KR100275873B1 - Multi-optical disc reproducing apparatus and control method thereof - Google Patents

Abstract

PURPOSE: A multi-optical disk player and a control method thereof are provided to store jacket picture data in a jacket memory, and to search a necessary optical disk by playing the jacket picture data whenever a user performs an optical disk selecting operation. Therefore, it is possible to minimize a searching time of the optical disk. CONSTITUTION: A player plays jacket picture data from optical disks. A memory (119) stores the jacket picture data outputted from the player. A controller controls to an output of the jacket picture data stored in the memory(119) when a jacket picture display command is inputted. A displayer displays the jacket picture data outputted from the memory(119) under the control of the controller.

Description

Multi-optical disc player and control method thereof.

1 is a block diagram of a multi-optical disc reproducing apparatus according to the prior art.

2 is a block diagram of a multi-optical disk reproducing apparatus according to the first embodiment of the present invention.

3 is an operation flowchart by storing jacket data for each optical disc in the jacket memory of the multi-optical disc reproducing apparatus according to the first embodiment of the present invention.

4 is a flowchart of operation of reproducing a jacket picture file according to the first embodiment of the present invention.

5 is a block diagram of a multi-optical disc reproducing apparatus according to a second embodiment of the present invention.

6 is an operation flowchart for reproducing a jacket picture file recorded on an individual optical disc, and storing the jacket picture files in a PIP apparatus.

7 is a flowchart illustrating an operation of displaying a jacket picture file using a PIP device.

8 is a state output when four jacket pictures are stored in one frame memory.

9 is a block diagram of a multi-optical disc reproducing apparatus according to a third embodiment of the present invention.

10 is a flowchart illustrating an operation of storing jacket picture data in a PIP device of a television according to a third embodiment of the present invention.

Fig. 11 is an operation flowchart for displaying jacket picture data using a PIP device of a television.

12 is a diagram showing jacket picture data stored in a jacket memory.

* Explanation of symbols for main parts of the drawings

101,201,301: Multi-changer deck 103,203,303: Optical disc

105,205,305: Motor 107,207,307: Servo circuit

109,209,309: Microprocessor 111,211,311: Optical pickup device

113,213,313: signal processing circuit 115,215,315: error correction circuit

117,217,317: VBR buffer 119: jacket memory

123,223,323: Video decoding circuit 125,225,325: Graphics circuit

127,227,327: Audio signal processing circuit 131,231,331: NTSC / PAL encoder

235,335 PIP device 237,337 Mixer

341: Microprocessor

129,133,229,233,329,333: Digital / Analog Converter

The present invention relates to a multi-optical disc reproducing apparatus, and more particularly, to a multi-optical disc reproducing apparatus capable of searching a desired optical disc among a plurality of optical discs in a minimum time and a control method thereof.

The multi-optical disc reproducing apparatus is a device for mounting a plurality of optical discs in a multi-changer deck and selectively reproducing an optical disc desired by a user. Optical discs used in such a multi-optical disc player have data commonly referred to as a jacket picture. The jacket picture data includes introductory data about each disc, such as each optical disc volume, disc information, and disc name. image).

Therefore, when a user wants to play a specific optical disc on a plurality of optical discs provided in the multi-change deck, the user performs an operation of identifying which optical disc by reproducing the jacket picture data of the optical disc, and by repeating such an operation, the desired jacket picture is repeated. When the data is found, it is possible to play back the desired optical disc by instructing the reproduction operation accordingly.

A conventional multi-optical disc reproducing apparatus according to the above description will be described in detail with reference to FIG.

When trying to play a specific optical disc on a plurality of optical discs mounted on the multi-changer deck 1, the navigator 17 controls the operation of reproducing jacket picture data recorded on each optical disc. That is, an operation for searching for a desired disk is performed before a specific optical disk playback operation is performed, and this operation is performed as follows.

The microprocessor 15 outputs a control signal to the servo circuit 13, and the servo circuit 13 applies a drive signal to the optical pickup device 3. The optical pickup device 3 reproduces jacket picture data from one optical disk 1 in a plurality of optical disks mounted on the multi-changer deck 1.

The reproduced jacket picture data is output from the signal processing circuit 5 after signal processing such as predetermined amplification and phase correction, and this output signal is input to the error correction circuit 7. The error correction circuit 17 corrects and outputs an error generated in the bit stream of the inputted reproduction signal, and the output signal is stored in the variable transfer rate buffer 9.

The variable transfer rate buffer 9 outputs data according to a first in fist out (FIFO) method of first outputting the input data, and among the output jacket picture data under the control of the navigator 17, the video data is a video. The audio data is input to the decoding circuit 21, the audio data is input to the audio signal processing circuit 27, and the caption data is input to the graphics circuit 25.

After the data input to each decoding circuit is converted into an analog signal by the digital / analog converters 23 and 29, the video signal is mixed with the caption data and encoded by the NTSC / PAL encoder 31 to be displayed as a broadcast signal. It is output through a device (not shown), and the audio signal is output through a speaker (not shown). In this way, in the display device (not shown), the jacket picture information for the optical disc 1 currently being read by the optical pickup device 3 is output on a still screen.

However, if the jacket picture currently being output is not the data for the optical disc desired by the user, the user gives the microprocessor 15 a user command to play the jacket picture of the next optical disc.

The microprocessor 15 controls the servo circuit 13 to move the optical pickup apparatus 3 to the next optical disk, and after this moving operation, the jacket picture data for the next optical disk reproduced from the optical pickup apparatus 3 It is displayed via the signal processing circuit 5, the error correction circuit 7, the VBR buffer 9 and the like. Since the above process is performed in the same manner as the initial operation, detailed description thereof will be omitted.

When the jacket picture displayed on the display device (not shown) is a still screen desired by the user by repeating the above process, the user can read the optical disc currently read by the optical pickup device 3 by the microprocessor 15. The control signal to reproduce the signal is output from (1). Then, according to this control signal, the microprocessor 15 controls the servo circuit 13, and the servo circuit 13 controls the driving of the optical pickup device 3, so that the optical pickup device 3 is an optical disc ( The information recorded in 1) starts to be reproduced continuously.

In other words, the conventional multi-optical disc reproducing apparatus requires the pickup apparatus to search for the position of the jacket picture recorded on each disc at every user's request in order to reproduce the optical disc desired by the user, and thus to search for the desired optical disc. There was a problem that requires a lot of time.

In addition, when minimizing the time for checking the jacket picture recorded on each disc by individualizing the optical pickup apparatus that reads recording signals from a plurality of optical discs, the volume of the apparatus is relatively large and the cost of product implementation is avoided. I could not.

Accordingly, an object of the present invention is to provide a multi-optical disc reproducing apparatus and a control method thereof, which can minimize a desired optical disc search time.

A multi-optical disc reproducing apparatus according to an embodiment of the present invention for achieving the above object comprises: a reproducing circuit for reproducing jacket picture data from a plurality of optical discs, a memory unit for storing jacket picture data output from the reproducing circuit; And a control circuit for controlling the output of the jacket picture data stored in the memory unit when a jacket picture display command is input, and a display unit for displaying the jacket picture data output from the memory means under the control of the control circuit. It features.

A multi-optical disc reproducing method according to an embodiment of the present invention for achieving the above object comprises: a first step of detecting jacket picture data from a plurality of optical discs, a second step of reproducing the detected jacket picture data; A third step of storing the reproduced jacket picture data; a fourth step of displaying the reproduced jacket picture data according to a user's request; and a fifth step of searching for desired jacket picture data among the displayed jacket picture data. Characterized in that made.

The multi-optical disc reproducing apparatus according to the first embodiment of the present invention stores a jacket picture file recorded on each disc at the beginning of reproduction in a memory, and sequentially outputs a jacket picture file stored when the user desires to search for the desired optical disc. Minimize time.

In addition, the multi-optical disc reproducing apparatus according to the first embodiment of the present invention optimizes the use of the memory by storing the jacket picture file before being stretched in the memory.

The multi-optical disk reproducing apparatus according to the second embodiment of the present invention is characterized in that a plurality of jacket picture data can be output on one screen by using a picture in picture (PIP) function.

The multi-optical disc reproducing apparatus according to the third embodiment of the present invention is characterized by minimizing the implementation cost of the device by outputting the jacket picture data using the PIP function of the television, It features compatibility.

Hereinafter, a multi-optical disc reproducing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 shows a block diagram of a multi-optical disc reproducing apparatus according to the first embodiment of the present invention.

Looking at the configuration, it is recorded from the multi-changer deck 101 is mounted by rotating a plurality of optical disks and driven by the drive of the motor 105, and from any optical disk 103 mounted on the multi-changer deck 101 An optical pickup apparatus 111 for reading out a signal, converting the signal into an electrical signal, and outputting the signal; and a signal processing circuit 113 for inputting a reproduction signal from the optical pickup apparatus 111 to perform signal processing such as amplification and phase correction. Included.

And a microprocessor for controlling the operation of the servo circuit 107 and the servo circuit 107 and the signal processing circuit 113 to perform tracking and focusing control so that accurate data can be reproduced from the optical pickup device 111. 109 is included.

The reproduction signal output from the signal processing circuit 113 is input to the error correction circuit 115, and after correcting an error generated in the bit stream by the error correction circuit 115, a variable transmission rate ("VBR") is described. Is temporarily stored in the buffer 117. The VBR buffer 117 is used to adjust the data length of the transmitted video signal because it has a variable length. First, the VBR buffer 117 takes the form of a frist in frist out (FIFO).

In addition, there is a navigator 121 which performs control of a user interface function such as reading the video / audio data selected by the user from the data recorded on the optical disc 103 using system data and transmitting it at a required speed. . Thus, the navigator 121 transmits the necessary control data and the like to the microprocessor 109, and monitors the data output from the VBR buffer 117 to input the jacket picture data. The control operation for storing in the memory 119 is performed.

The playback signal output from the VBR buffer 117 is input to the video decoding circuit 123 under the control of the navigator 119, the audio data is input to the audio signal processing circuit 127, and The caption data is input to the graphics circuit 125.

In addition, the jacket picture data reproduced by the user command is stored in the jacket memory 119 through the VBR buffer 117 under the control of the navigator 121. The data stored in the jacket memory 119 includes representative video information for each optical disc and volume information of the corresponding optical disc.

The video data inputted to the video decoding circuit 123 by the transmission path control of the navigator 121 is decompressed and decoded and outputted, and the caption data is output after signal processing is performed in the graphics circuit 125. The audio data is decompressed and decoded by the audio signal processing circuit 127 and output. Typically, video data recorded on a DVD is compressed using the MPEG2 compression algorithm, and audio data is compressed using the Dolby-AC3 compression algorithm.

The video data output from the video decoding circuit 123 and the subtitle data output from the graphics circuit 125 are mixed in a mixer (not shown), input to a digital / analog converter 129 for video, and converted into analog signals. Is output. The video and subtitle data converted into analog signals are converted into broadcast signals by the NTSC / PAL encoder 131 and output through a display device (not shown).

The audio data output from the audio signal processing circuit 127 is input to the audio digital / analog converter 133, converted into an analog signal, and output through a speaker (not shown).

The following describes the operation process of the multi-optical disc reproducing apparatus according to the first embodiment of the present invention according to the above configuration in detail.

The multi-changer deck 103 is equipped with a plurality of optical disks. Thus, when the optical disk is mounted on the multi-changer deck 103, if the jacket data for each optical disk is recorded together with the volume information of the corresponding optical disk, when the operation for selecting a specific optical disk is required, the jacket information is stored. The desired optical disc can be searched, and thus a control operation for reproducing the optical disc corresponding to the shortest time can be performed.

3 is an operation flowchart according to the step of storing jacket data for each optical disc in the jacket memory of the multi-optical disc reproducing apparatus in the first embodiment of the present invention.

Before a specific optical disc reproducing operation, the microprocessor 109 controls the operating state of the servo circuit 107, and the servo circuit 107 drives the motor 105 under the control of the microprocessor to operate the multi-changer deck 103. At the same time, it controls to read information recorded on an arbitrary optical disc 103 from the optical pickup device 111. As shown in FIG. The microprocessor 109 then determines whether a disc is mounted in each optical disc mounting portion of the multi-changer deck 101 (step 150 in FIG. 3).

By the control operation, the optical pickup device 111 reads out the data recorded on any optical disc 103, and this reproduction signal is subjected to signal processing such as predetermined amplification and phase correction in the signal processing circuit 113. Is printed. The outputted reproduction signal is input to the error correction circuit 115, and the error correction circuit 115 corrects and outputs an error generated in the bit stream of the reproduction signal, and this output signal is temporarily supplied to the VBR buffer 117. Stored. Since the VBR buffer 117 is a buffer for outputting the first output signal, the VBR buffer 117 is sequentially output from the first input data.

If the optical disc in step 150 is mounted, it is determined whether a jacket picture file is recorded on the mounted optical disc (step 152 in FIG. 3).

In the determination of the presence or absence of the jacket picture file in step 152, the navigator 121 recognizes the header data from the reproduction signal of the optical disc and recognizes the position data where the jacket picture file is located by the header data recognition operation. It becomes possible. In general, a digital video disc adopts a UDF (Universal Disc Format) file system proposed by ISO9660. The position data of a desired file is read by reading video management information (VMG), which is header data in the UDF file system. You will know.

That is, the navigator 121 recognizes the header data from the data output from the VBR buffer 117, determines whether there is a jacket picture file according to step 152 of FIG. 3, and at the same time, there is a jacket picture file. In this case, even the location of the jacket picture file is recognized.

In this manner, the navigator 121, which recognizes the position of the jacket picture sector, outputs the detected position data to the microprocessor 109. By this control signal, the microprocessor 109 recognizes that there is a jacket picture data, and controls the servo circuit 107 so that the optical pickup device 111 is moved to the detected track. After this moving operation, the optical pickup device 111 reads out the jacket picture file of the optical disc 103 currently being reproduced (step 154 in FIG. 3).

At this time, the jacket picture file read from the optical pickup device 111 is currently reproduced in the jacket memory 119 under the control of the navigator 121 through the signal processing circuit 113, the error correction circuit 115, and the VBR buffer 117. The data is stored together with the volume information of the optical disc (step 156 of FIG. 3).

After the jacket picture file of the optical disc currently being reproduced by the above operation is stored in the jacket memory 119, the microprocessor 109 moves the optical pickup device 111 to the next optical disc in the servo circuit 107. Outputs a control signal.

Therefore, the optical pickup apparatus 111 is moved to the next optical disc, and after this movement operation, the optical pickup apparatus 111 reproduces the next optical disc. The reproduction signal is recognized by the navigator 121 through the signal processing circuit 113, the error correction circuit 115, and the VBR buffer 117. At this time, the microprocessor 109 outputs jacket information to the optical disc currently being reproduced. In step 152 of FIG. At this time, the determination operation is performed in the navigator 121, that is, the header data is recognized from the data output from the VBR buffer 117, and if the jacket picture file exists, the position of the jacket picture file is recognized. By outputting this position signal to the microprocessor 109, the microprocessor knows the presence or absence of jacket picture data.

If it is determined in step 152 that the jacket picture file exists, the optical pickup device is moved to a location where the jacket picture file is located, and a control signal for reproducing the jacket picture file is output. By this control signal, the servo circuit 107 performs a track jump of the optical pickup device 111, and after this movement operation, the optical pickup device 111 reads out a jacket picture file of the optical disc 103 currently located. (Step 154 of FIG. 3).

At this time, the jacket picture file read from the optical pickup device 111 is currently reproduced in the jacket memory 119 under the control of the navigator 121 through the signal processing circuit 113, the error correction circuit 115, and the VBR buffer 117. The data is stored together with the volume information of the optical disc (step 156 of FIG. 3). Of course, at this time, since the jacket information for the first optical disk is stored in the jacket memory 119, the jacket information for the optical disk currently reproduced is stored in the next location. That is, the jacket memory 119 sequentially stores the input data and sequentially performs the output operation.

That is, after the optical disc is mounted according to step 150 of FIG. 3, the microprocessor 109 repeats the operations of steps 152 to 156 of FIG. 3 to determine whether there is a jacket picture file for the mounted disc. Are sequentially detected, and for the optical disk in which the jacket picture file exists, the corresponding jacket picture file is reproduced and stored in the jacket memory.

By repeating the above steps, the steps 150 through 156 shown in FIG. 3, all the jacket picture files of the optical disc mounted on the multi-changer deck 101 are reproduced to the jacket memory 119. After the storing process is completed, an operation of reproducing an arbitrary optical disc or a jacket picture file stored in the jacket memory 119 is controlled by a user command.

4 is an operation flowchart of reproducing a jacket picture file according to the first embodiment of the present invention.

The following describes the operation of reproducing the jacket picture file during any optical disc reproduction operation with reference to FIG.

In the reproducing operation of the multi-optical disc reproducing apparatus, the optical pickup device 111 reads the recorded data from any optical disc mounted on the multi-changer deck 103, and the read-out data is read out from the signal processing circuit 113. After predetermined signal processing such as amplification and phase correction is performed, the signal is input to the error correction circuit 115. The error correction circuit 115 corrects and outputs a sign error generated in the bit stream from the inputted reproduction signal, and the output signal is stored in the VBR buffer 117.

The VBR buffer 117 outputs a stored signal according to a method of first outputting a first input signal, and the output signal is input to the video decoding circuit 123. In this process, the navigator 121 recognizes system data in the reproduction signal output from the VBR buffer 117, and converts the recognized system data into the video decoding circuit 123, the graphics circuit 125, and the audio signal processing circuit. Output to (127).

The video decoding circuit 123 extracts only a video signal from the data input from the VBR buffer 117 by using the system data, and then outputs the remaining signals (subtitle signals and audio signals) to the graphics circuit 125. The graphics circuit 125 extracts only the subtitle signal from the input data by using the system data applied by the navigator 121 and outputs the rest signal (audio signal) to the audio signal processing circuit 127.

In this process, the video / subtitle data input to each decoding circuit is decompressed and output, and the two output data are mixed and input to the digital / analog converter 129. After conversion to an analog signal, the NTSC / PAL encoder 131 is converted to a broadcast signal and then output. In addition, after the audio signal input to the audio signal processing circuit 127 is signal processed, it is converted into an analog signal and output.

While the above-described playback operation of any of the optical discs is performed, the microprocessor 109 constantly monitors whether an external user command to display the jacket picture file is input (step 160 of FIG. 4).

When the jacket picture display command of step 160 is input, the microprocessor 109 determines whether a jacket picture file is currently displayed on a display device (not shown) (step 162 of FIG. 4).

However, on the display device (not shown), the playback signal according to any optical disc playback operation is being displayed. After the determination in step 162 of FIG. 4, the microprocessor 109 makes the first jacket picture data in the navigator 121. Outputs a control signal for display, and the navigator 121 searches for the first jacket picture data stored in the jacket memory 119 by this control signal (step 166 of FIG. 4).

When the first jacket picture data is found by the navigator 121 in step 166, the navigator 121 outputs a control signal to the VBR buffer 117 to temporarily stop output of the data. By this operation, the reproduction operation for any optical disc is stopped on the display device (not shown). The navigator 121 reads the first jacket picture data found in step 166 and transmits it to the video decoding circuit 123 (step 168 of FIG. 4).

After extracting only video data from the jacket picture data input to the video decoding circuit 123 in step 168, the remaining data is output to the graphics circuit 125, and only the caption data is extracted from the graphics circuit 125. The audio data is input to the audio signal processing circuit 127. Of course, this process is to input the system data applied from the navigator 121 in each decoding circuit and to separate the data according to the system data.

As described above, the jacket picture data input to each decoding circuit is decoded and outputted, and after this output signal is converted into an analog signal, the video / subtitle data is converted into a broadcast signal by the NTSC / PAL encoder 131 and then a display device ( Audio data is converted into an analog signal and then output through a speaker (not shown) or the like.

When the jacket picture data is reproduced as described above, the microprocessor 109 controls the reproduced jacket picture data to be maintained on the still screen (step 170 of FIG. 4).

The jacket picture data is displayed on the screen until the operation of step 170 of FIG. 4 is performed. After this process, the microprocessor 109 determines which command is input again by an external user command.

At this time, if a user command to display the jacket picture is input again (step 160 of FIG. 4). The microprocessor 109 determines whether the current jacket picture data is being displayed by the step 162, and when the current jacket picture data is being displayed, the next jacket of the jacket picture data currently being displayed by the step 164 of FIG. The control signal to find the picture data is output to the navigator 121. When the signal is input, the navigator 121 searches for the jacket picture data for searching and outputting the jacket picture data stored in the jacket memory 119. If the jacket picture data in the display is the last, the first jacket picture data is displayed. The search operation will be performed.

The jacket picture data found in this way is output to the decoding circuit under the control of the navigator 121 (step 168 in FIG. 4), decoded by each decoding circuit, and then output to maintain the still screen (Fig. 4). Step 170).

When the jacket picture file desired by the user is found by performing the operations 160 to 170 of FIG. 4, the user authorizes a command to play the optical disc corresponding to the jacket picture file currently being played. Then, the microprocessor 109 receives the optical disk volume (position information) currently recognized by the navigator 121 and performs a control operation for controlling the corresponding optical disk. That is, the navigator 121 also recognizes the volume (location information) of the optical disc on which the loaded jacket picture file is recorded when loading the jacket picture data stored in the jacket memory 119 for display. Information that is recognized is output by the request of the microprocessor 109.

At this time, the microprocessor 109 moves the optical pickup device 111 to the optical disc desired by the user, and controls the servo circuit 107 to perform a control operation for reproducing a specific optical disc from the optical pickup device 111. .

That is, in the multi-optical disc reproducing apparatus according to the first embodiment of the present invention, when the optical disc is mounted, the jacket picture data and the corresponding optical disc volume information for each optical disc are stored in the jacket memory. When one optical disc is to be played back, the desired optical disc search time can be shortened by displaying a jacket picture stored in the jacket memory.

In addition, the multi-optical disk reproducing apparatus according to the first embodiment of the present invention can optimize the use of the memory by storing the state before the jacket picture data stored in the jacket memory 119 is decompressed, and the jacket memory ( 119) is connected to the rear end of the decoding circuit to store the expanded jacket picture data, so that the user can output the jacket picture data at a faster time when the user requests the output of the jacket picture data.

5 is a block diagram of a multi-optical disc reproducing apparatus according to a second embodiment of the present invention.

Describe the configuration. Reads signals recorded from the multi-changer deck 201 mounted on a plurality of optical disks and rotated by the driving of the motor 205 and any optical disk 203 mounted on the multi-changer deck 201. An optical pickup device 211 for converting and outputting an electrical signal and a signal processing circuit 213 for inputting a reproduction signal from the optical pickup device 211 to perform signal processing such as amplification and phase correction are included.

And an optical pickup apparatus by controlling the servo circuit 207 and the servo circuit 207 and the signal processing circuit 213 to perform tracking and focusing control so that accurate data can be reproduced from the optical pickup apparatus 211. Included is a microprocessor 209 which performs overall control to reproduce desired recorded data from 211. The servo circuit 207 also performs control for moving the optical pickup device 211 to any optical disc mounted on the multi-changer deck 203.

The reproduction signal output from the signal processing circuit 213 is input to the error correction circuit 215, and after the error correction circuit 215 corrects an error generated in the bit stream, the variable transmission rate (hereinafter, " VBR ") It is temporarily stored in the buffer 217. The VBR buffer 217 is used to adjust the data length of a transmitted video signal because it has a variable length. First, the VBR buffer 217 takes the form of a frist in frist out (FIFO).

There is also a navigator 221 that reads video / audio data selected by the user from the data recorded on the optical disc 203 using system data, transmits it at a required speed, and controls the user interface. . Thus, the navigator 221 transmits necessary control data and the like to the microprocessor 209, and also monitors data output from the VBR buffer 217 and transmits the data to be input to necessary circuit units. Take control of your overall back.

The playback signal output from the VBR buffer 217 is input to the video decoding circuit 223 under the control of the navigator 219, the audio data is input to the audio signal processing circuit 227, and Subtitle data is input to the graphics circuit 225.

The video data input to the video decoding circuit 223 by the transmission line control of the navigator 221 is decompressed and decoded and output, and the caption data is output after signal processing is performed in the graphics circuit 225. The audio data is decompressed and decoded by the audio signal processing circuit 227 and output. Typically, video data recorded on a DVD is compressed using the MPEG2 compression algorithm, and audio data is compressed using the Dolby-AC3 compression algorithm.

The video data output from the video decoding circuit 123 and the subtitle data output from the graphics circuit 125 are mixed in a mixer (not shown), input to a digital / analog converter 129 for video, and converted into analog signals. Is output. The video and subtitle data converted into analog signals are converted into broadcast signals by the NTSC / PAL encoder 131 and output.

The audio data output from the audio signal processing circuit 127 is input to the audio digital / analog converter 133, converted into an analog signal, and output through a speaker (not shown).

In addition, jacket picture data containing information on each optical disc and volume information of the corresponding optical disc are reproduced by a user command, and the reproduced jacket picture data is transmitted to each decoding circuit under the control of the navigator 221. do. After compression is decompressed in each decoding circuit, the output signal is converted into a broadcast signal by the NTSC / PAL encoder 231 through the digital / analog converter 229, and then picture in picture (PIP). Input to the device 235. The PIP device 235 is provided with a reference clock unit 232 which provides a clock signal for storing in a jacket memory 234 in synchronization with a predetermined number of clocks so that a plurality of input jacket picture data can be displayed on one screen. And a jacket memory 234 including the one frame memory.

Under the control of the navigator 221, the PIP device 235 outputs jacket picture data stored in the jacket memory 234 through the mixer 237, and simultaneously displays several jacket picture files on one screen. will be.

If the data output of the PIP device 235 is made during any optical disc reproducing operation, the playback signal output through the encoder 231 and the signal output through the PIP device 235 are mixed in the mixer 237. It is also possible to display a jacket picture file on a portion of the screen to be output.

The following describes the operation of the multi-optical disc reproducing apparatus according to the second embodiment of the present invention having the above configuration.

6 is an operation flowchart for reproducing a jacket picture file recorded on a separate optical disc, and storing the jacket picture files in a jacket memory which is one frame memory in synchronization with a predetermined number of clocks.

When the optical disk is mounted on the multi-changer deck 201 capable of mounting a plurality of optical disks, and the optical pickup device 211 is moved to an arbitrary optical disk 203 by a control operation of the microprocessor 209, The pickup device 211 reproduces the data recorded on the arbitrary optical disc 203.

While the operation is being performed, the microprocessor 209 determines whether the optical disk is mounted (step 250 of FIG. 6), and the optical disk 203 currently being reproduced by the optical pickup device 211 when the optical disk is mounted. It is determined whether there is a jacket picture file in step 252 of FIG. 6.

The signal flow until the determination operation is performed in step 252 is as follows. After reading from the optical pickup device 211 and converting it into an electrical signal, the reproduction signal input to the signal processing circuit 213 is input to the error correction circuit 215 after signal processing is performed, and the error correction circuit ( In 215, an error generated in the bit stream is corrected and output. The output reproduction signal is temporarily stored in the VBR buffer 217, and the VBR buffer 217 first outputs data in the input data order.

At this time, the navigator 221 recognizes the presence of a jacket picture file by recognizing the system data from the data output from the VBR buffer 217, and recognizes the position data when the jacket picture file exists. This is because the DVD (optical disk) adopts the UDF file system proposed by ISO9660, which is omitted since it is explained in the first embodiment.

By such an operation, the navigator 221 can know the position of the jacket picture file, and the determined position signal is input to the microprocessor 209. The microprocessor controls the servo circuit 207 so that the optical pickup device 211 tracks the jump to the input position, and the optical pickup device 211 reproduces the information recorded in the located track after the track movement. In other words, the sector containing the jacket picture data is reproduced (step 254 in FIG. 6).

The reproduced data is output through the signal processing unit 213, the error correction circuit 215, and the VBR buffer 217, and the jacket picture data output from the VBR buffer 217 under the control of the navigator 221 is respectively output. It is input to the decoding circuit and decoded. In general, a jacket picture file usually contains only video data and subtitle data (step 256 of FIG. 6).

Accordingly, the data decoded and output by the video decoding circuit 223 and the graphics circuit 225 are mixed and converted into an analog signal, and then input to the NTSC / PAL encoder 231 (step 258 of FIG. 6). The NTSC / PAL encoder converts the input jacket picture data into a broadcast signal and then outputs it to the jacket memory 234 of the PIP device 235. The jacket memory 234 stores the input jacket picture data and the corresponding optical disk volume information in synchronization with a predetermined clock number applied by the reference clock unit 232 (step 260 of FIG. 6).

By the operation so far, the jacket picture file recorded on one optical disk is reproduced and stored. The operation of reproducing and storing the jacket picture file recorded on the next optical disc is also performed by repetition of steps 252 to 260 under the control of the microprocessor 209.

On the other hand, the jacket picture data of the second optical disc converted into the broadcast signal by the NTSC / PAL encoder 231 by the repetition of the steps 252 to 228 is input to the jacket memory 234 in the PIP device 235. After storing the first optical disc jacket picture data, the first optical disc jacket picture data is stored in synchronization with a predetermined number of clocks. That is, the PIP device 235 stores a plurality of jacket picture files reproduced under the control of the navigator 221 in the jacket memory 234 in synchronization with a predetermined clock number (step 260 of FIG. 6).

As described above, after the plurality of jacket picture files are stored in the jacket memory 234 of one PIP device 235, the operation of reproducing the jacket picture files is as follows.

7 is an operation flowchart of displaying a jacket picture file stored in a PIP device.

The jacket picture file display command is executed during any optical disc reproduction operation or in a still picture state or other control operation state. If a user command to play the jacket picture file is input to the navigator 221 through the microprocessor 209 during any optical disc playback operation, the navigator 221 temporarily stops the output operation of the VBR buffer 217. And reproduces the jacket picture file recorded in the PIP device 235.

In more detail, the optical pickup device 111 reads the recorded data from any optical disk mounted on the multi-changer deck 103, and the read data is read by the signal processing circuit 113. After predetermined signal processing such as amplification and phase correction is performed, the signal is input to the error correction circuit 115. The error correction circuit 115 corrects and outputs a sign error generated in the bit stream from the inputted reproduction signal, and the output signal is stored in the VBR buffer 117.

The VBR buffer 117 outputs a stored signal according to a method of first outputting an input signal, and the output signal is input to the video decoding circuit 123. In this process, the navigator 121 recognizes system data in the reproduction signal output from the VBR buffer 117, and converts the recognized system data into the video decoding circuit 123, the graphics circuit 125, and the audio signal processing circuit. Output to (127).

The video decoding circuit 123 extracts only a video signal from the data input from the VBR buffer 117 by using the system data, and then outputs the remaining signals (subtitle signal and audio signal) to the graphics circuit 125. The graphics circuit 125 extracts only the subtitle signal from the input data by using the system data applied by the navigator 121 and outputs the rest signal (audio signal) to the audio signal processing circuit 127.

The video / subtitle data input to each of the decoding circuits is decompressed and output, and the two outputted data are mixed and input to the digital / analog converter 129. After conversion to an analog signal, the NTSC / PAL encoder 131 is converted into a broadcast signal and output. In addition, after the audio signal input to the audio signal processing circuit 127 is signal processed, it is converted into an analog signal and output.

As described above, when a user command to display a jacket picture is input while an arbitrary optical disc playback operation is performed (step 262 of FIG. 7), the navigator 221 reads data stored from the PIP device 235 to store the currently stored memory. It is determined whether there is a jacket picture file (step 264 of FIG. 7).

When there is jacket picture data currently stored in the PIP device 235 by the determining operation of step 264, the output of any optical disc reproduction signal output through the VBR buffer 217 is stopped, and the PIP device 235 The control signal is output to the control unit so as to output the jacket picture data stored therein.

By this control operation, the PIP device 235 outputs jacket picture files stored in the jacket memory 234, and this output signal is displayed on a display device (not shown) through the mixer 237. The displayed state is shown in FIG. That is, FIG. 8 illustrates a state output when four jacket pictures are stored in the jacket memory 234.

In the above jacket picture file display operation, the navigator 221 controls the output of the VBR buffer 217 to temporarily stop the output operation of a playback signal of an optical disc, but the jacket recorded in the PIP device 235 is controlled. It is of course also possible to mix and output the picture file with the playback signal currently being reproduced. In this case, the playback signal converted from the encoder 231 to the broadcast signal and the jacket picture data output from the PIP device 235 are mixed and output from the mixer 237.

The multi-optical disc reproducing apparatus according to the second embodiment of the present invention described above has reproduced the jacket pictures recorded on the plurality of optical discs, and outputs the screen by storing the reproduced jacket pictures in the jacket memory which is one frame memory. The advantage is that multiple jacket picture files can be displayed at one time. In addition, since the information on each disc and the corresponding disc volume are recorded in the jacket picture file in the display state, the user can quickly perform a preparation operation for playback when selecting a specific optical disc.

9 is a block diagram of a multi-optical disc reproducing apparatus according to a third embodiment of the present invention.

9 is a configuration for storing jacket data on a television with a PIP device and displaying the jacket data through a television receiver when necessary. Therefore, in this configuration, the optical disk reproducing apparatus 300 and the television 350 include some components.

Describe the configuration. Reads signals recorded from the multi-changer deck 301 mounted on a plurality of optical disks and rotated by the driving of the motor 305 and any optical disk 303 mounted on the multi-changer deck 301. An optical pickup device 311 for converting and outputting an electrical signal and a signal processing circuit 313 for inputting a reproduction signal from the optical pickup device 311 to perform signal processing such as amplification and phase correction are included.

And an optical pickup apparatus by controlling the servo circuit 307 and the servo circuit 307 and the signal processing circuit 313 to perform tracking and focusing control so that accurate data can be reproduced from the optical pickup apparatus 311. Included is a microprocessor 309 which performs overall control to reproduce the desired record data from 311. At this time, the servo circuit 307 performs the control for moving the optical pickup device 311 to any optical disk mounted on the multi-changer deck 303.

The reproduction signal output from the signal processing circuit 313 is input to the error correction circuit 315, and the error correction circuit 315 corrects the error generated in the bit stream, and then the variable transmission rate (hereinafter referred to as "VBR"). It is temporarily stored in the buffer 317. The VBR buffer 317 is used to adjust the data length of the transmitted video signal because it has a variable length. First, the VBR buffer 317 takes the form of a frist in frist out (FIFO).

There is a navigator 321 which performs a function of reading a video / audio data selected by a user from the data recorded on the optical disc 303 using system data and transmitting it at a required speed and a user interface function. . Thus, the navigator 321 transmits necessary control data and the like to the microprocessor 309, and also performs a control operation for separating data output from the VBR buffer 317.

The playback signal output from the VBR buffer 317 is input to the video decoding circuit 323 under the control of the navigator 319, the audio data is input to the audio signal processing circuit 327, and Subtitle data is input to the graphics circuit 325.

The video data input to the video decoding circuit 323 by the transmission line control of the navigator 321 is decompressed and decoded and output, and the caption data is output after signal processing is performed in the graphics circuit 325. The audio data is decompressed and decoded by the audio signal processing circuit 327 and output. Typically, video data recorded on a DVD is compressed using the MPEG2 compression algorithm, and audio data is compressed using the Dolby-AC3 compression algorithm.

The video data output from the video decoding circuit 323 and the subtitle data output from the graphics circuit 325 are mixed in a mixer (not shown), input to a digital / analog converter 329 for video, and converted into analog signals. Is output. The video and subtitle data converted into analog signals are converted into broadcast signals by the NTSC / PAL encoder 331 and output.

The audio data output from the audio signal processing circuit 327 is input to the audio digital / analog converter 333 and converted into an analog signal and output through a speaker (not shown).

The above configuration is the configuration of the multi-optical disc reproducing apparatus 300. That is, when the video signal output from the NTSC / PAL encoder 331 and the audio signal output through the speaker (not shown) are synchronized and output on the display, a desired optical disc is reproduced.

However, in the present invention, since it is a configuration for outputting jacket picture data using the television 350, the output of the encoder 331 and the output of the digital / analog converter 333 for converting the audio signal into an analog signal are output to the television ( 350). That is, the audio signal will be output through the speaker (not shown) included in the television 350, and the video signal will be output through the mixer 337.

Meanwhile, jacket picture data among video signals output from the encoder 331 of the optical disc reproducing apparatus 300 is input to the picture in picture (PIP) apparatus 335 of the television 350. The PIP device is a general PIP device, and includes a jacket memory 338 and a reference clock unit 336 that are internally configured as one frame memory. In other words, the PIP apparatus stores a plurality of jacket picture data input in one jacket memory 336 and outputs a plurality of jacket picture data on one screen.

And under the control of the microprocessor 341, which performs overall control of the television 350 as well as the PIP apparatus 335, inputs jacket picture data applied from the encoder 331, and converts the stored jacket picture data into a mixer ( 337). The microprocessor 341 is configured to input jacket picture data from the multi-optical disc reproducing apparatus 300 or to output jacket picture data stored in the PIP apparatus 335. The control is performed under the control of the gator 321. Reference numeral 339 denotes a video signal processing unit, and the video signal processing unit is a block for receiving a broadcast signal through an antenna, performing a predetermined signal processing, and outputting the same through the mixer 337.

The following describes the operation of the multi-optical disc reproducing apparatus according to the third embodiment of the present invention according to the above configuration.

10 is an operation flowchart according to a process of storing jacket picture data using a PIP device of a television.

When the optical disc is mounted on the multi-changer deck 301, the multi-optical disc reproducing apparatus 300 reproduces the jacket picture data recorded on each optical disc before the reproducing operation, and transmits the reproduced data to the PIP apparatus 335 of the television. Save it.

The operation is as follows. When the optical disk is mounted on the multi-changer deck 301 capable of mounting a plurality of optical disks, and the optical pickup device 311 is moved to an arbitrary optical disk 303 by a drive signal of the servo circuit 307, The pickup device 311 reproduces the data recorded on the selected optical disc 303.

While the operation is being performed, the microprocessor 309 determines whether the optical disk is mounted (step 360 of FIG. 10), and the optical disk 303 currently being reproduced from the optical pickup device 311 when the optical disk is mounted. It is determined whether there is a jacket picture file in step S3 (step 362 in FIG. 10).

In operation 362, the system data is recognized from the signal reproduced from the optical disc 303 to determine the presence or absence of a jacket picture file, and even position data when the jacket picture file exists. This is because the DVD (optical disk) adopts the UDF file system proposed by ISO9660, which is omitted since it is explained in the first embodiment.

By such an operation, the navigator 321 can know the position of the jacket picture file, and transmits the determined position signal to the microprocessor 309. The microprocessor recognizes that the jacket picture data exists in the optical disc currently being reproduced by this control signal. At this time, the optical pickup device 311 track jumps to the recognized position, and after the tracking focusing adjustment, reproduces the recorded information. In other words, the sector containing the jacket picture data is reproduced (step 364 in FIG. 10).

The reproduced data is output through the signal processor 313, the error correction circuit 315, and the VBR buffer 317, and the navigator 321 outputs jacket picture data output from the VBR buffer 317 to each decoding circuit. Control to be sent to. In general, a jacket picture file usually contains only video data and subtitle data. Therefore, the video decoding circuit 323 and the graphics circuit 325 are decoded and output (step 366 of FIG. 10).

The jacket picture data decoded and output in step 366 of FIG. 10 is mixed and converted into an analog signal, and then input to the NTSC / PAL encoder 331, and then converted to a broadcast signal by the NTSC / PAL encoder. (Step 368 of FIG. 10).

Through this process, the jacket picture data output from the optical disc reproducing apparatus 300 is input to the PIP apparatus 335 of the television 350. At this time, the microprocessor 309 of the optical disc reproducing apparatus 300 notifies the microprocessor 341 of the television 350 that the jacket picture data is currently being output, and controls to store the output data in the PIP apparatus 335. A signal is output (step 370 of FIG. 10).

The microprocessor 341 of the television 350, which has input the control signal in operation 370, applies a signal to the PIP device 335, and outputs a control signal for inputting the jacket picture data being applied to the PIP device 335. 335 stores the input jacket picture data and the corresponding optical disc volume information in the jacket memory 338 in synchronization with a predetermined number of clocks applied by the reference clock unit 336 (step 372 of FIG. 10). When the storage of the input jacket picture data is completed, the microprocessor 341 of the television 350 transmits a storage completion signal to the microprocessor 309 in the optical disc reproducing apparatus 300.

By performing the above process, step 360 to step 372 of FIG. 10, one optical disc jacket picture data mounted on the multi-changer deck 301 is reproduced and stored.

The microprocessor 309 then performs a control operation for reproducing the jacket picture data of the next optical disc. That is, the multi-changer deck 301 is driven to rotate, and at the same time, the control operation for moving the optical pickup device 311 to the next optical disc is performed. Of course, this operation is performed from the servo circuit 307 under the control of the microprocessor 309.

And the subsequent process is made by repeating the step 1036 from step 362 to step 372. That is, the microprocessor 309 controls the operation of reproducing and storing all the jacket picture data of the optical disc mounted on the multi-changer deck 301, and then completes the storing operation according to FIG.

In this process, the jacket picture data inputted to the PIP device 335 of the television 350 in steps 360 through 372 of FIG. 10 are sequentially made of one frame memory. Is stored in synchronization with a predetermined number of clocks, so that a plurality of jacket picture data are stored in the jacket memory of the PIP apparatus 335 as small screen signals.

11 is an operation flowchart for displaying jacket picture data stored in a PIP device of a television.

The microprocessor 309 determines whether a user command to display the jacket picture data has been input during any optical disc reproducing operation or in a still picture state or any other control operation state (step 380 of FIG. 11). ).

When the jacket picture data display command is input in step 380, the microprocessor 309 in the optical pickup device 300 records the jacket picture data recorded in the PIP device 335 in the microprocessor 341 of the television 350. Ask if there are any (Step 382 in Figure 11).

At this time, the microprocessor 341 of the television 350 determines whether there is stored data from the PIP device 335, and when there is stored data, jacket picture data exists in the microprocessor 309 of the optical disc reproducing apparatus 300. Outputs a control signal.

If it is detected in step 382 that there is no jacket picture data, the microprocessor 309 outputs an error message (step 386 of FIG. 11) that no jacket picture data exists. If it is detected in step 382 that the jacket picture data is present, the microprocessor 309 again outputs a control signal for displaying the jacket picture data stored in the microprocessor 341 of the television 350 (see FIG. 11). Step 384).

Then, the microprocessor 341 outputs a data output control signal to the PIP device 335, and the PIP device 335 receives the jacket picture data stored in the jacket memory through the mixer 337 on the receiver (not shown). Display (step 388 in FIG. 11).

As described above, the third embodiment of the present invention is configured to output jacket picture data to a television having a PIP function and to output a plurality of jacket picture data on one screen. Thus, the user can shorten the search time of the optical disc by reproducing the jacket picture data during a specific disc selection operation and selecting any jacket picture data on the display. In addition, the present embodiment has an advantage that the manufacturing cost can be reduced by making the optical disc reproducing apparatus compatible with the television.

12 is a state diagram showing jacket picture data stored in a jacket memory.

That is, by storing the jacket picture data shown in FIG. 12 in the jacket memory 119 constructed in the first embodiment of the present invention, the user stores the title of the jacket memory in a video sound output device (so-called 'karaoke'). It can also be used as wealth.

In the first embodiment of the present invention, the data stored in the jacket memory 119 is recorded with the reproduced jacket picture data and the volume of the corresponding disk. Thus, when the user plays back the jacket picture data stored in the jacket memory, the navigator 121 in charge of the playback operation recognizes the volume of the optical disc containing the reproduced jacket picture data, and the reproduced jacket picture data is used by the user. Is a desired optical disc, the operation of reproducing the corresponding optical disc is subsequently performed. That is, the user can search for a desired optical disc only by playing the jacket picture data stored in the jacket memory 119 to select a specific screen.

Therefore, as shown in FIG. 12, the jacket memory 119 sequentially stores a plurality of volumes, titles, first starting positions of the titles, and the like in the jacket memory 119, and is stored in the jacket memory during the title display command operation. Display the data. If the user selects a desired title by moving the cursor, the navigator 121 recognizes the corresponding optical disc volume, the first starting position of the title, and moves the optical pickup device 11 directly there. By this operation, the music of the desired title is reproduced in the optical pickup device 111, so that the user can easily enjoy the desired song.

In the above process, the process of storing various information according to the jacket picture data in the jacket memory and the process of loading and displaying the stored jacket picture data are the same as the process of the first embodiment of the present invention, and thus the detailed description thereof will be omitted.

As described above, the multi-optical disc reproducing apparatus according to the embodiment of the present invention stores jacket picture data recorded on a plurality of optical discs mounted on the multi-changer deck in the jacket memory, and when the user performs the optical disc selection operation. By searching for the desired optical disc by reproducing the jacket picture data stored in the jacket memory every time, the optical disc search time can be minimized. In addition, by using the jacket memory as the grain of the karaoke, it is possible to widen the use range of the optical disc playback device.

Claims (8)

Reproducing means for reproducing jacket picture data from a plurality of optical discs; memory means for storing jacket picture data output from the reproducing means; and when a jacket picture display command is inputted, controlling output of jacket picture data stored in the memory means. And display means for displaying jacket picture data output from the memory means under the control means and under the control of the control means. The multi-optical disc reproducing apparatus according to claim 1, further comprising decoding means for inputting, decoding and outputting jacket picture data stored in the memory means to the display means. A first step of detecting jacket picture data from a plurality of optical discs, a second step of reproducing the detected jacket picture data, a third step of storing reproduced jacket picture data, and stored jacket picture data according to a user's request And a fifth step of searching for desired jacket picture data from among the fourth step of displaying and the displayed jacket picture data. Reproducing means for reproducing jacket picture data from a plurality of optical discs, memory means for storing a plurality of jacket picture data output from the reproducing means in one frame memory, and a jacket stored in the memory means when a jacket picture display command is input; And a display means for controlling the output of the picture data and a display means for displaying a plurality of jacket picture data output from the memory means on one screen under the control of the control means. 5. The multi-optical disc reproducing apparatus as claimed in claim 4, wherein the memory means uses a picture-in-picture apparatus provided by itself. 5. The multi-optical disc reproducing apparatus according to claim 4, wherein the memory means uses a picture-in-picture device provided in a television. Reproduction means for reproducing signals recorded on a plurality of optical discs; memory means for storing jacket picture data among data output from the reproduction means; decoding means for decoding the reproduction signal output from the reproduction means into an original signal; And control means for controlling the playback signal and the jacket picture data to be mixed and displayed when the jacket picture display command is applied during the optical disc playback operation. A first step of detecting and storing a name, a start position, and an optical disc number of a title recorded on the optical disc; a second step of displaying the stored data by a user's selection; and a third step of selecting specific data from the displayed data; And a fourth step of playing back a title at a corresponding position on the disc in accordance with the selected data.