KR20050107224A - Method for searching channel of broadcating signal receiver - Google Patents

Abstract

Disclosed is a channel search method of a broadcast receiver for easily performing channel search and storage of an over-the-air broadcast signal and a cable broadcast signal. This invention comprises the steps of: a) performing channel search and storage for all receivable over-the-air broadcast signals and cable broadcast signals when powered; b) checking whether the television is turned on during the execution of step a) and, if it is turned on, determining whether to store for each channel found in step a); c) if it is determined in step b) that the searched channel is to be stored, checking whether a predetermined time has elapsed since the channel search previously; d) comparing a difference between a previously stored channel when the predetermined time has elapsed and a channel newly searched in step b), and displaying a previously stored channel, a newly stored channel, and a changed channel on the screen in another case; And e) checking whether to store a previously stored channel among the changed channels in step d) and storing the stored channel after checking whether to store the changed channel. According to the present invention, all the airwaves are stored. Channel search and storage for the broadcast signal and the cable broadcast signal can be easily executed at predetermined time intervals, thereby further improving the convenience of the product.

Description

How to Search for Channels in Broadcast Receivers {METHOD FOR SEARCHING CHANNEL OF BROADCATING SIGNAL RECEIVER}

The present invention relates to a channel search method of a broadcast receiver. More particularly, the present invention relates to a channel search method of a broadcast receiver that enables the channel search of all over-the-air broadcast signals and cable broadcast signals to be easily performed.

Satellite or cable broadcasting collects program information and transmits unified channel information and program guide information, whereas PSIP is designed for ATSC terrestrial broadcasting. It is required to transmit. That is, in the case of DVB compatible satellite broadcasting, if only one repeater is tuned to receive a program related table (PAT), program numbers for all programs provided by the current broadcast can be known, and the event information table (EIT: Event Information) of the repeater can be known. Table can extract the guide information for the entire program. ATSC, however, is tuned to the frequency of one station and receives only the Master Guide Table (MGT) and Virtual Channel Table (VCT), but only programs from that carrier frequency are defined. I didn't know.

Therefore, in recent years, in order to know additional information on all channels that can receive broadcasts, all channels that can receive and receive tables according to the Program and System Information Protocol (PSIP) from ATSC standard terrestrial (airwave) televisions. By constructing a map, the configured channel 수 provided additional information for all channels.

That is, a general broadcasting receiver is provided with a system for tuning the broadcasting broadcast and a cable broadcasting tuning system separately, and the user searches for and saves the desired channel after selecting one of the broadcasting broadcasting tuning button or the cable broadcasting tuning button. However, there was a problem in that a channel search is impossible when viewing a broadcast receiver.

Accordingly, the present invention has been made in order to solve the above problems, the present invention is a channel search for all the available airwave broadcast signal and cable broadcast signal is periodically performed a predetermined time, so that the channel search can be easily performed It is an object of the present invention to provide a channel search method of a receiver.

Technical problem according to the present invention for achieving this object is,

a) performing channel search and storage for all receivable over-the-air broadcast signals and cable broadcast signals when power is supplied;

b) checking whether the television is turned on during the execution of step a) and, if it is turned on, determining whether to store for each channel found in step a);

c) if it is determined in step b) that the searched channel is to be stored, checking whether a predetermined time has elapsed since the channel search previously;

d) comparing a difference between a previously stored channel when the predetermined time has elapsed and a channel newly searched in step b), and displaying a previously stored channel, a newly stored channel, and a changed channel on the screen in another case; And

e) checking and storing the previously stored channel among the changed channels in step d), and then checking whether to store the changed channel and then storing the changed channel. It can be achieved by providing a.

In addition, b-1) if it is determined in step b) that the television is turned on, checking whether the moving mode signal is input by the user, and if the moving mode signal is input, the method further includes the step of step c). This can be achieved by providing a channel search method of a broadcast receiver.

According to the present invention, the channel search and storage for all over-the-air broadcast signals and cable broadcast signals can be easily performed at predetermined time intervals, thereby further improving the convenience of the product.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a broadcast receiver to which the present invention is applied. As shown in FIG. 1, the broadcast receiver to which the present invention is applied includes an antenna 101, a tuner 103, and the tuner 103. The image processing unit 105 for processing the image signal received through the display on the screen, and the audio processing unit 107 for processing the audio signal received through the tuner 103 and output through the speaker, the key The input unit 109 includes a plurality of keys, such as a general channel increase / decrease key, a volume increase / decrease key, and a channel storage key for storing a searched channel. In an embodiment of the present invention, the key input unit 109 is provided with a plurality of conventional keys, but may include a moving mode selection key for automatically executing channel search and storage after moving.

In addition, the control unit 113 of the present invention is provided so that the search and storage of all over-the-air broadcasting and cable broadcasting channels received through the tuner 103 are executed at predetermined time intervals, and the frequency band of the channel desired by the user is searched. It is provided to store in the memory 111. The controller 113 is provided to display a channel stored in the memory 111 on the screen.

In the broadcast receiver to which the present invention is applied as described above, first, corresponding broadcast signals of all over-the-air broadcast and cable broadcast channels receivable through the antenna 101 are tuned through the tuner 103, and the tuner 103 is used. The broadcast signals for all channels tuned by are supplied to the controller 113, and the controller 113 searches for and stores the tuned channel. At this time, when the broadcast receiver is turned on, the tuned channel is displayed on the screen, and when a key signal for storing the channel displayed on the screen is input by the user, the searched channel is stored in the memory unit 111.

The above process is performed for all over-the-air and cable broadcasting channels. When the channel search is completed, it is checked whether a predetermined time (24 hours) has elapsed after the completion of the search, and when 24 hours have elapsed, a channel search is performed for all over-the-air and cable broadcasts. It is checked whether there is a difference between the newly stored channel, and if there is a channel stored before 24 hours, the newly stored channel, and the changed channel are displayed on the screen under the control of the controller 113.

In this case, when the corresponding signal of the storage key is input to the changed channel from the user, the controller 113 stores the channel of the changed channel, in which the storage key is input, in the memory 111.

2 is a flowchart illustrating a channel search process of a broadcast receiver according to the present invention. This will be described with reference to the channel search process.

First, when power is supplied to the broadcast receiver (step 301), channels for all selectable over-the-air and cable broadcasts are searched and stored in the memory unit 111 (step 303).

At this time, the control unit 113 checks whether the current broadcast receiver is turned on (step 305) and displays a message on the screen to check whether to store each tuned channel when the broadcast receiver is turned on (step 307), and the key input unit. When a key signal corresponding to the storage key is input from 109, the displayed channel is stored in the memory unit 111 (step 309).

Through the above process, it is performed for all over-the-air broadcasting and cable broadcasting.

That is, it is checked whether the channel search and storage of all broadcasts through the above process is completed (step 311), and when it is completed, it is checked whether a predetermined time has elapsed after the channel search and storage (step 313), and the predetermined time has elapsed. If it is possible to search for a receivable over-the-air broadcasting and cable broadcasting channels (step 315).

The controller 113 compares the channel stored before the predetermined time with the newly stored channel through the step 309 (step 317).

If there is a difference between the previously stored channel and the newly stored channel through the step 317, the controller 113 displays the previously stored channel, the newly stored channel, and the changed channel on the screen (step 319). If it is determined whether to store the previously stored channel (step 321), and if it is determined that the previously stored channel is to be stored, the previously searched channel is stored (step 323).

However, if the previously stored channel is not stored in step 321, it is checked whether to store the changed channel (step 325), and if it is determined that the changed channel is to be stored, the changed channel is stored (step 327).

On the other hand, if the search is not completed through the step 311, the process proceeds to step 307 after searching for the next channel (step 329).

When a key for selecting a moving mode is set in the key input unit 109, if it is determined in step 305 that the moving mode is selected by the user, and it is determined that the moving mode is selected, the process proceeds to the step 307. do.

As described above, the channel search method of the broadcast receiver according to the present invention can easily perform channel search and storage for all over-the-air broadcast signals and cable broadcast signals at predetermined intervals, further improving convenience of the product. You can.

While the invention has been shown and described with respect to specific preferred embodiments thereof, the invention is not limited to the embodiments described above, and is commonly used in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with knowledge will be able to make various variations.

1 is a diagram showing the configuration of a broadcast receiver to which the present invention is applied.

2 is a flowchart illustrating a channel search process of a broadcast receiver according to the present invention.

<Description of the symbols for the main parts of the drawings>

101: antenna 103: tuner

105: image processing unit 107: audio processing unit

109: key input section 111: memory section

113: control unit

Claims (2)

a) performing channel search and storage for all receivable over-the-air broadcast signals and cable broadcast signals when power is supplied; b) checking whether the television is turned on during the execution of step a) and, if it is turned on, determining whether to store for each channel found in step a); c) if it is determined in step b) that the searched channel is to be stored, checking whether a predetermined time has elapsed since the channel search previously; d) comparing a difference between a previously stored channel when the predetermined time has elapsed and a channel newly searched in step b), and displaying a previously stored channel, a newly stored channel, and a changed channel on the screen in another case; And e) checking and storing whether to store a previously stored channel among the changed channels in step d), and then storing and checking whether to store a newly searched channel. . The method of claim 1, further comprising: b-1) checking that the moving mode signal is input by the user when the television is turned on in step b), and proceeding to step c) when the moving mode signal is input. The channel search method of the broadcast receiver further comprising.