KR950016024A - Broadcast frequency automatic tuning device and method - Google Patents

Abstract

The present invention relates to a broadcasting frequency automatic tuning apparatus, and in the conventional case, a severe hybrid noise is caused by a frequency deviation of a weak electric field or a non electric field or a district specific frequency division indiscriminately while a vehicle is driving. In order to solve the problem that may be inconvenient to adjust to the frequency of the local broadcasting station, and also to cause a fatal result while neglecting the safer operation when carried out while driving the present invention is to The purpose of the present invention is to provide an automatic tuning device for broadcasting frequency so that the highest sensitivity broadcasting frequency can be continuously tracked and automatically switched to always obtain a good broadcast.

The present invention for achieving the above object is a memory 9 for sequentially outputting the tuning data of each local frequency, and the automatic tuning scan for providing the frequency scan data of each region to the address of the memory 9 By using the unit 20, the present invention has an advantage of continuously tracking and automatically switching the maximum sensitivity broadcast frequency of the same broadcast when the vehicle is traveling in a weak field such as an electric field and the like, and always listening to a good broadcast. .

Description

Broadcast frequency automatic tuning device and method

Since this is an open matter, no full text was included.

1 is a block diagram showing a broadcasting frequency automatic tuning apparatus according to the present invention.

2 is a flowchart for explaining the operation of the broadcasting frequency automatic tuning apparatus according to the embodiment of FIG.

Claims (2)

A broadcasting frequency tuning device including an antenna (1), a mixer section (2), a demodulation section (3), a frequency synthesizing section (4), etc., which stores tuning data of each region for each broadcasting station, selects a broadcasting station, and Memory 9 for sequentially outputting the tuning data of each local frequency for the selected broadcasting station in response to the input of the respective regional scan data, and inputting the station selection signal C1Cn and the signal strength logic signal, the frequency of each region And an auto tuning scan unit (20) for providing scan data to an address of the memory (9). Step S1 of selecting a desired broadcast channel after turning on an operation switch to listen to a radio broadcast, step S2 of modulating a selected predetermined broadcast channel frequency, step S3 of tuning a received broadcast frequency in a best state, Step S4 comparing the predetermined broadcast channel frequency A output at the step S1 and the predetermined broadcast channel frequency B output at the step S3, when the electric field emphasis of the broadcast frequency is large (A> B Step (S6) of changing the broadcasting frequency if (A '= B') is equal to the two broadcasting frequencies. ※ Note: The disclosure is based on the initial application.