 Scrambling type method and apparatus for video transmission/receipt |
| It is therefore an object of the present invention to provide a scrambling type video transmitting/... |
|
| Control circuit for a matrixed four channel audio reproducing system |
| The present invention pertains to a control circuit for use in an audio reproducing system having a ... |
|
| Apparatus and method for equalizing a soundfield |
| A preferred embodiment of the present invention in its first aspect comprises apparatus for ... |
|
| Fully differential voltage controlled operational transconductance amplifier |
| The invention is directed to a simple, reliable, inexpensive, operational transconductance ... |
|
| Differential transimpedance amplifier |
| The present invention reduces the input impedance and increases the bandwidth of a differential ... |
|
| Method of and apparatus for modulation dependent signal amplification |
| Referring to FIG. 1, an example transmitter 10 is shown. The transmitter 10 may preferably be a ... |
|
| Integrated circuit for audio enhancement system |
| It is therefore an object of the invention to provide an improved system for enhancement of the ... |
|
| Non malleable encryption apparatus and method |
| The present invention uses an encryption technique and a signing technique to provide a non-... |
|
| Method and system for providing secure subscriber content data |
| Therefore, it is an object of the present invention to provide an interactive multimedia personal ... |
|
| Group key distribution |
| OF THE PREFERRED EMBODIMENT The present invention provides a group key distribution technique ... |
|
|
Vehicle audio system
| Details |
Inventors: Albus, Rainer; Bauer, Adel; Niemczyk, Norbert;
Assignee: DaimlerChrysler AG (Stuttgart, DE)
Primary Examiner: Ramakrishnaiah; Melur
Assistant Examiner:
Attorney, Agent or Firm: Crowell & Moring LLP
A vehicle audio system has an audio central unit to which one or more further audio components are connected via an associated first data bus, and are interfaced for data communication between the first data bus and a second data bus of another type in the vehicle. One of the audio components is an audio gateway unit which contains the interface, and is an independent component separate from the audio central unit. In addition to the data bus gateway functions, the audio gateway unit includes further standard audio functions spanning vehicle types or countries, or further audio functions which are implemented so as to be parameterizable according to specific vehicle type and/or country. |
|
DETAILED DESCRIPTION OF THE DRAWINGS The vehicle audio system shown schematically in FIG.
1 contains an audio data bus 11 in a ring structure (e.
g.
, in the form of a MOST ring bus), which is used to connect an audio central unit 12, an audio gateway unit 13, a car telephone unit 14 and a voice control system unit 15 to one another.
Compared with the conventional system of FIG.
2, the audio central unit 12 in the system according to the invention can be functionally much less complex.
Like the conventional central unit 2, it is used as the front end and for user interface (MMI) control, but is largely free of the audio functions of the conventional central unit 2.
In the system according to the invention, these further functions are implemented in the audio gateway unit 13, which is provided as an independent component in addition to the reduced-function audio central unit 12.
In the first instance, the audio gateway unit 13 forms the gateway interface between the audio data bus 11 and a further data bus 16 in the vehicle, for example a data bus of the type CAN-B, which is used to connect the audio system to the rest of the "vehicle environment", in particular to a combination instrument 17 used primarily for display functions, to a multifunction steering wheel 18 and vehicle components which are relevant to diagnosis, and to warning tone request means.
The further functions implemented in the audio gateway unit 13 in addition to this interface function are uniform for various types of vehicle, including various vehicle series, and/or various countries of use and are thus standard, requiring no matching specific to vehicle type or country.
Alternatively, they are stored such that they can be parameterized in the audio gateway unit 13 according to specific vehicle type and/or country, and can therefore be matched using appropriate parameterization.
In this way, the audio gateway unit 13 realizes an audio system component which spans vehicle types and countries and which contains one or more of the following sets of functions, depending on application instance and requirement
|
|
Audio Signal Processing 
