JP2005353181A - Information processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a data editing function, reduction of power consumption, data protection, and the like, by installing multiple reading heads or recording heads. <P>SOLUTION: A system controller 10 sequentially reads audio data recorded on an optical disk 1 with a second optical pickup 3b, outputs it to a display 21 via a second RF amplifier 5b, a digital signal processing circuit 7, a D/A conversion circuit 12, and outputs it from a not illustrated built-in speaker of the display 21. The system controller 10 sequentially reads, in parallel with that, not continuously recorded still image data recorded in not prescribed positions on the optical disk 1 by a first optical pickup 3a, and saves it sequentially in a hard disk (HD) 15 via a first RF amplifier 5a, the digital signal processing circuit 7. Still image data, saved like this, is read from the hard disk (HD) 15 and displayed on a monitor screen of the display device 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information processing apparatus equipped with two reading heads for reading data from a recording medium or two recording heads for recording data on a recording medium.

  Conventionally, an information processing apparatus equipped with a plurality of read heads has been proposed (see, for example, Patent Document 1 and Patent Document 2).

  In the information processing apparatus (information reproducing apparatus) described in Patent Document 1, while reading data with one reading head, another reading head is moved to a position of data to be read next and is kept in a standby state. Thus, data that is not continuously recorded is continuously reproduced using two reading heads.

An information processing device (disc playback device) described in Patent Document 2 is for individually controlling pickups provided independently for both sides of data playback on a double-sided optical disc, and is currently playing a scene. The data to be reproduced next is prefetched by one data buffer, and during the reproduction output period of the prefetched multi-scene data, the multi-scene data following that data is read and the main scene data is switched to the multi-scene data. The seek and the motor rotation speed are changed.
Japanese Unexamined Patent Publication No. 7-320380 JP-A-8-287469

  According to the information processing apparatus of Patent Document 1, the access speed can be improved. Further, according to the information processing apparatus of Patent Document 2, it is possible to extend the data reproduction time including multi-scenes for each disk set.

  However, although the conventional information processing apparatus is equipped with two reading heads, only one function such as improvement of access speed and extension of data reproduction time is realized. There was a problem that the head was not fully utilized on the other side.

  The present invention was devised to solve such problems. The purpose of the present invention is to install a plurality of reading heads or recording heads to reduce data editing functions, power consumption, data protection, etc. An object of the present invention is to provide an information processing apparatus that can sufficiently exhibit its functions in the direction.

  In order to solve the above-described problem, an information processing apparatus according to the present invention includes a still image that is one piece of data in an information processing apparatus including two read heads that read data from a recording medium on which a plurality of types of data is recorded. There is provided control means for reading data with the first reading head, reading sound data as another data with the second reading head, editing the two read data and outputting them to the output means. It is characterized by.

  More specifically, the control means displays the read still image on the monitor screen which is the output means and reproduces the sound data while switching the display and outputs it from the speaker which is the output means. You may comprise as follows.

  In this way, by editing still image data and sound data, displaying the still image on the monitor screen, and outputting sound data from the speaker, for example, playback of still images and music of a favorite group of artists is performed. For example, music can be played back as usual, and still images can be edited to suit the user's preference, such as displaying still images showing a specific individual in the group on the monitor screen. It becomes possible.

  Further, according to the present invention, during the repeat reproduction, the control means displays a still image read by the first read head on the monitor screen when reproduction by the second read head approaches the end position of repeat reproduction. In the displayed state, the first read head is sought to the start position of repeat playback to start prefetching of sound data, so that sound data is played back by the first read head during the next playback, You may comprise so that switching control of a head may be performed so that a still image may be reproduced | regenerated with a reading head.

  Thus, during repeat playback, when playback by the second read head approaches the end position of repeat playback, the first read head is sought to start prefetching of sound data, and the second read head is This time, by switching from sound data reproduction to still image data reproduction, the seek time can be shortened, and skipping of the sound data and still image data can be eliminated and smooth repeat reproduction can be performed.

  Further, according to the present invention, the control means is configured to alternately repeat the reading operation and the seek operation between the first reading head and the second reading head when executing the fast forward or rewind mode. May be. Thereby, stable fast-forwarding or rewinding can be performed.

  Further, the information processing apparatus of the present invention is reading and reproducing the first layer data with the first reading head in the information processing apparatus having two reading heads for reading data from the recording medium of the two-layer recording system. At the same time, the second layer data is read by the second reading head and sequentially stored in the storage means, and the second layer data stored in the storage means is reproduced at the time of reproduction of the second layer. It is said.

  As described above, according to the present invention, at the same time as the reproduction of the first layer is finished, the stored second layer data is reproduced, thereby eliminating sound skipping and image skipping during layer switching. it can. Further, since the rotation of the disk, which is a recording medium, can be stopped during data reproduction of the second layer, power consumption can be suppressed.

  In the information processing apparatus of the present invention, when data is overwritten on a rewritable recording medium in an information processing apparatus having two recording heads, the data recorded on the recording medium by the first recording head The data is overwritten on the recording medium by the second recording head while reading out and storing in the storage means. And when overwriting fails, the original data preserve | saved at the said memory | storage means are read, and it is comprised so that it may overwrite on the said recording medium. Thereby, even when data writing fails, the state of the recording medium can be returned to the original data state at worst.

  According to the information processing apparatus of the present invention, still image data and sound data are edited, the still image is displayed on the monitor screen, and the sound data is output from the speaker. When playing video and music, for example, music is played as usual, and for still images, a still image showing a specific individual in the group is displayed on the monitor screen. You can make edits that match. Further, according to the present invention, during repeat reproduction, when reproduction by the second read head approaches the end position of repeat reproduction, the first read head is sought to start prefetching of sound data, and the second By switching the reading head from sound data reproduction to still image data reproduction, the seek time can be shortened, and skipping of the sound data and still image data can be eliminated and smooth repeat reproduction can be performed. Can do. Furthermore, according to the present invention, when the fast-forward or rewind mode is executed, stable fast-forward or rewind is performed by alternately repeating the reading operation and the seek operation between the first reading head and the second reading head. A return can be made.

  According to the information processing apparatus of the present invention, the first layer data is read and reproduced by the first reading head, and simultaneously the second layer data is read by the second reading head and sequentially stored in the storage means. Since the second layer data stored in the storage means is reproduced when reproducing the second layer, it is possible to eliminate sound skipping and image skipping during layer switching. Further, since the rotation of the disk, which is a recording medium, can be stopped during data reproduction of the second layer, power consumption can be suppressed.

  According to the information processing apparatus of the present invention, when data is overwritten on a rewritable recording medium, the first recording head reads the data recorded on the recording medium and saves it in the storage means. When overwriting fails on the recording medium by overwriting the recording medium with the recording head of No. 2, the original data stored in the storage means is read and overwritten on the recording medium, so that the state of the recording medium is at worst. The original data can be restored.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a system configuration of a DVD apparatus which is an information processing apparatus of the present invention.

  Outputs of the first and second optical pickups 3a and 3b for writing data to the loaded optical disk 1 and reading data from the optical disk 1 are respectively sent through first and second RF amplifiers 5a and 5b provided corresponding to the respective optical pickups. The output of the digital signal processing circuit 7 is connected to a laser driver 8 that controls the laser output at the time of data writing and reading by the optical pickups 3a and 3b. The output of the servo processing circuit 9 is connected to a feed motor 4 for moving the optical pickups 3a and 3b in the radial direction of the optical disc 1 and a spindle motor 2 for rotationally driving the optical disc 1, and these digital signals. The processing circuit 7 and the servo processing circuit 9 are bidirectionally connected to a system controller 10 that controls the operation of the entire apparatus.

  The digital signal processing circuit 7 is connected to a DRAM 6 as a buffer for temporarily storing data during a recording operation and a reproducing operation. The digital signal processing circuit 7 converts the digital data into analog data and displays a display device such as a CRT. A D / A conversion circuit 12 for output to the terminal 21 is connected. In addition, a hard disk (HD) 15 for storing data mainly read from the optical disc 1 is bidirectionally connected to the digital signal processing circuit 7. Further, a tuner circuit (BS tuner, CS tuner, etc.) 16 that receives a digital television broadcast signal is connected to the digital signal processing circuit 7.

  The system controller 10 is bi-directionally connected to an EEPROM 11 for storing unique information such as parameters of the optical disc 1 and laser power parameters, and a receiving unit 14 that receives an infrared signal from the remote controller 18. It is connected. The system controller 10 is connected to a display panel 13 made of an LCD or the like provided on the front surface of the apparatus main body.

  The digital signal processing circuit 7 has a function of individually processing the data read by the first optical pickup 3a and the second optical pickup 3b, and is based on EFM demodulation or ACIRC (Advanced Cross Interleaved Reed-Solomon Code). In accordance with the error correction method, processing such as dividing a 16-bit signal into 8 bits and converting the 8 bits into 14 bits is performed. Further, the digital signal processing circuit 7 performs voice decompression processing on the demodulated audio data and outputs it to the D / A conversion circuit 12. The D / A conversion circuit 12 converts the audio data subjected to the voice expansion processing into an analog signal and outputs it. The digital signal processing circuit 7 performs processing such as data compression for writing the digital television broadcast signal received by the tuner circuit 16 to the optical disc 1.

  Although not shown, the system controller 10 includes a CPU, a ROM, a RAM, and the like, and individually controls the first optical pickup 3a and the second optical pickup 3b to execute various processes described later. . A program for executing these processes is stored in advance in the ROM, and the system controller 10 develops a program read from the ROM on the RAM and executes the process when each process is executed.

  Next, examples of various processing operations using the first optical pickup 3a and the second optical pickup 3b in the DVD apparatus having the above configuration will be described.

  In the first embodiment, each data is read from the multi-session optical disc 1 on which a plurality of types of data are recorded using the first optical pickup 3a and the second optical pickup 3b, and the read data is edited and displayed. This is an embodiment in which output is performed from a speaker (not shown) built in the device 21 or the display device 21. Here, in the first embodiment, a case where one piece of data recorded on the optical disc 1 is still image data and the other piece of data is sound data (audio data) will be described. In other words, this is an embodiment in which an artist's music is played along with the artist's still image. This will be described below with reference to the flowchart shown in FIG.

  When the optical disc 1 is loaded, the system controller 10 first reads the disc information written in the lead-in area of the optical disc 1 with any optical disc (for example, the first optical disc 13a), and then reads the DRAM 6 (the EEPROM 11 may be used). (Step S1). Thereafter, the system controller 10 controls the reproducing operation of the optical disc 1 using the first optical pickup 3a and the second optical pickup 3b based on the disc information stored in the DRAM 6 (steps S2 and S6).

  That is, the system controller 10 sequentially reads the audio data recorded on the optical disc 1 with the second optical pickup 3b, amplifies it with the second RF amplifier 5b, and inputs it to the digital signal processing circuit 7 (step S2). In the digital signal processing circuit 7, the audio data input from the second RF amplifier 5 b is temporarily stored in the DRAM 6, then read out again from the DRAM 6, subjected to various processes and demodulated (step S 3), and the demodulated audio data is then read out. The voice is decompressed and output to the D / A conversion circuit 12. The D / A conversion circuit 12 converts the audio data subjected to the voice expansion processing into an analog signal, outputs the analog signal to the display device 21, and outputs it from a built-in speaker (not shown) of the display device 21 (step S4). The system controller 10 repeats such processing (steps S2 to S4) until the end of the performance (until determined as Yes in step S5).

  On the other hand, in parallel with this, the system controller 10 sequentially reads still image data recorded at an arbitrary position on the optical disc 1 by the first optical pickup 3a and amplifies it by the first RF amplifier 5a. Then, it is input to the digital signal processing circuit 7 (step S6). The digital signal processing circuit 7 performs various processes on the still image data input from the first RF amplifier 5a and demodulates it, and then stores the demodulated still image data in the hard disk (HD) 15 sequentially (step S7). Then, the stored still image data is read from the hard disk (HD) 15, converted into an analog signal by the D / A conversion circuit 12, output to the display device 21, and displayed on the monitor screen of the display device 21. (Step S8).

  Here, which data to be read out of the still image data recorded on the optical disc 1 can be set by the user. For example, if the artist is a group of C, D, and E3, and the user particularly likes the artist D, for example, the remote controller 18 is used to display the artist D as still image data to be reproduced. Specify a still image. As a result, the system controller 10 extracts the position of the still image data showing the designated artist D from the disk information stored in the DRAM 6, sequentially reads the still image data based on the position data, and the hard disk ( HD) 15 sequentially. Then, the stored still image data is reproduced while being switched sequentially (every time determined to be Yes in step S9) at predetermined time (for example, 10 seconds) (step S10) and displayed on the monitor screen. (Step S8).

  Here, it is assumed that the artist name (C, D, E) and the still image data are stored in the disc information of the optical disc 1 in association with each other, and the system controller 10 reads from the optical disc 1 when the disc is installed. Based on this disc information stored in the DRAM 6, the above reproduction processing according to the user setting is executed. On the other hand, such processing (steps S8 to S10) is repeated until the end of the performance (until determined as Yes in step S11).

  With such a process, when the user is playing back still images and music of an artist of a favorite group, the music is played as usual, and the still image is a specific individual (for example, D) in the group. It is possible to perform editing that suits the user's preferences, such as displaying still images on which the artist is shown on the monitor screen while switching sequentially.

  The second embodiment is an embodiment in which, for example, the user operates the remote controller 18 to instruct AB repeat reproduction while performing the reproduction operation as in the first embodiment. This will be described below with reference to the flowchart shown in FIG.

  That is, the audio data recorded on the optical disc 1 is sequentially read by the second optical pickup 3b, and the still image data not continuously recorded recorded at an arbitrary position on the optical disc 1 is read by the first optical pickup 3a. In the state, when an AB repeat playback instruction is input via the receiving unit 14, the system controller 10 determines whether or not the playback of audio data by the second optical pickup 3b has approached the end position of repeat playback ( Step S21).

  As a result, when the reproduction of audio data by the second optical pickup 3b approaches the end position of repeat reproduction (when it is determined Yes in step S21), the hard disk (HD) is read by the first optical pickup 3a at that time. 15 is displayed on the monitor screen of the display device 21 (step S22), the first optical pickup 3a is sought to the repeat playback start position (step S23), and the audio data is prefetched. Start (step S24).

  When the second optical pickup 3b finishes the reproduction to the end position of repeat reproduction (when it is determined Yes in step S25), the reproduction of the audio data prefetched by the first optical pickup 3a is started (step S25). S26). Thereafter, the first optical pickup 3a serves as an audio data reproducing head.

  On the other hand, the second optical pickup 3b that has finished reproducing to the end position of repeat reproduction ends reproduction of the audio data at this point, and then proceeds to a still image data reproduction operation (step S27).

  That is, the system controller 10 switches the first optical pickup 3a from the reproduction of the still image data to the reproduction of the audio data when the repeat reproduction of the audio data reaches near the end position of the repeat reproduction, and at the end of the repeat reproduction. When reproduction to the position is completed, the second optical pickup 3b is switched from reproduction of audio data to reproduction of still image data. In this way, repeat reproduction is performed, and when reproduction to the end position of repeat reproduction is completed again, the first optical pickup 3a is switched again from reproduction of audio data to reproduction of still image data, and the second optical pickup. 3b is switched from reproduction of still image data to reproduction of audio data.

  In the second embodiment, such a head switching process is performed every time repeat reproduction is repeated. As a result, the seek time from A to B during repeat playback can be shortened, and skipping of data between audio data and still image data can be eliminated, and smooth repeat playback can be performed.

  The third embodiment is an embodiment in which, for example, the user operates the remote controller 18 to instruct fast-forward or rewind playback while performing the playback operation as in the first embodiment.

  That is, the audio data recorded on the optical disc 1 is sequentially read by the second optical pickup 3b, and the still image data not continuously recorded recorded at an arbitrary position on the optical disc 1 is read by the first optical pickup 3a. In the state, when a fast-forward or rewind playback instruction is input via the receiving unit 14, the system controller 10 performs fast-forward playback or rewind playback based on this instruction. In this case, for fast-forward playback or rewind playback of audio data, playback processing is performed in the same manner as in the past. On the other hand, still image data is implemented in substantially the same manner as audio data playback processing. For example, when the normal playback order of still image data is still images m1, m2, m3, m4,..., M10,..., For example, in fast-forward playback at double speed, still images m1, m3, m5 ,... Are skipped one by one, and at the time of fast forward playback at 3 times speed, still images m1, m4, m7,. In the case of rewind playback, the explanation is omitted, but it is exactly the same as in the case of fast forward playback. As a result, even when audio data and still image data are being played back simultaneously, fast-forward playback or rewind playback can be stably performed.

  In the fourth embodiment, the optical disc 1 is a two-layer disc, and the second layer data is reproduced after the first layer data is reproduced.

  That is, during reading and reproduction of the first layer data recorded on the optical disc 1 by the first optical pickup 3a, the second layer data of the optical disc 1 is simultaneously read by the second optical pickup 3b, and this data is read from the hard disk (HD). 15 to save sequentially. As a result, when the reproduction of the first layer data is completed, the second layer data is also read by the second optical pickup 3b, and all of the data is stored in the hard disk (HD) 15. Therefore, after reproducing the first layer data, the second layer data stored in the hard disk (HD) 15 is reproduced for reproducing the second layer data. As a result, it is possible to eliminate sound skipping and image skipping when switching between layers. Further, in the fourth embodiment, the rotation driving of the optical disc 1 and the operations of the first and second optical pickups 3a and 3b can be stopped at the time of data reproduction of the second layer, so that power consumption can be suppressed.

  The fifth embodiment is an embodiment in which data is overwritten on the rewritable optical disc 1.

  That is, when recording data by overwriting, the system controller 10 reads the data recorded on the optical disc 1 with the first optical pickup 3 a and sequentially stores it on the hard disk (HD) 15. In parallel with this reading operation, new data is overwritten on the optical disk 1 by the second optical pickup 3b. Here, when overwriting fails, the system controller 10 reads the original data stored in the hard disk (HD) 15 and overwrites the optical disk 1 again. As a result, even if overwriting fails, the optical disk 1 can be returned to the original data state in the worst case.

1 is a system configuration diagram of a DVD apparatus that is an information processing apparatus of the present invention. FIG. 3 is a flowchart for explaining a processing operation of the first embodiment. 10 is a flowchart for explaining a processing operation according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk 2 Spindle motor 3a 1st optical pick-up (1st reading head)
3b Second optical pickup (second reading head)
4 Feed motor 5a First RF amplifier 5b Second RF amplifier 6 DRAM (memory buffer)
7 Digital signal processing circuit 8 Laser driver 9 Servo processing circuit 10 System controller 11 EEPROM (memory)
12 D / A conversion circuit 13 Display panel 14 Receiver 15 Hard disk (storage means)
16 tuner circuit 18 remote control 21 display device

Claims (8)

In an information processing apparatus equipped with two reading heads for reading data from a recording medium on which a plurality of types of data are recorded,
The still image data that is one data is read by the first reading head, the sound data that is another data is read by the second reading head, and the two read data are edited and output to the output means. Control means to
While the control means displays the read still image on the monitor screen as the output means and performs display switching, the sound data is reproduced and output from the speaker as the output means. When playback by the second read head approaches the end position of repeat playback, the first read head is used for repeat playback while the still image read by the first read head is displayed on the monitor screen. The head is switched so that the sound data is reproduced by the first reading head and the still image is reproduced by the second reading head in the next reproduction by seeking to the start position and starting the pre-reading of the sound data. When performing control and performing fast forward or rewind mode, the first read head and the first read head In the read head, the information processing apparatus characterized by repeating alternately the reading operation and seek operation. In an information processing apparatus equipped with a plurality of read heads for reading data from a recording medium on which a plurality of types of data is recorded,
It is characterized by comprising control means for reading one data with one reading head, reading another data with another reading head, editing the two read data and outputting them to an output means. Information processing device.   When the one data is still image data and the other data is sound data, the control means displays the read still image on the monitor screen as the output means and switches the display. The information processing apparatus according to claim 2, wherein the sound data is reproduced and output from a speaker as the output unit.   In the repeat reproduction, when the reproduction by the other reading head approaches the end position of the repeat reproduction, the control means displays the still image read by the one reading head on the monitor screen, By making the reading head seek to the start position of repeat playback and starting pre-reading of sound data, at the next playback, the sound data is played back by the one reading head and the still image is played back by the other reading head. 4. The information processing apparatus according to claim 3, wherein the head is switched.   3. The control device according to claim 2, wherein when the fast-forward or rewind mode is executed, the control unit alternately repeats a reading operation and a seek operation between the one reading head and the other reading head. 3. The information processing apparatus according to 3. In an information processing apparatus equipped with two read heads for reading data from a two-layer recording type recording medium,
At the same time that the first layer data is read and reproduced by the first reading head, the second layer data is read by the second reading head and sequentially stored in the storage means, and stored in the storage means during the second layer reproduction. An information processing apparatus that reproduces the second layer of data. In an information processing apparatus equipped with two recording heads,
When overwriting data on a rewritable recording medium, the data recorded on the recording medium is read by the first recording head and stored in the storage means while the data is recorded on the recording medium by the second recording head. An information processing apparatus characterized by overwriting.   8. The information processing apparatus according to claim 7, wherein when overwriting fails, original data stored in the storage unit is read and overwritten on the recording medium.