CN213339682U - Sound recording pen - Google Patents

Abstract

The application discloses recording pen, including main part module, directional microphone and omnidirectional microphone array, omnidirectional microphone array includes two at least omnidirectional microphones. The recording pen is provided with a directional microphone and an omnidirectional microphone array at the same time, and can pick up ambient sound in a near field and a far field. The application also provides a directional microphone and omnidirectional microphone array's overall arrangement mode, is about to directional microphone sets up in the top of main part module, make full use of the great space in main part module top and hold directional microphone, and the main part module top is natural can not shelter from directional microphone pickup direction. And each omnidirectional microphone in the omnidirectional microphone array is arranged on the front surface of the main body module, so that the omnidirectional microphones cannot be shielded in use, and the front surface with a larger surface area is more beneficial to layout of each omnidirectional microphone, so that different pickup trends of different omnidirectional microphones are ensured, and the processing of a subsequent noise reduction algorithm is supported.

Description

Sound recording pen

Technical Field

The application relates to the technical field of electronic products, in particular to a recording pen.

Background

With the development of artificial intelligence and voice recognition technology, more and more electronic products based on voice processing technology are popularized, and especially, recording pens are popular with users in working and living scenes.

At present, the conventional recording pen on the market is generally a cuboid planar device. The usage scenarios can be roughly divided into two types, one is near-field usage, such as news interview scenarios. The other is far-field use, such as lecture scenes and the like. The microphone assemblies can be divided into two types, one type is an omnidirectional microphone array, and the omnidirectional microphone array comprises a plurality of omnidirectional microphones, so that the omnidirectional microphone array has better omnidirectional performance and better noise reduction capability, and is suitable for near-field sound reception. The other type is a directional microphone which has good directional sound receiving effect, can receive sound at a long distance, has poor noise reduction capability and is suitable for far-field sound reception.

The conventional recording pen can only be adapted to one of the two scenes, that is, only a directional microphone or only an array microphone is provided, which causes the user to carry two different types of recording pens when the user uses the recording pen in different scenes, and the user needs to switch to use different recording pens, so that the use is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application is provided to provide a recording pen to solve the problem that the conventional recording pen cannot adapt to both near-field and far-field reception scenes. The specific scheme is as follows:

a stylus, comprising:

the system comprises a main body module, a directional microphone and an omnidirectional microphone array, wherein the omnidirectional microphone array comprises at least two omnidirectional microphones, and the directional microphone and the omnidirectional microphone array are used for picking up environmental sound;

the directional microphones are arranged on the top of the main body module, and each omnidirectional microphone in the omnidirectional microphone array is arranged on the front surface of the main body module.

Preferably, the directional microphone is disposed at one end of the top of the main body module, and each omnidirectional microphone in the omnidirectional microphone array is disposed at an interval on a vertical central axis of the front surface of the main body module.

Preferably, the directional microphones are disposed in the middle of the top of the main body module, and each of the omnidirectional microphones in the omnidirectional microphone array is disposed on two sides of the front surface of the main body module symmetrically with respect to the vertical central axis.

Preferably, the top and the bottom of the main body module are arc structures, the front and the back surfaces of the main body module are plane structures, and the plane structures are in smooth transition connection with the arc structures.

Preferably, the main body of the directional microphone is fused into the arc-shaped structure at the top of the main body module, and the sound receiving hole is formed in the part of the arc-shaped structure at the top, which wraps the main body of the directional microphone.

Preferably, the top of the directional microphone protrudes from the arc structure of the top.

Preferably, the method further comprises the following steps: a horn assembly;

the loudspeaker subassembly sets up in the arc structure at main part module top, and the arc structure based on the top forms loudspeaker subassembly's airtight sound chamber.

Preferably, the method further comprises the following steps: the touch screen is arranged on the front surface of the main body module and used for displaying information and providing an interactive control interface.

Preferably, the method further comprises the following steps: and at least part of the entity control keys are arranged on the front surface of the main body module and positioned below the touch screen, and are used for entering corresponding operation instructions under external trigger.

Preferably, the distance between the touch screen and the at least part of the physical manipulation keys is within a finger movement distance.

Preferably, the at least part of the physical manipulation keys comprise: navigation direction key, confirmation key and recording control key.

Preferably, the recording control key is arranged at the lower left corner of the touch screen;

the navigation direction key and the confirmation key are arranged under the touch screen, and the central points of the navigation direction key, the confirmation key and the touch screen are positioned on the same vertical central axis.

By means of the technical scheme, the recording pen provided by the application comprises the main body module, the directional microphone and the omnidirectional microphone array, wherein the omnidirectional microphone array comprises at least two omnidirectional microphones, namely, the recording pen is simultaneously provided with the directional microphone and the omnidirectional microphone array, environmental sounds can be picked up in a near field and a far field, and the recording pen is suitable for multiple different scenes. Furthermore, the application still provides a directional microphone and omnidirectional microphone array's overall arrangement mode, considers directional microphone pickup's directionality and its great volume promptly, and creative will directional microphone sets up in the top of main part module, make full use of the great space in main part module top and hold directional microphone, and the main part module top is natural can not shelter from directional microphone pickup direction. In addition, each omnidirectional microphone in the omnidirectional microphone array is arranged on the front surface of the main body module, so that the omnidirectional microphones cannot be shielded in use, and the front surface with larger surface area is more beneficial to layout of each omnidirectional microphone, so that different pickup divergences of different omnidirectional microphones are ensured, and the processing of a subsequent noise reduction algorithm is supported.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a recording pen according to an embodiment of the present application;

fig. 2 is an oblique view of a recording pen according to an embodiment of the present application;

fig. 3 is a front view of a recording pen provided in an embodiment of the present application;

fig. 4 is a cross-sectional view along a vertical central axis of the recording pen according to an embodiment of the present application;

fig. 5 illustrates an exemplary hardware schematic of the recording pen circuit.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The application provides a recording pen, which is simultaneously provided with a directional microphone and an omnidirectional microphone array and can pick up environmental sounds in a near field and a far field.

Next, the structure of the recording pen of the present application will be described with reference to fig. 1 to 5.

In this embodiment, the recording pen may include:

a body module 100, an omnidirectional microphone array 201, and a directional microphone 202.

The main body module 100 is a main body structure of a recording pen. For convenience of description, the outer surface of the body module 100 is defined as follows:

the body module 100 includes front and rear surfaces, left and right side surfaces, and upper and lower top surfaces.

Wherein the omnidirectional microphone array 201 comprises at least two omnidirectional microphones, and the directional microphone and the omnidirectional microphone array are used for picking up the ambient sound.

The environmental sounds picked up by the directional microphone and the omnidirectional microphone array can comprise scene sounds, speaking sounds and the like, and the sounds in the microphone sound receiving environment can be picked up.

For the omnidirectional microphone array 201, it may be used for 360-degree omnidirectional sound pickup of a recording scene, and a moving-coil microphone, an aluminum ribbon microphone, a silicon microphone, or the like may be used. Taking silicon wheat as an example, the consistency is good, the self-adaptive distance can reach 3-5 meters, and the recording requirement of a small scene can be completely met. By adopting the silicon microphone, the characteristics of high sensitivity and consistent phase can be utilized, and the sound source positioning and narrow beam calculation accuracy are facilitated. In the application, sound pickup sampling can be carried out by adopting different sampling rates and different accuracies such as the sampling rate and the sampling accuracy which are more than or equal to 16KHZ and 24bit, and sound processing modules such as sound source positioning, narrow beam noise reduction, echo cancellation and the like are combined, so that the output recording data stream is more favorable for improving the accuracy of voice recognition transcription.

For directional microphone 202, also known as a super-directional microphone, which can only pick up sound in a single direction, the sensitivity to ambient sound in the pick-up direction is higher than that in other directions. The directional microphone 202 may be a condenser microphone, such as a micro-electromechanical microphone, an electret condenser microphone, or the like. The directional microphone 202 can be suitable for directional remote high-fidelity pickup scenes, and the recording tone quality and the recording fidelity of the directional microphone 202 are far higher than those of a silicon microphone. Through adopting different sampling rate different precision to carry out the pickup, can realize remote high-fidelity recording, can restore more real, clear recording scene, when the sampling rate and the sampling precision pickup collection that are not less than 96KHZ, 24bit are adopted to the example, its radio reception distance can reach more than 15 meters.

The omnidirectional microphone array 201 is used to reduce noise of a sound signal. The directional microphone 202 may be used for directional mode pickup with better directivity, where the reverse sound is physically filtered out. Through the cooperation of the directional microphone and the omnidirectional microphone array, a good sound pickup effect can be achieved.

The recording pen that this application embodiment provided, through dispose directional microphone and omnidirectional microphone array simultaneously, wherein directional microphone is applicable to far field pickup, and omnidirectional microphone array is applicable to near field pickup, consequently can be at near field and far field pickup, is applicable to multiple different scenes, therefore the user only need carry the recording pen of this application can use at a plurality of different scenes, need not carry the recording pen of two kinds of different grade types and switch the use, therefore the operation is more convenient.

Further, the layout of the omnidirectional microphone array 201 and the directional microphone 202 is described.

Each of the omni-directional microphones of the omni-directional microphone array 201 may be disposed at a front surface, a rear surface, or a side surface of the body module 100. Fig. 1 merely illustrates one arrangement. The front surface of the main body module is used as an example, the front surface of the main body module cannot be shielded when in use, and the area of the front surface of the main body module is large enough, so that all the omnidirectional microphones can be more favorably arranged, pickup convergence of different omnidirectional microphones is ensured, and processing of a subsequent noise reduction algorithm is sufficiently supported.

The directional microphone 202 may be one or more, and fig. 1 illustrates an example of a single directional microphone 202 in this embodiment.

Alternatively, the typical diameter may be up to about 10mm due to the large volume of the directional microphone 202 compared to a silicon microphone. Therefore, in the present embodiment, the directional microphone 202 may be disposed at the top of the main body module 100, so as to fully utilize the space at the top for accommodating the directional microphone 202, and the top of the main body module 100 does not naturally shield the sound pickup direction of the directional microphone 202. Further, by arranging the directional microphone 202 at the top, the arrangement at other positions of the main body module 100 is avoided, and interference to other components such as a main board is caused, so that the layout of the whole components is more reasonable.

The recording pen provided by the embodiment of the application comprises a main body module, a directional microphone and an omnidirectional microphone array, wherein the omnidirectional microphone array comprises at least two omnidirectional microphones, namely, the recording pen is simultaneously provided with the directional microphone and the omnidirectional microphone array, and can pick up environmental sounds in a near field and a far field, so that the recording pen is suitable for multiple different scenes. Furthermore, the application still provides a directional microphone and omnidirectional microphone array's overall arrangement mode, considers directional microphone pickup's directionality and its great volume promptly, and creative will directional microphone sets up in the top of main part module, make full use of the great space in main part module top and hold directional microphone, and the main part module top is natural can not shelter from directional microphone pickup direction. In addition, each omnidirectional microphone in the omnidirectional microphone array is arranged on the front surface of the main body module, so that the omnidirectional microphones cannot be shielded in use, and the front surface with larger surface area is more beneficial to layout of each omnidirectional microphone, so that different pickup divergences of different omnidirectional microphones are ensured, and the processing of a subsequent noise reduction algorithm is supported.

The recording pen is provided with the directional microphone 202 and the omnidirectional microphone array 201, so that pickup of the recording pen is composed of the omnidirectional microphone array 201 and the directional microphone 202 and respectively records, wherein pickup data of the omnidirectional microphone array can be processed through echo cancellation, noise reduction and the like to obtain a recording data stream for subsequent identification and transcription. The pickup data of the directional microphone can be processed by echo cancellation to obtain high-fidelity recording, so that the recording audibility is improved.

The two parts of recording ensure the transcription efficiency and accuracy, ensure the recording audibility of human ears and restore the truest high-fidelity field environment sound.

Further, when the directional microphone 202 is single, it may be disposed at one end or at a middle position of the top of the body module, and as shown in fig. 1, the directional microphone 202 may be disposed at a top upper right corner position. Of course, the above merely illustrates one exemplary effect of the placement location, and in addition, the directional microphone 202 may be placed in the top upper left corner or other locations.

When the directional microphone 202 is disposed at the top end:

in order to ensure that the omnidirectional microphone array and the directional microphone 202 keep a sufficient distance and do not generate inter-device interference, and simultaneously, in order to ensure that when the omnidirectional microphone array receives sound in all directions, the pickup effect is different, so that a better effect is achieved when the noise is reduced in contrast, the omnidirectional microphones in the omnidirectional microphone array 201 can be arranged on the vertical central axis of the front surface of the main body module 100 at intervals, wherein the arrangement positions of the omnidirectional microphones on the vertical central axis can be various, and the distance between any two omnidirectional microphones is ensured to be large enough and not to generate inter-device interference. Two omnidirectional microphones as the example in fig. 1 are respectively arranged at the upper part and the lower part of a vertical central axis, so that the omnidirectional property of sound pickup is ensured. And the distance is larger through the up-down layout, so that the environmental sounds picked up by the up-down omnidirectional microphones are different, and the noise reduction algorithm is convenient to compare and reduce noise.

Referring to the example of fig. 1, for two omnidirectional microphones, one of the microphones may be disposed on the upper portion of the vertical central axis above the touch screen, and the other microphone may be disposed on the lower portion of the vertical central axis below the navigation direction key. Of course, fig. 1 merely illustrates an alternative arrangement position, and the two omnidirectional microphones may be arranged at other positions on the vertical central axis, and of course, the omnidirectional microphone located at the upper part of the vertical central axis may be arranged at a distance from the top directional microphone in consideration of the inter-device interference problem.

In the above example, in addition to the situation that each omnidirectional microphone in the omnidirectional microphone array is arranged on the vertical central axis at intervals, a plurality of other parallel vertical lines may be selected on a side of the vertical central axis away from the directional microphone, so that each omnidirectional microphone in the omnidirectional microphone array is arranged on the vertical central axis and each selected parallel vertical line in a distributed manner.

When the directional microphone 202 is disposed in the middle of the top:

in order to ensure that the omnidirectional microphone array and the directional microphone 202 keep a sufficient distance and do not generate inter-device interference, each omnidirectional microphone in the omnidirectional microphone array 201 may be disposed on one side or both sides of the front surface of the main body module 100, so that the omnidirectional microphone in the omnidirectional microphone array and the directional microphone keep a sufficient distance and avoid device interference.

Alternatively, each omnidirectional microphone of the omnidirectional microphone array 201 may be disposed symmetrically with respect to the vertical central axis on both sides of the front surface of the main body module 100.

Of course, the above description only takes a single directional microphone as an example, the number of the directional microphones may also be two or more, and a plurality of directional microphones may be arranged at intervals on the top of the main body module, so as to ensure that no interference is generated between the directional microphones. Meanwhile, for each omnidirectional microphone in the omnidirectional microphone array, the arrangement position of each omnidirectional microphone on the front surface of the main body module needs to keep a certain distance from each directional microphone, so that interference is avoided.

In another embodiment of the present application, a structure of the body module 100 is described.

As shown in fig. 2, the top and bottom of the body module 100 may be provided in an arc-shaped configuration. The front and rear surfaces of the main body module 100 may be configured as a planar structure, so that it is convenient to arrange some common devices, such as physical keys, a display screen, etc., on the planar structure.

Furthermore, smooth transition connection can be adopted between the planar structures on the front surface and the rear surface and the arc structures on the top and the bottom, so that the arc structures and the planar structures are in smooth transition, and the gripping hand feeling is better due to the integral forming.

Wherein, the smooth transition connection between the front and back surfaces and the upper and lower top parts can be realized by adopting an arc or other modes. For example, the front surface and the rear surface can be designed to have a flanging structure, the upper top and the lower top are arranged to be arc-shaped structures, and smooth transition connection can be formed through the flanging structure and the arc-shaped structures of the upper top and the lower top.

The main body module 100 may be made of a plastic PC material, a glass ceramic material, or other materials, and for example, the plastic PC material may be injection molded and spray painted, so that the main body module 100 is lighter, thinner, and textured. Because both ends are the arc structure about the main part module, consequently can adopt the integrative technique of moulding plastics of curved surface for main part module 100 back wholeness is higher, and it is better to handle.

The utility model provides a recording pen, its main part module has adopted the arc structural design at top and top, and the planar structure and the arc structure rounding off on two surfaces around and are connected, and the user holds the portion to be slick and sly arc structure in the use, and is higher with the palm laminating degree, feels better, even grip for a long time can not produce yet and press against the condition of hand, consequently it is more convenient to use.

Further, as shown in fig. 2, the main body of the directional microphone 202 may be integrated into the top arc structure, and a sound receiving hole may be formed in a portion of the top arc structure wrapping the main body of the directional microphone, so as to ensure normal sound receiving of the directional microphone 202.

Optionally, the main body of the directional microphone 202 may be completely integrated into the top arc structure, or may be partially integrated, which may be selected according to design requirements. By fusing the main body of the directional microphone 202 into the top arc structure, that is, by wrapping the main body of the directional microphone 202 with the top arc structure, the directional microphone 202 and the main body are fused into a whole, and the top arc structure can be used as a part of the main body and can also take the protective effect of the directional microphone 202.

Alternatively, the top of the directional microphone 202 may be embedded inside the top arc structure or may be protruded from the top arc structure.

In order to ensure that the sound pickup effect of the directional microphone 202 is not affected, in the embodiment of the present application, a sound receiving hole may be selectively formed on the upper surface, the side surface, the front surface and/or the back surface of the directional microphone 202. The sound collecting holes on the upper surface and the front surface and the back surface can be holes made of metal mesh or other materials, and the sound collecting holes on the side surface can also be holes made of metal mesh or other materials.

As shown in fig. 2, the recording pen of the present application may further include a horn assembly 300.

The horn assembly 300 can be arranged on the top arc structure, and a closed sound cavity of the horn assembly 300 is formed based on the top arc structure, so that the sound output effect is ensured.

As shown in fig. 2, the recording pen of the present application may further include a touch screen 400. The touch screen 400 may employ an LCD screen, and the resolution may employ 240 × 240 or higher to satisfy the page content display. Meanwhile, the method can also be used as an interactive control interface and a display interface of the equipment state. Recording control, scene selection, transcription character display, translation, setting and the like can be achieved through the touch screen 400, and compared with a simple physical key, the operation is faster.

Still further, the recording pen of the present application may further include an entity control button. As shown in fig. 3, the physical manipulation keys may include the following:

navigation direction key 501, confirmation key 502, recording control key 503, on/off key 504, and volume adjustment key 505.

The navigation direction key 501 and the confirmation key 502 cooperate with each other, and the touch screen 400 can be used to operate the displayed content, for example, select a desired file or function by moving up and down, left and right, and at the same time, confirm the selected file or function by the confirmation key 502 to execute the next operation.

The navigation direction keys 501 may include four keys for indicating four navigation directions, i.e., up, down, left, and right, respectively, and a user may practice movement of a focus in a touch screen in a corresponding direction by triggering the corresponding keys. The focus may be in the form of a cursor, a selection frame, or the like. The confirm button 502 is used to confirm the file or function selected by the cursor.

The confirmation key may be disposed in the middle of the four navigation direction keys as shown in fig. 3. Besides, the confirmation key may be disposed above, below or in the lower left or right corner of the touch screen 400.

In the example of fig. 3, the confirmation key is arranged among the four navigation direction keys, so that the position occupation of the physical manipulation keys on the front surface of the main body module 100 can be saved, and the layout of each physical manipulation key is more compact and reasonable. In addition, through the layout arrangement illustrated in fig. 3, the navigation direction key 501 and the confirmation key 502 are arranged right below the touch screen 400, and the center points of the navigation direction key 501, the confirmation key 502 and the touch screen 400 are located on the same vertical central axis, so that the navigation direction key 501 and the confirmation key 502 are symmetrical with respect to the vertical central axis, and therefore, the touch distances to the navigation direction key and the confirmation key are consistent no matter the navigation direction key is used by the left hand or the right hand.

Of course, fig. 3 only illustrates an alternative layout manner of the navigation direction keys and the confirmation keys, and other arrangement positions and manners may be selected according to actual needs.

The recording control button 503 can realize a one-button recording function, that is, the recording control button 503 can be directly jumped to a recording interface by touching.

Further, the recording control button 503 may also be integrated with a voice control function, that is, the voice button and the recording control button share the same physical button, and different functions are realized through different triggering modes. For example, the short press realizes the recording control, the long press realizes the voice control, or the two-time continuous press realizes the recording control, and the three-time continuous press realizes the voice control. Through voice control, can send the voice control instruction to the recording pen to realize the control to equipment.

At least some of the above entity control keys may be disposed on the front surface of the main body module 100 and below the touch screen 400.

By disposing some of the physical manipulation keys on the front surface of the main body module 100 and below the touch screen 400, the user can switch between the touch screen and the physical manipulation keys more conveniently.

As shown in fig. 2, the navigation direction key 501, the confirmation key 502, and the recording control key 503 are disposed on the front surface of the main body module, below the touch screen 400.

The recording control button 503 may be disposed at a lower right corner or a lower left corner of the touch screen 400. Considering that most users are used to hold the device with the right hand, when the users hold the recording pen, the position of the thumb is more convenient for controlling the lower left corner of the touch screen 400, so the recording control key 503 can be arranged at the lower left corner of the touch screen 400, and the users can conveniently and flexibly control the device with fingers when holding the device with one hand.

Navigation direction keys 501 and confirmation keys 502 may be disposed directly below touch screen 400 on the same axis as touch screen 400.

In consideration of the use habits of users, in order to facilitate the users to switch flexibly between the touch screen and the entity control keys more quickly by fingers, in the embodiment of the application, the movement distance of the fingers of the users can be determined statistically, and then the position distances of the touch screen 400 and at least some of the keys (the navigation direction key 501, the confirmation key 502, and the recording control key 503) on the front surface of the main body module are set based on the movement distance, that is, the distances between the touch screen and at least some of the entity control keys are ensured to be within the set movement distance of the fingers, so that the users can switch flexibly between the touch screen and the entity control keys more flexibly, and the two control modes are fused.

In an alternative mode, the above-mentioned manner for counting the moving distance of the finger of the user may be based on the moving distance of the finger (such as the index finger or the thumb, etc.) for operating the recording pen when the user does not hold the recording pen. Besides, the distance of the up-and-down movement of the fingers (such as index finger or thumb) for operating the recording pen when the recording pen is held by the user can be used.

After the set movable distance is determined, the position of the touch screen on the front surface of the main body module can be determined firstly, then the position of the upper edge of the touch screen is taken as a starting point, the lower limit position of the set movable distance from the starting point is determined from top to bottom, and then an entity control key is arranged between the lower edge of the touch screen and the lower limit position.

Of course, the layout of the touch screen and the physical manipulation keys described above is only an example, and other arrangement positions and manners may be selected according to actual needs.

The power on/off button 504 and the volume adjustment button 505 may be provided on the left and right sides of the main body module.

The power on/off key 504 and the volume adjustment key 505 may be disposed on the same side or different sides of the main body module 100, and the disposed positions may be upper, middle, and lower portions of the sides, fig. 3 merely illustrates an optional arrangement manner, and other arrangement positions and manners may be selected according to actual needs.

As further shown in fig. 3:

the stylus of the present application may also include a data interface 506 and an audio interface 507.

The data interface 506 may be a Type-C interface, a Micro USB interface, or other types of data interfaces, and is configured to perform data transmission with an external device and provide a charging function.

The audio interface 507 may be a 3.5mm audio port, an AV audio interface, a carter head audio interface, or other types of audio interfaces, and may be capable of connecting an external headset.

In some embodiments of the present application, a layout manner of components of the recording pen is described with reference to the hardware layout diagram of the recording pen illustrated in fig. 4.

Fig. 4 illustrates a cross-sectional view along the central axis of the recorder pen. As can be seen from fig. 4:

two omnidirectional microphones 201 in the omnidirectional microphone array are distributed at the upper and lower ends of the main body module 100. The omni-directional microphone 201 may be connected to a main board through a flexible circuit board FPC. On the front surface of the body module 100, a touch screen 400 is provided. A battery 600 is disposed between the touch screen 400 and the rear surface of the body module 100.

The body module 100 is coupled by the front case 700 and the rear case 800 in a fitting manner, and forms an arc structure at the top and bottom.

Because the top and the bottom of the recording pen main body module 100 are formed with the arc structures, the main board can be extended to the inside of the arc structures of the top and the bottom, and the arc structure space of the top and the bottom is fully utilized.

In some embodiments of the present application, the data processing procedure of the recording pen is described in conjunction with the hardware schematic diagram of the recording pen circuit illustrated in fig. 5.

The recording pen comprises the following hardware structure: the system comprises a CPU (central processing unit) processor 900, an audio encoder 901, a directional microphone 202, an omnidirectional microphone array 201, a touch screen 400, an entity control button 500, a storage module 902, a power management module 903 and a battery 600.

As shown in fig. 5, the directional microphone 202 is electrically connected to the CPU processor 900 through the audio encoder 901, and the omnidirectional microphone array 201 is electrically connected to the CPU processor 900 through the audio encoder 901. In addition, the CPU processor 900 is further electrically connected to the touch screen 400, the physical manipulation key 500, the storage module 902, and the power management module 903 is further connected to a battery 600 for supplying power to each component in the recording pen.

The audio encoder 901 may convert analog audio collected by the directional microphone and the omnidirectional microphone array into digital audio, convert analog audio played by the loudspeaker into digital audio as an echo cancellation reference signal, and transmit all digital audio data to the CPU processor through digital interfaces such as I2S/TDM and I2C to perform correlation operations.

In order to ensure the synchronism and timeliness of the audio data, an independent audio encoder can be arranged for each path of analog audio to realize digital-to-analog conversion.

The CPU processor 900 is configured to receive audio data from the omnidirectional microphone array and the directional microphone, and perform voice algorithm operations such as omnidirectional microphone array and voice enhancement, data scheduling transmission, peripheral cooperative logic control, and interactive management of system applications. The CPU processor has sufficient computing power and can also provide local voice recognition and transcription services. The CPU processor can support Bluetooth and Wi-Fi wireless transmission, and the GPS positioning function is met. The recording data for recognizing the transcription after the noise reduction processing is carried out on the recording data collected by the directional microphone, the two paths of original recording data collected by the omnidirectional microphone array and the original recording data collected by the omnidirectional microphone array can be transmitted to a cloud and a wireless device in real time or at regular time in a Wi-Fi wireless transmission mode, and is used for cloud recognition, transcription, hearing back, retrieval, analysis and archiving.

The storage module 902 may be configured to store system codes, recorded data, transcription data, personal setting information, and the like, and may export or upload audio data to a cloud space through a Type-C interface or a wireless module. The wireless module can be used for starting a network, and can be used for real-time transfer and uploading. And recording sharing is realized, so that the recording pen can synchronously upload the content to the cloud space while recording, and then the content is transcribed and stored. Other terminals can synchronously hear or see the recording content and the text content, so that the real-time synchronization and real-time sharing efficiency are realized.

The power management module 903 is used for managing charging and discharging of the battery 600, and can charge the battery in a standard mode based on a 5V/2A charging protocol, so that the charging efficiency is improved, and the safety can be guaranteed.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, the embodiments may be combined as needed, and the same and similar parts may be referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A recording pen, comprising:

the system comprises a main body module, a directional microphone and an omnidirectional microphone array, wherein the omnidirectional microphone array comprises at least two omnidirectional microphones, and the directional microphone and the omnidirectional microphone array are used for picking up environmental sound;

the directional microphones are arranged on the top of the main body module, and each omnidirectional microphone in the omnidirectional microphone array is arranged on the front surface of the main body module;

the top and the bottom of the main body module are arc-shaped structures.

2. The recording pen of claim 1, wherein the directional microphone is disposed at one end of the top of the main body module, and each omnidirectional microphone of the omnidirectional microphone array is spaced apart from the vertical central axis of the front surface of the main body module.

3. The recording pen according to claim 1, wherein the directional microphone is disposed at the middle of the top of the main body module, and each of the omnidirectional microphones of the omnidirectional microphone array is disposed at both sides of the front surface of the main body module symmetrically with respect to the vertical central axis.

4. The recording pen according to claim 1, wherein the front and back surfaces of the main body module are planar structures, and the planar structures are connected with the top and bottom arc structures of the main body module in a smooth transition manner.

5. The recording pen according to claim 4, wherein the main body of the directional microphone is fused into the arc structure at the top of the main body module, and the sound receiving hole is opened at the part of the arc structure at the top, which wraps the main body of the directional microphone.

6. The recording pen as claimed in claim 5, wherein the top of the directional microphone is protruded from the arc structure of the top.

7. The recording pen according to claim 4, further comprising: a horn assembly;

the loudspeaker subassembly sets up in the arc structure at main part module top, and the arc structure based on the top forms loudspeaker subassembly's airtight sound chamber.

8. The recording pen according to claim 1, further comprising: the touch screen is arranged on the front surface of the main body module and used for displaying information and providing an interactive control interface.

9. The recording pen according to claim 8, further comprising: and at least part of the entity control keys are arranged on the front surface of the main body module and positioned below the touch screen, and are used for entering corresponding operation instructions under external trigger.

10. The stylus of claim 9, wherein a distance between the touch screen and the at least some of the physical manipulation keys is within a finger movement distance.

11. The recording pen according to claim 9, wherein the at least some of the physical manipulation keys comprise: navigation direction key, confirmation key and recording control key.

12. The recording pen according to claim 11, wherein the recording control button is disposed at a lower left corner of the touch screen;

the navigation direction key and the confirmation key are arranged under the touch screen, and the central points of the navigation direction key, the confirmation key and the touch screen are positioned on the same vertical central axis.

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