JPH09198844A - Method and apparatus for reproducing signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to cut the scene to become a problem in the expression by deciding a predetermined flag in additional information, and skipping to a skip destination address in the information from the present address if it is the predetermined flag. SOLUTION: When additional information is read from the output data of a demodulator in an additional information reader 101 and a switch 103 is ON in a decision controller 102, the predetermined flag in the output additional information of the reader 101 is decided. If the predetermined flag is ON, the skip destination address in the output information of the reader 101 is output. If the predetermined flag is OFF, a reproducing process is continued. When the skip destination address is input from the controller 12 in a servo control signal generator 104, a servo control signal is output to a rotary servo circuit and an optical pickup servo circuit based on the destination address.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an age restriction function (rating) of cutting or blurring a video / audio signal according to the age of a viewer of the video / audio software, and a portion preset with the video / audio software. The present invention relates to a signal reproducing apparatus having a trailer function for making a physical appearance, a demonstration function in which only a fragmentary demonstration can be viewed without knowing key information, and a signal reproducing method thereof.

[0002]

2. Description of the Related Art A conventional flow from creation to reproduction of video / audio software and a signal reproducing apparatus for video / audio software will be described.

FIG. 16 shows the flow from the creation to the reproduction of conventional audiovisual software. First, in the audiovisual software creating step 1601, the audiovisual software is created, and then in the audiovisual software editing step 1602, the audiovisual software created by means of cutting or blurring the sexual scene or the violent scene. Add expression restrictions. Then, in the medium recording step 1603 of the audiovisual software, the edited audiovisual software is recorded on a recording medium such as a disk or a tape and distributed as a medium. Then, in the video / audio software reproducing step 1604, the distributed video / audio software is reproduced by the viewer on the signal reproducing apparatus.

At the time of creating a trailer, it is sufficient to extract and connect necessary parts in the video / audio software editing step 1602. Fig. 17: Playback step 1 of the above audiovisual software
The configuration of a conventional signal reproducing apparatus for a disk medium used in 604 is shown.

In FIG. 17, reference numeral 1701 denotes a disk (recording medium), the disk 1701 is rotated by a spindle motor 1702, the data recorded on the disk 1701 is read by an optical pickup 1703, and the output of this optical pickup 1703. The data is subjected to waveform equalization so that it can be stably read by the waveform shaping circuit 1707. The demodulation circuit 1708 demodulates the output data (modulated signal) of the waveform shaping circuit 1707, outputs the demodulated data to the error correction circuit 1709, and outputs the additional information included in the demodulated data to the control circuit 1706. To be done.

Then, in the control circuit 1706, the rotation servo circuit 1704 for controlling the rotation of the spindle motor 1702 based on the address information in the additional information included in the output data of the demodulation circuit 1708, and the optical pickup 1.
Optical pickup servo circuit 17 for position control of 703
A control signal for generating a servo signal is output to 05.

The error correction circuit 1709 detects and corrects an error in the output data of the demodulation circuit 1708. The video decoder 1710 extracts only video data from the output data of the error correction circuit 1709 and decodes it. Then, the video DA converter 1711 converts the digital signal into an analog signal and outputs the analog signal.
Further, in the audio decoder 1712, the error correction circuit 170
After only the audio data is extracted from the output data of 9 and decoded, the audio DA converter 1713 converts the digital signal into an analog signal and outputs it.

[0008]

However, in the process of creating the audiovisual software as described above, the editing operation (step-
Since 1602) is included, there is a problem that one medium corresponds to only one expression restriction, and a fine age restriction function cannot be realized on one medium. In addition, when the trailer is included, it is necessary to record video and audio software that is duplicated with the main part, which is a problem of redundancy.

Further, the conventional signal reproducing apparatus is not provided with an age restriction function, a trailer function, and a demonstration function. Therefore, in view of the above problems, the present invention
We provide a signal reproduction method and device that can reproduce the original audiovisual software or audiovisual software that supports multiple expression restrictions on one medium, and also can reproduce the trailer without increasing redundancy too much. It is an object of the present invention to provide a signal reproducing method and an apparatus thereof that can be performed, and further provide a signal reproducing method and an apparatus that can only see a fragmentary trailer without knowing the key information.

[0010]

In order to achieve this object, the signal reproducing method of the first invention reads and demodulates data recorded on a recording medium from a designated address, and decodes the demodulated data. And a signal reproducing method for outputting at least one of a video signal and an audio signal,
The additional information included in the demodulated data is read, and then a predetermined flag in the additional information is determined. If the predetermined flag is off, reproduction is continued, and if the predetermined flag is on, skip in the additional information. The feature is that the reproduction is performed by jumping to the destination address.

In the signal reproducing method of the second invention, the data recorded on the recording medium is read and demodulated from the specified address, the demodulated data is decoded, and at least one of the video signal and the audio signal is output. When the decoding process is performed, the additional information included in the demodulated data is read, then a predetermined flag in the additional information is determined, and if the predetermined flag is off, the demodulated data is obtained. Is decoded as it is, and if a predetermined flag is turned on, the demodulated data is modified and then decoded.

Further, in the signal reproducing method of the third invention, the data recorded on the recording medium is read and demodulated from the specified address, the demodulated data is decoded, and at least one of the video signal and the audio signal is output. In the signal reproducing method, the table of contents information included in the demodulated data is read, a plurality of address sections formed of a pair of a start address and an end address therein are stored, and then the additional information included in the demodulated data is stored. If the current address is read, the current address is compared with the stored multiple address sections, and the current address is included in any of the multiple address sections, the address section containing the current address If the current address is not included in any of the multiple address sections, the playback is skipped to the end address of It is characterized in that the process is repeated to continue.

In the signal reproducing method of the fourth invention, the data recorded on the recording medium is read and demodulated from the designated address, the demodulated data is decoded, and at least one of the video signal and the audio signal is output. When performing the decoding process, the table of contents information included in the demodulated data is read and a plurality of address sections formed of a pair of a start address and an end address are stored therein, and then the demodulated data is reproduced. The current address in the additional information included in is read, and if the current address is included in any of the multiple address sections, the demodulation data is modified, while the current address is included in any of the multiple address sections. If is not included, do not modify the demodulated data,
Finally, the decoding process of the demodulated data with or without modification is performed.

Further, in the signal reproducing method of the fifth invention, the data recorded on the recording medium is read and demodulated from the designated address, the demodulated data is decoded, and at least one of the video signal and the audio signal is output. In the signal reproducing method, the table of contents information included in the demodulated data is read, a plurality of address sections composed of a pair of a start address and an end address therein are stored, and addresses of the stored plurality of address sections are designated. The address section is repeatedly reproduced.

In the signal reproducing method of the sixth invention, the data recorded on the recording medium is read and demodulated from the designated address, the demodulated data is decoded, and at least one of the video signal and the audio signal is output. In the signal reproducing method, the ID information included in the demodulated data is compared with the input ID information input, and if they do not match, the table of contents information included in the demodulated data is read and the start of the contents is started. A plurality of address sections composed of a pair of an address and an end address are stored, addresses of the plurality of stored address sections are designated, and reproduction of the address section is repeated.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same configurations as those of the conventional example shown in FIG.

A first embodiment of the present invention will be described. FIG. 1 is a block diagram of a control circuit of a signal reproducing device according to a first embodiment of the present invention. The control circuit shown in FIG. 1 is a circuit provided in place of the conventional control circuit 1706.

The additional information reading circuit 101 for reading the additional information included in the output data of the demodulation circuit 1708 and the switch 103 are connected, and an address is generated according to the ON / OFF signal of the switch 103 and the additional information output from the additional information reading circuit 101. And a servo control signal generator for generating a servo control signal to the rotation servo circuit 1704 and the optical pickup servo circuit 1705 based on the address output from the determination control circuit 102. It is formed from the circuit 104.

The operation of the judgment control circuit 102 will be described with reference to the flowchart of FIG. The output additional information from the additional information reading circuit 101 is read (step-20
1) Next, it is confirmed whether or not the switch 103 is turned on (step-202). If the switch 103 is turned on, a predetermined flag in the output additional information of the additional information reading circuit 101 is judged (step-203). If the predetermined flag is ON, the jump destination address in the output additional information of the additional information reading circuit 101 is output (step-204), and if the predetermined flag is OFF or the switch 103 is OFF in step-202, the reproduction processing is performed. Is continued (step-205).

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, in the additional information reading circuit 101, the demodulation circuit 1708
When the additional information is read from the output data of No. 1 and the switch 103 is turned on in the determination control circuit 102, a predetermined flag in the output additional information of the additional information reading circuit 101 is determined, and if the predetermined flag is on If the jump destination address in the output additional information of the information reading circuit 101 is output and the predetermined flag is off, the reproduction process is continued. Further, the reproduction process is continued even when the switch 103 is off. Then, when the jump destination address is input from the determination control circuit 102 in the servo control signal generation circuit 104, a servo control signal is output to the rotary servo circuit 1704 and the optical pickup servo circuit 1705 based on the jump destination address.

As described above, according to this embodiment, the determination control circuit 102 determines the predetermined flag in the additional information recorded in the recording medium 1701 in advance, and if the predetermined flag is ON, the additional information in the additional information is determined. By outputting the jump destination address to the servo control signal generation circuit 104 and performing control so as to skip from the current address to the jump destination address, it is possible to cut off the sexual scene and the violent scene that pose a problem in terms of expression. Further, by providing the switch 103, it is possible to select whether to cut the sexual scene or the violent scene according to the age of the viewer.

In this embodiment, the judgment control circuit 10
Reference numeral 2 determines a predetermined one kind of flag in the additional information recorded in advance on the recording medium 1701, and the servo control signal generation circuit 104 skips to the jump destination address corresponding to the flag. There may be a plurality of types of predetermined flags. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country. That is, the code of the country in which the signal reproduction device is placed is preset in the signal reproduction device, and the determination control circuit 1
02 may be determined by selecting only a flag corresponding to a predetermined country code from a plurality of types of flags. In this case, the jump destination address corresponding to the flag can be changed for each country.

In this embodiment, the flag and the jump destination address are included in the additional information read from the demodulation circuit 1708, but the error correction circuit 1709 after the demodulation circuit is included.
The flag and the jump destination address may be recorded in the portion of the recording medium 1701 that is read out later. Even in this case, rating control can be similarly easily realized.

In this embodiment, the switch 103 is a changeover switch, but I
You may switch based on D. In other words, the viewer who knows the correct ID can turn off the switch 103, and the viewer who does not know the correct ID watches the switch 103 in the on state. As a result, ratings such as age restrictions can be automatically, safely and easily realized by not giving the ID to those who are not suitable for viewing. It is also possible to eliminate the switch 103 and always determine the flag.

A second embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a configuration diagram of a circuit added to the signal reproducing device according to the second embodiment of the present invention. The circuit shown in FIG. 3 is a circuit inserted between the conventional error correction circuit 1709 and the video decoder 1710 and the audio decoder 1712.

The additional information reading circuit 301 for reading the additional information included in the output data of the demodulation circuit 1708 and the switch 303 are connected, and the correction is made according to the ON / OFF signal of the switch 303 and the output additional information of the additional information reading circuit 301. A determination circuit 302 (details will be described later) that outputs data of no or a correction method (corrected), and an error correction circuit 17 based on output data of the determination circuit 302.
It is formed of a code correction circuit 304 that corrects the output data of 09 or outputs it to the video decoder 1710 and the audio decoder 1712 without correction.

The operation of the decision circuit 302 will be described with reference to the flowchart of FIG. The output additional information of the additional information reading circuit 301 is read (step-40
1) Then, it is confirmed whether or not the switch 303 is turned on (step-402). When the switch 303 is on, the predetermined flag in the output additional information of the additional information reading circuit 301 is determined (step -403), and if the predetermined flag is on, the correction method described with the flag is used. Output to the code correction circuit 304 (step-40
4) If the predetermined flag is off or if the switch 303 is off in step -402, the uncorrected data is output to the code correction circuit 304 (step-40).
5).

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, the additional information reading circuit 301 reads additional information from the output data of the demodulation circuit 1708. Next, the determination circuit 302 determines a predetermined flag in the output additional information of the additional information reading circuit 301 when the switch 303 is on,
When the predetermined flag is on, the correction method described with the flag is output to the code correction circuit 304, and the code correction circuit 304 outputs the error correction circuit 17 based on the input correction method.
09 output data (data stored in the storage medium 1701) is corrected and output to the video decoder 1710 and the audio decoder 1712, and when the predetermined flag is off or the switch 303 is off, the code correction circuit 304 has an error. The output data of the correction circuit 1709 is directly output to the video decoder 1710 and the audio decoder 1712 without being corrected. The data (corrected or uncorrected data) input in the video decoder 1710 and the audio decoder 1712 is decoded.

In the code correction circuit 304, based on the correction method described with the flag, for example, the video signal is partially blurred or partially replaced with another video signal, and the audio signal is reproduced. The signal is modified by lowering the signal level or replacing it with another audio signal.

As described above, according to the present embodiment, the determination circuit 302 determines the predetermined flag in the additional information recorded in advance on the recording medium 1701, and when the predetermined flag is on, the code correction circuit. Reference numeral 304 denotes an error correction circuit 170 based on the correction method described with the flag.
By correcting the output data of No. 9 and outputting the data to the video decoder 1710 and the audio decoder 1712, the video signal in the sexual scene or the violent scene, which is a problem in terms of expression, may be partially blurred or partially. The video signal may be replaced with another video signal, and the audio signal may be modified such that the signal level is lowered or the audio signal is replaced with another audio signal. Further, by providing the switch 303, it is possible to select whether to correct the video signal and the audio signal in the sexual scene or the violent scene according to the age of the viewer.

In the present embodiment, the determination circuit 302 determines one predetermined type of flag in the additional information recorded on the recording medium 1701 in advance, and the code correction circuit 304 is described along with the flag. Although the signal from the error correction circuit 1709 is corrected corresponding to the flag based on the correction method and output to the video decoder 1710 and the audio decoder 1712, there may be a plurality of predetermined flags. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country. That is, the code of the country in which the signal reproduction device is placed is preset in the signal reproduction device, and the determination circuit 302
It suffices to select and determine only the flag corresponding to the predetermined country code from the plurality of types of flags. In this case, the correction method corresponding to the flag can be changed for each country.

In the present embodiment, the flag and the correction method are included in the additional information read from the output data of the demodulation circuit 1708, but the error correction circuit 1 after the demodulation circuit 1
The flag and the correction method may be recorded in the information portion read after 709. Even in this case, rating control can be similarly easily realized.

In this embodiment, the switch 303 is a changeover switch, but I
You may switch based on D. In other words, a viewer who knows the correct ID can turn off the switch 303, and a viewer who does not know the correct ID can watch with the switch 303 turned on. As a result, ratings such as age restrictions can be automatically, safely and easily realized by not giving the ID to those who are not suitable for viewing. Alternatively, the switch 303 may be omitted and the flag determination may always be performed.

A third embodiment of the present invention will be described below with reference to the drawings. FIG. 5 is a block diagram of the control circuit of the signal reproducing apparatus according to the third embodiment of the present invention.
The control circuit shown in FIG. 5 is provided in place of the conventional control circuit 1706.

The table-of-contents information for reading the table-of-contents information recorded on the recording medium 1701 included in the output data of the demodulation circuit 1708 and outputting the data of a plurality of address sections consisting of a pair of start and end addresses in this table-of-contents information Reading circuit 501 and this table of contents information reading circuit 50
A storage circuit 502 for storing data of a plurality (N pairs) of address sections each including a pair of a start address and an end address output from 1 as shown in FIG. 13, and a demodulation circuit 1708.
Additional information reading circuit 503 for reading additional information included in the output data of
The address reading circuit 504 for extracting the current address from the output additional information of the switch and the switch 506 are connected, and the ON / OFF signal of the switch 506 and the current address extracted by the address reading circuit 504 and the address information in the storage circuit 502 are determined according to the ON / OFF signal. A comparison search circuit 505 that outputs an address (details will be described later), and the rotation servo circuit 170 based on the address output from the comparison search circuit 505.
4 and a servo control signal generation circuit 507 for generating a servo control signal for the optical pickup servo circuit 1705.

The operation of the comparison search circuit 505 will be described with reference to the flowchart of FIG. The current address in the additional information recorded on the recording medium 1701 extracted by the address reading circuit 504 is read (step-601), and it is confirmed whether the switch 506 is on (step-602). When the switch 506 is on, the counter i is initialized to 1 (step-60
3) Compare the read current address with the i-th group address section consisting of a pair of the start address and the end address in the memory circuit 502, and determine whether the address is included in the i-th group address section. Whether or not (step-6)
04). When it is determined that the address is not included in the i-th address section, the value of the counter i is incremented by 1 (step-605), and the value of the counter i is compared with the number N of the address sections. Then, it is judged whether or not the counter i has exceeded the final value N (step-606). If the counter i has not yet exceeded the final value N, the step-
Returning to 604, the determination of whether the address is included in the i-th address section is continued. If the counter i exceeds the final value N, or if the switch 506 is off at step -602, the reproduction is continued (step -607). On the other hand, when it is determined in step-604 that the address is included in the i-th group address section, the end address in the i-th group address section is output (step-608).

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, in the table-of-contents information reading circuit 501, the demodulation circuit 170
The table of contents information recorded on the recording medium 1701 is read from the output data of No. 8 and the memory circuit 502 stores a plurality of address sections composed of a pair of a start address and an end address in the table of contents information. Next, the additional information reading circuit 503 reads the additional information from the output data of the demodulation circuit 1708, and the address reading circuit 504 extracts the current address in this additional information.

In the comparison search circuit 505, when the switch 506 is on, the address reading circuit 50
The current address extracted by 4 is compared with the address information of the storage circuit 502, and if the current address is included in any of the plurality of address sections, the end address of the corresponding address section is output, When the predetermined flag is off or when the switch 506 is off, the reproduction process is continued.

Then, the servo control signal generation circuit 507 outputs a servo control signal for the optical pickup servo circuit 1705 and the rotary servo circuit 1704 based on the end address output from the comparison search circuit 505.

As described above, according to the present embodiment, the comparison search circuit 505 has a plurality of address sections each consisting of a pair of a start address and an end address in the table-of-contents information recorded in the recording medium 1701 in advance, Recording medium 1701
If the current address is included in any of the plurality of address sections, the end address of the corresponding address section is sent to the servo control signal generation circuit 507. By outputting and controlling so as to skip from the current address to the end address of the corresponding address section, it is possible to cut sexual scenes and violent scenes that are problematic in terms of expression.
Further, by providing the switch 506, whether to cut the sexual scene or the violent scene can be selected according to the age of the viewer.

In this embodiment, the comparison search circuit 50 is used.
Reference numeral 5 is a case where a predetermined one kind of a plurality of address sections recorded in the recording medium 1701 in advance is compared with a current address, and the current address is included in any of the plurality of address sections. In the above, the servo control signal generation circuit 507 skips to the end address of the corresponding address section, but there may be a plurality of sets of a plurality of address sections. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country. That is, the code of the country in which the signal reproducing device is placed is set in advance in the signal reproducing device, and the comparison search circuit 505 selects a plurality of addresses corresponding to a predetermined country code from a plurality of sets of a plurality of address sections. It suffices to select only the section for determination.

In this embodiment, the switch 506 is a changeover switch, but I
You may switch based on D. In other words, the viewer who knows the correct ID can turn off the switch 506, and the viewer who does not know the correct ID will watch with the switch 506 turned on. As a result, ratings such as age restrictions can be automatically, safely and easily realized by not giving the ID to those who are not suitable for viewing. It is also possible to eliminate the switch 506 and always compare the addresses.

A fourth embodiment of the present invention will be described below with reference to the drawings. FIG. 7 is a configuration diagram of a circuit added to the signal reproducing device according to the fourth embodiment of the present invention. The circuit shown in FIG. 7 is a circuit inserted between the conventional error correction circuit 1709 and the video decoder 1710 and the audio decoder 1712.

The table of contents information recorded on the recording medium 1701 included in the output data of the demodulation circuit 1708 is read, and an address section consisting of a pair of a start address and an end address in this table of contents information and a correction method corresponding to this section are read. A table-of-contents information reading circuit 701 that outputs a plurality of (N pairs) of formed data, and this table-of-contents information reading circuit 701.
A plurality of (N sets) of data output from the storage circuit 702, an additional information reading circuit 703 for reading additional information included in the output data of the demodulation circuit 1708, and this additional information reading The address reading circuit 704 for extracting the current address from the output additional information of the circuit 703 is connected to the switch 706, and the ON / OFF signal of the switch 706 and the current address extracted by the address reading circuit 704 and the address information in the memory circuit 702 are connected. A comparison search circuit 705 (details will be described later) that outputs data of no correction or a correction method (correction) according to the above, and the output data of the error correction circuit 1709 is corrected based on the output data of the comparison search circuit 705. Video decoder 1710 and audio decoder 17 with or without modification
It is formed of a code correction circuit 707 for outputting to 12.

The operation of the comparison search circuit 705 will be described with reference to the flowchart of FIG. The current address of the additional information recorded on the recording medium 1701 extracted by the address reading circuit 704 is read (step-801), and it is confirmed whether the switch 706 is on (step-802). When the switch 706 is on, the counter i is initialized to 1 (step-80
3) Compare the read current address with the i-th address section consisting of a pair of start address and end address in the memory circuit 702, and determine whether the address is included in the i-th address section. Whether or not (step-8)
04). When it is determined that the address is not included in the i-th address section, the value of the counter i is incremented by 1 (step-805), and the value of the counter i is compared with the number N of the address sections. Then, it is judged whether the counter i has exceeded the final value N (step-806). If the counter i has not yet exceeded the final value N, the step-
Returning to 804, the determination of whether or not the address is included in the i-th address section is continued. If the counter i exceeds the final value N, or if the switch 506 is off at step -802, uncorrected data is output (step -807). On the other hand, when it is determined in step-804 that the address is included in the i-th address section, the correction method paired with the i-th address section is output (step-808).

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, in the table-of-contents information reading circuit 701, the demodulation circuit 170
The table of contents information recorded on the recording medium 1701 is read from the output data of No. 8 and is stored in the memory circuit 702 in a plurality of address sections including a set of a start address, an end address, and a correction method in the table of contents information and each section. The corresponding correction method is stored. Next, the additional information reading circuit 703
At, the additional information is read from the output data of the demodulation circuit 1708, and the address reading circuit 704 extracts the current address in this additional information. Then, in the comparison / retrieval circuit 705, when the switch 706 is on, the current address extracted by the address reading circuit 704 is compared with the address information of the memory circuit 702,
When the current address is included in any of the plurality of address sections, the correction method described with the corresponding address section is output to the code correction circuit 707, and the code correction circuit 707 performs the correction method. The output data of the error correction circuit 1709 is corrected based on the above, and is output to the video decoder 1710 and the audio decoder 1712,
If the current address is not included in any of the plurality of address sections or the switch 706 is off, uncorrected data is output to the code correction circuit 707, and the code correction circuit 707 outputs an error. The output data of the correction circuit 1709 is directly output to the video decoder 1710 and the audio decoder 1712 without being corrected.
The data (corrected or uncorrected data) input in the video decoder 1710 and the audio decoder 1712 is decoded.

In the code correction circuit 707, the recording medium 1701
Based on the correction method described along with a plurality of address sections in the table of contents information recorded in, for example, the video signal is partially blurred or partially replaced with another video signal. The audio signal is modified by lowering the signal level or replacing it with another audio signal.

As described above, according to the present embodiment, the comparison search circuit 705 has a plurality of address sections including the start address and the end address in the table-of-contents information recorded in the recording medium 1701 in advance and each section. Address information of the storage circuit 702 storing a corresponding correction method,
The comparison with the current address in the additional information recorded on the recording medium is performed, and if the current address is included in any of the plurality of address sections, the code correction circuit 707 follows the corresponding address section. By correcting the output data of the error correction circuit 1709 based on the described correction method and outputting the corrected data to the video decoder 1710 and the audio decoder 1712, the video signal in the sexual scene or the violent scene, which is a problem in terms of expression, can be applied to the video signal. For example, it is possible to make a correction such as partially blurring or partially replacing it with another video signal, and lowering the signal level of the audio signal or replacing it with another audio signal. . Further, by providing the switch 706, it is possible to select whether to correct the video signal and the audio signal in the sexual scene or the violent scene according to the age of the viewer.

In this embodiment, the comparison / search circuit 70 is used.
Reference numeral 5 compares the current address with a predetermined one type of a plurality of address sections recorded in the recording medium 1701 in advance, and the current address is included in any of the plurality of address sections. In this case, the code correction circuit 707 corrects the output data of the error correction circuit 1709 based on the correction method described along with the corresponding address section and outputs it to the video decoder 1710 and the audio decoder 1712. There may be a plurality of types of sets of a plurality of address sections. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country. That is, the code of the country in which the signal reproduction device is placed is set in advance in the signal reproduction device, and the comparison search circuit 7
In 05, only a plurality of address sections corresponding to a predetermined country code may be selected and determined from a plurality of sets of a plurality of address sections.

In the present embodiment, the switch 706 is a changeover switch, but I using a code number or the like is used.
You may switch based on D. In other words, the viewer who knows the correct ID can turn off the switch 706, and the viewer who does not know the correct ID can watch with the switch 706 turned on. As a result, ratings such as age restrictions can be automatically, safely and easily realized by not giving the ID to those who are not suitable for viewing. It is also possible to eliminate the switch 706 and always compare the addresses.

A fifth embodiment of the present invention will be described below with reference to the drawings. FIG. 9 is a block diagram of the control circuit of the signal reproducing apparatus according to the fifth embodiment of the present invention.
The control circuit shown in FIG. 9 is provided in place of the conventional control circuit 1706.

The table-of-contents information for reading the table-of-contents information recorded in the recording medium 1701 included in the output data of the demodulation circuit 1708 and outputting the data of a plurality of address sections consisting of a pair of a start address and an end address in this table-of-contents information Reading circuit 901 and this table of contents information reading circuit 90
A storage circuit 902 for storing data of a plurality (N pairs) of address sections, each of which is composed of a pair of a start address and an end address, output from 1 and a demodulation circuit 1708.
Additional information reading circuit 903 for reading additional information included in the output data of
The address reading circuit 904 that extracts the current address from the output additional information of the switch 906 is connected to the switch 906, and the ON / OFF signal of the switch 906 and the current address extracted by the address reading circuit 904 and the address information in the storage circuit 902 are output. Comparison circuit 90 for outputting address
5 (details will be described later) and a servo control signal generation circuit 907 that generates a servo control signal for the rotation servo circuit 1704 and the optical pickup servo circuit 1705 based on the address output from the comparison circuit 905. .

As shown in FIG. 15, the memory circuit 902 stores N pairs of address sections each consisting of a pair of a start address and an end address in the table of contents information recorded on the recording medium 1701. The pointer points sequentially from the start address # 1 to the end address #N, and the start address #i
It is an index for repeating the operation of starting the reproduction from and ending the reproduction at the end address #i.

The operation of the comparison circuit 905 will be described with reference to the flowchart of FIG. First, it is confirmed whether or not the switch 906 is on (step-1001), and if it is on, the counter i is initialized to 1 (step-100
2), the start address #i is output, and the reproduction of the recording medium 1701 is started (step-1003). Then, the internal address of the additional information recorded in the recording medium 1701 is read from the output data of the demodulation circuit 1708 (step-
1004). Then, the read address is compared with the end address #i, and it is determined whether or not the address has reached the end address #i (step-1005).
When it is determined that the end address #i has been reached, the value of the counter i is incremented by 1 (step-100
6). Then, the value of the counter i is compared with the number N of address sections to determine whether the counter i has exceeded the final value N (step-1007). If the counter i has not yet exceeded the final value N, To return to step-1003, the reproduction of the i-th address section is continued. If the counter i exceeds the final value N, reproduction stop data is output (step-1008). On the other hand-
If it is determined in 1005 that the address has not reached the end address #i, the process returns to step -1004 to continue reproduction of the i-th address section. When the switch 906 is off in step-1001, an arbitrarily set address is output, reproduction of the recording medium 1701 is started (step-1009), and it is then determined whether reproduction is completed (step-1001). -1010), if the reproduction is not completed, the reproduction is continued, and if the reproduction is completed, Step-1
Proceed to 008 to stop the reproduction.

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, in the table-of-contents information reading circuit 901, the demodulation circuit 1708
The table-of-contents information recorded on the recording medium 1701 is read from the output data of 1., and a plurality of address sections including a pair of a start address and an end address of the table-of-contents information are stored in the memory circuit 902. Next, in the comparison circuit 905, when the switch 906 is on, first, the storage circuit 90
The first start address of the contents stored in 2 is output to the servo control signal generation circuit 907, and the reproduction is started from the first start address. Then, the additional information reading circuit 903 reads the additional information from the output data of the demodulation circuit 1708, and the address reading circuit 904 extracts the current address in this additional information.

Then, the comparison circuit 905 compares the current address in the additional information with the end address of the address section containing the current address stored in the storage circuit 902, and when the current address reaches the end address. Indicates that the next start address is the servo control signal generation circuit 9
The signal is output to the servo control signal generation circuit 907 and the servo control signal generation circuit 907 generates a signal for controlling the optical pickup servo circuit 1705 and the rotation servo circuit 1704 so as to reproduce from the next start address. When the switch 906 is off, the address reading circuit 90 in the comparison circuit 905.
It is possible to reproduce any address without comparing the address in the additional information recorded in the fourth recording medium 1701 with the address stored in the storage circuit 902.

As described above, according to the present embodiment, the comparison circuit 905 causes the recording medium 1701 to have a plurality of address sections each consisting of a pair of a start address and an end address recorded in the recording medium 1701 in advance, and the recording medium. 1701 is compared with the current address in the additional information recorded,
If the current address is included in the i-th section of the plurality of address sections, when the current address reaches the end address #i of the i-th address section, the start address # i + 1
Is output to the servo control signal generation circuit 907 to control so as to skip from the end address #i to the start address # i + 1, so that the viewer can obtain a plurality of address sections including a pair of the start address and the end address in the table of contents information. Only the viewer can view the contents, and the viewing restriction can be easily realized.

Further, the trailer can be created by joining the video / audio software of a plurality of address sections consisting of a pair of the start address and the end address, so that it is not necessary to record the video / audio software duplicated with the main program, and the recording of the present invention can be performed. The playback device allows the trailer to be played back without increasing redundancy.

Further, by providing the switch 906, it is possible to select whether or not to restrict viewing according to the viewer, and it is also possible to select whether to view the main part of the video / audio software or the trailer.

In the present embodiment, the comparison circuit 905 compares a predetermined one kind of a plurality of address sections of the table-of-contents information recorded in advance on the recording medium with the current address information to obtain a plurality of addresses. If the current address is included in the i-th section of the section, when the current address reaches the end address #i of the i-th address section,
The start address # i + 1 is set to the servo control signal generation circuit 907.
Then, the servo control signal generation circuit 907 performs control so as to skip from the end address #i to the start address # i + 1, but there may be a plurality of sets of a plurality of address sections. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country.
That is, the code of the country in which the signal reproduction device is placed is set in advance in the signal reproduction device, and the comparison search circuit 905 is set.
It suffices to select only a plurality of address sections corresponding to a predetermined country code from a plurality of sets of a plurality of address sections for determination.

In the present embodiment, the switch 906 is a changeover switch, but I using a password is used.
You may switch based on D. In other words, the viewer who knows the correct ID can turn off the switch 906, and the viewer who does not know the correct ID can watch with the switch 906 turned on. As a result, a viewer who does not know the ID can only view a plurality of address sections consisting of a pair of a start address and an end address in the table of contents information, and viewing restrictions can be automatically, safely and easily realized. It is also possible to omit the switch 906 and always enable only the reproduction according to the table of contents information.

In the present embodiment, it is assumed that the viewer can only view the video and audio signals of a plurality of address sections consisting of the start address and end address pairs in the table of contents information, but another audio signal is reproduced. May be. This makes it possible to avoid signal discontinuity, which is less of a problem with video signals but with audio signals. Also, by replacing the audio signal with another audio signal for parental control, fragmentary reproduction contents can be expressed completely, and can be reproduced as a trailer, for example.

A sixth embodiment of the present invention will be described below with reference to the drawings. FIG. 11 is a block diagram of the control circuit of the signal reproducing apparatus according to the sixth embodiment of the present invention.
The control circuit shown in FIG. 11 is provided in place of the conventional control circuit 1706.

Contents information and ID recorded in the recording medium 1701 included in the output data of the demodulation circuit 1708.
A table information information reading circuit 11 that reads information, outputs data in a plurality of address sections including a pair of a start address and an end address in the table of contents information, and outputs ID information.
01 and a pair of a start address and an end address output from the table of contents information reading circuit 1101 (N
(Data pair) address section data is stored as shown in FIG. 15, an additional information reading circuit 1103 for reading additional information included in the output data of the demodulation circuit 1708, and an output of this additional information reading circuit 1103. An address reading circuit 1104 that extracts the current address from the additional information is compared with the ID information output from the table-of-contents information reading circuit 1101 and the input ID input from the input ID terminal 1108. If they do not match, an ON signal, A match detection circuit 1106 that outputs an off signal when they match, an on / off signal of this match detection circuit 1106, an address that is output according to the current address extracted by the address reading circuit 1104, and address information in the storage circuit 1102. Comparing circuit 1105 (details will be described later) and comparing circuit 1 05 based on the address outputted from being formed from the servo control signal generation circuit 1107 for generating a servo control signal for rotating the servo circuit 1704 and the optical pickup servo circuit 1705.

The operation of the comparison circuit 1105 will be described with reference to the flowchart of FIG. First, the coincidence detection circuit 1
It is confirmed whether 106 is on (ID information does not match) (step 1201). If it is on, counter i is initialized to 1 (step 1202), start address #i is output, and recording is performed. The reproduction of the medium 1701 is started (step 1203). Then, the demodulation circuit 1708
The current address in the additional information recorded on the recording medium 1701 is read from the output data of the step (120).
4). Then, the read current address is compared with the end address #i, and it is determined whether the address has reached the end address #i (step-1205). When it is determined that the end address #i has been reached, the value of the counter i is incremented by 1 (step-120
6). Then, the value of the counter i is compared with the number N of address sections to determine whether or not the counter i has exceeded the final value N (step-1207). If the counter i has not yet exceeded the final value N, To return to step 1203, the reproduction of the i-th address section is continued. If the counter i exceeds the final value N, reproduction stop data is output (step-1208). On the other hand-
If it is determined in 1205 that the address has not reached the end address #i, the process returns to step 1204, and the reproduction of the i-th address section is continued.

In step 1201, when the output of the coincidence detection circuit 1106 is ON, the reproduction of the recording medium 1701 is started from an arbitrarily set address (step-1209), and then it is judged whether or not the reproduction is ended. (Step-1210). If the reproduction is not completed, the reproduction is continued. If the reproduction is completed, the process proceeds to step-1208 to stop the reproduction.

The operation of the control circuit of the signal reproducing apparatus configured as described above will be described below. First, the table-of-contents information reading circuit 1101 reads the table-of-contents information, and the storage circuit 1102 stores a plurality of address sections including a pair of a start address and an end address of the table-of-contents information. Next, the table of contents information reading circuit 1101 reads the ID information, and the coincidence detection circuit 1106 reads this I
D information and input ID input from the input ID terminal 1108
With the comparison circuit 1105.
Is turned on, and if they match, the comparison circuit 1105 is turned off.

The comparison circuit 1105 is the coincidence detection circuit 1
When 106 is turned on, the storage circuit 1102 is initially set.
The first start address of the contents stored in is output to the servo control signal generation circuit 1107, and the reproduction is started from the first start address. Then, the additional information reading circuit 1103 reads the additional information from the output data of the demodulation circuit 1708, and the address reading circuit 1104 extracts the current address in this additional information. And the comparison circuit 11
05 compares the current address in the additional information recorded on the recording medium 1701 with the end address of the address section containing the current address stored in the storage circuit 1102, and the current address reaches the end address. In this case, the next start address is output to the servo control signal generation circuit 1107, and the servo control signal generation circuit 1107 outputs a servo control signal for the optical pickup servo circuit and the rotary servo circuit so as to reproduce from the next start address. To do.

When the match detection circuit 1106 is off,
The comparison circuit 1105 can reproduce an arbitrary address without comparing the current address in the additional information with the address section stored in the storage circuit 1102.

As described above, according to the present embodiment, the coincidence detection circuit 1106 causes the input I from the input ID terminal 1108.
D is compared with the ID information recorded on the recording medium, and if they do not match, the comparison circuit 1105 determines that a plurality of address sections consisting of a pair of a start address and an end address in the table of contents information and the additional information. When the current address is included in the i-th section of the plurality of address sections by comparing with the current address, when the current address reaches the end address #i of the i-th address section, the start address # By outputting i + 1 to the servo control signal generation circuit 1107 and performing control so as to skip from the end address #i to the start address # i + 1, the viewer can obtain a plurality of pairs of start and end addresses in the table of contents information. Since only the address section can be viewed, viewing restrictions can be easily realized.

Further, the trailer can be created by joining the video / audio software of a plurality of address sections consisting of a pair of the start address and the end address, so that it is not necessary to record the video / audio software duplicated with the main part, and the present invention can be used. The trailer can be reproduced by the recording / reproducing device without increasing redundancy.

Further, the coincidence detection circuit 1106 has the input ID from the input ID terminal 1108 and the I recorded on the recording medium.
D circuit information is compared, and if they match, the comparison circuit 1
Reference numeral 105 makes it possible to reproduce an arbitrary address without comparing a plurality of address sections consisting of a start address and an end address in the table of contents information with the current address in the additional information. That is, the coincidence detection circuit 1106 determines whether or not the viewer knows the correct ID, and can select whether or not to restrict viewing according to the determination result. As a result, a viewer who knows the correct ID can view from any address, for example, the main part can be viewed, and a viewer who does not know the correct ID can select a plurality of addresses consisting of a start address and an end address in the table of contents information. Only the section can be viewed, for example, only the trailer can be viewed, and viewing restrictions can be automatically, safely and easily realized.

In this embodiment, the comparison circuit 1105
Compares the current address with a predetermined one type of a plurality of address sections recorded in the recording medium 1701 in advance, and when the current address is included in the i-th section of the plurality of address sections, When the current address reaches the end address #i of the i-th address section, the start address # i + 1 is set to the servo control signal generation circuit 1107.
Then, the servo control signal generation circuit 1107 performs control so as to skip from the end address #i to the start address # i + 1, but there may be a plurality of types of a plurality of address sections. As a result, it is possible to meet the judgment criteria for sexual scenes and violent scenes that differ from country to country. That is, the code of the country in which the signal reproducing device is placed is preset in the signal reproducing device, and the comparison circuit 110
In No. 5, only a plurality of address sections corresponding to a predetermined country code may be selected and determined from a plurality of sets of a plurality of address sections.

In the present embodiment, the input ID terminal 110
Although the input ID is input from 8 to the match detection circuit 1106, there is a method of inputting the ID to the input ID terminal 1108 directly from the signal reproducing device or a method of inputting the ID remotely by communication. . In the method of directly inputting the ID from the signal reproducing device, the viewing restriction can be easily released by notifying the viewer of the ID and then inputting the ID to the signal reproducing device by the viewer. In the method of remotely inputting the ID by communication, the ID is remotely sent to the signal reproducing device of the registered viewer by the communication means, so that the parental control can be safely realized.

In the present embodiment, it is assumed that the viewer can only view and listen to the video / audio signals of a plurality of address sections consisting of a pair of start address and end address in the table of contents information, but another audio signal can be reproduced. Is also good. This makes it possible to avoid signal discontinuity, which is less of a problem with video signals but with audio signals. Further, by replacing the audio signal with another audio signal for parental control, fragmentary reproduction contents can be expressed completely, and it is possible to reproduce as a trailer, for example.

In this embodiment, the ID information is recorded in advance in the index information area of the recording medium, but it may be recorded in the additional information area of the recording medium in advance. As a result, the ID information is recorded more frequently in the recording medium when the ID information is recorded in the additional information area than in the case where the ID information is recorded in the table of contents information area, and the reliability of parental control is improved. It will be.

[0077]

As described above, according to the first aspect of the present invention, the predetermined flag in the additional information recorded on the recording medium in advance is determined, and if the predetermined flag is on, the additional address is read from the current address. By controlling to skip to the jump destination address, it is possible to cut sexual scenes and violent scenes that are problematic in terms of expression, and by providing a switch, sex according to the age of the viewer You can choose whether to cut the target scene or the violence scene.

According to the second aspect of the invention, when performing the decoding process, the additional information recorded in advance on the recording medium is read, the predetermined flag of the additional information is determined, and the predetermined flag is turned on. If so, by modifying the demodulated data and decoding it, the video signal may be partially blurred or partially replaced with another video signal in a sexual scene or a violent scene that poses a problem in terms of expression. However, the audio signal can be modified by lowering the signal level or replacing it with another audio signal. Further, by providing a switch, it is possible to select whether to correct the video signal and the audio signal in the sexual scene or the violent scene according to the age of the viewer.

Further, according to the third invention, the table-of-contents information recorded in advance on the recording medium is read and a plurality of address sections consisting of a pair of the start address and the end address in the table-of-contents are stored, and then the additional information is recorded. The current address is read, this current address is compared with the stored multiple address sections, and if the current address is included in any of the multiple address sections, the corresponding address section ends from that current address. By controlling to skip to the address, it is possible to cut sexual scenes and violent scenes that are problematic in terms of expression. Further, by providing a switch, it is possible to select whether to cut the sexual scene or the violent scene according to the age of the viewer.

According to the fourth aspect of the invention, when the decoding process is performed, the table-of-contents information recorded in advance on the recording medium is read, and a plurality of address sections consisting of a pair of a start address and an end address are stored therein, Next, the current address in the additional information is read, and if the current address is included in any of the multiple address sections, correction is made to the demodulated data, so that the sexual scene or the violent scene that poses a problem in expression. Modifications such as partially blurring the video signal or partially replacing it with another video signal, and lowering the signal level for the audio signal or replacing it with another audio signal Can be given. Further, by providing a switch, it is possible to select whether to correct the video signal and the audio signal in the sexual scene or the violent scene according to the age of the viewer.

Further, according to the fifth aspect of the invention, the table-of-contents information recorded in advance on the recording medium is read and a plurality of address sections consisting of a pair of a start address and an end address therein are stored, and the stored plurality of address sections are stored. By repeating the playback of the address section by specifying the address of, the viewer can only view a plurality of address sections that consist of a pair of the start address and the end address in the table of contents information, and it is easy to restrict viewing. realizable. In addition, a trailer can be created by splicing together video / audio software in a plurality of address sections consisting of a pair of start address and end address, so that it is not necessary to record video / audio software overlapping with the main part, and the present invention provides redundancy. You can play the trailer without giving too much. Further, by providing a switch, it is possible to select whether or not to restrict viewing according to the viewer, and whether to view the main part of the audiovisual software or the trailer.

According to the sixth aspect of the invention, the ID information recorded in advance on the recording medium is compared with the input ID information input, and if they do not match, the contents recorded in advance on the recording medium. The viewer reads the information, stores a plurality of address sections consisting of a pair of start and end addresses, specifies the addresses of the stored plurality of address sections, and repeats the reproduction of the address sections. Only a plurality of address sections consisting of a pair of a start address and an end address in the table of contents information can be viewed, so that viewing restriction can be easily realized. In addition, a trailer can be created by splicing together video / audio software in a plurality of address sections consisting of a pair of start address and end address, so that it is not necessary to record video / audio software overlapping with the main part, and the present invention provides redundancy. You can play the trailer without giving too much. If the ID information matches, any address can be played back without comparing the plurality of address sections with the current address, that is, if the viewer knows the correct ID, watch the main part. However, if the user does not know the correct ID, he / she will only be able to watch the predetermined address section, and only the trailer can be watched, and the viewing restriction can be automatically, safely and easily realized.

[Brief description of drawings]

FIG. 1 is a configuration diagram of essential parts of a signal reproducing device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of a determination control circuit of the signal reproducing apparatus.

FIG. 3 is a configuration diagram of a main part of a signal reproducing device according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of a determination circuit of the signal reproducing apparatus.

FIG. 5 is a configuration diagram of main parts of a signal reproducing device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of a comparison search circuit of the signal reproducing apparatus.

FIG. 7 is a configuration diagram of main parts of a signal reproducing device according to a fourth embodiment of the present invention.

FIG. 8 is a flowchart showing an operation of a comparison search circuit of the signal reproducing apparatus.

FIG. 9 is a main part configuration diagram of a signal reproducing device according to a fifth embodiment of the present invention.

FIG. 10 is a flowchart showing an operation of a comparison circuit of the signal reproduction device.

FIG. 11 is a configuration diagram of a main part of a signal reproducing device according to a sixth embodiment of the present invention.

FIG. 12 is a flowchart showing an operation of a comparison circuit of the signal reproduction device.

FIG. 13 is a diagram showing a plurality of address sections each consisting of a pair of a start address and an end address in the table of contents information recorded on a recording medium.

FIG. 14 is a diagram showing a plurality of address sections including a set of a start address, an end address, and a correction method in the table of contents information recorded on a recording medium.

FIG. 15 is a diagram showing a plurality of address sections each including a pair of a start address and an end address in the table of contents information recorded on a recording medium.

[Fig. 16] Fig. 16 is a flowchart from creation to reproduction of conventional audiovisual software.

FIG. 17 is a configuration diagram of a conventional signal reproduction device.

[Explanation of symbols]

101, 301, 503, 703, 903, 1103
Additional information reading circuit 102 Judgment control circuit 103, 303, 506, 706, 906 Switch 104, 507, 907, 1107 Servo control signal generation circuit 302 Judgment circuit 304, 707 Code correction circuit 501, 701, 901, 1101 Contents information reading circuit 502, 702, 902, 1102 Storage circuit 504, 704, 904, 1104 Address reading circuit 505, 705 Comparison search circuit 905, 1105 Comparison circuit 1106 Match detection circuit 1108 Input ID terminal 1701 Disk (recording medium) 1702 Spindle motor 1703 Optical pickup 1704 Rotation servo circuit 1705 Optical pickup servo circuit 1706 Control circuit 1707 Waveform shaping circuit 1708 Demodulation circuit 1709 Error correction circuit 1710 Video decoder 17 1 video DA converter 1712 the audio decoder 1713 audio DA converter

Claims (12)

[Claims] 1. A signal reproducing method for reading and demodulating data recorded on a recording medium from a specified address, decoding the demodulated data, and outputting at least one of a video signal and an audio signal. The additional information included in the demodulated data is read, and then a predetermined flag in the additional information is determined. If the predetermined flag is off, reproduction is continued, and if the predetermined flag is on, skip in the additional information. A signal reproduction method characterized by performing reproduction by jumping to a destination address. 2. Output data of the demodulation circuit, comprising servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. Is a signal reproducing device that outputs at least one of a video signal and an audio signal by performing the decoding process of (1), determines a predetermined flag in the additional information included in the output data of the demodulation circuit, and turns on the predetermined flag. In that case, the determination control circuit that outputs the jump destination address in the additional information and the servo control signal generation circuit that generates the control signal of the servo of the reading unit based on the jump destination address output from the determination control circuit are provided. A signal reproducing device characterized in that 3. A signal reproducing method for reading data recorded on a recording medium from a designated address, demodulating the data, decoding the demodulated data, and outputting at least one of a video signal and an audio signal. When performing the decoding process, the additional information included in the demodulated data is read, then a predetermined flag in the additional information is determined, and if the predetermined flag is off, the demodulated data is decoded as it is and the predetermined flag is determined. If is turned on, the signal reproduction method is characterized in that the demodulated data is modified and then decoded. 4. A signal reproducing device comprising a servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. A determination circuit that determines whether a predetermined flag in the additional information included in the output data of the demodulation circuit is ON or OFF; and if the determination circuit determines that the predetermined flag is ON, Modify the output data and output it,
A code correction circuit that outputs the output data of the demodulation circuit without correction when the determination circuit determines that the predetermined flag is off, and a decoding circuit that performs a decoding process of the output data of the code correction circuit A signal reproducing device which outputs at least one of a video signal and an audio signal. 5. A signal reproducing method for reading and demodulating data recorded on a recording medium from a specified address, decoding the demodulated data, and outputting at least one of a video signal and an audio signal. The table of contents information included in the demodulated data is read and a plurality of address sections composed of a pair of a start address and an end address therein are stored, then the current address in the additional information included in the demodulated data is read, and this current address is read. When the current address is included in any of the plurality of address sections, the program jumps to the end address of the address section that includes the current address and starts playback. If the current address is not included in any of the multiple address sections, repeat the process to continue playback. Signal reproducing method for the butterflies. 6. An output data of the demodulation circuit, comprising servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. Is a signal reproducing apparatus that performs at least one of a video signal and an audio signal by performing the decoding process of (1), and includes a plurality of address sections including a pair of a start address and an end address in the table of contents information included in the output data of the demodulation circuit. And a current address in the additional information included in the output data of the demodulation circuit and the address information of the memory circuit are compared, and the current address is included in any of the plurality of address sections. In this case, a comparison search circuit that outputs the end address of the corresponding address section and an output from the comparison search circuit. Signal reproducing apparatus characterized by comprising a servo control signal generating circuit for generating a servo control signal from the reading means based on the end address. 7. A signal reproducing method for reading data recorded on a recording medium from a designated address, demodulating the data, decoding the demodulated data, and outputting at least one of a video signal and an audio signal, When the decoding process is performed, the table-of-contents information included in the demodulated data is read, a plurality of address sections including a pair of a start address and an end address in the table of contents are stored, and then the current information in the additional information included in the demodulated data is stored. Read the address and modify the demodulation data if the current address is included in any of the multiple address intervals, or demodulate if the current address is not included in any of the multiple address intervals. Signal reproduction characterized by performing decoding processing of demodulated data that is modified or not modified at the end without modifying the data Law. 8. A signal reproducing apparatus comprising a servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. A storage circuit for storing a plurality of address sections formed of a pair of a start address and an end address in the table of contents information included in the output data of the demodulation circuit; and a current address in the additional information included in the output data of the demodulation circuit, The address information of the memory circuit is compared, and if any of the plurality of address sections includes the current address, a signal with correction is output, and the current address is output to any of the plurality of address sections. If the comparison search circuit that outputs an uncorrected signal when not including, and a signal with a correction is input from the comparison search circuit, A code correction circuit that outputs the output data of the demodulation circuit after correction and outputs an uncorrected signal from the comparison search circuit, and outputs the output data of the demodulation circuit without correction, and the output of the code correction circuit. A signal reproducing device comprising: a decoding circuit that performs a data decoding process, and outputs at least one of a video signal and an audio signal. 9. A signal reproducing method for reading and demodulating data recorded on a recording medium from a specified address, decoding the demodulated data, and outputting at least one of a video signal and an audio signal. The table of contents information included in the demodulated data is read, a plurality of address sections consisting of a pair of start address and end address therein are stored, addresses of the stored plurality of address sections are designated, and reproduction of the address section is repeated. A method for reproducing a signal, which is characterized in that 10. Output data of the demodulation circuit, comprising servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. Is a signal reproducing apparatus that performs at least one of a video signal and an audio signal by performing the decoding process of (1), and includes a plurality of address sections including a pair of a start address and an end address in the table of contents information included in the output data of the demodulation circuit. A memory circuit for storing the first address of the address section stored in the memory circuit, and thereafter, the current address in the additional information included in the output data of the demodulation circuit and the memory circuit. Is compared with the end address of the address section that includes the current address stored in When the end address is reached, a comparison circuit that outputs the next start address and a servo control signal generation circuit that generates a control signal for the servo of the reading unit based on the address output from the comparison circuit are provided. A signal reproducing device characterized in that 11. A signal reproduction method for reading and demodulating data recorded on a recording medium from a designated address, decoding the demodulated data, and outputting at least one of a video signal and an audio signal, ID information included in the demodulated data and the input I input
D information is compared, and if they do not match, the table of contents information included in the demodulated data is read and a plurality of address sections consisting of a pair of the start address and the end address are stored therein, and the plurality of stored addresses are stored. A signal reproducing method characterized in that an address of a section is designated and reproduction of an address section is repeated. 12. The output data of the demodulation circuit, comprising servo drive reading means for reading data recorded on a recording medium from a designated address, and a demodulation circuit for demodulating the data read by the reading means. Is a signal reproducing apparatus for performing at least one of a video signal and an audio signal by performing the decoding process of the above, and is a coincidence detection circuit for comparing ID information included in output data of the demodulation circuit with input input ID information. And a storage circuit that stores a plurality of address sections formed of a pair of a start address and an end address in the table of contents information included in the output data of the demodulation circuit, and the match detection circuit does not match the ID information and the input ID information. If it is determined that the first start address of the address section stored in the storage circuit is first output,
After that, the current address in the additional information included in the output data of the demodulation circuit is compared with the end address of the address section containing the current address stored in the storage circuit, and the current address reaches the end address. In this case, a comparison circuit that outputs the next start address and a servo control signal generation circuit that generates a servo control signal of the reading unit based on the address output from the comparison circuit are provided. Signal reproduction device.