CN1941135A - Audio-frequency outputting adjusting device and method for disk - Google Patents
Audio-frequency outputting adjusting device and method for disk Download PDFInfo
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- CN1941135A CN1941135A CN 200510030212 CN200510030212A CN1941135A CN 1941135 A CN1941135 A CN 1941135A CN 200510030212 CN200510030212 CN 200510030212 CN 200510030212 A CN200510030212 A CN 200510030212A CN 1941135 A CN1941135 A CN 1941135A
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Abstract
This invention is a frequency output adjusting device and its working method for playing of more than two kinds of disk. It includes the following procedures: transfer the data from the disk to simulate signals and amplify according to preset plus value and output; amplify for the second time according to preset plus value and output; according to the disk category choose the post-treated signal and output; amplify the chosen signal to audible frequency signal and output.
Description
Technical field
The invention relates to audio frequency output regulating device and control method thereof, especially for can be concerning the optical disc apparatus that the CD more than 2 kinds of CD or DVD and so on is play, no matter the kind of CD is how, can both be to carry out the audio frequency output regulating device and the control method thereof of a kind of optical disc apparatus of suitable adjusting to the audio volume of outside output by loudspeaker.
Background technology
For common DVD player, it not only can be play DVD, and can play CD.The user can listen to the DVD that plays by above-mentioned DVD player or the sound signal on the CD by boombox or built-in earphone.
Fig. 1 is the structural representation of the audio output circuit of the common DVD player of expression.As shown in the figure, it comprises following components: mpeg decoder 10; Digital/analog converter (DAC) 20; Amplifier (Amp) 30; Impact damper 40; Audio frequency input-output unit 50; Port Multiplier (Mux) 60; Microcomputer 70; Speaker amplifier 80; The loudspeaker 81 that to export to the outside from the sound signal of above-mentioned speaker amplifier 80 outputs; And earphone 82.
In the above-described configuration, above-mentioned Port Multiplier 60 can will be selected and with its output from the external audio signal of above-mentioned audio frequency input-output unit 50 inputs or from the sound signal of inserting the dvd playback output of installing under the control of above-mentioned microcomputer 70.
In addition, for above-mentioned amplifier 30, it can be according to the yield value of having set and with the output audio signal of above-mentioned DAC20 carry out amplification handle after with its output.And for above-mentioned speaker amplifier 80, the volume adjustment criteria that it can be set according to the user and correspondingly to the output audio signal of above-mentioned Port Multiplier 60 carry out amplification handle after with its output.
Below, will carry out brief description to the playback action of DVD player shown in Figure 1.
At first, after above-mentioned mpeg decoder 10 will be decoded according to the MPEG mode from the voice data that above-mentioned CD reads out according to user's playback action request with its output.Then, above-mentioned DAC 20 just is converted to simulated audio signal with above-mentioned decoded voice data.Then, above-mentioned amplifier 30 just carries out the simulated audio signal after the above-mentioned conversion amplification processing.Then, export to above-mentioned audio frequency input-output unit 50 by above-mentioned impact damper 40 through the sound signal after the amplification processing above-mentioned again.Simultaneously, import to above-mentioned loudspeaker 80 through the sound signal after the amplification processing above-mentioned.The volume adjustment criteria that can set according to the user and correspondingly above-mentioned signal is carried out amplification and handle like this, just.Then, just can be by above-mentioned loudspeaker 81 or earphone 82 and with above-mentioned audible sound frequently signal export to the outside.
As shown in Figure 1, for common DVD player, it is provided with one can carry out above-mentioned simulated audio signal the amplifier 30 that amplification is handled.Like this, in case the yield value of above-mentioned single amplifier 30 is to have set with regard to disposable when circuit constitutes.Just can not regulate then.In this case, the user just can only by to the volume of above-mentioned speaker amplifier 80 output carry out manual adjustments, thereby the volume of the sound signal of output is regulated.
As mentioned above, optical disc apparatus for the foundation conventional art, even store sound signal under the situation of (or recording) according to mutually different audio standard according to the variety classes of CD, no matter then the kind of CD how, it all can carry out identical amplification to the sound signal of playing and handle.Therefore, will be different according to the kind difference of CD by the volume of the sound signal of loudspeaker output.Like this, even the user finish volume regulated after, when other CD is play, also need again volume to be regulated once more.Like this, make troubles for user's use.This is its existing problem.
Summary of the invention
Therefore, the present invention proposes for addressing the above problem, and the object of the present invention is to provide a kind of audio frequency output regulating device and control method thereof of optical disc apparatus.Like this, just can differently according to the kind of CD make the amplification degree of the sound signal of being play also inequality.In this case, no matter the kind of CD how, just can carry out suitable adjusting to the volume of the sound signal by loudspeaker output.
To achieve these goals, the audio frequency output regulating device of optical disc apparatus of the present invention has the feature that is made of following components: will be converted to the sound signal of simulating signal from the data that CD reads out, and according to the yield value of having set it be carried out the 1st amplifier that amplification is handled the line output of going forward side by side then; According to the yield value of having set above-mentioned sound signal through amplification processing back output is carried out the 2nd amplifier that amplification is handled the line output of going forward side by side once more; In respectively by a plurality of sound signals of above-mentioned the 1st amplifier and above-mentioned the 2nd amplifier input, select the go forward side by side Port Multiplier of line output of more than one signal; And the kind of the CD that above-mentioned insertion is installed differentiates, then the microcomputer of controlling according to above-mentioned differentiation result and to the signal selection course of above-mentioned Port Multiplier.
In addition, the audio frequency output adjusting method of optical disc apparatus of the present invention has the feature that is made of following step: the 1st step, to be converted to the sound signal of simulating signal from the data that CD reads out, according to the yield value set it be carried out that amplification is handled then and its output; The 2nd step carries out once more with the above-mentioned sound signal of handling back output through amplification that amplification is handled and with its output according to the yield value of having set; The 3rd step, the CD of installing according to above-mentioned insertion all kinds of, the sound signal of will be in above-mentioned the 1st step or the 2nd step handling back output through amplification is selected and with its output; And the 4th step, the sound signal of exporting after the above-mentioned selection is carried out amplification be treated to audible sound signal frequently, and export to the outside.
Effect of the present invention:
As mentioned above, audio frequency output regulating device and control method thereof for optical disc apparatus of the present invention, to being stored in sound signal on the mutually different CD of audio storage standard when playing, just can with by loudspeaker outwards output audible sound frequently the volume of signal remain in the certain standard.Therefore, it is applicable to the disk playing device of Portable DVD player and so on.In this case, no matter the kind of disk how, it can both be with carrying out suitable adjusting by the sound signal of loudspeaker output, so that the volume of the sound signal of above-mentioned output remains in the certain standard.Simultaneously, can export the music of high tone quality to greatest extent, give brand-new auditory perception.This is the good result that has according to the present invention.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of the audio output circuit of the common DVD player of expression.
Fig. 2 is the optical disc apparatus of expression utilization according to audio frequency output regulating device of the present invention, for example: the formation synoptic diagram of an embodiment of DVD player.
Fig. 3 is the workflow diagram of expression according to an embodiment of the audio frequency output adjusting method of optical disc apparatus of the present invention.
The symbol description of major part in the accompanying drawing:
10:MPEG demoder 20: digital/analog converter
31: the 2 amplifiers of 30: the 1 amplifiers
40: impact damper 50: the audio frequency input-output unit
60: Port Multiplier 70: microcomputer
80: speaker amplifier 81: loudspeaker
82: earphone
Embodiment
Below, audio frequency output regulating device and the control method thereof to the optical disc apparatus of foundation embodiments of the invention is described in more details with reference to the accompanying drawings.
Fig. 2 is the optical disc apparatus of expression utilization according to audio frequency output regulating device of the present invention, for example: the formation synoptic diagram of an embodiment of DVD player.As shown in the figure, it comprises following components: will carry out decoding processing according to the MPEG mode from the voice data that CD reads out, then with the mpeg decoder 10 of its output; With the above-mentioned digital/analog converter (DAC) 20 that is converted to simulated audio signal through the voice data of exporting after the decoding processing; To carry out the 1st amplifier 30 that amplification is handled by the simulated audio signal after the above-mentioned DAC20 conversion according to the yield value of having set; According to the yield value of having set will through above-mentioned the 1st amplifier 30 carry out after amplification is handled sound signal once more according to the rules size carry out the 2nd amplifier 31 that amplification is handled; The sound signal that above-mentioned the 1st amplifier 30 carries out after amplification is handled is carried out buffered, then, with its impact damper of exporting to audio frequency input-output unit 50 40; The Port Multiplier of exporting selectively from the sound signal of above-mentioned audio frequency input-output unit 50, above-mentioned amplifier 1 (30), above-mentioned amplifier 2 (31) outputs by conversion and control 60; Sound signal that will be by 60 outputs of above-mentioned Port Multiplier is carried out volume according to the user and is regulated the volume of setting and carry out the amplification processing.Then, again with its speaker amplifier of exporting to the outside by loudspeaker 81 or earphone 82 80; And the kind of CD that insert to install differentiated the microcomputer of controlling according to above-mentioned differentiation result and to the switching motion of above-mentioned Port Multiplier 60 70 then.
As mentioned above, in the foundation embodiments of the invention, DVD and CD for DVD player can be play owing to consider that the audio storage standard of two kinds of disks is different, just add being provided with the 2nd amplifier 31.Therefore, be DVD or CD no matter insert the CD that is installed in the above-mentioned DVD player, can export the volume of respective standard according to the user to the adjusting of volume.
In addition, for above-mentioned the 1st amplifier 30 and the 2nd amplifier 31, they have mutually different yield value respectively.Above-mentioned yield value is to set according to the relative different of the audio storage standard of disc types.Like this, the sound signal of the CD that relative audio storage standard is lower, the volume of its output audio can be carried out suitable adjusting by above-mentioned amplifier 2 (31).
As a reference, for the audio storage standard of DVD, it be equivalent to Vrms (actual effect average voltage) be the CD that sets of benchmark the audio storage standard 80%.
Fig. 3 is the workflow diagram of expression according to an embodiment of the audio frequency output adjusting method of optical disc apparatus of the present invention.Below, will be described in more details the operational process of device shown in Figure 2 and audio frequency output adjusting method shown in Figure 3.
S10, at first, for above-mentioned microcomputer 70, it can be differentiated the kind of inserting the CD of installing.For concerning the differentiation process of above-mentioned CD, because therefore the ordinary skill that DVD and CD are distinguished that it can adopt that everybody is familiar with, just no longer carries out clear specifically here to it.
S20, S21, in addition, according to user's playing request, digital audio-frequency data and the above-mentioned DAC20 that above-mentioned mpeg decoder 10 is taken out from optical disk reading is converted to simulated audio signal S21 from inserting the digital audio-frequency data that reads out in the CD of installing respectively.
S22, then, above-mentioned the 1st amplifier 30 carries out amplification processing to above-mentioned through the simulated audio signal after the conversion according to the yield value of having set.Then, export to above-mentioned audio frequency input-output unit 50 by above-mentioned impact damper 40 through the sound signal after the amplification processing above-mentioned.
S23, in addition, import to above-mentioned the 2nd amplifier 31 and above-mentioned Port Multiplier 60 through the sound signal after the amplification processing above-mentioned respectively, then, above-mentioned the 2nd amplifier 31 will carry out the amplification processing through the sound signal that above-mentioned the 1st amplifier 30 carries out after amplification is handled once more according to the yield value of having set, and then it is exported by above-mentioned Port Multiplier 60.
S24 like this, just will transmit to above-mentioned Port Multiplier 60 respectively by the signal of above-mentioned audio frequency input-output unit the 50, the 1st amplifier the 30, the 2nd amplifier 31 outputs.Then, above-mentioned Port Multiplier 60 will be exported selectively at the above-mentioned input signal after the conversion under the control of above-mentioned microcomputer 70.Differentiating the CD that above-mentioned insertion installs when above-mentioned microcomputer 70 is under the situation of CD, and then above-mentioned Port Multiplier 60 sound signal that just selection can provide to above-mentioned the 1st amplifier 30 from the sound signal of above-mentioned input under the control of above-mentioned microcomputer 70 is also exported it.
But, differentiating the CD that above-mentioned insertion installs when above-mentioned microcomputer 70 in said process is under the situation of DVD, and then above-mentioned Port Multiplier 60 sound signal that just selection can provide to above-mentioned the 2nd amplifier 31 from the sound signal of above-mentioned input under the control of above-mentioned microcomputer 70 is also exported it.
S25, in addition, for above-mentioned speaker amplifier 80, it can carry out volume according to the user and regulate the volume standard of setting, and handles selecting the sound signal of output to carry out corresponding amplification by above-mentioned Port Multiplier 60.Then, with its according to audible sound frequently the standard of volume export to the outside by above-mentioned loudspeaker 81 or above-mentioned earphone 82.
As mentioned above, in the foundation embodiments of the invention, owing to consider the kind difference of CD, the storage standards of sound signal is also different, therefore just according to the variety classes of CD the amplification standard of playing audio signal is changed.Like this, under the situation that the user regulates volume, no matter the kind of CD how, just can be exported the audio volume of identical size.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (6)
1, a kind of audio frequency of optical disc apparatus output regulating device is the optical disc apparatus that can play the CD more than 2 kinds, it is characterized in that being made of following components:
To be converted to the sound signal of simulating signal from the data that CD reads out, according to the yield value of having set it be carried out the 1st amplifier that amplification is handled the line output of going forward side by side then;
According to the yield value of having set above-mentioned sound signal through amplification processing back output is carried out the 2nd amplifier that amplification is handled the line output of going forward side by side once more;
In respectively by a plurality of sound signals of above-mentioned the 1st amplifier and above-mentioned the 2nd amplifier input, select the go forward side by side Port Multiplier of line output of more than one signal;
And the kind of the CD that above-mentioned insertion is installed differentiates, then the microcomputer of controlling according to above-mentioned differentiation result and to the signal selection course of above-mentioned selection equipment.
2, the audio frequency of optical disc apparatus as claimed in claim 1 output regulating device is characterized in that:
Above-mentioned the 1st amplifier and the 2nd amplifier have different yield values respectively, and above-mentioned yield value is to set according to the relative different of the audio storage standard of disc types.
3, the audio frequency of optical disc apparatus as claimed in claim 1 output regulating device is characterized in that:
Above-mentioned microcomputer can be controlled above-mentioned Port Multiplier, thereby can select output to following signal, promptly under the situation that above-mentioned differentiation result be CD from the sound signal of above-mentioned the 1st amplifier input with in the sound signal of above-mentioned differentiation result for importing from above-mentioned the 2nd amplifier under the situation of DVD.
4, the audio frequency of optical disc apparatus as claimed in claim 1 output regulating device is characterized in that also comprising with the lower part:
To regulate the volume standard of setting according to the user by audio frequency from the sound signal of above-mentioned Port Multiplier output and carry out corresponding amplification processing, then, again with its speaker amplifier of exporting by loudspeaker or earphone.
5, a kind of audio frequency output adjusting method of optical disc apparatus is the method that the CD more than 2 kinds can be play by single playing device, it is characterized in that being made of following step;
The 1st step will be converted to the sound signal of simulating signal from the data that CD reads out, and according to the yield value set it be carried out that amplification is handled then and with its output;
The 2nd step carries out once more with the above-mentioned sound signal of handling back output through amplification that amplification is handled and with its output according to the yield value of having set;
The 3rd step, the CD of installing according to above-mentioned insertion all kinds of, the sound signal of will be in above-mentioned the 1st step or the 2nd step handling back output through amplification is selected and with its output; And
The 4th step is carried out amplification with the sound signal of exporting after the above-mentioned selection and is treated to audible sound signal frequently, and exports to the outside.
6, the audio frequency output adjusting method of optical disc apparatus as claimed in claim 5 is characterized in that:
In above-mentioned the 4th step, the sound signal of above-mentioned selection output can be carried out volume according to the user and regulate the volume standard of setting it is carried out corresponding amplification processing, and then it is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510030212 CN1941135A (en) | 2005-09-29 | 2005-09-29 | Audio-frequency outputting adjusting device and method for disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510030212 CN1941135A (en) | 2005-09-29 | 2005-09-29 | Audio-frequency outputting adjusting device and method for disk |
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| Publication Number | Publication Date |
|---|---|
| CN1941135A true CN1941135A (en) | 2007-04-04 |
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ID=37959213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510030212 Pending CN1941135A (en) | 2005-09-29 | 2005-09-29 | Audio-frequency outputting adjusting device and method for disk |
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| Country | Link |
|---|---|
| CN (1) | CN1941135A (en) |
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- 2005-09-29 CN CN 200510030212 patent/CN1941135A/en active Pending
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