KR19990021040U - Zoom function control device in digital television receiver - Google Patents

Abstract

The present invention relates to a zoom function control apparatus in a digital television receiver which grasps a text output state when a user selects a zoom function and executes a zoom function and outputs a character at its original size. A video detector 6 for detecting a video signal, an analog / digital converter 13 for converting and outputting an analog video signal into a digital video signal, a video information manager 14 for storing and managing video information, and a video signal. A digital television receiver comprising a video information storage section 15 for storing, a digital video adjusting section 16 for executing a virtual function, an image processing section 17 for processing a video signal, and a controller 100 for controlling the entire apparatus. To; A character recognition unit 101 for recognizing a caption image from the image information stored in the image information storage unit 15, and the reference subtitle information storage unit 102 for storing the reference data of the character recognition unit 101 A subtitle image processing unit 103 for processing the subtitle image recognized by the character recognition unit 101, an image signal output from the image processing unit 17, and a subtitle image signal output from the subtitle image processing unit 103; And a mixer 104 for mixing and outputting the control unit. The control unit 100 controls the subtitle image processing unit 103 to process and output the subtitle image when the subtitle image is detected while the zoom function is executed. Characterized in that.

Description

Zoom function control device in digital television receiver

The present invention relates to a digital television receiver. In particular, when a zoom function is selected by a user, a digital television receiver which grasps a text output state and executes a zoom function and outputs a character at its original size Relates to a zoom control device.

1 is a block diagram showing the configuration of a general digital television receiver currently used.

In the drawing, reference numeral 1 denotes an antenna, 2 denotes a tuner for generating and outputting a predetermined intermediate frequency signal from a broadcast signal received through the antenna 1, and 3 denotes an amplified intermediate frequency signal output through the tuner 2. The IF amplifier section 4, for example, separates the video intermediate frequency signal PIF and the audio intermediate frequency signal SIF from the broadcasting intermediate frequency signal output from the IF amplifier 3, for example, P / S such as a surface acoustic wave filter. It is a separator.

In addition, reference numeral 5 is a voice detector for detecting a voice signal from the voice intermediate frequency signal output from the P / S separation unit 4, 6 is an image intermediate frequency output from the P / S separation unit 4 An image detector detects an image signal from a signal.

In addition, reference numeral 7 is a remote control device for remotely instructing the overall operation of the television receiver, 8 is a receiving unit for converting and outputting an infrared signal output from the remote control device 7 into an electric code signal, 9 is a device It's the microprocessor that controls the whole.

In addition, reference numeral 10 denotes a voice process such as bass, treble, volume, etc. according to a control signal from the microprocessor 9 with respect to the voice signal output from the voice detector 5. 11 is a voice amplifier which amplifies the voice signal processed by the voice processor 10 and outputs it to the speaker 12.

Reference numeral 12 denotes an analog / digital converter for converting and outputting an analog image signal output from the image detector 6 into a digital image signal, and 13 denotes a digital image signal output from the analog / digital converter 12. On the basis of the control signal of the microprocessor (9) with respect to the image information storage unit 15 to be described later sequentially stored in a predetermined unit, a video information management unit, 15 is a video information storage for storing a digital video signal It is wealth.

Further, reference numeral 16 denotes a digital video signal output through the video information management unit 14 or a video signal stored in the video information storage unit 15 according to a control signal of the microprocessor 9. A digital image adjusting unit which processes a still image function or a zooming function, and 17 denotes a color and tint according to a control signal from the microprocessor 9 with respect to the digital image signal output from the digital image adjusting unit 16. An image processor for processing Tint, Brightness, and the like to generate and output corresponding R (Red), G (Green), B (Blue), and luminance (-Y) signals. Digital to analog converter for converting the digital video signal output from the analog video signal to the output 19, the hue signal (R, G, B) and luminance (-Y) output from the digital / analog converter 18) Based on the signal, the CRT (20) A driving unit for the same CRT.

That is, in the apparatus having the above-described configuration, among the broadcast signals received through the antenna 1, the video signal is converted into a digital signal, image processed, and then converted into an analog signal and output to the CRT 20. In this case, when the zoom function is selected by the user, the microprocessor 9 controls the digital image adjusting unit 16 to execute the zoom function on the received image signal.

By the way, if the text subtitle is being output when the zoom function is performed as described above, the size of the output screen is smaller than the size of the basic output screen and the text subtitle is also reduced by the current zoom function. However, there is a problem in that the user cannot identify the character subtitles well.

Therefore, the present invention was created in view of the above circumstances, and when the zoom function is selected by the user, the digital television which grasps the text output state and executes the zoom function and outputs the text in its original size An object of the present invention is to provide a zoom control device in a receiver.

1 is a block diagram showing the configuration of a general digital television receiver;

Figure 2 is a block diagram showing the configuration of a zoom function control apparatus in a digital television receiver according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: antenna 2: tuner

3: IF amplification unit 4: P / S separation unit

5: voice detector 6: image detector

7: remote control unit 8: receiving unit

9, 100: microprocessor 10: voice processing unit

11: voice amplifier 12: speaker

13: analog / digital converter (A / D converter)

14: image information management unit 15: image information storage unit

16: digital image adjusting unit 17: image processing unit

18: Digital / Analog Converter (D / A Converter)

19: CRT drive unit 101: character recognition unit

102: reference subtitle information storage unit 103: subtitle image processing unit

104: Mixer

In the digital television receiver according to the present invention for realizing the above object, the zoom function control apparatus includes an image detector for detecting an image signal, an analog / digital converter for converting and outputting an analog image signal into a digital image signal, and storing image information. A digital television receiver comprising a video information management unit for managing, a video information storing unit for storing a video signal, a digital video adjusting unit for executing a virtual function, an image processing unit for processing a video signal, and a controller for controlling the entire apparatus; A character recognition unit for recognizing a caption image from the image information stored in the image information storage unit, a reference subtitle information storage unit for storing reference data of the character recognition unit, and a caption image recognized by the character recognition unit And a mixer for mixing and outputting a caption image processing unit for processing, and a video signal output from the image processing unit and a caption image signal output from the caption image processing unit. When detected, the subtitle image processing unit controls the subtitle image to be processed and output.

That is, according to the above configuration, when the zoom function is executed, the size of the output video screen executes the zoom function, but the size of the output text subtitles is output in the original size, making it difficult for the user to identify the output subtitles. There will be no.

Next, an embodiment according to the present invention will be described.

FIG. 2 is a block diagram showing the configuration of a zoom function control apparatus in a digital television receiver according to an embodiment of the present invention. In FIG. 2, the same reference numerals are assigned to parts performing the same functions as those of FIG. Is omitted.

In the drawing, reference numeral 100 denotes a microprocessor for controlling the operation of the entire apparatus, and 101 denotes a caption image signal from the image information stored in the image information storage unit 15 based on the control signal of the microprocessor 100. Character recognition unit for extracting and recognizing, as well as output the resulting signal to the microprocessor 100, 102 is the character recognition unit 101 extracts and recognizes the character information according to the control signal of the microprocessor 100 The reference subtitle information storage unit stores the reference subtitle information which is the basis for performing the operation.

Reference numeral 103 is a caption image processing unit for processing and outputting the caption image signal recognized and output by the character recognition unit 101 according to the control signal of the microprocessor 100, and 104 is the image processing unit 17. Is a mixer for mixing and outputting a video signal processed and outputted in the caption image processing unit 104 is processed and output.

Next, the embodiment according to the present invention having the above-described configuration will be described in more detail.

First of all, the voice signal is received from the P / S separation unit 4 and processed by the voice signal and output to the speaker 12. The video signal is first converted into a digital signal by the analog-to-digital converter 13 to be digitally adjusted, and then processed by the image processor 17.

At this time, when the zoom function is selected by the user, the microprocessor 100 controls the digital image adjusting unit 16 to zoom the input image signal.

In addition, the microprocessor 100 continuously searches whether the result signal according to a predetermined character recognition is input from the character recognition unit 101.

In this case, when a predetermined result signal corresponding to the caption recognition is input from the character recognition unit 101, the microprocessor 100 transfers the caption image recognized by the character recognition unit 101 to the caption image processing unit 103. Output control. In addition, the caption image processing unit 103 is controlled to process and output the input caption image signal.

Subsequently, the caption image signal processed and output by the caption image processing unit 103 is mixed with the video signal processed and output by the image processing unit 17 and output to the digital / analog converter 18. do.

That is, according to the above embodiment, when the zoom function is executed, the size of the output video screen executes the zoom function. There will be no.

In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the technical gist of the present invention.

As described above, according to the present invention, when the zoom function is selected by the user, the image output state is grasped so that the image screen executes the zoom function and the characters are output in the original size. Can be realized.

Claims (1)

An image detector 6 for detecting an image signal, an analog / digital converter 13 for converting and outputting an analog image signal into a digital image signal, an image information manager 14 storing and managing image information, and storing the image signal To a digital television receiver having a video information storage unit 15, a digital image adjusting unit 16 for executing a virtual function, an image processing unit 17 for processing a video signal, and a control unit 100 for controlling the entire apparatus. In; A character recognition unit 101 for recognizing a caption image from the image information stored in the image information storage unit 15; A reference subtitle information storage unit 102 for storing reference data of the character recognition unit 101, A caption image processing unit 103 for processing the caption image recognized by the character recognition unit 101, and And a mixer 104 for mixing and outputting the video signal output from the image processing unit 17 and the subtitle video signal output from the subtitle image processing unit 103. The control unit 100 controls the caption image processing unit 103 to process and output the caption image when the caption image is detected while the zoom function is executed.