KR19990066523A - How to delete channel of composite broadcast receiver - Google Patents

Abstract

The present invention deletes a CATV channel by using a CATV channel guide screen without inputting a channel number for a corresponding channel when a desired CATV channel is to be deleted in a composite broadcast receiver capable of receiving a CATV broadcast signal and a satellite broadcast signal. The present invention relates to a channel deletion method of a composite broadcast receiver that can provide convenience according to a process. The present invention includes a first step of displaying a channel guide screen including a plurality of cable broadcasting channels; A second step of displaying a channel deletion menu screen when a key signal for deleting the selected channel is input after selecting a broadcast channel; A third step of tuning a broadcast signal of the input channel for display for a predetermined time and displaying the channel deletion menu screen again when a broadcast state confirmation key signal for the selected channel is input; A fourth step of updating the plurality of pre-registered cable channel information with the channel information from which the information on the selected channel is deleted when the delete approval key signal for the selected channel is input; And a fifth step of displaying a channel guide screen based on the updated cable channel information.

Description

How to delete channel of composite broadcast receiver

The present invention relates to a composite broadcast receiver, and more particularly, to a channel deletion method of a composite broadcast receiver suitable for a user to effectively delete any channel among a plurality of channels registered in the composite broadcast receiver.

A general broadcast method using satellites is a method of providing a broadcast signal to a wider area by using a satellite (communication satellite) located at an altitude of about tens to hundreds of kilos on the earth's surface. Ku band RF signals having a frequency band of 11.7 GHz to 12.0 GHz are used.

To this end, the antenna for satellite broadcasting reception is provided with a low noise blockdown converter for converting a radio frequency (RF) signal of a very high frequency into an intermediate frequency (IF) signal, and the low noise converter converts an ultra high frequency RF signal. It converts into an IF (intermediate frequency) signal in the hundreds to thousands of MHz bands (for example, 950 MHz-2050 MHz) that can be received by a satellite broadcasting receiver (receiver).

Therefore, in the satellite broadcasting tuner provided in the satellite broadcasting receiver (receiver), the user selects and tunes a channel selected by inputting an IF signal received through a low noise converter. The satellite broadcasting receiver maximizes channel utilization, video and audio signals. Along with the improvement of quality and the ease of transmitting additional digital service data, the significant improvement of the user interface is a big advantage.

In recent years, as well as satellite broadcasting, CATV broadcasting using cable has been rapidly spreading. If a subscriber (ie, one receiver) wants to receive all of these broadcasting signals, the frequency band of each broadcasting is used. Because of this difference, a satellite tuner, a cable tuner, and a terrestrial tuner will all need to be equipped separately.

Accordingly, in order to accommodate various types of broadcasts as described above, various types of internal or external tuners may be provided, or each type of broadcast may have a separate signal processing path (that is, a satellite broadcast signal processing path and a cable broadcast signal). It may be considered that the receiver employs an integrated complex tuner for processing through a processing path, but this causes not only an unnecessary increase in hardware of the receiver itself, but also an excessive increase in the cost of the receiver. Is caused.

On the other hand, in view of the above, a complex tuner capable of simultaneously receiving a satellite broadcast signal, a cable broadcast signal, and a terrestrial broadcast signal through a single tuning path has been developed. It is also being developed.

The composite broadcast receiver controls the passband of the received signal and tunes the bandpassed signal based on the user selection signal when the satellite broadcast signal or the cable broadcast signal is received at the input side, and in accordance with the tuned signal and the user selection. Tuning the corresponding channel of the desired broadcast signal by mixing the oscillating frequencies generated, and the tuned signals are provided to corresponding demodulators through separate signal processing paths (BS path, DSR path, CATV path) respectively provided It is.

Meanwhile, the general composite broadcast receiver detects and stores each valid channel to which an actual broadcast signal is input among a plurality of channels provided to the receiver, and then tunes a broadcast signal of a corresponding channel based on the channel switching signal of the user. When a user wants to delete an arbitrary channel among a plurality of valid channels stored in a conventional composite broadcast receiver or a satellite broadcast receiver, a channel desired by the user is deleted using a channel deletion menu as shown in FIG. 4. Done. That is, after the channel number to be deleted is input, the 'Delete' button is input again to delete the corresponding channel.

However, in the conventional deletion process, there is an inconvenience in that the user directly inputs a channel number to be deleted, and there is a problem in that the actual broadcasting state of the channel to be deleted can not be directly checked in the channel deletion menu screen.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, the user can select and delete an arbitrary channel by using a channel guide screen instead of a separate channel deletion menu screen for channel deletion of the composite broadcast receiver, It is an object of the present invention to provide a method for deleting a channel of a composite broadcast receiver that can delete a channel after checking the actual broadcast state of the channel to be deleted.

In order to achieve the above object, the present invention includes a satellite broadcast processing path for processing a plurality of satellite broadcast channels tuned through a composite tuner and a cable broadcast processing path for processing a plurality of cable broadcast channels tuned through the composite tuner. A method for deleting any broadcast channel among the plurality of broadcast channels in a composite satellite broadcast receiver, wherein when a guide screen key signal for a plurality of cable broadcast channels pre-registered in the composite broadcast receiver is input, the plurality of cables A first step of displaying a channel guide screen including a broadcast channel; A second step of displaying a channel deletion menu screen when a key signal for deleting the selected channel is input after selecting a broadcast channel among the plurality of cable broadcast channels; A third step of, when a key signal for confirming a broadcast state of the selected channel is input, tunes the broadcast signal of the input channel for display for a predetermined time period, and displays the channel deletion menu screen again; A fourth step of updating the plurality of pre-registered cable channel information to the channel information from which the information on the selected channel is deleted when a delete approval key signal for the selected channel is input from the channel deletion menu screen; And a fifth step of turning off the channel deletion menu screen and displaying a channel guide screen based on the updated cable channel information.

1 is a block diagram of a composite broadcast receiver suitable for applying a channel deletion method of a composite broadcast receiver according to an embodiment of the present invention;

2 is a flowchart illustrating a channel deletion process of a composite broadcast receiver according to an embodiment of the present invention;

3 is a view for explaining a channel deletion method of a composite broadcast receiver according to an embodiment of the present invention;

4 is a view for explaining a channel deletion method in a conventional composite broadcast receiver.

<Description of the code | symbol about the principal part of drawing>

105: key input unit 110: control unit

115: tuner and demodulator 120: MPEG decoder

125: video encoder 130: NTSC processing unit

135: memory 140: OSD

145: switching unit 150: image synthesizing unit

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 composite broadcast receiver suitable for applying a channel deletion method of a composite broadcast receiver according to an exemplary embodiment of the present invention, and includes a key input unit 105, a controller 110, a tuner, and a demodulator 115. , An MPEG decoder 120, a video encoder 125, an NTSC processor 130, a memory 135, an OSD unit 140, a switching unit 145, and an image synthesizer 150.

Referring to FIG. 1, the key input unit 105 is composed of key metrics on a remote controller or its own panel to generate a corresponding key signal by a user's operation and provide the corresponding key signal to the controller 110, and the controller 110 receives the received signal. A microprocessor that performs overall operation control of the system. When a user broadcast channel selection signal (ie, an operation signal) is input from the key input unit 105, a microcontroller generates a tuning control signal corresponding thereto, and the tuner and demodulator 115 described below. ) Will be provided.

The tuner and demodulator 115 is a broadcast channel selected by a user in a broadcast signal received through a broadcast signal receiver (i.e., antenna, cable, etc.), not shown, based on a tuning control signal provided from the controller 110. And demodulate the tuned broadcast channel signal into the original signal before transmission. When the satellite broadcast signal is tuned, the demodulated satellite broadcast channel signal is provided to the MPEG decoder 120, and the cable broadcast signal or the terrestrial broadcast signal is When tuned, the demodulated broadcast channel signal is provided to the NTSC processor 130.

That is, the tuner and demodulator 115 is composed of a composite tuner capable of receiving and tuning all satellite broadcast signals, CATV broadcast signals, and terrestrial broadcast signals provided through an antenna or transmission path, not shown.

The MPEG decoder 120 restores the compressed coded video signal of the tuned satellite broadcast channel provided by the tuner and demodulator 115 to the original signal before encoding, and the digital video signal reconstructed here To video encoder 125.

Next, the video encoder 125 converts the tuned digital video signal provided by the MPEG decoder 120 described above into an NTSC or PAL analog video signal and then provides it to the switching unit 145.

Meanwhile, the NTSC processor 130 processes the tuned analog video signal (a cable broadcast signal or a terrestrial broadcast signal) provided by the tuner and the demodulator 115, for example, level amplification, noise cancellation, gain control, and the like. Various signals are processed and provided to the switching unit 145.

The memory unit 135 stores data on various menu screens and additional information screens and channel information (including all valid channel information), and sends a message or a guidance screen to a monitor not shown, when the OSD is requested. The data is extracted and provided to the OSD unit 140 through the controller 110.

The OSD unit 140 configures OSD screen data based on the vertical and horizontal sync signals generated for setting the position of the OSD data to be transmitted when the OSD data is provided from the controller 110. The OSD screen data is provided to the switching unit 145 through the mixer.

On the other hand, the switching unit 145 is provided from the control unit 110 to provide a video signal output of the tuned cable or terrestrial broadcast (or a mixed video signal mixed with OSD data) and the video signal output of the tuned satellite broadcasting channel. The switch is selectively switched based on the switching control signal and provided to the image synthesizing unit 150.

In addition, the image synthesizing unit 150 synthesizes a satellite broadcasting signal or CATV broadcasting signal selectively output from the switching unit 145 and various menu screens and guide screens provided from the OSD unit 140 and displays a display side (not shown). Display on the screen.

2 is a flowchart illustrating a channel deletion process of a hybrid broadcast receiver according to a preferred embodiment of the present invention, which will be described in detail with reference to the accompanying drawings.

The operation of the composite broadcast receiver as shown in FIG. 1 performs a CATV from the key input unit 105 during the normal viewing mode in which an arbitrary broadcasting channel selected by a user is tuned and displayed on a screen through a predetermined signal processing process (step 201). When a key signal for displaying the entire channel guide screen for the broadcast is input (step 203), the controller 110 displays information on various channel guide menu screens stored in the memory unit 135 and the CATV broadcast registered in the composite broadcast receiver. Valid channel information of is read (step 205).

Subsequently, the controller 110 provides each read information to the OSD unit 140, and the OSD unit 140 transmits CATV channel information to FIG. 3A based on the menu screen information provided from the controller 110. FIG. The display screen as shown in the figure is configured to be displayed through the image synthesizing unit 150 (step 207).

Meanwhile, the CATV channel guide screen displayed at this time is displayed including a plurality of function menus (channel search, channel name change, channel addition, channel deletion) for the CATV channel as shown in FIG. 3A. Displayed includes a function cursor for the channel and a channel cursor for selecting the CATV channel.

That is, the function cursor only moves left and right based on the key signal input by the user to select each function menu, and the channel cursor only moves up and down to select a specific channel selected by the user. do.

Meanwhile, when the CATV channel guide screen as described above is displayed, the user operates the key input unit 105 to move the channel cursor up and down, selects an arbitrary channel, and uses the function cursor again to delete the channel. When a signal is input (step 209), the controller 110 reads out the channel deletion menu screen information stored in another predetermined area of the memory unit 135 and provides the same to the OSD unit 140.

In addition, the OSD unit 140 displays and displays the channel deletion menu screen information as a menu screen as shown in FIG. 3B. The channel deletion menu screen is displayed by the user as shown in FIG. The CATV channel number selected using the channel cursor and another function menu (channel check, delete, cancel) are superimposed and displayed on the channel guide screen currently displayed on the screen (step 211).

If the 'channel check' key signal is input through the key input unit 105 while the channel deletion menu screen as shown in FIG. 3B is displayed through the above-described process (step 213), the controller 110 The channel guidance screen and the channel deletion menu screen displayed on the screen are temporarily turned off, and the corresponding channel (the channel selected by the channel cursor) is tuned and displayed on the screen for a predetermined time (for example, 5 seconds) (step) 215). That is, the user can check the actual broadcasting state of the channel to be deleted by using the 'channel check' item displayed on the channel delete menu screen.

Meanwhile, the controller 110 displays the broadcast signal for the channel to be deleted for a predetermined time through the above step 215 and then drives the OSD unit 140 again to display the channel guide screen as shown in FIG. The Delete Channel menu screen is displayed.

Subsequently, the process subsequent to the above-described step 213 is repeated, and when a key signal for selecting a 'delete' item for deleting the corresponding channel is input instead of the 'channel check' item (step 217), the controller 110 deletes the channel information from the information on all the channels of the CATV stored in the memory unit 135 (step 223).

On the contrary, if the 'cancel' item is selected instead of the 'delete' item in the above-described step 217 or a predetermined time elapses without input of another specific key signal (step 219), the controller 110 deletes the channel. After the menu screen is turned off (step 221), step 207 is repeated to return to the CATV channel guide screen as shown in FIG. 3A.

Meanwhile, when the channel selected by the user is deleted from the total CATV channel information stored in the memory unit 135 through the above-described step 223, the controller 110 turns off the channel deletion menu screen displayed on the current screen (step 225). The updated CATV channel guide screen is displayed except for the deleted channel (step 227).

As described above, according to the present invention, when a user wants to delete an arbitrary channel among a plurality of channels registered in the composite broadcast receiver, the user can easily delete the channel without inputting a channel number for the corresponding channel, thereby providing convenience for the user. There is an effect to improve the, and since the user can directly check the broadcast status of the channel, there is an effect that can improve the overall function of the composite broadcast receiver.

Claims (2)

The plurality of broadcasts in a composite satellite broadcast receiver having a satellite broadcast processing path for processing a plurality of satellite broadcast channels tuned through a complex tuner and a cable broadcast processing path for processing a plurality of cable broadcast channels tuned through the complex tuner. In the method of deleting any broadcast channel of the channel, A first step of displaying a channel guide screen including the plurality of cable broadcast channels when a guide screen key signal for a plurality of cable broadcast channels registered in the composite broadcast receiver is input; A second step of displaying a channel deletion menu screen when a key signal for deleting the selected channel is input after selecting a broadcast channel among the plurality of cable broadcast channels; A third step of, when a key signal for confirming a broadcast state of the selected channel is input, tunes the broadcast signal of the input channel for display for a predetermined time period, and displays the channel deletion menu screen again; A fourth step of updating the plurality of registered cable channel information to the channel information from which the information on the selected channel is deleted when the delete approval key signal for the selected channel is input from the channel deletion menu screen; And off the channel deletion menu screen and displaying a channel guide screen based on the updated cable channel information. The method of claim 1, wherein in the fourth step, when the delete cancellation key signal for the selected channel is input or another specific key signal is not input for a predetermined time, the channel deletion menu screen is turned off and the channel guide screen is displayed. The channel deletion method of the composite broadcast receiver further comprising the step of returning.