Alert receiver
First Claim
1. A method of automatically selecting a particular channel from a preselected set of channels comprising the steps of:
- a. preselecting a set of channels as received by means for receiving broadcast radio signals;
b. scanning each channel in said preselected set of channels;
c. automatically determining each channel'"'"'s relative received signal strength;
d. storing each channel'"'"'s relative received signal strength in a memory bank;
e. automatically selecting said channel with the highest relative received signal strength;
f. monitoring said channel with said highest relative received signal strength until the next scanning cycle during which said channel with said highest relative received signal strength will again be determined, selected and monitored; and
,g. automatically activating said scanning cycle after a preset period of time after prior said scanning cycle.
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Accused Products
Abstract
This invention relates to an apparatus and method for receiving and automatically detecting the issuance of emergency, weather or other alert messages broadcast on a radio channel, and recording that alert message into an alert receiver on solid state voice circuitry with a day and time stamp for later playback. This invention also teaches interface methods between the alert receiver and other communication systems whereby an alert message, or an alarm tone, is automatically relayed and repeated on the other communication system after the issuance of an alert message. A method and apparatus for automatically selecting the strongest received signal from a set of pre-selected channels, monitoring the selected channel for signal strength and the presence of modulated audio, and a sequence for automatically initiating the channel selection process, should certain preset minimum parameters for the received signal fail to be met, is also taught. A method and apparatus for selectively activating other communication systems for only those alert messages of specific concern to certain users of the other communication system is also taught herein. A method and apparatus in which the alert receiver user can select the radio channel and the alert tone(s) to activate the alert receiver is also taught herein.
61 Citations
10 Claims
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1. A method of automatically selecting a particular channel from a preselected set of channels comprising the steps of:
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a. preselecting a set of channels as received by means for receiving broadcast radio signals; b. scanning each channel in said preselected set of channels; c. automatically determining each channel'"'"'s relative received signal strength; d. storing each channel'"'"'s relative received signal strength in a memory bank; e. automatically selecting said channel with the highest relative received signal strength; f. monitoring said channel with said highest relative received signal strength until the next scanning cycle during which said channel with said highest relative received signal strength will again be determined, selected and monitored; and
,g. automatically activating said scanning cycle after a preset period of time after prior said scanning cycle. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for automatically selecting a particular channel from a preselected set of channels comprising:
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a. means for preselecting a set of channels as received by means for receiving broadcast radio signals; b. means for scanning each channel in said preselected set of channels; c. means for automatically determining each channel'"'"'s relative received signal strength; d. means for storing each channel'"'"'s relative received signal strength in a memory bank; e. means for automatically selecting the channel with the highest relative received signal strength; f. means for monitoring said channel with said highest relative received signal strength until the next scanning cycle during which said channel with said highest relative received signal strength will again be determined, selected and monitored; and
,g. means for automatically activating said scanning cycle after a preset period of time after prior said scanning cycle. - View Dependent Claims (7, 8, 9, 10)
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Specification