KR19980029613A - Apparatus and method for setting character size by automatic recognition of text information when watching text broadcasting with TV receiver - Google Patents

Abstract

The present invention relates to an apparatus and method for setting a character size by automatically recognizing character information when watching a character broadcast using a television receiver. When fewer characters are displayed as subtitles while viewing a character broadcast, the viewer must operate the key input unit to enlarge the screen. In order to eliminate the inconvenience of the double-height function only when the function is set, the decoder 380 checks the frame of the character in the decoded data, reads the character information and the amount of information, sets the character size, and inputs it to the microcomputer 200. A device incorporating the character size setting device 700 into a conventional TV, a process of determining whether the character size is smaller than a prescribed value while watching TV, and if the character size is smaller than the prescribed value, the character information is read by checking a frame of the character data. And recognize and control the code data of the character frame to read the character information amount of the character code data Provides a method of setting the text size to a prescribed value, and a method of setting the text size to allow viewers to read the enlarged text information by expanding the text to the set size and automatically when the text size is smaller than the prescribed value. By realizing the double height function and dividing the screen into two parts to enlarge the character size, the user's trouble can be eliminated.

Description

Character Size Setting Device by Automatic Character Information Recognition When Watching Text Broadcasting with TV Receiver

The present invention relates to a television receiver (hereinafter referred to as a TV), and more particularly, when there is a small number of characters displayed as subtitles on a CRT screen while watching teletext transmitted from a broadcasting station, each character information is automatically recognized. When the character size is set, the microcomputer realizes the double height function and expands the character to a TV receiver for outputting on a CRT screen. .

The double height function refers to a function of dividing a CRT screen into two parts to enlarge and view a specific screen selected by splitting, if necessary.

In general, a TV for receiving and watching a character broadcast transmitted from a broadcasting station includes a microcomputer 200 for controlling overall operations of the TV by manipulation of the key input unit 220 and the microcomputer 200 as illustrated in FIG. 1. A memory 240 for storing data to be processed in the < RTI ID = 0.0 > and < / RTI > a tuner 100 for receiving and tuning a broadcast signal of a channel selected by the preset voltage output from the microcomputer 200 from the antenna ANT, and An image processor 300 for processing an image signal of the broadcast signal tuned by the tuner 100, an image amplifier 320 for amplifying the image signal output from the image processor 300, and the microcomputer 200; The text broadcasting microcomputer 360 for processing data related to the text broadcasting, which is compatible and received, and the text broadcasting data among the broadcasting signals processed by the image processor 300, are transferred to the control signal of the text broadcasting microcomputer 360. The decoder 380 decodes and inputs the image signal to the image processor 300, and the vertical synchronization signal and the horizontal synchronization signal of the image signal displayed on the screen of the CRT 400 by the vertical / horizontal synchronization signal processed by the image processor 300. A vertical / horizontal synchronization processor 340 for deflecting a synchronization signal, a CRT 400 for receiving an image signal (including text data) output from the image amplification unit 320 and displaying it on a screen; and the tuner 100 A voice processor 500 for processing a voice signal of the broadcast signal received by the voice signal, a voice amplifier 520 for amplifying the voice signal processed by the voice processor 500 to a predetermined level, and the voice amplifier 520. The speaker 600 and 620 are largely configured to receive and output the amplified voice signal to allow the viewer to listen to the voice.

Referring to the stock information displayed on the CRT (400) screen for watching the general character broadcast configured as described as an example, if the viewer selects the broadcast channel to watch by operating the key input unit 220, it is recognized A microcomputer 200 generates a tuning voltage corresponding thereto and applies it to the tuner 100. Accordingly, the tuner 100 tunes the broadcast signal of the character broadcast channel selected by the tuner voltage generated by the microcomputer 200 through the antenna ANT to tune the broadcast signal received from the free space to the image processor 300 and the audio processor. The broadcast signal is input to 500. Thus, the image processor 300 processes the image signal from the broadcast signal tuned by the tuner 100 by the control signal of the microcomputer 200 and transmits the processed image signal to the image amplifier 320 and the decoder 380. Enter it. The decoder 380 decodes the data related to the character broadcast from the broadcast signal input by the control signal of the character broadcast micom 360 that is compatible with the microcomputer 200 and inputs it to the image processor 300. Therefore, the image processor 300 digitally processes the image signal including the character broadcast data decoded by the decoder 380 and inputs the image signal to the image amplifier 320. That is, the image amplifier 320 amplifies the video signal to a level that can be displayed on the screen of the CRT 400, is supplied to the CRT 400, and finally the video signal transmitted from the broadcasting station to the free space on the screen of the CRT 400; The text broadcast signal is displayed so that viewers can understand the information about stocks displayed as captions of text data while watching the video.

At this time, if the character size displayed as a subtitle on the screen of the CRT (400) is not able to watch smoothly, the viewer operates the keys of the key input unit 220 to set the double height function, and the microcomputer 200 divides the screen into two parts. The signal is output and input to the image processor 300. Accordingly, the image processor 300 divides the screen of the CRT 400 into two by the control signal of the microcomputer 200, enlarges the image of the selected screen, and amplifies the screen to the predetermined level through the image amplifying unit 320. Zoom in so that viewers can clearly see the divided screen.

Here, the vertical / horizontal synchronization processor 340 deflects the image signal and the character broadcast signal displayed on the screen of the CRT 400 in the vertical direction and the horizontal direction based on the vertical synchronization signal and the horizontal synchronization signal processed by the image processor 300. Done.

In addition, the voice processor 500 processes the voice signal from the broadcast signal that is tuned from the tuner 100 and inputs the processed voice signal into the voice amplifier 520. Accordingly, the voice amplifier 520 amplifies the voice signal processed by the voice processor 500 to a predetermined level and outputs the audio signal to the speakers 600 and 620 so that the viewer can listen to the voice.

However, in general, a TV for watching a character broadcast requires that the viewer set the screen magnification function by manipulating the key input unit when there are few characters (eg, stock information) displayed as subtitles while watching the character broadcast transmitted from the broadcasting station. Because the height function is realized, it is not easy to divide the screen into two parts at the moment, and the person who does not operate the TV function correctly when the characters are displayed on the CRT screen, that is, the infant or the elderly, cannot read the characters displayed on the CRT screen correctly. If it did not happen.

In the present invention, in order to solve the above-mentioned shortcomings, the purpose of the present invention is to recognize each character information displayed as a caption on a CRT screen, read the information amount, and automatically realize the double height function when the character size is smaller than the prescribed value. It can be divided into two to enlarge the size of the text to eliminate the inconvenience of viewers by manual operation.

Another object of the present invention is to realize a double-height function for automatically dividing the screen into two screens if the character size is less than the prescribed value, even if a person who cannot operate the TV function (for example, young children, the elderly) is on the CRT screen. It is to make it possible to read the characters displayed as subtitles correctly.

According to the present invention for achieving the above object, the character size is set by checking the frame of the character in the data decoded by the decoder 380 to read the character information and the amount of information to set the character size to input to the microcomputer 200 A process of determining whether the text size is smaller than the prescribed value while the device is included in the existing TV, and if the text size is smaller than the prescribed value, the text information is read and recognized by checking the frame of the text data. By controlling the code data of the frame, the character information of the character code data is read and the character size is set to the prescribed value, and the character is enlarged to the set size so that the viewer can read the enlarged character information. It is a main feature to provide a method for setting the character size.

1 is a schematic block diagram showing a television receiver for watching a general teletext.

Figure 2 is a block diagram showing a television receiver including a character size setting device by automatic character information recognition when viewing the character broadcast according to the present invention.

Figure 3 is a flow chart showing the operation of the television receiver including a character size setting device by automatic character information recognition when viewing the character broadcast according to the present invention.

Explanation of symbols on the main parts of the drawings

100: tuner 200: micom

220: key input unit 240: memory

300: Video Processor 320: Image Amplifier

340: vertical / horizontal synchronization processing unit 360: text broadcasting microcomputer

380: Decoder 400: CRT (Cathode-Ray Tube)

500: Sound Processor 520: Voice Amplifier

600,620: Speaker 700: Character size setting device

710: command receiving control unit 712: data slice unit

714: Data reading unit 716: SI (Service Identification) unit

718: PC (Pcket Control) 720: Information amount reading

Hereinafter, a configuration according to an embodiment of the present invention will be described with reference to FIG. 2. The microcomputer 200 generally controls the operation of the TV by the operation of the key input unit 220 and the microcomputer 200 to be processed. A memory 240 for storing data, a tuner 100 receiving and tuning a broadcast signal of a channel selected by the tuning voltage output from the microcomputer 200 from the antenna ANT, and the tuner 100 An image processor 300 for processing an image signal of a tuned broadcast signal, an image amplifier 320 for amplifying an image signal output from the image processor 300, and a character received in a compatible manner with the microcomputer 200; The character broadcasting microcomputer 360 for processing data related to broadcasting and the broadcasting signal processed by the video processor 300 decode the data related to text broadcasting by the control signal of the character broadcasting microcomputer 360 to process the image. A decoder 380 input to the parser 300 and a vertical / horizontal synchronization signal processed by the image processor 300 are used to deflect the vertical synchronization signal and the horizontal synchronization signal of the image signal displayed on the screen of the CRT 400. A vertical / horizontal synchronization processor 340, a CRT 400 for receiving an image signal output from the image amplifier 320 and displaying it on a screen, and processing a voice signal of a broadcast signal received by the tuner 100. The audio processor 500, a voice amplifier 520 for amplifying the voice signal processed by the voice processor 500 to a predetermined level, and the audio signal amplified by the voice amplifier 520 outputs the viewer In a TV for receiving a character broadcast having speakers 600 and 620 for listening to voice, a character frame is checked from data decoded by the decoder 380 to read character information and information amount (size). Set the size to microcomputer (200 Character size setting apparatus 700 to be input to the) is configured to be further included.

The character size setting apparatus 700 includes a data slice unit 712 for checking a frame of character data decoded by the decoder 380, a reading unit 714 for reading character information of the data whose frame is checked, and a readout. The SI unit 716 for recognizing the received character information, the PC unit 718 for controlling the code data of the recognized character frame, and reading the actual amount of information from the code data of the controlled character frame to set the character size to receive the command. The information amount reading unit 720 input to the microcomputer 200 through the control unit 710 is provided.

3 is a flow chart showing the overall operation process according to the present invention, the step of checking whether the TV is on (S301), if the TV is on (S302) and watching the character broadcast (S302), the character size while watching the character broadcast TV Is determined to be smaller than the prescribed value (for example, 15 points) (S303), and if the determined character size is equal to or larger than the prescribed value, displaying normal characters (S312), and if the character size is smaller than the prescribed value, Checking the frame of the character data (S304), reading the character information of the checked character frame (S305), recognizing the read character information (S306), and the code data of the recognized character frame. Controlling (S307), reading the character information amount of the controlled character code data and setting the character size to a prescribed value (S308), enlarging the character to the set size (S309), and expanding the enlarged character information Viewers read In step S311, determining whether the character size is equal to or larger than the prescribed value (S311), and if the determined character size is smaller than the prescribed value, returns to step S304, and displays normal characters when the character size is larger than or equal to the prescribed value. It is shown that the step (S312) made.

Looking at the operating state of the present invention made as described above, when the viewer operates the key input unit 220 to select the broadcast channel to be watched in the state of power supply (S301), the microcomputer 200 that recognizes it corresponds to this A preset voltage is generated and applied to the tuner 100. Accordingly, the tuner 100 tunes the broadcast signal of the character broadcast channel selected by the tuner voltage generated by the microcomputer 200 through the antenna ANT to tune the broadcast signal received from the free space to the image processor 300 and the audio processor. The broadcast signal is input to 500.

Thus, the image processor 300 processes the image signal from the broadcast signal tuned by the tuner 100 by the control signal of the microcomputer 200 and transmits the processed image signal to the image amplifier 320 and the decoder 380. Enter it. The decoder 380 decodes the data related to the character broadcast from the broadcast signal input by the control signal of the character broadcast micom 360 that is compatible with the microcomputer 200 and inputs it to the image processor 300. Therefore, the image processor 300 digitally processes the image signal including the character broadcast data decoded by the decoder 380 and inputs the image signal to the image amplifier 320. That is, the image amplifier 320 amplifies the video signal to a level that can be displayed on the screen of the CRT 400, is supplied to the CRT 400, and finally the video signal transmitted from the broadcasting station to the free space on the screen of the CRT 400; Since the text broadcasting signal is displayed, the viewer views the information regarding the stock in which the text data is displayed as the caption while watching the video (S302).

At this time, the character broadcast micom 360 compatible with the microcomputer 200 determines whether the character size displayed as a caption on the screen of the CRT 400 is smaller than a prescribed value (for example, 15 points) (S303).

If the character size is greater than or equal to the predetermined value as a result of the determination, the character broadcasting microcomputer 360 inputs the character data decoded by the decoder 380 to the image processor 300 and the image processor 300 is input by the decoder 380. The image data is synchronized with the tuner 100 and the input image signal is processed and amplified to a certain level through the image amplifying unit 320 to display an image on the screen of the CRT 400 and to display normal characters above a prescribed value with subtitles. Display (S312) to allow the viewer to read this.

However, if the character size displayed on the screen of the CRT 400 is smaller than the prescribed value (for example, 15 points) as determined in step S303, the text broadcasting microcomputer 360 may slice the data slice unit 712 of the character size setting apparatus 700. In step S304, the data slice unit 712 checks a frame of the character data decoded by the decoder 380 by outputting a control signal. The character data whose frame is checked by the data slice unit 712 is read through the reading unit 714 (S305), and the SI unit 716 recognizes the signal of the character information (S306) to the PC unit ( 718). That is, the PC unit 718 controls (S307) a signal for reading the information amount of code data of the character frame recognized by the SI unit 716 and inputs it to the information amount reading unit 720.

The information amount reading unit 720 reads the character information amount of the input character code data controlled by the PC unit 718 and sets the character size displayed as a caption on the screen of the CRT 400 to a prescribed value (for example, 15 points). S308) and inputs to the microcomputer 200 compatible with the character broadcasting microcomputer 360 through the command receiving control unit 710. Therefore, the microcomputer 200 compatible with the text broadcasting microcomputer 360 inputs a control signal to the image processor 300 to enlarge and display the text data with a prescribed value. Thus, the image processor 300 enlarges the character size decoded and inputted by the decoder 380 to a predetermined value (for example, 15 points) (S309), amplifies it to a predetermined level through the image amplifying unit 320, and then uses the CRT 400. Characters displayed as subtitles on the screen are displayed as prescribed values (eg, 15 points) so that the viewer can read the character information enlarged to the prescribed values (S310). When the characters displayed as captions are displayed on the screen of the CRT 400 by a prescribed value, the text broadcasting micom 360 compatible with the microcomputer 200 determines whether the size of the characters displayed on the screen of the CRT 400 is equal to or larger than the specified value ( S311). If the character size is smaller than the predetermined value as a result of the determination, the character broadcasting micom 360 outputs a control signal to the data slice unit 712 of the character size setting apparatus 700 so that the data slice unit 712 is the decoder 380. In order to check the frame of the character data to be decoded in the it is to be repeatedly performed in the above order from the process.

On the other hand, if the character size is greater than or equal to the predetermined value as determined in step S311, the character broadcasting microcomputer 360 inputs the character data decoded by the decoder 380 to the image processor 300, the image processor 300 The character data input from the decoder 380 and the image signal tuned by the tuner 100 are processed and amplified to a predetermined level through the image amplifying unit 320 to display an image on the screen of the CRT 400 and to display a subtitle. By displaying the normal characters above the prescribed value (S312) so that the viewer can read it.

Here, since the voice processor 500 processes the voice signal and outputs the voice to the speakers 600 and 620 is already described in the related art, a description thereof will be omitted.

As described above, the present invention recognizes each character information displayed as a caption on a CRT screen, reads the amount of information, and automatically realizes a double height function when the character size is smaller than a prescribed value, thereby dividing the screen into two parts to enlarge the character size. The troublesomeness of the viewer can be eliminated, and in particular, a person who cannot operate a TV function, that is, a child or an elderly person, can accurately read the character information displayed as a subtitle on a CRT screen.

As described in the claims, the present invention has been described with respect to an apparatus for setting a character size by automatic recognition of character information when viewing a character broadcast with a television receiver, and a method thereof. Its application and modification will be possible.

Claims (3)

A microcomputer 200 for controlling TV operations, a memory 240 for storing data, a tuner 100 for receiving and tuning broadcast signals of a channel selected by a preset voltage from an antenna, and an image processor for processing video signals. 300, a video amplifier 320 for amplifying a video signal, a text broadcast micom 360 compatible with the microcomputer 200 to process text data, and a decoder 380 by decoding text data of a video signal. And a CRT (400) for displaying an image including a character, the character size is determined by checking a character frame from the data decoded by the decoder 380 to read the character information and the amount of information. Character size setting device by the automatic character information when watching the character broadcast, characterized in that it comprises a character size setting device 700 input to the microcomputer 200. The apparatus of claim 1, wherein the character size setting apparatus 700 includes a data slice unit 712 for checking a frame of character data decoded by the decoder 380, and a reading unit for reading character information of the data whose frame is checked. 714, the SI unit 716 that recognizes the read character information, the PC unit 718 that controls the code data of the recognized character frame, and the actual amount of information from the code data of the controlled character frame, Character size setting apparatus by automatic recognition of character information when watching a character broadcast with a TV receiver, characterized in that it comprises the information amount reading unit 720 to set the size and input to the microcomputer 200 through the command receiving control unit (710). In the character size adjustment method displayed on the TV screen, a process of determining whether the character size is smaller than the prescribed value while watching TV, and if the character size is smaller than the prescribed value, the character information is read and recognized by checking the frame of the character data and the character frame. TV code that automatically controls the code data of the character code data to read the character information amount of the character code data to set the character size to the prescribed value, and enlarges the character to the set size so that the viewer can read the enlarged character information. How to set the character size by automatic recognition of character information when watching a character broadcast with a receiver.