KR19990042305A - How to Display Program Guide Screen of Composite Broadcast Receiver - Google Patents

Abstract

The present invention relates to a method for displaying a program guide screen for each channel separated by each broadcasting mode in a composite broadcasting receiver capable of receiving a satellite broadcasting signal provided from a satellite and a cable broadcasting signal received through a transmission path. During a normal viewing mode, when a key signal for displaying program information for each channel is input, displaying a guide screen including a region in which the satellite broadcasting program information and the cable broadcasting program information are separated; Determining a current broadcast mode of the receiver and inverting and setting a guide screen area corresponding to the determined broadcast mode; A third step of returning the inverted area to the original screen and inverting and setting another area of the guide screen when a key signal for switching the broadcast mode of the receiver is generated; A fourth step of scrolling program information of the set broadcast mode area when a key signal for scrolling the guide screen is generated; And a fifth step of turning off the displayed program guide screen and switching the operation of the receiver to the normal viewing mode when a key signal for turning off the guide screen is generated.

Description

How to Display Program Guide Screen of Composite Broadcast Receiver

The present invention relates to a composite broadcast receiver, and more particularly, to a composite broadcast receiver suitable for displaying a broadcast program guide screen for each channel in a composite broadcast receiver that can accommodate a plurality of CATV broadcast signals provided through an external transmission path. It relates to a guide screen display method.

As is well known, satellite broadcasting is capable of receiving broadcast signals from ground stations (broadcasting earth stations) using broadcast satellites in a stationary orbit about 36,000 kilometers above the equator, and receiving them directly from the satellite receiving antennas in each home. The broadcasting system is a broadcasting system in which the selection range of information is greatly expanded compared to the conventional terrestrial or cable broadcasting system.

The satellite broadcast receiver used for the satellite broadcast receives the bit stream provided from the satellite, processes the broadcast signal of the selected channel, and then provides it to a display device (for example, a TV).

In this case, the bit stream provided from the satellite includes various information such as broadcast signals (video data and audio data), event information table (EIT), and time data table (TDT) for each channel.

The satellite broadcasting receiver used for the satellite broadcasting receives the bit stream provided from the satellite, processes the broadcast signal of the selected channel, and then provides the signal to a display device (for example, TV) to display on the screen. The receiver is provided with various menu screens or guide screens for providing the above-mentioned various information and additional functions.

In addition, a guide screen for displaying a broadcast program for each channel is provided among the menu screens. FIG. 4 is a diagram illustrating an example of a program guide screen provided by a conventional satellite broadcasting receiver. As described above, the title of the broadcast program for each channel and the broadcast time of the program are displayed together.

In addition, the user may scroll the screen left, right, up, or down by using a key input means, so that the user may refer to information on the remaining channels not displayed on the screen.

On the other hand, in recent years, not only satellite broadcasting but also CATV broadcasting method using cable has been rapidly spreading. If a subscriber (that is, one receiver) wants to receive all of these types of broadcasting signals, Because of the different frequency bands, it would be necessary to have separate satellite tuners and cable tuners.

Therefore, in order to accommodate various types of broadcasts as described above, two types of broadcasts are processed through separate signal processing paths (that is, satellite broadcast signal processing paths and cable broadcast signal processing paths). A composite broadcast receiver employing a composite tuner is also being developed.

In the composite broadcast receiver, as described above, since a plurality of satellite broadcast channels and CATV broadcast channels are input, overlapping channels may occur. That is, both a satellite broadcast signal and a CATV broadcast signal may be received in one channel number. In this case, the broadcast mode of the receiver is switched according to a user's selection, thereby receiving a specific broadcast signal for the corresponding channel number.

In addition, the composite broadcast receiver also needs a guide screen for displaying satellite broadcast program and CATV broadcast program information. When providing a guide screen considering the duplication of the broadcast channel as described above, the user's convenience in using the guide screen Will be able to improve.

Accordingly, the present invention has been made in view of the above-described points, and the program guide screen of the composite broadcast receiver capable of separately configuring program information for each broadcast mode in the composite broadcast receiver and displaying the information on one guide screen is provided. The purpose is to provide a method.

In order to achieve the above object, the present invention provides a method for storing and displaying program information for each channel in a composite broadcast receiver capable of receiving a satellite broadcast signal provided from a satellite and a cable broadcast signal received through a transmission path. During a normal viewing mode of the receiver, when a key signal for displaying program information for each channel is input, a first step of displaying a guide screen composed of regions in which the satellite broadcast program information and the cable broadcast program information are separated from each other; ; Determining a current broadcast mode of the receiver and inverting and setting a guide screen area corresponding to the determined broadcast mode; A third step of returning the inverted area to the original screen and inverting and setting another area of the guide screen when a key signal for switching the broadcast mode of the receiver is generated; A fourth step of scrolling program information of the set broadcast mode area when a key signal for scrolling the guide screen is generated; And a fifth step of turning off the displayed program guide screen when the key signal for turning off the guide screen and switching the operation of the receiver to the normal viewing mode. To provide.

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

2 is a view for explaining a method for displaying a program guide screen of a composite broadcast receiver according to an embodiment of the present invention;

3 is a flowchart illustrating a process of displaying a program guide screen of a composite broadcast receiver according to an embodiment of the present invention;

4 is a diagram illustrating an example of a program guide screen provided by a conventional satellite broadcasting receiver.

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

102: tuner block 104: MPEG decoding block

106: video encoding block 108: video processing block

110: sync extraction block 112: control block

114: memory block 116: OSD processing block

118: mixer 120: switching block

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 program guide screen of a composite broadcast receiver according to an exemplary embodiment of the present invention. The tuner block 102, the MPEG decoding block 104, and the video encoding block are shown. 106, video processing block 108, sync extraction block 110, control block 112, memory block 114, OSD processing block 116, mixer 118, and switching block 120. .

Referring to FIG. 1, the tuner block 102 is based on a tuning control signal provided from a control block 112 to be described later via a line L11, and a broadcast signal receiver (i.e., a satellite reception antenna, a cable, etc.) is not shown. Tunes the broadcast channel selected by the user from the broadcast signal received through the signal and demodulates the tuned broadcast channel signal into the original signal before transmission. In this case, when the satellite broadcast signal is tuned, the demodulated satellite channel signal is transmitted through line L12. The demodulated CATV broadcast channel signal is provided to the video processing block 108 via line L14 when provided to the MPEG decoder block 104 and the cable broadcast signal is tuned.

That is, the tuner block 102 is composed of a composite tuner capable of mode-receiving and tuning satellite and CATV broadcast signals provided through an antenna or transmission line (not shown).

In the MPEG decoder block 104, the compressed and encoded video signal of the tuned satellite broadcast channel provided by the tuner block 102 through the line L12 is compressed in consideration of the spatiotemporal and spatial correlation of the video signal. The encoded video signal is restored to the original signal before encoding using a decoding technique such as variable length decoding, inverse DCT, inverse quantization, and motion compensation, and the recovered digital video signal is transferred to the next video encoding block 106. Is provided.

Next, the video encoding block 106 converts the tuned digital video signal provided in the MPEG decoding block 104 described above into an NTSC or PAL analog video signal and then to the contact b of the switching block 114 via the line L13. to provide.

In addition, the video processing block 108 processes the tuned analog video signal (i.e., cable broadcast channel signal) provided by the tuner block 102 through line L14, e.g., level amplification, noise cancellation, gain control. Various signal processing such as the above is performed and provided to the contact point c of the sync extraction block 110 and the switching block 114 through the line L15.

Meanwhile, the sync extraction block 110 extracts a sync signal, that is, a horizontal sync signal, included in the tuned channel signal provided by the video processing block 108 through the line L15, and the extracted horizontal sync signal is Provided to control block 110 via line L16. In this case, the horizontal sync signal extracted here is used to determine whether the tuned broadcast signal is an effective channel. The existence of the horizontal sync signal is checked for each channel so that only a channel with good viewing can be automatically tuned. It will be performed for a predetermined time.

On the other hand, the control block 112 is, for example, a microprocessor that performs overall operation control of the receiving system, and when the user broadcast channel selection signal (ie, operation signal) is input from the outside, the corresponding tuning control signal Is generated and provided to the above-described tuning block 102 through the line L11, and stores channel information (effective channel) and program information of each broadcast mode (satellite broadcast mode and cable broadcast mode) in the memory block 114. In addition, the memory block 114 stores various OSD data for displaying various menu screens and guide screens in addition to the channel information and program information.

When the control block 112 sends out a message or a guide screen to a monitor (not shown), the OSD data is extracted from a predetermined area of the memory block 114 to the OSD processing block 116 through the line L18. Will be provided.

In addition, the control block 112, based on the user operation signal from the outside, the switching control signal on the line L17 for switching the output of the broadcast signal corresponding to the broadcast mode currently being viewed or the broadcast mode that the user wants to switch To the switching block 120 to be described later.

The OSD processing block 116 displays the OSD screen data based on the vertical and horizontal sync signals generated for positioning of the OSD data to be sent when the message data is provided from the control block 112 through the line L18. And the OSD screen data configured here is provided to the mixer 118 via line L19.

Therefore, the mixer 118 properly mixes the image data on the line L15 and the OSD screen data when the OSD screen data is provided through the line L19 to provide the contact c of the switching block 120 through the line L20. Also, the mixer 118 bypasses the image data on the line L15 to the contact c of the switching block 120 as it is when there is no OSD screen data on the line L19.

Meanwhile, the switching block 120 selectively switches the video signal output of the tuned cable broadcast (or a mixed video signal mixed with OSD data) and the video signal output of the tuned satellite broadcast channel, and the control block described above through the line L17. Based on the switching control signal provided from 112, when the satellite broadcast mode is selected by the user, the contact ab is connected to provide a video signal of the satellite broadcast channel provided through the line L13 to the display side, not shown, and When the cable broadcast mode is selected, the contact ac is connected to provide a video signal (or a mixed video signal mixed with OSD data) provided through the line L20 to the display side, not shown.

In the composite broadcast receiver configured as described above, when a user inputs a program guide key signal to display satellite broadcast and CATV broadcast program information by using a key input means (not shown), the control block 112 includes a memory block ( Program information and OSD screen information for each channel for satellite broadcasting and CATV broadcasting stored in 114 are read out and provided to the OSD processing block 116.

The OSD processing block 116 separates the satellite broadcast program information and the CATV broadcast program information based on the input screen information and displays a program guide screen for each channel as shown in FIG. 2.

That is, the satellite broadcast program information and the CATV broadcast program information are configured and displayed as one guide screen, but are displayed in separate areas 210 and 220 so that the user can easily distinguish program information for each broadcast mode.

On the other hand, the guide screen displayed at this time to display the current mode inverted to indicate the current broadcast mode. That is, when the above-described program guide key signal is input, the corresponding broadcast mode portion of the program guide screen displayed by checking the current broadcast mode is displayed in reverse.

Referring to the drawings, if a key signal for displaying a program guide screen for each channel is generated while the receiver is operated in the CATV broadcasting mode before the program guide key signal is generated, As shown, the program guide screen in which the CATV broadcast mode portion is reversed is displayed.

When the user inputs the screen scroll key signal, only program information for each channel of the CATV is scrolled in the direction corresponding to the scroll key signal. That is, only program information corresponding to the currently set broadcast mode is scrolled.

If the user inputs a mode switch key signal while the program guide screen is set to the CATV broadcast mode as shown in the drawing, the mode of the guide screen is set to the satellite broadcast mode in response to the key signal. The broadcast mode section is displayed inverted, informing the user that the broadcast mode has been switched.

As described above, when the user inputs the screen scroll key signal, the program information for the CATV broadcast is not scrolled, and only program information for each channel of the satellite broadcast is scrolled based on the scroll key signal.

FIG. 3 is a flowchart illustrating a process of displaying a program guide screen of a composite broadcast receiver according to an exemplary embodiment of the present invention. Hereinafter, the series of processes described above with reference to the accompanying drawings will be described in detail.

During the normal viewing mode in which the operation of the composite broadcast receiver displays a specific channel of the satellite broadcasting mode or the CATV broadcasting mode through a predetermined signal processing process (step 301), displaying program information for each channel received by the composite broadcasting receiver. When the control signal is input (step 303), through the OSD processing block 116, a program guide screen in which the CATV broadcast program information is separated from the satellite broadcast program information as shown in FIG. 2 is displayed (step 305).

At this time, the control block 112 determines the broadcast broadcast mode of the current receiver, that is, the broadcast mode in which the receiver operates in the normal viewing mode of step 301 described above (step 307), and is currently displayed according to the determination result. One area of each mode (CATV broadcast area 210 and satellite broadcast area 220) of the guide screen is set (step 309).

In other words, if the operation of the receiver is performed in the CATV mode at the time when the program guide key signal is generated, the user is guided by inverting the CATV areas 210 and 220 of each area of the guide screen as shown in FIG. 2. This indicates that the CATV broadcast mode is set.

When the program guide screen is set to a specific broadcast mode through the above-described process, when the user inputs a mode switch key signal for switching the mode of the guide screen again (step 311), the control block 112 The guide screen is set to a broadcast mode other than the currently set broadcast mode.

If a mode switch key signal is not generated in step 311 described above, and a scroll key signal for scrolling program information for the set broadcast mode is input (step 313), the control block 112 is currently set. By reading and displaying program information for the mode from the memory block 114, the guide screen area for the broadcast mode is scrolled (315).

On the other hand, in step 313, when a predetermined time elapses without inputting a key signal for turning off the currently displayed program guide screen instead of the guide screen scroll key signal or inputting a key signal for performing another specific command, (Step 317), the operation of the OSD processing block 116 is blocked by the control block 112, so that the currently displayed program guide screen is turned off and the operation of the receiver switches to the normal viewing mode of the initial step 301 described above. (Step 319).

As described above, according to the present invention, a program guide screen for each channel in a composite broadcast receiver capable of receiving a CATV broadcast signal and a satellite broadcast signal is configured and displayed in separate areas, and the user guides by performing individual control. There is an effect that can increase the convenience for using the screen.

Claims (2)

A method of storing and displaying program information for each channel in a composite broadcast receiver capable of receiving a satellite broadcast signal provided from a satellite and a cable broadcast signal received through a transmission path, During a normal viewing mode of the receiver, when a key signal for displaying program information for each channel is input, a first screen for displaying a guide screen composed of regions in which the satellite broadcast program information and the cable broadcast program information are separated from each other is performed. step; Determining a current broadcast mode of the receiver and inverting and setting a guide screen area corresponding to the determined broadcast mode; A third step of returning the inverted area to the original screen and inverting and setting another area of the guide screen when a key signal for switching the broadcast mode of the receiver is generated; A fourth step of scrolling program information of the set broadcast mode area when a key signal for scrolling the guide screen is generated; And a fifth step of turning off the displayed program guide screen when the key signal for turning off the guide screen and switching the operation of the receiver to the normal viewing mode. . The method of claim 1, wherein the fifth step, The program guide screen of the composite broadcast receiver further comprises the step of automatically turning off the guide screen when the key signal for performing the other specific command for a predetermined time while the program guide screen is displayed. Display method.