KR20040061932A - Record medium player capable of random playing and method thereof - Google Patents

Abstract

PURPOSE: A recording medium reproduction apparatus capable of performing a random reproduction process and a method therefor are provided to redrive a random number generator to generate new random number data if random number data is the same as recorded random number data, and to reproduce music data according to the new random number data, thereby preventing recorded songs from being reproduced in the same reproduction order. CONSTITUTION: An input portion(20) inputs a random reproduction command from a user. A pickup device(10) reads data from a recording medium(5). An HDD(Hard Disk Drive)(30) records random number data generated to randomly reproduce music data recorded on the recording medium(5). A random number generator(52) generates a random number that determines a reproduction order of the music data. A controller(50) drives the random number generator(52) if the random reproduction command is inputted, redrives the generator(52) if the generated random number data is the same as the recorded random number data, and reproduces the music data according to the random number data.

Description

Record medium player capable of random playback and method {Record medium player capable of random playing and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reproducing apparatus and a control method thereof, and more particularly, to a recording medium reproducing apparatus and a reproducing method capable of randomly reproducing a plurality of pieces of music data recorded on a recording medium without duplication.

In the case of single-sided recording, a recording medium such as a DVD (Digital Versatile Disk) can store 4.7 GB of data, and this storage capacity can record one high-quality movie along with various additional information. In addition, when storing music data, hundreds of pieces of music data can be stored.

The DVD player that plays the above DVD discs is designed to play CDs (Compact Disks) and other recording media in the form of discs. Audio / Video signals are coming in combination with a large hard disk drive that can store audio and video signals. In addition, devices in the form of a composite device, which are further combined with a TV tuner that can share the AV signal processing blocks of the DVD player, have also been released.

On the other hand, the DVD player as described above, when the user selects a random mode when playing music CDs or DVDs, the songs are stored in random order without overlapping each other even if the user does not have to edit the songs on the disc. It was designed to be played so that the user could listen to the songs at random.

However, in the conventional recording medium reproducing apparatus such as the above DVD reproducing apparatus, when the user selects the random mode again after canceling the random mode, the previous random mode is not stored because the data for the previous random reproducing sequence is not stored. There was a problem that the songs that were played in Duplicate were reproduced, making the user's random play selection meaningless. That is, if the user selects a random mode, the system is designed to generate random numbers to prevent duplication of songs, but when the random mode is released, the data for the random mode is initialized to select the same random mode. When generating random numbers, the same songs are repeatedly listened to. In particular, in the case of a recording medium in which a large number of songs such as a DVD are recorded, playback is often interrupted because the user rarely listens to all the songs. As a result, the songs I listened to previously had the feeling of being played repeatedly, which made it difficult to select random play again.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording medium reproducing apparatus and a random reproducing method which can prevent the reproducing procedure of the previous random reproducing when the random reproducing is selected to solve the above problems.

1 is a block diagram of a recording medium reproducing apparatus according to the present invention;

2 is a block diagram of a DVD player and a TV tuner combined type device according to an embodiment of the present invention; and

FIG. 3 is a flowchart illustrating a random recording operation of a recording medium of the composite device shown in FIG. 2.

* Description of the symbols for the main parts of the drawings *

10: recording medium reading unit 20: input unit

30, 136: HDD (Hard Disk Drive) 40: Output

50: control unit 110: DVD playback unit

112: DVD disc 114: DVD DSP

116: DVD decoder 118: DVD control unit

120: input panel unit 130: HDD recording and playback unit

131: TV tuner 140: Input and output selector

150: host controller 152: random number generator

The recording medium reproducing apparatus of the present invention for achieving the above object comprises an input unit for receiving a random reproduction command from the user; A recording medium reading unit for reading data from the recording medium; A hard disk drive on which random number data generated to be randomly reproduced for music data recorded on the recording medium is recorded; A random number generator for generating a random number for determining a reproduction order of music data recorded on the recording medium; And when the random play command is input to the music data recorded on the combined recording medium, the random number generator is driven, and the random number data generated by the random number generator is recorded on the hard disk drive. And a control unit which re-drives the random number generator and reproduces the music data recorded on the recording medium according to the random number data generated by the random number generator re-driving.

When the music data is reproduced according to the random number data, the controller stores the random number data in the hard disk drive.

On the other hand, when the random number data is generated through the random number generator, the controller generates an identifier according to the recording medium for the generated random number data, and adds the identifier as a file name to be stored in the hard disk drive. If the same file name as the identifier newly generated according to the recording medium does not exist in the hard disk drive, the control unit may reproduce music data recorded on the recording medium according to the random number data generated by the random number generator. do.

In the random reproducing method of the present invention for achieving the above object, in the random reproducing method of the recording medium of the recording medium reproducing apparatus combined with a hard disk drive, a random reproducing command is input to the music data contained in the combined recording medium; Generating random number data for determining a reproduction order of music data; Comparing random number data generated in the random number data generation step with random number data corresponding to a recording medium recorded on the hard disk drive; Regenerating random number data if the generated random number data and the random number data recorded on the hard disk drive are the same as a result of the comparison; And reproducing the music data recorded on the recording medium according to the reproduced random number data.

The recording medium random reproduction method may further include storing the reproduced random number data on the hard disk drive when music data is reproduced according to the reproduced random number data.

The random recording method of the recording medium may further include generating an identifier according to the recording medium when the random data is generated, and storing the generated random data on the hard disk drive. An identifier is added as a file name to be stored in the hard disk drive.

The method for randomly reproducing the recording medium may further include: searching whether the same file name as the identifier generated according to the recording medium exists in the hard disk drive; and reproducing the music data includes: If the same file name as the identifier generated according to the recording medium does not exist in the hard disk drive, the music data contained in the recording medium is reproduced according to the random number data newly generated by the random number generator.

According to the recording medium reproducing apparatus and method of the present invention as described above, after the random reproduction of the recording medium is released by the user, even if the random reproducing command is selected, the songs contained in the recording medium are not reproduced in the same playback order. .

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

1 is a block diagram of a recording medium reproducing apparatus according to the present invention. The recording medium reproducing apparatus includes a recording medium reading unit 10, an input unit 20, a hard disk drive 30, an output unit 40, and a control unit 50.

The recording medium reading unit 10 detects the combination of the recording medium 5 and transmits the same to the control unit 50, and reads data from the recording medium 5 coupled under the control of the control unit 50.

The input unit 20 receives a command related to the reproduction of the recording medium 5 and the reproduction mode selection from the user. The input unit 20 may be a remote controller (hereinafter referred to as a remote controller) and may be a key input unit generating a command input signal in response to a user's direct key input. It may be a voice input unit for generating a command input signal The playback mode selection related commands include sequential playback commands, random playback commands, fast search commands, and the like.

In the hard disk drive 30, random number data generated to be randomly reproduced for music data contained in a recording medium is added with an identifier corresponding to the recording medium as a file name.

The output unit 40 includes a speaker (not shown) for outputting a reproduction signal read out from the recording medium 5 and a liquid crystal display (LCD) for displaying a recording medium reproduction mode ordered by a user under the control of the control unit 50. Include.

The control unit 50 includes a random number generator for generating a random number for determining the reproduction order of the music data contained in the recording medium, and controls the entire system according to the contents programmed therein. In particular, when the random play command is input through the input unit 20 with respect to the music data contained in the currently combined recording medium 5, the controller 50 generates the random number data and the hard disk drive generated by the random number generator 52. If the random number data recorded at 30 is the same, the recording medium reading unit 10 is controlled such that the music data recorded on the recording medium is reproduced according to the random number data generated by driving the random number generator 52 again. Here, the random number generator 52 may be software included in the operating system of the controller 50, it may be configured as a separate hardware from the controller 50.

In the recording medium reproducing apparatus as described above, when the recording medium 5 is coupled to the apparatus, the control unit 50 obtains basic information including identification information of the recording medium 5 through the recording medium reading unit 10. The basic information includes the name of the recording medium (for example, the title name of the DVD), the file name of the recorded music data, the size of each file, the total number of files, and the like.

Thereafter, when a random play command is input from the user through the input unit 20, the controller 50 generates random number data for random reproduction of music data recorded through the random number generator 52, and generates an identifier according to the recording medium. do. In the case of a DVD, the identifier may be a title name, and the name of the song recorded in the first track may be used as the identifier. The identifier may also use a unique number recorded on the recording medium.

Next, the controller 50 searches whether the same file name as the identifier generated according to the combined recording medium 5 exists in the hard disk drive 30. At this time, if the identifier corresponding to the combined recording medium is present in the hard disk drive 30, the controller 50 reads the random number data in the file having the same file name as the identifier random number data generated by the random number generator 52 Compare with As a result of the comparison, if the two random number data are the same, the random number generator 52 is restarted to control the reproduction operation of the recording medium reading unit 10 according to the random number data different from the random number data stored in the hard disk drive 30. Thereafter, when the reproduction of the music data is started according to the newly generated random number data, the controller 50 updates the random number data file according to the recording medium recorded on the hard disk drive with the newly generated random number data.

Accordingly, the recording medium reproducing apparatus can randomly reproduce the music data recorded on the recording medium in a reproduction order different from the previous random reproduction order.

2 is a block diagram of a composite apparatus in which a DVD player and a TV tuner are combined according to an exemplary embodiment of the present invention. The composite apparatus includes a DVD playback unit 110, an input panel unit 120, an HDD 136, a TV tuner 131, an HDD recording and playback unit 130, an input / output selection unit 140, and a host control unit 150. It includes.

The input panel unit 120 includes a remote controller 124, a key input unit 122, and a function display 126.

The DVD player 110 includes a DVD DSP 114 for outputting a pure DVD stream by removing additional data for error correction and data other than a pure digital signal from digital data picked up from the DVD disc 112, and a DVD DSP. A DVD decoder 116 for decoding the DVD bitstream output from 114 and outputting analog video and audio signals, and a DVD controller 118 for controlling the DVD player 110. The DVD player 110 may play a video CD and an audio CD in addition to a DVD title. The DVD decoder 116 is usually made of a one-chip integrated circuit (IC). In the one-chip IC, an MPEG2 decoder (not shown), an NTSC / PAL encoder (not shown) for converting digital video data into an analog video signal, and an A / D converter (not shown) for converting digital audio data into an analog audio signal are provided. Is built. However, NTSC / PAL encoders and A / D converters can be installed outside the IC, depending on the IC.

The HDD (Hard Disk Drive) recording / reproducing unit 130 converts the input analog video and audio signals into digital data, compresses them to MPEG standard, and stores them in the HDD 136. Also, digital video and audio data are read from the HDD 136 and played back. To this end, the HDD recording and playback unit 130 converts the analog video and audio signals received through the TV tuner 131 or the external input terminal 144 into digital video data and audio data, respectively. And the compressed data through the MPEG encoder 134 and the MPEG encoder 134 which compress the digital video and audio data converted by the audio A / D converter 133 and the video and audio A / D converter 132 and 133. Adds an error correction code to the HDD 136, reads the compressed data stored from the HDD 136, and outputs the pure compressed data through error correction to the HDD DSP 135 and the HDD DSP 135. NTSC / PAL encoder which converts the video stream output through the MPEG decoder 137 and the MPEG decoder 137 to restore the digital compressed video and audio data read out through 139 And an audio D / A converter 138 for converting the audio stream output through the MPEG decoder 137 into an analog signal. The HDD recording and playback unit 130 as described above is configured to perform compression through the MPEG encoder 134, but another compression processor may be used.

In the input / output selector 140, the input selector 144 selectively receives analog video signals and audio signals input from various external devices (not shown). In addition, according to the system, a separate digital interface (not shown) may be provided to interface digital data with an external device (not shown). The output selector 142 selectively outputs analog video signals and audio signals reproduced from the DVD disc 112 and analog video signals and audio signals reproduced from the HDD 136.

The host control unit 150 controls the overall system. In particular, when the DVD disc 112 is coupled, if a random play command is input to the combined disc from the user, the host controller 150 generates random data through the random number generator 152. When the playback order is the same as the previous random playback, new random number data is generated, and the DVD controller 118 is controlled to perform random playback of the recording medium according to the new random number data.

3 is a flowchart illustrating a random reproduction method of the composite device shown in FIG. 2. When the DVD disc 112 is combined, the host controller 150 obtains basic information of the combined DVD title. Then, when a random play command is input through the input unit 120 (S310), the random number generator 152 is input. Generate a random number through (S320). Thereafter, the HDD 136 is searched through the HDD DSP 135 to see if a file name such as a DVD title name exists.

As a result of the search, if the same file name as the title name of the combined DVD is present in the HDD 136 (S330), the host controller 150 displays the file information of the same file name as the title name of the DVD, that is, the previous random of the currently combined DVD 112. The random number data used for reproduction is read out from the HDD 136, and the random number data read out from the HDD 136 is compared with the random number data generated by the random number generator 152 (S340). When the comparison result is the same, the host controller 150 instructs the random number generator 152 to generate random number data again (S320), and compares the generated random number data with the random number data read from the HDD 136 again. Repeat (S340).

Next, when the random number data read from the HDD 136 and the random number data generated by the random number generator 152 are different from each other by repeating the above comparison process, the music data recorded on the DVD 112 is played according to the generated random number data. The control signal is transmitted to the DVD controller 118 so as to be possible. Then, the DVD controller 118 drives the spindle motor (not shown), locates the pickup device (not shown) on the track according to the random number data, and randomly reads the music data (S350).

Thereafter, when the host controller 150 receives a signal for the music data reproduction operation from the DVD controller 118, the host controller 150 stores the newly generated random number data in the HDD 136 (S360).

In the above embodiment, a DVD player and a TV tuner are combined as an example, but the idea of the present invention can be applied to a single playback device and various complex devices, and can be applied to various recording media as well as a DVD disc. have. The present invention can also be applied to video CDs, audio CDs, MP3 discs, and the like that can be played on a DVD player. Further, in the embodiment, the random number data is stored in the hard disk drive, but the hard disk drive is not necessarily used, and it is also possible to use a nonvolatile memory such as an EEPROM or a flash memory.

According to the recording medium reproducing apparatus and the random reproducing method of the present invention as described above, the previous random reproducing sequence is repeated even if the recording medium is separated and recombined by the user, or after the random release, the random reproducing mode is selected again. It is possible to prevent the user does not feel bored, it is possible to eliminate the trouble of re-operation by repetition of the same playback order.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the general knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone with a variety of variations will be possible.

Claims (8)

An input unit for receiving a random play command from a user; A recording medium reading unit for reading data from the recording medium; A hard disk drive on which random number data generated to be randomly reproduced for music data recorded on the recording medium is recorded; A random number generator for generating a random number for determining a reproduction order of music data recorded on the recording medium; And When the random play command is input to the music data recorded on the combined recording medium through the input unit, the random number generator is driven, and the random number data generated by the random number generator is generated from the random number data recorded on the hard disk drive. If the same, the control unit for restarting the random number generator, and reproduces the music data recorded on the recording medium according to the random number data generated by the random number generator re-driven. The method of claim 1, And the controller stores the random number data in the hard disk drive when music data is reproduced according to the random number data. The method of claim 2, And the controller generates an identifier according to the recording medium with respect to the random number data generated by the random number generator, adds the identifier as a file name, and stores the identifier in the hard disk drive. The method of claim 3, wherein If the file name identical to the identifier newly generated according to the recording medium does not exist in the hard disk drive, the controller is further configured to play music data recorded on the recording medium according to the random number data generated by the random number generator. And a recording medium reproducing apparatus. A recording medium reproducing method of a recording medium reproducing apparatus combined with a hard disk drive, Generating random number data for determining a reproduction order of music data when a random play command is input to the music data contained in the combined recording medium; Comparing random number data generated in the random number data generation step with random number data corresponding to a recording medium recorded on the hard disk drive; Regenerating random number data if the generated random number data and the random number data recorded on the hard disk drive are the same as a result of the comparison; And And reproducing the music data recorded on the recording medium in accordance with the regenerated random number data. The method of claim 5, And storing the reproduced random number data in the hard disk drive when music data is reproduced according to the reproduced random number data. The method of claim 6, Generating the identifier according to the recording medium when the random number data is generated; And storing the generated random number data in the hard disk drive, adding the identifier as a file name and storing the generated random number data in the hard disk drive. The method of claim 7, wherein Searching whether the same file name as the identifier generated according to the recording medium exists in the hard disk drive; The playing of the music data may include: music recorded on the recording medium according to the random number data newly generated by the random number generator, if a file name identical to the identifier generated according to the recording medium does not exist in the hard disk drive. Random recording method of a recording medium, characterized in that for reproducing the data.