KR0178263B1 - Automatic memory method of teleview channel - Google Patents

Abstract

In channel selection of a video device using a microcomputer, when the memory of the broadcasting channel is memorized, an automatic program function or an ADD key must be used, which is time consuming and cumbersome.

Therefore, when the channel being broadcast is tuned by the numeric key or the channel up / down key, if the channel is not changed until a certain time elapses by setting the timer for a certain time, the broadcasting channel at that time is automatically memorized. It is easy to use because it can simply memorize the broadcasting channel by simply watching the broadcasting channel for a certain time.

Description

Auto memorization of watch channel

1 is a TV block diagram to which the present invention is applied.

2 is a channel memory flow chart according to the present invention.

* Explanation of symbols for main parts of the drawings

10: transmitter 20: microcomputer

23: RAM 26: ROM

27: OSD circuit 30: Tuner

32: chroma IC 33: RGB matrix IC

40: voice multiplex module

The present invention relates to an automatic storage method of a viewing channel in a TV and a VCR that tunes a channel to the microcomputer, and automatically stores the channel after a predetermined time by tuning a specific channel.

The channel being watched can be memorized automatically without any key operation.

The reason for memorizing the broadcasting channel in TV and VCR is that if the memory of the broadcasting channel is memorized, only the memorized broadcasting channel is up / down by pressing the up / down key. If not, pressing the channel up / down key will tune to the next channel regardless of whether or not there is a broadcast in the currently tuned channel.

However, there is a method of memorying a broadcasting channel by using an automatic program function or using an ADD key.

The auto program function automatically selects the channel from the lowest channel to the last channel when the auto program key is pressed, and remembers only the channel with the broadcast signal, but this function does not need to memorize or take a long time even if there is no signal channel due to noise. This will be.

In order to use the ADD key, a channel with a broadcast signal must be tuned using the numeric keys or the channel up / down keys, and then the ADD key is pressed. This method is often not known to the user. Even if you know how to use it, you have to operate several keys.

Therefore, the present invention is to provide an automatic storage method of a viewing channel that makes it possible to easily perform a memory of a broadcasting channel by automatically storing a specific channel after a predetermined time after tuning a specific channel. If the channel is not changed until a predetermined time has elapsed after the broadcast channel has been tuned, the channel at that time is automatically memorized, which is convenient for use.

In the present invention, a channel tuning method of a video device using a microcomputer,

Determining whether a channel is tuned and setting a timer when the channel is tuned;

Setting a timer again when the tuned channel is converted, and determining whether a predetermined time has elapsed if the tuned channel is not converted;

After a predetermined time elapses, a process is performed to determine whether a channel is tuned if there is no broadcast signal, and if there is a broadcast signal, memory the tuned channel at that time.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a TV block diagram to which the present invention is applied.

The key press of the transmitter 10 is received by the remote control module 11 and applied to the microcomputer 20

The key press of the key matrix block 12 is configured to input the pulse output of the kisscan output unit 21 to the kisscan input port 22 so as to be recognized by the microcomputer 20.

The internal signal connection of the microcomputer 20 is made by the bus line 28, and the ROM 26 stores programs and data necessary for operating the TV, and the RAM 23 stores data that need to be temporarily stored, and a computing device ( 24 is configured to perform an operation.

In addition, the microcomputer 20 includes an OSD circuit 27 for outputting an OSD signal and a processing controller 25 for performing audio multiplexing control. The microcomputer 20 is a known IC applied to a general TV.

The tuner 30 tunes the broadcast signal to the IF IC 31 by the tuning data of the microcomputer 20, and processes the video signal and the audio signal in the IF IC 31 to process the chroma IC 32 and the audio, respectively. To multiple modules 40.

The left and right channel audio signals processed by the voice multiplexer module 40 are volume-controlled by the amplifier 42 through the tone control IC 41.

The left and right channel audio signals amplified by the amplifier 42 are configured to be output to the left channel speaker 43 and the right channel speaker 44, respectively.

Meanwhile, the image signal processed by the chroma IC 32 is applied to the RGB matrix IC 33 to be matrixed with the OSD signal of the OSD circuit 27 and then displayed on the CRT 35 through the RGB drive 34.

In the block diagram of such a general TV, only the channel memory operation of the present invention is described, and other functions are omitted.

The microcomputer 20 checks the key input of the transmitter 10 or the key matrix block 12 with the program data of the ROM 26, and sends the tuning data of the tuned channel to the tuner 30 when the channel tuning key is input. To tune.

When a particular channel is tuned, the microcomputer 20 determines whether a predetermined time has elapsed by setting a timer. If the channel is converted before the predetermined time has elapsed, the microcom 20 outputs tuning data and sets a timer.

However, if a certain channel is tuned and a predetermined time elapses, the presence of a broadcast signal is checked to determine whether the channel is selected from the beginning if there is no broadcast signal, and if there is a broadcast signal, the tune channel at that time is stored in the RAM 23.

Therefore, the channel channel is operated automatically only by selecting and watching the channel being broadcast (this is the same as a general TV watching method). Therefore, when a channel up / down key is input, only the memorized channel is up / down to easily perform a desired broadcast. You can tune in.

2 is a channel memory flowchart according to the present invention.

If the power is 'on' and the TV mode is selected, it is determined whether the channel is tuned by the numeric key or the channel up / down key (S1).

When the channel has been tuned, the channel number of the tuned channel is displayed as an OSD character, the tuning data is output, an automatic fine tuning operation is performed (step S2), and a timer for checking the passage of a predetermined time is set (step S3). .

When there is a channel tuning key input (step S1), the corresponding channel is tuned (step S2), and a timer is set for a predetermined time, and then it is checked whether the channel tuning key input of the currently selected channel is changed (step S4). process).

If the current channel does not change, the timer decreases the time (step S5) and checks whether a certain time has elapsed (step S6). If the current channel changes before a certain time elapses, the timer is set again (step S3). Is performed.

If the tuned channel does not change until a predetermined time elapses, it is checked whether there is a broadcast signal in the tuned channel at that time (step S7).

Here, the presence or absence of the broadcast signal detects the synchronization signal in the broadcast signal and determines the presence or absence of the broadcast signal according to the presence or absence of the synchronization signal.

If it is determined that there is no broadcast signal by checking the presence or absence of a broadcast signal, the process starts from the beginning of determining channel selection from the beginning, and if it is determined that there is a broadcast signal, the broadcast channel is memorized in RAM (operation S9). Finished.

Therefore, if a channel is tuned and the channel is not changed until a certain time has elapsed, the presence of a broadcast signal is checked and, if there is a broadcast signal, the broadcast channel is memorized. Therefore, a separate key operation is required to memorize the channel being broadcast. There will be no.

In other words, when a channel is broadcast and a predetermined time elapses, the broadcast channel is automatically memorized, so only the memorized broadcast channel is up / down at the time of channel up / down, which is convenient to use.

Claims (1)

In the channel selection method of a video device using a microcomputer, the method of determining whether a channel is tuned and setting a timer when the channel is tuned, and setting a timer again when the tuned channel is converted and a predetermined time when the tuned channel is not converted And a process of determining whether the channel is tuned if there is no broadcast signal, and if there is a broadcast signal, memorizing the tune channel at that time if there is a broadcast signal. Automatic storage of channels.