KR200186674Y1 - Voice recordable hands free apparatus for vehicle - Google Patents

Abstract

The present invention relates to a recordable vehicle hands-free device, and in particular, a housing, an audio jack installed in the housing and connected to an earphone jack of a portable communication terminal, a microphone installed in the housing, a speaker installed in the housing, a call, recording and A key input unit including play keys, an audio input unit for connecting a voice signal picked up from the microphone to a first terminal of the earphone jack, and a voice signal applied from a mobile phone to a second terminal of the earphone jack to input to the speaker An audio output unit, a semiconductor memory for storing voice data, and a call control signal to the first terminal in response to a key input through the key input unit, and applied to the first and second terminals in a recording mode. Sampling the audio signal and storing the digitally converted audio data in the semiconductor memory The control unit may include a control unit configured to read voice data stored in the semiconductor memory and to output voice through the speaker. Therefore, it is possible to simply record and play the contents of the call during the mobile phone call.

Description

Recordable car hands-free device {VOICE RECORDABLE HANDS FREE APPARATUS FOR VEHICLE}

The present invention relates to a vehicle recording hands-free device, and more particularly, to a hands-free device connected to a mobile phone mounted on a vehicle and a mobile phone earphone jack and capable of recording and reproducing the recorded content during a mobile phone handsfree call.

As mobile phones become more common, the number of traffic accidents caused by the use of mobile phones while driving is increasing. That is, when the call sounds of the mobile phone while driving, the driver's gaze is blurred by the operation and the thought to take out or pick up the mobile phone to receive the mobile phone. In addition, since the keypad is made very small because it is made small to be easy to carry, the key must be visually checked for key operation. In addition, when a call is driven with one hand and cares for the call, the driver's field of view is fixed or narrowed, thereby increasing the risk of a traffic accident. Therefore, in recent years, voices for restricting the use of mobile phones while driving are being raised.

Therefore, in recent years, various hands-free devices for vehicles have been developed.

Conventional vehicle hands-free devices range from simple using a microphone to a combination with a charging device, a vehicle with an audio system, and the like.

In the microphone method, the driver attaches the microphone to the earphone jack of the mobile phone while the mobile phone is mounted on the cradle.

The audio system of the vehicle is connected to the audio system, but the audio can be heard through the audio of the vehicle.

In addition, the charger and the combined method is typically connected to the hands-free device through the cap code of the mobile phone, there is a problem that the cost of the internal circuit configuration of the hands-free device is complicated.

An object of the present invention is to provide a recordable vehicle hands-free device that can be connected through the earphone jack of the mobile phone and to record the call using the semiconductor memory to solve the problems of the prior art.

1 is a view showing an installation state of a recordable vehicle hands-free device according to the present invention.

2 is a view showing the circuit configuration of a recordable vehicle hands-free device according to the present invention.

3 is a flowchart for explaining the operating state of FIG.

<Explanation of symbols for main parts of the drawings>

100: instrument panel 200: mobile phone holder

300: cell phone 400: vehicle recording hands-free device

410: microphone 412: audio input unit

414: speaker 416: audio output

418: audio jack 420: control unit

422: call switch 424: recording switch

426: playback switch 428: flash memory

430: power unit 432: power jack

440: audio connection code 500: cigar jack connection code

In order to achieve the above object of the present invention, the device of the present invention is installed in the housing, the audio jack is connected to the earphone jack of the portable communication terminal, the microphone installed in the housing, the speaker installed in the housing, calls, A key input unit including recording and playback keys, an audio input unit for connecting a voice signal picked up from the microphone to a first terminal of the earphone jack, and a voice signal applied from a mobile phone to a second terminal of the earphone jack; An audio output unit provided to a speaker, a semiconductor memory for storing voice data, and a call control signal supplied to the first terminal in response to a key input through a key input unit, and in the recording mode, the first and second terminals Sampling the audio signal applied to the digital memory and storing the digitally converted audio data in the semiconductor memory. And a controller configured to control the audio data stored in the semiconductor memory to be output through the speaker.

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

1 shows an installation state of a recordable vehicle hands-free device according to the present invention, Figure 2 shows a circuit configuration of a recordable vehicle hands-free device according to the present invention.

As shown, the recordable vehicle hands-free device 400 of the present invention is installed in the instrument panel 100 of the vehicle. The mobile phone 300 is mounted on the cradle 200. The hands free device 400 is electrically connected to the earphone jack of the mobile phone 300 through the audio connection cord 440. Normal audio plugs are connected to both ends of the audio connection cord 440, respectively. The audio plug includes three terminals of a tip terminal, a ring terminal, and a sleeve terminal.

On the front of the housing of the hands-free device 400, a microphone 410, a speaker 414, an LCD panel 434, a call key 422, a recording key 424, a play key 426, and an erase key 427 are selected. A key 429 or the like is provided. The keypad of these keys is preferably formed to be large enough to be easy for the operator to operate. It may include a search key, an up / down key, etc. for searching the recorded content. The hands free device 400 includes a power jack 432 and the power jack 432 is connected to the cigar jack of the vehicle through the cigar jack connection cord 500 to receive power from the battery of the vehicle. In addition, the hands free device 400 is connected to the ear microphone 480.

Each operating circuit is configured in the housing. The microphone 410 is connected to the ring terminal R of the audio jack 418 through the audio input unit 412, the switching means 436. The audio input unit 412 includes a filter circuit for filtering out only a human voice signal to remove noise and an amplifier circuit for amplifying the voice signal.

The speaker 414 is connected to the tip terminal T of the audio jack 418 through the audio output unit 416 and the switching means 436. The audio output unit 416 amplifies the voice signal provided from the mobile phone to drive the speaker 414. The audio output unit 416 may adjust the volume according to the noise level in the vehicle.

Since the audio input unit 412 and the audio output unit 416 are operated by receiving an operating voltage from the power supply unit 430, the audio input unit 412 and the audio output unit 416 are enabled or disabled by supplying power from the power supply unit 430. Therefore, it is in the disabled state when the call is waiting and is enabled in the call mode.

The semiconductor memory 428 is composed of nonvolatile memory, such as approximately 8M, 16M, 32M or 64M flash memory. Accordingly, the semiconductor memory 428 can record voice data for several hours according to a sampling frequency or a data compression algorithm.

The power supply unit 430 inputs 12V of the vehicle battery through the power jack 432 to generate an operating voltage VCC of 5V. The power supply unit 430 is controlled by the control unit 420 and is enabled to output an operating voltage.

The LCD panel 434 normally displays time, displays recording status, playback status, and the like, and displays recording contents.

The switching means 436 selectively connects the microphone jack 434 and the audio input / output units 412 and 414 in response to a switching control signal of the controller 420 generated in response to a key input of the selection key 429. . That is, when the ear microphone is selected, the ear microphone jack 434 is connected to the audio jack 418 so that the user can make a confidential call through the ear microphone 480. When the speaker is selected, the audio input / output units 412 and 414 are selected to be connected to the audio jack 418 to enable a call through the speaker 410 and the microphone 414. The switching means 436 selects the audio input / output unit in the off mode and then selects the microphone jack in the on mode.

The control unit 420 is composed of a one-chip microcomputer and is connected to the call switch 422, the recording switch 424, the playback switch 426, the erase switch 427, and the selection switch 429. The control unit 420 inputs the voice signals of the ring terminal and the tip terminal to sample at sampling frequencies of 2K, 4K, 8K, 16K, 32K, and the like, and compresses the sampled voice signals in the flash memory 428. In addition, the controller 420 reads and decodes the voice data stored in the flash memory 428, converts the decoded voice signal into an analog voice signal, and provides the same to the audio output unit 416. Further, a switching control signal for controlling the switching means is generated in response to the key input of the selection switch.

The operation of the present invention configured as described above will be described with reference to FIG. 3.

First, the control unit 420 checks the power-on state (600). When the power is on, the call key input is checked (602) or the record key input is checked (616), or the play key input is checked (628).

If there is a call key input in step 602, the first flag F1 is checked (604). If the flag value is 0, the flag value is set to 1 (606) and a call control signal is generated (608) to the ring terminal (R). to provide. The call control signal provided to the ring terminal R is transmitted to the mobile phone, and the mobile phone is switched to the call state. In other words, when the user rings the ringtone of the mobile phone, the user presses the call key to switch the mode to the call state. Subsequently, the controller 420 enables the power supply unit 430 to supply power to the audio input unit 412 and the audio output unit 416 to enable input / output of a voice signal. If the flag value is not 0 in step 604, since the previous mode is the call mode, the flag value is set to 0 (612) and the audio input unit 412 and the audio output unit 416 are disabled (614) to switch to the call standby mode.

In the call mode, in step 616, if there is a recording key input, the second flag F2 is checked (618). If the flag value is 0, the flag value is set to 1 (620) and recording is started (622). That is, the contents of the call are stored in the flash memory 428 (622). If the flag value is not 0 in step 618, since the previous mode is the recording mode, the flag value is set to 0 (624) and the recording operation is terminated (626).

In the call mode, if there is a play key input in step 628, the third flag F3 is checked (630). If the flag value is 0, the flag value is 1 (632) and playback is started (634). That is, the contents of the call stored in the flash memory 428 are reproduced. If the flag value is not 0 in step 630, since the previous mode is the playback mode, the flag value is set to 0 (636) and the playback operation is terminated (638).

If there is no play key input in step 628, the erase key input is checked (640). If there is an erase key input, the controller 420 deletes the corresponding recording stored in the flash memory 428 (642).

If there is no erase key input in step 640, the select key input is checked (644). If there is a selection key input, it is checked whether the flag value F4 is 0 (646). If the flag value is 0, the flag value is set to 1 (648), the switching means 436 is switched, and then the microphone jack 434 is selected (650). Accordingly, the user can make a confidential call through the ear microphone 480 connected to the ear microphone jack 434. If the flag value is 1 in step 646, the flag value is set to 0 (652) and the switching means 436 are switched to select the audio input / output units 412 and 416 to make a call through the microphone 410 and the speaker 414. (654).

As described above, in the present invention, it is connected to the earphone jack of the mobile phone, so that the contents of the call can be input or output through the microphone and the speaker, and the contents of the call can be recorded or reproduced through the semiconductor memory. Not only can you use your phone, but you can also record important calls.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the present invention described in the claims below. I can understand that you can.

Claims (3)

housing; An audio jack installed in the housing and connected to the earphone jack of the portable communication terminal; A microphone installed in the housing; A speaker installed in the housing; A key input unit including call, recording and playback keys; An audio input unit for connecting a voice signal picked up from the microphone to a first terminal of the earphone jack; An audio output unit configured to input a voice signal applied from a mobile phone to a second terminal of the earphone jack and provide the same to the speaker; And A semiconductor memory for storing voice data; In response to a key input through the key input unit, a call control signal is supplied to the first terminal, and in the recording mode, voice signals applied to the first and second terminals are sampled and digitally converted voice data is transferred to the semiconductor memory. And a control unit configured to control the audio data stored in the semiconductor memory to be read out through the speaker in the reproducing mode. 2. The recordable vehicle hands-free device according to claim 1, wherein the apparatus further comprises a power jack connected to a vehicle cigarette light jack and a power supply unit connected to the power jack to generate a power voltage. The recordable vehicle hands-free device according to claim 1, wherein the semiconductor memory is a flash memory.