CN112053664A - Electrochromic audio control circuit and mobile terminal - Google Patents
Electrochromic audio control circuit and mobile terminal Download PDFInfo
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- CN112053664A CN112053664A CN202011040100.9A CN202011040100A CN112053664A CN 112053664 A CN112053664 A CN 112053664A CN 202011040100 A CN202011040100 A CN 202011040100A CN 112053664 A CN112053664 A CN 112053664A
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- pmos transistor
- output
- comparator
- audio processor
- terminal
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/38—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using electrochromic devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
Abstract
The invention discloses an electrochromic audio control circuit and a mobile terminal, wherein the circuit comprises: the audio processing device comprises a PMOS tube Q1, an NMOS tube Q2, a PMOS tube Q3 and a comparator D1, wherein a source electrode of the PMOS tube Q1 is connected with a power supply end, a drain electrode of the PMOS tube Q1 is connected with an input end of a color-changing film, a control electrode of the PMOS tube Q1 is connected with an output end of the comparator D1, a power supply end of the comparator D1 is connected with an output power supply of an audio processor through the PMOS tube Q3, a control electrode of the PMOS tube Q3 is connected with an output end of the audio processor, a source electrode of the NMOS tube Q2 is connected with an input end of the color-changing film, a control stage of the NMOS tube Q2 is connected with an output end of the comparator D1, and a drain electrode of the NMOS tube Q2 is grounded through a resistor R2. The scheme that the charging and discharging of the electrochromic film can be controlled through the audio differential signal of the terminal device is achieved, so that the electrochromic film can flicker along with the music rhythm of the terminal device, and the user experience is enhanced.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to an electrochromic audio control circuit and a mobile terminal.
Background
In the prior art, along with the rapid development of intelligent terminal equipment, the user also becomes higher and higher to intelligent terminal equipment's appearance design demand, however, the design scheme of terminal equipment among the prior art leaves the factory and has already been confirmed promptly, can't make the adaptability adjustment to the outward appearance colour in the later stage use.
In order to solve the defect in the prior art, a technical scheme of an electrochromic film is provided at present, but the control scheme of the electrochromic film applied to the equipment end is single at present, the presented effect is not rich enough, and the experience of a user is not good.
Disclosure of Invention
In order to solve the technical defects in the prior art, the present invention provides an electrochromic audio control circuit, which includes: a PMOS transistor Q1, an NMOS transistor Q2, a PMOS transistor Q3, and a comparator D1, wherein a source of the PMOS transistor Q1 is connected to a power supply, a drain of the PMOS transistor Q1 is connected to an input terminal of the color-changing film, a control electrode of the PMOS transistor Q1 is connected to an output terminal of the comparator D1, a resistor R3 is connected in parallel between a source of the PMOS transistor Q1 and a control electrode of the PMOS transistor Q1, a power supply terminal of the comparator D1 is connected to an output power supply of the audio processor through the PMOS transistor Q3, a control electrode of the PMOS transistor Q3 is connected to an output terminal of the audio processor, a source of the NMOS transistor Q2 is connected to an input terminal of the color-changing film, a control stage of the NMOS transistor Q2 is connected to an output terminal of the comparator D1, and a drain of the NMOS transistor Q2 is connected to ground through a resistor R2.
Optionally, the output of the audio processor is set to a high level by default, when the audio processor processes a music event, the output of the audio processor changes from the high level to the low level, the PMOS transistor Q3 is turned on, the power input of the audio processor controls the comparator D1 to be powered up through the PMOS transistor Q3, and the comparator D1 starts to operate.
Optionally, when the audio processor is not processing a music event, the output terminal of the audio processor defaults to high level, the PMOS transistor Q3 is operated in the off state, and the output power of the audio processor is not output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
Optionally, when the output power of the audio processor is not output to the positive power supply of the comparator D1 through the PMOS transistor Q3, the comparator D1 is in a non-operating state, the output terminal of the comparator D1 has no voltage output and is in a high impedance state, the resistor R3 pulls the control stage of the PMOS transistor Q1 to the power supply terminal, the power supply terminal cannot output to the input terminal of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
Optionally, when the audio processor processes a music event, the output terminal of the audio processor is switched from the high level to the low level, the PMOS transistor Q3 operates in a conducting state, and the output power of the audio processor is output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
Optionally, when the output power of the audio processor passes through the PMOS transistor Q3 is output to when the power of the comparator D1 is positive, the comparator D1 is in an operating state, if the positive differential output end of the audio processor is a high level signal, the negative differential output end of the audio processor is a low level signal, the output end of the comparator D1 is a low level, the control electrode of the PMOS transistor Q1 is a high level, the PMOS transistor Q1 is in a cut-off state, the power supply end cannot output to the input end of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
Optionally, when the output end of the comparator D1 is at a high level, the control voltage of the NMOS transistor Q2 is at a high level, the PMOS transistor Q1 operates in an on state, if the output voltage of the audio processor is discharged through the resistor R2, the output voltage of the audio processor is zero, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
Optionally, when the audio processor processes a music event, the comparator D1 is in an operating state, if the positive differential output terminal of the audio processor is a low level signal, the negative differential output terminal of the audio processor is a high level signal, the output terminal of the comparator D1 is a low level, the control terminal of the PMOS transistor Q1 is at a low level, the PMOS transistor Q1 operates in an on state, the power supply terminal outputs to the input terminal of the color-changing film through the PMOS transistor Q1, and the color-changing film is in a transparent state.
Optionally, if the output end of the comparator D1 is at a high level, the NMOS transistor Q2 controls a very low level, the PMOS transistor Q1 operates in an off state, the power source cannot output the power source to the input end of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
The invention also provides a mobile terminal which comprises the electrochromic audio control circuit.
By implementing the electrochromic audio control circuit and the mobile terminal of the invention, an electrochromic audio control circuit is provided, which comprises: a PMOS transistor Q1, an NMOS transistor Q2, a PMOS transistor Q3, and a comparator D1, wherein a source of the PMOS transistor Q1 is connected to a power supply, a drain of the PMOS transistor Q1 is connected to an input terminal of the color-changing film, a control electrode of the PMOS transistor Q1 is connected to an output terminal of the comparator D1, a resistor R3 is connected in parallel between a source of the PMOS transistor Q1 and a control electrode of the PMOS transistor Q1, a power supply terminal of the comparator D1 is connected to an output power supply of the audio processor through the PMOS transistor Q3, a control electrode of the PMOS transistor Q3 is connected to an output terminal of the audio processor, a source of the NMOS transistor Q2 is connected to an input terminal of the color-changing film, a control stage of the NMOS transistor Q2 is connected to an output terminal of the comparator D1, and a drain of the NMOS transistor Q2 is connected to ground through a resistor R2. The scheme that the charging and discharging of the electrochromic film can be controlled through the audio differential signal of the terminal device is achieved, so that the electrochromic film can flicker along with the music rhythm of the terminal device, and the user experience is enhanced to a certain extent.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention;
fig. 2 is a communication network system architecture diagram provided by an embodiment of the present invention;
FIG. 3 is a first circuit diagram of a first embodiment of the electrochromic audio control circuit of the present invention;
FIG. 4 is a second circuit diagram of a second embodiment of the electrochromic audio control circuit of the present invention;
fig. 5 is a third circuit diagram of a third embodiment of the electrochromic audio control circuit of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.
Example one
Fig. 3 is a first circuit diagram of a first embodiment of the electrochromic audio control circuit of the present invention. This embodiment proposes an electrochromic audio control circuit, this circuit includes: a PMOS transistor Q1, an NMOS transistor Q2, a PMOS transistor Q3 and a comparator D1, wherein a source of the PMOS transistor Q1 is connected to a power supply terminal (VPH), a drain of the PMOS transistor Q1 is connected to an input terminal (VIN) of the color changing film, a control terminal of the PMOS transistor Q1 is connected to an OUTPUT terminal (OUTPUT) of the comparator D1, a resistor R3 is connected in parallel between a source of the PMOS transistor Q1 and a control terminal of the PMOS transistor Q1, a power supply terminal (V +) of the comparator D1 is connected to an OUTPUT power supply (VIN) of an audio processor (CODEC) through the PMOS transistor Q3, a control terminal of the PMOS transistor Q3 is connected to an OUTPUT terminal (VEN) of the audio processor, a source of the NMOS transistor Q2 is connected to an input terminal of the color changing film, a control stage of the NMOS transistor Q2 is connected to an OUTPUT terminal of the comparator D1, and a drain of the NMOS transistor Q2 is grounded through a resistor R2.
Optionally, in this embodiment, the output of the audio processor is set to a high level by default, when the audio processor processes a music event, the output of the audio processor changes from the high level to the low level, the PMOS transistor Q3 is turned on, the power input of the audio processor controls the comparator D1 to be powered on through the PMOS transistor Q3, and the comparator D1 starts to operate.
Optionally, in this embodiment, when the audio processor is not processing a music event, the output terminal of the audio processor defaults to high level, the PMOS transistor Q3 is operated in the off state, and the output power of the audio processor is not output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
Optionally, in this embodiment, when the output power of the audio processor is not output to the positive power supply terminal of the comparator D1 through the PMOS transistor Q3, the comparator D1 is in a non-operating state, the output terminal of the comparator D1 has no voltage output and is in a high impedance state, the resistor R3 pulls the control stage of the PMOS transistor Q1 to the power supply terminal, the power supply terminal cannot output to the input terminal of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
The embodiment has the beneficial effects that by providing the electrochromic audio control circuit, the circuit comprises: a PMOS transistor Q1, an NMOS transistor Q2, a PMOS transistor Q3, and a comparator D1, wherein a source of the PMOS transistor Q1 is connected to a power supply, a drain of the PMOS transistor Q1 is connected to an input terminal of the color-changing film, a control electrode of the PMOS transistor Q1 is connected to an output terminal of the comparator D1, a resistor R3 is connected in parallel between a source of the PMOS transistor Q1 and a control electrode of the PMOS transistor Q1, a power supply terminal of the comparator D1 is connected to an output power supply of the audio processor through the PMOS transistor Q3, a control electrode of the PMOS transistor Q3 is connected to an output terminal of the audio processor, a source of the NMOS transistor Q2 is connected to an input terminal of the color-changing film, a control stage of the NMOS transistor Q2 is connected to an output terminal of the comparator D1, and a drain of the NMOS transistor Q2 is connected to ground through a resistor R2. The scheme that the charging and discharging of the electrochromic film can be controlled through the audio differential signal of the terminal device is achieved, so that the electrochromic film can flicker along with the music rhythm of the terminal device, and the user experience is enhanced to a certain extent.
Example two
Fig. 4 is a second circuit diagram of a second embodiment of the electrochromic audio control circuit of the present invention. Based on the above embodiments, in the present embodiment, when the audio processor processes a music event, the positive differential output terminal (SPK _ P) of the audio processor is a high level signal, and the negative differential output terminal (SPK _ N) of the audio processor is a low level signal.
Optionally, when the audio processor processes a music event, the output terminal of the audio processor is switched from the high level to the low level, the PMOS transistor Q3 operates in a conducting state, and the output power of the audio processor is output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
Optionally, when the output power of the audio processor passes through the PMOS transistor Q3 is output to when the power of the comparator D1 is positive, the comparator D1 is in an operating state, if the positive differential output end of the audio processor is a high level signal, the negative differential output end of the audio processor is a low level signal, the output end of the comparator D1 is a low level, the control electrode of the PMOS transistor Q1 is a high level, the PMOS transistor Q1 is in a cut-off state, the power supply end cannot output to the input end of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
Optionally, when the output end of the comparator D1 is at a high level, the control voltage of the NMOS transistor Q2 is at a high level, the PMOS transistor Q1 operates in an on state, if the output voltage of the audio processor is discharged through the resistor R2, the output voltage of the audio processor is zero, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
The present embodiment is advantageous in that the negative differential output terminal (SPK _ N) of the audio processor is set to a low level signal by setting the positive differential output terminal (SPK _ P) of the audio processor to a high level signal when the audio processor processes a music event. The scheme that the charging and discharging of the electrochromic film can be controlled through the audio differential signal of the terminal device is achieved, so that the electrochromic film can flicker along with the music rhythm of the terminal device, and the user experience is enhanced to a certain extent.
EXAMPLE III
Fig. 5 is a third circuit diagram of a third embodiment of the electrochromic audio control circuit of the present invention. Based on the above embodiments, in this embodiment, when the audio processor processes a music event, the positive differential output terminal of the audio processor is a low level signal, and the negative differential output terminal of the audio processor is a high level signal.
Optionally, when the audio processor processes a music event, the comparator D1 is in an operating state, if the positive differential output terminal of the audio processor is a low level signal, the negative differential output terminal of the audio processor is a high level signal, the output terminal of the comparator D1 is a low level, the control terminal of the PMOS transistor Q1 is at a low level, the PMOS transistor Q1 operates in an on state, the power supply terminal outputs to the input terminal of the color-changing film through the PMOS transistor Q1, and the color-changing film is in a transparent state.
Optionally, if the output end of the comparator D1 is at a high level, the NMOS transistor Q2 controls a very low level, the PMOS transistor Q1 operates in an off state, the power source cannot output the power source to the input end of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
The present embodiment has the advantage that the negative differential output of the audio processor is set to a high level signal by setting the positive differential output of the audio processor to a low level signal when the audio processor is processing a music event. The scheme that the charging and discharging of the electrochromic film can be controlled through the audio differential signal of the terminal device is achieved, so that the electrochromic film can flicker along with the music rhythm of the terminal device, and the user experience is enhanced to a certain extent.
Example four
Based on the above embodiment, the present invention further provides a mobile terminal, which includes the electrochromic audio control circuit as described in any one of the above embodiments. The specific implementation of this embodiment is the same as the above-mentioned embodiment of the electrochromic audio control circuit, and is not described herein again. The embodiment realizes a charging and discharging scheme capable of controlling the electrochromic film through the audio differential signal of the terminal equipment, so that the electrochromic film can flash along with the music rhythm of the terminal equipment, and the user experience is enhanced to a certain extent.
It should be noted that, in this document, 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 like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An electrochromic audio control circuit, characterized in that the circuit comprises: a PMOS transistor Q1, an NMOS transistor Q2, a PMOS transistor Q3, and a comparator D1, wherein a source of the PMOS transistor Q1 is connected to a power supply, a drain of the PMOS transistor Q1 is connected to an input terminal of the color-changing film, a control electrode of the PMOS transistor Q1 is connected to an output terminal of the comparator D1, a resistor R3 is connected in parallel between a source of the PMOS transistor Q1 and a control electrode of the PMOS transistor Q1, a power supply terminal of the comparator D1 is connected to an output power supply of the audio processor through the PMOS transistor Q3, a control electrode of the PMOS transistor Q3 is connected to an output terminal of the audio processor, a source of the NMOS transistor Q2 is connected to an input terminal of the color-changing film, a control stage of the NMOS transistor Q2 is connected to an output terminal of the comparator D1, and a drain of the NMOS transistor Q2 is connected to ground through a resistor R2.
2. The electrochromic audio control circuit according to claim 1, wherein the output of the audio processor is default to high, when the audio processor processes a music event, the output of the audio processor changes from high to low, the PMOS transistor Q3 is turned on, the power input of the audio processor controls the comparator D1 to be powered up through the PMOS transistor Q3, and the comparator D1 starts to operate.
3. The electrochromic audio control circuit according to claim 2, wherein when the audio processor is not processing a music event, the output terminal of the audio processor defaults to high level, the PMOS transistor Q3 is operated in an off state, and the output power of the audio processor is not output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
4. The electrochromic audio control circuit according to claim 3, wherein when the output power of the audio processor is not outputted to the positive power supply of the comparator D1 through the PMOS transistor Q3, the comparator D1 is in a non-operating state, the output terminal of the comparator D1 has no voltage output and is in a high impedance state, the resistor R3 pulls the control stage of the PMOS transistor Q1 to the power supply terminal, the power supply terminal cannot be outputted to the input terminal of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
5. The electrochromic audio control circuit according to claim 4, wherein when the audio processor processes a music event, the output terminal of the audio processor is switched from the high level to the low level, the PMOS transistor Q3 is operated in a conducting state, and the output power of the audio processor is output to the positive power supply of the comparator D1 through the PMOS transistor Q3.
6. The electrochromic audio control circuit according to claim 5, wherein when the output power of the audio processor is outputted to the positive power supply terminal of the comparator D1 through the PMOS transistor Q3, the comparator D1 is in an operating state, if the positive differential output terminal of the audio processor is a high signal, the negative differential output terminal of the audio processor is a low signal, the output terminal of the comparator D1 is a low signal, the PMOS transistor Q1 is a high control terminal, the PMOS transistor Q1 is in an off state, the power supply terminal cannot output to the input terminal of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
7. The electrochromic audio control circuit according to claim 6, wherein when the output terminal of the comparator D1 is high, the control voltage of the NMOS transistor Q2 is high, the PMOS transistor Q1 is operated in a conducting state, if the output voltage of the audio processor is discharged through the resistor R2, the output voltage of the audio processor is zero, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
8. The electrochromic audio control circuit according to claim 7, wherein when the audio processor is processing a music event, the comparator D1 is in an active state, if the positive differential output of the audio processor is a low signal, the negative differential output of the audio processor is a high signal, the output of the comparator D1 is a low signal, the PMOS transistor Q1 is controlled to be a low signal, the PMOS transistor Q1 is in an active state, the power supply terminal outputs to the input terminal of the color-changing film through the PMOS transistor Q1, and the color-changing film is in a transparent state.
9. The electrochromic audio control circuit according to claim 8, wherein if the output terminal of the comparator D1 is at a high level, the NMOS transistor Q2 is controlled to be at a low level, the PMOS transistor Q1 is operated in a cut-off state, the power source terminal cannot output to the input terminal of the color-changing film through the PMOS transistor Q1, the input voltage of the color-changing film is zero, and the color-changing film is in a non-transparent state.
10. A mobile terminal characterized in that it comprises an electrochromic audio control circuit according to any of claims 1-9.
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| CN112053664B (en) | 2022-12-13 |
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