KR100267147B1 - Method for display of channel information in cable television - Google Patents

Abstract

PURPOSE: A method for displaying channel information of a CATV(Cable Television) is provided to display frequency information relating to each channel, so as to supply various information to a user. CONSTITUTION: If a channel retrieval key signal for searching CATV(Cable Television) channels is inputted in a state which power is turned on(303), a satellite broadcasting receiver tunes each channel allocated to a CATV(305). The satellite broadcasting receiver sequentially stores the tuned channels and frequency information corresponding the channels(307). If the tuning process is completed(309), the satellite broadcasting receiver is converted into a standby mode(311). If a channel guiding key signal of the CATV is generated(313), the satellite broadcasting receiver reads the stored channels(315) and the frequency information, and displays the channels and the frequency information(317).

Description

Channel information display method of cable TV {METHOD FOR DISPLAY OF CHANNEL INFORMATION IN CABLE TELEVISION}

The present invention relates to a digital satellite broadcasting receiver, and more particularly, to a method for displaying channel information of a cable TV suitable for displaying each channel information of CATV in a satellite broadcasting receiver capable of receiving a satellite broadcasting signal and a digital CATV broadcasting signal. .

As is well known, satellite broadcasting uses broadcast satellites in a stationary orbit of 36,000 km over the equator to receive broadcast signals from ground stations (broadcasting earth stations), which can be directly received by satellite receiving antennas in each home. This system is a broadcasting method in which the information selection range is greatly expanded compared to the conventional terrestrial or cable broadcasting system.

Meanwhile, 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. Information about broadcast channels, that is, channel names for broadcasting stations and program information for each channel is included and displayed on a screen according to a user's request.

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. In addition to signals, it is also possible to receive digital CATV broadcast signals.

However, unlike the above-mentioned satellite broadcasting signal, the digital CATV broadcasting signal does not include information about each channel name. Therefore, the satellite broadcasting receiver adds a function for displaying the frequency for each channel of the CATV tuned automatically. If possible, it will be possible to meet the needs of various users according to the more various services provided.

Accordingly, an object of the present invention is to provide a method for displaying channel information of a cable TV that can display the frequency of each channel of a CATV broadcast signal received from a satellite broadcast receiver.

In order to achieve the above object, the present invention receives a satellite broadcasting signal provided from a satellite and a digital cable TV broadcast signal provided through a transmission path, and displays the channel information of the digital cable TV in a satellite broadcasting receiver displaying the same. The method of claim 1, further comprising: tuning a channel allocated to the cable TV when a channel search key signal for searching for a channel of the cable TV is input while the satellite broadcasting receiver is turned on. And a second step of sequentially storing each tuned channel and frequency information corresponding to each channel, and a third step of switching the operation of the satellite broadcasting receiver to a standby mode when the tuning process is completed. When the channel guide key signal is generated, by reading each of the stored channel and frequency information It provides a respective channel and a fourth step the channel information display method of the cable television that includes displaying a frequency information corresponding to the channel of the cable television group.

1 is a block diagram of a satellite broadcasting receiver suitable for applying a method for displaying channel information of a cable TV according to an exemplary embodiment of the present invention;

2 is a diagram illustrating an example of a method of displaying channel information of a cable TV according to an embodiment of the present invention;

3 is a flowchart illustrating a process of displaying channel information of a satellite broadcasting receiver according to an exemplary embodiment of the present invention.

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

10: key input unit 20: tuner and demodulation unit

30: micom 40: MPEG decoder

50: signal processing section 60: memory section

70: OSD 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 satellite broadcasting receiver suitable for applying a method for displaying channel information of a cable TV according to an exemplary embodiment of the present invention, and includes a key input unit 10, a tuner and a demodulator 20, and a microcomputer 30. , An MPEG decoder 40, a signal processing unit 50, a memory unit 60, and an OSD unit 70.

The key input unit 10 is composed of key metrics on a remote controller or its own panel, and generates a corresponding key signal to the microcomputer 30 by a user's manipulation, and in particular, displays information on each channel of the CATV. It is configured to include a function key.

The tuner and demodulator 20 is a complex tuner capable of receiving a satellite broadcast signal received through a satellite antenna (not shown) and a CATV broadcast signal provided through a transmission path. The bitstream of the corresponding channel is tuned and then demodulated and provided to the MPEG decoder 40.

The microcomputer 30 controls a control signal for tuning the broadcast channel, a control signal for tuning the broadcast channel, and a control signal for driving the OSD unit 70 based on a key signal from the key input unit 10. The frequency of each channel of the CATV tuned by the tuner and the demodulator 20 is provided to the memory unit 60 to be described later.

The MPEG decoder 40 separates and decodes a broadcast signal provided from the tuner and the demodulator 20 into an audio signal, a video signal, and various program information, and then provides the decoded signal to the signal processor 50. From the OSD unit 70, Data about various information provided is also provided to the signal processor 50 after a predetermined signal processing process.

The signal processing unit 50 converts the digital video signal of the frame unit provided by decoding from the MPEG decoder 40 into an NTSC or PAL signal and displays it on a monitor (not shown). The digital decoding of the MPEG decoder 40 is performed. The audio signal is converted into an analog signal and output to the speaker not shown.

The memory unit 60 is composed of a flash ROM, an EEPROM, and the like, and stores various channel information decoded and output from the above-described MPEG decoder 40 and frequencies for each channel of the CATV provided from the microcomputer 30. The channel information including the stored channel and the frequency for each channel is again output by the control of the microcomputer 30.

In detail, when a key signal for searching each channel of the CATV is input in the initial state of the satellite broadcasting receiver configured as described above, the microcomputer 30 selects each channel of the CATV received by the tuner and the demodulator 20. A control signal for tuning is generated, and the tuner and demodulator 20 tunes each channel assigned to CATV by the control of the microcomputer 30.

In addition, the microcomputer 30 stores the channel number and the frequency of each channel of the CATV tuned by the tuner and the demodulator 20 in the memory unit 60.

3 is a flowchart illustrating a process of displaying channel information of a cable TV according to an exemplary embodiment of the present invention, which will be described in detail with reference to the accompanying drawings.

When the satellite broadcasting receiver is powered on (step 301), when a key signal for searching each channel of the CATV is input (step 303), the tuner and the demodulator 20 controls the microcomputer 30. In step 305, each channel broadcast signal of the CATV provided through the transmission path is tuned.

In this case, each channel and the frequency of each channel of the tuned CATV broadcast are sequentially stored in the memory unit 60 by the microcomputer 30 (step 307), and through this process, the broadcast signal allocated to the CATV in the satellite broadcast receiver. After the channel tuning process for ended (step 309), the operation of the satellite broadcasting receiver is switched to the standby mode as in the initial step (301) (step 311).

Channel guide screen for the user to display the channel information of the CATV in a state in which each channel and the frequency of each channel of the CATV received through the transmission path in the satellite broadcasting receiver is stored in the memory unit 60 through the above-described process When the key signal is input through the key input unit 10 (step 313), the microcomputer 30 reads the channel information (frequency information for each channel) of the CATV stored in the memory unit 60 (step 315). By providing at 70, a channel guidance screen of CATV composed of frequency information for each channel is displayed on a monitor (not shown) as shown in Fig. 2 (step 317).

As a result, the satellite broadcasting receiver detects the frequency for each channel assigned to the CATV, and configures and displays the CATV channel guide screen.

As described above, according to the present invention, by displaying the frequency information for each channel of the CATV, it is possible to provide a variety of information to the user.

Claims (2)

A method of receiving channel information of a digital cable TV in a satellite broadcasting receiver which receives a satellite broadcasting signal provided from a satellite and a digital cable TV broadcasting signal provided through a transmission path and displays the same, A first step of tuning each channel allocated to the cable TV when a channel search key signal for searching for a channel of the cable TV is input while the satellite broadcasting receiver is powered on; A second step of sequentially storing each tuned channel and frequency information corresponding to each channel; A third step of switching the operation of the satellite broadcasting receiver to a standby mode when the tuning process is finished; And generating a channel guide key signal of the cable TV, and reading the stored channel and frequency information to display the channel information of the cable TV and the frequency information corresponding to the channel. How to display. The method of claim 1, wherein the tuned channel information and the frequency information for each channel are stored in a flash ROM.

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