KR970007477B1 - Method of automatic channel selecting & memory for broadcasting receiver - Google Patents

Abstract

A method for remembering automatically selected channels for broadcasting receivier is disclosed. The mehtod for remembering automatically selected channels for broadcasting receivier, comprises the steps of: scanning broadcasting band received by antenna if main power of the broadcasting receivier is turned on; determining whether voice signal is detected in the broadcasting frequency scanned; storing channel of a corresponding broadcasting frequency and selecting voltage of the channel when the voice signal is detected; and outputting the selecting voltage of the channel corresponding to the stored broadcasting frequency as channel selecting key input of keypad. Thereby, channels of broadcasting frequency can be stored without additional key operation.

Description

Automatic channel tuning memorization method of broadcast receiver

1 is a block diagram showing the internal configuration of a conventional broadcast receiver;

2 is a flowchart showing a process of performing a channel selection memory operation by a conventional broadcast receiver;

3 is a block diagram showing an internal configuration of a broadcast receiver according to the present invention;

4 is a flowchart illustrating a process of performing channel tuning memory operation by the broadcast receiver according to the present invention.

* Explanation of symbols for main parts of the drawings

10: FM tuner 20: AM tuner

30: micom 40: memory

50: key pad

The present invention relates to an automatic channel tuning memory operation of a broadcast receiver, and more particularly, to sequentially broadcast only a channel for transmitting a broadcast signal by scanning a broadcast channel transmitted at different broadcast frequencies according to a region when power is input. The present invention relates to an automatic channel tuning memory method of a broadcast receiver capable of storing a channel tuning frequency of a channel corresponding to the frequency at which the signal is transmitted.

In general, a broadcast receiver (refering to a TV receiver or a radio) that receives a broadcast signal transmitted from a broadcast station is conventionally used for each channel among broadcast frequencies transmitted by a broadcast station using a baricon or bar antenna that increases or decreases capacitance. The corresponding broadcast frequency is tuned and received.

As the manufacturing technology of broadcasting equipment has developed and the communication technology has developed, the tuning method of broadcasting reception has shifted from the conventional method of converting capacitance by using a bar-icon or other switching switch, and has been tuned through a micro-communicator in a broadcasting device. Scanning all received frequency bands has resulted in tuning only a tuning frequency corresponding to a channel on which a broadcast signal is transmitted.

One embodiment of a broadcast receiver using such a scheme is configured as shown in FIG. Where 100 is an antenna, 101 is a band pass filter, 102 is a combiner, 103 is a resonator oscillator, 104 is an intermediate frequency processor, 105 is a micom, and l06 is a key pad ( Key Ped). The broadcast receiver as described above removes other noise components from the bandpass filter 101 when a signal including broadcast frequencies and noise components corresponding to a plurality of broadcast channels transmitted from a broadcasting station is received through the antenna 100. Only the frequency is filtered and applied to the synthesis unit 102.

The synthesizer 102 synthesizes the resonance frequency oscillated by the resonator oscillator 103 and the broadcast frequency through the band pass filter 102 and applies the synthesized frequency to the intermediate frequency processor 1. In the present invention, only the audio frequency is filtered out of the synthesized frequencies and applied to the microcomputer 105 and the audio signal processing circuit (not shown).

Thus the microcomputer 105 to which the audio-frequency key pad 106, a channel selection voltage (V _T) channel and the channel selection voltage (V _T) corresponding to the going and converts scanning the stations in a broadcast frequency comprises a broadcast signal A channel selection key input among the keys formed in the storage unit is stored in a stack connected to the microcomputer 105.

That is, a broadcast signal including a voice signal is detected by detecting a broadcast signal flowing through the intermediate frequency processing unit 104 according to a manipulation of a key for up / down tuning of a preset voltage V _T among the keys formed on the keypad 106. Inflow, the channel into which the voice signal flows and the tuning voltage VT are stored in a stack connected to the microcomputer 100 in response to a key input of the keypad 106.

This operation is repeatedly performed as the key for channel setting of the key formed in the keypad 106 is operated, and the user changes the area because the broadcasting frequency for a certain channel is transmitted at different frequencies according to the region. Every time a user wants to store the tuning voltage V _T in the microcomputer 105 and tunes the broadcasting frequency by manipulating a key formed in the keypad 106 every time, the user scans the broadcasting frequency. There was this.

As shown in FIG. 2 in more detail, when a function of a broadcast receiver is selected from among a plurality of sound devices including a broadcast receiver, and an automatic / manual scanning key is operated among the keys of a keypad formed on the broadcast receiver, control of the microcomputer is performed. The tuning voltage is converted to tune the broadcast signal.

When a broadcast signal including a voice signal is received, the microcomputer determines whether to store the tuning voltage of the broadcast frequency corresponding to the channel by using a key pad of the keypad, and saves it by the key operation. Is displayed.

This operation is repeatedly performed by the user according to a key operation for scanning a broadcast signal to store the tuning voltage level corresponding to the channel in the memory.

However, the channel auto-tuning memory method has a problem that the user has to select a broadcasting channel and a preset voltage level by scanning the broadcasting signal again whenever the region changes.

Therefore, the present invention has been devised to eliminate the inconvenience as described above, and the main power is supplied to the broadcast receiver and the whole broadcast frequency band is scanned under the control of the microcomputer to detect and detect the broadcast frequency band including the voice signal. Automatic channel of the broadcasting receiver to store the tuning voltage and broadcasting frequency for tuning the broadcast frequency in sequence in the memory and to output the tuning voltage stored in the memory according to the channel selection key input to tune the broadcasting signal including the voice signal. The purpose is to provide a method of memory selection.

The automatic channel tuning memory method of the present invention for realizing the above object is performed to store a broadcasting channel and a tuning voltage by tuning only a broadcasting signal including a voice signal among broadcasting frequencies including a plurality of broadcasting signals. When the main power supply is detected, the entire band of the received broadcast frequency is scanned, and whether or not the voice signal is included in the broadcast frequency to be scanned is determined. The channel and the tuning voltage of the frequency are stored, and the tuning frequency of the channel corresponding to the stored broadcasting frequency is output to the channel selection key input of the keypad to tune the broadcasting frequency.

Hereinafter, the configuration of the present invention in more detail with reference to the accompanying drawings as follows.

The present invention is composed of an FM tuner 10, an AM tuner 20, a microcomputer 30, a memory 40, and a keypad 50 as shown in FIG.

4 is a flowchart illustrating a process of performing an automatic channel storing operation of a broadcast receiver according to the present invention. The broadcast frequency including a plurality of broadcast signals transmitted from a broadcast station is scanned to tune only a broadcast signal including a voice signal. In the operation of storing the broadcast channel and the preset voltage according to the memory selection key operation, if the main power supply to the broadcast receiver is detected, scanning the entire band of the broadcast frequency received through the antenna; Determining whether to include the voice signal out of the frequencies, storing the channel and the tuning voltage of the corresponding broadcast frequency when detecting the voice signal, and using the channel selection key input of the keypad with the tuning voltage of the channel corresponding to the stored broadcast frequency. Performing the step of outputting and tuning the broadcast frequency; The will to perform.

Referring to the operational effects of the present invention configured as described above are as follows.

In the FM tuner 10 and the AM tuner 20 to which the preset voltage V _T outputted from the microcomputer 30 is applied, the broadcast signal transmitted from a broadcasting station is received in multiple channels and output to a voice processing circuit (not shown). To be processed.

At this time, the microcomputer 30 determines whether the main power is introduced into the broadcast receiver, and when the main power is introduced, the microcomputer 30 scans all broadcasting frequency bands received through the FM tuner 10 and the AM tuner 20 (the preset voltage ( V _T ) is converted to scan the broadcast frequency.) To determine whether or not the voice signal is included.

During broadcasting frequency scanning, channels and tuning voltages (V _T ) of all corresponding broadcasting frequencies including voice signals are stored in the memory 40, and tuning channels of the corresponding channels according to channel selection key inputs formed on the keypad 50. The VT is output to the FM tuner 10 and the AM tuner 20 to tune the broadcast frequency.

Referring to the operation of the microcomputer 30 in more detail with reference to FIG. 4, in the standby state of the microcomputer 30, the main power supply of the broadcast receiver is detected. When the main power is supplied, the FM tuner 10 and the AM The tuning voltage V _T is supplied to the tuner 20 to tune the broadcast frequency received through the FM tuner 10 and the AM tuner 20.

When the preset broadcast frequency is tuned, the microcomputer 30 searches for the broadcast signal received and tuned again to determine whether a voice signal is included.

When a broadcast signal including a voice signal is received, the channel corresponding to the received broadcast frequency and the tuner voltage V _T output to the FM tuner 10 and the AM tuner 20 are stored in the memory 40. do.

On the other hand, when a broadcast signal that does not include a voice signal is received, the corresponding channel and the tuner voltage V _T outputted to the FM tuner 10 and the AM tuner 20 are not stored in the memory 40. Instead of converting the tuning voltage (V _T ) and output to the FM tuner 10 and the AM tuner 20 to tune the broadcast frequency.

This operation is performed for all frequency bands used as the broadcast frequency. If the key manipulation formed in the keypad 50 is performed while performing the operation, the broadcast receiver performs the operation according to the operated key value.

In addition, when the main power of the broadcast receiver is out of power, the channel stored in the memory 40 and the corresponding tuning voltage (V _T ) are cleared, and when the main power is supplied, the new channel and corresponding tuning voltage (V _T ) are cleared. To be stored in the memory 40.

A memory (40) channels and channel selection voltage to the microcomputer 30 which stores the value of the tuning voltage (V _T), which is a key value operation when kijung channel selection key is operated is formed in the keypad (50) (V _T ) Is output to the FM tuner 10 and the AM tuner 20 to tune the broadcast frequency.

As described above, according to the present invention, power is supplied to the broadcast receiver, the broadcast frequency is scanned, the channel and the tuning voltage of the broadcasting frequency including the voice signal are stored, and the corresponding tuning voltage is output by the channel selection key input. By allowing broadcast frequencies to be tuned, channels of broadcast frequencies can be stored without key manipulation regardless of region.

Claims (2)

A method of scanning a broadcast frequency including a plurality of broadcast signals transmitted by a broadcast station, tuning only a broadcast signal including a voice signal, and storing a broadcast channel and a preset voltage according to a memory selection key operation. If the main power supply to the broadcast receiver is detected, scanning the entire band of the broadcast frequency received through the antenna; determining whether the voice signal is included in the broadcast frequency; and when the voice signal is detected, the corresponding broadcast frequency. Storing the channel and the tuning voltage of the channel and outputting the tuning voltage of the channel corresponding to the stored broadcasting frequency through a channel selection key input of the keypad to tune the broadcasting frequency to perform the broadcasting channel tuning memory operation. Automatic channel tuning memory method of the broadcast receiver characterized in that. The method of claim 1, wherein the broadcast receiver is capable of clearing the stored channel and the corresponding tuning voltage when the main power is cut off.