KR20000021577A - Method for displaying name of broadcasting company in selecting channel by automatic tuning system - Google Patents

Abstract

PURPOSE: A method for displaying name of broadcasting company in selecting channel by automatic tuning system is provided to solve the prior problems such as the controlling newly selected channel after the selection operation is completed. CONSTITUTION: A method for displaying name of broadcasting company in selecting channel by automatic tuning system comprises a first step determining the presence of ATS(automatic tuning system) code in the channel frequency presently received, a second step detecting the information related to the name of broadcasting company among the ATS codes determined in the first step, a third step displaying the information detected in the second step on a monitor as OSD(on screen display) characters, and a forth step repeating the steps 1-3 in accordance with prescribed request.

Description

Method for station name display at channel tuning by automatic tuning system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a station name when automatically storing a channel in a television. In particular, in Europe, where a program number and a real channel are often confused, an automatic tuning system (ATS) is currently being searched for. The present invention relates to a method for displaying a broadcaster name when tuning a channel by an automatic tuning system for displaying a broadcaster name of a channel so that an inspector, an installer, or a user can recognize the broadcaster of a channel that is currently stored.

In general, as a method of tuning and receiving a broadcast signal, a frequency synchronization (FS) method is used in a National Television System Committe (NTSC) and a voltage synchronization (VS) method is used in a sequential couleur a memoire (SECAM).

In the FS system, an AFT (Automatic Fine Tuning) voltage is used to tune a tuner of a receiver to a carrier frequency of each channel. That is, when the PLL data for tuning the frequency of each channel is stored in the microcomputer internal memory of the television receiver, and the user selects a predetermined channel by key operation or the like, the microcomputer applies the PLL data of the selected channel to the tuner. A phase lock loop is formed in the tuner to control the oscillation frequency of the voltage controlled oscillator according to the PLL data to receive the frequency signal of the channel selected by the user.

On the other hand, in the VS method, the band (VHF LOW, VHF HIGH, UHF) switching voltage is selected, and then the tuning voltage with the broadcast signal and the band switching voltage are sequentially increased while increasing the tuning voltage from the reference tuning voltage in a predetermined step unit. Channel tuning is performed while storing the serial number, and it can be implemented at a lower cost than the FS method.

At this time, the FS system or the VS system is not limited to the NTSC broadcasting system or the SECAM broadcasting system, and in Europe, the VS system is widely used in PAL or SECAM broadcasting.

The VS method will be described in detail. In the VS method, the tuned channel number is not a unique channel number assigned to a broadcasting station, but a sequential sequential serial number, so that a user can easily distinguish between channels in the UK or Europe. In the region, for example, VPS, PDC, etc., carry channel information including a broadcast frequency, a broadcast channel, a broadcast station name, etc. in a predetermined section (for example, any horizontal line in the vertical blanking period) of the broadcast signal. It could transmit, detect and store it, and the user could distinguish broadcasting stations by the detected broadcasting station names.

However, in the VS method, since a serial number is used as a channel number, a unique channel number assigned to an original broadcasting station and a serial number assigned to channel selection are confused, causing inconvenience to users when switching channels.

Therefore, a storage method as shown in FIG. 1 is attached, which is a conventional technique for solving the above-mentioned problems.

Referring to the conventional storage method illustrated in FIG. 1, if it is determined in step S101 that the user has selected the automatic search function, the process proceeds to step S102. In step S102, it is determined whether a code by an automatic tuning system exists in the currently received broadcast channel.

If it is determined in step S102 that the code by the automatic tuning system is present, the process proceeds to step S103, stored sequentially from program number 1, and the flow proceeds to step S104 to determine whether the search for the entire frequency band is completed.

If it is determined that the code search by the automatic tuning system has not been completed for all frequency bands, the process proceeds to step S102 again and the above-described process is performed again.

On the other hand, if it is determined in step S104 that the search of the code by the automatic tuning system has been completed for all frequency bands, the process proceeds to step S105 where the frequency channel where the code by the automatic tuning system is not searched is stored after the data stored in the step S103. Store sequentially from the low frequency band to the storage area of.

Thereafter, in step S106, the broadcast station name of the stored channel is displayed based on the stored order in step S105. In this case, since the broadcasting station name is recorded in the ATS code, the broadcasting station name can be recognized through the tuning operation.

In the conventional method of performing the automatic tuning function based on the above-described procedure, when the automatic tuning function is selected when the initial television set is set, the user or the inspector does not recognize the state of the channel currently tuned in. A problem arises in that a series of processes for removing unnecessary or incorrectly recognized broadcast channels are performed with reference to the broadcast station name displayed after the termination.

Also, during the tuning operation, a problem arises in that it is impossible to know whether the system is operating normally.

An object of the present invention to solve the problems of the prior art as described above is to display the station name of the channel currently being searched during the operation of the automatic tuning system (ATS) in Europe where there is a lot of confusion between program numbers and actual channels. The present invention provides a method for displaying a broadcaster's name at the time of channel selection by an automatic tuning system for allowing an inspector, an installer, or a user to recognize a broadcasting station of a channel that is currently stored.

1 is an exemplary view for explaining a channel storage process by a conventional automatic tuning system

2 is an exemplary configuration diagram of a television receiver to which the present invention is applied.

3 is a flowchart illustrating an operation of displaying a broadcaster name during channel selection by the automatic tuning system according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: key input unit 20: microcomputer

30: tuner 40: video / audio signal processing unit

50: OSD 60: Monitor

70: speaker 80: ATS code decoder

90 memory

A feature of the present invention for achieving the above object is a channel tuning method for storing a channel in which an auto-tuning system code is inserted into a broadcast signal in a television having a VS-tuned tuner, the channel frequency currently received when performing the auto-tuning mode. A first step of determining whether a code by the automatic tuning system exists in the second step, a second step of detecting information related to a broadcast station name among the codes determined to be present in the first step, and a broadcasting station detected in the second step A third step of displaying information related to the name on the monitor CRT as an OSD character, and a fourth step of performing the above-described process after performing the request if a specific request exists while the third step is performed for a predetermined time. It is to include.

First, briefly look at the technical idea to be applied in the present invention, by displaying the name of the station currently being tuned during tuning, the user or inspector recognizes this to eliminate the broadcast channel having a problem such as unnecessary or weak signal in advance I want to be able to.

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

2 is a schematic block diagram of a television employed in accordance with a preferred embodiment of the present invention, which includes a key input unit 10, a microcomputer 20, a tuner unit 30, a video / audio signal processing unit 40, and an OSD unit. 50, a monitor 60, a speaker 70, an ATS code decoder 80 and a memory 90.

In this configuration, the key input unit 10 is provided with a plurality of keys for generating a user request signal for controlling the operation of the television receiver, and outputs a key signal corresponding to the user's key operation, the input is typically remote A key signal carried on a predetermined infrared carrier wave is transmitted / received using a remote controller, and applied to a microcomputer 20 to be described later.

Then, the microcomputer 20 is driven based on the constant power supply based on the data provided from the memory 80 to be described later, and the tuner unit 30 and the video / audio signal processor based on the key signal from the key input unit 10. Selectively controlling the 40 and the OSD unit 50 to control the overall operation of the television. When a key signal according to the automatic tuning request is applied from the key input unit 10, a broadcast channel for the entire broadcasting frequency is based on the ATS method. Tune to and receive the broadcaster name corresponding to the broadcast channel currently being tuned from the ATS code decoder unit 80 to control and display the OSD unit 50.

Meanwhile, the tuner unit 30 outputs a broadcast signal received by being tuned to a corresponding channel corresponding to the control of the microcomputer 20.

In addition, the video / audio signal processing unit 40 separates the broadcast signal applied from the tuner unit 30 into a video and audio signal under the control of the microcomputer 20 and processes the video signal into a signal capable of display and output, respectively. Are output to the OSD unit 50, and audio signals to the speaker 70, respectively.

In addition, the OSD (On Screen Display) unit 50 is a device for processing text on a television screen, and reads a text signal corresponding to the control of the microcomputer 20 to display the video / audio signal to be displayed at a predetermined screen position The synthesizer outputs a video signal or a blue-back signal (the background color can be set to a color other than blue) applied from the processing unit 40.

In addition, the ATS code decoder 80 is an ATS code inserted into a predetermined position within the vertical blanking period of the broadcast signal received from the tuner 30 under the control of the microcomputer 20, that is, the broadcast program related information. Read it and apply it to the microcomputer 20.

Lastly, the memory 90 stores various data according to the operation of the television receiver, and stores information of the tuned channel (for example, program number, broadcasting frequency, broadcasting station name, ...).

Referring to Figure 3 attached to the broadcast station name display process when the channel tuning by the automatic tuning system according to the present invention configured as described above as follows.

In step S201, the microcomputer 20 determines whether the user requests a function according to automatic tuning through the key input unit 10. If it is determined that the automatic search operation is requested, the process proceeds to step S202.

In step S202, the microcomputer 20 scans the entire broadcast frequency band, and is inserted at a predetermined position within the vertical blanking period of the broadcast signal received from the tuner unit 30 through the ATS code decoder unit 80. ATS code, that is, broadcast program related information, is detected.

In this case, when the ATS code is detected, the microcomputer 20 recognizes the automatic tuning channel based on the ATS code and proceeds to step S203, and monitors the name of the broadcasting station included in the detected ATS code through the OSD unit 50. (60) The screen is displayed for a predetermined time (for example, 1 second).

Thereafter, in step S204, the user determines whether an arbitrary request is input through the key input unit 10, that is, whether an interrupt is generated, and if it is determined that an interrupt is present, the process proceeds to step S205, for example, the present tuned. A function such as deleting data storage for the channel is performed and the process proceeds to the step S202 again.

While performing channel tuning through the above-described series of processes, it is determined whether the search for all frequency bands is completed through the process of step S206, and when the channel tuning operation for all frequency bands is judged to be completed, the process ends. If it is determined that the channel tuning operations for all frequency bands have not been completed, the process proceeds to step S202 to repeat the above process.

After providing a method for displaying a broadcaster name during channel tuning by the automatic tuning system according to the present invention operating as described above, a problem in the prior art in which a broadcast station name is displayed after the automatic tuning of a channel is completely terminated. It is possible to solve the problem of not knowing whether the system is operating normally during the adjustment of the newly tuned channel or during the tuning operation.

Claims (1)

Claims [1] A method for pre-selecting and storing a channel having an automatic tuning system code inserted into a broadcast signal in a television having a VS (Voltage Synchronizing) tuner. A first step of determining whether an ATS code by the automatic tuning system is present in a channel frequency currently received when performing the automatic tuning mode; A second step of detecting information related to a broadcasting station name from the ATS code determined to exist in said first step; A third step of displaying information relating to the name of the broadcasting station detected in the second step on the monitor CRT as OSD text; And Displaying the name of the broadcaster when channel selection by the automatic tuning system, characterized in that it comprises a fourth step of performing the request and re-executing the above process if the user's specific request is present while the third step proceeds for a predetermined time Way.