Portable electronic audio devices and systems

Abstract

The present invention discloses a portable electronic audio device and system. The portable electronic audio device includes: a housing, a storage space is formed therein, and a plurality of through holes are arranged on the bottom surface of the housing; a printed circuit board is arranged in the storage space; an audio controller is installed on the printed circuit board; a plurality of contact terminals are arranged on the circuit board, and the contact terminals pass through corresponding through holes so that the ends of the contact terminals are exposed outside the housing; and a battery and a power management circuit are arranged in the storage space, and the power management circuit is used to manage the charging and discharging of the battery, and the battery supplies power to the audio controller on the printed circuit board through the power management circuit. In this way, people can play on paper, which increases the fun of playing.

Description

[Technical field]

[0001] The invention relates to the field of electronic equipment, and in particular to a portable electronic audio device and system capable of playing on paper. [Background technology]

[0002] Traditional musical instruments are very common in our daily life. The sound-producing bodies of traditional musical instruments are basically strings, membranes, springs, plates or metal bodies. For example, pianos, violins, erhu and other instruments all make sounds by string vibration, drums make sounds by membrane vibration, and gongs make sounds by metal body vibration. Later, electronic musical instruments gradually became popular. Electronic musical instruments have gone through the development stages of being composed of several different materials, including electron tubes, semiconductors and integrated circuits. Currently, most common electronic musical instruments use integrated circuits. There are many types of electronic musical instruments, and the most commonly used are electronic keyboards and various synthesizers with MIDI (Musical Instrument Digital Interface) functions.

[0003] There are many kinds of electronic organs (Electronic Organ abbreviated as EO), the most common one is the electronic organ, also known as the upright electronic organ. It has two or three rows of upper keyboards (for playing melodies or chords), a row of pedals (for playing notes), and is equipped with a power amplifier system and a speaker to produce sufficient volume. It is mainly used for stage solos, accompaniment, or for recording studios, film and television programs. The electric piano (Electronic Piano abbreviated as EP) is a new type of electronic piano that has appeared in recent years. Due to its focus on improving the touch strength of the traditional piano, as well as its pure tone and easy portability, it is replacing the traditional piano and appearing in modern music life. The electronic sound synthesizer (Synthesizer abbreviated as SY), referred to as a synthesizer, is a new generation of electronic musical instruments born in the mid-1960s. Its main function is to produce hundreds of timbres, dozens of rhythm patterns and sound effect electrical signals.

[0004] Recently, due to the development of smart phones, there are applications that can be installed on smart phones to imitate musical instruments. Such musical instrument applications can realize some functions of musical instruments with the help of the screen or other parts of the smart phone. However, the above electronic musical instruments are not interesting enough and have a single form, which cannot stimulate people's interest in music, especially children.

[0005] Therefore, it is necessary to provide a new electronic audio device to solve the above problems. [Summary of the invention]

[0006] One of the purposes of the present invention is to provide a new portable electronic audio device and system which is highly interesting and can be played on paper.

[0007] To achieve the purpose of the present invention, according to one aspect of the present invention, the present invention provides a portable electronic audio device, which includes: a shell having a storage space formed therein and a plurality of through holes arranged on a bottom surface thereof; a printed circuit board arranged in the storage space; an audio controller mounted on the printed circuit board; a plurality of contact terminals arranged on the circuit board, the contact terminals passing through corresponding through holes so that the ends of the contact terminals are exposed outside the shell; and a battery and a power management circuit arranged in the storage space, the power management circuit being used to manage the charging and discharging of the battery, and the battery supplies power to the audio controller on the printed circuit board through the power management circuit.

[0008] Furthermore, the power management circuit turns on the charging mode when it detects that the voltage of the predetermined contact terminal is higher than a predetermined value, and uses the predetermined contact terminal to charge the battery. The power management circuit turns off the charging mode when it detects that the voltage of the predetermined contact terminal is lower than a predetermined value, and the predetermined contact terminal is used normally.

[0009] Furthermore, the portable electronic audio device also includes: a USB interface arranged on the shell, and the battery is charged through the power management circuit based on the USB interface.

[0010] Furthermore, the portable electronic audio device also includes: a wireless communication interface located in the accommodating space, the communication interface communicates with the intelligent electronic terminal wirelessly, the intelligent electronic terminal runs an application for managing the portable electronic audio device, and the timbre mode of the portable electronic audio device can be set through the application.

[0011] Furthermore, the timbre modes of the portable electronic audio device include one or more of drums, piano, violin, cello, accordion, guitar, guzheng, and pipa, and different key contact terminals correspond to different audio signals.

[0012] Furthermore, the end of the contact terminal will elastically retract after being subjected to force, and the contact terminal will return to its original shape due to elastic restoring force after the force is removed.

[0013] Furthermore, the contact terminal includes: a fixed contact portion having a cavity, an elastic component arranged in the cavity and an elastic contact portion partially accommodated in the cavity, the elastic contact portion is connected to the elastic component, and the elastic contact portion will elastically retract into the cavity after being subjected to force. At this time, the elastic component will undergo elastic deformation due to the movement of the elastic contact portion, and the elastic component will return to its original state after the force is removed, thereby driving the elastic contact portion to return to its original position.

[0014] Furthermore, the contact terminal also includes an end cap portion, which has a concave cavity and a contact surface, the elastic contact portion abuts against the middle of the concave cavity, and the contact surface of the end cap portion is exposed outside the shell as the end of the contact terminal, the fixed contact portion, the elastic contact portion and the end cap portion are all made of conductive material, and the fixed contact portion is mounted on the bottom surface of the printed circuit board and is electrically connected to the printed circuit board.

[0015] Furthermore, the contact terminal includes a plurality of mode contact terminals and a plurality of key contact terminals, the audio controller determines the timbre mode of the portable electronic audio device based on the electrical signal of the mode contact terminal, the audio controller generates an audio signal corresponding to the triggered key contact terminal based on the electrical signal of the triggered key contact terminal, the portable electronic audio device can be in close contact with a playing page with the aid of a ferromagnetic metal sheet, the playing page is coated with a plurality of conductive playing keys and a plurality of mode contacts, the portable electronic audio device and the ferromagnetic metal sheet clamp the playing page therebetween through the magnetic adsorption force of the magnetic adsorption component, at which time the key contact terminals are respectively in electrical contact with the corresponding conductive playing keys, the mode contact terminals are respectively in electrical contact with the corresponding mode contacts, the user triggers the corresponding key contact terminal by triggering the conductive playing keys, and the conductive playing keys and mode contacts are printed or drawn on the playing page by conductive ink.

[0016] Furthermore, the portable electronic audio device also includes: an audio playback unit, which is used to play the audio signal output by the audio controller, and the audio playback unit is located inside the shell, or outside the shell and communicates with the audio controller via wired or wireless means.

[0017] According to another aspect of the present invention, there is provided a portable electronic audio system, comprising: the portable electronic audio device as described above; and a playing book, comprising one or more playing pages, the playing pages being coated with a plurality of conductive playing keys and a plurality of mode contacts, the portable electronic audio device and a ferromagnetic metal sheet clamping the playing pages therebetween through the magnetic adsorption force of a magnetic adsorption component, at which time the key contact terminals are respectively electrically contacted with the corresponding conductive playing keys, and the mode contact terminals are respectively electrically contacted with the corresponding mode contacts, and a user triggers the corresponding key contact terminals by triggering the conductive playing keys, and the conductive playing keys and mode contacts are printed or drawn on the playing pages by conductive ink.

[0018] Compared with the prior art, the present invention provides a brand-new portable electronic audio device and system that can be played on paper, which allows people to play on paper and increases the fun of playing.

Brief Description of the Drawings

[0019] The present invention will be more easily understood with reference to the accompanying drawings and the following detailed description, wherein like reference numerals correspond to like structural components, wherein:

[0020] Figure 1 is a three-dimensional schematic diagram of a portable electronic audio system in a first embodiment of the present invention, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are placed separately;

[0021] Figure 2 for Figure 1 A schematic perspective diagram of a portable electronic audio device in an upward-looking perspective;

[0022] Figure 3 for Figure 1 A three-dimensional schematic diagram of the portable electronic audio system in use, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are combined and placed together;

[0023] Figure 4 for Figure 1 A schematic diagram of a circuit principle of a portable electronic audio device;

[0024] Figure 5 for Figure 1 An exploded perspective schematic diagram of a portable electronic audio device from one perspective;

[0025] Figure 6 for Figure 1 A perspective exploded schematic diagram of another perspective of the portable electronic audio device;

[0026] Figure 7 for Figure 6 A three-dimensional enlarged schematic diagram of the contact terminal in FIG. 1 , wherein the elastic contact portion is located at an initial position;

[0027] Figure 8 for Figure 6 A three-dimensional enlarged schematic diagram of a contact terminal in which the elastic contact portion is retracted into the guide groove of the fixed contact portion due to external force;

[0028] Fig. 9 for Figure 1 A diagram of the second playing page of the playing book in the;

[0029] Fig.10 for Figure 1 A diagram of the third playing page of the playing book in the book;

[0030] Fig.11 for Figure 1 A diagram of the fourth playing page of the playing book in the book;

[0031] Fig.12is a three-dimensional schematic diagram of a portable electronic audio system in a second embodiment of the present invention, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are placed separately;

[0032] Fig.13 for Fig.12 A three-dimensional schematic diagram of the portable electronic audio system in use, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are combined and placed together;

[0033] Fig.14 for Fig.12 An enlarged view of circle A in FIG.

[0034] Fig.15 A schematic diagram of charging the portable electronic audio device of the present invention;

[0035] Fig.16 is a three-dimensional schematic diagram of a portable electronic audio system in a third embodiment of the present invention, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are placed separately;

[0036] Fig.17 for Fig.16 A three-dimensional schematic diagram of the portable electronic audio system in use, wherein the portable electronic audio device, the playing book and the ferromagnetic metal sheet are combined and placed together;

[0037] Fig.18 Fig.16 Schematic diagram of the circuit principle of the portable electronic audio device. [Specific implementation method]

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] As used herein, "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments. Unless otherwise specified, the words "connected", "connected", and "connected" herein that indicate electrical connection all refer to direct or indirect electrical connection.

[0040] System Introduction

[0041] The present invention provides a brand-new portable electronic audio system that can be played on paper, which can support users to play on paper and increase the fun of playing. In particular, it can be used for the early development and education of children's musical interest and stimulate children's interest in music.

[0042] Figure 1 is a stereoscopic schematic diagram of the portable electronic audio system 100 of the present invention in the first embodiment, Figure 3 for Figure 1 Schematic diagram of a portable electronic audio system 100 in use. Figure 1 and 3 As shown, the portable electronic audio system 100 includes a portable electronic audio device 110 , a playing book 120 and a ferromagnetic metal sheet 130 .

[0043] Figure 2 for Figure 1 FIG. 1 is a perspective diagram of a portable electronic audio device 110 viewed from above, Figure 5 for Figure 1 A perspective exploded schematic diagram of a portable electronic audio device 100 from one perspective; Figure 6 for Figure 1 FIG. 1 is a perspective exploded schematic diagram of the portable electronic audio device 110 from another perspective.

[0044] like Figure 2 , 5 As shown in , the portable electronic audio device 110 includes a housing 111 with a storage space, a printed circuit board 113 disposed in the storage space, a plurality of contact terminals 112 disposed on the circuit board 113, a magnetic adsorption component 114 disposed in the storage space, and an audio controller 115 mounted on the printed circuit board 113. A plurality of through holes 116 are disposed on the bottom surface of the housing 111. The contact terminals 112 pass through the corresponding through holes 116 so that the ends of the contact terminals 112 are exposed outside the housing 111. The audio controller 115 is electrically connected to the contact terminals 112 through the printed circuit board 113.

[0045] In this embodiment, the contact terminal 121 includes a plurality of key contact terminals 1121 and a ground contact terminal 1122. When the user touches the ground contact terminal 1122 and the key contact terminal 1121 at the same time, the key contact terminal 1121 is triggered. When the key contact terminal 1121 is triggered, the audio controller 115 generates an audio signal corresponding to the triggered key contact terminal 1121. The audio controller 115 determines whether the key contact terminal 1121 is triggered by detecting the electrical signal on the key contact terminal 1121.

[0046] In this embodiment, the shell 111 is in the shape of an elongated strip, and the magnetic adsorption component 114 may be a magnet, and the number of the magnetic adsorption component 114 may be 2. The magnetic adsorption component 114 is disposed at both ends of the shell 111, and may of course be disposed at other positions. The shell 111 includes a magnet mounting portion 1114 formed at both ends thereof, and the magnetic adsorption component 114 is fixed on the magnet mounting portion 1114. The shell 111 includes an upper shell portion 1111 and a lower shell portion 1112, and the lower shell portion 1111 and the lower shell portion 1112 are fixedly connected together by a connecting component 1113. The contact terminals 112 may be arranged in a row or in multiple rows. In other embodiments, the shape of the shell 111 may also be set to other shapes, such as square, circular, etc., and the number of the magnetic adsorption components 114 may be 1, 3 or more.

[0047] The playing book 120 includes one or more playing pages, each of which can be a piece of paper. A plurality of conductive playing keys 121 and a common key 122 are coated on the playing page. In the present embodiment, eight conductive playing keys 121 are shown, and in other embodiments, there may be more or fewer conductive playing keys 121. The conductive playing keys 121 and the common keys 122 are printed or drawn on the playing pages with conductive ink, and these keys are conductive. The conductive ink can be various conductive inks that can be used in the prior art, and there is no particular limitation on this in this article.

[0048] The ferromagnetic metal sheet 130 is made of a material that can be magnetically attracted by a magnet, such as iron. In a specific application, the ferromagnetic metal sheet 130 can be a whiteboard or a blackboard that can be written on, a table, a separate metal sheet, a metal strip, etc. In some embodiments, the ferromagnetic metal sheet 130 may not be included in the portable electronic audio system 100. The portable electronic audio device 110 can be in close contact with a playing page with the help of the ferromagnetic metal sheet 130.

[0049] Spring contact terminal

[0050] In order to enable the contact terminal 112 to have a more stable electrical contact with the conductive playing key 121 and the common key 122 on the playing page, the contact terminal 112 is designed so that the end of the contact terminal 112 will elastically retract when subjected to force, and the contact terminal 112 will return to its original shape due to the elastic restoring force after the force is removed.

[0051] Figure 7 for Figure 6 A three-dimensional enlarged schematic diagram of the contact terminal 112, wherein the elastic contact portion is located at an initial position; Figure 8 for Figure 6FIG. 1 is a perspective enlarged schematic diagram of the contact terminal 112 in which the elastic contact portion is retracted into the guide groove of the fixed contact portion due to external force. Figure 7 and 8 As shown, the contact terminal 112 includes: a fixed contact portion 1125 with a guide groove, an elastic component (not shown) disposed in the guide groove, and an elastic contact portion 1126 partially received in the guide groove, the elastic contact portion 1126 is connected to the elastic component (not shown), and the elastic contact portion 1126 will elastically retract into the guide groove after being subjected to force, at this time, the elastic component will undergo elastic deformation due to the movement of the elastic contact portion, and after the force is removed, the elastic component will return to its original state and drive the elastic contact portion to return to its original position. The contact terminal 112 also includes an end cap portion 1127, the end cap portion 1127 has a concave cavity and a contact surface, the end of the elastic contact portion 1126 abuts against the middle of the concave cavity, and the contact surface of the end cap portion 1127 is exposed outside the housing 111 as the end of the contact terminal 112, and the fixed contact portion 1125, the elastic contact portion 1126 and the end cap portion 1127 are all made of conductive materials. The fixed contact portion 1125 is mounted on the bottom surface of the printed circuit board 113 and is electrically connected to the printed circuit board 113. The end cap portion 1127 can make the contact area of ​​the contact terminal 112 larger and the contact more stable. In a modified embodiment, the contact terminal 112 may not include the end cap portion 1127, and the end of the elastic contact portion 1126 may be directly used as the contact surface of the contact terminal 112.

[0052] Introduction to the principle of electronic sound generation

[0053] Figure 3 for Figure 1 Schematic diagram of a portable electronic audio system 100 in use, wherein a portable electronic audio device 110, a playing book 120 and a ferromagnetic metal sheet 130 are combined and placed together. Figure 3As shown, the portable electronic audio device 110 and the ferromagnetic metal sheet 130 clamp the playing page between them through the magnetic adsorption force of the magnetic adsorption component 114, at which time the key contact terminals 1121 are respectively in electrical contact with the corresponding conductive playing keys 121, and the ground contact terminals 1122 are in electrical contact with the common keys 122. When playing, the user touches the common keys 122 with the fingers of one hand, and the user touches the conductive playing keys 121 with the fingers of the other hand. At this time, the conductive playing keys 121 are triggered, which in turn causes the corresponding key contact terminals 1121 to be triggered, and the audio controller 115 generates an audio signal corresponding to the triggered conductive playing keys 121. The user can also touch the conductive playing keys 121 and the common keys 122 with other parts of the human body, such as the face, nose, etc., or multiple people can touch each other hand in hand, as long as the human body can be connected between the conductive playing keys 121 and the common keys 122. In one embodiment, the eight conductive playing keys 121 can correspond to audio signals such as DO, RE, MI, FA, SOL, LA, SI and DO-sharp, so that a beautiful piece of music can be played by playing these conductive playing keys 121. In another embodiment, the audio signal corresponding to the conductive playing key 121 can be a recording, such as a voice or a piece of music, so that when the conductive playing key 121 is played, the corresponding audio signal can be played.

[0054] The sound generation principle of the portable electronic audio device 110 is described below. Figure 4 for Figure 1 Schematic diagram of the circuit principle of the portable electronic audio device 100.

[0055] The audio controller 115 of the portable electronic audio device 110 includes a plurality of input pins, wherein the audio input pins are electrically connected to a plurality of key contact terminals 1121 through the printed circuit board 113, and the ground input pins are electrically connected to the ground contact terminal 1122 through the printed circuit board 113. Each audio input pin is connected to the power supply terminal VCC through a resistor R1, R2 or R3.

[0056] When the user does not electrically connect the ground contact terminal 1122 and the key contact terminal 1121 through the body, the key contact terminal 1121 will be pulled up to a high level due to the corresponding pull-up resistors R1, R2 and R3, etc., and the analog-to-digital converter 1151 detects the level signal of the key contact terminal 1121, and performs analog-to-digital conversion on the detected level signal, and then performs filtering by the filter 1152 to avoid noise interference, and then the data is handed over to the trigger determination module 1153 for trigger determination. When it is detected that the level signal of the key contact terminal 1121 is a high level, it is determined that the key contact terminal 1121 is not triggered. When the user electrically connects the ground contact terminal 1122 and a key contact terminal 1121 through the body (such as two fingers), since the human body itself is a large resistor, the pull-up resistors R1, R2 and R3 and the equivalent resistance of the human body form a voltage divider network, which will cause the voltage of the corresponding key contact terminal 1121 to be much lower. When the audio controller 115 detects that the level signal of the key contact terminal 1121 is lower than a predetermined threshold, it is considered that the key contact terminal 1121 is electrically connected to the ground contact terminal 1122 by the human body, that is, the key contact terminal 1121 is triggered. When multiple key contact terminals 1121 are triggered at the same time, the audio controller 150 can also make a judgment at the same time. The audio controller 150 includes a memory, and the memory stores a corresponding audio signal for each key contact terminal 1121. After a key contact terminal 1121 is triggered, the audio controller 150 will generate a corresponding audio signal.

[0057] like Figure 4 As shown, the portable electronic audio device 110 also includes an audio output interface, which can be an audio jack, which can be connected to an audio playback unit (such as a speaker) through an audio line, so that the audio playback unit can play the audio signal output by the audio controller. The audio playback unit can be placed inside the housing 111 or outside the housing 111. Figure 4 As shown, the portable electronic audio device 110 also includes a communication interface, which can be a WiFi communication module, a Bluetooth communication module, or other wired communication modules, such as a USB module, etc. The communication interface can communicate with an external device (smart mobile terminal), and the audio signal output by the audio controller 115 can be transmitted to an external speaker or smart mobile terminal through the communication interface for playback.

[0058] Introduction to multi-tone function and power saving mode

[0059] In order to increase the fun, entertainment and versatility, the contact terminal 112 also includes a plurality of mode contact terminals 1123, the performance page is also coated with a plurality of mode contacts 123, and the audio controller 150 also includes a plurality of mode input pins, and the plurality of mode input pins are electrically connected to the plurality of mode contact terminals 1123 through the printed circuit board 113. When in use, the portable electronic audio device 110 is placed on the performance page, and the mode contact terminal 1123 is in electrical contact with the mode contact 123 of the performance page.

[0060] The audio controller 150 determines the current timbre mode of the portable electronic audio device 110 by detecting the electrical signal of the mode contact terminal 1123. In one example, the timbre mode of the portable electronic audio device 110 may include one or more of drums, piano, violin, cello, accordion, guitar, guzheng, and pipa. For example, when the timbre mode of the portable electronic audio device 110 is drum, after the conductive playing key 121 and the common key 122 are electrically connected by the human body, an audio signal corresponding to the conductive playing key 121 is generated, but the timbre is a drum sound, that is, the portable electronic audio device 110 is used as an electronic drum. In another example, when the timbre mode of the portable electronic audio device 110 is piano, playing the conductive playing key 121 can produce the sound of a piano.

[0061] In one embodiment, Figure 4 As shown, the electrical signal of the mode contact terminal 1123 is usually at a high level. When the electrical signals of all mode contact terminals 1123 are at a high level, it is considered that the portable electronic audio device 110 is in the first timbre mode. Figure 1 There are two mode contacts 123 in the playing page. When the portable electronic audio device 110 is used with this playing page, the portable electronic audio device 110 is in the first timbre mode.

[0062] like Fig. 9 As shown, a mode contact on the playing page is electrically connected to the common key 122, so that when used with the portable electronic audio device 110, the electrical signal of the mode contact terminal 1123 corresponding to the mode contact will change to a low level, and the portable electronic audio device 110 is in the second timbre mode. Fig.10As shown, another mode contact on the playing page is electrically connected to the common key 122, so that when used with the portable electronic audio device 110, the electrical signal of the mode contact terminal 1123 corresponding to the mode contact will change to a low level, and the portable electronic audio device 110 is in the third timbre mode. In addition, a fourth timbre mode can also be set, that is, both mode contacts are electrically connected to the common key 122. It can be seen that the number of timbre modes supported by the portable electronic audio device 110 is related to the number of mode contact terminals 1123.

[0063] In a preferred embodiment, the audio controller 150 can determine whether the portable electronic audio device 110 needs to enter the power saving mode based on the electrical signal of the mode contact terminal 1123. For example, Fig. 9 In the timbre mode shown, when in use, one of the mode contact terminals 1123 should be at a low level, and the other mode contact terminal 1123 should be at a high level, and when the portable electronic audio device 110 is taken away from the playing page, both mode contact terminals 1123 will become high levels. Since the portable electronic audio device 110 is taken away from the playing page at this time, the portable electronic audio device 110 can automatically enter the power saving mode, thereby saving power.

[0064] In another embodiment, a separate working detection switch is provided in the portable electronic audio device 110, and when the portable electronic audio device 110 is used in conjunction with the playing book, the working detection switch outputs a working signal, and when the portable electronic audio device 110 is not used in conjunction with the playing book, the working detection switch outputs a sleep signal, and the portable electronic audio device 110 enters a power saving mode based on the sleep signal. The working detection switch may be a button switch. When the portable electronic audio device 110 is used in conjunction with the playing book, the button switch is turned on due to the magnetic adsorption force of the magnetic adsorption component 114 and the abutment of the playing page. When the portable electronic audio device 110 is not used in conjunction with the playing book, the button switch is disconnected due to the elastic restoring force.

[0065] In one embodiment, the mode contact terminal 1123 may not be provided, and the performance page may not have the mode contact 123. In this case, other methods may also be used to implement multiple timbre modes. For example, in one embodiment, the portable electronic audio device 110 may communicate with an intelligent electronic terminal (not shown) in a wireless manner through a communication interface. The intelligent electronic terminal runs an application for managing the portable electronic audio device 110. The timbre mode of the portable electronic audio device 110 can be set through the application. In this case, the intelligent electronic terminal can directly play audio based on the signal from the portable electronic audio device 110. The signal from the portable electronic audio device 110 may not be an audio signal, but may be a coded signal. The intelligent electronic terminal plays audio according to the coded signal and the determined timbre mode.

[0066] Introduction to the Playing Book

[0067] Please see Figure 1 , Fig. 9 , Fig.11 The conductive playing keys 121 on the playing page can be printed into various shapes, such as Figure 1 For example, Fig. 9 There are several cartoon trees in the picture. Users can send out different audio signals by touching different small trees. Fig.11 In a preferred embodiment, only a part of the conductive playing key is drawn in advance in the playing page, and the rest can be drawn by the user himself using the conductive pen 210, which can draw the conductive playing key.

[0068] like Fig.10 As shown, a guide mark for a piece of music can be formed near the conductive playing key 121, and the corresponding piece of music can be played by playing on the conductive playing key 121 according to the guide mark. For example, the tones of the music "Twinkle Twinkle Little Star" can be set on the conductive playing key 121 in sequence in advance, such as Fig.10 The guide marks 1, 2, 3-6 in the conductive playing key 121 can be pasted by the user himself near the conductive playing key 121, or printed near the conductive playing key 121.

[0069] Power supply related introduction

[0070] like Figure 4As shown, the portable electronic audio device 110 further includes a battery 117 and a power management module 119 disposed in the accommodation space. The power management module 119 is responsible for charging and discharging the battery 117, converting the voltage, etc. The battery 117 supplies power to various electronic modules in the portable electronic audio device 110 through the power management module 119. Figure 6 As shown, the portable electronic audio device 110 further includes a USB interface 118 disposed on the housing 111 , and the battery 117 is charged through the power management module 119 based on the USB interface 118 .

[0071] In another embodiment, the USB interface 118 may not be provided, and the contact terminal 112 may be directly reused for charging. In this case, the power management circuit 119 turns on the charging mode when it detects that the voltage of the predetermined contact terminal 112 is higher than a predetermined value (for example, it may be higher than the value of the power supply voltage VCC), and uses the predetermined contact terminal to charge the battery 117. The power management circuit 119 turns off the charging mode when it detects that the voltage of the predetermined contact terminal is lower than a predetermined value, and the predetermined contact terminal is used normally. For example, two mode contact terminals 1123 may be used as charging interfaces.

[0072] Fig.15 FIG. 1 is a schematic diagram of charging the portable electronic audio device 110 of the present invention. Fig.15 , a charging stand 310 of a portable electronic audio device 110 is shown, and a USB interface 311 and a charging interface 312 formed in a concave cavity are provided on the charging stand 310. When charging, the portable electronic audio device 110 is placed in the concave cavity, at which time the predetermined contact terminal of the portable electronic audio device 110 is electrically connected to the charging interface 312, and the USB interface 311 charges the portable electronic audio device 110 via the charging interface 312. In this way, there is no need to provide an additional charging interface on the portable electronic audio device 110. In one embodiment, the housing 111 of the electronic audio device 110 is a waterproof and fully enclosed structure.

[0073] In one embodiment, the portable electronic audio device 110 may also have a recording mode. After the portable electronic audio device 110 enters the recording mode through the recording switch, the music played by the user using the portable electronic audio device 110 will be recorded in the portable electronic audio device 110 for the user to play again in the future.

[0074] Common key and conductive playing key combination

[0075] Fig.12FIG. 5 is a three-dimensional schematic diagram of a portable electronic audio system 500 in a second embodiment of the present invention. The portable electronic audio system 500 includes a portable electronic audio device 510, a playing book 520, and a ferromagnetic metal sheet 530. Fig.12 The portable electronic audio device 510, the playing book 520 and the ferromagnetic metal sheet 530 are placed separately. Fig.13 for Fig.12 FIG. 5 is a three-dimensional schematic diagram of a portable electronic audio system 500 in use, wherein a portable electronic audio device 510, a playing book 520 and a ferromagnetic metal sheet 530 are combined and placed together. Fig.14 for Fig.12 Magnified view of circle A in FIG.

[0076] Fig.12 The portable electronic audio system 500 of the present invention is shown with Figure 1 The difference of the portable electronic audio system 100 shown is that the common keys 522 and the conductive playing keys 521 in the playing book 520 are arranged differently from the common keys 522 and the conductive playing keys 521 in the playing book 120, and the rest are basically the same. In this second embodiment, the common keys 522 include a common ink bar 5221 and a plurality of branch ink bars 5222 branched from the common ink bar, and a branch ink bar 5222 is arranged at a predetermined distance from each conductive playing key 521, so that a finger of a user can simultaneously contact the adjacent conductive playing keys 521 and the branch ink bars 5222, thereby directly triggering the conductive playing keys 521. In addition, insulating ink 524 is coated between the adjacent conductive playing keys 521 and the branch ink bars 5222 to improve the insulation between the two. In appearance, the branch ink strip 5222, the insulating ink 524 and the conductive playing key 521 may be a whole strip of ink, but in fact they are divided into three parts. Since the overall width is not very wide, a user's finger touches both the branch ink strip 5222 and the conductive playing key 521, thereby realizing that the conductive playing key 521 can be triggered by one finger. In this embodiment, the user only needs one finger to play and trigger the conductive playing key 521, thereby producing pleasant music, without the need for another finger to touch the common key at the same time, which is convenient for application.

[0077] Capacitive portable electronic audio system

[0078] Fig.16 FIG. 6 is a three-dimensional schematic diagram of a portable electronic audio system 600 in the third embodiment of the present invention. Fig.16 As shown, the portable electronic audio system 600 includes a portable electronic audio device 610 , a playing book 620 , and a ferromagnetic metal sheet 630 . Fig.17 for Fig.16FIG. 6 is a three-dimensional schematic diagram of a portable electronic audio system 600 in use, wherein a portable electronic audio device 610, a playing book 620 and a ferromagnetic metal sheet 630 are combined and placed together. Fig.18 Fig.16 Schematic diagram of the circuit principle of the portable electronic audio device 610.

[0079] Fig.16 The portable electronic audio system 600 of the present invention is shown with Figure 1 The difference between the portable electronic audio system 100 shown is that the portable electronic audio system 100 uses a resistance method to sense the triggering of the conductive playing key, which requires the common key and the conductive playing key to be used in conjunction, while the portable electronic audio system 600 uses a capacitance method to sense the triggering of the conductive playing key, which does not require the common key to be used in conjunction, and can detect the triggering by only setting the conductive playing key 621. In this third embodiment, the portable electronic audio system 600 can also include a mode contact terminal, the playing book 620 can also include a mode contact point 623, and the timbre mode of the portable electronic audio device 610 can also be determined by detecting the electrical signal (high level and low level) of the mode contact terminal.

[0080] like Fig.18 As shown, the audio controller 615 of the portable electronic audio device 610 includes a plurality of input pins, wherein the audio input pins are electrically connected to a plurality of key contact terminals 6121 through a printed circuit board. Each audio input pin is connected to a power supply terminal VCC through a resistor R1, R2 or R3, etc., and is also grounded through a capacitor C1, C2 or C3, etc. The capacitor C1, C2 or C3 can be a parasitic capacitor or an independent capacitor. Only three key contact terminals 6121 are shown in the figure, and the remaining key contact terminals 6121 are omitted. In addition, the mode contact terminal is also omitted.

[0081] When the user does not electrically contact the key contact terminal 6121 through the body, the capacitance value of the capacitor C1, C2 or C3 is the first value, and the trigger detection circuit in the audio controller 615 continuously charges and discharges each capacitor C1, C2 or C3, and the duration of each charge is a predetermined time value. When the user electrically contacts the key contact terminal 6121 through the body, the capacitance value of the capacitor C1, C2 or C3 will change due to the contact of the human body, which will cause the charging duration of the capacitor corresponding to the contacted audio contact terminal 6121 to change. If the change value of the charging duration of a capacitor exceeds a predetermined threshold, it is considered that the key contact terminal 6121 corresponding to this capacitor is triggered or contacted by the human body. In this way, when the portable electronic audio device 610 is placed on the appropriate position of the playing book 620, the user only needs to play the conductive playing key 621, and does not need to contact another common key at the same time, so as to achieve the triggering of the conductive playing key 621, and the audio controller 615 can generate the audio signal corresponding to the triggered key contact terminal 6121.

[0082] For other contents in the third embodiment, reference may be made to the portable electronic audio system 100 in the first embodiment, and will not be repeated here.

[0083] The above description has fully disclosed the specific embodiments of the present invention. It should be pointed out that any changes made by a person skilled in the art to the specific embodiments of the present invention do not deviate from the scope of the claims of the present invention. Accordingly, the scope of the claims of the present invention is not limited to the specific embodiments.

Claims

1. A portable electronic audio device, characterized in that: It includes: A housing having a receiving space formed therein and a plurality of through holes arranged on a bottom surface thereof; A printed circuit board disposed in the accommodation space; an audio controller mounted on the printed circuit board; A plurality of contact terminals are disposed on the circuit board, wherein the contact terminals pass through corresponding through holes so that the ends of the contact terminals are exposed outside the housing; and A battery and a power management circuit are arranged in the accommodation space, wherein the power management circuit is used to manage the charging and discharging of the battery, and the battery supplies power to the audio controller on the printed circuit board through the power management circuit; The end of the contact terminal will elastically retract after being subjected to force, and the contact terminal will return to its original shape due to elastic restoring force after the force is removed; A fixed contact portion having a cavity, an elastic component disposed in the cavity and an elastic contact portion partially accommodated in the cavity, wherein the elastic contact portion is connected to the elastic component, and the elastic contact portion elastically retracts into the cavity after being subjected to force, and at this time, the elastic component undergoes elastic deformation due to the movement of the elastic contact portion, and after the force is removed, the elastic component returns to its original state, thereby driving the elastic contact portion to return to its original position; The contact terminal further comprises an end cap, the end cap having a concave cavity and a contact surface, the elastic contact portion abuts against the middle of the concave cavity, the contact surface of the end cap being exposed outside the housing as the end of the contact terminal, the fixed contact portion, the elastic contact portion and the end cap are all made of a conductive material, the fixed contact portion is mounted on the bottom surface of the printed circuit board and is electrically connected to the printed circuit board; The contact terminals include a plurality of mode contact terminals and a plurality of key contact terminals, the audio controller determines the timbre mode of the portable electronic audio device based on the electrical signals of the mode contact terminals, and the audio controller generates an audio signal corresponding to the triggered key contact terminal based on the electrical signals of the triggered key contact terminals. The portable electronic audio device can be in close contact with a playing page by means of a ferromagnetic metal sheet, and the playing page is coated with a plurality of conductive playing keys and a plurality of mode contacts. The portable electronic audio device and the ferromagnetic metal sheet clamp the playing page between them through the magnetic adsorption force of the magnetic adsorption component, and at this time, the key contact terminals are respectively in electrical contact with the corresponding conductive playing keys, and the mode contact terminals are respectively in electrical contact with the corresponding mode contacts. The user triggers the corresponding key contact terminals by triggering the conductive playing keys, and the conductive playing keys and mode contacts are printed or drawn on the playing page by conductive ink; The housing includes magnet mounting portions formed at both ends thereof, and the magnetic adsorption component is fixed on the magnet mounting portions; The audio controller of the portable electronic audio device includes a plurality of input pins, wherein the audio input pins are electrically connected to a plurality of key contact terminals through a printed circuit board, and the ground input pins are electrically connected to the ground contact terminals through a printed circuit board; each audio input pin is connected to a power supply terminal VCC through a resistor R1, R2 or R3; When the user electrically connects the ground contact terminal and the key contact terminal without using the body, the key contact terminal will be pulled up to a high level due to the corresponding pull-up resistors R1, R2 and R3, the analog-to-digital converter detects the level signal of the key contact terminal, and performs analog-to-digital conversion on the detected level signal, and then performs filtering to avoid noise interference, and then the data is handed over to the trigger judgment module for trigger judgment; when it is detected that the level signal of the key contact terminal is a high level, it is determined that the key contact terminal is not triggered; when the user electrically connects the ground contact terminal and a key contact terminal through the body, the pull-up resistors R1, R2 and R3 and the equivalent resistance of the human body form a voltage divider network, which will cause the voltage of the corresponding key contact terminal to decrease; when the audio controller detects that the level signal of the key contact terminal is lower than a predetermined threshold, it is considered that the key contact terminal is electrically connected to the ground contact terminal by the human body, and the key contact terminal is triggered; when multiple key contact terminals are triggered at the same time, the audio controller can also make judgments at the same time.

2. The portable electronic audio device according to claim 1, characterized in that The power management circuit turns on the charging mode when it detects that the voltage of the predetermined contact terminal is higher than a predetermined value, and uses the predetermined contact terminal to charge the battery. The power management circuit turns off the charging mode when it detects that the voltage of the predetermined contact terminal is lower than a predetermined value, and the predetermined contact terminal is used normally.

3. The portable electronic audio device according to claim 1, characterized in that It also includes: a USB interface arranged on the shell, and the battery is charged through the power management circuit based on the USB interface.

4. The portable electronic audio device according to claim 1, characterized in that It also includes: a wireless communication interface located in the accommodating space, the communication interface communicates with the intelligent electronic terminal in a wireless manner, the intelligent electronic terminal runs an application for managing the portable electronic audio device, and the timbre mode of the portable electronic audio device can be set through the application.

5. The portable electronic audio device according to claim 4, characterized in that: The timbre modes of the portable electronic audio device include one or more of drums, piano, violin, cello, accordion, guitar, guzheng, and pipa, and different key contact terminals correspond to different audio signals.

6. The portable electronic audio device according to claim 1, characterized in that It also includes: an audio playback unit, which is used to play the audio signal output by the audio controller. The audio playback unit is located inside the shell, or outside the shell and communicates with the audio controller via wired or wireless means.

7. A portable electronic audio system, characterized in that: It includes: A portable electronic audio device as claimed in any one of claims 1 to 6; and A playing book, comprising one or more playing pages, on which a plurality of conductive playing keys and a plurality of mode contacts are coated; a portable electronic audio device and a ferromagnetic metal sheet clamp the playing pages between them through the magnetic adsorption force of a magnetic adsorption component, at which time the key contact terminals are respectively in electrical contact with the corresponding conductive playing keys, and the mode contact terminals are respectively in electrical contact with the corresponding mode contacts, and a user triggers the corresponding key contact terminals by triggering the conductive playing keys, and the conductive playing keys and mode contacts are printed or drawn on the playing pages by conductive ink.

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