recording the read data in the server.

According to the second aspect, at the time of starting reproduction of the disc, data for specifying data recorded on the disc is read from the disc, and data for specifying data recorded on the server is read from the disc. When the data is read from the server and the two data do not match, it is determined that the data on the disc is not recorded on the server. In such a case, data is reproduced from the disc, the reproduced data is recorded in the server, and management data for specifying the reproduced data is recorded in a management area of the server. This allows
Data (volume) can be recorded on the server without burdening the user with the operation of recording data on the server, and the data is reproduced by reading the data from the server based on the specific data from the next time. Ready to get.

[0013] A feature of the third invention is that when the reproduction / recording control means records data read from the disc to the server, if the capacity of the server cannot be recorded due to insufficient capacity, a means for notifying the user is provided. It is in.

According to the third aspect, the user is notified that the data read from the disk cannot be recorded because the capacity of the server is insufficient, and the user gives an appropriate instruction such as overwrite recording. Can be put out.

[0013] A feature of the fourth invention is that when the reproduction / recording means records data read from the disk in a server, the data is encrypted and recorded in the server.

According to the fourth aspect, the data read from the disk is encrypted and recorded, whereby
Data can generally not be read from the server, and copyright protection and the like can be performed.

[0015] The determination means of the fifth aspect of the invention compares the copyright data (copyright information) read from the set disc with the copyright data (copyright information) of the recording management data of the server. If the two data match, it is determined that the same data as the data recorded on the disk is recorded on the server.

A sixth aspect of the present invention is characterized in that display means for displaying a list of data specifying data recorded in the server, and when the specific data displayed by the display means is designated, the data is transmitted from the server. There is provided a reproduction control means for reproducing.

According to the sixth aspect, since a list of the data recorded on the server is displayed, the user does not need to manage the data recorded on the server.

A seventh aspect of the present invention is characterized in that display means for displaying a list of data specifying data recorded in the server, and when the specific data displayed by the display means is designated, the data is transmitted from the server. The erasure control means for erasing is provided.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the disk reproducing apparatus of the present invention. The disc reproducing apparatus drives a disc (DVD disc) 100 to rotate, and reads data from the disc 100 by a pickup (not shown), and a decoder for decoding data read from the disc drive 1. 2. A server 3 for recording data decoded by the decoder unit 2 in a built-in large-capacity memory, and a switch for selecting one of the output of the decoder unit 2 and the output of the server 3 and inputting it to the format and signal conversion unit 5. The switch 4 controls the deformat and signal conversion unit 5, the decoder unit 2, the server 3, the changeover switch 4, the deformat and signal conversion unit 5 for converting the input data into an analog signal after converting the data into an analog signal, The control unit 6 that performs control, inputs a user instruction or the like to the control unit 6, The operation unit 7 for displaying a variety of information, such as state
have.

The disc 100 of the present embodiment records video data (Video) and audio data (Audio), and the apparatus is assumed to be a DVD video player.

FIG. 2 is a block diagram showing a detailed example of the decoder section shown in FIG. The decoder unit 2 includes a disc 1
00, a drive control circuit 21 for controlling the rotation of the drive signal 00, a demodulation circuit and an error correction circuit 22 for demodulating the data read from the disk 100 and correcting the error, and a write control circuit 23 for temporarily writing the demodulated data to the track buffer 24. A track buffer 24 for temporarily holding demodulated data, a read control circuit 25 for reading demodulated data from the track buffer 24, and a system buffer 26 for temporarily holding demodulated management data and control data and then inputting the data to the control unit 6. ing.

FIG. 3 is a block diagram showing a detailed configuration example of the deformat and signal converter 5 shown in FIG. The deformatting and signal converting unit 5 includes a demultiplexer 51 for separating an input signal and distributing it to each buffer, a VBV buffer 52 for temporarily holding each data distributed by the demultiplexer 51, and a sub-picture buffer 5.
3, VBI buffer 54, audio buffer 55, D
SI buffer 56, video decoder 57 for decoding video data, sub-picture decoder 58 for decoding sub-picture data, VBI decoder 59 for decoding VBI data, letterbox converter 60, adder 61, and decomposing the format of audio data A format separator 62, a channel separator 63 for separating audio data into L and R channels, D / A converters 64 and 65 for converting digital audio data into analog data, a video output terminal 8 for outputting digital video data, It has output terminals 9 and 10 for outputting analog audio signals of the L and R channels. However, the format decoder 62, the channel separator 63, and the D / A converters 64 and 65 constitute an audio decoder 70.

Next, the operation of this embodiment will be described. The disc 100 is set in the disc drive unit 1, and thereafter, when the user inputs a reproduction instruction from the operation unit 7 to the control unit 6, the control unit 6 operates the disc drive unit 1 via the decoder unit 2. Thus, the data read from the disk 100 is decoded by the decoder unit 2, input to the terminal a of the changeover switch 4, and input to the server 3.

Here, the operation of the decoder unit 2 is shown in FIG.
This will be described in more detail with reference to FIG. When the drive control circuit 21 of the decoder unit 2 receives the reproduction instruction signal from the control unit 6, the disk drive unit 1 is operated to rotate the disk 100. Thus, the data read from the disk 100 by the pickup (not shown) is demodulated by the demodulation circuit and the error correction circuit 22, and the error is corrected. After that, the demodulated data is once written in the track buffer 24 by the write control circuit 23, and then read and output by the read control circuit 25. Also,
The management data of the disk 100 demodulated by the demodulation circuit and the error correction circuit 22 is input to the control unit 6 via the system buffer 26.

The control unit 6 determines whether or not the same data is recorded in the server 3 based on the management information read from the disk 100 and input via the system buffer 26. Switch 4 is switched to the terminal a side, and if the data is recorded, the switch is switched to the terminal b side.

When the terminal is switched to the terminal a side, the data output from the decoder unit 2 is input to the server 3 and also to the deformatting and signal conversion unit 5 through the changeover switch 4. The deformat and signal converter 5 deformats the input data to separate it into video data and audio data, outputs the video data as a digital signal from the video output terminal 8, and outputs the audio data as L and R channels. , And output from the audio output terminals 9 and 10, respectively. On the other hand, if the data input from the decoder unit 2 has not been recorded yet, the server 3 records this data in a large-capacity memory such as an internal flash memory.

Here, the deformat and signal converter 5
Will be described with reference to FIG. The input data is separated into various data by a demultiplexer 51, and these data are accumulated in a VBV buffer 52, a sub-picture buffer 53, a VBI buffer 54, an audio buffer 55, and a DSI buffer 56, respectively.
Then, the video data stored in the VBV buffer 52 is decoded by the video decoder 57, and then sent to the adder 61 via the letterbox converter 60.

The sub-picture data stored in the sub-picture buffer 53 is decoded by the sub-picture decoder 58 and sent to the adder 62. VB
The data stored in the I buffer 54 is
9 is sent to the adder 61. The adder 61 combines these input data to form a video signal, and this video signal is output from the video output terminal 8.

On the other hand, the audio data stored in the audio buffer 55 is sent to the audio decoder 70. In the audio decoder 70, first, the audio data is decomposed into PCM data A and 1-bit stream data B by the format decomposer 62. The PCM data A is converted by the channel separator 63 into PCs of the left and right channels.
M data (L) and PCM data (R), and the PCM data (L) and (R) of each channel are D / A
The signals are converted into analog signals by the converters 64 and 65 and output from the audio output terminals 9 and 10.

Next, a processing procedure for the control unit 6 to control the changeover switch 4 will be described with reference to a flowchart shown in FIG. Disk 10 in disk drive 1
When a reproduction instruction is issued from the operation unit 7 to the control unit 6 in a state where 0 has been set, in step 401, a pickup (not shown) picks up a diagram in the lead-in area of the disc 100 as shown in FIG. The copyright information of the control data block as shown in FIG. 6 is read, and this is notified to the control unit 6 via the decoder unit 2.

Next, in step 402, the control unit 6 searches for a copyright information recorded in the management area UTOC of the server 3 as shown in FIG.

Thereafter, the control unit 6 determines in step 403 whether the two copyright information IDs read out as described above match, so that the recording volume (data) of the disk 100 is transmitted to the server 3. It is checked whether or not the ID has been recorded. If the ID does not match and the ID has not been recorded in the server 3, the process proceeds to step 405, and the changeover switch 4 is switched so as to select the output of the decoder unit 2 side. On the other hand, if the IDs match and data is recorded in the server 3, the control unit 6 proceeds to step 404 and switches the changeover switch 4 so as to select the output side of the server 3.

The controller 6 switches the changeover switch 4 to the terminal b side in step 404, and then proceeds to step 406, in which the drive of the disk 100 by the disk drive unit 1 is stopped and the operation unit 7 specifies the operation. The title data is read from the server 3 and reproduced.

In step 405, the control unit 6 switches the changeover switch 4 to the terminal "a".
To read and reproduce the data of the title designated by the operation unit 7 from the disc 100, and at this time,
The read data is recorded on the server 3. At this time, VMG (video manager) and VTSI (video title set information) are recorded first.

Here, in the memory of the server-3, as shown in FIG. 7, volumes # 0 to #n are recorded starting from the management area UTOC. Each volume #i corresponds to each disk #i, and the copyright information and the VMG / VTSI for each disk ID are recorded.
It can be performed using.

Copyright information and VMG / VT
The recording of SI is performed during a preparation period for starting reproduction. The recording to the server 3 is decoded by the decoder unit 2 and recorded in a stream (transport stream) in units of transport packets including a header which is a descrambled signal. That is, audio,
Video and other data are recorded in a mixed state.

As shown in FIG. 8, VMG is a file for managing the entire volume, and VMG is VMG control data. VTS is a set of titles constituting a volume, and VTSI is control data included in VTS. UTOC supports VMG, VTSI and video
Manage title objects.

According to the present embodiment, when reproduction is instructed with the disk 100 set in the disk drive 1, if the data recorded on the disk 100 has already been recorded in the server 3, the disk drive 1 Since the driving is stopped and the corresponding data is read from the server 3 and reproduced, the power consumption can be greatly reduced. For this reason, especially when the apparatus is a portable type driven by a battery, the reproduction time can be easily extended. Further, when reproducing the recorded data of the server 3 described above,
The user simply sets the disc 100 in the disc drive unit 1 and the device automatically performs the rest. Therefore, the user can easily and easily manage the data recorded on the server 3 without being aware of the data. The above effects can be obtained.

Also, reproduction is instructed with the disc 100 set in the disc drive unit 1, and at this time,
If the recording data of No. 0 is not recorded on the server 3, the data is reproduced from the disc 100 and the reproduced data is automatically recorded on the server 3. Without the need for
Data recording of the server 3 can be performed easily and without requiring dedicated time.

The disk 100 is connected to the disk drive 1
, The corresponding management information is automatically extracted from the server 3 according to the disk ID, so that the disk management can be performed without the user being conscious.
This means that the user can operate the server 3 without being aware of the existence of the server 3, which eliminates the need for complicated management devices and user selection instructions, and makes it very easy to perform disk management from the user's point of view. Thus, the usability of the device can be improved. Furthermore, if a mode for searching the management area of the server 3 is provided separately, the disk 10
The server 3 can be used without any set of 0.

When the data recording capacity of the server 3 is insufficient, the fact is displayed on the display of the operation unit 7 to notify the user, and the user can request, for example, to overwrite the existing data or to record the oldest data. It is also possible to erase data and record new data.

A list of data titles recorded in the server 3 is displayed on the display of the operation unit 7,
Among them, it is possible to easily read the title specified by the user from the server 3 and reproduce it, or to delete the title specified by the user.

Further, when copyright protection is required, the server 3 uses a security system A by encryption.
For example, RC4 can be easily applied to the stream cipher.

FIG. 9 is a block diagram showing a second embodiment of the disk reproducing apparatus of the present invention. However, the same parts as those in the first embodiment shown in FIG.
In addition, a description thereof will be omitted as appropriate. The disc 100 of this example is a DVD audio disc in which audio data is mainly recorded, and the apparatus is assumed to be a DVD audio player. Therefore, there is no portion for reproducing a moving image. After the audio data output from the data coder 2 is reformatted by the deformatter 11, the channel separation unit 12
Channel and R channel audio data, and the audio data of each channel is converted to a D / A converter 13.
, An L-channel analog audio signal is output from an output terminal 9 and an R-channel analog audio signal is output from an output terminal 10, so that only the audio signal is reproduced exclusively. I have. Other configurations are the same as those of the first embodiment shown in FIG.

Further, as described above, in order to exclusively reproduce the audio data, a specific map diagram of the lead-in area of the disc 100 shown in FIG. 11 and a control data block in the lead-in area shown in FIG. 13 is different from that of the first embodiment, and therefore the map of the server 3 shown in FIG. 13 is different from that of the first embodiment.
Although the contents of the schematic diagram of the DVD audio format shown in FIG. 4 are also different, the essential functions are the same as those of the first embodiment.

In the case of audio, the TOC (also referred to as SAPP) is recorded in sectors 8-15 in FIG. However, when the sector 8-15 is used for another purpose, a TOC area is provided before the AMG in the data area, and is recorded here.

When a still image is reproduced from an audio disk arranged between the AMG and the ATS, the still image is recorded in a region before the ATSI during a preparation period for starting reproduction.

As a result, the operation of this embodiment is the same as that of the first embodiment as shown in the flowchart of FIG. 10, and when the music of the disk 100 set in the disk drive 1 is recorded in the server 3, Then, without driving the disc 100, the corresponding music is read from the server 3 and reproduced. When the corresponding music piece is not recorded on the server 3, the disc 100 is reproduced. At this time, the reproduced music piece is automatically recorded on the server 3, so that this embodiment is also the first embodiment. Has the same effect as.

[0049]

As described above in detail, according to the disk reproducing apparatus of the present invention, the recording data in the memory can be easily managed by a simple management apparatus without imposing a burden on the user. In addition, the power consumption can be reduced by effectively using the recording data in the memory.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a disk reproducing apparatus according to the present invention.

FIG. 2 is a block diagram illustrating a detailed example of a decoder unit illustrated in FIG. 1;

FIG. 3 is a block diagram illustrating a detailed configuration example of a deformat and signal conversion unit illustrated in FIG. 1;

FIG. 4 is a flowchart showing an operation procedure of the apparatus shown in FIG.

FIG. 5 is a specific map diagram of a lead-in area of the disc shown in FIG. 1;

FIG. 6 is a specific map diagram of a control data block in the lead-in area shown in FIG.

FIG. 7 is a specific map diagram of the server shown in FIG. 1;

FIG. 8 is a diagram for explaining a video format of the DVD video shown in FIG. 1;

FIG. 9 is a block diagram showing a second embodiment of the disc reproducing apparatus of the present invention.

10 is a flowchart showing an operation procedure of the device shown in FIG.

FIG. 11 is a specific map diagram of a lead-in area of the disk shown in FIG.

FIG. 12 is a specific map diagram of a control data block in a lead-in area shown in FIG. 11;

FIG. 13 is a specific map diagram of the server shown in FIG. 9;

FIG. 14 is a diagram illustrating an audio format of a DVD.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc drive part 2 Decoder part 3 Server 4 Changeover switch 5 Deformat and signal conversion part 6 Control part 7 Operation part 8 Video output terminal 9, 10 Output terminal 11 Deformat part 12 Channel separation part 13, 64, 65 D / A Converter 21 Drive control circuit 22 Demodulation circuit and error correction circuit 23 Write control circuit 24 Track buffer 25 Read control circuit 26 System buffer 51 Demultiplexer 52 VBV buffer 53 Sub-picture buffer 54 VBI buffer 55 Audio buffer 56 DSI buffer 57 Video decoder 58 Sub picture decoder 59 VBI decoder 60 letter box converter 61 adder 62 format decomposer 63 channel separator 70 audio decoder 100 disk

Claims (7)

[Claims] 1. A disk reproducing apparatus having a server for reproducing data recorded on a disk and recording the reproduced data, wherein when the disk is set, the data recorded on the disk is Determining means for determining whether or not the data is recorded on the server; and determining that the data is recorded on the server, the disk drive is stopped, and the corresponding data is read from the server and reproduced. And a reproduction switching control means for performing the above operation. 2. A disk reproducing apparatus having a server for reproducing data recorded on a disk and recording the reproduced data, wherein when the disk is set, the data recorded on the disk is transmitted to the disk. Determining means for determining whether or not the data is recorded on the server; if the determining means indicates that the data is not recorded on the server, the data is read from the disk and reproduced, and the read data is stored in the server. And a reproduction / recording control means for recording data on a disc. 3. When the reproduction / recording control means records the data read from the disc on the server, if the capacity of the server cannot be recorded due to insufficient capacity, a notifying means for notifying the fact is provided. 3. The disc reproducing apparatus according to claim 2. 4. The disk reproducing apparatus according to claim 2, wherein when the reproduction / recording control unit records the data read from the disk on a server, the data is encrypted and recorded on the server. . 5. The judging means compares the copyright data (copyright information) read from the set disc with the copyright data (copyright information) of the recording management data of the server, and determines whether both data are the same. 5. The disc reproducing apparatus according to claim 1, wherein when the data matches, it is determined that the same data as the data recorded on the disc is recorded on the server. 6. A display means for displaying a list of data specifying data recorded on the server, and a reproduction control means for reproducing the data from the server when the specific data displayed by the display means is designated. 6. The electronic device according to claim 1, wherein:
The disc reproducing device according to the above. 7. A display means for displaying a list of data specifying data recorded on the server, and an erasure control means for deleting the data from the server when the specific data displayed by the display means is designated. 7. The electronic device according to claim 1, wherein:
The disc reproducing device according to the above.