Audio and video system based on geographical information system

A geographic information system, geographic information technology, applied in the field of navigation and integrated systems and their control, can solve problems such as disturbing passengers to listen to audio

Inactive Publication Date: 2017-04-05
TIANJIN GUANRUILIN TECH DEV CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0004] As mentioned above, in the conventional integrated navigation and A/V system, the audio signal is temporarily

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  • Audio and video system based on geographical information system

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Embodiment Construction

[0014] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0015] In the present invention, in the process of outputting the audio signal, once the guidance voice of the navigation system is generated, the guidance voice and the audio signal are separated, and the speaker is assigned to output the guidance voice and the audio signal simultaneously. The guidance voice is output through a speaker adjacent to the driver, while the audio signal is output through a speaker adjacent to the passenger but not the driver. For example, a front speaker outputs a guidance voice while a rear speaker outputs an audio signal, or a driver's side speaker outputs only a guidance voice while the other speakers output an audio signal.

[0016] A detailed description is given below with reference to the...

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Abstract

The invention provides an audio and video system based on a geographical information system. The method includes the steps of image preprocessing, wherein a geographical information image is obtained and is partitioned into blocks according to the terrain rule in the geographical information image, and the terrain rule includes the terrain roughness degree; image transforming, wherein for each block, two-dimensional wavelet transform is used for transform processing, adopts biorthogonal wavelet and is decomposed into two-time one-dimensional wavelet transform to be processed, the two-time one-dimensional wavelet transform includes low-frequency data transform and high-frequency data transform, and the low-frequency data transform and high-frequency data transform are carried out in parallel; image coding, the image obtained after two-dimensional wavelet transform is quantified and encoded, and an ECBOT algorithm is adopted in coding. Calculation quantity of image processing is small, and operation speed is higher while image quality is not affected remarkably.

Description

technical field [0001] The present invention relates to an audio-video system based on a geographic information system, and more particularly, to a navigation and integration system and a control method thereof for preventing audio signals from being interrupted due to voice guidance of a navigation system. Background technique [0002] Currently, with the increase in the number of cars owned by each family, cars are becoming a necessity of life. As more time is spent in the car, there is a need to install an audio system in the car. In recent years, drivers have been or are paying attention to installing an audio / video system (hereinafter referred to as "A / V system") that combines an audio system and a video system to allow the driver to enjoy movies or television. At the same time, drivers have or are paying attention to installing navigation and telematics systems, which can measure their own location based on the Global Positioning System (GPS) to provide road guidance ...

Claims

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Application Information

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IPC IPC(8): G01C21/36
CPCG01C21/3629
Inventor 徐德才
Owner TIANJIN GUANRUILIN TECH DEV CO LTD
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