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Method for scheduling audio treatment of motor vehicle, and associated operating system

An audio processing and operating system technology, applied in the input/output process of data processing, electrical digital data processing, program control design, etc., can solve the problems of audio stream delay and inability to effectively process the input audio stream, so as to reduce delay, Reduced development time and installation time, audio architecture flexible effects

Inactive Publication Date: 2017-09-26
ARKAMYS
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Problems solved by technology

[0009] However, this timing of unit functions does not allow efficient processing of incoming audio streams, which are often delayed relative to each other
For example, when Bluetooth is activated to make a voice call to the driver and other audio streams are being processed simultaneously, some audio streams will be delayed due to time differences in the audio streams and differences between master clocks of different inputs

Method used

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  • Method for scheduling audio treatment of motor vehicle, and associated operating system
  • Method for scheduling audio treatment of motor vehicle, and associated operating system
  • Method for scheduling audio treatment of motor vehicle, and associated operating system

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Embodiment Construction

[0023] Figure 1 to Figure 3 Shown is a method 10 for scheduling the audio processing of a motor vehicle comprising a plurality of audio functions integrated in the operating system 12 in the form of unit functions 32 . The present invention can be installed on all enhanced operating systems, such as Linux or Android. For example, the operating system 12 may run on an ARM (registered trademark) or Cortex (registered trademark) processor. The operating system 12 comprises an application level 14, then a multimedia application sublevel 15, and finally an audio processing sublevel 16 integrating audio processing according to the invention.

[0024] The audio processing sub-level 16 comprises a framework 19 that aggregates a set of structural components 29 . In computer programming, a framework is a set of structural software components used to create the basis and outline of all or part of a software package (architecture). The framework 19 in figure 2 is represented by a se...

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Abstract

The present invention relates to a scheduling method (10) for an audio treatment of a motor vehicle, comprising elementary functions (32) having inputs and outputs and a sampling frequency generated by a master clock, and inputs and outputs having a frame rate and a sampling frequency generated by a master clock, the method comprising the following steps: grouping (40), in synchronicity domains (Ds), the elementary functions (32) by which the master clocks are synchronized, calculating (42) a maximum treatment time (Tm) corresponding to the time necessary both in order to treat all the input and output frames by the elementary functions (32) given that the inputs and outputs are produced sequentially, and also in order that the elementary functions (32) return to their initial states, and determining (44) a scheduling (Of) of the elementary functions (32) of each synchronicity domain (Ds) as a function of the maximum treatment time (Tm).

Description

technical field [0001] The invention relates to a method for scheduling audio processing in a motor vehicle, and an associated operating system. [0002] The invention is a particularly advantageous application for motor vehicles which include a very rich and varied audio architecture. Background technique [0003] Motor vehicles integrate more and more audio streams from different sources and for different peripheral devices. For example, a motor vehicle may include means for processing and reading audio streams from CD players, MP3 players, car radios, integrated GPS and Bluetooth inputs. These audio streams can be played through the two front speakers, the center unit, the two rear speakers and / or the driver's hands-free kit. [0004] Digital signal processors are implemented in conventional ways to process the different audio streams. Digital Signal Processors (also called DSPs in literature) are microprocessors optimized to run applications as fast as possible to per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/48
CPCG06F9/4881G06F13/4217G06F1/12G06F3/165
Inventor 伊凡·布尔莫伊斯特尔
Owner ARKAMYS
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