Recording pen

Abstract

The utility model relates to the technical field of electronic equipment, and provides a recording pen, which comprises a shell, a sound pickup, a circuit board and an ultrasonic transducer, the sound pick-up, the ultrasonic transducer and the circuit board are respectively arranged in the shell; the sound pick-up and the ultrasonic transducer are electrically connected with the circuit board respectively; in the recording process of the recording pen, the circuit board is used for controlling the ultrasonic transducer to carry out vibration prompting. Under the condition that a user needs to be prompted, the recording pen provided by the utility model can realize vibration touch and does not give out sound which can be captured by human ears, so that not only is the user prompted, but also the sound which can be captured by human ears is not given out, the conference or interview of the user cannot be interrupted or influenced, and the user experience is improved. And the prompt sound cannot be recorded into the recording file, so that the recording effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a recording pen. Background Art

[0002] The voice recorder can record conversations, meetings, and various occasions. During the recording process, the voice recorder usually uses vibration to prompt the user as the various scenes switch.

[0003] Currently, voice recorders primarily use motor vibrations, either through a rotor motor or a linear motor, to generate vibrations throughout the device. While users experience the vibrations, they also hear the sound, disrupting ongoing meetings. The vibrations can also be recorded during recordings, affecting the quality of the recording. Utility Model Content

[0004] The utility model provides a voice recorder, which is used to solve the problem in the prior art that vibration prompts affect the recording effect during the recording process of the voice recorder.

[0005] The utility model provides a recording pen, comprising: a shell, a pickup, a circuit board and an ultrasonic transducer;

[0006] The microphone, the ultrasonic transducer and the circuit board are respectively arranged on the housing; the microphone and the ultrasonic transducer are respectively electrically connected to the circuit board;

[0007] During the recording process of the voice recorder, the circuit board is used to control the ultrasonic transducer to vibrate to provide prompts.

[0008] According to the utility model, a recording pen further includes: a detection element, the detection element being used to detect whether the user is holding the housing;

[0009] The ultrasonic transducer is provided on the grip portion of the housing;

[0010] The detection element is electrically connected to the circuit board, and the circuit board is used to control the vibration state of the ultrasonic transducer according to information fed back by the detection element.

[0011] According to a recording pen provided by the utility model, the ultrasonic transducer includes a plurality of ultrasonic transducer units;

[0012] The plurality of ultrasonic transducer units are electrically connected to the circuit board respectively, and the vibration frequencies of the ultrasonic transducer units are different;

[0013] When the detection element detects that the gripping portion is not gripped, the circuit board controls the one with the smallest vibration frequency among the plurality of ultrasonic transducer units to vibrate;

[0014] In a case where the detection element detects that the gripping portion is gripped, the circuit board controls the ultrasonic transducer units except for the one with the smallest vibration frequency to vibrate selectively.

[0015] According to the voice recorder provided by the utility model, the circuit board is electrically connected to the functional components of the voice recorder, and the functional components include at least one of a pickup and a speaker;

[0016] The ultrasonic transducer unit with the smallest vibration frequency can collect the user's knocking signal on the shell, and the circuit board is used to control the working state of the functional device according to the knocking signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

[0017] According to a recording pen provided by the utility model, the circuit board includes a controller, a signal processing circuit and an ultrasonic drive amplifier;

[0018] The one with the smallest vibration frequency among the ultrasonic transducer units is electrically connected to the controller via the signal processing circuit; the controller is electrically connected to the plurality of ultrasonic transducer units respectively via the ultrasonic drive amplifier;

[0019] The signal processing circuit is used to process the signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

[0020] According to a voice recorder provided by the utility model, the signal processing circuit includes an amplifier and a filter;

[0021] The one with the smallest vibration frequency among the ultrasonic transducer units, the amplifier, the filter, and the controller are electrically connected in sequence.

[0022] According to the recording pen provided by the utility model, the housing has a receiving cavity and an opening communicating with the receiving cavity;

[0023] The ultrasonic transducer is arranged in the accommodating cavity and exposed from the opening.

[0024] According to the voice recorder provided by the utility model, the multiple ultrasonic transducer units are connected to the circuit board via a coaxial line.

[0025] According to the voice recorder provided by the utility model, two ultrasonic transducers are provided, and the two ultrasonic transducers are separately arranged on the gripping portion of the shell.

[0026] According to the utility model, a recording pen is provided, which also includes a light sensor and an indicator light;

[0027] The light sensor is electrically connected to the circuit board, and the circuit board is electrically connected to the indicator light; the indicator light is arranged beside the ultrasonic transducer, and the light sensor is used to collect the light intensity of the environment where the recording pen is located;

[0028] The circuit board is used to control the indication state of the indicator light according to the signal fed back by the light sensor.

[0029] The voice recorder provided by the utility model is provided with an ultrasonic transducer in the shell, and uses the ultrasonic transducer to generate mechanical waves and ultrasonic waves. Based on the characteristic that the ultrasonic transducer can enable the user to only feel the tactile sensation of vibration but not hear the ultrasonic waves, when it is necessary to prompt the user, the voice recorder can achieve the tactile sensation of vibration without emitting a sound that can be captured by the human ear. It can prompt the user without emitting a sound that can be captured by the human ear, will not interrupt or affect the user's meeting or interview, and will not cause the prompt sound to be recorded in the recording file, thereby ensuring the recording effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the ultrasonic transducer provided by the utility model installed on the shell.

[0032] Figure 2 This is a schematic diagram of the main structure of the ultrasonic transducer provided by the utility model installed on the shell.

[0033] Figure 3 This is a control logic block diagram of the voice recorder provided by the utility model.

[0034] Figure 4 This is a flow chart of the vibration prompt of the recording pen provided by the utility model.

[0035] Reference numerals:

[0036] 1. Housing; 2. Pickup;

[0037] 3. Circuit board; 31. Controller; 32. Signal processing circuit; 33. Ultrasonic drive amplifier;

[0038] 4. Ultrasonic transducer; 41. First ultrasonic transducer unit; 42. Second ultrasonic transducer unit; 43. Third ultrasonic transducer unit;

[0039] 5. Detection element; 6. Speaker; 7. Light sensor; 8. Indicator light. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] The following combination Figure 1-Figure 4 , the voice recorder provided by the embodiment of the utility model is described in detail through specific embodiments and application scenarios.

[0042] In some embodiments, as Figure 1 and Figure 3 As shown, this embodiment provides a voice recorder, including: a shell 1, a pickup 2, a circuit board 3 and an ultrasonic transducer 4.

[0043] The microphone 2 , the ultrasonic transducer 4 and the circuit board 3 are respectively arranged in the housing 1 ; the microphone 2 and the ultrasonic transducer 4 are respectively electrically connected to the circuit board 3 .

[0044] During the recording process of the voice recorder, the circuit board 3 is used to control the ultrasonic transducer 4 to vibrate to provide prompts.

[0045] It is understandable that the microphone 2 is used to pick up the user's voice for recording.

[0046] During recording, if the recording mode changes, such as when the recording environment or person changes, the user needs to be prompted to quickly switch the recording category. Alternatively, if the recording environment changes, such as when a video conference is needed during recording, or when a video request or phone call comes in during recording, the user needs to be prompted to answer or block the call. The recording pen needs to provide a prompt to remind the user of changes in the recording environment or the need to change the recording mode.

[0047] The ultrasonic transducer 4 can convert electrical energy into mechanical energy, thereby generating ultrasonic waves. The ultrasonic transducer 4 uses the piezoelectric effect to generate vibration tactile sensations and ultrasonic waves. Since the human hearing range for sound waves is from 20Hz to 20kHz, and the frequency of ultrasonic waves is greater than 20Hz, ultrasonic waves cannot be heard by the user. Therefore, the user can only feel the vibration tactile sensation but cannot hear the sound, so that the microphone 2 will not pick up vibration noise. Moreover, the recording pen only vibrating without making any sound will not affect or interrupt the ongoing meeting or interview, avoiding interference with the user of the recording pen.

[0048] The voice recorder provided by the present invention is provided with an ultrasonic transducer 4 in the shell 1, and uses the ultrasonic transducer 4 to generate mechanical waves and ultrasonic waves. Based on the characteristic that the ultrasonic transducer 4 can enable the user to only feel the tactile sensation of vibration but cannot hear the ultrasonic waves, when it is necessary to prompt the user, the voice recorder can achieve the tactile sensation of vibration without emitting a sound that can be captured by the human ear. It can prompt the user without emitting a sound that can be captured by the human ear, will not interrupt or affect the user's meeting or interview, and will not cause the prompt sound to be recorded in the recording file, thereby ensuring the recording effect.

[0049] In some embodiments, as Figure 1 and Figure 3 As shown, the voice recorder of this embodiment further includes: a detection element 5, which is used to detect whether the user is holding the shell 1.

[0050] The ultrasonic transducer 4 is disposed on the grip portion of the housing 1 .

[0051] The detection element 5 is electrically connected to the circuit board 3 , and the circuit board 3 is used to control the vibration state of the ultrasonic transducer 4 according to the information fed back by the detection element 5 .

[0052] It is understandable that based on the user's holding habits, the housing 1 is provided with a grip portion, which is generally located at the lower middle side of the housing 1. When the user is holding the housing 1, since the user's hand is in contact with the housing 1, only a small vibration tactile sensation is required for the user to perceive the prompt; when the user is not holding the housing 1, the user's hand is separated from the housing 1, and a slightly larger vibration tactile sensation is required for the user to perceive the prompt.

[0053] The ultrasonic transducer 4 is arranged in the gripping part of the shell 1, so that when the user holds the shell 1, the hand contacts the shell 1 in the area where the ultrasonic transducer 4 is located, and the slight vibration of the ultrasonic transducer 4 can be sensed by the user, thereby improving the sensitivity of the vibration prompt of the ultrasonic transducer 4.

[0054] Furthermore, the ultrasonic transducer 4 can vibrate at either a relatively low frequency or a relatively high frequency. Different vibration frequencies of the ultrasonic transducer 4 can produce different vibratory tactile sensations. When the ultrasonic transducer 4 vibrates at a relatively low frequency, the vibratory tactile sensation is relatively strong and propagates farther. However, when the ultrasonic transducer 4 vibrates at a relatively high frequency, the vibratory tactile sensation is relatively weak and propagates closer, but the vibration has better directionality and is focused on the grip. In this way, users can differentiate between different vibratory tactile sensations based on their varying tactile needs, thereby providing them with different content and types of vibration prompts.

[0055] Optionally, the detection element 5 can be a specific absorption rate sensor, also known as a SAR value sensor, which detects the proximity of the recorder to the user by detecting the radio frequency energy emitted when the recorder is used near the user. The detection element 5 can also be a capacitive sensor, which can detect the change in capacitance between the user's hand and the recorder to detect whether the recorder is being held by the user. The detection element 5 can also be a proximity sensor, which determines whether the user is holding the recorder by detecting the force applied by the user to the housing 1 of the recorder.

[0056] This embodiment uses the detection element 5 to detect the user's holding state of the shell 1, so that the circuit board 3 switches the vibration state of the ultrasonic transducer 4, and adopts corresponding vibration touch in the holding state and the non-holding state, so as to better provide vibration prompts to the user and enhance the effect of the vibration prompts.

[0057] In some embodiments, as Figure 1 、 Figure 2 and Figure 3 As shown, the ultrasonic transducer 4 of this embodiment includes a plurality of ultrasonic transducer units.

[0058] The plurality of ultrasonic transducer units are electrically connected to the circuit board 3 , respectively, and the vibration frequencies of the ultrasonic transducer units are different.

[0059] When the detection element 5 detects that the holding portion is not being held, the circuit board 3 controls the one with the smallest vibration frequency among the plurality of ultrasonic transducer units to vibrate.

[0060] When the detection element 5 detects that the gripping portion is gripped, the circuit board 3 controls the multiple ultrasonic transducer units except the one with the smallest vibration frequency to vibrate selectively.

[0061] It is understandable that, according to the different frequencies of ultrasonic waves emitted by the ultrasonic transducer 4, multiple ultrasonic transducer units with different vibration frequencies can be set in the ultrasonic transducer 4. Each ultrasonic transducer unit can emit ultrasonic waves of a specific frequency, so that the ultrasonic transducer 4 can achieve a wider range of ultrasonic wave emission to achieve different vibration tactile sensations.

[0062] When the grip is not held by the user, the circuit board 3 controls the ultrasonic transducer unit with the smallest vibration frequency to vibrate. At this time, the vibration is more tactile, and the ultrasonic transducer unit can emit ultrasonic waves in different directions, thereby providing prompts to the user to the greatest extent.

[0063] When the grip is held by the user, the circuit board 3 controls the ultrasonic transducer 4 with a higher vibration frequency to vibrate, and can determine the specific requirements for the vibration frequency according to the different types of notifications or prompts, and select the corresponding ultrasonic transducer unit. For example, when a customer calls in, for more important customers or more urgent events, a medium-frequency ultrasonic transducer 4 can be used for vibration prompts. If the urgency of the incoming call is not high, a high-frequency ultrasonic transducer 4 can be used for vibration prompts. The circuit board 3 specifically distinguishes and defines the specific application scenarios, and controls the selection of the appropriate ultrasonic transducer unit and the vibration prompt.

[0064] In some embodiments, as Figure 4 As shown, the plurality of ultrasonic transducer units include a first ultrasonic transducer unit 41, a second ultrasonic transducer unit 42, and a third ultrasonic transducer unit 43. The first ultrasonic transducer unit 41 transmits low-frequency ultrasonic waves, and the frequency of the ultrasonic waves transmitted by the first ultrasonic transducer unit 41 is 20kHz to 40kHz; the second ultrasonic transducer unit 42 transmits medium-frequency ultrasonic waves, and the frequency of the ultrasonic waves transmitted by the second ultrasonic transducer unit 42 is 100kHz to 1MHz; the third ultrasonic transducer unit 43 transmits high-frequency ultrasonic waves, and the frequency of the ultrasonic waves transmitted by the third ultrasonic transducer unit 43 is above 1MHz.

[0065] In this embodiment, a plurality of ultrasonic transducer units with different vibration frequencies are arranged on the ultrasonic transducer 4. The circuit board 3 can control different ultrasonic transducer units to vibrate and prompt based on whether the gripping part is held or not and different application scenarios, thereby enriching the application scenarios of the voice recorder and achieving the effect that different vibration tactile sensations represent different types of prompts.

[0066] In some embodiments, as Figure 3 As shown, the circuit board 3 of this embodiment is electrically connected to the functional components of the voice recorder, and the functional components include at least one of the microphone 2 and the speaker 6.

[0067] The ultrasonic transducer unit with the smallest vibration frequency can collect the user's knocking signal on the shell 1, and the circuit board 3 is used to control the working state of the functional device according to the knocking signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

[0068] It is understandable that the functional component of the recording pen can be a microphone 2 for picking up the user's voice, or a speaker 6 for playing the audio information of the recording pen.

[0069] The piezoelectric ceramic vibrator of the ultrasonic transducer 4 has both piezoelectric and inverse piezoelectric effects. The ultrasonic transducer 4 converts electrical signals into sound waves through the piezoelectric effect, and converts sound waves into electrical signals through the inverse piezoelectric effect. When the ultrasonic transducer 4 acts as a receiver, the sound waves generated by the user tapping the housing act on the vibration surface of the ultrasonic transducer 4, causing the mechanical vibration system of the ultrasonic transducer 4 to vibrate, thereby generating an electrical signal. Because the frequency of the user tapping the housing 1 is very low compared to ultrasonic waves, the user's tapping signal can be collected using only the ultrasonic transducer unit with the lowest vibration frequency. The ultrasonic transducer unit captures the sound waves generated by the tapping and analyzes the characteristics of the sound waves, such as frequency, amplitude, number of times, and propagation time, to identify the tapping signal and feed the tapping signal back to the circuit board 3. The circuit board 3 identifies the tapping signal collected by the ultrasonic transducer unit, obtains information such as the number of taps and the intensity of the tapping, and controls the operating status of the functional components. Since there is no audible sound caused by the interaction during the user's interaction with the recorder using the tapping operation, the high fidelity of the recording is ensured.

[0070] Specifically, the operating status of the functional device includes starting and stopping, adjusting volume, and confirming or blocking. For example, tapping can control the start and stop of the microphone 2, the start and stop of the speaker 6, and the volume of the speaker 6. In addition, tapping can also replace functional buttons, such as blocking notifications and blocking conference access.

[0071] Optionally, the user can also customize the knocking operation on the housing 1, for example, define that when the knocking force is small, the speaker 6 is operated, when the knocking force is large, the pickup 2 is operated, and continuous knocking operates the pop-up notification.

[0072] This embodiment uses an ultrasonic transducer unit with the smallest vibration frequency to collect the user's knocking signal on the shell 1, and uses the ultrasonic transducer unit as a signal acquisition device to achieve silent interaction between the user and the voice recorder. During the recording process, the user and the voice recorder can interact without generating noise that affects the recording process, thereby ensuring the recording effect and realizing silent switching and operation of the voice recorder in multiple application scenarios.

[0073] In some embodiments, as Figure 3 As shown, the circuit board 3 of this embodiment includes a controller 31 , a signal processing circuit 32 and an ultrasonic driving amplifier 33 .

[0074] The ultrasonic transducer unit with the smallest vibration frequency is electrically connected to the controller 31 via the signal processing circuit 32 ; the controller 31 is electrically connected to the plurality of ultrasonic transducer units via the ultrasonic drive amplifier 33 .

[0075] The signal processing circuit 32 is used to process the signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

[0076] It is understood that the user's tapping signal collected by the ultrasonic transducer 4 with the smallest vibration frequency is fed back to the controller 31 for identification processing after being processed by the signal processing circuit 32. The signal processing circuit 32 processes, analyzes and transforms the tapping signal.

[0077] Specifically, the controller 31 may be a PLC controller or a single chip microcomputer known in the art.

[0078] Furthermore, because the thermal and cavitation effects of ultrasound can be harmful to the human body, the ultrasound waves emitted by the multiple ultrasonic transducers need to be modulated. The ultrasonic drive amplifier 33 adjusts the vibration intensity of the ultrasound waves by varying the propagation time and number of cycles, and adjusts the number and duration of vibrations by varying the ultrasound cycle. This allows the ultrasound waves emitted by the multiple ultrasonic transducers to safely provide a vibration reminder.

[0079] In this embodiment, a controller 31, a signal processing circuit 32 and an ultrasonic drive amplifier 33 are set on the circuit board 3, so that the knocking signal can be processed by the signal processing circuit 32 and then fed back to the controller 31. The ultrasonic waves emitted by multiple ultrasonic transducer units can be modulated by the ultrasonic drive amplifier 33, so that the generated ultrasonic waves are harmless to the human body and provide vibration prompts safely.

[0080] In some embodiments, the signal processing circuit 32 of this embodiment includes an amplifier and a filter.

[0081] Among the ultrasonic transducer units, the one with the smallest vibration frequency, the amplifier, the filter, and the controller 31 are electrically connected in sequence.

[0082] It is understandable that the user's tapping signal collected by the ultrasonic transducer unit with the lowest vibration frequency is smaller and has a more chaotic waveform. In this embodiment, the amplifier amplifies the smaller tapping signal to facilitate recognition by the controller 31. At the same time, since the surrounding environment will generate interference when the tapping signal is collected, the filter can separate and filter the environmental interference from the tapping signal, making the tapping signal purer.

[0083] This embodiment provides an amplifier and a filter in the signal processing circuit 32, amplifies and filters the knocking signal collected by the ultrasonic transducer 4, and then feeds it back to the controller 31, so that the knocking signal received by the controller 31 is easier to identify and obtain, thereby improving the quality of the processing of the knocking signal.

[0084] In some embodiments, the housing 1 of this embodiment has a receiving cavity and an opening communicating with the receiving cavity.

[0085] The ultrasonic transducer 4 is disposed in the accommodating cavity and exposed from the opening.

[0086] It is understandable that the accommodating cavity of this embodiment can accommodate the circuit board 3 , the pickup 2 and the ultrasonic transducer 4 .

[0087] The opening in the housing 1 allows for the hollowing out of the ultrasonic transducer 4. The ultrasonic transducer 4 is exposed through the opening, which reduces reflection and absorption of ultrasonic waves by the housing 1, improves ultrasonic radiation efficiency, and avoids ultrasonic energy loss. Furthermore, the ultrasonic transducer 4 generates heat during operation, and the opening facilitates heat dissipation, preventing overheating and extending the service life of the ultrasonic transducer 4.

[0088] In some embodiments, the plurality of ultrasonic transducer units of this embodiment are connected to the circuit board 3 via a coaxial line.

[0089] It is understandable that one end of the coaxial line is connected to the circuit board 3 , and the other end is connected to the plurality of ultrasonic transducer units respectively.

[0090] The coaxial line can effectively transmit ultrasonic signals, and the shielding layer of the coaxial line can play a shielding role, reducing the impact of external electromagnetic interference on the ultrasonic signal. In addition, the coaxial line can transmit ultrasonic drive signals and can also collect the knocking signals collected by the ultrasonic transducer unit with a lower vibration frequency. Therefore, the dual functions of ultrasonic drive and signal collection can be achieved by using a single coaxial line, without the need to set up multiple wires, saving the space for setting up the wires, making the wire connection in the housing 1 simpler and easier to install and maintain.

[0091] In some embodiments, as Figure 2 As shown, in this embodiment, two ultrasonic transducers 4 are provided, and the two ultrasonic transducers 4 are separately arranged at the gripping portion of the housing 1 .

[0092] It is understandable that since the user holds the recorder from both sides, the user's hands can touch both sides of the bottom of the housing 1. Therefore, two opposite gripping parts can be provided on the housing 1, and two ultrasonic transducers 4 are respectively provided on the two gripping parts.

[0093] When the user holds the recording pen, the ultrasonic transducers 4 on both sides of the shell 1 can emit vibration prompts, and the vibration sensation received by the user is stronger, which enhances the tactile sensation of the vibration prompt to the user and makes the effect of the vibration prompt better.

[0094] In some embodiments, as Figure 3 As shown, the voice recorder of this embodiment further includes a light sensor 7 and an indicator light 8.

[0095] The light sensor 7 is electrically connected to the circuit board 3, and the circuit board 3 is electrically connected to the indicator light 8; the indicator light 8 is arranged next to the ultrasonic transducer 4, and the light sensor 7 is used to collect the light intensity of the environment where the voice recorder is located.

[0096] The circuit board 3 is used to control the indication state of the indicator light 8 according to the signal fed back by the light sensor 7 .

[0097] It is understood that the indicator light 8 can flash in conjunction with the vibration of the ultrasonic transducer 4. When the vibration is faster, the flashing frequency of the indicator light 8 increases, and when the vibration is slower, the flashing frequency of the indicator light 8 decreases. Alternatively, when the vibration is stronger, the light intensity of the indicator light 8 increases, and when the vibration is weaker, the light intensity of the indicator light 8 decreases. This allows the user to feel the vibration prompt and also produces a visual reinforcement effect, making the prompt more effective for the user.

[0098] The light sensor 7 can collect the ambient light intensity, and the circuit board 3 controls the indication state of the indicator light 8 according to the ambient light intensity, including: the light intensity, flashing frequency and color switching of the indicator light 8.

[0099] In this embodiment, a light sensor 7 and an indicator light 8 are provided, and the indicator light 8 is provided next to the ultrasonic transducer 4, so that when the ultrasonic transducer 4 vibrates to prompt, the indicator light 8 can flash in accordance with the vibration intensity and frequency, thereby improving the user's perception of the vibration prompt.

[0100] In some embodiments, the shell 1 includes a first shell, a second shell and a metal middle frame. The first shell and the second shell are connected by the metal middle frame. The metal middle frame is at least partially used as an antenna and is electrically connected to the circuit board 3.

[0101] The metal middle frame is used as a part of the antenna through the gap, and the ultrasonic transducer 4 is arranged at the position where the gap is located.

[0102] It can be understood that in this embodiment, the ultrasonic transducer 4 is installed in the gap of the metal middle frame, so that the installation space of the ultrasonic transducer 4 is relatively compact and does not occupy the additional space of the accommodating cavity in the shell 1. In addition, part of the metal middle frame is used as an antenna, realizing the dual functions of signal transmission and installation of the metal middle frame.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A recording pen, characterized in that: include: Housing, pickup, circuit board and ultrasonic transducer; The microphone, the ultrasonic transducer and the circuit board are respectively arranged on the housing; the microphone and the ultrasonic transducer are respectively electrically connected to the circuit board; During the recording process of the voice recorder, the circuit board is used to control the ultrasonic transducer to vibrate to provide prompts.

2. The recording pen according to claim 1, characterized in that: Also includes: a detection element, the detection element being used to detect whether a user is holding the housing; The ultrasonic transducer is provided on the grip portion of the housing; The detection element is electrically connected to the circuit board, and the circuit board is used to control the vibration state of the ultrasonic transducer according to information fed back by the detection element.

3. The recording pen according to claim 2, characterized in that: The ultrasonic transducer includes a plurality of ultrasonic transducer units; The plurality of ultrasonic transducer units are electrically connected to the circuit board respectively, and the vibration frequencies of the ultrasonic transducer units are different; When the detection element detects that the gripping portion is not gripped, the circuit board controls the one with the smallest vibration frequency among the plurality of ultrasonic transducer units to vibrate; In a case where the detection element detects that the gripping portion is gripped, the circuit board controls the ultrasonic transducer units except for the one with the smallest vibration frequency to vibrate selectively.

4. The recording pen according to claim 3, characterized in that: The circuit board is electrically connected to a functional component of the voice recorder, wherein the functional component includes at least one of a microphone and a speaker; The ultrasonic transducer unit with the smallest vibration frequency can collect the user's knocking signal on the shell, and the circuit board is used to control the working state of the functional device according to the knocking signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

5. The recording pen according to claim 4, characterized in that: The circuit board includes a controller, a signal processing circuit and an ultrasonic drive amplifier; The one with the smallest vibration frequency among the ultrasonic transducer units is electrically connected to the controller via the signal processing circuit; the controller is electrically connected to the plurality of ultrasonic transducer units respectively via the ultrasonic drive amplifier; The signal processing circuit is used to process the signal fed back by the ultrasonic transducer unit with the smallest vibration frequency.

6. The recording pen according to claim 5, characterized in that: The signal processing circuit includes an amplifier and a filter; The one with the smallest vibration frequency among the ultrasonic transducer units, the amplifier, the filter, and the controller are electrically connected in sequence.

7. The voice recorder according to any one of claims 1 to 6, characterized in that: The shell has a receiving cavity and an opening communicating with the receiving cavity; The ultrasonic transducer is arranged in the accommodating cavity and exposed from the opening.

8. The recording pen according to claim 3, characterized in that: The plurality of ultrasonic transducer units are connected to the circuit board via a coaxial line.

9. The recording pen according to claim 2, characterized in that: There are two ultrasonic transducers, which are respectively arranged on the gripping portion of the shell.

10. The recording pen according to claim 1, characterized in that: Also includes light sensors and indicator lights; The light sensor is electrically connected to the circuit board, and the circuit board is electrically connected to the indicator light; the indicator light is arranged beside the ultrasonic transducer, and the light sensor is used to collect the light intensity of the environment where the recording pen is located; The circuit board is used to control the indication state of the indicator light according to the signal fed back by the light sensor.

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