Adaptive night-time high definition (hd) signal sensitivity threshold for hd radio receivers

A high definition (HD) radio receiver, comprising:

• an operating mode determiner for determining a time of day dependent operating mode for the HD radio receiver;
• a signal strength characteristic determiner for determining a signal strength characteristic of a HD radio signal for a station to which the HD radio receiver is tuned;
• and
• a HD signal sensitivity threshold adjuster for setting a HD signal sensitivity threshold value of the HD radio receiver as a function of the operating mode and, when it is determined that the operating mode corresponds to night-time operation rather than daytime operation, setting the HD signal sensitivity threshold value of the HD radio receiver as both a function of the operating mode and a function of the HD radio signal strength characteristic.

A method, comprising:

• determining a time of day dependent operating mode for a high definition (HD) radio receiver;
• setting a HD signal sensitivity threshold of the HD radio receiver to a daytime HD signal sensitivity threshold value in response to determining that the operating mode is dependent upon daytime operation of the HD radio receiver;
• determining a signal strength characteristic of a radio signal of a station to which the HD radio receiver is tuned in response to determining that that the operating mode is dependent upon night-time operation of the HD radio receiver;
• and
• setting a value of the HD signal sensitivity threshold of the HD radio receiver as a function of the signal strength characteristic of the HD radio signal in response to determining the signal strength characteristic of the HD radio signal.