KR20000049769A - Remote control system of car audio - Google Patents

Abstract

PURPOSE: A system for remotely controlling a car audio, is provided to easily remote-operate many functions of a sound module, such as a cross-over, a base booster, a sub-sonic filer and an amplifier, installed inside a trunk, with an operation of a remote controller in a car. CONSTITUTION: A system for remotely controlling a car audio comprises the devices as follows. A remote controller transmitter(100). A remote controller receiver(200). A central processing unit(CPU,400) receives a signal received in the remote controller receiver, and controls components by respective functions, by receiving data of a selected function from the remote controller transmitter and performing a control function of 6 channels by a Manchester coding communication protocol. A power supplier(300). A sound module(500) outputs by processing a voice signal with a selected function according to a control signal of the CPU. A speaker(601) outputs a voice outputted from the voice module to an internal of the car. The remote controller transmitter(100) comprises the steps as follows. A key input device. A high-frequency controller is for an extension of battery durability by cutting off power of devices not requiring a necessity of an operation. A carrier generator generates a reference signal for synthesizing and modulating 16-bit transmission data of a micro computer unit(MCU) for delivery to a high-frequency signal of a microwave. A data modulation shaper performs a Manchester coding of a 3-sigma modulation system of a communication protocol, by using a reference signal generated in the carrier generation device. A data modulator implements high qualified modulation effectiveness by processing shaping of data. A microwave amplifying and delivery device transmits modulated weak frequency signal to a microwave. A function display device. A MCU controls generation of delivery data and a transmission device by generation of quantizing code by respective functions, and controls respective functions and progressing states to be displayed in the function display device.

Description

Car audio remote control system {Remote control system of car audio}

The present invention relates to a remote control system of a car audio, and more particularly, to a remote control system of a car audio that can conveniently remotely operate a sound module of various functions installed in the trunk by a simple remote control operation in a car interior.

In general, car audio is basically installed for the driver's convenience, and recently, an audio module having an optional crossover, bass booster, subsonic filter, and amplifier function is provided for better audio quality. Vehicles are increasing, and such acoustic modules are usually installed in the trunk.

However, such a conventional car audio system requires the driver to go directly to the trunk and operate it manually in order to operate the crossover, bass booster and subsonic filter functions through an acoustic module installed in the trunk of the vehicle. Therefore, there was a problem of this hassle, and due to the difference in the sound of the audio heard in the trunk and the sound in the car interior when adjusting the sound was more difficult to accurately set the audio.

The present invention has been made to solve the problems described above, the object of the various functions of the acoustic module installed in the trunk with a simple remote control operation in the car interior, for example, crossover, bass booster, subsonic filter and amplifier It is to provide a car audio remote control system that can be remotely operated.

1 is a view showing a state in which a remote control system of the car audio according to the present invention is installed in the vehicle.

Figure 2 is a block diagram showing the configuration of a car audio remote control system according to the present invention.

3 is a block diagram showing the configuration of a remote control transmitter according to the present invention;

Figure 4 is a block diagram showing the configuration of a remote control receiver, a central processing unit, a power supply and the like according to the present invention.

5 is a block diagram showing the configuration of an acoustic module according to the present invention;

<Explanation of symbols for the main parts of the drawings>

100: remote control transmitter 101: key input unit

102: MCU 103: function display unit

104: carrier generation unit 105: data modulation unit

106: microwave amplifier 107: transmitter

108: high frequency control unit 109: data modulation shaping unit

110: power supply control unit 111: power

200: remote control receiver 201: receiver

202: high frequency amplification part 203: mixing part

204 amplification and suppression unit 205 amplification unit

206: data detector 207: frequency generator

208: reference voltage setting unit 300: power supply unit

301: power control unit 302: PWM generation unit

303: PWM converter 304: rectifier

305: smoothing unit 400: central processing unit

401: reference frequency generator 500: sound module

501: low frequency amplifier 502: sound control unit

503: low pass control unit 504: low pass / high pass filter

505: low-end emphasis unit 506: sound control unit

507: first stage amplification unit 508: sound output unit

600: car audio 601: speaker

Features of the car audio remote control system according to the present invention for achieving the above object, the remote control transmitter for transmitting a control signal of a microwave frequency (RF) frequency according to the input command; A remote control receiver configured to receive a control signal of the microwave frequency; A central processing unit which receives a signal received from the remote control receiving unit, receives data of a selected function from the remote control transmitting unit, performs a 6-channel control function according to a Menchester coding communication protocol, and controls components for each function; A power supply unit employing an SMPS type power supply circuit for supplying a form required for each function as a power supply from an automobile; An acoustic module for processing and outputting an acoustic signal with a function selected according to the control signal of the central processing unit; It includes a speaker for outputting the sound output from the sound module to the interior of the vehicle.

In addition, the key input unit 1) sound control function, 2) ultra low pass control function, 3) low pass control function for each frequency, 4) high pass control function for each frequency, 5) low frequency emphasis 5-stage control function, 6) instantaneous sound The control signal of the cutting control function is input to the MCU.

In addition, the output of the sound module is output to the speaker via the car audio, the remote control transmitter is a non-directional RF method, the MCU of the remote control transmitter has a password setting function through the key input unit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a state in which a car audio remote control system according to the present invention is installed in a vehicle, Figure 2 is a block diagram showing the configuration of a car audio remote control system according to the present invention.

As shown, the present invention provides a remote control transmitter 100 for transmitting a control signal of a microwave frequency (RF) frequency according to an input command, a remote control receiver 200 for receiving a control signal of the microwave frequency (RF), and Receives the signal received from the remote control receiver 200, receives the data of the selected function from the remote control transmitter 100, performs the control function of six channels by the Menchester coding communication protocol to control the components for each function The central processing unit 400, a power supply unit 300 employing an SMPS-type power supply circuit for supplying the necessary form for each function as power supplied from an automobile, and a function selected according to a control signal of the central processing unit 400 And a sound module 500 for processing and outputting a sound signal, and a speaker 601 for outputting sound output from the sound module 500 into the vehicle.

3 is a block diagram showing the configuration of a remote control transmitter according to the present invention.

As shown in the figure, the remote control transmitter 100 includes a key input unit 101 for inputting a user's command to the MCU 102 and a portion of the MCU 102 that does not require driving to extend the life of the battery. The carrier generator 104 generates a reference signal for synthesizing the 16-bit transmission data of the MCU 102 for transmitting the microwave to the high frequency control unit 108 for extending the life of the battery by cutting off the power supply. And a data modulation shaping unit 109 for performing Menth coding of a three-sigma modulation method of a communication protocol by using the reference signal generated by the carrier generating unit 104 and data processing. A data modulator 105 for implementing a high-quality modulation efficiency, a microwave amplification unit 106 and a transmitter 107 capable of transmitting a weak radio signal modulated to microwaves, and the above functions and progression To control the generation and transmission of the transmission data by generating a function-specific quantization (16-bit) code for each function, and to display each function and the progress state on the function display (103). MCU 102 and a power supply control unit 110 for supplying the operation power 111 to the respective parts.

The carrier generator 104 generates a reference signal having a frequency stability of 100 ppm or less as a reference signal source for synthesizing data.

The data modulator 105 implements high-quality modulation efficiency by processing low-speed, high-efficiency data of 1000bps of a 16-bit data frame from which data of each function to be transmitted from the MCU 102 is realized, and the microwaves Modulation is sent to the amplifier 106.

The key input unit 101 is 1) sound control function, 2) ultra-low pass control function, 3) low-pass control function by frequency, 4) high-pass control function by frequency, 5) low-pass emphasis 5-stage control function, 6) moment The control signal of the sound cutting control function is input to the MCU 102.

Figure 4 is a block diagram showing the configuration of a remote control receiver, a central processing unit, a power supply according to the present invention.

As shown in the drawing, the remote control receiver 200 combines the reception unit 201 and the high frequency amplification unit 202 for receiving and amplifying microwave signals of high frequency and the received weak signals and signals from the local oscillator. A mixing unit 203 for selecting a frequency, an amplifying and suppressing unit 204 for obtaining constant amplification of a signal separated in the synthesis, and suppressing unnecessary parts for the above amplification degree, and an amplifying unit 205 for detecting data. And a data detector 206 for separating pure signals into pure quantum components in a signal that has been improved by amplification and shaping over several parts, a frequency generator 207 for generating a set frequency for selection of a target frequency, and a reference voltage setting. Section 208.

In addition, the power supply unit 300 includes a power control unit 301 for performing a control function for remote power supply with other devices, and a PWM generator for applying a self-feedback call feedback circuit to increase smps power supply efficiency. 302, a PWM converter 303 which induces the pwm power from the Troydal core to generate a power supply voltage required by each unit, a rectifier 304 that converts the induced voltage by PWM into direct current, and a high frequency of PWM. The linking may include a smoothing unit 305 which performs a role of removing the capacitor by the inductance and produces a high-quality DC voltage.

In addition, the central processing unit 400 includes a reference frequency generator 401.

5 is a block diagram showing the configuration of an acoustic module according to the present invention.

As shown, the acoustic module 500 amplifies the low frequency input signal input to compensate for the loss due to the sound control amplification unit 501, and 8-bit data control attenuation of -80dB at 0dB signal Acoustic control unit 502 that performs the characteristics, low-frequency control unit 503 having a 4BIT data performance function to control the low frequency components of 40HZ or less, and a function that allows the user to arbitrarily select low and high frequencies The low / high pass filter 504 controls 8 different tones with 8BIT control, the low pass emphasis unit 505 performs 5-step control of low-end sound, and POP noise generated during each function. Performing a function of stopping generation and suppressing when necessary includes a sound control unit 506, a first stage amplification unit 507 and a sound output unit 508 for finally amplifying / outputting the controlled signal.

In addition, the present invention, as shown in Figure 1, the output of the sound module 500 is configured to be output to the speaker 601 via the car audio 600.

In addition, the remote control transmitter 100 is preferably a non-directional RF method, the MCU 101 of the remote control transmitter 100 has a password setting function for preventing interference through the key input unit 102 more. desirable.

Referring to the operation of the present invention configured as described in more detail as follows.

First, a driver or a person who wants to listen to music can remotely control an acoustic module 500 such as a crossover, a bass booster, a subsonic filter, and an amplifier installed in a trunk simply by operating the remote control transmitter 100 in a car interior. have. That is, when a user operates the remote control transmitter 100 in a vehicle, an RF signal is transmitted from the remote control transmitter 100.

In more detail, as shown in FIG. 3, the key input unit 101 includes 1) a sound control function, 2) an ultra low pass control function, 3) a low pass control function by frequency, 4) a high pass control function by frequency, 5) A low-frequency emphasis 5-step control function, 6) an instantaneous sound cutting control function is input to the MCU 102. At this time, the high frequency control unit 108 cuts off the power of the part that does not require driving in the MCU 102 to extend the life of the battery in order to extend the life of the battery.

The carrier generation unit 104 generates a reference signal for synthesizing 16-bit transmission data of the MCU 102 for transmission to the microwave high frequency signal, and the data modulation shaping unit 109 performs the carrier generation unit 104. Using the reference signal generated in the), the mansit coding of the 3 sigma modulation method of the communication protocol is performed. The carrier generator 104 generates a reference signal having a frequency stability of 100 ppm or less as a reference signal source for synthesizing data.

The data modulator 105 processes the data to realize a high quality modulation efficiency, and the microwave amplifying unit 106 and the transmitting unit 107 transmit a weak radio signal modulated to the microwave. The data modulator 105 implements high-quality modulation efficiency by processing low-speed, high-efficiency data of 1000bps of a 16-bit data frame from which data of each function to be transmitted from the MCU 102 is realized, and the microwaves Modulation is sent to the amplifier 106.

In addition, the MCU 102 controls the function display unit 103 for displaying the respective functions and the progress state, and the generation of the transmission data and the transmitter 107 by generating the quantization code (16bit) for each function, and for each function and progress. The state is displayed on the function display unit 103. At this time, the power supply control unit 110 supplies the operating power 111 to the respective parts.

The control signal of the RF frequency output as described above is received by the remote control receiver 200 and transmitted to the central processing unit 400.

In more detail, as shown in FIG. 4, the receiver 201 and the high frequency amplification unit 202 receive and amplify a microwave signal of a high frequency, and the mixing unit 203 receives the weak signal and the local oscillator. Select the desired frequency by combining with the signal at.

The amplification and suppression unit 204 obtains constant amplification of the signal separated in the synthesis, suppresses the unnecessary portion for the above amplification degree, the amplification unit 205 detects the data, and the data detection unit 206 provides It is separated into pure quantum components in the signal quality that is normalized by the stereotype.

In addition, the frequency generator 207 and the reference voltage setting unit 208 generate a set frequency for the selection of the target frequency.

Thereafter, the central processing unit 400 is driven by receiving a reference frequency from the reference frequency generating unit 401, receives a signal received from the remote control receiving unit 200, and receives data of a selected function from the remote control transmitting unit 100. Receives the control function of the six channels by the Menth coding communication protocol to control the components for each function.

At this time, the power supply unit 300 is a power supply from the automobile employs a power supply circuit of the SMPS method for supplying the necessary form for each function. That is, the power controller 301 performs a control function for remote power supply with other devices, the PWM generator 302 applies a call feedback circuit of the self-feedback method to increase the smps power supply efficiency, PWM conversion The unit 303 induces the pwm power from the Troydal core to generate and generate a power supply voltage necessary for each unit.

The rectifier 304 converts the induced voltage by the PWM into a direct current, and the smoothing unit 305 performs the high frequency linking of the PWM by removing the capacitor and the inductance to produce and supply a high-quality direct current voltage.

Thereafter, the sound module 500 processes and outputs a sound signal with a function selected according to the control signal of the central processing unit 400, and the speaker 601 outputs the sound output from the sound module 500 to the interior of the vehicle. do. In this case, as shown in FIG. 1, the output of the sound module 500 may be configured to be output to the speaker 601 via a car audio 600.

Looking at the operation of the acoustic module 500 in more detail, as shown in Figure 5, the low-frequency amplifier 501 amplifies the low-frequency input signal input to the acoustic module 500 to compensate for the loss due to sound control In addition, the acoustic control unit 502 performs an attenuation characteristic of -80 dB in a signal of 0 dB by controlling 8 bits of data, and the low pass control unit 503 has a function of performing 4 bit data as a function of controlling low frequency components of 40 Hz or less. .

Low and high pass filter 504 is a function that can be used to arbitrarily select low and high frequencies, the control ability of the eight tones with 8BIT control, low-frequency emphasis unit 505 controls the five-stage control of the low-frequency sound In addition, the sound control unit 506 stops the instant occurrence of POP noise, etc. generated when performing each function, and performs the function of suppressing when necessary, the first stage amplification unit 507 and the sound output unit 508 is Final amplify / output the controlled signal.

In addition, the remote control transmitter 100 is preferably a non-directional RF method, the MCU 101 of the remote control transmitter 100 has a password setting function for preventing interference through the key input unit 102 more. desirable. Here, since the remote control transmitter 10 has a password setting function by the omnidirectional digital control method, it does not adversely affect other adjacent vehicles.

A function to set a password on the remote control is provided so that there is no risk of misuse even in case of theft, and omnidirectional control is possible because the signal transmitted from the remote control is an RF signal without necessarily pointing the remote control toward the trunk. Do.

As described above, according to the present invention, it is possible to remotely operate acoustic modules such as crossovers, bass boosters, subsonics, and the like installed in the trunk even by remote control operation in an automobile, and thus, a convenient operational effect can be obtained.

Also, it does not adversely affect other adjacent vehicles, and it has a function to set a password on the remote control, so there is no risk of misuse in case of theft, and the signal transmitted from the remote control is RF without necessarily pointing the remote control toward the trunk. Since it is a signal, there is an effect that the omnidirectional control is possible.

In addition, the conventional automotive products have many obstacles of the development of products such as data communication due to malfunction caused by various harmonics generation, but the present invention is applied to develop and synthesize the 3 sigma modulation method of the Menth coding of the communication protocol The application of the technique also has the effect of eliminating conventional obstacles.

Claims (12)

A remote control transmitter 100 for transmitting a control signal of a microwave frequency according to an input command; A remote control receiver 200 for receiving a control signal of the microwave frequency; Receives the signal received from the remote control receiver 200, receives the data of the selected function from the remote control transmitter 100, performs the control function of 6 channels by the Menth coding communication protocol, and the components for each function Central processing unit 400 for controlling the; A power supply unit 300 employing an SMPS type power supply circuit for supplying a form required for each function as a power supplied from an automobile; An acoustic module 500 for processing and outputting an acoustic signal with a function selected according to the control signal of the central processing unit 400; Car audio remote control system comprising a speaker (601) for outputting the sound output from the sound module 500 into the vehicle. The method of claim 1, wherein the remote control transmitter 100 A key input unit 101 for inputting a user's command to the MCU 102; A high frequency control unit 108 for extending the life of the battery by cutting off the power of a part where the need for driving is not required in the MCU 102 to extend the life of the battery; A carrier generator 104 for generating a reference signal for synthesizing 16-bit transmission data of the MCU 102 for transmission to a microwave high frequency signal; A data modulation shaping unit (109) for performing Menth coding of a sigma modulation scheme of a communication protocol by using the reference signal generated by the carrier generating unit 104; A data modulator 105 for shaping data to implement high quality modulation efficiency; A microwave amplifying unit 106 and a transmitting unit 107 capable of transmitting a weak radio signal modulated to microwaves; A function display unit 103 for displaying the respective functions and the progress status; MCU 102 which controls generation of transmission data and transmission unit 107 by generation of quantization (16 bit) codes for various functions, and controls each function and progress state to be displayed on the function display unit 103; Car audio remote control system, characterized in that it comprises a power supply control unit (110) for supplying the operating power (111) to each part. The method of claim 2, wherein the carrier generator 104 Car audio remote control system, characterized in that for generating a reference signal with a frequency stability of 100ppm or less as a reference signal source for synthesized modulation. The method of claim 2, wherein the data modulator 105 Implementing high-quality modulation efficiency by processing low-speed, high-efficiency data of 1000bps of a 16-bit data frame from which the data of each function to be transmitted from the MCU 102 is realized, and transmits modulation to the microwave amplification unit 106. Car audio remote control system, characterized in that. The method of claim 2, wherein the key input unit 101 is 1) sound control function, 2) ultra low pass control function, 3) low pass control function by frequency, 4) high pass control function by frequency, 5) low pass 5 step control function, 6) instantaneous sound cutting control function Car remote control system, characterized in that for inputting to the MCU (102). The method of claim 1, wherein the remote control receiver 200 A receiver 201 and a high frequency amplifier 202 for receiving and amplifying microwave signals of high frequency; A mixing unit 203 for selecting the desired frequency by combining the received weak signal with the signal in the local oscillator; An amplification and suppression unit 204 for obtaining constant amplification of the signal separated in the synthesis and suppressing unnecessary parts for the amplification degree above; An amplifier 205 for detecting data; A data detection unit 206 for separating pure quantum components from a signal quality-enhanced by various parts of amplification and shaping; Car audio remote control system comprising a frequency generator (207) and a reference voltage setting unit (208) for generating a set frequency for the selection of the desired frequency. The method of claim 1, wherein the power supply unit 300 A power control unit 301 for performing a control function for supplying a remote power to another device; a PWM generator 302 applying a self-feedback call-feed circuit to increase smps power supply efficiency; a PWM converter 303 which induces the pwm power from the Troydal core to generate a power supply voltage required in each unit; A rectifier 304 for converting an induced voltage by PWM into a direct current; Car radio remote control system characterized in that it comprises a smoothing unit (305) for producing and supplying a high-quality direct current voltage to perform the high frequency linking of PWM by the capacitor and inductance. The method of claim 1, wherein the central processing unit 400 Car audio remote control system comprising a reference frequency generator (401). The method of claim 1, wherein the sound module 500 A low frequency amplifier 501 for amplifying an input low frequency input signal to compensate for a loss due to sound control; An acoustic controller 502 which performs attenuation characteristic of -80 dB in a 0 dB signal with 8 bits of data control; A low frequency control section 503 having a function of controlling low frequency components of 40HZ or less and having a 4BIT data execution function; A low-pass / high-pass filter 504 for controlling eight kinds of tones with 8BIT control with a function capable of arbitrarily selecting low and high frequencies; A low frequency emphasis unit 505 which performs five levels of control of the low frequency sound; The sound control unit 506 stops the instantaneous occurrence of POP noise, etc. generated when performing each function and suppresses the function when necessary. Car audio remote control system comprising a one-stage amplifier (507) and the sound output unit (508) for the final amplification / output of the controlled signal. The remote control system of a car audio system according to claim 1, wherein the output of the sound module (500) is output to the speaker (601) via a car audio system (600). The method of claim 1, wherein the remote control transmitter (100) is a car audio remote control system, characterized in that the non-directional RF. The remote control system of a car audio system according to claim 1, wherein the MCU (101) of the remote control transmitter (100) has a password setting function through a key input unit (102).