JP2019061624A - Drive recorder system and file generation method using drive recorder system - Google Patents

Abstract

To provide a drive recorder system which surely prevents a conversation performed using a phone from being recorded without complicated operations by a passenger, and a file generation method using the drive recorder system.SOLUTION: A drive recorder 3 of a drive recorder system 1 includes: a file generation unit 21 that inputs a video signal from a camera 8, inputs a voice signal from a drive recorder microphone 9, generates a file including video data and voice data, and stores the file in a storage unit 30; and a voice stop unit 23 that stops the output of the voice signal corresponding to a voice of a conversation performed using at least a phone to the file generation unit 21 from when a start detection signal indicating the start of use of a mobile phone 4 is input to when an end detection signal indicating the end of use of the mobile phone 4 is input from an in-vehicle device 2. While the mobile phone 4 is being used by a passenger, the conversation performed using the phone is prohibited from being recorded.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drive recorder system and a file generation method using the drive recorder system, and more particularly, a drive recorder system that generates and stores a file in which audio data is recorded together with video data, and a file generation method using the drive recorder system. Suitable for use in

  2. Description of the Related Art In recent years, drive recorders for recording video captured by an on-vehicle camera and audio collected by an on-vehicle microphone while the vehicle is traveling have become widespread. One of the usage purposes of the drive recorder is to store a file in which the video and audio before and after the accident are recorded, and later, the file can be used for investigating where the accident is responsible and for investigating the cause of the accident It is to be done. In order to achieve this usage purpose, as a drive recorder system, while the vehicle is moving, shooting by a camera and sound collection by a microphone are always performed, and a predetermined storage area may be fixed for a predetermined time (different from file to file) ) Files from which video and audio have been recorded are stored at any time, and when the capacity of the predetermined storage area becomes full, newly generated files are overwritten in order from the old file, while accident In the case where the occurrence of a failure occurs, a method is widely adopted which detects that by a predetermined means and prohibits overwriting of a file corresponding to a time zone before and after the timing at which the accident occurred. According to this method, it is possible to prevent deletion of files in which video and audio before and after the accident are recorded while efficiently using the storage area.

  In the above method, while the vehicle is traveling, sound recording is always performed. Therefore, when the microphone for sound collection is provided at a position where it can pick up the voice uttered by the passenger, the voice uttered by the passenger is at least temporarily recorded in the drive recorder. Become. Here, depending on the area, there are areas where it is prohibited to record a conversation conducted using a telephone when there is no consent of the caller due to the regulation of the law etc. When drive recorders are used in the area, regulatory compliance is a concern when the passenger uses the phone.

  Patent Document 1 describes a technique for limiting the recording of a conversation performed using a telephone. That is, the mobile phone terminal according to Patent Document 1 regulates the recording of the conversation performed using the telephone in the area where the calling party's telephone is used based on the area identification code included in the information received at the time of the incoming call. If there is a restriction, the processing corresponding to the restriction content is performed, including the prohibition of the recording of the conversation to the memory of its own. According to this patent document 1, when the calling party's telephone is used in an area where recording of conversations made using the telephone is prohibited, the call is made to the memory of the called telephone using the telephone. It is possible to prevent a recorded conversation from being recorded.

  Further, Patent Document 2 describes a technique for limiting the recording of a conversation performed by a user using a headset. That is, when recording a conversation, the headset according to Patent Document 2 determines whether or not the condition set in advance as the condition in the case where the recording of the conversation is permitted, and only when the condition is satisfied Perform conversation recordings. According to this patent document 2, it is possible to prevent the conversation from being recorded by the headset under a situation where the recording of the conversation is not permitted.

JP 2001-197194 A JP, 2005-260944, A

  In Patent Document 1 described above, when the calling party's telephone is used in an area where the recording of a conversation performed using the telephone is prohibited, the calling destination telephone's memory is used by using the telephone. In such a case, it is impossible to prevent the conversation from being recorded by the drive recorder independent of the telephone. Similarly, in Patent Document 2 described above, although it is possible to prevent the headset from recording the conversation under a situation where the recording of the conversation is not permitted, the conversation is recorded by the drive recorder independent of the headset. It can not be avoided.

  Here, the passenger himself operates the drive recorder to turn off the recording function when using the telephone in order to prevent the conversation being made by the passenger of the vehicle using the telephone from being recorded by the drive recorder. When the use of the telephone is over, it is possible to turn on the function. However, this work is complicated because it needs to be performed each time the phone is used, and the driver is driving the vehicle when using the phone using, for example, a hands-free system. There are times when this can not be done. If this task can not be performed, a situation may occur in which the telephone can not be answered despite the incoming call, which may be disadvantageous to the driver.

  The present invention has been made to solve such a problem, and ensures that when a passenger uses a telephone without using complicated operations by the passenger, the line is used using the telephone. The purpose is to prevent recorded conversations from being recorded.

  In order to solve the problems described above, according to the present invention, in a drive recorder system provided with a drive recorder provided in a vehicle and a control device capable of communicating with the drive recorder, the control device is used for the use of a telephone existing in the vehicle. Detect start and end. Further, the drive recorder inputs a video signal from a camera provided in the vehicle, and an audio signal from a microphone provided in the vehicle, and a file including video data and audio data based on the video signal and the audio signal. While generating and storing it in the storage unit, at least the telephone is used among the voices picked up by the microphone from the detection of the start of the use of the telephone by the control device to the detection of the end of the use of the telephone And an audio signal corresponding to the speech of the conversation that has been conducted is not output to the means for generating the file.

  According to the present invention configured as described above, after the control device detects the start and end of the use of the telephone existing in the vehicle, the control unit automatically performs the telephone call from the start to the end of the use of the telephone. Output to the means for generating the file of the audio signal corresponding to the speech of the conversation conducted using the program is stopped, thereby preventing the file in which the speech of the conversation is recorded from being stored in the drive recorder Be done. This makes it possible to ensure that conversations made using the telephone are not recorded when the passenger uses the telephone without complicated operations by the passenger.

It is a block diagram showing an example of functional composition of a drive recorder system concerning a 1st embodiment of the present invention. It is a flowchart which shows the operation example of the vehicle-mounted apparatus of the drive recorder system which concerns on 1st Embodiment of this invention, and a drive recorder. It is a block diagram showing an example of functional composition of a drive recorder system concerning a modification of a 2nd embodiment of the present invention. It is a block diagram showing an example of functional composition of a drive recorder system concerning a 3rd embodiment of the present invention.

First Embodiment
Hereinafter, a first embodiment of the present invention will be described based on the drawings. FIG. 1 is a block diagram showing an example of a functional configuration of a drive recorder system 1 according to the present embodiment. The drive recorder system 1 is a system provided in a vehicle, and as shown in FIG. 1, includes an on-vehicle device 2 (corresponding to a “control device” in the claims) and a drive recorder 3.

  The in-vehicle apparatus 2 is an apparatus provided in a dashboard of a vehicle, a center console, etc., and is an in-vehicle apparatus provided for collecting a speech of a passenger of the vehicle and a speaker 5 for emitting sound in the vehicle. It is connected to a microphone 6 and a touch panel 7 that displays an image and receives a touch operation of a passenger.

  As shown in FIG. 1, the in-vehicle apparatus 2 includes a first communication unit 10, a second communication unit 11, a handsfree call unit 12, and a use state detection unit 13 as functional components. Each functional block 10 to 13 can be configured by any of hardware, DSP (Digital Signal Processor), and software. For example, when configured by software, each of the functional blocks 10 to 13 actually comprises a CPU, a RAM, a ROM and the like of a computer, and a program stored in a recording medium such as a RAM, a ROM, a hard disk or a semiconductor memory Is realized by operating. The same applies to other functional blocks described later.

  The first communication unit 10 establishes a communication link with the mobile phone 4 brought into the vehicle by the passenger according to Bluetooth (registered trademark), and wirelessly communicates with the mobile phone 4. More specifically, pairing is properly performed at a predetermined timing between the mobile phone 4 and the in-vehicle device 2, and when the first communication unit 10 is located in a range where the mobile phone 4 can communicate. Then, it detects that, establishes a communication link with the mobile phone 4 according to the procedure of Bluetooth, and establishes a state in which wireless communication according to Bluetooth can be performed between the mobile phone 4 and the on-vehicle device 2. A dedicated application (hereinafter referred to as a “dedicated application”) is installed in advance on the mobile phone 4. The functions of the dedicated application will be described later. The communication standard used for communication between the mobile phone 4 and the in-vehicle device 2 is not limited to Bluetooth, and any communication standard may be used. Wired communication may be used.

  The second communication unit 11 communicates with the drive recorder 3 in accordance with a predetermined communication standard. The predetermined communication standard may be any standard, and may be a standard related to wired communication or a standard related to wireless communication. The predetermined communication standard is, for example, USB, Ethernet (registered trademark), Bluetooth, Wi-Fi (registered trademark).

  The hands-free calling unit 12 realizes hands-free calling by a passenger. Since hands-free calling is performed using existing technology, the processing of the hands-free calling unit 12 will be briefly described below. The hands-free calling unit 12 communicates with a dedicated application installed in the mobile phone 4 and receives a receiving voice from the mobile phone 4 when a communication line is connected between the mobile phone 4 and another phone. The speaker 5 emits the sound into the car by the speaker 5, and the transmission voice generated by the passenger is collected by the in-vehicle apparatus microphone 6 and transmitted to the mobile phone 4, thereby realizing a hands-free call. In the present embodiment, the instruction to respond to the call to the mobile phone 4 and the instruction to end the connection of the communication line are performed by the touch operation on the user interface displayed on the touch panel 7 by the hands-free calling unit 12. The in-vehicle apparatus 2 may be provided with a voice recognition function or a gesture recognition function, and the instruction may be given by voice or gesture.

  The use state detection unit 13 detects the start and end of use of the mobile phone 4. Hereinafter, the process of the use state detection unit 13 will be described in detail. The use state detection unit 13 monitors the process of the handsfree call unit 12 and determines whether or not connection of a communication line has been started between the mobile phone 4 and another phone. When the connection of the communication line is started, there is a call to the mobile phone 4, and the passenger responds to it, or the passenger calls another phone by the mobile phone 4, and the called party calls it It can be considered that the use of the mobile phone 4 has been started.

  After the connection of the communication line is started, the use state detection unit 13 monitors the process of the hands-free calling unit 12 and determines whether the connection of the communication line between the mobile phone 4 and the other telephone is ended. Determine When the connection of the communication line is ended, it can be considered that the passenger or the other party in the call is in the state of hanging up and the use of the mobile phone 4 is ended.

  When the use state detection unit 13 detects that the use of the mobile phone 4 has been started, the use state detection unit 13 transmits a start detection signal to the drive recorder 3. When the use state detection unit 13 detects that the use of the mobile phone 4 has ended, the use state detection unit 13 transmits an end detection signal to the drive recorder 3. A period from when the use state detection unit 13 detects that the use of the mobile phone 4 is started to when it detects that the use is ended (= after the use state detection unit 13 transmits the start detection signal , During the period until the end detection signal is sent), the passenger may have a conversation using the mobile phone 4. Conversely, during the period other than this period, the mobile phone 4 may be used by the passenger. The conversation used is not conducted.

  The hands-free calling unit 12 for controlling hands-free calling by the passenger outputs a predetermined signal to the using condition detecting unit 13 at the start and end of the connection of the communication line, and the using condition detecting unit 13 may be configured to detect that the use of the mobile phone 4 has been started and that the use of the mobile phone 4 has ended, based on a signal input from the hands-free calling unit 12.

  As shown in FIG. 1, the drive recorder 3 is connected to a camera 8 and a microphone 9 for the drive recorder (corresponding to “a microphone” in the claims). The camera 8 is an imaging device for imaging the front of the vehicle, and is provided, for example, on the top of the front windshield. The camera 8 continuously performs shooting while the vehicle is traveling, and outputs a video signal to the drive recorder 3. The camera 8 is not limited to an imaging device for imaging the front of the vehicle, and may include an imaging device for imaging the side or the rear of the vehicle. Further, the drive recorder microphone 9 is a sound collection device for collecting sound. The drive recorder microphone 9 according to the present embodiment is provided at a position where the voice of the utterance is collected when the passenger of the vehicle speaks in the car. The drive recorder microphone 9 continuously picks up sound while the vehicle is traveling, and outputs a sound signal to the drive recorder 3.

  While the vehicle is traveling (in the present embodiment, while the engine switch is turned on), the drive recorder 3 records (records, records) an image captured by the camera 8 and an audio collected by the drive recorder microphone 9 ), And includes a communication unit 20, a file generation unit 21, an accident detection unit 22, and a voice stop unit 23 as functional components. The drive recorder 3 also includes a switch S and a storage unit 30.

  The communication unit 20 communicates with the in-vehicle device 2 in accordance with a predetermined communication standard.

  The storage unit 30 includes a storage medium such as a hard disk and a flash memory, and stores various data. In the storage unit 30, a storage area for storing a recording file to be described later (corresponding to a "file" in the claims) is secured.

  The file generation unit 21 receives a video signal from the camera 8 and an audio signal from the drive recorder microphone 9, generates a recording file including video data and audio data based on the video signal and the audio signal, and stores the file. It makes part 30 memorize. More specifically, the file generation unit 21 performs analog / digital conversion on the video signal and compresses the video signal using a predetermined video codec to generate video data of a predetermined data format. In parallel with this, the file generation unit 21 performs analog / digital conversion of the audio signal, and compresses the audio signal with a predetermined audio codec to generate audio data of a predetermined data format. In response to the generation of the video data and the audio data, the file generation unit 21 generates a moving image file of a predetermined container format (for example, MP4 or MPEG) in which the video data and the audio data are multiplexed as a recording file. .

  The file generation unit 21 generates a recording file at regular intervals. As a result, the file generation unit 21 generates a recording file in which the video taken by the camera 8 during a constant period and the sound collected by the drive recorder microphone 9 are recorded every constant period. The file generation unit 21 describes the date and time when the recording file was generated in the metadata of the recording file, and describes the overwrite prohibition flag (described later) in the off state.

  The file generation unit 21 cyclically stores the generated recording file in a predetermined storage area of the storage unit 30. That is, each time the file generation unit 21 newly generates a recording file, the file generation unit 21 stores the recording file in the predetermined storage area as needed. When the predetermined storage area becomes full, the file generation unit 21 overwrites and updates the oldest recording file among the recording files stored in the predetermined storage area with a new recording file. At that time, the file generation unit 21 refers to the overwrite overwrite flag (described later) of the metadata, prohibits overwriting the recording file whose flag is on, and maintains the state stored in the predetermined storage area. .

  The accident detection unit 22 detects that an accident has occurred. The drive recorder 3 is connected with various sensors and devices for detecting the occurrence of an accident, and the accident detection unit 22 appropriately detects an accident by the existing technology. In addition to the fact that the accident detection unit 22 detects an action, such as a collision, etc., not only an action such as a sudden start, a sudden brake, or a loud noise around the vehicle has actually occurred. Of course, events related to the accident may be included.

  When the accident detection unit 22 detects an accident, among the recording files already stored in the storage unit 30, the recordings generated in the predetermined period retroactively from the timing at which the accident occurred are stored in the storage unit 30. Turn on the overwrite protection flag for the file. Furthermore, when detecting an accident, the accident detection unit 22 turns on the overwrite inhibition flag for the storage file that is generated during a predetermined period after the timing at which the accident occurs and stored in the storage unit 30. As a result, the recording file in which the video and audio of the time zone before and after the timing of the accident is recorded is maintained in the storage unit 30 without being overwritten and updated.

  The voice stop unit 23 receives the start detection signal and the end detection signal from the use state detection unit 13 of the in-vehicle device 2 and receives the start detection signal until the end detection signal is received. Output of the audio signal to the file generation unit 21 is stopped. Hereinafter, the process of the voice stop unit 23 will be described in detail.

  Here, a switch S is provided on a signal line for outputting an audio signal from the drive recorder microphone 9 to the file generation unit 21. The switch S is a switch that switches on / off of an audio signal to the file generation unit 21. When the switch is on, it is set as "output", and when it is turned off, it is set as "not output". In FIG. 1, for convenience of description, the switch S is represented by a block existing on a line connecting the block of the camera 8 and the block of the file generation unit 21.

  As described above, the use state detection unit 13 transmits a start detection signal at the start of connection of a communication line between the mobile phone 4 and another telephone, and transmits an end detection signal at the end of connection. When the voice stop unit 23 receives the start detection signal, the voice stop unit 23 outputs an off signal to the switch S to turn off the switch S. Thus, the output of the audio signal from the drive recorder microphone 9 to the file generation unit 21 is stopped in response to the start of connection of the communication line between the mobile telephone 4 and another telephone. After receiving the start detection signal, when the end detection signal is received, the voice stop unit 23 outputs an on signal to the switch S, and turns on the switch S. Thus, in response to the termination of the connection of the communication line, the output of the audio signal from the drive recorder microphone 9 to the file generation unit 21 is started again.

  As a result of the above process being performed by the voice stop unit 23, the output of the voice signal from the drive recorder microphone 9 to the file generation unit 21 is performed while the communication line is connected between the mobile phone 4 and another phone. Is stopped. Therefore, the audio data in which the audio collected by the drive recorder microphone 9 during the period is recorded is not generated. This produces the following effects. That is, the period in which the communication line is connected between the mobile telephone 4 and another telephone is a period in which the passenger may talk using the mobile telephone 4. According to the present embodiment, during such a period, voice data in which voice collected by the drive recorder microphone 9 is not recorded is not generated, so the voice of the conversation conducted by the passenger using the mobile phone 4 is A recording file including the recorded audio data is not stored in the storage unit 30. Therefore, according to the present embodiment, when the drive recorder 3 is used in an area where there is a restriction in which it is prohibited to record a conversation made using a telephone without the permission of the caller, the mobile phone 4 is used. It is possible to prevent the recording of conversations made using it and to comply with the regulations. In addition, the prohibition of the recording of the conversation is automatically performed without the work of the passenger, which is convenient for the passenger.

  FIG. 2 is a flowchart showing an example of processing of the in-vehicle apparatus 2 and the drive recorder 3 according to the present embodiment. The flow chart FA of FIG. 2 shows the operation of the use state detection unit 13 of the in-vehicle apparatus 2, and the flow chart FB shows the operation of the voice stop unit 23 of the drive recorder 3. The process of the flowchart of FIG. 2 is continuously performed while the vehicle is traveling (in the present embodiment, while the engine switch is turned on).

  As shown in the flowchart FA of FIG. 2, the use state detection unit 13 monitors whether the use of the mobile phone 4 has been started (step SA1). When the use of the mobile phone 4 is started (step SA1: YES), the use state detection unit 13 transmits a start detection signal to the drive recorder 3 (step SA2). After transmitting the start detection signal, the use state detection unit 13 monitors whether the use of the mobile phone 4 has ended (step SA3).

  When the use of the mobile phone 4 is ended (Step SA3: YES), the use state detection unit 13 transmits an end detection signal to the drive recorder 3 (Step SA4). Next, the use state detection unit 13 determines whether or not the engine switch S is turned off (step SA5), and if it is not stopped (step SA5: NO), the processing procedure is returned to step SA1 and is stopped (Step SA5: YES), the process ends. In the flowchart FA, although it is configured to determine whether the engine switch S is turned off in step SA5 for the convenience of description, the use state detection unit 13 performs the processing of the flowchart FA. Continue to monitor whether the engine switch is turned off, and if it is turned off, end the processing.

  As shown in the flowchart FB of FIG. 2, the audio stopping unit 23 of the drive recorder 3 monitors whether or not the start detection signal has been received (step SB1). When the start detection signal is received (step SB1: YES), the voice stop unit 23 turns off the switch S (step SB2).

  Next, the voice stop unit 23 monitors whether an end detection signal has been received (step SB3). When the end detection signal is received (step SB3: YES), the voice stop unit 23 turns on the switch S (step SB4).

  As described above in detail, in the drive recorder system 1 according to the present embodiment, the in-vehicle device 2 detects the start and end of use of the mobile phone 4 which is a phone existing in the car. The drive recorder 3 also receives an image signal from the camera 8 provided in the vehicle, and an audio signal from the drive recorder microphone 9 provided in the vehicle, and generates video data and video data based on the video signal and the audio signal. A recording file including audio data is generated and stored in the storage unit 30. Then, the drive recorder 3 is picked up by the drive recorder microphone 9 from when the use state detection unit 13 of the in-vehicle apparatus 2 detects the start of use of the phone until the end of use of the phone is detected. The output of the audio signal based on the audio to the file generator 21 (means for generating a file) is stopped.

  According to this configuration, after the start and end of use of the mobile phone 4 existing in the car are detected by the in-vehicle device 2, the period from the start to the end of use of the mobile phone 4 is automatically carried by the passenger The output of the audio signal corresponding to the voice of the conversation performed is stopped, thereby preventing the storage unit 30 from storing the recording file in which the audio collected by the drive recorder microphone 9 is recorded in the period. Be done. As a result, when the passenger uses the mobile phone 4, the conversation performed using the mobile phone 4 can be surely prevented from being recorded, without the complicated work by the passenger.

Second Embodiment
Next, a second embodiment will be described. FIG. 3 is a block diagram showing an example of a functional configuration of the drive recorder system 1A according to the present embodiment. In FIG. 3, the components corresponding to the components described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the first embodiment described above, the in-vehicle apparatus 2 includes the use state detection unit 13 and transmits the start detection signal and the end detection signal to the drive recorder 3 according to the use state of the mobile phone 4.

  On the other hand, as shown in FIG. 3, in the present embodiment, the drive recorder 3 and the mobile phone 4A are communicably connected according to Bluetooth and other communication standards. The mobile phone side communication unit 40 of the mobile phone 4A communicates with the drive recorder 3 in accordance with a predetermined communication standard. Furthermore, the mobile phone 4A includes a use state detection unit 13A corresponding to the use state detection unit 13 according to the first embodiment. Similar to the use state detection unit 13 according to the first embodiment, the use state detection unit 13A outputs the start detection signal to the drive recorder 3 when detecting the start of use of the telephone, and detects the end of use of the telephone. In this case, an end detection signal is output to the drive recorder 3. According to the present embodiment, it is possible to prevent the recording of a conversation conducted using a telephone without providing the on-vehicle apparatus 2 with a function of detecting the start and end of use of the telephone. In the present embodiment, the mobile phone 4 corresponds to the "control device" in the claims.

Third Embodiment
Next, a third embodiment will be described. FIG. 4 is a block diagram showing a functional configuration of the drive recorder system 1B according to the present embodiment. In FIG. 4, the components corresponding to the components described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. As apparent from the comparison between FIG. 1 and FIG. 4, the drive recorder 3B according to the present embodiment includes an audio stop unit 23B instead of the audio stop unit 23 according to the first embodiment. An audio signal is input from the in-vehicle apparatus microphone 6 to the audio stop unit 23B. The microphone for outputting the audio signal to the audio stop unit 23 may not be the in-vehicle device microphone 6. That is, the microphone for outputting the voice signal to the voice stop unit 23 may be a microphone capable of collecting the speech of the passenger of the vehicle.

  Further, the drive recorder 3 according to the present modification includes a signal mixing unit L instead of the switch S. The signal mixing unit L receives an audio signal from the drive recorder microphone 9, receives an antiphase signal (described later) from the audio stop unit 23B, mixes the signals, and outputs the mixed signal. The antiphase signal and the signal mixing unit L will be described later.

  In the present embodiment, the voice stop unit 23B receives the start detection signal from the use state detection unit 13 of the in-vehicle apparatus 2 and receives the end detection signal instead of the processing according to the first embodiment. Execute the following processing. That is, the voice stop unit 23 B includes the voice of the passenger (speech including the voice of the conversation performed by the passenger using the mobile phone 4) and the speaker 5 among the voice signals input from the in-vehicle apparatus microphone 6. The voice signal corresponding to the speech voice (voice of the conversation of the person who uses the mobile phone and the other telephone with the communication line connected) is extracted. Hereinafter, the voice signal to be extracted is referred to as "speech voice signal". The voice stop unit 23B performs voice processing including filtering processing on the voice signal input from the in-vehicle apparatus microphone 6 to perform human voice conversation such as environmental noise including running noise, radio voice, audio voice, etc. Speech speech signals are extracted by attenuating and removing speech other than the base speech.

  The voice stop unit 23B generates an anti-phase signal of a waveform opposite in phase to the waveform of the conversational speech signal in response to the extraction of the conversational speech signal, and outputs it to the signal mixing unit L. This antiphase signal is a waveform signal of an antiphase with the voice signal of the voice uttered by the passenger and the other party while the communication line is connected between the mobile phone 4 and the other phone.

  The voice stop unit 23B outputs the reverse phase signal to the signal mixing unit L at an appropriate timing synchronized with the voice signal output from the drive recorder microphone 9 as needed. The signal mixing unit L mixes the voice signal from the drive recorder microphone 9 and the antiphase signal from the voice stop unit 23B, thereby making the passenger's speech among the voice signals input from the drive recorder microphone 9 The voice signal corresponding to the voice of B is canceled by the antiphase signal, and then output to the file generation unit 21. As described above, the waveform of the antiphase signal is opposite in phase to the waveform of the audio signal of the voice uttered by the passenger, so the audio signal from the drive recorder microphone 9 and the antiphase signal are mixed. And the voice signal corresponding to the voice of the passenger's speech is canceled and removed.

  As a result of the above process being performed by the voice stop unit 23B, the file generation unit 21 outputs the period from the reception of the start detection signal to the reception of the end detection signal (= the period when the communication line is connected). Voice signal does not include voice signals based on voices of conversations made using a telephone. As a result, as in the first embodiment, the recording file in which the conversation performed using the telephone during the period is recorded is not stored in the storage unit 30, and the conversation performed by the passenger using the telephone records Can be avoided.

  In particular, in the present embodiment, of the sound collected by the drive recorder microphone 9 during the connection of the communication line, the sound of the conversation performed using the telephone is not recorded, and at least the other sound is Some are recorded. Therefore, when an accident occurs in the above period, at least a part of the voice derived from the accident will be recorded, and compared to the first embodiment, the investigation of the responsibility of the accident, the accident It is possible to enhance the usefulness of the recording file for investigating the cause of

  In the present embodiment, the voice signal corresponding to the voice including at least the voice of the conversation performed by the passenger is removed from the voice signal output from the drive recorder microphone 9 to the file generation unit 21 by the reverse phase signal. It was a configuration. However, the method of removing the audio signal corresponding to the voice including at least the voice of the conversation performed using the telephone from the audio signal output from the drive recorder microphone 9 to the file generation unit 21 is the present embodiment. It is not limited to the illustrated method. For example, with regard to the removal of the speech voice of the person who uses the other telephone connected to the mobile phone 4 and the communication line, the voice stopping unit 23B acquires the voice signal output from the handsfree calling unit 12 to the speaker 5 The configuration may be such that signals of opposite phase are generated and output.

  In addition, each of the above-described embodiments is merely an example of embodying the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. That is, the present invention can be implemented in various forms without departing from the scope or main features of the present invention.

  For example, in the first embodiment, the in-vehicle apparatus 2 includes the use condition detection unit 13, and in the second embodiment, the mobile phone 4 includes the use condition detection unit 13A. That is, the drive recorder 3 is communicably connected to a control device other than the “in-vehicle device 2 and the mobile phone 4”. Furthermore, the controller and the mobile phone 4 are communicably connected. The control device is, for example, a device that relays communication between the drive recorder 3 and the mobile phone 4. Then, a functional block corresponding to the use state detection unit 13 according to the first embodiment may be provided in the control device, and the control device may communicate with the mobile phone 4 to detect the use state of the mobile phone 4.

  Further, for example, in the first embodiment, the microphones (drive recorder microphones 9) connected to the drive recorder 3 and the microphones (vehicle device microphones 6) connected to the in-vehicle device 2 are different microphones. May be configured by the same microphone.

  Further, for example, in response to the start and end of use of the mobile phone 4, the signal transmitted from the in-vehicle apparatus 2 to the drive recorder 3 is not limited to the start detection signal and the end detection signal described in the first embodiment. As an example, instead of the start detection signal, a signal may be transmitted to instruct stop of the output of the audio signal from the drive recorder microphone 9 to the file generation unit 21. Alternatively, instead of the end detection signal, the drive recorder may A configuration may be made to transmit a signal instructing start of output of an audio signal from the microphone 9 to the file generation unit 21.

1, 1A, 1B Drive recorder system 2 In-vehicle device (control device)
3, 3B drive recorder 4, 4A mobile phone (phone)
13, 13A usage condition detection unit 21 file generation unit 23, 23B voice stop unit 30 storage unit

Claims (6)

A drive recorder system comprising: a drive recorder provided in a vehicle; and a control device capable of communicating with the drive recorder,
The controller is
It has a usage condition detection unit that detects the start and end of the use of a telephone that exists in the car,
The drive recorder is
A storage unit capable of storing data;
A video signal is input from a camera provided in a vehicle, and an audio signal is input from a microphone provided in the vehicle, and a file including video data and audio data is generated based on the video signal and the audio signal, and the storage unit A file generation unit to be stored in
Of the voices collected by the microphone between the detection of the start of use of the telephone by the use state detection unit of the control device and the detection of the end of use of the telephone, at least using the telephone An audio stop unit for stopping the output of the audio signal corresponding to the voice of the conversation made to the file generation unit;
A drive recorder system comprising: The voice stop unit is
A switch that switches on / off of the output of an audio signal to the file generation unit from when the start of use of the telephone is detected by the use state detection unit of the control device until the end of use of the telephone is detected The drive recorder system according to claim 1, wherein the drive recorder system is turned off. The voice stop unit is
From the voice signal output from the microphone to the file generation unit during the time from when the start of use of the telephone is detected by the use state detection unit of the control device to when the end of use of the telephone is detected. The drive recorder system according to claim 1, wherein an audio signal corresponding to an audio including at least an audio of a conversation performed using the audio is removed. The voice stop unit is
The voice of the voice including at least the voice of the conversation conducted using the telephone after the start of use of the telephone is detected by the use state detection unit of the control device until the end of use of the telephone is detected. 4. The signal processing method according to claim 3, further comprising: generating an antiphase signal having a waveform opposite to the waveform of the signal and mixing the generated antiphase signal with the audio signal output from the microphone to the file generation unit. Drive recorder system. The drive recorder according to any one of claims 1 to 4, wherein the control device is an in-vehicle device provided in a vehicle, or a mobile phone carried by a passenger entering the vehicle into the vehicle. system. A video signal is input from a camera provided in the vehicle, an audio signal is input from a microphone provided in the vehicle, a file including video data and audio data is generated based on the video signal and the audio signal, and the storage unit A file generating method by a drive recorder system comprising: a drive recorder having a file generation unit to be stored; and a control device capable of communicating with the drive recorder,
A first step of detecting a start of use of a telephone existing in the car, using a use state detection unit of the control device;
The voice stop unit of the drive recorder is performed using at least a telephone among voices collected by the microphone according to the detection of start of use of the phone by the use state detection unit of the control device. A second step of stopping the output of the audio signal corresponding to the speech of the conversation to the file generator;
A third step in which the use state detection unit of the control device detects the end of use of the telephone existing in the vehicle;
A fourth step in which the voice stop unit of the drive recorder cancels the stop of the output of the voice signal to the file generation unit according to the detection of the end of use of the telephone by the use state detection unit of the control device When,
A file generation method by a drive recorder system, comprising: