Method and apparatus for dynamically adapting FM tuner sensitivity to a local environment for a single-tuner system

A single-tuning, tuner technology, applied in the field of sensitivity setting, can solve the problems of increasing the IF signal gain, changing the front-end bandwidth limit, etc., to achieve the effect of improving the sensitivity

Inactive Publication Date: 2010-12-08
PANASONIC AUTOMOTIVE SYST OF AMERICA
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  • Summary
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Problems solved by technology

Additionally, any means of adaptively increasing the gain of the IF signal, changing the front-end bandwidth limit, and adjusting the bandwidth of the high-cut filter is neither expected nor obvious given the prior art

Method used

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  • Method and apparatus for dynamically adapting FM tuner sensitivity to a local environment for a single-tuner system
  • Method and apparatus for dynamically adapting FM tuner sensitivity to a local environment for a single-tuner system
  • Method and apparatus for dynamically adapting FM tuner sensitivity to a local environment for a single-tuner system

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Embodiment Construction

[0033] The embodiments disclosed below are not intended to be exhaustive, or to limit the invention to the specific forms disclosed in the following description. Rather, the embodiments were chosen and described so that their teachings can be utilized by one skilled in the art.

[0034] Referring now to the accompanying drawings, see specifically figure 1, shows a typical FM tuner sensitivity curve that plots signal level (x-axis) in dBuV versus signal-to-noise ratio (y-axis). The individual graphs include high-cut performance, soft-mute cutoff, stereo signal-to-noise, and mono signal-to-noise levels for a specific radio.

[0035] The settings for the Soft Mute, High Cut and Stereo Mix parameters generally vary based on the local sensitivity of the environment the radio host is currently in. These settings generally vary by antenna type (ie, passive, active, or diversity) and region. For example, the high cut value may vary according to regions of high sensitivity and regio...

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Abstract

A method of operating a single-tuner radio includes tuning into a first frequency. A pause in a first signal associated with the first frequency is detected. Tuning is switched from the first frequency to a second frequency. A signal quality metric for the second frequency is measured. Tuning is switched from the second frequency to the first frequency.

Description

technical field [0001] The present invention relates to radio equipment for use in vehicles, and more particularly to sensitivity settings for radio equipment for use in vehicles. Background technique [0002] As in-vehicle radios become more widely distributed around the world, it becomes more advantageous for the radio to sense the characteristics of its environment and adjust the radio's internal settings accordingly. Currently, most digital AM / FM tuners use a fixed tuner sensitivity threshold for tuner auto-seek operation (ie, operation in which the tuner automatically scans a frequency band until the tuner reaches and stays at a frequency with a sufficiently strong signal). Most digital AM / FM tuners use fixed parameters for other functions as well. The use of fixed tuner sensitivity thresholds and fixed parameters may result in uneven audio quality under different signal conditions. The fixed thresholds and parameter values ​​are generally defined within the calibrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B15/00H04B17/00
CPCH03J1/0075H03J1/0083
Inventor S·杰斯米M·肯吉D·托马斯J·欣格顿
Owner PANASONIC AUTOMOTIVE SYST OF AMERICA
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