KR0152815B1 - Apparatus and method for channel tuning of television - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel channel selection apparatus and method of a television, and in particular, when two or more broadcasts of the same channel are received upon reception of a television broadcast, the display is displayed on a screen in the form of a picture in picture (PIP) so that the viewer can see them. The present invention relates to a channel channel tuning apparatus and method for easily selecting and storing an optimal screen. In the characteristic of a region, the same broadcast signal is frequently received through several channels. It is not equipped with the function of comparing and judging when a signal is received, and it remembers all channels where a broadcast signal exists unconditionally, and remembers the channel number which is better according to the viewer's judgment. Difficult to choose, up / down After checking the broadcasting channel desired by using the key, there is a troublesome problem of proceeding in the desired direction. However, in the present invention, when two or more channels of the same broadcasting station name exist by recognizing the broadcasting station name through the KBPS signal, the channels are avoided. The user can select the optimal screen to tune the channel by displaying it on the IP screen, and the simplicity of channel tuning is increased. By adding the channel guide key, the displayed station name and the corresponding channel are selected to display the corresponding screen. By showing through the PIP screen, the viewer can recognize the reception state to have an effect of tuning the channel.

Description

Channel tuning device and method of TV

1 is a block diagram of a typical television receiver.

2 is a block diagram showing a channel selecting apparatus of the present invention television.

3 is a flowchart showing a channel selecting method of the present invention television.

4 is a diagram showing the configuration of the memory inside the memory of FIG.

5 is a configuration diagram of a KBPS signal.

6 is a configuration diagram of a KBPS packet data format into which a broadcasting station name is input.

7 is a view showing another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: first tuner 11: intermediate frequency processing unit

12: second tuner 13: PIP processing unit

14: remote control 15: infrared receiver

16: data slice section 17: memory

18: microcomputer 19: chroma unit

20: Citi

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel channel selection apparatus and method of a television, and in particular, when two or more broadcasts of the same channel are received upon reception of a television broadcast, the display is displayed on a screen in the form of a picture in picture (PIP) so that the viewer can see them. The present invention relates to a channel channel selection apparatus and method for television, which makes it possible to easily select and memorize an optimal screen.

FIG. 1 is a block diagram of a general television receiver, as shown therein, a tuner 1 which extracts audio and video frequencies by processing a high frequency signal received through an antenna ANT, and is output from the tuner 1. An intermediate frequency processing unit 2 for processing an image intermediate frequency to restore an original video signal Vi, and processing an audio intermediate frequency to restore an original audio signal Au, a remote controller 3 and an infrared receiver 4 The tuner 1 is controlled according to a viewer's control command inputted through) so that the channel desired by the viewer is tuned, and the microcomputer 5 collectively controls the system, and is output from the intermediate frequency processor 2. It is composed of a chroma unit 6 which receives a video signal Vi and processes it to be suitable for display on the Citi 7. The operation of the television receiver configured as described above is as follows.

When the channel is to be tuned, the viewer tunes the channel by using the number keys 0 to 9 or the channel up / down key (△ / ∇) provided on the remote controller 3, and when the number key is pressed, the microcomputer (5) recognizes the currently selected channel through the infrared receiver 4 and outputs the tuning data of the recognized channel to the tuner 1 so that the corresponding channel is tuned.

Accordingly, the broadcast signal received through the antenna ANT is supplied to the tuner 1, and the audio and video intermediate frequencies of the tuned channel are extracted, and then supplied to the intermediate frequency processing unit 2, thereby providing the original video signal Vi and audio. Since the signal Au is restored, and the restored video signal Vi is supplied to the chroma unit 6 and processed in a form suitable for display on the C7, the viewer is displayed on the C7. You can watch the broadcast program of the channel you selected.

When the channel is selected using the channel up / down key, each time the key is pressed, the channel is skipped to the next channel already stored in the current channel. For example, channels 2, 10, and 20 are used. If the channel up key is pressed while channel 10 is currently stored, channel 20 is tuned, and channel 2 is tuned when the down key is pressed.

However, due to regional characteristics, the same broadcast signal is frequently received through several channels. In the general automatic channel tuning system as described above, there is no broadcast signal because there is no function of comparing and determining when the same broadcast signal is received. After all the channels are remembered, the viewer deletes the same channel and it takes a lot of time and it is difficult to select a good channel. There was a cumbersome problem to proceed to.

Accordingly, the present invention has been made in view of the above-mentioned problems, and when two or more broadcasts of the same channel are received, the present invention is displayed on the screen in the form of a PIP so that the viewer can easily select and store the optimal screen while viewing the same. As it exists, the present invention having such an object will be described in detail.

In order to achieve the above object, the present invention provides a first process of searching for all received channels and storing them in a memory when an automatic channel setting command is input, and among the channels stored in the memory by the first process, If two or more are stored in duplicate, the second process of displaying the channel on the screen in the form of IP, and if the best screen among the channels displayed on the screen in the form of IP by the second process is selected by the user, The third step is to erase other channels from memory.

On the other hand, in the first process, when the automatic channel setting command is input, the automatic channel setting mode is entered into a first step of increasing the received channel by one channel, and when the channel is increased by one channel by the first step, tuning thereof. The second step of tuning the channel by data and whether the broadcast signal is included in the channel tuned by the second step is determined. If the broadcast signal is included, the broadcasting station name data is read and the broadcasting station name is written in the corresponding channel. And determining whether all channels received after performing the third step have been searched. If all channels have been searched, the automatic channel setting mode is canceled; Is done.

In addition, as shown in FIG. 2, the apparatus for realizing the above-described method comprises the microcomputer 18 when the automatic channel setting command is input from the viewer through the remote controller 14 and the infrared receiver 15. The first tuner 10 and the second tuner 12 for processing the high frequency signal received by the tuning control signal of the audio and video frequency, and the image intermediate frequency output from the first tuner 10 To restore the original video signal Vi, to process the audio intermediate frequency, to restore and output the original audio signal Au, and to output the video signal output from the intermediate frequency processor 11. A data slice unit 16 which detects and outputs the broadcast station name data inserted into (Vi), and receives the broadcast station name data detected by the data slice unit 16, writes it in a corresponding channel, and stores the same in the memory 17; next, When two or more channels of one broadcasting station are duplicated, the station name data corresponding to the channel is read from the memory 17 and output to the IP processing unit 13, and the channel is tuned to the second tuner 12. If a channel is selected from the viewer after outputting the control signal, the microcomputer 18 re-storing only the selected channel in the memory 17 by deleting other duplicated channels and controlling the system as a whole. A memory 17 storing a channel in which a broadcasting station name is written, and an image frequency of the corresponding channel is input from the second tuner 12 by the broadcasting station name data output from the microcomputer 18. Receives the outputs of the IP processing unit 13 and the intermediate frequency processing unit 11 and the IP processing unit 13 and outputs them to the control signal of the microcomputer 18. It is composed of a chroma unit 19 to be processed to be suitable for display on the Citi 20, the operation and effect of the present invention configured as described above will be described in detail with reference to FIGS.

When the automatic channel setting command is input from the viewer to the microcomputer 18 through the infrared receiver 15 through a specific key of the remote controller 14, the microcomputer 18 outputs a tuning control signal and the tuning control signal. The first tuner 10 extracts the audio and video frequencies from the high frequency signal input through the antenna ANT and outputs them to the intermediate frequency processor 11.

The intermediate frequency processor 11 restores the original audio signal Au and the video signal Vi from the input audio and video frequencies, and outputs the original audio signal Au and the data slice 16 and the chroma 19 to the data slice unit 16. The slice unit 16 slices a KBPS (Korean Broadcasting Programable System) signal (shown in FIG. 5) included in the input video signal Vi, thereby broadcasting the broadcast station name in the KBPS packet data format as shown in FIG. Data is extracted. Usually, the KBPS signal shown in FIG. 5 is inserted in the 16th line of one video signal field, and is composed of seven 503 sine waves and 16 bits of data to match the data slice sampling period.

On the other hand, the KBPS packet data format shown in FIG. 6 consists of nine words P-1 to P-9 (18 bytes), where the first word P-1 is two bytes of start data, The next four words (P-2 to P5) and three words (P-6 to P-8) are used to select the central broadcasting stations (eg MBC, KBS1, KBS2, etc.) and local broadcasting stations (Andong MBC, Daegu MBC, etc.). This is the data that informs the Korean complete KSC-5601 code data. The last word (P9) consists of the data that indicates the end of the packet.

As a result, the KBPS packet data extracted from the data slice unit 16, that is, the broadcast station name data, is input to the microcomputer 18 so that the broadcast station name is written in the corresponding channel and stored in the memory 17.

In addition, the microcomputer 18 reads out two or more duplicated channels among channels in which the broadcasting station names stored in the memory 17 are written, and outputs a tuning control signal to the second tuner 12 for the channel. The two tuners 12 output the image frequencies for two or more overlapping channels to the IP processing unit 13, and the IP processing unit 13 processes the video frequencies in the form of a PI, thereby providing a chroma unit 19 ), The duplicated channel on the screen through the Citi 20 is displayed as a PIP screen.

When the user selects an optimal screen while viewing the PIP-type screen displayed on the screen, the microcomputer 18 recognizes this and deletes channels other than the channel of the selected screen so that only the channel of the most optimal screen is stored in the memory 17. Will be stored in.

This process is described with reference to FIG. 4 as an example.

The microcomputer 18 reads the broadcasting station name data stored in the memory 17 and outputs the corresponding tuning control signal to the second tuner 12, wherein the memory 17 as shown in FIG. If there are three channels (No. 4, 6, 48) having the name of the broadcasting station of KBS2, the microcomputer 18 recognizes this and applies the tuning control signals for the three channels to the second tuner 12. The IP processing unit 13 outputs the broadcasting station name data to finally display the screen as shown in FIG. 4B through the CPT 20.

At this time, when the viewer selects the best screen 2, that is, channel 6, through the specific key (numeric keys) of the remote controller 14, the microcomputer 18 recognizes this and shows the result as shown in FIG. Channels 4 and 48 having the same broadcast station name other than the selected channel are deleted and stored in the memory 17.

7 is another embodiment of the present invention, when a channel guide key is assigned to a remote controller and the key is pressed, a station name, a channel thereof, and a PIP screen as shown in FIG. 7 are displayed and a channel up / down key is shown. If you select the channel you want to watch with (△ / ▽), the screen is displayed in the form of PI so that viewers can easily and easily tune in while watching it.

As described above, the present invention recognizes a broadcasting station name through a KBPS signal and displays two or more channels of the same broadcasting station name on the IP screen so that the user selects an optimal screen to select a channel. Hyogo's simplicity of channel selection increases, and by adding a channel guide key, the displayed station name and the corresponding channel are selected and the corresponding screen is shown on the PIP screen so that viewers can recognize the reception state to confirm the channel. Tuning is effective.

Claims (5)

When the automatic channel setting command is input, the first process of searching for all received channels and storing them in the memory; and if two or more channels of the same broadcasting station are duplicated among the channels stored in the memory according to the first process, the channels are avoided. A second process of displaying on the screen in the form of an IP; and if the best screen is selected by the user from the channels displayed on the screen in the form of an IP, the second process of erasing other channels of the same broadcasting station from the memory. A channel selecting method for television, characterized by three steps. The method of claim 1, wherein the first process comprises: a first step of increasing the received channel by one channel when the automatic channel setting command is input, and increasing the received channel by one channel; In this case, if the broadcast signal is included in the second step of tuning the channel according to the tuning data and the channel tuned by the second step is included, and the broadcast signal is included, the station name is read in the corresponding channel. Determining whether all channels received after performing the third step have been searched and canceling the automatic channel setting mode if all channels have been searched, otherwise continuing to search the remaining channels. 4. A channel tuning method for television, comprising the fourth step. A first step of searching for all the received channels and storing the same in a memory; a second step of displaying the names of channels and broadcasting stations stored in the memory and the corresponding PIP screens when the channel tuning command is input; And a third process of displaying a screen on the full screen when the user selects a channel to be watched among the channels displayed by the second process. 4. The method of claim 3, wherein the PIP screen displayed by the second process displays only the screen corresponding to the selected channel. When an automatic channel setting command is input from a viewer through a remote controller, a first tuner and a second tuner for processing a high frequency signal received by a tuning control signal of a microcomputer and extracting audio and video frequencies, and outputting from the first tuner. An intermediate frequency processing unit for processing the video intermediate frequency to restore the original video signal, and processing the audio intermediate frequency to restore and output the original audio signal, and broadcasting station name data inserted in the video signal output from the intermediate frequency processing unit. The data slice unit detects and outputs the data, and the broadcasting station name data detected by the data slice unit is input, stored in the corresponding channel, and stored in the memory. The station name data is read from the memory and output as a PIP signal, and the second A microcomputer for totally controlling the system by restoring only the selected channel in memory by deleting other duplicated channels of the same broadcasting station after the channel is selected from the viewer after outputting a control signal for tuning the channel to you; A memory for storing a channel having a broadcast station name written therefrom and a video processing unit for receiving the image frequency of the corresponding channel by the broadcast station name data output from the microcomputer and processing the same in the form of a PI. And a chroma unit which receives the outputs of the intermediate frequency processing unit and the IP processing unit and processes them to be suitable for display on the Citi by the control signal of the microcomputer.