KR19990052318A - How to display channel information screen of composite broadcast receiver - Google Patents

Abstract

The present invention relates to a method for displaying a channel guide screen of a composite broadcast receiver which can avoid user confusion by separately configuring a channel guide screen displayed for a predetermined time when the channel is switched in the composite broadcast receiver for a satellite broadcast channel and a CATV broadcast channel. If a key signal for switching to any one of the plurality of channels is input during the normal viewing mode of the composite broadcast receiver, it is determined whether the inputted channel is the satellite broadcasting channel or the cable broadcasting channel. Determining a first step; As a result of the determination, in the case of the satellite broadcasting channel, displaying the additional information screen extracted from the satellite broadcasting signal for a predetermined time; A third step of displaying a guide screen indicating that the predetermined channel is a cable channel when the cable broadcasting channel is determined as a result of the determination; And a fourth step of receiving and displaying broadcast signals for the arbitrary channels.

Description

How to display channel information screen of composite broadcast receiver

The present invention relates to a composite broadcast receiver, and more particularly, to a method for displaying a channel information screen of a composite broadcast receiver suitable for efficiently configuring and displaying a channel information screen displayed when a channel is switched in the composite broadcast receiver.

In recent years, the broadcast method using satellites, which is rapidly expanding in use, 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 surface of the earth. In this satellite broadcasting system, for example, an old band RF signal having a frequency band of 11.7 GHz to 12.0 GHz is 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, such a general composite broadcast receiver provides a channel banner screen, which is an additional information screen, for each channel. The channel banner screen provides a channel switching signal to watch a broadcast program of another channel while the user watches a specific channel. When inputting, the banner screen of the channel corresponding to the key signal input by the user is first displayed for a predetermined time (for example, 3 seconds), and then the broadcast signal of the corresponding channel is tuned and displayed.

FIG. 4 is a diagram illustrating an example of a channel banner screen provided in a conventional composite broadcast receiver. As shown in the drawing, a channel name, a broadcast logo 301, a voice multiplex 303, and a stereo 305 are illustrated. ), Including additional information such as e-mail 307, parental control 309, etc., to be displayed on part or all of the screen, which is separately inserted into the satellite signal and transmitted.

Meanwhile, such a channel banner screen displays a banner screen having the same configuration when switching not only a satellite broadcasting channel but also a CATV channel switching. In fact, since the channel banner screen is a function related to satellite broadcasting, additional information on the corresponding channel is displayed. CATV broadcasting channel does not have a special meaning when switching is not provided.

In addition, since the channel banner screen and the CATV channel banner screen for satellite broadcasting are configured to be displayed on the same screen, the user may cause confusion when switching channels.

Accordingly, the present invention has been made in view of the above-mentioned point, and the channel information screen of the composite broadcast receiver configured to display a separate channel information screen different from the satellite channel banner screen when switching the channel for CATV broadcasting in the composite broadcast receiver is displayed. The purpose is to provide a method.

In order to achieve the above object, the present invention provides a broadcast signal processing path for processing a plurality of terrestrial broadcast channels and cable broadcast channels tuned through a composite tuner and a broadcast signal for processing a plurality of satellite broadcast channels tuned through the composite tuner. A method of displaying a channel guide screen displayed when a composite broadcast receiver having a processing path is switched to any one of the plurality of channels, the method comprising: during a normal viewing mode of the composite broadcast receiver, any of the plurality of channels A first step of determining whether the inputted channel is the satellite broadcasting channel or the cable broadcasting channel when a key signal for switching to a channel of the input signal is input; As a result of the determination, in the case of the satellite broadcasting channel, displaying the additional information screen extracted from the satellite broadcasting signal for a predetermined time; A third step of displaying a guide screen indicating that the predetermined channel is a cable channel when the cable broadcasting channel is determined as a result of the determination; And a fourth step of receiving and displaying a broadcast signal for the arbitrary channel.

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

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

3 is a diagram illustrating an example of a channel information screen of a composite broadcast receiver according to an embodiment of the present invention;

4 is a diagram illustrating an example of a channel banner screen provided in a conventional general 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

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings.

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 method for displaying a channel information screen 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 140, a switching 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, information on each channel, and the like, and when the transmission of a message or a guidance screen to a monitor (not shown) is requested, the memory unit 135 extracts the corresponding OSD data and controls the controller 110. It is provided to the OSD unit 140 through).

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 process of displaying a channel information screen of a composite broadcast receiver according to an exemplary embodiment of the present invention. The method of displaying the channel information screen of the composite broadcast receiver in detail with reference to the accompanying drawings is as follows. .

During the normal viewing mode in which the operation of the composite broadcast receiver configured as described above receives a broadcast signal of a specific channel selected by the user and displays the signal through a predetermined signal processing process (step 201), the current operation is performed through the key input unit 105. When a channel switch key signal for switching the viewing channel to a specific channel is input (step 203), the controller 110 reads channel information of the composite broadcast receiver previously stored in a predetermined region of the memory unit 135 to convert the channel switch key signal. It is determined whether the channel corresponding to is a satellite broadcast channel or a CATV channel (step 205).

As a result of the determination, in the case of the satellite broadcasting channel, each piece of information (for example, parental control information, logo, channel name, voice multiplex, etc.) for constituting a channel banner screen stored in another predetermined area of the memory unit 135 is read again. (Step 207), the channel banner screen as shown in FIG. 4 is displayed through the OSD unit 140 (step 209).

When a predetermined time (for example, 3 seconds) elapses while the channel banner screen is displayed (step 211), the channel banner screen displayed on the current screen is automatically turned off (step 219). In operation 203, the channel corresponding to the input channel switching key signal is tuned (step 221) to display the broadcast signal of the corresponding channel (step 223).

On the other hand, on the contrary, if the channel corresponding to the channel switch key signal is a CATV channel as a result of the determination in step 205, the channel guide screen for the channel corresponding to the channel switch key signal is shown in FIG. Will be displayed.

That is, unlike the channel banner screen, a channel guide screen including only additional information (for example, date and time) is displayed along with the information that the channel corresponding to the input key signal is a CATV channel. The screen may be displayed on a part or the whole of the screen according to the programming process of the controller 110 and the OSD unit 140.

Subsequently, when a predetermined time elapses while the guide screen for the CATV channel is displayed through the above-described step 215 (step 217), the controller 110 blocks driving of the OSD unit 140. The channel guide screen displayed on the current screen is automatically turned off (step 219), and a tuning control signal is generated to the tuner and demodulator 115 to tune a channel corresponding to the channel switching signal input by the user (step 221).

Then, by displaying the broadcast signal of the tuned channel on the screen through a predetermined signal processing process, the overall operation of the user's channel switching key signal is terminated (step 223).

As a result, when the channel switching key signal is input, the controller 110 determines whether a channel corresponding to the input key signal is a satellite broadcasting channel or a CATV broadcasting channel and displays different channel guide screens.

As described above, according to the present invention, the mixed channel receiver displays the channel guide screen displayed when switching channels for CATV broadcasting by configuring and displaying a separate channel information screen different from the guide screen displayed when switching satellite broadcast channels. There is an effect that can be avoided, and accordingly there is an effect that can meet the needs of more diverse users.

Claims (2)

In a composite broadcast receiver having a broadcast signal processing path for processing a plurality of terrestrial broadcast channels and cable broadcast channels tuned through a composite tuner and a broadcast signal processing path for processing a plurality of satellite broadcast channels tuned through the composite tuner. In the method for displaying a channel guide screen displayed when switching to any of a plurality of channels, During the normal viewing mode of the composite broadcast receiver, when a key signal for switching to any one of the plurality of channels is input, it is determined whether the inputted arbitrary channel is the satellite broadcasting channel or the cable broadcasting channel. First step; As a result of the determination, in the case of the satellite broadcasting channel, displaying the additional information screen extracted from the satellite broadcasting signal for a predetermined time; A third step of displaying a guide screen indicating that the predetermined channel is a cable channel when the cable broadcasting channel is determined as a result of the determination; And receiving and displaying a broadcast signal for the arbitrary channel. The method of claim 1, wherein the guide screen is displayed on a part of the screen of the composite broadcast receiver.