KR970002263B1 - Driver contacting device and method for car audio - Google Patents

Abstract

Apparatus for notifying a connection place of a driver memorizes a connection place of the driver when temporarily parking a vehicle, and reproduces the connection place via an external speaker. The apparatus includes: a large scale integrated circuit(30) for a reproduction of a voice recording; a microphone input part(31) for transmitting a voice signal via a buffer and amplifier(32); a voice input/output part(40)having amplifier(33) and external speaker(34), and being connected to the large scale integrated circuit(30); an external key(SP) mounted to an external part of the vehicle, for transmitting a signal to a microcomputer(20); and a backup part(50) for a voice recording when a power-off of the car audio occurs or an ignition key is not used. A voice recording key(RE) is mounted to the key matrix(19), thereby a voice recording and voice reproduction are possible.

Description

Driver contact notification device and method using car audio

1 is a block diagram of a driver contact notification device using the present invention audio.

2 is a circuit diagram illustrating a backup unit in FIG. 1.

3 is a flowchart of the operation of the present invention.

* Explanation of symbols for main parts of the drawings

1: front 12: low-pass filter

13: intermediate frequency amplifier 14: Dolby unit

15: volume / sound quality control unit 6, 33: amplification unit

17 liquid crystal display element driver 18 liquid crystal display element display unit

19: key matrix unit 20: micom for car audio

30: large-scale integrated circuit for voice recording reproduction 31: microphone input unit

32: buffer and amplifier 40: voice input and output

50: backup unit 51: power stabilization circuit

SPK ₁ : Internal Speaker SPK ₂ : External Speaker

SP: Foreign Key ANT: Antenna

TR1, 2: transistor

The present invention relates to a driver contact notification apparatus using a car audio and a method for reproducing the contact information that can be contacted to the driver during the temporary parking of the car using the car audio to the external speaker by the operation of the external key.

In general, park your car and write down your contact information on the message board. However, leaving contact information using the message board is not a hassle. And if you park your car for a short time without leaving a contact in the parking spot because of a hurry, the driver will not know whether it is towed or not.

The present invention is characterized in that it is possible to listen to the contents stored in the external speaker by the operation of the key installed in the external memory to the driver's contact in the car audio.

In other words, the front end receives signals of various frequency bands through the antenna and inputs them to the car audio microcomputer that has the phase synchronization loop function. The low-end filter and the front end are repeatedly used to fit the frequency band selected by the user. If the frequency band is corrected, the front end is used to amplify the intermediate frequency from the middle frequency amplification unit to the middle frequency, noise canceling and multiplexing, and remove the noise from the Dolby unit using the noise reduction method while inputting the signal selected by the user through the key matrix unit. Under the control of a car audio micom, the volume / sound quality control unit controls the balance of the deity where the noise is removed, the speaker state, and the volume and treble / bass level, and outputs them through the amplifier and the speaker. In the liquid crystal display element display unit driven by the above state In the audio to show, a large-scale integrated circuit for voice recording and playback to interface with the car audio microcomputer to record and replay the voice; A microphone input unit for transmitting a voice signal through a buffer and an amplifying unit so that voice can be recorded by the large-scale integrated circuit for voice recording and reproducing, and an amplifying unit for outputting the voice to the outside to listen to the recorded voice from outside; A voice input / output unit configured as an external speaker and connected to the microcomputer for voice recording and reproduction; An external key installed on the outside of the vehicle and used as a microcomputer for car audio to output the voice recorded by the external speaker; It is equipped with a backup unit that switches the current of the backup battery according to the output signal of the car audio with the power and ignition device so that the voice can be recorded even when the car audio is turned off or the car ignition key is not used. Enable recording and playback of voice.

Then, a voice recorder is installed in a key matrix that outputs key information under the control of the car audio microcomputer.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a driver contact notification device using the present invention car audio.

That is, the front end 11 receives signals of various frequency bands through the antenna ANT and amplifies them to a car audio micom 20 having a function of phase locked loop. Filter through the low pass filter (LPF) 12 and front end 11 to match the frequency band selected by the user. Frequency amplification section 13 amplifies to intermediate frequency (IF), noise canceling and multiplexing, DOLBY, speaker phase (FAD), volume (VOL) and treble / bass ( In the liquid crystal display (LCD) display unit 18 which adjusts TRE / BASS and outputs through the amplifier 16 and the speaker SPK1 and is driven by the liquid crystal display (LCD) driver 17, the volume / In the car audio to show the state of the sound quality control unit 15, the car audio A large scale integrated circuit (Large Scale Integration: LSI) 30 for interfacing to the microcomputer 20 for recording and reproducing voice; A microphone input unit 31 which transmits a voice signal through a buffer and amplifying unit 32 so that voice can be recorded by the large-scale integrated circuit (LSI) 30 for voice recording and reproduction, and the recorded voice from outside A voice input / output unit (40) comprising an amplification unit (33) and an external speaker (34) for outputting voice to the outside to be connected to the large-scale integrated circuit (LSI) 30 for voice recording and reproduction; An external key (SP) installed outside the vehicle and sending a signal to the microcomputer 20 for car audio so that the recorded voice is output to the external speaker 34; The power of the back-up battery and the ignition device are used to record the audio even when the power of the car audio is turned off or the car's ignition key is not used. Equipped with a backup unit 50 for switching in accordance with the output signal of the (20) to enable recording and playback of voice.

Then, the voice recording key RE is installed in the key matrix 19 for outputting the key information under the control of the car audio micom 20.

In addition, the microcomputer 20 for car audio and a large-scale integrated circuit (LSI) 30 for reproducing voice may be installed as a single chip.

When the volume of the voice recording and playback de-scale integrated circuit (LSI) 30 interfaced with the microcomputer 20 for audio is insufficient, an electrically erasable and recordable product (EEPROM) can be expanded. Can be used.

FIG. 2 shows a circuit diagram of the backup unit 50 in FIG.

When you want to record the voice without using the car's ignition key (Acc is off), the backup battery of the car is output by the signal output through the system on terminal of the microcomputer 20 for car audio. Transistor TR1 for switching the current of the back-up to the current Acc of the ignition key of the vehicle, and the microcomputer 20 for audio when the audio is to be recorded while the power of the car audio is turned off. Transistor TR2 for switching the current of the backup battery of the car through the power stabilization circuit 51 to the power of the car audio by the signal output through the power on terminal Is done.

3 is a flowchart showing the operation of the present invention.

First, when recording the voice, it is judged whether there is an input signal by the voice recording key RE provided in the key matrix 19 (step S1), and if not, the car audio operation is continued. If it is not turned on by checking whether the power is on, the signal of the backup battery (back-up) is output by outputting a signal from the microcomputer 20 for car audio to the backup unit 50 through the system on terminal. The switch is switched to the ignition key of the vehicle (step S2). When the power state of the ignition key is on or the system on terminal is output and current flows through the ignition key in step S2, it is determined whether the power of the car audio is on. The audio microcomputer 20 outputs a signal to the backup unit 50 through a power on terminal to switch the current of the backup battery to the power current of the car audio (step S3). ). In step S3, if the power of the car audio is on or the power on terminal is output and current flows through the car audio, it is determined whether there is an input of the audio signal, and if there is an input of the audio signal, recording is performed. If there is no input, it waits for 5 seconds (step S4) and continues the operation of the car audio (step S5). When the user wants to listen to the recorded content from the outside, first, if it is determined whether there is an input of the external key SP, the recorded voice signal is output twice (step P1).

In the above operation, when the voice signal is recorded or there is no input of the voice signal, a step of waiting for 5 seconds (S5) and a step of outputting the voice signal through the external speaker SPK2 (P1) are muted in the microcomputer 20 for car audio. Outputs the (Mute) signal so that audio is not output to the internal speaker SPK1 of the car audio.

As described above, the present invention interfaces a car audio microcomputer with a large integrated circuit for voice recording and playback, and enables the function of recording and playback of trouble so that the driver's contact information can be known through keys and speakers installed outside. Eliminates the hassle of contact memos and the disadvantages of arbitrary towing when parking.

Claims (6)

The front end 11 receives signals of various frequency bands through the antenna ANT and inputs them to the car audio micom 20 having a built-in phase locked loop function. The filter is repeatedly filtered through the low pass filter 12 and the front end 11 to match the selected frequency band. If the frequency band is correct, the intermediate amplification unit is provided through the front end 11. Amplifying to an intermediate frequency (IF) at 13, noise canceling and multiplexing, the DOLBY unit 14 removes the noise in a noise-reducing manner, while the user enters the key matrix unit 19. By controlling the microcomputer 20 for inputting a signal selected through the audio / audio control unit 15, the volume / sound quality control unit 15 controls the balance (BAL), the speaker state (FAD), and the volume (VOL) of the signal from which the noise is removed. And amplification by adjusting treble / bass (TRE / BASS) The liquid crystal display (LCD) display unit 18, which is output through the 16 and the speaker SPK1 and driven by the LCD driver 17, controls the state of the volume / sound quality control unit 15. In the car audio to be displayed, a large-scale integrated circuit (LSI) 30 for voice recording and reproduction, which is interfaced to the car audio microcomputer 20 to record and reproduce voices; A microphone input unit 31 which transmits a voice signal through a buffer and amplifying unit 32 so that voice can be recorded by the large-scale integrated circuit (LSI) 30 for voice recording and reproduction, and the recorded voice from outside A voice input / output unit 40 which is composed of an amplifier 33 and an external speaker 34 for outputting voice to the outside to be connected to the large-scale integrated circuit (LSI) 30 for voice recording reproduction; An external key (SP) installed outside the vehicle and sending a signal to the microcomputer 20 for car audio so that the recorded voice is output to the external speaker 34; The backup battery current can be used as a power and ignition device for powering and ignition so that audio can be recorded even when the power of the car audio is turned off or the ignition key of the car is not used. And a backup unit 50 for switching in accordance with the output signal of 20), and the audio recording key (RE) is installed in the key matrix 19 to enable recording and playback of voice. Driver contact notification device used. The method of claim 1, wherein the backup unit 50 is the ignition of the vehicle back-up (Back-up) of the vehicle by the signal output through the system on (system on) terminal of the car audio microcomputer (20) The backup battery of the vehicle through the power stabilization circuit 51 by a signal output through the transistor TR1 for switching to the current Acc of the key and the power on terminal of the microcomputer 20 for car audio ( Driver contact notification device using car audio, characterized in that consisting of a transistor (TR2) for switching the current of the back-up to the power of the car audio. The apparatus of claim 1, wherein the car audio microcomputer (20) and the voice recording reproduction large scale integrated circuit (LSI) 30 are installed in one chip. The method of claim 1, wherein when the volume of the LSI 30 for voice recording / reproducing interfaced to the car audio microcomputer 20 is insufficient, an electrically erasable or programmable ROM (Electrically Erasable and Programmable ROM): Driver contact notification using car audio installed by extending EEPROM). Determining whether there is an input signal by the voice recording key RE provided in the key matrix 19 at the time of recording the voice (S1); Check whether the power state of the car ignition key is on, or if it is not on, output the signal from the microcomputer 20 for car audio to the backup unit 50 through the system on terminal. Switching the current of i) to an ignition key of the vehicle (S2); When the power state of the ignition key is on or the system on terminal is output and current flows through the ignition key, it is determined whether the power of the car audio is on. Step S3 of outputting a signal to the backup unit 50 through a power supply on terminal to switch the current of the backup battery (Back-up) to the power current of the car audio (S3); When the power of car audio is on or the power on terminal is output and current flows through the car audio, it is judged whether there is an audio signal input. If there is an audio signal input, it is recorded. It waits for a second and then proceeds to (S4 and S5) to continue the operation of the car audio, and if you want to listen to the recording from the outside, first determine whether there is an input of the external key (SP) Driver contact notification method using a car audio, characterized in that the step of outputting twice (P1) in sequence. The method of claim 5, wherein the step of recording the voice signal or waiting for 5 seconds when there is no input of the voice signal (S5) and the step of outputting the voice signal through the external speaker (SPK2) (P1) for the car audio microcomputer ( 20) the driver's contact notification method using car audio, characterized in that by outputting a mute (Mute) signal so that the voice is not output to the internal speaker (SPK1) of the car audio.