KR19990027031A - How to correct vision on TV - Google Patents

Abstract

The present invention relates to a time correction method in a television, which detects a character string representing time information included on a screen of a broadcast signal and automatically corrects and sets the current time of the television timer.

According to the present invention, there is provided a method of correcting a current time automatically in a television, the method comprising: separating a video signal from a received broadcast signal, converting the video signal into a digital signal, and storing one screen amount; Recognizing a predetermined time string in the screen, and correcting the current time with the recognized time string.

Therefore, it is possible to provide a convenience in that a video receiving device such as a television can automatically correct the current time by detecting a time string representing the current time included on the broadcast screen.

Description

How to correct vision on TV

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time correction method in television, and more particularly, to a time in a television in which a character string representing time information contained on a screen of a broadcast signal is detected and automatically corrected and set in the current time of a timer of the television. It relates to a correction method.

In general, a timer having a current time in an image receiving device such as a television or a video cassette recorder may always maintain an accurate current time only by resetting the current time at a predetermined period due to an error or power failure of an oscillator.

On the other hand, in a broadcasting system that provides an extended data service (EDS), for example, KBPS (Korea Broadcasting Program System) converts data for broadcast programs and scheduled recording and standard time data into digital signals by converting them into digital signals. By inserting into any one line during the erasing period (VBI: Vertical Blanking Interval), this signal is demodulated by the KBPS decoder on the video receiving device side to perform functions such as broadcast program reservation recording and automatic time setting. there was.

Accordingly, the conventional automatic time setting function in the broadcasting system providing the above-described EDS detects standard time data at regular intervals and automatically sets the current time.

However, when the standard system does not transmit standard time data, there is a problem in that the time cannot be automatically corrected.

SUMMARY OF THE INVENTION An object of the present invention is to provide a time correction method for a television, which detects a current time string included in a video signal at a predetermined time and automatically corrects the current timer time.

According to the present invention, there is provided a method of correcting a current time automatically in a television, the method comprising: separating a video signal from a received broadcast signal, converting the video signal into a digital signal, and storing one screen amount; And a step of recognizing a predetermined time character string on the screen and correcting the current time with the recognized time character string.

1 is a schematic block diagram of a television employed in accordance with a preferred embodiment of the present invention.

2 is a flow chart showing a visual correction process in a television according to a preferred embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

10: key input unit 20: microcomputer

30: tuner 40: video / audio signal processing unit

50: monitor 60: speaker

70: screen capture unit 80: character recognition unit

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

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

1 is a schematic block diagram of a television employed in accordance with a preferred embodiment of the present invention, which includes a key input unit 10, a microcomputer 20, a tuner unit 30, an image / audio signal processing unit 40, a monitor ( 50, a speaker 60, a screen capture unit 70, and a character recognition unit 80.

In such a configuration, the key input unit 10 is provided with a plurality of keys for performing the operation of the television outputs a key signal corresponding to the user's key operation, and a predetermined infrared ray using a remote control that can be input at a remote location The key signal carried on the carrier is transmitted / received and applied to the microcomputer 20 described later.

The microcomputer 20 selectively controls the tuner 30 and the image / audio signal processor 40 based on the key signal from the key input unit 10 to control the overall operation of the television. 70, the time string included in the video screen is received from the character recognition unit 80 to correct and control the current time of the internal timer.

In addition, the tuner unit 30 outputs a broadcast signal received by being tuned to a corresponding channel corresponding to the control of the microcomputer 20.

Meanwhile, the video / audio signal processor 50 separates the broadcast signal from the tuner 30 into a video and audio signal under the control of the microcomputer 20, and applies the video signal to the screen capture unit 70. The video and audio signals are processed into signals that can be displayed and output, and output to the monitor 50 and the speaker 60, respectively.

The screen capturer 70 converts the video signal from the video / audio signal processor 40 into a digital signal under the control of the microcomputer 20 so as to display one screen (for example, one frame or one screen). Save the file to internal memory and print it.

In addition, the character recognition unit 80 recognizes a predetermined time character string based on a digital image signal constituting one screen from the screen capture unit 70 and outputs the predetermined character string to the microcomputer 20.

Next, a description will be given in detail with reference to the flowchart of FIG. 2, which is accompanied by a time correction process in a television according to a preferred embodiment of the present invention including the above-described configuration unit.

First, when the designated time is reached in a state in which a time zone (for example, a morning broadcast time zone) in which time information is normally included on a broadcast screen or even a channel is determined (step 200), the microcomputer 20 generates a screen capture unit ( 70 to capture and control one screen (frame or FID) image of the broadcast signal (step 202).

Then, the screen capture unit 70 converts the analog image signal applied through the tuner unit 30 and the image / audio signal processor 40 into a digital image signal and stores it in the internal memory.

Next, the microcomputer 20 read-controls the digital image signal stored in the memory of the screen capture unit 70 to control the character recognition unit 80 to recognize the predetermined time character string (step 204).

Then, the character recognition unit 80 detects the contour of the digital image signal from the screen capture unit 70 and compares the pattern with the predetermined time character string to apply the detected time character string to the microcomputer 20.

Next, the microcomputer 20 determines whether the time string is applied from the character recognition unit 80 (step 206), and corrects the current time of the timer inside the microcomputer 20 when the time string is applied (step 208). .

If the time string is not applied in the above step 206, the process returns to the above step 202 to retry detection of the time string on the next video screen.

On the other hand, since the current time corresponding to the time string applied to the microcomputer 20 is actually the current time before the execution time of steps 202 and 204 described above, the time corresponding to the time string applied to the microcomputer 20 is applied. It will be appreciated that the timer should be set to the current time by adding the execution time of steps 202 and 204 described above.

On the other hand, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit of the present invention.

As described above, according to the present invention, an image receiving apparatus such as a television has an effect of automatically detecting a time string indicating a current time included on a broadcast screen and automatically performing current time correction.

Claims (3)

As a way to automatically correct the current time on your television, Separating a video signal from a received broadcast signal, converting the video signal into a digital signal, and storing one screen quantity; A second step of recognizing a predetermined time character string in a stored screen; And a third step of correcting the current time with the recognized time string. The method of claim 1, wherein the third step is performed by adding the execution time of the first step and the second step to the time character string to correct the current time. 3. The method of claim 1 or 2, wherein said first step starts performing at a predetermined time.