JP2850881B2 - Optical disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk reproducing apparatus, and more particularly, to an optical disk reproducing apparatus on which video and audio are recorded.

[0002]

2. Description of the Related Art Unlike a tape medium, an optical disk has a drawback that if reproduction is interrupted and the disk is removed, it is impossible to continue reproduction from the continuation of the disk. In order to avoid this, as a conventional technique, it has been considered to store disc identification data and a reproduction interruption address at the time of interruption and continue reproduction from this address when resuming.

A conventional known example is disclosed in JP-A-63-586.
No. 56 is known.

This conventional optical disk reproducing apparatus stores physical attribute information of a recording disk storing video information being reproduced and video information being reproduced in response to a storage command issued during a reproducing operation. Means for storing in the memory address information corresponding to the recorded recording position, means for determining whether the physical attribute information and the address information are stored in the memory in response to the final screen reproduction command, and Means for comparing the physical attribute information of the recording disk with the physical information stored in the memory, and means for starting the reproducing operation from the recording position corresponding to the address information written in the memory. .

[0005]

A first problem is that, when a plurality of persons play and interrupt the same disk, the reproduction can be resumed only from the interruption address of the person who operated last.

[0006] The reason for this is that, because the person who performed the operation cannot be identified, the interruption address information of the previously operated person is overwritten and erased by the reproduction interruption address data of the next operated person.

[0007]

(1) The optical disk reproducing apparatus of the present invention writes the disk identification data, the operator identification data, and the reproduction interruption address data to the flash memory when the reproduction of the disk is interrupted, and performs the continuous reproduction. At present
Disc identification data and operation of the loaded disc
It is characterized by having a function of reproducing from the place where the operator interrupted by comparing the user identification data with the data written in the flash memory . (2) The optical disc reproducing apparatus according to the present invention comprises: disc identification data indicating a physical attribute for identifying a mounted optical disc; and an operator for identifying a person who has interrupted reproduction of the optical disc identified by the disc identification data. Means for storing identification data, reproduction interruption address data when reproduction of the optical disk identified by the disk identification data is interrupted by the operator identified by the operator identification data, and a disk of the currently mounted disk identification
Data and operator identification data and data stored in the storage means.
And reproducing means for continuing reproduction from the reproduction interruption position by collating the data with the reproduction data. (3) The optical disk reproducing apparatus of the present invention is characterized in that a switch is provided in the optical disk reproducing apparatus main body of the above item (2), and the operator is identified by the switch. (4) In the optical disk reproducing apparatus of the present invention, one remote controller having a changeover switch is provided in the optical disk reproducing apparatus main body of the above item (2), and an operator changes the remote control code to be transmitted by switching the switch. Is used to identify the operator. (5) In the optical disc reproducing apparatus of the present invention, a remote controller in which different remote control codes are assigned to the same function key is provided in the optical disc reproducing apparatus main body of the above item (2), and the remote controller corresponding to the operator is provided. It is characterized in that the operator is identified by changing the remote control code to be operated and transmitted.

[0008]

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of an optical disk reproducing apparatus according to the present invention.
FIG. 2 is a front view showing a second embodiment of the optical disk reproducing apparatus of the present invention, and FIG. 3 is a front view showing a third embodiment of the optical disk reproducing apparatus of the present invention. FIG. 4 is a block diagram showing the structure of an embodiment of the optical disk reproducing apparatus of the present invention.

In FIG. 4, a disk B1 is rotated by a spindle motor B2 during reproduction. The rotation of this motor is controlled by a servo control circuit B5. The recording signal recorded on the disk B1 is reproduced by an optical pickup B3, amplified by a preamplifier B4, and then demodulated and error-corrected by a decoder B8 using a decoding RAM B9 as a work area. The demodulated data contains the information of the address of the disc currently being reproduced, and the system controller B7
By reading this data, the user can grasp the current playback position. Further, when the demodulated signal is a composite signal of video and audio, the video signal and the audio signal are separated by the decoder B8, and when the signal is a compressed signal, the signal of the signal is decoded by the decoder B8. Elongation is performed.

Next, the demodulated, separated and expanded digital video signal is converted into an analog video signal (NETC, PAL, SECAM, etc.) by a video D / A converter B14 and output to the outside of the apparatus by a video output terminal B16. Is done. Similarly, the digital audio signal is converted into an analog audio signal by the audio D / A converter B15, and is output to the outside of the device by the audio output terminal B17.

The system controller B7 discriminates input signals from the changeover switch B11, the key input device B12, and the remote control code receiving section B13, and shifts the optical disc reproducing apparatus to an operation mode corresponding to the signal.
Also, the current operation mode, the current reproduction time, and the like are displayed on the display device B10.

A compact disc (CD) has a TOC (Table of Content) at the innermost periphery of the disc.
s). This is information on the number of songs on the disc, the total recording time of all songs, and the recording time of each song. Since the information is unique for each disc, the disc can be identified by comparing this data. Furthermore, if the disc conforms to the ISO9660 format such as a CD-ROM or a DVD, the address (1
0h) to PVD (Primary Volume Di)
descriptor), and the disc identification accuracy can be improved.

In the present invention, these TOC data and PVD data are treated as disk identification data for identifying a disk.

When performing the reproduction stop processing, the system controller B7 stores the disc identification data such as the TOC and PVD read from the decoder B8, the current disc reproduction interruption address data, and the operator identification data in the flash memory B6. Write. At the time of the continuous reproduction processing, if the disc identification data of the currently inserted disc and the identification data of the operator who issued the continuous reproduction processing signal are stored in the flash memory B6, they are stored together with the data. The reproduction interruption address data is read, and reproduction processing from that address is performed.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

The following description shows an example in which three operators A, B, C operate.

First, a first embodiment will be described.

In FIG. 1, the optical disk reproducing apparatus has an operator changeover switch 3 for specifying an operator in a main body. Before operating the device, the operator switches the operator changeover switch 3 to his / her own position and then starts the operation.

FIGS. 11, 12 and 13 are flow charts for explaining this processing. When there is a key input, the current operation mode is checked first (S1, S2).
At this time, if the optical disk is being reproduced or stopped, the pressed key is confirmed (S3, S4, S5). When the key is one of the Stop key 5, the Power key 2, and the Eject key 8, the reproduction interruption processing is performed (S1).
0). In the case of other keys, a process corresponding to each remote control code is performed (S11). In the reproduction interruption processing, the disc identification data and the operator switch 3
Is stored in the flash memory as operator identification data (S13, S14), and a reproduction interruption address is stored as data accompanying the position data (S15).
Next, a disk stop process is performed (S16).

On the other hand, if neither S1 nor S2 is being played or stopped, the current operation mode is further confirmed, and the operation is stopped, the power is turned on, and the disc is turned on. If the pressed key is the Continue (continuous playback) key 4 (S6, S7, S8, S
9), a continuous reproduction process is performed (S12).

In the continuous reproduction process, the disk identification data of the currently mounted disk, the operator identification data based on the current position of the operator changeover switch, the disk identification data stored in the flash memory, and the operator identification data Is searched for a match (S17, S17)
18) When both of them match, the reproduction interruption address data associated therewith is read out, and reproduction processing from that address is performed (S19). If the matching disc identification data and operator identification data cannot be retrieved in S17 and S18, a reproduction process from the beginning of the disc is performed (S2).
0).

Next, a second embodiment will be described.

In FIG. 2, a remote controller for remotely controlling the main body has an operator changeover switch 29 for specifying an operator. The operator starts the operation after switching the operator switch 29 of the remote controller to his / her position. The remote controller transmits a different remote control code even when the same remote controller key is pressed depending on the position of the operator changeover switch 29.

Next, a specific example of how the remote control code to be transmitted is changed depending on the position of the operator changeover switch will be described. FIG. 6 shows a format of a general remote control code. Generally, a custom code represents a model, and a data code represents a function.

FIG. 7 shows a first example in which a custom code is changed according to the position of an operator changeover switch. At this time, the data code is shared by the remote controller keys. In the case of this example, the custom code 00h
Can be identified as A when A is received, B when 01h is received, and C when 02h is received.

FIG. 8 shows a second example in which the data code is changed according to the position of the operator changeover switch. At this time, the custom code is common. In the case of this example, A receives data 03h on the main body side, B receives data 13h,
When 3h is received, it can be determined that C is the operator and the Stop key is pressed.

FIG. 9 shows a third example in which the remote control code format is extended to add an operator identification code. The operator identification code is changed according to the position of the operator changeover switch as shown in FIG. In the case of this example, when data 0h is received on the main body side, it is possible to identify that C is the operator when A, 1h is received, and when 2h is received, C is the operator.

Next, the configuration of the remote controller will be described. FIG. 5 is a block diagram of the remote controller. When a key is input from the key input device B33,
The controller B31 reads the position of the operator changeover switch of the changeover switch input B32, sends a corresponding remote control code to the transmitter B30, and transmits the remote control code.

On the optical disk reproducing apparatus main body side, the received remote control code indicates the position of the operator changeover switch of the remote controller, that is, who is the operator.

FIGS. 14, 15 and 16 are flow charts for explaining the remote control code reception processing on the main body side. When a remote control code is input, the current operation mode is checked first (S3).
1, S32). At this time, if the optical disc is being reproduced or stopped, the remote control code is confirmed (S33, S34, S35). When the code is any of the Stop code, the Power code, and the Eject code, the reproduction interruption processing is performed (S40). If it is any other remote control code, a process corresponding to each remote control code is performed (S41).
In the reproduction interruption processing, the disc identification data and the remote control code are stored in the flash memory as operator identification data (S43, S44), and further, the reproduction interruption address is stored as accompanying data (S4).
5). Next, a disk stop process is performed (S46).

On the other hand, if it is determined in steps S31 and S32 that neither the reproduction nor the stop is performed, the current operation mode is further confirmed.
If the remote control code is a continuation code (Continue) while the system is stopped, the power is on, and the disk is on (S36, S3)
7, S38, S39), and a continuous reproduction process is performed (S4).
2).

In the continuous reproduction process, the disc identification data of the currently mounted disc, the operator identification data based on the received remote control code, and the disc identification data and the operator identification data stored in the flash memory. A search is made for a match (S4
7, S48), and when they match, the associated reproduction interruption address data is read, and reproduction processing from that address is performed (S49). If the disc identification data and the operator identification data that match in S47 and S48 cannot be retrieved, the reproduction processing from the beginning of the disc is performed (S50).

Next, a third embodiment will be described.

In FIG. 3, the optical disk device includes a plurality of remote controllers A49 and remote controllers B5.
9. Operated by the remote controller C69, and each remote controller is assigned a different remote control code to a key having the same function in order to identify the operator. For example, remote controller A
49 transmits the same remote control code as when the operator changeover switch on the remote controller in the second embodiment is at the position A, and similarly, the remote controller B has the operator changeover switch B and the remote controller C Transmits the same remote control code as when the operator changeover switch is at the C position.

The operator A operates a remote controller A49.
By using the remote controller B59 for the operator B and the remote controller C69 for the operator C, the main body can identify who is the operator. The remote controller receiving procedure of the optical disk reproducing apparatus main body is exactly the same as that of the second embodiment.

[0037]

As described above, the optical disc reproducing apparatus according to the present invention can resume reproduction from the place where the operating person has interrupted even when a plurality of persons operate one optical disc reproducing apparatus. I have.

The reason is that data for identifying an operator when reproduction is interrupted is stored.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of an optical disk reproducing apparatus according to the present invention.

FIG. 2 is a front view showing a second embodiment of the optical disk reproducing apparatus of the present invention.

FIG. 3 is a front view showing a third embodiment of the optical disc reproducing apparatus of the present invention.

FIG. 4 is a block diagram showing a structure of an embodiment of an optical disk reproducing apparatus according to the present invention.

FIG. 5 is a block diagram showing a structure of a remote controller of the optical disc reproducing device of FIG.

FIG. 6 is a diagram showing a general remote control code format.

FIG. 7 is a diagram showing an example of a custom code by an operator changeover switch of the optical disc reproducing device of FIG. 4;

8 is a diagram showing an example of a data code by an operator changeover switch of the optical disc reproducing device of FIG.

9 is a diagram showing a remote control code format obtained by expanding an operator identification code of the optical disc reproducing apparatus of FIG. 4;

10 is a diagram showing an example of an operator identification code by an operator changeover switch on a remote controller of the optical disc reproducing device of FIG. 4;

FIG. 11 is a flowchart illustrating a key input process according to the first embodiment;

FIG. 12 is a flowchart for explaining a reproduction interruption process in FIG. 11;

FIG. 13 is a flowchart illustrating a continuous reproduction process in FIG. 11;

FIG. 14 is a flowchart illustrating a remote control code reception process according to the second and third embodiments.

FIG. 15 is a flowchart for explaining a reproduction interruption process in FIG. 14;

FIG. 16 is a flowchart illustrating a continuous reproduction process in FIG. 14;

[Explanation of symbols]

 2 Power key 3 Operator changeover switch 4 Continue (continuous playback) key 5 Stop key 8 Eject key 29 Operator changeover switch 49 Remote controller A 59 Remote controller B 69 Remote controller C B1 Disk B2 Spindle motor B3 Optical pickup B4 Preamplifier B5 Servo Control circuit B6 Flash memory B7 System controller B8 Decoder B9 Decoding RAM B10 Display device B11 Switch input B12 Key input device B13 Remote control code receiver B14 Video D / A converter B15 Audio D / A converter B16 Video output terminal B17 Audio output terminal B30 Transmitter B31 Controller B32 Changeover switch input B33 Key input device

Claims (5)

(57) [Claims] 1. A time of interrupting the disc playback, writes the disk identification data and handling identification data and playback interrupt address data to the flash memory, the current instrumentation during continuous reproduction
The disc identification data of the disc being loaded; and
Write to the operator identification data and the flash memory
An optical disc reproducing apparatus having a function of reproducing data from a place interrupted by an operator by collating the data with the reproduced data. 2. Disc identification data indicating a physical attribute for identifying a mounted optical disc, operator identification data for identifying a person who interrupted reproduction of the optical disc identified by the disc identification data, means for storing a playback interrupt address data at the time of the playback interrupt by the operator identified by the identified optical disk the operator identification data are identification data, the currently mounted
The disc identification data of the disc being
User identification data and the data stored in the storage means.
An optical disc reproducing apparatus, comprising: reproducing means for performing continuous reproduction from a reproduction interrupted position by combining them . 3. The optical disk reproducing apparatus according to claim 2, wherein a switch is provided in the optical disk reproducing apparatus main body, and an operator is identified by the switch. 4. A remote controller having a changeover switch is provided in the main body of the optical disc reproducing apparatus, and the operator is identified by switching the switch and changing a remote control code to be transmitted. 3. The optical disk reproducing apparatus according to claim 2, wherein: 5. A remote controller in which different remote control codes are assigned to the same function key in the main body of the optical disc reproducing apparatus, and an operator operates a remote controller corresponding to the operator to change a remote control code to be transmitted. 3. The optical disc reproducing apparatus according to claim 2, wherein the operator is identified by: