KR0163137B1 - Text mode conversion method of tv having teletext function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a text mode setting method for a television having a text multicast reception function. The present invention relates to a tuner 18 for tuning a specific channel, and to processing a voice signal among broadcast signals of a channel tuned by the tuner 18. Audio signal processing means (20, 22, 24), video signal processing means (28, 30, 34, 36) for reproducing and processing video signals among broadcast signals of channels tuned by the tuner (18), and predetermined channels A character multiplexing television comprising a character decoder 32 for detecting text data transmitted in a video signal of a video signal and processing the text data as a text signal, wherein the text multiplex is included in a video signal of a predetermined channel and transmitted. When a specific channel is registered for a broadcast signal and a channel registered as the specific channel is selected by the control signal input unit 10 in the TV mode, a text multicast signal according to the specific channel is displayed. Automatically tune to a channel to be sent next is character information for a character signal processing in the automatic switching to the character decoder 32 to the TEXT mode is output reproduced through the CRT (38).

Description

How to set the text mode on a TV with the text multi-broadcast function

1 is a block diagram of a television applied to the text mode setting method according to an embodiment of the present invention.

2 is a flowchart for explaining a text mode setting method in a television with a character multi-broadcast reception function according to an embodiment of the present invention.

3 (a) and 3 (b) show examples of screen display according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: control signal input unit 12: control unit

14: channel data storage unit 16: OSD processing unit

18: tuner 20: voice IF module

22: voice signal processor 22: voice amplifier

26: speaker 28: video IF module

30: video signal processor 32: character decoder

34: RGB switching unit 36: video amplifier

38: CRT 40: EPROM

42: timer

The present invention relates to a text mode setting method of a television having a text multicast receiving function, and more particularly, to a video signal of a specific channel using a channel up / down button in a television having a text multicast receiving function. The present invention relates to a text mode setting method for a television having a text multicast reception function for setting a TEXT mode for a text multicast to be transmitted.

At present, the broadcasting station edits domestic and foreign news, economic industry, sports, tourism and leisure, culture and arts, life / science / women, broadcasting, securities, and special information into letters or figures, and then encodes them to display video signals along with regular TV programs. It provides so-called Teletext service, which transmits digital signals in the vertical return period.

In order to provide such a teletext service, a broadcasting station divides various information by field while editing a regular program, edits it into a screen of several hundred pages like a magazine, and attaches a page number to each screen. Since all the following screens are sent out in the form of digital signals in the specified order in a quick cycle, the receiving side collects only the signals for the page composition desired by the viewer in order, among the digital signals appearing only in the vertical retrace period, and displays them on the screen or as a speaker. When outputted, the information desired by the viewer appears. Therefore, the regular program can not see the news except the news time, but the text broadcast reception at any time by selecting the page with the news, the viewer can see the news.

In the case of the text multicasting, when a viewer watches a TV broadcast signal for a specific channel and selects the TEXT mode, the text multicasting function is performed according to the text multicasting signal included in the video signal of the corresponding channel. . However, when the viewer wants to watch the text multicast provided from another operator while the text multicast function is being performed, the text multi-signal for the desired text multicast in the state of switching the set TEXT mode to the TV mode It was cumbersome to switch the channel that is being transmitted and to set the TEXT mode on that channel to acquire the information according to the text multicast provided by the other operator.

When the viewer desires to watch a specific channel of a TV broadcast while the viewer is watching the text multicast in the TEXT mode, the viewer may switch the TEXT mode to the TV mode and select a target channel. I could watch TV broadcasts received on certain channels.

Accordingly, the present invention has been made in view of the above-described circumstances, and the channel number is assigned to the TV broadcast signal by adjusting the channel up / down by assigning channel numbers to the character multiplex signals transmitted and included in the video signal of the TV broadcast signal. It is an object of the present invention to provide a text mode setting method for a television having a text multicast reception function, which enables the mode setting for text multicasting included in the video signal of each channel to be performed.

According to an embodiment of the present invention for realizing the above object, a tuner for tuning a specific channel, voice signal processing means for reproducing and processing a voice signal of the broadcast signal of the channel tuned in the tuner, tuning in the tuner A video signal processing means for reproducing a video signal among broadcast signals of a predetermined channel, and a text decoder for detecting TEXT data transmitted in a video signal of a predetermined channel and processing the TEXT data as a text signal. In a broadcast television, a specific channel is registered for a text multicast signal transmitted by being included in a video signal of a predetermined channel, and when the channel registered as the specific channel is selected by a control signal input unit in the TV mode, the specific channel is selected. Automatically tunes the channel through which the text multi-broadcast signal is transmitted, and then automatically switches to the TEXT mode. The text mode set in the character information for a character signal processing in a decoder with teletext receiving function to be played through the television CRT output method is provided.

In addition, when a channel for TV broadcasting is selected in the TEXT mode, the channel is automatically tuned to the TV mode, and then the video signal and the audio signal for the TV broadcast signal are reproduced and output through the speaker and the CRT. When the registration mode is set, the OSD screen for channel registration is displayed, and when data for channel registration is input in response to the OSD screen, the specific channel is registered for the text multicast signal by storing the data in the data storage. .

According to the present invention having the above-described configuration, after the viewer registers a text multiplex signal (TEXT signal) included in a video signal of a specific channel and transmits it to a specific channel, the channel allocated to the text multiplex signal is a channel up / down button. If you adjust using, it is possible to easily switch between text multicasting and TV broadcasting by allowing the user to watch the text multicasting without having to go through a separate TEXT mode switching or channel switching step.

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

1 is a block diagram of a television to which a text mode setting method is applied according to an embodiment of the present invention. In FIG. 10, reference numeral 10 denotes a control signal for inputting a control signal for an operation function provided to the television. As an input unit, the control signal input unit 10 comprises a remote control applied to a remote control of a corresponding television or a control panel defined on the front of the television, and includes a power button for performing a power on / off function or a volume level. Volume up / down button for adjusting the volume, 10-key (10a) for direct channel selection or channel multicasting of the channel assumed in the present invention, and for adjusting the TV broadcasting channel and the text multicasting channel. And a channel up / down button 10b and a channel registration button 10c for registering a channel for the text multicast signal.

Reference numeral 12 is a control unit for controlling the overall function of the television in response to the control signal input from the control signal input unit 10, in the present invention, the control unit 12 is the character multi-broadcast signal of the channel registration mode is set Various OSD screens for guiding channel registration are output on the CRT of the television, and channel up / down is adjusted so that the channel assigned to the character multicast signal registered as a specific channel is adjusted. Controls the whole device to perform the character multicast function.

Reference numeral 14 denotes a channel data storage for storing channel data (VT) for channel selection, and 16 denotes display of character information for function control specified by the control signal input unit 10. Under the control of the control unit 12, the OSD processing unit for generating an OSD text signal for the OSD screen for the channel registration guide when setting the channel registration mode for the text multi-broadcast signal.

Reference numeral 18 is a tuner that tunes a broadcast signal for a specific channel among broadcast signals received through the antenna based on the channel data VT supplied from the controller 12.

In FIG. 1, reference numerals 20, 22, and 24 denote voice signal processing means for reproducing a voice signal for a specific channel tuned by the tuner 18, and reference numeral 20 denotes the tuner 18 through the tuner 18. FIG. A voice IF module which amplifies an IF signal of a broadcast signal of a tuned channel and detects only a voice signal from the amplified IF signal, and 22 denotes a voice signal output from the voice IF module 20 by the control signal input unit 10. Is a voice processing ratio unit for processing the voice signal under the control of the control unit 12 when the TEXT mode is set, as well as processing in a voice processing mode such as sound wave adjustment, voice surround, or voice multiplexing. A voice amplifier which amplifies the voice signal output from the voice signal processor 22 at a predetermined amplification rate and then outputs the amplified voice signal through a speaker SP 26 connected to the rear stage.

Reference numerals 28, 30, 34, and 36 denote video signal processing means for reproducing a video signal for a channel tuned by the tuner 18, and reference numeral 28 denotes a tuned through the tuner 18. A video IF module that amplifies an IF signal of a broadcast signal of a channel and then detects only a video signal among the amplified IF signals, and 30 denotes a video signal output from the video IF module 28 by the control signal input unit 10. A video signal processor for outputting an R / G / B signal according to an image related function such as brightness / contrast adjustment or OSD text signal for the control signal generated by the OSD processor 16 on the screen. Further, reference numeral 32 denotes a TEXT signal included in the image intermediate frequency signal output from the image IF module 28 and transmitted, and then processes the detected TEXT signal into a text signal, thereby R / G / B signal. A character decoder for outputting the signal, and 34 denotes a CRT by receiving the R / G / B signals output from the image signal processor 30 and the character decoder 32 and performing a switch operation under the control of the controller 12. An RGB switching unit for outputting an R / G / B signal for an image signal outputted on (38), and 36 amplifies the video signal output from the RGB switching unit 34 at a predetermined amplification ratio and amplifies the An image amplifier for outputting a video signal through a video output device (CRT) 36 connected to the rear stage.

Further, reference numeral 40 denotes data on a channel assigned to text multicasting when the channel registration mode is set under the control of the control unit 12, for example, a TEXT channel (channel on which TEXT data is transmitted) and data about a channel to be registered. Is an EPROM as a recordable updateable storing means, and 42 is a timer for providing predetermined time data.

Next, the operation of the present invention will be described in detail with reference to the flowchart shown in FIG.

First, when the power of the television (TV) is turned on (step 50), the control section 12 determines whether the channel registration mode is set (step 52).

As a result of the determination, if the channel registration mode is not set (NO in step 52), the control unit 12 performs a reproduction processing operation for the normal TV broadcast signal (step 54), that is, in step 54 the control signal input unit ( 10) If a key signal is inputted according to a specific channel selection, the control unit 12 reads out the corresponding key signal and reads out the channel data VT for the selected channel from the channel data storage unit 14 to tuner 18. ) Is applied. The tuner 18 receiving the channel data VT from the control unit 12 performs a channel tuning operation based on the channel data VT so that a specific channel is tuned to the tuner 18. The broadcast signal of the channel tuned by the channel is converted into an audio intermediate frequency signal and an image intermediate frequency signal by the audio IF module 20 and the video IF module 28, respectively, and applied to the audio signal processor 22 and the video signal processor 30. It is done. The voice signal processor 22 receiving the voice signal from the voice IF module 20 processes the voice signal according to the voice surround or voice multiple and volume adjustment states set by the control signal input unit 10. The voice signal is amplified by the voice amplifier 24 to be amplified to a predetermined value. The voice signal amplified by the voice amplifier 24 is reproduced and output through the speaker SP.

In addition, the image signal processor 30 receiving the image signal from the image IF module 28 performs the image processing according to the luminance / contrast / color / tint set by the control signal input unit 10. Therefore, the corresponding R / G / B signal is applied to the RGB switching unit 34. The R / G / B switching unit 34 is applied from the image signal processing unit 30 under the control of the control unit 12. Performs a switch operation on the R / G / B signal of the video signal of the TV broadcast signal and applies the corresponding R / G / B signal to the video amplifier 36 connected to the rear stage to amplify the corresponding video signal to a predetermined value. And then reproduced output via the CRT 38.

On the other hand, if the channel registration mode is set for the television as the viewer operates the channel registration button 10c configured in the control signal input unit 10 (YES in step 52), the control unit 12 is placed on the CRT 38. As shown in FIG. 3, the OSD text signal for configuring the OSD screen is controlled by controlling the OSD processing unit 16 to display an OSD screen for guiding a TEXT channel (that is, a channel through which TEXT data is transmitted). To be generated (step 56).

Then, the control unit 12 determines whether the TEXT channel is input through the control signal input unit 10 in response to the OSD screen displayed on the CRT for inputting the TEXT channel (step 58). If the non-input status of the channel is determined (NO in step 58), it is determined whether the predetermined time has elapsed by performing a timekeeping operation based on the time data applied from the timer 42 (step 60). If the resultant TEXT channel is not input within a predetermined time period (YES in step 60), the channel registration mode set in step 52 is automatically canceled and then returned to the initial state.

On the contrary, when the viewer presses a predetermined button, e.g., 9 of the 10-key 10a configured in the control signal input unit 10 to input the TEXT channel through the control signal input unit 10 (YES in step 58). The control unit 12 controls the OSD processing unit 16 to configure the OSD screen so that the OSD screen for registration channel input is displayed on the CRT 38 as shown in (b) of FIG. 3. The OSD text signal is generated (step 64).

Subsequently, the control unit 12 determines whether a registration channel is input through the control signal input unit 10 in response to the OSD screen displayed on the CRT for inputting the registration channel (step 66). When the non-input status is determined (NO in step 66), it is judged whether or not a predetermined time has elapsed by performing a timekeeping operation based on the time data applied from the timer 42 (step 68). If the registration channel is not input within a predetermined time period (YES in step 68), the channel registration mode set in step 52 is automatically released and then returns to the initial state.

On the other hand, when a predetermined channel of the 10-key 10a configured in the control signal input unit 10, for example, 10, is operated by the viewer to input a registration channel through the control signal input unit 10 (YES in step 66). The controller 12 assigns the channel 10 input in step 66 to the character multicasting transmitted to the channel 9 input in step 58, and stores a series of data in the EPROM 40, and then registers the channel. End the process.

If the viewer adjusts the channel using the channel up / down button 10b configured in the control signal input unit 10 in the state in which the channel registration for the text multicasting is completed (step 74), the controller ( 12 determines whether the channel adjusted by the control signal input unit 10 is a registered channel in the TEXT channel (the channel through which the text multi-broadcast signal is transmitted) (step 76), and by the control signal input unit 10. If the channel is adjusted to the '10' channel and the corresponding channel is determined to be a channel registered in the TEXT channel (YES in step 76), the control unit 12 channels the channel data VT corresponding to the TEXT channel, for example, the '9' channel. After reading from the data storage unit 14, the channel data VT is applied to the tuner 18 so that the TEXT channel, that is, the '9' channel, is tuned (step 78).

Subsequently, the control unit 12 automatically sets the TEXT mode (step 80), and then detects the TEXT data among the image signals output from the image IF module 28 through the character decoder 32 and processes the corresponding TEXT data into text processing. To output the corresponding RGB signal and to perform the switching operation so that the RGB switching unit 34 applies the RGB signal output from the character decoder 32 to the image amplifying unit 36. Through 38, the function according to the text multiplexing is performed (step 82). In addition, the controller 12 controls the voice signal processor 22 to mute the voice signal.

If the viewer adjusts the channel by operating the channel up / down button 10a configured in the control signal input unit 10 in the process of performing the text multicasting function (step 84), the controller 12 In step 76, the process of determining whether the channel adjusted by the channel up / down button 10a is a registered channel in the TEXT channel is repeated.

On the contrary, if the channel adjusted by the channel up / down 10a in step 76 is not a channel registered to the TEXT channel, for example, when the viewer adjusts to the '9' channel, The channel data is read from the channel data storage 14 and applied to the tuner 18 so that the corresponding channel is tuned (step 86).

Subsequently, the control unit 12 automatically sets the TV mode (step 88), and the R / G / B signal of the video signal corresponding to the TV broadcast signal output from the video signal processing unit 30 is converted into the RGB switching unit ( Control the RGB switching unit 34 so as to be applied to the image amplifying unit 36 by the switch operation of step 34) so that playback processing for the normal TV broadcast signal described above in step 54 is performed (step 90). Proceed to step 74.

As described above, according to the text mode setting method of a television having a text multicast reception function according to an embodiment of the present invention, a viewer includes a specific channel number for a text multicast signal including a video signal of a predetermined channel. When the viewer selects the channel number by operating the channel up / down button, it automatically switches to the TEXT mode and automatically tunes to the channel where the corresponding character multicast signal is being transmitted. Will be.

In addition, even if the viewer wants to watch a TV broadcast while watching the text multicasting, if the channel to be watched is operated by the channel up / down button, the channel is automatically switched to the TV mode and the tuning operation for the corresponding channel is performed. To watch TV broadcasts.

Therefore, when the viewer sets the function for the TV mode and the TEXT mode or changes the function, the viewer can easily watch the object in the TV mode or the TEXT mode without the hassle of having to manually operate a plurality of buttons accordingly. You can change the selection.

Claims (3)

A tuner 18 for tuning a specific channel, voice signal processing means 20, 22, 24 for reproducing and processing a voice signal of the broadcast signals of the channel tuned in the tuner 18, and tuning in the tuner 18 Video signal processing means (28, 30, 34, 36) for reproducing and processing the video signal among the broadcast signals of the received channel, and the TEXT data transmitted in the video signal of the predetermined channel is detected and processed as the text signal. In the character multicast television comprising a character decoder 32, a specific channel is registered for the character multicast signal transmitted in the video signal of a predetermined channel, and the control signal input unit 10 in the TV mode is used. When a channel registered as the specific channel is selected, the channel in which the text multicast signal according to the specific channel is transmitted is automatically tuned and then automatically switched to the TEXT mode to process the text processed by the text decoder 32. A text mode setting method for a television having a text multicast receiving function, characterized in that text information on a signal is reproduced and output through a CRT (38). The apparatus of claim 1, wherein when a channel for TV broadcasting is selected in the TEXT mode, the channel is automatically tuned and then automatically switched to the TV mode so that the video signal and the audio signal for the TV broadcasting signal are connected to the speaker (SP) 26. A text mode setting method for a television having a character multiple broadcast reception function, which is reproduced and output through a CRT (38). The method of claim 1, wherein when setting a registration mode, an OSD screen for channel registration guidance is displayed, and when data for channel registration is input in response to the OSD screen, the corresponding data is stored in the data storage means (14) for text multicasting. A text mode setting method for a television having a character multicasting reception function, characterized by registering a specific channel for a signal.