KR19990042787A - 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 of a composite broadcast receiver capable of efficiently scrolling a program guide screen using a numeric key in a composite broadcast receiver capable of receiving satellite signals and cable broadcast signals. When the channel information according to each broadcasting mode and the program information provided for each channel is pre-stored, when a guide screen request key signal for the program for each channel is input, the guide screen for the program for each channel is input. Displaying a first step; A second step of reading channel information corresponding to the input channel number among the program information for each channel when a channel number corresponding to a specific channel among the plurality of broadcast channels is input; A third step of determining whether the read channel information is a duplicate channel in which both the satellite broadcast signal and the cable broadcast signal are received; A fourth step of displaying a guide screen composed of program information for each channel sequentially from a channel corresponding to the channel number when the determination result is not a duplicate channel; A fifth step of displaying a selection menu for selecting a broadcast mode corresponding to the channel number in the case of a duplicate channel as a result of the determination; When a selection key signal for the broadcast mode is input, a sixth step of displaying a guide screen consisting of program information for each channel sequentially from a channel corresponding to the channel number among all channel information of the selected broadcast mode.

Description

How to Display Program Guide Screen of Composite Broadcast Receiver

The present invention relates to a composite broadcast receiver capable of receiving a satellite broadcast signal and a cable broadcast signal, and more particularly, to a method for displaying a program guide screen of a composite broadcast receiver for various satellite broadcast channels and cable broadcast channels.

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.

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. In detail, in the general composite broadcast receiver currently developed, channels 1 to 158 are allocated to CATV broadcasting and channels 100 to 999 are allocated to satellite broadcasting. That is, the channels 100 to 158 are redundant channels allocated to both the satellite broadcast channel and the CATV broadcast channel.

Therefore, both a satellite broadcast signal and a CATV broadcast signal may be received in one channel number, and in this case, a specific broadcast signal for the corresponding channel number is received by switching the broadcast mode of the receiver according to the broadcast mode switching signal of the user. Done.

Meanwhile, the composite broadcast receiver also provides a channel program guide screen for displaying satellite broadcast program and CATV broadcast program information. FIG. 4 shows an example of a channel guide screen provided in the conventional composite broadcast receiver. As a drawing, it demonstrates with reference to FIG.

When the user calls the program guide screen for each channel by using the key input means, the program guide screen as shown in FIG. 4 is displayed, and the user operates the key input means to move the guide screen left, right, up. By scrolling down, you find the broadcast program of the channel you want.

On the other hand, the program guide screen for each channel displayed at this time, considering the duplication of the broadcast channel as described above, as shown in the drawing, first from 1 to 158 CATV broadcast channel is displayed and then to 100 ~ 999 The satellite broadcast channel is displayed.

Accordingly, in the conventional broadcast program guide screen provided by the conventional composite broadcast receiver, it is inconvenient for the user to repeatedly perform a cumbersome key manipulation process according to screen scrolling in order to search for a broadcast program of a channel desired by the user.

Accordingly, the present invention has been made in view of the foregoing, and when a user manipulates a numeric key provided in a key input unit without a cumbersome key manipulation process in a program guide screen of a composite broadcast receiver, the channel corresponding to the input number is determined. The present invention relates to a method for displaying a program guide screen of a composite broadcast receiver capable of displaying a program information screen.

In order to achieve the above object, the present invention is to display a program information for each channel in a composite broadcast receiver that can accommodate a plurality of satellite broadcast channel signals provided through a satellite and a plurality of cable broadcast channel signals provided through a transmission path In the method, when the channel information according to each broadcasting mode and the program information provided for each channel is pre-stored, when the guide screen request key signal for the program for each channel is input, the program for each channel Displaying a guide screen for the first step; A second step of reading channel information corresponding to the input channel number among the program information for each channel when a channel number corresponding to a specific channel among the plurality of broadcast channels is input; A third step of determining whether the read channel information is a duplicate channel in which both the satellite broadcast signal and the cable broadcast signal are received; A fourth step of displaying a guide screen composed of program information for each channel sequentially from a channel corresponding to the channel number when the determination result is not a duplicate channel; A fifth step of displaying a selection menu for selecting a broadcast mode corresponding to the channel number in the case of a duplicate channel as a result of the determination; And a sixth step of displaying, when the selection key signal for the broadcast mode is input, a guide screen including sequential channel-specific program information starting from a channel corresponding to the channel number among all channel information of the selected broadcast mode. A method of displaying a program guide screen of a receiver is provided.

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 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 for each channel provided by a conventional composite broadcast 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. Block 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. do.

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 operates a key input unit (not shown) and inputs a program guide screen key signal for each channel, the control block 112 stores the menu screen information stored in the memory block 114 and each of the menu screen information. The program information for each channel is read and provided to the OSD processing block 116, thereby displaying a general program guide screen for each channel as shown in FIG.

That is, as shown in the drawing, the horizontal axis consists of respective time zones, the vertical axis consists of each channel information, and the date column 410 displays a date corresponding to program information for each channel currently displayed.

In the state in which the program guide screen for each channel as shown in the same figure is displayed through the above-described process, a key not shown again for the user to refer to program information corresponding to a specific channel, for example, CH 137 When inputting '1', '3', and '7' by manipulating the input unit, the number input by the user is displayed in the date field 410 as shown in FIG. 2A.

In addition, the control block 112 reads each channel information stored in the memory block 114 to determine whether the input channel CH 137 is a duplicate channel in which the CATV broadcast and the satellite broadcast are overlapped. In the case of a channel, as shown in FIG. 2B, a selection menu 220 for selecting a broadcast mode is superimposed on the currently displayed program information screen.

That is, since the broadcast channel corresponding to the number input by the user is a channel in which the CATV broadcast and the satellite broadcast channel are repeatedly received, the selection menu screen 220 for displaying which broadcast mode to select is displayed.

When the user selects the satellite broadcasting mode by manipulating a key input unit, which is not shown again, the control block 112 controls each channel for satellite broadcasting stored in a predetermined region of the memory block 114 based on the input key signal. By sequentially displaying the program information of the channel CH 137 input by the user among the program information, the program guide screen for each channel as shown in FIG. 2C is displayed.

Meanwhile, the date corresponding to the currently displayed program information is displayed again in the date field 410 of the displayed program guide screen.

If the channel number input by the user in the above-described process is not a duplicate channel set for the satellite broadcasting channel and the CATV broadcasting channel, the above-mentioned selection menu screen 220 is displayed. Displayed sequentially from the corresponding channel of the broadcast mode.

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.

After program information for various satellite broadcast channels and CATV broadcast channels provided to the composite broadcast receiver is stored in a predetermined area of the memory block 114, the overall operation of the receiver is operated in the normal viewing mode (step 301). When the program guide screen key signal for each channel is input (step 303), the control block 112 shows program information for each channel of the CATV broadcast and program information for each channel for the satellite broadcast shown in FIG. As shown, the display screen is configured and composed of one guide screen (step 305).

At this time, if a channel number for a specific channel is input to the control block 112 again (step 307), the input channel number is displayed in the date field 410 of the guide screen. Given that the three-digit number is configured, the input channel number is also input of three digit numbers (for example, 008, 048, 253 ...).

Meanwhile, the control block 112 reads channel information corresponding to the input channel from each channel information stored in the predetermined area of the memory block 114 (step 307), so that the channel input by the user is a satellite broadcast channel and a CATV broadcast. It is determined whether the channel is a duplicate channel in which all channels are received (step 315).

If the key signal for performing the channel number or another specific command is not input for a predetermined time in step 307 described above (step 309), each channel displayed on the current screen by the control block 112 The star program information screen is automatically turned off, and the operation of the receiver is automatically switched to the normal viewing mode of the initial stage 301 described above (step 311).

On the other hand, when the determination result in step 315 is not a duplicated channel, the broadcast corresponding to the channel number input by the user in step 307 described above among the various channels of the broadcasting mode corresponding to the input channel. If the channel is a duplicate channel, the selection block 220 for selecting a broadcast mode as shown in FIG. 2B is superimposed on the currently displayed program guide screen by the control block 112 (step 319).

When the broadcast mode for the channel input by the user is selected (step 321), the control block 112 automatically turns off the currently displayed broadcast selection menu screen 220 (step 327), and the broadcast selected by the user. The program information corresponding to the channel number corresponding to the mode, that is, the channel number input in step 307, is sequentially displayed (step 329).

On the other hand, if the broadcast mode selection signal for the channel number input by the user is not input within the predetermined time in step 321 described above (step 323), the control block 112 determines the broadcast mode for the input channel number. It automatically determines the satellite broadcasting mode and sequentially displays the program information corresponding to the channel number input in the above-mentioned step 307 among the program information for each channel of the satellite broadcasting mode (step 325).

As described above, according to the present invention, a composite broadcast receiver capable of receiving a plurality of CATV broadcast channels as well as a satellite broadcast channel is performed using a numeric key without cumbersome key manipulation when scrolling a screen of a program guide screen for each channel. It can work.

Claims (4)

A method of displaying program information for each channel in a composite broadcast receiver capable of receiving a plurality of satellite broadcast channel signals provided through a satellite and a plurality of cable broadcast channel signals provided through a transmission path, When the channel information for each channel and the program information provided for each channel are stored in advance, when a request screen signal for a program for each channel is input, a guide screen for the program for each channel is displayed. Displaying the first step; A second step of reading channel information corresponding to the input channel number among the program information for each channel when a channel number corresponding to a specific channel among the plurality of broadcast channels is input; A third step of determining whether the read channel information is a duplicate channel in which both the satellite broadcast signal and the cable broadcast signal are received; A fourth step of displaying a guide screen composed of program information for each channel sequentially from a channel corresponding to the channel number when the determination result is not a duplicate channel; A fifth step of displaying a selection menu for selecting a broadcast mode corresponding to the channel number in the case of a duplicate channel as a result of the determination; And a sixth step of displaying, when the selection key signal for the broadcast mode is input, a guide screen including sequential channel-specific program information starting from a channel corresponding to the channel number among all channel information of the selected broadcast mode. How to display the program guide screen on the receiver. The method of claim 1, wherein if the channel number for the specific channel is not input within a predetermined time period, the second step automatically turns off the displayed program guide screen for each channel and stops the operation of the satellite broadcasting receiver. The program guide screen display method of the composite broadcast receiver further comprising the step of switching to the normal viewing mode. The satellite broadcasting receiver of claim 1, wherein in the second step, when a channel number for the specific channel is input, the channel number is displayed in a date field of the displayed program guide screen for each channel. How to display the program guide screen. The method of claim 1, wherein in the sixth step, if the broadcast mode corresponding to the channel number is not selected within a predetermined time period, the broadcast mode corresponding to the channel number is determined as the satellite broadcast mode. The program guide screen display method of the composite broadcast receiver further comprises a display for displaying a guide screen consisting of the program information for each channel sequentially from the channel corresponding to the channel number of all the channel information.