CN105390153B - Low-power consumption digital voice recorder - Google Patents
Low-power consumption digital voice recorder Download PDFInfo
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- CN105390153B CN105390153B CN201510494631.8A CN201510494631A CN105390153B CN 105390153 B CN105390153 B CN 105390153B CN 201510494631 A CN201510494631 A CN 201510494631A CN 105390153 B CN105390153 B CN 105390153B
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- power supply
- switch
- passage
- microphone
- microcomputer
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Direct Current Feeding And Distribution (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention relates to a kind of low-power consumption digital voice recorder, the low-power consumption digital voice recorder of an embodiment according to the present invention includes: power supply unit, supplies power supply；Microphone is electrically connected by first passage with the power supply unit, the sound being entered is converted to audio signal and is exported；Amplifier is electrically connected with the power supply unit by first passage, and the audio signal exported from the microphone is amplified and is exported；The audio signal amplified in the amplifier is converted to digital signal and exported by microcomputer；Memory is stored in the digital signal converted in the microcomputer；And switch unit, it is electrically connected with the power supply unit by first passage, is electrically connected with the microcomputer and memory, wherein when having from the audio signal that the amplifier exports, the switch unit is electrically connected the first passage with the microcomputer and memory.According to the present invention, when the sound being entered not over microphone, only electric power is supplied to Microphone And Amplifier, therefore, power consumption is greatly reduced compared with prior art, using identical capacity batteries, increase by tens times than the prior art as the time that recording standby is run in no voice input.
Description
Technical field
The present invention relates to a kind of low-power consumption digital voice recorders using battery, can sense quilt more particularly, to one kind
The sound of input and the low-power consumption digital voice recorder that memory is only stored it in when sound is entered.
Background technique
Carrying digital voice recorder is the product recorded and played by semiconductor memory systems such as flash memories.It is general and
Speech, in Recording Process, regardless of continuing to record, it is thus impossible to effectively make whether there is or not the sound being entered by microphone
With the memory capacity of restriction.
As a kind of method to solve the above problems, memory only is stored it in when sensing sound and is recorded,
And when there is no sound, it is not stored in memory and is waited, thus, it is only recorded and is efficiently used when there is sound
Memory.
Fig. 1 is the attached drawing for showing the sound sensing circuit of existing digital voice recorder.To solve the above problems, existing digital recording
Sound machine (10) constitutes circuit as shown in Figure 1, in power supply and microphone (12), amplifier (13), microcomputer (14) and memory
(15) in the state of connecting, sound sensing is executed.
Sound is converted to electric signal in microphone (12), and signal amplifies in the amplifier, passes through analog-digital converter quilt
Digital signal is converted to, microcomputer (14) identifies the digital value converted, only stores it in memory when there is sound as a result,.
Judging sound by the digital signal converted because of microcomputer (14), whether there is or not as shown in Figure 1, existing sound sensing
Circuit be configured so that power supply unit (11) by electric power continue to be supplied to microphone (12), amplifier (13), microcomputer (14) and
Memory (15).Although being not stored in memory as a result, and waiting recording not inputting sound by microphone (12)
When also power supply unit (11) Xiang Suoyou element (12,13,14,15) continue supply electric power, therefore, waste electric power, because battery use
Limited time and need continually to charge or communicating battery, make troubles to user.
Summary of the invention
Problems to be solved by the invention
The technical problem to be solved in the present invention is to provide one kind minimum electric power is supplied when sound is not entered and can
Make the low-power consumption digital voice recorder of minimum power consumption.
The solution to the problem
The low-power consumption digital voice recorder of an embodiment according to the present invention includes: power supply unit, supplies power supply；Microphone,
It is electrically connected with the power supply unit by first passage, the sound being entered is converted into audio signal and is exported；Amplifier, with
The power supply unit is electrically connected by first passage, and the audio signal exported from the microphone is amplified and is exported；Microcomputer, will
The audio signal amplified in the amplifier is converted to digital signal and exports；Memory is stored and is converted in the microcomputer
Digital signal；And switch unit, be electrically connected with the power supply unit by first passage, in the microcomputer and memory at least
One electrical connection, wherein when having from the audio signal that the amplifier is exported, the switch unit makes the first passage
It is electrically connected at least one in the microcomputer and memory.
The microphone may also include resistance, which is arranged between the microphone and the first passage, so as to
Minimum microphone bias voltage is supplied from the power supply unit by the first passage.And, it is preferable that the switch unit packet
It includes: first switch, according to presence or absence unlatching/closing of the audio signal exported from the amplifier；And second switch, according to
Unlatching/closing of the first switch, is electrically connected the first passage with microphone.At this point, the microphone is described in
Second switch can receive power supply from the power supply unit through the first passage.
In addition, the switch unit can include: first switch, according to the presence of the audio signal exported in the amplifier
Whether open/close；And third switch makes the first passage and microcomputer or deposits according to unlatching/closing of the first switch
At least one in reservoir is electrically connected.
The effect of invention
According to the present invention, with microcomputer by the digital signal converted continue sense sound whether there is or not and consume a large amount of electric power
The prior art on the contrary, based on the analog signal through amplifier, first switch judge the sound being entered by microphone whether there is or not, when
When not having sound, electric power only is supplied to microphone and amplifier, therefore, power consumption reduces by tens times compared with prior art,
There is no sound and wait the time of recording longer, service time of battery is also longer.
Also, those skilled in the art belonging to the present invention should be appreciated that effect of the invention is not limited to institute
Effect is stated, and implementation form according to the present invention can reach various effects.
Detailed description of the invention
Fig. 1 is the attached drawing for showing the sound sensing circuit of existing digital voice recorder.
Fig. 2 is the attached drawing for showing the digital voice recorder of an embodiment according to the present invention.
Fig. 3 is the attached drawing for showing the sound sensing circuit of digital voice recorder of an embodiment according to the present invention.
Description of symbols
100: digital voice recorder
110: power supply unit 120: microphone
130: amplifier 140: microcomputer (including analog-digital converter)
150: memory 160: switch unit
Q1, Q2, Q3: first switch, second switch, third switch
P1, P2: first passage, second channel
Specific embodiment
With reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Fig. 2 is the attached drawing for indicating the digital voice recorder of an embodiment according to the present invention, and Fig. 3 is to indicate according to the present invention
The attached drawing of the sound sensing circuit of the digital voice recorder of one embodiment.
As shown in Fig. 2, digital voice recorder (100) of the invention includes power supply unit (110), microphone (120), amplifier
(130), microcomputer (140), memory (150) and switch unit (160).
Power supply unit (110) is to microphone (120), amplifier (130), switch unit (160), microcomputer (140) and stores
Device (150) supplies power supply.In one embodiment of this invention, power supply unit (110) can be the common power supply supplied from outside, or
It can or secondary cell primary for battery etc..
Also, it in one embodiment of this invention, power supply unit (110) and microphone (120), amplifier (130) and opens
It closes unit (160) and is directly electrically connected by first passage (P1), but is non-with at least one in microcomputer (140) and memory (150)
It is directly connected to.
The sound being entered is converted to analog audio signal by microphone (120).In one embodiment of this invention, Mike
Wind (120) is electrically connected from power supply unit (110) with power supply unit (110) by first passage (P1) and receives power supply, but is passed through
First passage (P1) only receives the minimum electric power for driving.I.e. as shown in figure 3, first passage (P1) and microphone (120) it
Between be provided with first resistor, and supply minimum microphone bias voltage by first resistor.
Amplifier (130) amplifies the audio signal exported from microphone (120), usually amplifies from microphone (120) quilt
The signal of output.Also, amplifier (130) is electrically connected by first passage (P1) with power supply unit (110).Therefore, amplifier
(130) with the voice input to microphone (120) unrelated whether, and continue to be powered.
Analog signal, that is, the audio signal amplified in amplifier (130) is converted to digital signal by microcomputer (140).And
And it is controlled such that the digital signal converted is stored in memory (150).In addition, microcomputer (140) passes through second channel
(P2) it is powered the electric power that unit (110) is supplied and is acted.As shown in figure 3, second channel (P2) is by opening
Close the channel that unit (160) are electrically connected with first passage (P1).
Memory (150) is controlled by microcomputer (140), and is received and be stored in the digital signal converted in microcomputer (140).
Also, in the same manner as microcomputer (140), memory (150) is powered what unit (110) was supplied by second channel (P2)
Electric power and acted.Therefore, when by second channel (P2), power is supplied, microcomputer (140) and memory (150) are no
It is acted.
In the embodiment shown in fig. 3, it is shown that microcomputer (140) and memory (150) are located at second channel (P2), but
In another embodiment, one can be connect with first passage (P1) or can by other channel in microcomputer (140) or memory (150)
It is directly connected to power supply unit (110).
Switch unit (160) is electrically connected by first passage (P1) with power supply unit (110), with microphone bias voltage and microcomputer
(140) or at least one in memory (150) is electrically connected.In one embodiment of this invention, switch unit (160) basis is being put
The presence or absence for the audio signal amplified in big device (130) carries out opening/closing motion.Amplify in having amplifier (130)
When audio signal, switch unit (160) is opened, so that the electric power that power supply unit (110) is supplied is supplied to microphone bias voltage
And at least one in microcomputer (140) or memory (150).
For this purpose, as shown in figure 3, switch unit (160) switchs (Q1, Q2, Q3) including first to third.First switch (Q1)
It is electrically connected with amplifier (130), is acted according to the presence or absence of the audio signal exported from amplifier (130).Second
Switch (Q2) be located between power supply unit (110) and microphone bias voltage, and according to first switch (Q1) whether open/close and into
Action is made.In addition, third switch (Q3) be located at first passage (P1) and at least one in microcomputer (140) or memory (150)
Between the second channel (P2) of electrical connection, and whether opens/close and acted according to first switch (Q1).
When not inputting sound by microphone (120), power supply is only supplied to microphone (120) bias and amplifier
(130), and minimum power is supplied to microphone bias voltage.Also, it, will be by most when inputting sound by microphone (120)
The sound that small microphone bias voltage is entered is converted to analog audio signal and and exports.The simulation exported from microphone (120)
Audio signal amplification in amplifier (130).
When the analog audio signal amplified in the amplifier (130) is exported, first switch (Q1) sense the signal and
It opens, as first switch (Q1) is opened, second and third switch (Q2, Q3) senses the unlatching of first switch (Q1) and opens.
Second switch (Q2) is located between the first passage (P1) of power supply unit (110) and microphone bias voltage, with second switch (Q2)
It opens, microphone bias voltage is added into normal range (NR).
Also, third switch (Q3) is located between first passage (P1) and second channel (P2), as third switchs (Q3)
It opens, is electrically connected first passage (P1) with second channel (P2).Such first passage (P1) and second channel (P2) are electric each other
At least one in connection, Xiang Weiji (140) or memory (150) transmits the electric power being supplied from power supply unit (110).
Therefore, the sound being entered by microphone (120) is turned by means of adding to the microphone bias voltage of normal range (NR)
It is changed to analog audio signal and is exported, the analog audio signal exported amplifies simultaneously by amplifier (130) and microcomputer (140)
It is converted into digital signal, and is stored in memory (150).
As described above, when being not input to the sound of microphone (120), only to microphone bias voltage and amplifier
(130) apply power supply, and do not apply power supply to remaining element, therefore, electric power can be greatly reduced compared with prior art and disappeared
Consumption.To, when using identical capacity batteries, digital voice recorder (100) according to the present invention, record due to as voiceless sound to
The time that machine can be run can increase by tens times than existing digital voice recorder.
To sum up, specific embodiments of the present invention are illustrated referring to attached drawing, but the above embodiments merely illustrate
Preferred example of the invention, therefore be not construed as the present invention and be only confined to the above embodiments, it is clear that protection of the invention
Range should be understood with the content and its equivalents of claims.
Claims (4)
1. a kind of low-power consumption digital voice recorder, comprising:
Power supply unit supplies power supply；
Microphone is electrically connected with the power supply unit by first passage, and the sound being entered is converted to audio signal and defeated
Out；
Amplifier is electrically connected by first passage with the power supply unit, the audio signal exported from the microphone is put
It exports greatly；
The audio signal amplified in the amplifier is converted to digital signal and exported by microcomputer；
Memory stores the digital signal converted in the microcomputer；And
Switch unit is electrically connected with the power supply unit by first passage, at least one electricity in the microcomputer and memory
Connection,
Wherein, when having from the audio signal that the amplifier is exported, the switch unit make the first passage with it is described
At least one in microcomputer and memory is electrically connected；
Wherein, default minimum microphone bias voltage is supplied to the microphone from power supply by the first passage；
Wherein, the switch unit includes first switch and the second switch, and the first switch is according to defeated from the amplifier
The presence or absence of audio signal out open/close and the second switch is according to unlatching/pass of the first switch
It closes and open/close.
2. low-power consumption digital voice recorder according to claim 1, wherein the microphone further includes resistance, the resistance cloth
It sets between the microphone and first passage, connects the power supply unit will pass through the first passage.
3. low-power consumption digital voice recorder according to claim 1, wherein the microphone passes through the second switch, warp
The first passage receives power supply from the power supply unit.
4. low-power consumption digital voice recorder according to claim 1, wherein the switch unit includes:
First switch, according to the presence or absence of the audio signal exported in the amplifier unlatching/closing；And third switch, root
According to unlatching/closing of the first switch, it is electrically connected the first passage with microcomputer and memory.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140109085A KR101608320B1 (en) | 2014-08-21 | 2014-08-21 | Low-power digital voice recorder |
| KR10-2014-0109085 | 2014-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390153A CN105390153A (en) | 2016-03-09 |
| CN105390153B true CN105390153B (en) | 2019-06-28 |
Family
ID=55422364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510494631.8A Active CN105390153B (en) | 2014-08-21 | 2015-08-12 | Low-power consumption digital voice recorder |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101608320B1 (en) |
| CN (1) | CN105390153B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161972Y (en) * | 1993-08-07 | 1994-04-13 | 西安海博国际高新技术有限公司 | Low power consumption minisize speech sounds memory device |
| JPH0917059A (en) * | 1995-06-28 | 1997-01-17 | Olympus Optical Co Ltd | Voice activating recorder |
| WO2000070420A1 (en) * | 1999-05-17 | 2000-11-23 | Nmb (Usa) Inc. | Switching power supply for lowered distribution system disturbance |
| CN201499278U (en) * | 2009-06-30 | 2010-06-02 | 杨辉隆 | Microphone |
-
2014
- 2014-08-21 KR KR1020140109085A patent/KR101608320B1/en active IP Right Grant
-
2015
- 2015-08-12 CN CN201510494631.8A patent/CN105390153B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161972Y (en) * | 1993-08-07 | 1994-04-13 | 西安海博国际高新技术有限公司 | Low power consumption minisize speech sounds memory device |
| JPH0917059A (en) * | 1995-06-28 | 1997-01-17 | Olympus Optical Co Ltd | Voice activating recorder |
| WO2000070420A1 (en) * | 1999-05-17 | 2000-11-23 | Nmb (Usa) Inc. | Switching power supply for lowered distribution system disturbance |
| CN201499278U (en) * | 2009-06-30 | 2010-06-02 | 杨辉隆 | Microphone |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160025638A (en) | 2016-03-09 |
| KR101608320B1 (en) | 2016-04-01 |
| CN105390153A (en) | 2016-03-09 |
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