CN207115006U - The projection arrangement of generation simulation piano - Google Patents
The projection arrangement of generation simulation piano Download PDFInfo
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- CN207115006U CN207115006U CN201720647228.9U CN201720647228U CN207115006U CN 207115006 U CN207115006 U CN 207115006U CN 201720647228 U CN201720647228 U CN 201720647228U CN 207115006 U CN207115006 U CN 207115006U
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Abstract
A kind of projection arrangement for generating simulation piano, including：Projection module, fingerboard image is generated for projecting, and follow the trail of the contact position of user and fingerboard image, contact position is generated into data message；Message processing module, it is connected with projection module, for handling data message, generates voice data, voice data is used to drive audio frequency apparatus sounding；Sound signal transmission facilities, it is connected with message processing module, for transmitting voice data.The projection arrangement of above-mentioned generation simulation piano takes up space small, and cost is low, and effect, form with true piano more closely, bringing more interests to user.
Description
Technical field
It the utility model is related to projection field, more particularly to a kind of projection arrangement for generating simulation piano.
Background technology
Now, the popularization face of piano is not high, possesses the sub-fraction of the Jin Zhan social groups of family of piano, is first steel
Qin is expensive, second, the volume of piano is larger, can occupy many spaces, and the piano having in cell phone software now should
With though the key and sound of piano can be simulated, having been limited because of the size of mobile phone screen, piano application can not make user
The beautiful of piano is enjoyed as on the spot in person, a part of music-lover can not be Myself the music liked.For example, it please join
Fig. 1 is examined, is a kind of piano application of the prior art, because of the limitation of mobile phone screen, only has 6 white keys and 4 in piano application
Individual black key, and general entity piano has 88 keys, key number and the key number phase of entity piano in piano application
Difference is very remote, is illustrated with this, and piano application can not be supplied to user to intend genuine piano playing experience, can not also provide all of piano
Tone, then playing effect also can not necessarily be compared favourably with entity piano.
With the development of science and technology, shadow casting technique is further perfect, so as to bring many projection products, and it is related to face more
Extensively, such as projector, projector is not only very popular in office space as novel office equipment, is also frequently found in classroom
His figure, it can be used for imparting knowledge to students, give a lecture, the various places such as meeting, be brought great convenience for people, it can be with calculating
The equipment such as machine, work station are attached, so as to which the data message in computer or work station is presented on smooth surface, no
Only imaging clearly, and reduce demonstration cost as carrier is presented without liquid crystal display etc..
And with the development of science and technology, present projected keyboard, shadow casting technique is mutually tied with internet data treatment technology
Close, be not limited only to be imaged, and can be with user interaction, the operation to user analyzes and processes, such as projected keyboard, can
Keyboard is incident upon a certain smooth surface, user can operate to the keyboard of projection, as using real keyboard.
So needing to provide a kind of projection arrangement for generating simulation piano, enough lower costs are enabled users to, are obtained such as
Use the experience effect as entity piano.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of projection arrangement for generating simulation piano.
In order to solve the above problems, the utility model provides a kind of projection arrangement for generating simulation piano, including：Projection
Module, fingerboard image is generated for projecting, and follow the trail of the contact position of user and the fingerboard image, connect described
Touch position generation data message；Message processing module, it is connected with the projection module, to the data message
Reason, generates voice data, and the voice data is used to drive audio frequency apparatus sounding；At sound signal transmission facilities, with described information
Module connection is managed, for transmitting voice data.
Optionally, in addition to：Audio frequency apparatus, it is connected with the sound signal transmission facilities, for receiving voice data, and broadcasts
Put audio corresponding with the voice data.
Optionally, the projection module includes：Projecting apparatus, for projecting generation fingerboard image in smooth flat；It is red
Outer image acquisition device, it is connected with the projecting apparatus, for obtaining the fingerboard image and key position information；Infrared laser
Locator, it is connected with the infrared image acquisition device, for following the trail of the contact position of the user and the fingerboard image,
The contact position is generated into data message.
Optionally, in addition to：Mode selection module, it is connected with described information processing module, for the operation according to user,
Select contextual model.
Optionally, described information processing module includes：Processing unit, it is connected with the mode selection module, for basis
Contextual model selected by user, is adjusted to voice data.
Optionally, in addition to：Data transmission module, it is connected with described information processing module, for voice data to be transmitted
To the network platform.
Optionally, in addition to：Teacher's module, it is connected with the projection module, for the piano music score of Chinese operas selected according to user,
The key position in the music score of Chinese operas corresponding to note is prompted on fingerboard image.
Optionally, in addition to：Memory module, be connected with teacher's module, for store the piano music score of Chinese operas and with it is described
Piano playing method corresponding to the piano music score of Chinese operas.
Optionally, in addition to：Housing, the projection module are built in the housing, and the housing has through hole, the throwing
Shadow module is by the through hole to housing outer projection fingerboard image.
The projection arrangement of generation simulation piano of the present utility model, passes through projection module, message processing module, audio signal
Mutual cooperation between transmitter, fingerboard is projected in smooth flat, and follows the trail of operating position of the user in fingerboard,
It is corresponding with the function of fingerboard according to the operating position of user, voice data corresponding with user's operating position is generated, and
Voice data corresponding to transmission, make user as using real piano.This projection arrangement takes up space small, and cost is low, and
Effect, form are with true piano more closely, bringing more interests to user.
Brief description of the drawings
Fig. 1 is the schematic diagram that the mobile terminal piano of prior art is applied；
Fig. 2 is the modular structure signal of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Figure；
Fig. 3 is the modular structure signal of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Figure；
Fig. 4 is the modular structure signal of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Figure；
Fig. 5 is the modular structure signal of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Figure；
Fig. 6 is the modular structure signal of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Figure；
Fig. 7 is the step flow chart of the method for work of the projection arrangement of the embodiment of the utility model one；
Fig. 8 is the step flow chart of the method for work of the projection arrangement of the embodiment of the utility model one；
Fig. 9 is the step flow chart of the method for work of the projection arrangement of the embodiment of the utility model one.
Embodiment
The work of the projection arrangement and projection arrangement of piano is simulated to generation provided by the utility model below in conjunction with the accompanying drawings
The embodiment of method elaborates.
Fig. 2 is refer to, is the module knot of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Structure schematic diagram.
The projection arrangement of generation simulation piano includes：Projection module 201, fingerboard image is generated for projecting, and chased after
Track user and the contact position of fingerboard, data message is generated by contact position；Message processing module 202, with projection module
201 connections, for handling data message, voice data is generated, voice data is used to drive audio frequency apparatus sounding；Audio
Signal transmission device 203, it is connected with message processing module 202, for transmitting voice data.
Projection module 201, for being projected to smooth flat, fingerboard is set to be presented in smooth flat, piano key
The shape size of key and quantity etc. can be identical with the shape size and quantity of the key of entity piano in disk, make generation mould
It is more true to nature to intend the projection arrangement of piano, lifts playing effect.After projection finishes, if user operates to fingerboard,
Then follow the trail of operating position of the user on fingerboard, for example, user touched for white key, then position the white key
Position, generate data message, so that operation of the message processing module 202 to user is analyzed, so as to make corresponding sound
Should.
Message processing module 202, it is connected with projection module 201, the data message for being generated to projection module 201 enters
Row processing, specifically, when data message shows that the key that is contacted of user be white key, and its note be C1, is matched and the note
Corresponding tone, and voice data is generated, to drive audio frequency apparatus sounding；If data message shows the position that user is contacted
For functionality buttons, then the function corresponding to the button is handled, or transfer to other modules to be handled；If data message
The region that is contacted of display user is non-functional region, i.e., is not some key, nor some function button etc. need be
The region of system response, then do not operate to it and respond.
Audio information transmissions device 203, it is connected with signal processing module 202, when user needs voice data being converted into sound
During signal, sound signal transmission facilities 203 can be by voice data by modes such as data-interfaces or radio transmission, by voice data
Transmit to audio frequency apparatus, audio frequency apparatus is played audio corresponding with voice data.
Fig. 3 is refer to, in a specific implementation embodiment, the projection arrangement of generation simulation piano also includes：Audio is set
Standby 301, it is connected with sound signal transmission facilities 203, for receiving the voice data of sound signal transmission facilities transmission, audio frequency apparatus
301 can be the audio frequency apparatuses such as audio amplifier, earphone, after voice data is received, convert it into acoustical signal, play and audio number
According to corresponding audio.Wherein, audio frequency apparatus 301 can be built-in with that inside projection arrangement, can also pass through outside and projection arrangement
Connect work.
In an embodiment, the projection arrangement of generation simulation piano also includes：Data transmission module, for by sound
Frequency data transfer is to the network platform.User is after one section of music is played, message processing module 202 when can will play this section of melody
In voice data transmit to the network platform, for other people appreciate, this improve generation simulation piano projection arrangement entertaining
Property, and by the network platform, the popularity that the projection arrangement of piano is simulated in generation can be strengthened.
Fig. 4 is refer to, is the module knot of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Structure schematic diagram.
In an embodiment, projection module 201 includes：Projecting apparatus 401, for projecting generation steel in smooth flat
Piano key board image；Infrared image acquisition device 402, it is connected with projecting apparatus 401, for obtaining the image and key position of fingerboard
Information；Infrared laser locator 403, it is connected with infrared image acquisition device 402, for following the trail of contact position of the user with fingerboard
Put, contact position is generated into data message.
Projecting apparatus 401 is a projection device, has optical system, lamp power supply conjuncted and the composition such as camera lens, can will
Vision signal etc. is converted into image, and in this embodiment, fingerboard is incident upon a smooth flat by projecting apparatus, uses
Family can be played in the fingerboard position in smooth flat.
Infrared image acquisition device 402, it is connected with projecting apparatus 401, including optical system, scanner, image processor etc.,
After fingerboard is projected in a smooth flat by projecting apparatus 401, infrared image acquisition device is by collecting the red of scenery transmitting
External radiation, and infra-red radiation is converted into corresponding electric signal, so as to obtain the key and other work(that have in fingerboard
The image information of energy button etc., and the position range of key or button in image is positioned, so that user enters to fingerboard
During row operation, system can accurately obtain the key position information that user is contacted.
Infrared laser locator 403, be connected with infrared image acquisition device 402, message processing module 202, by optical system,
Detecting element, change-over circuit and signal processing system etc. are formed, and contact position of the user with fingerboard is determined by infrared ray
Put, contact position generated into data message, specifically, transmitting infrared ray shroud whole fingerboard image, when user's finger with
When fingerboard contacts, finger can shelter from infrared ray, so as to form hot spot, by obtaining the position of hot spot, so as to true
Determine the finger of user and the contact point of fingerboard, the figure that contact point and infrared image acquisition device 402 are gathered and position are believed
Breath is matched, so as to draw positional information that user is contacted.
In another embodiment, the projection arrangement of generation simulation piano also includes：Mode selection module, with information
Processing module 202 connects, and for the operation according to user, selects contextual model.Specifically, when user needs to make played sound
It is happy that different results of broadcast is presented, then it can select different contextual models, such as rock and roll wind, electric sound wind, wind etc. of missing old times or old friends, mould
Formula selecting module selectes a certain contextual model according to the operation of user, and by the data information transfer to message processing module
202, message processing module 202 is handled it.
In another embodiment, message processing module 202 includes：Processing unit, it is connected with mode selection module,
For the contextual model according to selected by user, voice data is adjusted, when a certain contextual model of user's selection, then in life
Into after voice data, the voice data is processed, the result of broadcast that the audio for playing voice data driving is presented,
Corresponding with the contextual model selected by user, this adds the interest of the projection arrangement of generation simulation piano.
Fig. 5 is refer to, is the module knot of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Structure schematic diagram.
In an embodiment, the projection arrangement of generation simulation piano also includes：Teacher's module 501, with projective module
Block 201 is connected, and for the piano music score of Chinese operas selected according to user, the sound in the music score of Chinese operas corresponding to note is prompted on fingerboard image
Key position.Need study to play a certain music score of Chinese operas specifically, working as user, the music score of Chinese operas can be recalled according to the selection operation of user, and
According to the playing method of the music score of Chinese operas, make corresponding key shinny, to prompt user how this presses key to play the music score of Chinese operas, its
In, make corresponding to key is shinny to be completed by projection module 201, in other embodiments, others can also be passed through
Method of operation teacher user how the piano music score of Chinese operas.
In an embodiment, the projection arrangement of generation simulation piano also includes：Memory module 502, with teacher's mould
Block 501 connects, for storing the piano music score of Chinese operas and piano playing method corresponding with the piano music score of Chinese operas.Specifically, user can lead to
The modes such as networking or local data transfer are crossed, the piano music score of Chinese operas and piano playing method corresponding with the piano music score of Chinese operas are stored in
In memory module 502, so that user is when needing the music score of Chinese operas to play or play the music score of Chinese operas, there is provided the piano music score of Chinese operas, and piano music
Playing method corresponding to spectrum, playing method are how user presses key, so as to complete the playing method of the piano music score of Chinese operas, i.e., bent
The matched data of note key corresponding with fingerboard image in spectrum.
Fig. 6 is refer to, is the structure mould of the projection arrangement of the generation simulation piano of the embodiment of the utility model one
Block schematic diagram.
In an embodiment, the projection arrangement of generation simulation piano also includes：Housing 601, in projection module 201
It is placed in housing 601, housing 601 has a through hole 602, and projection module 201 is by through hole 602 to the outer projection's fingerboard of housing 601
Image, in this embodiment, housing 601 are cuboid, and through hole 602 is ellipse, in other embodiments,
Housing 601 and through hole 602 can also be other shapes.Projection, infrared ray can be all irradiated by through hole, not influence projection dress
The function of putting, and can protect the internal structure of projection arrangement, and facilitate user to carry.
The projection arrangement of generation simulation piano of the present utility model, passes through projection module, message processing module, audio signal
Mutual cooperation between transmitter, fingerboard is projected in smooth flat, and follows the trail of operating position of the user in fingerboard,
It is corresponding with the function of fingerboard according to the operating position of user, voice data corresponding with user's operating position is generated, and
Voice data corresponding to transmission, make user as using real piano.This projection arrangement takes up space small, and cost is low, and
Effect, form are with true piano more closely, bringing more interests to user.
Fig. 7 is refer to, is the step flow chart of the application method of the projection arrangement of the embodiment of the utility model one.
The utility model also provides a kind of method of work of projection arrangement, including：
Step S701：Projection generation fingerboard image.Projected to smooth flat, be presented on fingerboard smooth
In plane, the shape size of key and quantity etc. can be with the shape sizes and quantity of the key of entity piano in fingerboard
It is identical, make projection arrangement more true to nature, lift playing effect.
Step S702：Follow the trail of user and the contact position of fingerboard image.After projection finishes, if user is to piano key
Disk is operated, then follows the trail of operating position of the user on fingerboard, for example, user touched for white key, then position
The position of the white key.
Step S703：Contact position is generated into data message.The positional information of positioning is generated into data message, for analysis
The operation of user, so as to make corresponding response.
Step S704：Data message is handled, generates voice data.Specifically, when data message shows user institute
The key of contact is white key, and its note is C1, matches tone corresponding with the note, and generates voice data, voice data
Audio frequency apparatus sounding can be driven；If data message shows that the region that user is contacted is non-functional region, i.e., it is not some
Key, nor some function button etc. needs the region that system responds, then it is not operated and responded.
Step S705：Transmit voice data., can be by voice data when user needs voice data being converted into acoustical signal
By modes such as data-interface or radio transmissions, voice data is transmitted to audio frequency apparatus, enable audio frequency apparatus play with
Audio corresponding to voice data.
In an embodiment, the method for work of projection arrangement also includes：Receive voice data, and broadcasting and audio
Audio corresponding to data.According to received voice data, audio corresponding to broadcasting, audio frequency apparatus can be audio amplifier, earphone
Deng audio frequency apparatus, after voice data is received, acoustical signal is converted it into, plays audio corresponding with voice data.Wherein,
Audio frequency apparatus can be built-in with that inside projection arrangement, can also be connected work with projection arrangement by outside.
In another embodiment, the method for work of projection arrangement also includes：By audio transmission to the network platform.With
Family can transmit voice data caused by piano keyboard image to the network platform after one section of music is played, for
Other people appreciate, and this improves the interest of projection arrangement, and by the network platform, can strengthen the popularity of projection arrangement.
Fig. 8 is refer to, is the step flow chart of the method for work of the projection arrangement of the embodiment of the utility model one.
On the basis of above-mentioned embodiment, step S702 further comprises：
Step S801：Fingerboard image and key position information are obtained using infrared ray.Specifically, in projection piano key
After disk, by collecting the infra-red radiation of scenery transmitting, and infra-red radiation is converted into corresponding electric signal, so as to obtain piano
The image information of the button such as the key having in keyboard and other function buttons, and position key in image or button
Position range, when being operated for user to fingerboard, system can accurately obtain the key or work(that user is contacted
Can property key information.
Step S802：Utilize infrared ray tracking user and the contact position of fingerboard image.Specifically, infrared ray shrouds
Whole fingerboard image, when user's finger contacts with fingerboard, finger can shelter from infrared ray, so as to form hot spot,
By obtaining the position of hot spot, so as to determine the contact point of finger and fingerboard, by contact point and key position information
Matched, so as to draw positional information that user is contacted.
In another embodiment, the method for work of projection arrangement also includes：According to the operation of user, scene is selected
Pattern.Specifically, when user needs to make played music that different results of broadcast be presented, then different scene moulds can be selected
Formula, such as rock and roll wind, electric sound wind, wind etc. of missing old times or old friends.According to the operation of user, a certain contextual model is selected, it is next for carrying out
Step response.
In another embodiment, step S704 (refer to Fig. 7) further comprises：Feelings according to selected by user
Scape pattern, is adjusted to voice data.Contextual model according to selected by user, is adjusted to voice data, works as user
A certain contextual model is selected, then after voice data is generated, the voice data is processed, broadcasts voice data driving
The result of broadcast that the audio put can be presented, corresponding with the contextual model selected by user, this adds user and uses projection
Interest during device.
Fig. 9 is refer to, is the step flow chart of the method for work of the projection arrangement of the embodiment of the utility model one.
In an embodiment, the method for work of projection arrangement includes：
Step S901：Projection generation fingerboard image.
Step S902：Store the piano music score of Chinese operas and piano playing method corresponding with the piano music score of Chinese operas.Specifically, user can be with
By modes such as networking or local data transfers, the piano music score of Chinese operas and piano playing method corresponding with the piano music score of Chinese operas are stored,
So that user is when needing the music score of Chinese operas to play or play the music score of Chinese operas, there is provided the piano music score of Chinese operas, and the side of playing corresponding to the piano music score of Chinese operas
Method, playing method are how user presses key, so as to complete the playing method of the piano music score of Chinese operas, i.e., note and steel in the music score of Chinese operas
The matched data of corresponding key in piano key board image.
Step S903：The piano music score of Chinese operas selected according to user, prompted on fingerboard image in the music score of Chinese operas corresponding to note
Key position.The piano music score of Chinese operas selected according to user, key position corresponding with note is prompted on fingerboard.Specifically
, when user needs study to play a certain music score of Chinese operas, the music score of Chinese operas can be recalled according to the selection operation of user, and according to the music score of Chinese operas
Playing mode, make corresponding key shinny, to prompt user how this presses key to play the music score of Chinese operas, wherein, key is shinny
Rhythm can be controlled by user, after user presses the key of prompting, next key can just light, or by projection arrangement handle
Control.In other embodiments, can also by other method of operation teacher users how the piano music score of Chinese operas.
Step S904：User and the contact position of fingerboard image are followed the trail of, contact position is generated into data message.User
It can be prompted according to key, press corresponding key, the key position that positioning user is pressed.
Step S905：Data message is handled, generates voice data.
Step S906：Transmit voice data.
In a specific embodiment of the present utility model, fingerboard is projected in a smooth flat by projection arrangement first
On, projection arrangement obtains the image and positional information of fingerboard, when user carries out pressing behaviour to the key in fingerboard
When making, infrared ray contacts generated hot spot with fingerboard image by user, positions the key position that user is pressed, with
Corresponding key in fingerboard matches, so as to parse the voice data corresponding to the key that user pressed, by audio
Data are transmitted to audio frequency apparatus by data-interface.
The method of work of projection arrangement of the present utility model, fingerboard is projected in smooth flat, and follows the trail of user and exist
The operating position of fingerboard, corresponding with the function of fingerboard according to the operating position of user, generation and user's operative position
Corresponding voice data, and voice data corresponding to transmission are put, makes user as using real piano.So take up space
Small, cost is low, and effect, form and true piano to user more closely, bring more interests.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
Art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (9)
- A kind of 1. projection arrangement for generating simulation piano, it is characterised in that including：Projection module, fingerboard image is generated for projecting, and follows the trail of the contact position of user and the fingerboard image, The contact position is generated into data message；Message processing module, it is connected with the projection module, for handling the data message, generates voice data, The voice data is used to drive audio frequency apparatus sounding；Sound signal transmission facilities, it is connected with described information processing module, for transmitting voice data.
- 2. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that also include：Audio frequency apparatus, with The sound signal transmission facilities connection, for receiving voice data, and plays audio corresponding with the voice data.
- 3. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that the projection module includes： Projecting apparatus, for projecting generation fingerboard image in smooth flat；Infrared image acquisition device, it is connected, uses with the projecting apparatus In the acquisition fingerboard image and key position information；Infrared laser locator, it is connected with the infrared image acquisition device, For following the trail of the contact position of the user and the fingerboard image, the contact position is generated into data message.
- 4. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that also include：Model selection mould Block, it is connected with described information processing module, for the operation according to user, selects contextual model.
- 5. the projection arrangement of generation simulation piano according to claim 4, it is characterised in that described information processing module bag Include：Processing unit, it is connected with the mode selection module, for the contextual model according to selected by user, voice data is entered Row adjustment.
- 6. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that also include：Data transfer mould Block, it is connected with described information processing module, for voice data to be transmitted to the network platform.
- 7. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that also include：Teacher's module, with The projection module connection, for the piano music score of Chinese operas selected according to user, prompts note institute in the music score of Chinese operas on fingerboard image Corresponding key position.
- 8. the projection arrangement of generation simulation piano according to claim 7, it is characterised in that also include：Memory module, with The projection module connection, for storing the piano music score of Chinese operas and piano playing method corresponding with the piano music score of Chinese operas.
- 9. the projection arrangement of generation simulation piano according to claim 1, it is characterised in that also include：Housing, the throwing Shadow module is built in the housing, and the housing has a through hole, and the projection module is by the through hole to housing outer projection steel Piano key board image.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720647228.9U CN207115006U (en) | 2017-06-06 | 2017-06-06 | The projection arrangement of generation simulation piano |
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| CN201720647228.9U CN207115006U (en) | 2017-06-06 | 2017-06-06 | The projection arrangement of generation simulation piano |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167990A (en) * | 2017-06-06 | 2017-09-15 | 深圳市泰衡诺科技有限公司 | The projection arrangement of generation simulation piano and the method for work of projection arrangement |
| CN109584847A (en) * | 2019-01-25 | 2019-04-05 | 张洋 | Building blocks electronic organ |
| CN109756628A (en) * | 2018-12-29 | 2019-05-14 | 北京金山安全软件有限公司 | Method and device for playing function key sound effect and electronic equipment |
| CN109584847B (en) * | 2019-01-25 | 2024-05-31 | 张洋 | Building block electronic organ |
-
2017
- 2017-06-06 CN CN201720647228.9U patent/CN207115006U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167990A (en) * | 2017-06-06 | 2017-09-15 | 深圳市泰衡诺科技有限公司 | The projection arrangement of generation simulation piano and the method for work of projection arrangement |
| CN109756628A (en) * | 2018-12-29 | 2019-05-14 | 北京金山安全软件有限公司 | Method and device for playing function key sound effect and electronic equipment |
| CN109584847A (en) * | 2019-01-25 | 2019-04-05 | 张洋 | Building blocks electronic organ |
| CN109584847B (en) * | 2019-01-25 | 2024-05-31 | 张洋 | Building block electronic organ |
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