JP4710665B2 - DVD playback device - Google Patents

Description

  The present invention relates to a DVD playback apparatus.

In a DVD playback apparatus that plays back a DVD of the VIDEO standard, the presence / absence of subtitles and the subtitle language can be switched based on a switch signal from a subtitle switch key on the remote control or the main body (see, for example, Patent Document 1). ).
Incidentally, the read-only type of audio DVD includes the DVD AUDIO standard in addition to the above-mentioned DVD VIDEO standard. Recent DVD playback apparatuses can play back DVDs of any standard.

In such a DVD playback device, if a dedicated operation key is provided for each standard, the operation key becomes unstable. Therefore, for the same operation content, the operation key is unified, We are trying to reduce it.
Here, the same operation content is, for example, an operation content that is used in the same manner in both standard DVDs, although the target is different for music and video, such as playback, pause, fast forward, fast reverse, and stop. .

Furthermore, for operation contents related to both standards even if they are not the same operation contents, the operation input screen (OSD: On Screen Display) is displayed on the screen by operating a predetermined operation key. You can now perform the operations you have performed.
The related operation content is an operation content that does not completely match between the DVDs of both standards but has similar operation purposes. For example, the operation content related to subtitle switching in the DVD VIDEO standard and still image switching in the DVD AUDIO standard can be cited. These switching operations are to switch each item as the purpose of the operation, whereas the subtitle switching can be switched cyclically, whereas the still image switching is not only the cyclic switching but also to the home position. Is different in that it is necessary to switch back. That is, since it is possible to perform cyclic switching when subtitles are switched, only one operation item called forward operation is sufficient, and when still images are switched, there are three operations: forward operation, backward operation, and home position return operation. Operation items are required.

  Hereinafter, an operation using the operation input screen will be described with reference to FIG. FIG. 3 is a flowchart when the operation input screen is used. Before using the operation input screen, it is recognized which standard the DVD in the DVD playback device is.

  First, in step S101, the control unit of the DVD playback device determines whether or not a display instruction is input from an operation key for displaying an operation input screen. If yes, the process proceeds to step S102.

  In step S102, the control unit determines whether the DVD standard in the apparatus is the DVD VIDEO standard or the DVD AUDIO standard. If the standard is the DVD VIDEO standard, the process proceeds to step S103. If the standard is the DVD AUDIO standard, the step is performed. The process proceeds to S105.

In step S103, the control unit displays an operation input screen for subtitle switching. In this case, the presence / absence of subtitles and the subtitle language can be selected by a forward operation.
In step S104, the control unit determines display of the selected subtitle and ends the operation input screen display.

In step S105, the control unit displays an operation input screen for switching still images. In this case, each still image can be selected by a forward feed operation, a reverse feed operation, and a home position operation.
In step S106, the control unit determines display of the selected still image and ends the operation input screen display.
As described above, the operation contents related to both standards can be executed on the operation input screen.
JP 2000-331464 A

  However, if there are operations related to both standards that can be performed with only one operation item, such as the above caption switching, it is bothersome for the user to display the operation input screen for each operation. It was a factor that made me feel that.

  An object of the present invention is to improve operation efficiency by reducing operations using an operation input screen even in a DVD reproducing apparatus capable of reproducing DVDs of different standards.

The DVD playback apparatus according to the invention of claim 1
A reading unit that individually reads optical recording media of different standards;
An input unit for inputting various instructions;
A reproduction unit that creates reproduction data based on data in the optical recording medium read by the reading unit;
An output unit for outputting the reproduction data created by the reproduction unit to an external device capable of displaying an image;
A controller for recognizing the standard of the optical recording medium read by the reading unit and controlling the reproduction unit so that reproduction is performed based on various instructions input to the input unit;
The various instructions include a plurality of operation contents related to each of the optical recording media having different standards.
Of the plurality of related operation details, one operation content consists of one item operation, and the other operation content consists of multiple item operations.
The controller is
When the operation content corresponding to the standard of the optical recording medium being reproduced is the one operation content, the instruction from the input unit is directly reflected in the reproduction data as the operation of the one item. And controlling the playback unit,
When the operation content corresponding to the standard of the optical recording medium being reproduced is the other operation content, an operation input screen capable of selecting the multiple items in the other operation content is displayed. The reproduction unit is controlled to change the reproduction data.

According to a second aspect of the present invention, in the DVD playback apparatus according to the first aspect,
The one operation content is subtitle switching corresponding to the VIDEO standard of the optical recording medium,
The other operation content is still image switching corresponding to the AUDIO standard of the optical recording medium.

  According to the present invention, when the operation content corresponding to the standard of the optical recording medium being reproduced is one operation content, the instruction from the input unit is directly reflected in the reproduction data as one item operation. In the case of other operation contents, an operation input screen capable of selecting multiple items in the other operation contents is displayed. Therefore, when inputting one operation content, the operation input screen is not displayed. Both operations can be executed. That is, even with a DVD playback apparatus that can play back optical recording media of different standards, operations using the operation input screen can be reduced, and as a result, operation efficiency is improved.

  In particular, it is suitable when the subtitle switching corresponding to the VIDEO standard of the optical recording medium is one operation content and the still image switching corresponding to the AUDIO standard of the optical recording medium is other operation content.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of the DVD playback apparatus 1 of the present embodiment. As shown in FIG. 1, the DVD playback apparatus 1 includes a reading unit 3 that individually reads optical recording media 2 having different standards, an input unit 4 that inputs various instructions, and an optical that is read by the reading unit 3. The reproduction unit 5 that creates reproduction data based on the data in the recording medium 2, the output unit 7 that outputs the reproduction data created by the reproduction unit 5 to an external device 6 that can display an image, and the reading unit 3 A control unit 8 that recognizes the standard of the optical recording medium 2 and controls the playback unit 5 so that playback is performed based on various instructions input to the input unit 4 is provided.

  Examples of the optical recording medium 2 having different standards include a DVD of the DVD VIDEO standard, a CD of the SUPER VIDEO standard, and a DVD of the DVD AUDIO standard.

  The reading unit 3 receives a spindle motor 31 for rotating the optical recording medium 2, a spindle servo control unit 32 for controlling the spindle motor 31, and data in the optical recording medium 2 rotated by the spindle motor 31. The pickup 33 to be read, the servo control unit 34 for adjusting the focus, tracking, and thread of the pickup 33 and the analog signal output from the pickup 33 by reading the data in the optical recording medium 2 are processed. Accordingly, a signal generation circuit 35 for extracting an RF signal, a tracking error signal (TE), a focus error signal (FE), and the like is provided.

  The input unit 4 includes operation keys provided on a DVD playback apparatus main body (not shown) and operation keys provided on a remote controller. The various instructions input from the input unit 4 include instructions (for example, playback, pause, fast forward, fast reverse, stop, etc.) consisting of the same operation contents with respect to the optical recording medium 2 of each standard, Instructions including a plurality of operation contents related to the standard (for example, subtitle switching in the DVD VIDEO standard or SUPER VIDEO standard and still image switching in the DVD AUDIO standard) are included.

  Here, out of a plurality of related operation contents, one operation content consists of one item operation, and the other operation contents consist of multi-item operation. More specifically, an operation of one item is an operation in which one selection item is selected when one instruction is executed. For example, in the case of a cyclic switching operation such as subtitle switching, since there is only one selection item, it is only necessary to press the operation key once. By repeating this, the subtitle language and subtitle presence / absence can be switched in order. It is possible to switch.

On the other hand, the multi-item operation is an operation in which two or more selection items are selected when one instruction is executed. For example, when three selection items such as forward operation, reverse operation, and home position return operation such as still image switching are necessary, there are a selection operation for selecting any item and an execution operation. Each operation is executed by pressing the key multiple times.
These operation keys to which one operation content and other operation details are input are also used as one operation key. Hereinafter, this operation key is referred to as a dual-purpose key.

  The reproduction unit 5 is electrically connected to the signal generation circuit 35, the spindle servo control unit 32, and the servo control unit 34. The reproducing unit 5 is provided with a phase compensation circuit 51 for compensating the phase of the pickup 33 based on the FE signal and the TE signal input from the signal generation circuit 35. The phase compensation circuit 51 compensates the phase. The controlled signal is fed back to the servo control unit 34. In addition, the reproduction unit 5 is provided with a PLL circuit 52 that matches the frequency of the RF signal or reference frequency input from the signal generation circuit 35 with the frequency of the output signal. The PLL circuit 52 outputs a reference frequency to the spindle servo control unit 32, and causes the spindle servo control unit 32 to execute rotation control of the spindle motor 31. Based on the signals input from the reading unit 3, the reproducing unit 5 creates reproduction data.

  The output unit 7 is a D / A converter that converts the reproduction data, which is a digital signal, into an analog signal. The output unit 7 outputs the reproduction data converted into an analog signal to the external device 6. .

  The playback unit 5 is connected to the control unit 8, and the control unit 8 receives the playback data created by the playback unit 5, so that the standard of the optical recording medium 2 is set based on the playback data. It comes to recognize. Further, the input unit 4 is connected to the control unit 8, and the control unit 8 controls the playback unit 5 so that playback is executed based on various instructions input to the input unit 4. ing. The control unit 8 is connected to a memory 9 for storing subtitle data. The control unit 8 reproduces the subtitle data in the memory 9 so that the subtitle data in the memory 9 is superimposed on the reproduction data when the subtitle is displayed. Is to control. Here, subtitle data in a plurality of languages is stored in the memory 9, and each subtitle data is numbered. For example, for English, Japanese, and Chinese subtitle data, the English subtitle data is numbered 1, the Japanese subtitle data is number 2, the Chinese subtitle data is number 3, and so on.

Further, when the operation content corresponding to the standard of the optical recording medium 2 being reproduced is one operation content, the control unit 8 uses the instruction from the dual-purpose key in the input unit 4 as one item operation to reproduce the reproduction data. The reproduction unit 5 is controlled so as to be reflected directly on the screen. For example, when one operation content is subtitle switching, if there is one pressing operation on the dual-purpose key of the input unit 4, the control unit 8 receives an instruction signal from the dual-purpose key as one item operation. And the playback unit 5 is controlled so that the subtitles are cyclically switched to switch the playback data.
On the other hand, when the operation content corresponding to the standard of the optical recording medium 2 being reproduced is other operation content, the control unit 8 displays an operation input screen in which multiple items in the other operation content can be selected. Thus, the playback unit 5 is controlled to change the playback data. For example, when the other operation content is still image switching, if there is a single pressing operation on the dual-purpose key of the input unit 4, the control unit 8 sends an instruction signal from the dual-purpose key to multiple items. The reproduction unit 5 is controlled so that the operation input screen is displayed as a result of the operation determination.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG.
First, in step S <b> 1, the control unit 8 recognizes the standard of the optical recording medium 2 from the data of the optical recording medium 2 read by the reading unit 3 and input via the reproducing unit 5.
In step S2, the control unit 8 determines whether the recognized standard of the optical recording medium 2 is the VIDEO standard or the AUDIO standard. If the standard is the VIDEO standard, the control unit 8 proceeds to step S3 and performs the AUDIO. If it is a standard, the process proceeds to step S20.

In step S3, the control unit 8 determines whether or not there is a reproduction instruction. If there is no reproduction instruction, the control unit 8 stands by in that state. If there is a reproduction instruction, the control unit 8 proceeds to step S4.
In step S4, the control unit 8 determines whether or not an instruction signal has been input from the dual-purpose key of the input unit 4. If not, the control unit 8 waits in that state. The process proceeds to S5.

In step S5, the control unit 8 recognizes that the operation content input from the dual-purpose key is one operation content (for example, caption switching).
In step S6, the control unit 8 determines the subtitle display state before the instruction signal is input from the dual-purpose key. If there is no subtitle display, the control unit 8 proceeds to step S7. The process proceeds to step S10.

In step S7, the control unit 8 controls the reproduction unit 5 so that caption display in the first language is executed, and the process proceeds to step S8.
In step S8, the control unit 8 determines whether or not an instruction signal has been input from the dual-purpose key again within a predetermined time. If it has been input, the control unit 8 proceeds to step S6. finish.

  In step S10, the control unit 8 determines whether or not the currently displayed subtitle number is the maximum value. If the subtitle number is the maximum value, the control unit 8 proceeds to step S11. Migrate to

In step S11, the control unit 8 controls the reproduction unit 5 so that the caption display is turned off, and proceeds to step S8.
In step S12, the control unit 8 controls the playback unit 5 to switch to the next numbered subtitle, and proceeds to step S8.

In step S20, the control unit 8 determines whether or not there is a reproduction instruction. If there is no reproduction instruction, the control unit 8 stands by in that state. If there is a reproduction instruction, the control unit 8 proceeds to step S21.
In step S21, the control unit 8 determines whether or not an instruction signal has been input from the dual-purpose key of the input unit 4. If not, the control unit 8 waits in that state. The process proceeds to S22.

In step S22, the control unit 8 recognizes that the operation content input from the dual-purpose key is other operation content (for example, still image switching).
In step S <b> 23, the control unit 8 controls the reproduction unit 5 so that the operation input screen is displayed on the external device 6. In the case of still image switching, three types of operations including a forward feed operation, a reverse feed operation, and a home position return operation are displayed on the operation input screen.

  In step S24, the control unit 8 determines which operation on the operation input screen has been selected by the input unit 4, and proceeds to step S25 in the case of a forward operation, or step in the case of a reverse operation. The process proceeds to S26, and in the case of a home position return operation, the process proceeds to Step S27.

In step S25, the control unit 8 controls the playback unit 5 so that the still image selected by forward feeding is displayed, and the process ends.
In step S26, the control unit 8 controls the playback unit 5 so that the still image selected by the reverse feed is displayed, and the process ends.
In step S27, the control unit 8 controls the playback unit 5 so that the still image registered as the home position is displayed, and the process ends.

As described above, according to the present embodiment, when the operation content corresponding to the standard of the optical recording medium 2 being reproduced is subtitle switching, an instruction from the dual-purpose key of the input unit 4 is one item. In the case of still image switching that is directly reflected in the playback data as an operation, an operation input screen that allows selection of multiple items in the still image switching is displayed, so when inputting one operation content, The operation can be executed without displaying the operation input screen. That is, even with a DVD playback apparatus that can play back optical recording media 2 of different standards, operations using the operation input screen can be reduced, and as a result, operation efficiency is improved.
Of course, the present invention is not limited to the above-described embodiment and can be modified as appropriate.

It is a block diagram showing schematic structure of the DVD reproducing | regenerating apparatus concerning this embodiment. 2 is a flowchart of a program executed by the DVD playback device of FIG. It is a flowchart of the program run with the conventional DVD playback apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 DVD reproducing device 2 Optical recording medium 3 Reading part 4 Input part 5 Reproducing part 6 External apparatus 7 Output part 8 Control part 9 Memory 31 Spindle motor 32 Spindle servo control part 33 Pickup 34 Servo control part 35 Signal generation circuit 51 Phase compensation Circuit 52 PLL circuit

Claims (2)

A reading unit that individually reads optical recording media of different standards;
An input unit for inputting various instructions;
A reproduction unit that creates reproduction data based on data in the optical recording medium read by the reading unit;
An output unit for outputting the reproduction data created by the reproduction unit to an external device capable of displaying an image;
A controller for recognizing the standard of the optical recording medium read by the reading unit and controlling the reproduction unit so that reproduction is performed based on various instructions input to the input unit;
The various instructions include a plurality of operation contents related to each of the optical recording media having different standards.
Of the plurality of related operation details, one operation content consists of one item operation, and the other operation content consists of multiple item operations.
The controller is
When the operation content corresponding to the standard of the optical recording medium being reproduced is the one operation content, the instruction from the input unit is directly reflected in the reproduction data as the operation of the one item. And controlling the playback unit,
When the operation content corresponding to the standard of the optical recording medium being reproduced is the other operation content, an operation input screen capable of selecting the multiple items in the other operation content is displayed. A DVD playback apparatus, wherein the playback data is changed by controlling the playback section. The DVD player according to claim 1, wherein
The one operation content is subtitle switching corresponding to the VIDEO standard of the optical recording medium,
The DVD reproducing apparatus characterized in that the other operation content is still image switching corresponding to the AUDIO standard of the optical recording medium.

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