Hands-free unit for a vehicle with an adjustable microphone
The invention relates to a hands-free unit for use of communication devices in vehicles which comprises a housing and an interface for connecting a cellular phone which has a directional microphone connected to said interface, wherein said directional microphone is accommodated in said housing.
1 . An apparatus, comprising:
a housing;
an interface for connecting a cellular phone; and
a directional microphone connected to said interface, wherein said directional microphone is accommodated in said housing.
2 . An apparatus according to claim 1 further comprising a main circuit board arranged in said housing, and wherein said directional microphone is connected to said main circuit board.
3 . An apparatus according to claim 1 , further comprising a component to orient a pickup characteristic of said microphone in a direction towards a driver's seat or in a direction towards a passenger's seat.
4 . An apparatus according to claim 3 , wherein said directional microphone is orientable.
5 . An apparatus according to claim 2 , wherein said housing comprises a first housing component and a second housing component, wherein said main circuit board is accommodated in said first housing component, and said directional microphone is accommodated in said second housing component.
6 . An apparatus according to claim 5 , wherein said second housing component is pivotable around an axis within an angle of between 90 and 270 degrees.
7 . An apparatus according to claim 6 , wherein a pick-up characteristic of said microphone is substantially oriented at an angle between 35 to 75 degrees with respect to said pivot axis.
8 . An apparatus according to claim 6 , wherein said first housing component is provided with a sensor to determine a pivot position of said pivotable second housing component, and wherein said determined pivot position is used to activate the apparatus.
9 . An apparatus according to claim 5 , wherein said first housing component and said second housing component are both provided with electric and mechanic interface elements to detachably connect said first housing component to said second housing component, said first housing component being provided with two of said interface elements to connect said first housing component in a first position or in a second position, and
wherein in said first position a pick-up characteristic of said microphone in said second housing component is oriented in a direction towards a driver's seat and in said second position said pick-up characteristic of said microphone in said second housing component is oriented in a direction towards a passenger's seat.
10 . An apparatus according to claim 5 , wherein said second housing component can be rigidly fixed in one position.
11 . An apparatus according to claim 1 , wherein
said directional microphone is a first directional microphone being fixedly oriented in a direction to a driver seat,
said apparatus being provided with a second directional microphone arranged in said housing oriented in a direction to a passenger seat, and
wherein said apparatus is provided with a circuitry to select said first and/or said second directional microphone as an active microphone.
12 . An apparatus according to claim 11 , wherein said circuitry to select said first and/or said second directional microphone as an active microphone is connected to respective vehicle sensors for determining if the driver seat and/or the passenger seat is occupied, to activate said microphones accordingly.
13 . An apparatus according to claim 1 , further comprising an interface to a vehicle bus.
14 . An apparatus according to claim 1 , wherein said microphone has a lobar pick-up characteristic.
15 . An apparatus according to claim 1 , wherein said interface for connecting a cellular phone comprises a receptacle for a cellular phone.
16 . An apparatus according to claim 1 , further comprising a mechanical interface for connecting a receptacle for a cellular phone.
17 . An apparatus according to claim 1 , further comprising a mechanical interface to a mounting plate for mounting said apparatus in a vehicle.
18 . An apparatus according to claim 17 further comprising a mechanical interface for connecting a receptacle for a cellular phone, wherein said mechanical interface to a mounting plate is complementary to said mechanical interface for connecting a receptacle for a cellular phone.
19 . An apparatus according to claim 1 , further comprising a cellular telephone receiver and a cellular telephone transmitter.
20 . An apparatus according to claim 19 , wherein said interface for connecting a cellular phone comprises a short-range wireless interface for transferring subscriber identity module card information from the cellular phone to the apparatus.
21 . An apparatus according to claim 1 , further comprising a user interface.
22 . An apparatus according to 21 , wherein said user interface comprises a light emitting diode.
23 . An apparatus according to claim 1 , wherein said microphone is provided with an acoustic lens.
24 . An apparatus according to claim 20 , wherein said short-range wireless interface is a Bluetooth interface.
25 . An apparatus according to claim 1 , wherein the apparatus is a hands-free unit for use of communication devices in vehicles.