JP2001243750A - Recording medium reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium reproducing device with which there is substantially no increase of a memory capacity and which allows the simple calling of a plurality of sample data and an improvement in the user's convenience. SOLUTION: This recording medium reproducing device has a reproduction point setting means for setting reproduction start points and reproduction end points, a reproduction point memory means 34 for storing a plurality of the reproduction start points and the reproduction end points and sampler means S30 to S62 which read the assigned reproduction start points and reproduction and points out of the reproduction point memory means, reproduce the data from the recording medium relating to the sections from the reproduction start points to the reproduction end points and store the data in a sampling memory 28 and therefore there is no increase of the sampling memory and the increase of the memory capacity in the reproduction point memory means is necessitated to be slight. The simple call and use of the sample data from the plural reproduction start points to reproduction end points are made possible and the user's convenience may be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording medium reproducing apparatus, and more particularly to a recording medium reproducing apparatus such as a CD player having a special reproduction function for remixing music recorded on a recording medium.

[0002]

2. Description of the Related Art Conventionally, using a CD (compact disk) on which music is recorded, the tempo and key of the music are changed, the same phrase is repeatedly played, a favorite phrase is mixed, and a mixer is further added. There is a recording medium reproducing apparatus used for a DJ (disc jockey) or the like which performs an original performance for oneself by connecting music using a cross fader.

[0003] Such a recording medium reproducing apparatus has a sampler function for pre-sampling the phrase and storing it in a memory so that the user can mix his favorite phrase during the performance of the song. I have.
In the conventional sampler function, sampling of a predetermined phrase is performed as follows. For example, an operation button for starting sampling is pressed at a portion to be sampled during the reproduction of the music. As a result, storage of a desired phrase in the memory, that is, sample recording is started. Then, storage is performed for the time until the memory capacity is full. If you want to end sampling before the memory is full, press the operation button for ending sampling at the point where you want to end the song to store the desired phrase,
That is, the sample recording ends.

Next, when a sample recording is reproduced, the reproduction is started from the start of the sample recording by pressing a sampling reproduction button, and the sample performance is performed by the reproduction until the end of the sample recording. It is also possible to perform a loop performance of the sample recording by repeatedly reading the sample recording from the memory.

[0005]

In the conventional recording medium reproducing apparatus, since actual audio data is stored in the memory by performing sampling, C
D is limited to one section. Therefore, if there is another section to be sampled, the previously stored sample audio data must be deleted once, and a new sampling must be performed. If the deleted sample data is to be used again In this method, a section must be set from the beginning and sampling must be performed again, which is disadvantageous for the user.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and there is almost no increase in the memory capacity, a plurality of sample data can be easily called, and a recording medium reproducing method which can improve user convenience can be provided. It is intended to provide a device.

[0007]

According to a first aspect of the present invention, there is provided a reproduction point setting means for setting a reproduction start point and a reproduction end point for reproducing a recording medium, and a plurality of the reproduction start points and the reproduction end points. A reproduction start point and a reproduction end point designated from the reproduction point storage means, and reproduces data from the recording medium for a section from the reproduction start point to the reproduction end point and stores the data in the sample memory. Sampler means for performing the measurement.

As described above, the designated reproduction start point and reproduction end point are read from the reproduction point storage means in which a plurality of reproduction start points and reproduction end points are stored, and the recording medium is recorded in the section from the reproduction start point to the reproduction end point. Since the data is reproduced from and stored in the sample memory, there is no increase in the sample memory, and the memory capacity in the reproduction point storage means is only slightly increased, and the sample data from a plurality of reproduction start points to the reproduction end point is stored. It can be easily called and used, and the convenience for the user can be improved.

According to a second aspect of the present invention, in the recording medium reproducing apparatus according to the first aspect, there is provided a level set value storing means for storing a level set value set by the level adjusting means.

As described above, the level of the data to be sampled can be adjusted in advance by the level adjusting means, and the set value can be stored. The memory is stored at an appropriate level, and the sample can be reproduced at an appropriate level.

[0011]

FIG. 1 is a block diagram showing an embodiment of a recording medium reproducing apparatus according to the present invention. In FIG. 1, a CD reproducing unit 10 drives a CD (compact disc) as a recording medium to rotate at twice the normal reproducing speed, and
The double speed reproduction signal reproduced from the pickup of the reproduction unit 10 is supplied to a DSP (Digital Signal Processor) for CD reproduction in the CD reproduction unit 10 through an RF amplifier, where EFM (Eight to Fourteen Processor) is used. Signal processing such as modulation) demodulation and decoding of CIRC (cross interleaved Reed-Solomon code) is performed.

Further, the sub-code is separated from the reproduced signal, and the sub-code is decoded. The subcode data is stored in a RAM in the main microcomputer 12 according to a counter signal from a main microcomputer (hereinafter, abbreviated as “main microcomputer”) 12. The audio data signal-processed by the CD playback DSP is supplied to the data maintenance DSP 14.

A DSP (Dynamic RAM) 16 for storing audio data is connected to the DSP 14, and the DSP 14 has a role of a memory controller. The DRAM 16 can store the transmitted audio data for, for example, about 10 seconds. The DRAM 16 has an anti-shock function for protection from skipping due to a defect or the like, and a quick sound function for instantly outputting a desired music. To realize a start function, a seamless loop function for repeatedly playing back between two predetermined points, a function for performing a scratch process, a function for changing the tempo of a song, and a brake function for gradually reducing the playback speed and stopping the song. Used for

The DSP 14 writes the audio data read at double speed into the DRAM 16 according to the counter signal from the main microcomputer 12, and reads the audio data at 1 × speed according to the counter signal from the main microcomputer 12 to read the audio data for the CD sound effect. Supply to DSP18.

The DSP 18 has a DR as a working memory.
AM20 is connected, DSP18 is key (pitch)
Performs various effect processing such as sound adjustment, output level adjustment, and a voice reduce function that lowers only the vocal volume in a song. The audio data output from the DSP 18 is supplied to the D / A converter 22 through a digital filter, and is also supplied to a DSP 26 for a sampler effect.

The DSP 26 has a D for storing data.
A RAM (dynamic RAM) 28 is connected,
The DSP 26 has a role of a memory controller.
The DRAM 28 can store audio data, for example, for about 10 seconds. The DSP 26 performs a sampler process. The audio data from the sampling start point to the sampling end point specified by the user is stored in the DRAM 2
8 and read out the audio data stored at the playback timing designated by the user,
0 and to the DSP 18. DSP18
Then, the audio data from the DSP 26 is mixed with the output audio data of the own device and supplied to the D / A converter 22.

The main microcomputer 12 stores an EPROM (erasable programmable ROM) 32 in which programs and data for processing are stored, and various set values such as a tempo value and a loop point for each song (or track). (Electrically Erasable Programmable ROM) 34 is connected.
The clock generator 36 generates a clock signal and generates C
It is supplied to the D reproduction unit 10 and the main microcomputer 12.

The main microcomputer 12 reads the subcode from the built-in RAM according to the counter signal, and supplies it to a microcomputer (hereinafter abbreviated as “microcomputer”) 42 of the controller unit 40. The microcomputer 42 converts the subcode into a time code and displays it on the display 44. The controller unit 40 includes an operation unit 4 provided with various operation keys operated by a user.
6 is provided and connected to the microcomputer 42.

FIGS. 2 and 3 are functional block diagrams of the DSPs 14, 18, and 26. In FIG. 2, the comparison connection function 50 of the DSP 14 compares the audio data read at double speed with the last data stored in the DRAM 16 based on the control of the counter signal from the main microcomputer 12 and connects the audio data. The memory write function 51 writes the connected audio data to the DRAM 16. The memory read function 52 reads audio data from the DRAM 16. The tempo function 54 adjusts the tempo by changing the read speed of the memory read function 52. Fade-in/
The fade-out function 55 adjusts the level of audio data at the time of fade-in / fade-out.

In FIG. 3, a de-emphasis function 60 of the DSP 18 performs a de-emphasis process for restoring the emphasis at the time of recording a CD. The key adjustment function 61 variably adjusts the key (pitch) while fixing the tempo. A BPM (beat per minute) function 62 measures the number of beats per minute of a song. The voice reduce function 63 reduces only the vocal volume in the music. The output level adjustment function 64 adjusts the output level. The audio data output from the output level adjusting function 64 is output through the mixing function 65 and is also supplied to the sampler function 67 of the DSP 26 when the switch 66 is turned on.

The sampler function 67 writes audio data to the DRAM 28, and reads audio data from the DRAM 28 when the switch 70 is turned on. The tempo function 68 adjusts the tempo of the audio data supplied from the sampler function 67. Key adjustment function 6
9 variably adjusts the key (pitch) while fixing the tempo. Thereafter, the audio data output from the key adjustment function 69 is output through the switch 70, and is turned on in conjunction with the switch 71 (the switch 70) of the DSP 18. ) Is supplied to the mixing function 65 and the output level adjusting function 64
The audio data is mixed with the audio data and output.

It should be noted that the recording medium reproducing apparatus shown in FIG. 1 is a set of two units, and the main microcomputer 12 of each recording medium reproducing apparatus.
Operate in conjunction with each other by transmitting and receiving control information to and from each other. FIG. 4 is a plan view of the controller unit 40 of a pair of recording medium reproducing apparatuses. Since the controller unit 40 of each recording medium reproducing device has the same configuration,
In FIG. 4, only one is denoted by a reference numeral.

In FIG. 4, a display section 80 of the display 44 displays various information such as a track number and a time code, and a display section 81 displays a BPM value.
Also, a preset key 82, a jog dial 83, a skip key 84, a search key 85, a play /
Pause key 86, bank key 87, memory key 88, recall key 89, enter key 90, TAP key 91,
BPM key 92, tempo SYNC key 93, beat SY
NC key 94, loop key 95, A key 96, B key 9
7, Sample key 98, IN key 99, OUT key 10
0, tempo key 101, tempo volume 102, scratch key 103, brake key 104, numeric keypad 10
5 and the like are provided.

In the present invention, sampling is performed by pressing the IN key 99 and OUT key 100 during playback or pause, or by simultaneously pressing the B key 97 and OUT key 100 after setting a loop to turn on.
Be executed. At this time, the time codes of the sampling start point IN and the sampling end point OUT are stored in the RAM incorporated in the main microcomputer 12. Also, in this RAM, the disc ID including the total number of tracks and the recording time read from the TOC (table of contents) when the CD is mounted on the recording medium device.
And various set values such as a cue point, a loop start point and an end point, a sampling start point and an end point, a tempo value, a key (pitch) set value, an output level set value, and the like. Is updated by performing various key input operations to change the. A memory function is provided so that the user can save the current settings and recall them when necessary. An EEPROM 34 is connected to the main microcomputer 12 for this memory function, and various setting contents read from the built-in RAM of the main microcomputer 12 are stored in the EEPROM 34.

Here, as shown in FIG. 5, the EEPROM 34 has five areas A to E (hereinafter referred to as banks).
Each bank is further divided into 200 small areas (designated by memory numbers 1 to 200), and this one small area has a capacity for storing the disk ID and various set values. ing. In each bank, one small area is allocated to one track (a track corresponds to a song). Therefore, 200 banks (songs) of set values can be stored in each bank, and 1000 banks of set values can be stored in the entire memory.

Since there is only one small area in one track in one bank, when it is desired to store a plurality of types of setting contents for the same track, the contents are stored in different banks. Thus, a plurality of types of setting contents for the same track can be stored. In addition, it is possible to change the bank to be stored for each genre of the music source and store it. For example, hip hop can be specified and stored in bank A, and rock can be classified and classified by genre by specifying and storing bank B. By specifying the desired bank when recalling the stored contents, Songs of a desired genre can be called instantaneously.

Further, it is possible to change the bank to be stored for each tempo value which is a value indicating the tempo of the music source and store the music source. For example, by storing the tempo values 80 to 90 by designating the A bank and by storing the tempo values 90 to 110 by designating the B bank, the tempo values can be classified by tempo value. By designating a predetermined bank, a song having a desired tempo value can be instantly called.

FIGS. 6, 7 and 8 show flowcharts of one embodiment of the memory setting process, the memory recall process, and the sampling process, respectively. In the memory setting process of FIG. 6, first, in steps S10 and S12, the bank key 87 is set.
Press to select one of banks A to E. Which bank is selected is displayed on the display section 80 of the display 44. Next, in a step S14, it is determined whether or not the memory key 88 is turned on. If the memory key 88 is not on, the process proceeds to step S16 to determine whether the recall key 89 is on.

If the memory key 88 is on, step S
Go to step 18 and select the main microcomputer 1 in the selected bank.
Then, it is determined whether or not there is a small area (memory) storing the set value of the user stored in the built-in RAM and the set value of the same track (song). If there is a small area storing the set value of the same track, in order to keep the principle that one small area is assigned to one track in one bank, this memory setting processing is terminated or the relevant small area is set. In step S19, the display 4 is checked in order to confirm whether a new set value to be saved can be overwritten.
4 is displayed on the display unit 80 of FIG. 4 and confirming that the enter key 90 has been pressed in step S21, the process proceeds to step S28, and the user currently stored in the RAM incorporated in the main microcomputer 12 is displayed. Is overwritten on the small area.

If there is no small area storing the set value of the same track, an empty small area in the bank selected in step S20 is checked, and in step S22, the presence or absence of an empty small area is determined. If there is no free small area, the memory setting process is terminated. If there is a free small area, the free small area having the smallest memory number is selected in step S24. Thereafter, in a step S26, it is determined whether or not the enter key 90 is pressed.
When the enter key 90 is pressed, the user's set value currently stored in the RAM built in the main microcomputer 12 is stored in the selected small area in step S28.

If there is a small area storing the set value of the same track in the selected bank, or if there is no free small area in the selected bank, the bank is changed or the already set bank is set. The contents of the small area are deleted, and FIG.
Can also be executed.

In step S16 of FIG. 6, the recall key 89
When it is determined that is turned on, the process proceeds to step S30 of the memory calling process shown in FIG.

In step S30, it is determined whether or not a memory number has been input using the numeric keypad 105. If a memory number has not been input, it is determined in step S32 whether or not a track number has been input. If a memory number has been input, a small area of the input memory number is selected in step S34, and the flow advances to step S38. If a track number has been input, a small area in which the input track number is set is selected in step S36, and the flow advances to step S38. If the track number is not input, the area of the current track number and the memory number is selected in step S33, and step S3 is executed.
Proceed to 8.

In step S38, it is determined whether or not the set value is stored in the selected small area. If the set value is not stored, that is, if the set value is an empty small area, the process proceeds to step S30. If the set value is stored, step S40 is performed. To display the contents (set value) of the small area on the display unit 8 of the display 44.
Display at 0. Thereafter, in a step S42, it is determined whether or not the enter key 90 is pressed. When the enter key 90 is pressed, the contents stored in the small area selected in the step S44 are read out, and in a step S46, the sampling point data (sampling point data) is read. It is determined whether there is a start point IN time code and a sampling end point OUT (time code). If there is no sampling point data, other contents read from the small area in step S48 are stored in the main microcomputer 12. Then, the process is terminated.

On the other hand, if there is sampling point data in step S46, the flow advances to step S50 of the sampling process shown in FIG. In step S50, the display unit 8 of the display 44 informs that the sampling point data is present.
Display at 0. Thereafter, in step S52, the DRAM 28
It is determined whether there is permission to rewrite the sample audio data. This permission is set by the user in advance to determine whether or not the permission for rewriting is necessary so that the data in the DRAM 28 is not carelessly rewritten.

If permission has not been set, it is determined in step S54 whether rewriting permission by manual operation has been set. If the rewrite permission is set, the sampling point data read from the small area in step S58 is stored in the RA stored in the main microcomputer 12.
M, and the reproduction is performed by moving the pickup based on the time code of the sampling point data written in the RAM in step S60. After the reproduced data undergoes various signal processing and effect processing, the sampled audio data is stored in the DRAM 28 and rewritten in step S62.

With respect to a plurality of types of setting contents of the same track, the contents set for the same track can be instantly called by switching banks at the time of recall. When each bank is classified and stored according to the genre of the music source and the like, the heading of the classification of each bank is stored so that the heading of each bank is displayed at the time of recall, and the music of the desired genre is displayed. Can be easily called.

In the above embodiment, the recording medium is a CD.
, But instead of a CD, a DVD (digital
Other recording media such as a versatile disc), an MD (mini disc), and a flash memory may be used, and the present invention is not limited to the above embodiment.

The setting of the reproduction start point and the reproduction end point by the operation keys corresponds to the reproduction point setting means described in the claims, the EEPROM 34 corresponds to the reproduction point storage means, the DRAM 28 corresponds to the sample memory, and S30 to S48 correspond to sampler means, and the output level adjustment function 64 corresponds to level adjustment means.

[0040]

As described above, the first aspect of the present invention provides
The designated reproduction start point and reproduction end point are read out from the reproduction point storage means in which a plurality of reproduction start points and reproduction end points are stored, and data is reproduced from the recording medium for the section from the reproduction start point to the reproduction end point, and is used for sampling. Since the memory is stored in the memory, there is no increase in the memory for sampling, and the memory capacity in the playback point storage means is only slightly increased, and sample data from a plurality of playback start points to playback end points can be easily called and used. And user convenience can be improved.

According to the second aspect of the present invention, the level of the data to be sampled can be adjusted in advance by the level adjusting means and the set value can be stored, so that the data is stored in the sample memory. In this case, the memory is stored at the adjusted appropriate level, and the sample can be reproduced at the appropriate level.

[Brief description of the drawings]

FIG. 1 is a block diagram of a recording medium reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a DSP 14;

FIG. 3 is a functional block diagram of DSPs 18 and 26.

FIG. 4 is a plan view of a pair of two controller units 40 of the recording medium reproducing apparatus of the present invention.

FIG. 5 is a diagram showing a memory configuration of an EEPROM 34;

FIG. 6 is a flowchart of an embodiment of a memory setting process.

FIG. 7 is a flowchart of an embodiment of a memory recall process.

FIG. 8 is a flowchart of an embodiment of a sampling process.

[Description of Signs] 10 CD playback unit 12 Main microcomputer 14 Data maintenance DSP 14 16, 20, 28 DRAM 18 CD sound effect DSP 18 22, 30 D / A converter 26 Sampler effect DSP 26 32 EPROM 34 EEPROM 36 Clock generator 40 Controller Unit 42 Microcomputer 44 Display 46 Operation unit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) G11B 27/00 G10L 9/18 G (72) Inventor Yasunobu Shimizu 3-7-3 Nakamachi, Musashino City, Tokyo Inside TAC Co., Ltd. (72) Inventor Kenji Oniki 3-7-3 Nakamachi, Musashino-shi, Tokyo F-Term Co., Ltd. F-term (reference) 5D044 AB05 BC03 CC06 CC10 DE38 DE57 EF05 FG23 GK12 5D077 AA26 BA01 BA30 BB20 CA02 CB02 DC03 DC37 DD20 5D090 AA01 BB02 CC04 EE20 FF49 GG29 5D110 AA12 BB02 BB20 BB24 BC00 DA15 DB08 DE06 9A001 BB06 KK16 KK43 KK45

Claims (2)

[Claims] 1. A reproduction point setting means for setting a reproduction start point and a reproduction end point for reproducing a recording medium; a reproduction point storage means for storing a plurality of the reproduction start points and a reproduction end point; Sampler means for reading a specified reproduction start point and reproduction end point, reproducing data from the recording medium for a section from the reproduction start point to the reproduction end point, and storing the data in a sample memory. Playback device. 2. The recording medium reproducing apparatus according to claim 1, wherein a level adjusting means for adjusting a reproduction level of data reproduced from the recording medium, and a level for storing a level set value set by the level adjusting means. A recording medium reproducing apparatus comprising: a set value storage unit.