JP2001110122A - Audio device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio device for vehicle capable of executing the special reproduction such as 'scratch reproduction, cueing and predetermined sectional reproduction, and loop reproduction' by only carrying out the pure electrical processing without being adversely affected by the external disturbance, specially by the outside vibration, even though the degree of servo control of an optical pickup is about the same as that of the present state, and also capable of executing the function of the special reproduction such as 'mixing reproduction and cross-fade reproduction' without preparing plural disk drives. SOLUTION: A microcomputer 11 is provided for compositely controlling the whole audio device for vehicle, and a CD/MD player 15 is connected thereto. A digital output of the CD/MD player 15 is preliminarily fetched to a music memory 20, then the function is realized by the pure electrical processing when a variety of special reproductions are carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car audio device, and more particularly to an improvement in a car audio device capable of reproducing a disk such as a CD or MD and emitting sound from a speaker.

[0002]

2. Description of the Related Art A conventional car audio device often includes, for example, a schematic circuit as shown in FIG. 3 when a reproduction sound source is a CD or MD. That is, the apparatus microcomputer 10 is provided with the system microcomputer 1 for controlling the entire apparatus in an integrated manner. This system microcomputer 1 includes:
R storing a series of execution programs for operating the entire apparatus
0M2 and a RAM 3 for temporarily writing / reading operation control data are connected, and an image monitor 4 for displaying an operation is also connected.

A touch panel 4a is formed on the surface of the image monitor 4, and the touch panel 4a located on an operation button screen (picture) reproduced by a display signal b sent from the system microcomputer 1 is touched by a finger to a predetermined position. Is transmitted to the system microcomputer 1.

The CD / CD connected to the system microcomputer 1
The MD player 5 controls various reproduction operations under the control of the system microcomputer 1. The reproduction output is an equalizer function for controlling the sound quality by increasing or decreasing the gain of a predetermined frequency in the audio band, and noise elimination. The power is supplied to the power AMP 7 via the filter 6 having a function, and the power is amplified to a predetermined level by the power AMP 7 so that the right loudspeaker 8 and the left loudspeaker 9 can emit sound. The CD / MD player is brought into contact with the touch panel 4a. 5 can perform stop / regular playback / song skip / pause of a CD or MD.

[0005] In addition to the "stop / regular playback / song skip / pause" functions normally performed for CDs and MDs, "special playback functions" are mainly enumerated below (a)-( f) There are 6 types as shown below.

(A) "Mixing reproduction" for mixing and outputting a plurality of songs.

(B) "Cross-fade reproduction" in which a sound obtained by performing a fade-out process on an end portion of one of two songs and a sound obtained by performing a fade-in process on a start portion of the other music are mixed and output.

(C) "Scratch reproduction" in which forward reproduction and reverse reproduction are performed at an arbitrary speed and output.

(D) "Cueing" for reproducing an arbitrary music, performing forward reproduction and reverse reproduction at an arbitrary speed and moving to a desired reproduction position.

(E) "Predetermined section reproduction" in which a reproduction start position and a reproduction end position are set and reproduced when an arbitrary music is reproduced.

(F) "Loop reproduction" in which a reproduction start position and a reproduction end position are set when an arbitrary music is reproduced, and reproduction based on the memory setting is repeated.

The reproduction of the above (c) to (f) is realized by frequently performing "a fine track jump in the forward direction" and "a fine track jump in the reverse direction". ) Is realized on the premise that a plurality of disk drive devices are provided, and the disk drive devices are simultaneously set in the reproduction state and executed.

Therefore, in a stationary type device having little disturbance, especially small external vibration, the functions (c) to (f) described above can be substantially satisfied by controlling the servo drive of the optical pickup strongly. Can be achieved.

The functions (a) and (b) described above may be complicated by providing a plurality of disk drives, but the servo drive of the optical pickup is not so powerful. Also, the same servo control as in normal reproduction is sufficient.

[0015]

The above-mentioned (c) to (f)
In order to achieve the function of
Since the optical pickup is realized by frequently performing “small track jump in the forward direction” and “small track jump in the reverse direction” with respect to the track of the disk, it can be used in a car audio device that has a lot of disturbance, especially vibration. It is difficult to incorporate functions, and to perform stable playback,
Since powerful servo control must be performed, the configuration becomes complicated and large, resulting in a significant increase in cost.

On the other hand, in order to achieve the functions (a) and (b) described above, the servo drive of the optical pickup may be the same as the current state, but a plurality of disk drive units must be provided, and It becomes complicated and particularly large.

Therefore, a first object of the present invention is to perform the above-mentioned special reproduction of (c) scratch reproduction, (d) queuing (e), predetermined section reproduction (f), and loop reproduction by the servo of an optical pickup. It is an object of the present invention to provide a car audio apparatus which is hardly affected by disturbances, particularly external vibrations, and can be executed only by performing purely electric processing, even if the control is at the same level as the current state.

A second object of the present invention is to perform the above-described special reproduction of (a) mixing reproduction and (b) cross-fade reproduction without providing a plurality of disk drives and performing servo control of an optical pickup. It is an object of the present invention to provide a car audio device which can be executed only by performing purely electric processing, which is hardly affected by disturbances, particularly external vibrations, even if the current level is the same.

[0019]

In order to solve the above problems, the present invention employs the following characteristic configuration.

(1) A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a music information disk is provided, and the music data stored in the plurality of music memories is stored in the music memory. A car audio device capable of arbitrarily extracting and outputting sound from a speaker, extracting a plurality of song data stored in each of a plurality of song memories included in the music memory, and mixing the extracted plurality of song data. It is provided with mixing control means for outputting.

(2) A music memory having a plurality of music memories for storing a plurality of music data obtained by reproducing a disk such as a CD or an MD is provided, and the music stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting data and emitting sound from a speaker,
Two pieces of music data stored in each of the plurality of music memories of the music memory are extracted, and the first data obtained by performing a fade-out process on an end portion of one of the extracted music data, and the other data of the other music data. Cross-fade control means for mixing and outputting the second data obtained by performing the fade-in process on the start portion and outputting the mixed data.

(3) A music memory having a plurality of music memories for storing a plurality of music data obtained by reproducing a disc such as a CD or an MD is provided, and the music stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting data and emitting sound from a speaker,
Scratch playback control capable of taking out arbitrary song data from the song data stored in each of the plurality of song memories of the music memory and performing control so that forward playback and reverse playback are performed at an arbitrary speed and output. Means.

(4) A music memory having a plurality of music memories for storing a plurality of music data obtained by reproducing a disc such as a CD or an MD is provided, and the music stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting data and emitting sound from a speaker,
Take out arbitrary song data from the song data stored in each of the plurality of song memories of the music memory,
A queuing control means for performing forward reproduction and reverse reproduction at an arbitrary speed and moving to a desired reproduction position is provided.

(5) A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD is provided, and the music stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting data and emitting sound from a speaker,
Take out arbitrary song data from the song data stored in each of the plurality of song memories of the music memory,
The apparatus includes a predetermined section reproduction control unit that performs forward reproduction and reverse reproduction at an arbitrary speed, sets a reproduction start position and a reproduction end position in a memory, and performs reproduction based on the memory setting.

(6) A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD is provided, and the music stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting data and emitting sound from a speaker,
Take out arbitrary song data from the song data stored in each of the plurality of song memories of the music memory,
There is provided a loop reproduction control means for performing forward reproduction and reverse reproduction at an arbitrary speed, setting a reproduction start position and a reproduction end position in a memory, and repeatedly performing reproduction based on the memory setting.

(8) Various commands for reproducing the music data stored in the music memory of the music memory of any of the above (1) to (6) are issued by a touch panel formed on a predetermined operation button screen. It is configured to be performed by a contact operation.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS. This embodiment is an example in which all functions of “mixing reproduction”, “crossfade reproduction”, “scratch reproduction”, “queuing”, “predetermined section reproduction”, and “loop reproduction” can be executed.

The car audio apparatus shown in FIG. 1 has a system microcomputer 1 for controlling the overall operation of the car audio apparatus in a complex manner.
The system microcomputer 1 has an R0M1 storing a series of execution programs for operating the entire apparatus.
2 and a RAM 13 for temporarily writing / reading operation control data are connected, and an image monitor 14 for displaying an operation is also connected.

A touch panel 14a is formed on the surface of the image monitor 14, and an operation button screen (picture) reproduced by a display signal b sent from the system microcomputer 11
Is a predetermined command signal by touching the touch panel 14a located at a position with the finger, that is, a control command signal a0 for normal reproduction and a command signal for special reproduction. Specifically, "mixing command signal a1, Fade command signal a2, scratch command signal a3, cue command signal a
4, predetermined section reproduction command signal a5, loop reproduction command signal a
6 ".

The CD / MD player 15 connected to the system microcomputer 1 has various playback operations controlled under the control of the system microcomputer 11, and its playback digital output is supplied via a music memory 20. Is supplied to a power AMP 17 via a filter 16 having a function of controlling sound quality by increasing / decreasing a gain of a predetermined frequency in a voice band and a function of removing noise.
7, the sound is amplified to a predetermined level, and sound can be emitted from the right speaker 18 and the left speaker 19.
By touching “a”, the normal reproduction function of “stop / regular reproduction / music skip / pause” of the CD or MD by the CD / MD player 15 can be executed.

The music memory 20 has a plurality of music memories each storing a plurality of music data obtained by reproducing a disk such as a CD or an MD. 2. The digitally output music data is taken in, and as shown in FIG.
The tune memories 20-n are stored in advance before the special reproduction.

The music data stored in the music memory 20 may be stored as it is with the data read from the disk. Can be shortened,
If the disc in the CD / MD player 15 is driven at a high speed, the storage time can be further reduced. Such music data storage is performed not only for one disc but also for a plurality of discs. The first memory 21, the second memory 22, and the third memory 23 provided in the music memory 20 shown in FIG. 2 are for signal processing.

Therefore, the operations for executing the functions (a) to (f) are as follows.

(A) A command for performing the mixing reproduction is sent to the system microcomputer 11 as a mixing command signal a1 based on the output from the touch panel 14a, and the designation of the music data to be mixed, the volume of each music, When data such as sound quality is transmitted to the system microcomputer 11, the music memory 20-
The selected data among the data 1-20-n is stored in the first memory 21.
Is moved to the second memory 22, and the music content of both memories is taken out in parallel to perform the mixing reproduction.

(B) A command for causing cross-fade reproduction is given as a cross-fade command signal a2 based on the output from the touch panel 14a.
When song data to be cross-fade and data such as fade-in / out time, volume and sound quality of each song are sent to the system microcomputer 11, the song memory 20-1 in the music memory 20 is sent. ~ 20-n
Is moved to the first memory 21 and the second memory 22, the contents of the songs in both memories are taken out in parallel, and the end of the first song and the beginning of the second song are Perform cross-fade playback.

(C) A command for performing the scratch reproduction is sent to the system microcomputer 11 as a scratch command signal a3 based on the output from the touch panel 14a. When data such as sound quality is transmitted to the system microcomputer 11, the music memory 20 in the music memory 20 is output.
-1 to 20-n are stored in the first memory 2
Then, the contents of the memory are taken out, and scratch reproduction is performed based on a forward reproduction command and a reverse reproduction command output from the touch panel 14a.

(D) A command for performing queuing is sent to the system microcomputer 11 as a queuing command signal a4 based on the output from the touch panel 14a. When data such as volume and sound quality is sent to the system microcomputer 11, the music memory 2 in the music memory 20
Data selected from 0-1 to 20-n is moved to the first memory 21, the contents of the memory are extracted, and queuing is performed based on the forward movement command and the backward movement command output from the touch panel 14a. I do.

(E) A command for performing the predetermined section reproduction is sent to the system microcomputer 11 as the predetermined section reproduction command signal a5 based on the output from the touch panel 14a, and the music data to be reproduced for the predetermined section is designated. When data such as the volume and sound quality of the music is sent to the system microcomputer 11, the music memory 20-
The selected data among the data 1-20-n is stored in the first memory 21.
Then, the contents of the memory music are taken out, and the "reproduction start point" and "reproduction end point" are specified by executing the above-described queuing function, and reproduction between the two points is performed.

(F) A command for performing loop reproduction is sent to the system microcomputer 11 as a loop reproduction command signal a6 based on an output from the touch panel 14a.
When the music data to be loop-reproduced and the data such as the volume and sound quality of the music are transmitted to the system microcomputer 11, the music memories 20-1 to 20-1 in the music memory 20 are transmitted.
20-n is moved to the first memory 21, the contents of the memory music are taken out, and the above-described queuing function is executed to set the "loop reproduction start point" and the "loop reproduction end point". Identify and perform loop playback between both points.

In this way, six types of special reproduction can be performed. Note that, in this embodiment, “normal reproduction” other than (a) to (f) is performed using data stored in the music memory 20 and “executed only by pure electric processing”.
However, any of “execute by driving the optical head in the conventional manner” may be used.

[0041]

As is apparent from the above description, the car audio apparatus according to the present invention sets the disc in the reproducing state and sets the optical pickup to the disc in order to achieve the functions (c) to (f) described above. Rather than adopting a means of frequently performing “forward minute track jump” and “reverse minute track jump” on a track, music data is stored in a music memory, and this is purely electronically processed. It is suitable for incorporating the function into a car audio device that has a lot of disturbance, especially vibration, because it is executed only by itself, and performs stable playback, performs powerful servo control, makes the configuration complicated and increases the size No significant cost increase occurs.

On the other hand, in order to achieve the above-mentioned functions (a) and (b), the servo drive of the optical pickup may be the same as the current state, and a plurality of disk drive units are not required and one drive is sufficient. The configuration is not complicated and the size is not increased.

Therefore, the above-mentioned special reproductions (c) to (f) are not easily affected by disturbances, especially external vibrations, even if the servo control of the optical pickup is at the same level as the current state.
It is possible to provide a car audio device that can be executed only by performing purely electric processing, and perform the above-described special reproduction of (a) and (b) without providing a plurality of disk drives. Further, even if the servo control of the optical pickup is at the same level as the current state, it is possible to provide a car audio apparatus which can be executed only by performing purely electric processing without being easily affected by disturbance, particularly external vibration. it can.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a schematic circuit configuration of a car audio device according to an embodiment of the present invention.

FIG. 2 is a block circuit diagram showing a detailed configuration of a music memory shown in FIG.

FIG. 3 is a block circuit diagram showing a schematic circuit configuration of a conventional car audio device.

[Description of Signs] 11 System microcomputer 12 ROM 13 RAM 14 Image monitor 14a Touch panel 15 CD / MD player 16 Filter 17 Power AMP 18 Right speaker 19 Left speaker 20 Music memory 20-1 to 20-n Song memory 21 First memory 22 second memory 23 third memory 24 main unit

Claims (7)

[Claims] 1. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a music information disk, and the music data stored in the plurality of music memories is arbitrarily stored. A plurality of song data stored in each of a plurality of song memories included in the music memory, and the extracted plurality of song data are mixed and output. A car audio device, comprising: a mixing control unit. 2. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD, wherein the music data stored in the plurality of music memories is provided. Is a car audio device capable of arbitrarily extracting sound data from a speaker, extracting two pieces of music data stored in each of a plurality of music memories of the music memory, and ending a part of one of the extracted music data. And a cross fade control means for mixing and outputting the first data obtained by performing a fade-out process on the first data and the second data obtained by performing a fade-in process on a start portion of the other music data. Car audio equipment. 3. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD, wherein the music data stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting music data from a plurality of music memories of the music memory, and arbitrarily extracting music data from the music data stored in the plurality of music memories of the music memory. A car audio device comprising: a scratch reproduction control unit capable of controlling a direction reproduction to be performed at an arbitrary speed and to output the reproduction. 4. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD, wherein the music data stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting sound data from a speaker, extracting arbitrary music data from music data stored in each of a plurality of music memories of the music memory,
A car audio apparatus comprising queuing control means for performing forward reproduction and reverse reproduction at an arbitrary speed and moving to a desired reproduction position. 5. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD, wherein the music data stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting sound data from a speaker, extracting arbitrary music data from music data stored in each of a plurality of music memories of the music memory,
A car audio apparatus comprising: a predetermined section reproduction control means for setting a reproduction start position and a reproduction end position in a memory by performing forward reproduction and reverse reproduction at an arbitrary speed, and performing reproduction based on the memory setting. . 6. A music memory having a plurality of music memories each storing a plurality of music data obtained by reproducing a disc such as a CD or an MD, wherein the music data stored in the plurality of music memories is provided. A car audio device capable of arbitrarily extracting sound data from a speaker, extracting arbitrary music data from music data stored in each of a plurality of music memories of the music memory,
A car audio apparatus comprising: a loop audio playback control unit that performs forward playback and reverse playback at an arbitrary speed, sets a playback start position and a playback end position in a memory, and repeats playback based on the memory setting. . 7. A system in which various commands for reproducing music data stored in the music memory of the music memory are made by a touch operation on a touch panel formed on a predetermined operation button screen. Claim 1
7. The car audio device according to claim 6.