CN203631134U - Recording and playing circuit of remote control car model - Google Patents
Recording and playing circuit of remote control car model Download PDFInfo
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- CN203631134U CN203631134U CN201320785703.0U CN201320785703U CN203631134U CN 203631134 U CN203631134 U CN 203631134U CN 201320785703 U CN201320785703 U CN 201320785703U CN 203631134 U CN203631134 U CN 203631134U
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a recording and playing circuit of a remote control car model, which comprises a micro-processing unit and an amplifying unit, wherein the micro-processing unit is connected to a memory, an A/D (Analogue-Digital) conversion unit and a D/A conversion unit; the output of the amplifying unit is connected to the A/D conversion unit; the input of the amplifying unit is connected to a microphone; the micro-processing unit, the memory, the amplifying unit, the A/D conversion unit and the D/A conversion unit are integrated in a chip. The recording and playing circuit of the remote control car model disclosed by the utility model has the beneficial effects that the PWM (Pulse-Width Modulation) output is replaced by the DAC (Digital-to-Analogue Converter) output, and the cost is very low; furthermore, the interference problem is effectively solved, and signal receiving cannot be interfered when recorded sound is played under remote control.
Description
Technical field
The utility model relates to wireless remote-vehicle mould field, relates in particular to a kind of technology that is applied to toy car mould sounding, particularly telecar mould recording playing circuit.
Background technology
In prior art, at toy industry, especially, in car line industry, manufacturing cost has become the Main Means of numerous manufacturers as competition; Minimize cost and can guarantee that product performance index has been the target that everybody competitively pursues.
On market comparatively popular remote control can the car mould of playback sound in, prior art is all that wireless remote control IC and record/playback IC are selected to PWM output form, this output form exists playback to disturb the problem of wireless receiving, makes in the time of playback closely remote control.
Above-mentioned drawback is coverd with shade to the application prospect of product.
If head it off, the device cost that many high-end applications technology adopt can be high, and this is that this product institute is unallowable.
Utility model content
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of telecar mould recording playing circuit, technology recording and playing circuit of the present utility model selects DAC mode to export, solve interference problem, the reception that when long-distance remote control, playback can undesired signal.
For achieving the above object, the utility model is achieved through the following technical solutions.
Manufacture a kind of telecar mould recording playing circuit, comprising: a microprocessing unit, connect a storer, also connect A/D converting unit and D/A converting unit;
The output of one amplifying unit connects A/D converting unit, and the input of amplifying unit connects microphone.
Described microprocessing unit also connects triggering 1 node, triggers 2 nodes.
Microprocessing unit connects recording switch.
Microprocessing unit, storer, amplifying unit, A/D converting unit and D/A converting unit are integrated among a slice chip.
The beneficial effects of the utility model are: the utility model recording and playing circuit is selected DAC mode to export to substitute PWM mode and exported, and cost is very low, and efficiently solves interference problem, the reception that when long-distance remote control, playback can undesired signal.
Accompanying drawing explanation
Utilize accompanying drawing to be further detailed the utility model below, but the embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the control principle block scheme that recording and playing circuit of the present utility model selects DAC mode to export;
Fig. 2 is the electrical schematic diagram of telecar mould recording playing circuit of the present utility model.
In Fig. 1～Fig. 2, include:
1---microprocessing unit
2---storer
3---microphone
4---amplifying unit
5---A/D converting unit
6---D/A converting unit
7---loudspeaker.
Embodiment
Below in conjunction with concrete embodiment, the utility model is described.
As shown in Fig. 1～Fig. 2,
Design a kind of telecar mould recording playing circuit, described circuit comprises:
One microprocessing unit 1 connects a storer 2, also connects A/D converting unit 5 and D/A converting unit 6;
The output of one amplifying unit 4 connects A/D converting unit 5, and the input of amplifying unit 4 connects microphone 3.
Described microprocessing unit 1 also connects triggering 1 node, triggers 2 nodes.
The IC that drives recording acoustics unit 21 to adopt the output of DAC pattern to drive, model comprises ISO18824X series and compatible model.
Principle of the present utility model is as follows:
With reference to Fig. 2, press recording switch, to record by microphone 3, sound signal is amplified through amplifying unit 4, then transfers digital signal to through A/D converting unit 5, then is controlled by microprocessing unit 1, deposits this digital signal in storer 2.
Need to play this audio frequency time, trigger 1 node or trigger 2 nodes being triggered, this digital signal that microprocessing unit 1 calls in storer 2 arrives D/A converting unit 6, transfers digital signal to sound signal and plays back from loudspeaker 7.
Owing to adopting D/A translative mode, determine through lot of experiments, can not disturb again the reception of wireless remote control signals.
Comprehensive above-mentioned situation is known, the utlity model has saving cost, the advantage of dependable performance.Efficiently solve interference problem, the reception that when long-distance remote control, playback can undesired signal.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (4)
1. a telecar mould recording playing circuit, is characterized in that, described jamproof circuit comprises:
One microprocessing unit (1) connects a storer (2), also connects A/D converting unit (5) and D/A converting unit (6);
The output of one amplifying unit (4) connects A/D converting unit (5), and the input of amplifying unit (4) connects microphone (3).
2. a kind of telecar mould recording playing circuit according to claim 1, is characterized in that:
Described microprocessing unit (1) also connects triggering 1 node, triggers 2 nodes.
3. a kind of telecar mould recording playing circuit according to claim 1, is characterized in that: microprocessing unit (1) connects recording switch.
4. a kind of telecar mould recording playing circuit according to claim 1, is characterized in that: microprocessing unit (1), storer (2), amplifying unit (4), A/D converting unit (5) and D/A converting unit (6) are integrated among a slice chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785703.0U CN203631134U (en) | 2013-12-04 | 2013-12-04 | Recording and playing circuit of remote control car model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785703.0U CN203631134U (en) | 2013-12-04 | 2013-12-04 | Recording and playing circuit of remote control car model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203631134U true CN203631134U (en) | 2014-06-04 |
Family
ID=50817591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320785703.0U Expired - Fee Related CN203631134U (en) | 2013-12-04 | 2013-12-04 | Recording and playing circuit of remote control car model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203631134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066036A (en) * | 2014-06-19 | 2014-09-24 | 华为技术有限公司 | Sound pickup device and sound pickup method |
-
2013
- 2013-12-04 CN CN201320785703.0U patent/CN203631134U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066036A (en) * | 2014-06-19 | 2014-09-24 | 华为技术有限公司 | Sound pickup device and sound pickup method |
| US10015591B2 (en) | 2014-06-19 | 2018-07-03 | Huawei Technologies Co., Ltd. | Pickup apparatus and pickup method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20171204 |