KR0183587B1 - Menu reproducing method for an interactive vcd with an audio reproducing function - Google Patents

Abstract

The present invention relates to an interactive VCD menu reproducing method having an audio reproducing function. When the selector item of VCD version 2.0 is set to infinite time, the audio information stored in the memory is forcibly replayed. By eliminating the versatility generated when the user's menu selection signal is not input, the user's convenience is improved accordingly, and the system is automatically adapted to the menu situation, thereby increasing the functionality of the system. .

Description

Interactive VCD menu playback with audio playback

1 is a block diagram illustrating a conventional compact disc player,

2 is a flowchart of FIG. 1,

3 is a block diagram illustrating an apparatus to which the method of the present invention is applied,

4 is an explanatory diagram showing the thio city structure of the track,

5 is a flowchart of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Video-CD 2: Optical Pickup

3: waveform shaping section 4: digital signal processing section

7: MPEG Video / Audio Decoder 8: Display

9: Image signal processor 10: Speaker

11: voice signal processor 12: spindle motor

13: servo control unit 14: key input unit

The present invention relates to a method of playing an interactive VCD menu with an audio playback function. In particular, when the wait time is set to infinity during the playback of a selector item of VCD 2.0, the audio information stored in the memory is forcibly played. It relates to an interactive VCD menu playback method equipped with an audio playback function.

In general, attention is drawn to a large-capacity information recording medium that is currently used. For example, when a recording method of a compact disc is classified, a lead-in area, a program area, and a lead-out area are defined from the inside of the compact disc. And an address (position on the disc), information reproduction time and absolute reproduction time of the information recorded on the compact disc, and are called so-called TOC (Table Of Contents). In the program area, for example, when music information is loaded on the compact disc, at least one music information CDDA is recorded, and the lead-out area contains information indicating the end of the program.

In addition, referring to FIG. 1, a device for reproducing the information contained in the above-mentioned disc, in particular, the information contained in the VCD V2.0 Interactive disc, will be described with reference to the information recorded from the disc 70 mounted in the tray. The optical processor 71 for reading, the digital processor 72 for digital signal processing of the information signal read from the optical pickup 71, and the signal processing operation of the digital processor 72 are controlled to control the operation of the system. The microcomputer 73 which controls collectively and the digital data signal inputted by the information control signal of this microcomputer 73 are isolate | separated into an error check bit, an address bit, data data, etc. in the unit of a sector, and the data data An MPEG decoder 74 for separating video signal data and audio signal data, and an output circuit portion 75 for output amplifying the video and audio signals separated by the MPEG decoder 74. It is broken.

The microcomputer 73 is connected with a key panel 76 for inputting a function setting signal of the user. In addition, the output circuit unit 75 is connected to a speaker 77 for emitting an audio signal to the outside and a display 78 for displaying an image signal as an image.

On the other hand, referring to the playback function of the VCD V2.0 interactive disc that is played by the CD playback system having the above configuration, first, when the disc 70 is mounted in the tray and loaded, the microcomputer 73 is first installed. As shown in FIG. 2, the process proceeds from the initial step S1 to the disc type discrimination step S2 to determine whether the disc 70 currently mounted in the tray is a VCD disc. If the disc is not the VCD as a result of the determination, the process proceeds to the normal disc mode execution step (S3) to execute the normal disc mode, for example, the normal CD / CDG mode function. However, if it is determined in the step S2 that the mounted disc is a VCD, the process proceeds to the disc version determination step S4 to determine whether the disc version is V 2.0.

That is, when the optical pick 71 reads information contained in the TOS of the disk 70 and inputs the information to the digital processor 72 by the operation control signal of the microcomputer 73, the digital processor 72 This input information is inputted to the MPEG decoder 74 by digital signal processing. At this time, among the digital signal processed signals, for example, the information stored in TOS is stored in the memory unit (not shown), and the PSEC is located at $ AO position of the point area of the stored TOS. Determine if the area is $ 20. As a result of the determination, when the PSEC area is not $ 20, for example, when the PSEC area is $ 00 or $ 10, that is, when it is CD / CDG, the set function is executed, for example, a music selection playback function.

However, if the PSEC area is $ 20, that is, VCD, the microcomputer 73 searches the INFO.VCD of the disc track to determine the disc version. The search result determines whether the SVN (Specification Version Number) of the INFO.VCD is $ 0200. If the SVN is $ 0200, the version of the mounted disk is V2.0, whereas if the SVN is $ 0101, the microcomputer 73 recognizes that the disk version is V1.1.

Accordingly, if the disc version is not V2.0 as a result of the disc version determination step (S4), the process proceeds to the version V1.1 function execution step (S5) and the information of the version V1.1 function, that is, the disc track 1 The track 2 information, for example, moving image information, is reproduced immediately without reading. However, if the disc version is V2.0 as a result of the determination in step S4, the process proceeds to the VCD track information execution step S6 and stores the disc track information in order. That is, the contents of the ENTRIES.VCD, LOT.VCD, PSD.VCD, and PVD.VCD files are read sequentially and stored in the memory. After the VCD track information playback step S6, the selection list determination step S7 is performed to determine whether the selection list header value of the selection list in the read PVD.VCD file is $ 18. If it is determined that the value is not $ 18, the process proceeds to the guitar list processing step S8. Therefore, in this guitar list processing step S8, the set list is executed. If the selection list header value is $ 1A, the extended selection list function is executed. However, if the selection list header value is $ 18 as a result of the determination in the step S7, the process proceeds to the selection item reproducing step S9 to execute the items contained in the selection list.

That is, if the selection list header value is $ 18, the microcomputer 73 executes the play item number recorded in the 19th of the read selection list.

In this case, when the play item number is 0 to 1, it is not played (play nothing), and 2 to 99 is normal track playback (track # 2 ---- motion picture playback), and 1000 to 2979 are segments. Playitem playback, that is, high-resolution still images are played back.

Therefore, if the playitem number is 1001, for example, the microcomputer 73 processes the high resolution still image recorded in the track # 1 through the MPEG decoder 74 and inputs the same to the output circuit unit 75. The output circuit unit 75 amplifies the input high resolution still image data and outputs the same through the speaker 77 or the display 78. After the step (S9), the process proceeds to the selection item playback completion determination step (S10) to determine whether the playback operation of the currently selected selection item is completed, and as a result of the determination, if the selection item playback operation is not yet completed, the previous step. Returning to step S9, the loop is repeated. However, when it is determined in step S10 that the playback operation of the currently selected selection item is completed, the process proceeds to the list waiting time determination step S11, where the wait time for time out of the currently played track is completed. It is determined whether it is set to infinity ($ FF). In addition, if the current waiting time is not infinite ($ FF) as a result of the determination in the step (S11), for example, if it is set to 70 [SEC] proceed to the setting waiting time execution step (S12) to continue the current life menu screen Display for 70 seconds and read another playback offset.

However, if the modern time is set to infinity ($ FF) as a result of the determination in step S11, the process proceeds to the key input determination step S13 to determine whether there is a current key input. That is, it is determined whether the menu screen selection signal of the user is input. At this time, when no key input is set, the process returns to the previous step (S9) and continues to display the currently generated menu screen. However, when the menu selection setting signal of the user is input as a result of the determination in step S13, the process proceeds to the corresponding offset reading step S14 to read the currently set offset. For example, one of the information in the selection BN offset is selected.

In addition, after the step S14, the process proceeds to the offset determination step S15 to determine whether there is information on the set offset. If the offset is not found, the process returns to the previous step S5 to repeat the loop. . However, if it is determined in step S15 that there is information in the offset, the process proceeds to the offset information reproducing step S16 to execute the information of the offset.

That is, if the wait time for Time out of the currently played track is not set to infinity ($ FF) after the micom 73 plays back the items contained in the selection list, for example, it is set to 70 [SEG]. If it is, the MPEG decoder 74 displays the current menu screen on the display for 70 seconds and reads out another playback offset. However, when the modern time is set to infinity ($ FF), the microcomputer 73 determines whether the user inputs the menu screen selection signal. If the key input is not set, the display () is performed. The current menu screen will be displayed continuously.

However, the conventional VCD reproducing apparatus as described above is currently operated until the menu screen selection signal of the user is inputted if the wait time for time out is set to infinity ($ FF) after reproducing the menu screen of the selection list. The menu screen is displayed monotonously. Therefore, the user feels bored rather than convenient, thereby increasing the inconvenience of using the system. Also, since the system does not appropriately respond to external situations, there is a problem that the functionality of the system is deteriorated accordingly.

Accordingly, the present invention was invented to solve the above-mentioned problems, and when the waiting time of the selector item playback of VCD version 2.0 is set to infinity, the user is forced to play the audio information stored in the memory. This eliminates the monotony generated when the menu selection signal is not input. Therefore, the convenience of use is improved. Of course, the system automatically adapts to the menu situation. Its purpose is to provide a menu playback method of the interactive VCD provided.

In order to achieve the above object, the present invention relates to a selection list setting process of judging whether a selection list item is set by reading a PVD (VCD.VCD) file during playback of an interactive 2.0 version CD disc. After the selection list setting judgment process, the selection item is played back and the selection item playback completion judgment process for determining whether or not the play is completed, and the wait time item of the selection list after the selection item playback completion judgment process is set to infinity ($ FF). If so, characterized in that the audio playback process for reproducing the voice signal data currently stored in the memory unit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The apparatus to which the method of the present invention is applied includes an optical pickup (2) for detecting a data signal contained in a video-CD (1, Video-CD), and an optical pickup (2) as shown in FIG. A waveform shaping section 3 for waveform shaping the analog data signal detected by the waveform, a digital signal processing section 4 for digital signal processing the data signal waveform shaping by the waveform shaping section 3, and the digital signal. The microcomputer 5 which controls the signal processing operation of the processing unit 4 and collectively controls the operation of the system, and the digital data signal inputted by the CD-ROM control signal of the microcomputer 5 error in sectors. MPEG decoder 6 for separating check bits, address bits and data data, and MPEG video / audio decoder 7 for separating data data of the MPEG decoder 6 into video signal data and audio signal data (MPEG / Video / Audio Decoder and the MPEG / Audio Decoder The video signal processing unit 9 for processing the video signal data separated by the 7 and outputting the video signal through the display 8 and the audio signal data separated by the MPEG video / audio decoder 7 at low frequency. It consists of a voice signal processing unit 11 to amplify and output to the outside through the speaker (10).

The microcomputer 5 is connected to a servo control unit 13 for controlling the drive operation of the spindle motor 12 by a servo control signal, and a keyboard 14 for inputting a user function setting signal.

Here, the spindle motor 12 is driven at a rotational speed at which the optical pickup 2 can easily detect the information recorded in the video CD 1.

Next, the method of the present invention applied to the apparatus having the above configuration will be described.

First, when the VCD V2.0 Interactive disc 1 is loaded into the tray and loaded, the microcomputer 5 goes from the initial step S1 to the disc type discrimination step S2 as shown in FIG. It proceeds and determines whether the disc 1 currently mounted in the tray is a VCD disc. If the disc version is not 2.0 as a result of the determination, the process proceeds to the normal disk mode execution step (S3) and executes the normal disk mode, for example, the general CD / CDG mode function. However, if it is determined in the step S2 that the mounted disc is a VCD, the process proceeds to the disc version determination step S4 to determine whether the disc version is V2.0.

That is, when the video-CD 1 is mounted on the tray and the playback signal is set through the key input unit 14, the microcomputer 5 recognizes this and drives the spindle motor 12 through the servo control unit 13. do. Then, the video-CD 1 is also rotated, and at the same time, the optical pickup 2 detects the data signal contained in the video-CD 1 and inputs it to the waveform shaping section 3. The waveform shaping section 3 then waveform-shapes the input analog detection data signal and inputs it to the digital signal processing section 4, whereby it enters the TOS of the disk 1. Read information. The digital signal processor 4 then inputs the input information to the MPEG decoder 6 by digitally processing the input information. At this time, among the digital signal processed signals, for example, the information stored in the thio city is stored in a memory unit in which the microcomputer 5 is embedded, and as shown in FIG. Determine if the PSEC area at position $ AO is $ 20.

If the PSEC area is $ 00, then CDDA or CD-ROM, if $ 10 is CD-1, and if $ 20 is CD-ROM XA (VCD).

Therefore, when the PSEC area is not $ 20, for example, when the PSEC area is $ 00 or $ 10, that is, when it is CD / CDG, the set function is executed, for example, a music selection playback function. However, if the PSEC area is $ 20, that is, a VCD, the microcomputer () searches the INFO.VCD of the disc track to determine the disc version. The search result determines whether the SVN (Specification Version Number) of the INFO.VCD is $ 0200. If the SVN is $ 0200, the version of the mounted disk is V2.0, whereas if the SVN is $ 0101, the microcomputer 5 recognizes that the disk version is V 1.1.

Therefore, if the disc version is not V2.0 as a result of the determination in the disc version determination step (S4), the function returns to the normal disc mode execution step (S3). The track 2 information, for example, the moving image information, is reproduced immediately without reading the track 1 information. However, if the disc version is V2.0 as a result of the determination in the step S4, the process proceeds to the VCD track information execution step S5, where the disc track information stored in the TOS is read and stored in order. That is, the contents of the ENTRIES.VCD, LOT.VCD, PSD.VCD, and PVD.VCD files are read sequentially and stored in the memory.

After the VCD track information playback step S6, the selection list determination step S7 is performed to determine whether the selection list header value of the selection list in the read PVD.VCD file is $ 18. If it is determined that the value is not $ 18, the process proceeds to the guitar list processing step S8. Therefore, in the guitar list processing step S8, the set list is executed. If the selection list header value is $ 1A, the extended selection list function is executed. However, if the selection list header value is $ 18 as a result of the determination in the step S7, the process proceeds to the selection item reproducing step S9 to execute the items contained in the selection list. That is, if the selection list header value is $ 18, the microcomputer 73 executes the play item number recorded in the 19th of the read selection list.

In this case, when the play item number is 0 to 1, it is not played (play nothing), and 2 to 99 is normal track playback (track # 2 ---- motion picture playback), and 1000 to 2979 are segments. Playitem playback, that is, high-resolution still images are played back.

Therefore, if the playitem number is 1001, for example, the microcomputer (1) processes the high resolution still image recorded in the track # 1 through the MPEG decoder 74 and inputs it to the output circuit unit 75. The output circuit unit 75 amplifies the input high resolution still image data and outputs the same through the speaker 77 or the display 78.

After the step (S9), the process proceeds to the selection item playback completion determination step (S10) to determine whether the playback operation of the currently selected selection item is completed, and as a result of the determination, if the selection item playback operation is not yet completed, the previous step. Returning to step S9, the loop is repeated. However, when it is determined in step S10 that the playback operation of the currently selected selection item is completed, the process proceeds to the list waiting time determination step S11, where the wait time for time out of the currently played track is completed. Observe that it is set to infinity ($ FF). In addition, if the current waiting time is not infinite ($ FF) as a result of the determination in the step (S11), for example, if it is set to 70 [SEC], proceed to the setting waiting time execution step (S12) to continue the current live menu screen Display for 70 seconds and read another playback offset.

However, if the modern time is set to infinity ($ FF) as a result of the determination in the step S11, the process proceeds to the audio reproduction step S13 and the memory unit of the current microcomputer (e.g. To reproduce the audio data signal stored in the ROM. After the audio reproduction step S13, the process proceeds to the key input determination step S14 to determine whether there is a current key input. That is, it is determined whether the menu screen selection signal of the user is input. At this time, if no key input is set, the process returns to the previous step (S9) and continues to display the currently generated menu screen. However, if the user's menu selection setting signal is input as a result of the determination in step S14, the process proceeds to the corresponding offset reading step S15 to read the currently set offset. For example, read any information in the Selection # Base of selection number (= BSN) offset].

In addition, after the step S15, the process proceeds to the offset determination step S16 to determine whether there is information on the set offset. If the offset is not found, the process returns to the previous step S9 to repeat the loop. . However, if it is determined in step S16 that there is information in the offset, the process proceeds to the offset information reproducing step S17 to execute the offset information.

That is, when the wait time for Time out of the currently played track is not set to infinity ($ FF) after the playback of the item recorded in the selection list, the micom () is set to 70 [SEC]. If present, it displays the current menu screen for 70 seconds on the display () through the MPEG decoder () and reads another playback offset. However, when the current waiting time is set to infinity ($ FF), the microcomputer () determines whether the user inputs the menu screen selection signal. If the key input is not set, the current display through the display () is performed. Simultaneously displaying the generated menu screen, the audio data is decoded in the memory unit in which the microcomputer 5 is built-in or in the audio track stored in the EPROM and input to the MPEG decoder 6. Then, the MPEG decoder 6 decodes the control information in the track of the voice data signal input by the microcomputer 5, and separates error check bits, address bits and data data, for example, by sector. An MPEG video / audio decoder 7 is inputted. In addition, the MPEG video / audio decoder 7 transmits the data data containing the audio information to the audio signal processing unit 11 by separating the audio signal data and the video signal data. The voice signal processing unit 11 then amplifies the input voice signal data at low frequency and then emits the sound to the outside through the speaker 10. Therefore, the voice information, for example, the music information, is played to the user while the user waits to input the menu selection signal after the selection menu screen is played.

As described above, the present invention causes the audio information stored in the memory to be forcibly reproduced when the waiting time is set to infinity during the playback of the selector item of VCD 2.0, so that the user's menu selection signal is not input. Since the versatility is eliminated, the convenience of use is improved accordingly, but of course, the system is automatically adapted to the menu situation, thereby increasing the functionality of the system.

Claims (1)

Version 2.0 with Interactive Functions During the playback of VCD discs, the selection list setting judgment process is used to read the PVD.VCD file to determine whether the selection list item has been set, and the selection item is played after the selection list setting judgment process. Judging the selection item playback completion judging whether or not the playback is complete, and if the wait time item of the selection list is judged after this selection item playback completion judging, the voice currently stored in the memory unit is set to infinity ($ FF). An interactive VCD menu reproducing method having an audio reproducing function, characterized in that it comprises an audio reproducing process of reproducing signal data.