KR970007882B1 - Tuner device - Google Patents

Abstract

Channel selection method and apparatus are provided to select a channel by directly inputting a broadcasting station name by using a NAS(Nation Area Source) code. In case that the user does not know a channel number of a specific broadcasting station, the user can select a desired channel by inputting the broadcasting station name. As a result, the user can easily select a desired one among a plurality of broadcasting stations. The channel selection method includes the steps of: (a)inputting a channel selection data input step; (b)comparing a user input data with a pre-recorded table data; (c) recording the user input data to a temporal memory if the two data are identical therebetween in the step(b); (d) comparing an analyzed broadcasting station code with the data recorded in the temporal memory; and (e) selecting a specific channel according to a comparison result of the step(d), and recodring a channel name and a channel data.

Description

Channel tuning method and apparatus by broadcasting station name

1 is a schematic configuration diagram of a broadcast receiving apparatus according to the present invention.

2 is a flowchart of a channel tuning method according to the present invention.

* Explanation of symbols for main parts of the drawings

10: tuner 20: code analyzer

30: micom 40: memory

50: NV RAM

The present invention relates to a channel tuning method and apparatus, and more particularly, to a channel tuning method and apparatus capable of tuning a channel by directly inputting a broadcast station name using a NAS code.

In order to tune into the desired station while watching a commercially available video cassette recorder and TV, if you use the VS tuner, it sequentially searches from the low channel. In case of using a large number of broadcasting stations, it is difficult to tune into a desired broadcasting station at a time when the actual channel of the broadcasting station to be tuned is not known.

However, when a station transmits its own code to a signal transmitted from a broadcast station and stores the station name and the corresponding code in a memory in advance, the user searches and inputs the desired station name. This problem can be solved if the channel can be tuned directly compared to the memorized channel compared to the code. In addition, for convenience of use, an On Screen Display (hereinafter referred to as OSD) function may be used more conveniently if the status is displayed on the screen for each input step.

Accordingly, an object of the present invention is to provide a channel tuning method and apparatus capable of selecting a channel by directly inputting a broadcast station name in order to solve the problems as described above.

In order to achieve the above object, the present invention provides an input step of inputting channel selection data for inputting a name of a broadcasting station to be tuned by a user, and comparing data input by a user in the input step with data on a table previously recorded. A first recording step of recording the data input by the user in a temporary memory when the data match each other in the first comparison step, and a broadcasting station code and a temporary station code analyzed by selecting a broadcast data input from the outside And a second recording step of selecting a specific channel and recording the channel name and the channel data according to the result compared to the memory.

In order to achieve the above object, there is basically used in the present invention. As a method of adding a unique code to a broadcasting station, there is a NAS (Nation Area Source) code method.

These codes are currently used in European character multicasting. They consist of five digits, the first two digits are the country code, the third digit is the region code, and the remaining two digits are the source code. The country code is the code assigned to each country by the European Broadcasting Commission (eg 1D for Germany), and the area code indicates the region within the country specified by the country code (eg 1 for Frankfurt, 2 for Hamburg, …). Finally, the source code is a code representing a broadcast station (eg 01 represents an ARD broadcast station in West Germany). Thus, if the code is 1D101, it means Frankfurt's ARD station of income, which is a unique code for each station and cannot be used in other stations.

An example of the use of such a NAS code is as follows. For example, if you show a broadcasting program of another broadcasting station (for example, ZDF) among TTX contents of ARD broadcasting, you want to make a reservation recording when you perform VPT (Program reservation using TTX) on the screen. If it is ZDF broadcast but cannot analyze this code, there may be an error that reserve recording ARD broadcast. At present, there are only about 6 stations in Korea, but in Europe, there are more than 30 ~ 40 stations in a country, and some stations are related to each other, and they transmit the contents of related programs. This code is necessary to eliminate the error of recording different channels.

In the present invention, especially in Europe where a broadcast station has more than 30-40, if you want to enter the name of the desired station in the channel, as a solution to the case of not knowing the actual channel of the broadcast station directly enters the name of the station to micom From the table of NAS codes stored in the internal memory, find the code of the relevant station, that is, the code of the type mentioned above, and then continue tuning to tune to the broadcast where the code appears and then store the data in the corresponding channel. To make it possible.

In order to do this, all the NAS code must be stored in the ROM table at the time of installation.

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

1 is a schematic block diagram of a broadcast receiving apparatus according to the present invention. The broadcast receiving apparatus of FIG. 1 is a tuner 10 which receives only a signal of a specific frequency among signals transmitted from a broadcasting station through an external air line and generates an intermediate frequency IF, and codes for analyzing a station code by analyzing the received signal. The analyzer 20 compares the code input by the user with the code analyzed by the user, temporarily stores the data input by the user, and stores the microcomputer 30 and a broadcast station name and code that control the overall operation of the broadcast receiving apparatus. The memory 40 is composed of an NV (Non Volatile) RAM 50 for storing the position channel and the broadcast station or actual channel of the tuned station compared with the memory 40 and the microcomputer 30.

The operation of the apparatus having such a configuration will be described in detail as follows.

When the user presses a channel selection key using the key matrix, the command for the corresponding key is transmitted to the microcomputer 30. The microcomputer 30 receives data about the key and analyzes it to determine whether the content of the input key is related to channel selection. If the input is not related to channel selection, the microcomputer 30 executes a corresponding command. The user inputs a channel name by using an on-screen display function, and stores the channel name and the corresponding code in the temporary memory unit 30b of the microcomputer 30.

When the input is completed by the user, the microcomputer 30 transmits the data to the tuner 10 to tune the corresponding broadcasting station, and analyzes the corresponding broadcasting station code in the code analyzer 20 by analyzing the tuned broadcasting signal. Is transmitted and the code recorded in the temporary storage unit 30b in the microcomputer 30 is read and compared by the comparison unit 30a in the microcomputer 30. The comparison unit compares both data, and if the codes match each other, records the corresponding data in the NV RAM 50.

A channel tuning method according to the present invention which can be applied to the broadcast receiving apparatus as described above will be described using the flowchart of FIG.

In the channel tuning method according to the present invention, the channel selection data input step from step 100 to step 130, comparing the input data of step 140 with the data on the table, the input data recording step of step 150, and the 170th step It comprises a broadcasting station tuning step of steps 190 through 190 and a broadcasting data recording step of steps 200 through 230. This will be described in detail by dividing each step with reference to FIG.

The user inputs a key for channel selection using the key matrix (step 100). However, the key input by the user is converted into a code that can be recognized by the microcomputer 30 after being omitted in the flowchart of FIG. 30) and the microcomputer 30 determines the input code to determine whether the corresponding key is a key related to channel selection. If the key is not related to channel selection, the function of the corresponding key is performed (not shown). In the case of the relevant key, the flow proceeds to step 110.

In operation 110, the following form is displayed on the screen using an OSD function. When the table for channel selection is displayed on the screen,

Select the location channel (P CH) (step 120) and display the name of the station to select the channel up or down by using the character selection key installed on the remote controller. In operation 130, the user selects each character corresponding to the name of the desired broadcasting station and inputs the name. That is, as shown below, in the state where the location channel is selected in step 120, the user inputs the name of the broadcasting station (eg, MBC) to be actually selected.

As described above, when the input of the name of the broadcasting station is completed and the return device is pressed, the microcomputer 30 inputs the code of the broadcasting station and the code input by the user, which are recorded in the ROM table of the memory 40 in which the code of the broadcasting station is input in advance. Compare (step 140). If the broadcasting station name input by the user is not recorded in the table as a result of the comparison, the input data is deleted on the screen displaying the channel selection and the process returns to step 120 again. However, if the comparison results match, the data input by the user is recorded in the temporary memory (step 150).

After the data is recorded, it is determined whether continuous input is to be made (step 160). As such, the process of selecting a broadcast station name repeats steps 120 to 150 a predetermined number of times when there is a lot of data input by the user.

If all data for channel selection is input by the user, a search key for channel selection is input (step 170). The microcomputer transmits the data to the tuner for retrieval (step 180), and tunes the corresponding broadcasting station (step 190), and analyzes the tuned data in the code analyzer 20 and transmits the analyzed data to the microcomputer 30. The code is compared with the code stored in the temporary memory of the microcomputer (step 200).

If the data does not coincide with each other as a result of the comparison, the process returns to step 180. If the data match with each other, the process repeats the above procedure. . At this time, if VS tuner is used on the channel selection screen to indicate memory, characters are indicated by symbol at R CH display position. In case of FS tuner, the actual channel corresponding to the broadcasting station is displayed at R CH display position. It may be convenient to use.

When the search is completed through the search process, the data is stored in the NV RAM. At the same time, the corresponding station code stored in the temporary memory unit is deleted. Therefore, the number of channels to search stored in the temporary memory unit is reduced by one. (Step 220) If the number of channels stored in the temporary storage unit is not 0, it indicates that there are more channels to search. Therefore, the process returns to step 180 again and repeats the above process and becomes 0 of the stored channels. In this case, since there is no more search data, the channel tuning process is terminated.

As described above, when selecting a channel using the channel selection method according to the broadcasting station name according to the present invention, when the channel number of a specific broadcasting station is not known, the channel name can be directly input to select a channel. There is an effect that can give convenience.

Claims (5)

Input step of inputting channel selection data for inputting the name of a broadcasting station to be tuned by the user, a first comparison step of comparing the data input by the user in the input step and the data on the table previously recorded, in the comparison step If the data coincide with each other, a first recording step of recording the data input by the user into the temporary memory, and a second comparing the data recorded in the temporary memory with the analyzed broadcast station code by selecting broadcast data input from the outside. And a second recording step of tuning a specific channel according to the result compared in the comparing step and recording the channel name and the channel data. 2. The broadcasting station as claimed in claim 1, further comprising a step of determining whether input of data by a user will continue if there is data to be tuned after the compared data is recorded in the temporary memory. Channel tuning method by. The channel tuning method according to claim 2, wherein the second comparison step and the second recording step are repeated as many times as the number of times recorded in the temporary memory. The channel tuning method according to claim 1, wherein the broadcast signal data input from the outside includes a NAS code. A tuner 10 for generating an intermediate frequency (IF) by receiving only a signal of a specific frequency from a signal transmitted from a broadcasting station through an external air line, a code analyzer 20 for analyzing a broadcasting station code among signals received from the tuner, The name of the broadcasting station input by the user is compared with the code recorded in the memory 40 by the user through an external input means such as a memory 40 or a key matrix in which a broadcasting station name and a code are set in advance. In the microcomputer 30 and the microcomputer 30 to temporarily store the stored data therein and compare the code analyzed by the code analyzer 20 and the temporarily stored code according to the comparison result and control the overall operation in the device Location channel and broadcast station name of the tuned station according to the comparison result of the code analyzed by the code analyzer 20 and the code stored temporarily Is a broadcast receiving apparatus characterized in that it to tune to a channel by a broadcast station name, and include the NV RAM 50 is a memory for the actual channel.