KR101316177B1 - Hands-free system for driver - Google Patents

Abstract

A vehicle hands free system is disclosed that includes a microphone switch. A vehicle hands free system includes a microphone for receiving an audio signal; And an on / off switch for starting and terminating an operation of the vehicle hands-free system. Here, the microphone and the on-off switch may be implemented as an integrated integrated microphone switch, and operation of the vehicle hands-free system may be controlled by the rotation of the integrated microphone switch. According to the present invention, in combination with the chassis ground (GROUND) when the hands-free system is not used, it is possible to improve the durability and contamination prevention of the microphone cell.

Microphone, handsfree, vehicle

Description

Hands-free system for a vehicle including a microphone switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle hands-free system, and more particularly to a vehicle hands-free system capable of on-off control by applying a rotary mechanism type for an in-vehicle voice call and a voice recognition microphone.

With the development of electronic communication technology, mobile phones are widely used nationwide. In addition, a vehicle having a hands-free function is widely used to allow a user to make a convenient and safe phone call while driving the vehicle.

1 is a block diagram of a voice recognition and hands-free module according to the prior art, Figure 2 is a view illustrating a microphone installation position in the vehicle according to the prior art.

Referring to FIG. 1, the voice recognition and hands-free module includes a microphone for receiving a driver's voice, an amplifier for amplifying the analog voice output from the microphone, and an amplified analog voice output from the amplifier as a digital signal. A / D converter to convert, Digital Signal Processor (DSP) to process digital signal input from A / D converter, and data necessary for operation of voice recognition and hands-free module are stored and requested by DSP control And a D / A converter for converting the digital signal processed by the DSP into an analog signal and outputting the same.

In addition, a vehicle switch (not shown) for initiating operation of the voice recognition and hands-free module is configured to be combined with the DSP. The vehicle switch is a toggle and TACT switch structure that is mounted away from the microphone, and generates only a high / low signal according to the use of the user.

In the application of the voice recognition and hands-free module according to the prior art, the microphone is generally installed at a position such as Santa Fesia, VIP seat, steering wheel, driver's head. In addition, the vehicle switch may be provided in the Santa Fesia separation position or the vehicle hands free system, or may be installed in the rear arm arm rest, on the steering wheel, or the like.

However, in the case of a microphone and an amplifier (i.e., a dotted line processing part of FIG. 1) among the speech recognition and hands-free modules according to the prior art, when applied to a vehicle, it is always possible to use the analog signal due to the magnetic vibration of the microphone. As the power is applied by the pull-up voltage, not only the durability of the magnetic is deteriorated, but also there is a problem of causing inconvenience in use due to noise generated by dust generation due to dust collection.

In addition, the hands-free system for a vehicle according to the prior art has a disadvantage in that it requires a large number of actions in use by positioning the vehicle switch separately from the microphone in various positions for each vehicle.

The present invention has been proposed to solve such a problem, and has a microphone and a switch integrally configured and a rotary type structure, to provide a hands-free system for a vehicle that can provide convenience of use by using contact between both signals. It is for.

In addition, the present invention is to provide a hands-free system for a vehicle that can be combined with the chassis ground (GROUND) when the hands-free system is not used to improve the durability and pollution prevention of the microphone cell.

In addition, the present invention is to provide a vehicle hands-free system that allows the user to integrate the microphone and the microphone operation control on-off switch to increase the awareness of the position of the microphone to provide convenience.

In addition, the present invention prevents unnecessary noise input to the audio (+) input terminal and prevents DC bias from the circuit by opening the microphone (+) terminal and the audio (+) terminal in a circuit when the hands free system is not in use. It is to provide a vehicle-free hands-free system that can extend the durability of the microphone cell by removing.

In addition, the present invention is to provide a vehicle hands-free system that can prevent the inflow of dust and other contamination through the mechanical hole and reduce the aesthetic appearance by enabling the mechanical hole blocking by the rotation when the hands-free system is not used. will be.

In order to achieve the above object, a vehicle hands-free system according to the present invention includes a microphone for receiving an audio signal; And an on / off switch for starting and terminating an operation of the vehicle hands-free system. Here, the microphone and the on-off switch may be implemented as an integrated integrated microphone switch, and operation of the vehicle hands-free system may be controlled by the rotation of the integrated microphone switch.

The (+) terminal and the audio (+) terminal of the microphone may be contacted by the rotation of the integrated microphone switch to start the vehicle hands-free system.

Wrinkles or protrusions may be formed on the surface of the integrated microphone switch.

As described above, the present invention has the effect of providing a convenience of use by using the contact between the two signals as a structure of the rotatable type by constituting the microphone and the switch integrally.

In addition, the present invention is combined with the chassis ground (GROUND) when the hands-free system is not in use has the effect of improving the durability and contamination prevention of the microphone cell.

In addition, the present invention has the effect that the user can increase the recognition of the position of the microphone by providing a convenience by integrating the microphone and the microphone operation control on-off switch.

In addition, the present invention prevents unnecessary noise input to the audio (+) input terminal and prevents DC bias from the circuit by opening the microphone (+) terminal and the audio (+) terminal in a circuit when the hands free system is not in use. By removing it, the durability of the microphone cell can be extended.

In addition, the present invention enables the mechanical hole blocking by rotation when the hands-free system is not in use, thereby suppressing the inflow of dust and other contamination through the mechanical hole and reducing the aesthetic appearance.

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

3 and 4 is a view showing the structure of the microphone circuit and the on-off switch according to an embodiment of the present invention. For reference, FIG. 3 shows an on state, and FIG. 4 shows an off state.

Referring to FIG. 3 where the on state is shown. As shown by the reference numeral 310, when the microphone is used, a metal instrument (+) end connected to the microphone (+) end is contacted with the audio (+) input end by a user's rotation to connect a signal.

That is, the microphone (+) end and the instrument (+) end (ie, audio and line) metal contacts are connected to carry a voice signal.

In addition, as shown at 320, the positive end of the microphone and the metal instrument (-) end contact are separated.

Referring to FIG. 4 where the off state is shown, as shown at 410, the positive end of the microphone is connected to the negative end of the vehicle instrument (i.e. chassis ground) to electrically stabilize (i.e., DC bias). Value is zero). Thus, there is no dust and other noise input signals even when unused for a long time. That is, the positive end of the microphone and the metal end (ie, chassis ground) of the microphone are connected.

In addition, as shown at 420, the positive end of the microphone and the metal instrument (+) end contact are separated.

5 and 6 is a view showing the front shape of the integrated microphone switch structure and mounting inside according to an embodiment of the present invention. For reference, FIG. 5 illustrates a switch on state, and FIG. 6 illustrates a switch off state.

Referring to FIG. 5 in which the switched on state is shown, the microphone input hole is exposed to the outside, but referring to FIG. 6 in which the switched off state is shown, it can be seen that the microphone input hole is received inside.

A feature of the structural shape of the integrated microphone switch is that a part of the microphone protrudes on the surface of the appliance, and the upper and lower surfaces may be wrinkled to facilitate the rotation of the protruding portion.

In addition, the feature of the mounting surface of the integrated microphone switch may require space securing in consideration of the rotation of the device even if mounted according to the existing vehicle microphone mounting position.

7 is a diagram illustrating a structure and a mounting plan of an integrated microphone switch according to an exemplary embodiment of the present invention. FIG. 7 assumes a case where the integrated microphone switch is mounted on the ceiling portion above the driver's head.

As illustrated in FIG. 7, the on / off operation control is possible by rotating the switch.

8 is a detailed operation implementation of the integrated microphone switch according to an embodiment of the present invention.

Referring to FIG. 8, when a microphone-shaped instrument protruding out of the vehicle apparatus is rotated down to use a microphone, a yellow metal contact portion connected to the (+) end of the microphone is connected to an audio (+) signal line. Pink) and a circuit path of the microphone of the vehicle is formed. This enables voice input using a microphone.

In addition, when the user's use of the microphone is finished, the user rotates the microphone protrusion of the microphone upward so that the input part (hole) of the microphone is invisible, and the (+) end of the microphone is circuitally connected to the signal line of the audio (+) end. When the rotation is completed and the rotation is completed, it is connected to the (-) end metal (sky blue) contact part of the device which is connected to the vehicle chassis ground. Circuitally, the microphone (+) stage is separated from the audio (+) stage and connected to the chassis ground of the vehicle. At this time, an electric DC bias is short-circuited to the microphone (+) end, and the input groove of the microphone is not visible in appearance.

Referring to FIG. 8, the operation using the integrated microphone switch will be briefly described.

When the user attempts to use the microphone to use the voice recognition and hands-free for the vehicle, the apparatus of the integrated microphone according to the present invention is rotated in a predetermined direction to inform the presence or absence of the microphone to the DSP and other terminals, and to turn on / off the power to the microphone cell. ON / OFF).

When the microphone is used, the microphone (+) end and the audio (+) end are contacted by the rotation of the instrument and are connected to the circuit to supply DC power as the power is applied. On the contrary, if the instrument is rotated, the microphone (+) end is separated from the audio (+) end, and the metal bias connected to the chassis ground on the opposite side is contacted, and the DC bias is zeroed in circuit. Durability reduction and dust collection due to the DC bias inflow into the cell is avoided.

In use, it can be mechanically rotated to see the microphone's input hole, and when not in use, the instrument and the switch are integrated to prevent the microphone's input hole from being seen. This prevents dust from entering the microphone cell due to the mechanical hole and prevents the appearance of an aesthetic appearance. .

1 is a block diagram of a voice recognition and hands-free module according to the prior art.

2 is a view illustrating a microphone installation position in a vehicle according to the prior art.

3 and 4 is a view showing the structure of the microphone circuit and the on-off switch according to an embodiment of the present invention.

5 and 6 is a view showing a front view of the integrated microphone switch structure and mounting inside according to an embodiment of the present invention.

Figure 7 illustrates the integrated microphone switch structure shape and mounting scheme according to an embodiment of the present invention.

8 is a detailed operation implementation of the integrated microphone switch according to an embodiment of the present invention.

Claims (3)

In a vehicle hands free system, A microphone receiving an audio signal; And On and off switch for starting and ending the operation of the vehicle hands-free system, The microphone and the on-off switch are implemented as an integrated integrated microphone switch, and the start of operation of the vehicle hands-free system is controlled as the (+) terminal and the audio (+) terminal of the microphone are contacted by the rotation of the integrated microphone switch. Vehicle hands-free system, characterized in that. delete The method of claim 1, Vehicles hands-free system, characterized in that the surface of the integrated microphone switch wrinkles or protrusions are formed.

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