KR100708381B1 - Method for setting up time of digital television - Google Patents

Abstract

The present invention relates to a method of setting the current time information of a digital television which enables the automatic setting of the current time information when the decoder is reset in the digital television. The present invention relates to time information being updated by the STT of the PSIP or forced by the user. The first step of storing the current time in the EEPROM when is set, the second step of delivering the current time information to the microcomputer to count the time, and the time counted in the microcomputer when the decoder is reset by determining whether the decoder is reset. And a third step of adding the time stored in the EEPROM to set the current time.

Digital TV, Time, Micom, Decoder, EEPROM, STT

Description

{Method for setting up time of digital television}

1 is a block diagram of a current time information setting system of a digital television according to the present invention;

2 is a flowchart of a method for setting current time information of a digital television according to the present invention;

3 is a flowchart of a method for setting current time information of a digital television according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: decoder 20: microcomputer

30: EEPROM

The present invention relates to a method of setting time information of a digital television, and more particularly, to a method of setting current time information of a digital television which enables the current time information to be set automatically when the decoder is reset in the digital television.

In general, the current time information setting method through the digital television channel is set to the time information setting of the PSIP (Program and System Information Protocol) containing the video / audio information and various program information of the channel when receiving the digital television broadcasting channel The current time is automatically set by interpreting the relevant STT (System Time Table) data.

However, when watching a digital broadcasting channel through a digital television in this way, even if the current time can be automatically set through the STT data of the PSIP, the incorrect time is caused by incorrect STT data due to the current daylight saving time. This could be set and was not available when watching analog broadcast channels via external input or digital television.

Therefore, when watching an external input or an analog broadcast channel, the time information is transmitted to the decoder at the time of system boot-up so that the time is automatically set. In the case of turning off, the decoder delivers the time information to the microcomputer, and the microcomputer counts the time information until the next booting process is performed, and when the booting of the decoder starts, the decoder delivers the time information to the decoder to set the current time.

However, the above-described method causes the microcomputer to count the visual information only when the user via the remote controller or the like arbitrarily turns off the digital television, and is not affected by external influence such as static electricity, not by the remote controller or the user's arbitrary power off. When only the decoder is reset, the microcomputer cannot receive the time information and thus cannot transmit the time information to the decoder, and thus the time cannot be set automatically. Therefore, the user has to set a new time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problem, and an object of the present invention is to provide a time information setting method of a digital television, which enables the current time information to be set automatically when the decoder is reset in the digital television.

Another object of the present invention is to be able to set the current time information without installing a separate system for setting the current time information, and to compensate for inaccuracies that may occur in the STT data by correcting the time information by itself. have.

The configuration of the present invention devised to achieve the above object is as follows. The present invention is a method of setting the current time of a digital television, the first step of storing the current time in the EEPROM when the time information is updated by the STT of the PSIP or is forcibly set by the user, the current time information in the microcomputer And a third step of counting the time by passing the signal, and a third step of determining whether the decoder is reset and summing the time counted by the microcomputer and the time stored in the EEPROM to set the current time when the decoder is reset. It is characterized by.

Here, in the first step, the EEPROM stores the year, month, and day values, and in the second step, the microcomputer counts in seconds, minutes, hours, and days.

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

1 is a block diagram of a system for setting current time information of a digital television according to the present invention, FIG. 2 is a flowchart of a method for setting current time information of a digital television according to the present invention, and FIG. It is a flow chart of the current time information setting method.

The current time information setting system of the digital television according to the present invention includes a decoder 10, a microcomputer 20, and an EEPROM 30.

First, when the current time information is transmitted from the decoder 20, the microcomputer 20 counts the time in seconds from the current time information, and transmits the counted time to the decoder 10 each time a new boot is performed.

The EEPROM 30 stores time information set by the decoder 10, and provides a year, month, and day value of the time information at boot time.

Finally, the decoder 10 micomes the current reference time information whenever the time information is changed, for example, when the time information is updated by the STT of the PSIP by the digital broadcast channel or the time information is forcibly updated by the user. And then the time counted from the microcomputer 20 and the time stored in the EEPROM 30 when only the decoder 10 is reset in case of power off due to an external influence, for example, static electricity. To set the current time information anew.

That is, the decoder 10 receives the current time information from the microcomputer 20 and simultaneously transmits the time information to the microcomputer 20 to match the time information with the microcomputer 20, and with the external influence, the decoder 10 Even when the reference time is changed, current time information is transmitted to the microcomputer 20 so that the time information with the microcomputer 20 always matches.

The decoder 10 reads the year, month, and day values from the EEPROM 30 and the day, hour, and minute from the microcomputer 20. , The second (Sec) value is read and the date, hour, minute, and second counted by the microcomputer 20 in the year, month, and day stored in the EEPROM 30 are set as the current time.

For example, when the power is turned on by the digital broadcasting channel or the user, the decoder 10 reads the counted time from the microcomputer 20 at bootup and delivers the newly set current time information to the microcomputer 20, and the microcomputer. 20 starts counting again from this transmitted time. When the decoder 10 is powered off and reset on January 1, 2005, due to external influences by static electricity, EEPROM ( If the year, month, and day values stored in 30) are January 1, 2005, and the time information counted by the microcomputer 20 is 20 minutes and 24 seconds per day, that is, one hour and 20 minutes and 24 seconds per day, the EEPROM 30 On January 1, 2005, 1 hour 20 minutes 24 seconds of the microcomputer 20 was added to set the current time information on January 2, 2005, 20 minutes 24 seconds.

In addition, the decoder 10 transmits the newly set current time information to the microcomputer 20, and the microcomputer 20 starts a new count from the transmitted time information.

Next, a description will be given of a setting method using the present time setting system of the digital television.

First, in the method of setting the current time at boot time, the first decoder 10 stores the current time in the EEPROM 30 at boot time (S10), in which the stored time is stored in year, month, and day values.

In addition, the decoder 10 transmits the hour, minute, and second values of the current time to the microcomputer 20 (S12), and accordingly, the microcomputer 20 starts counting from the time transmitted from the decoder 10 (S14). do.

Thereafter, when the decoder 10 is reset due to external influences due to static electricity or the like, the microcomputer 20 transmits the counted time to the decoder 20 as described above (S20), and the decoder 10 receives the microcomputer 20. Read the time transmitted from the) and the time stored in the EEPROM (30) and add the two to set the current time (S22).

That is, the decoder 10 sums the day, hour, minute, and second values counted from the microcomputer 20 and the year, month, and day values stored in the EEPROM 30.

Thereafter, the decoder 10 transmits the current time, that is, hour, minute, and second values, to the microcomputer 20 again (S24), and accordingly, the microcomputer 20 receives a time from the current time transmitted from the decoder 10 again. Start counting.

This process is repeated continuously.

The present invention is not limited to the above-described embodiments, and may be modified and practiced in various ways within the scope of the technical spirit of the present invention.

According to the present invention configured as described above, when the decoder is reset in the digital television, it is possible to automatically set the current time information without installing a separate system for setting the current time information, and at the same time, time due to incorrect STT data. The setting can be complemented.

Claims (3)

In the current time setting method of the digital television, A first step of storing the current time in the EEPROM when the time information is updated by the STT of the PSIP or when the time information is forcibly set by the user; Transmitting a current time information to a microcomputer to count the time; Determining whether the decoder is reset, and when the decoder is reset, a third step of adding the time counted in the microcomputer and the time stored in the EEPROM to set the current time. Way. The method of claim 1, wherein in the first step, the EEPROM stores a year, month, and day value. The method of claim 1, wherein in the second step, the microcomputer counts in units of seconds, minutes, hours, and days.

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