Radio scanner programmed from frequency database and method

Abstract

A scanning radio and method using a receiver, a channel memory and a display in conjunction with a frequency and linked descriptor database. The frequency and linked descriptor database is queried using a geographic reference to produce a list of local radio channels that includes a list of frequencies with linked descriptors. The list of radio channels is transferred into the channel memory of the scanner, and the receiver is sequentially tuned to the listed frequencies recalled from the list of radio channels while the corresponding linked descriptors are simultaneously displayed.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to scanning radio receivers. More particularly, the present invention relates to a system and method of programming a scanning radio receiver by querying a frequency and linked descriptor database using a geographic search reference.[0003]2. Description of the Related Art[0004]Scanning radio receivers are devices that sequentially tune through plural radio frequencies until a pertinent radio broadcast is detected, at which time the scanning radio receiver stops the scanning process and receives the detected radio broadcast, usually routing the detected audio signals to a loudspeaker or earphone. The detection of a signal causes the scanning radio receiver to open a squelch gate that couples the received signals to the loudspeaker. Once the broadcast ceases, the squelch gate closes and the scanning radio receiver resumes the frequency scanning process. Scanning radio receivers are also calle...

AI Technical Summary

Benefits of technology

The patent describes a method for scanning local radio channels, where a device can selectively enable a portion of the list for sequential tuning. The method also includes using linked squelch tones and a database of frequency and descriptors to improve the efficiency of the scanning process. The device compares the received squelch tone with the linked squelch tone and can selectively enable the present frequency when a match is detected.

Problems solved by technology

This approach is tedious and prone to errors, some of which might never be detected, leading to missed reception opportunities.

In addition, the user had to be familiar with the concepts of trunked versus conventional scanning, the arrangement and allocation of channels in the memory of the scanner, which is particularly complex in the case of trunked systems because of the storage of both radio frequencies and talk group codes.

Additionally, since radio signals have limited range and since radio frequencies are reused over large distances, the user had to find frequencies, tones, and codes utilized in their geographic area before programming the operation of the scanner.

This approach was confusing to users because it is difficult to remember what service is using particular frequencies, etc.

While this is an improvement during operation and reception of the scanner, it made the programming task even more difficult, particularly since most scanners merely had a telephone style numeric keypad.

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