KR0130636B1 - Liking broadcasting program automatic tuning method and apparatus using a pilot signal - Google Patents

Abstract

Disclosed is a method and apparatus to automatically tune a favorite broadcasting program utilizing a pilot signal. The apparatus comprises a manipulator, a microcomputer, a tuner, a signal processor, a character signal generator and a display. The manipulator generates a program selection signal and data according to user's input. The microcomputer executes a selected program according to the program selection signal, data and a pilot signal. The tuner receives a broadcasting signal of selected channel. The signal processor processes and decodes the received broadcasting signal. Thereby, the channel is stored when the power turns off, and the favorite broadcasting program of stored channel is displayed when the power turns on.

Description

Automatic Tuning Method of Preferred Broadcast Program Using Pilot Signal and Its Apparatus

1 is a block diagram showing an embodiment of a preferred broadcasting program automatic tuning apparatus using a pilot signal according to the present invention.

2 is a flow chart for explaining the first operation of the microcomputer in the apparatus of FIG.

3 is a flow chart for explaining the second operation of the microcomputer in the apparatus of FIG.

4 is a flow chart for explaining the third operation of the microcomputer in the apparatus of FIG.

* Explanation of symbols for main parts of the drawings

11: control panel 12: micom

13 tuner 14 pilot signal detection unit

15: signal processor 16: OSD block

17: mixer 18: display unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically tuning a preferred broadcast program using a pilot signal, and an apparatus thereof, and more particularly, to automatically tune a channel corresponding to a user's favorite broadcast program when driving power is supplied to a television receiver. The present invention relates to a method for automatically tuning a preferred broadcast program using a pilot signal and a device for displaying the same.

In the related art, when a user drives a product with a built-in tuner such as a television or a radio, a channel used previously is stored as it is and is selected. Thus, the user has an inconvenient problem of finding a desired channel by searching for a favorite program using a channel selection key.

Accordingly, an object of the present invention is to assume that each broadcasting station assigns and transmits a specific value equally according to each program type, and to pre-store a user's favorite program to automatically tune and display the corresponding channel when the power switch is driven. The present invention provides a method for giving a user channel convenience.

Another object of the present invention is to provide an apparatus for implementing a method for automatically tuning a preferred broadcast program using the above-described pilot signal.

The object of the present invention is to provide a program selection preference and a desired data for selecting a predetermined program embedded in the receiver in a broadcast receiving apparatus for tuning a broadcast channel and displaying the tuned channel. Selecting a channel from the microcomputer and the microcomputer that performs a calculation of the selected program in response to a control unit, a program selection signal applied from the control unit, and a pilot signal applied from the data and pilot signal detection unit, and generates a control signal accordingly. A tuner that tunes a broadcast signal for a selected channel by receiving the data according to the data, and a pilot signal detector for detecting and applying a pilot signal, which is a broadcast program identification signal added to the broadcast signal of the selected channel applied from the tuner, to the micom. And broadcasting of the selected channel applied from the tuner. A signal processor for restoring a call, means for generating a text signal according to the program in response to a control signal applied from the microcomputer, and means for superimposing the text signal on an output signal of the signal processor and displaying the text signal. do.

Another object of the present invention is to add a same identification signal to a broadcast program of the same kind for each broadcasting station, and to automatically tune a user's favorite broadcast program by using the identification signal. Setting a priority according to the operator's preference, tuning the broadcast signal of the selected channel in response to a control signal for selecting a predetermined effective channel, and identifying an identification signal added to the tuned broadcast signal. Detecting whether there is a channel corresponding to a broadcast program of which priority is set by comparing the detected identification signal with a unique value of the broadcast program of which priority is set, and the broadcast program of which priority is set. If there is a channel corresponding to, the channel data and priority are saved. Obtaining a channel corresponding to a next priority, restoring the tuned broadcast signal, receiving channel data corresponding to the selected priority, outputting a text signal, and outputting the text signal to the restored signal. Is superimposed and displayed.

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 preferred broadcasting program automatic tuning apparatus using a pilot signal according to the present invention. The apparatus of FIG. 1 includes an operation unit 11 for generating a key operation signal Skey through a remote control or a key input means attached to a television, and a key operation signal Skey input from the operation unit 11; Microcom 12 for controlling channel selection by receiving a specific value (hereinafter, referred to as a pilot signal) assigned to each broadcasting station according to each program type, and a channel line international language signal (CTLch) supplied from the microcom 12. Tuner 13 for tuning a desired broadcast station channel according to the frequency of the radio wave, and a pilot signal detector 14 and tuner 13 for detecting a pilot signal among broadcast signals of the tuned channel supplied from the tuner 13. Coordinate points and data (DOSD) to be displayed on the screen from the signal processing unit 15 and the microcomputer 12 to restore the broadcast signal (DCH) of the tuned channel supplied from To control the display OSD block 16 for outputting a signal, a mixer 17 for superimposing a text signal applied from the OSD block 16 to the output signal of the signal processor 15, and a signal applied through the mixer 17 And a display unit 18 for displaying on the screen.

In FIG. 1, when the user applies a key operation signal Skey for determining and storing a priority for a preferred broadcast program through the operation unit 11, the microcomputer 12 transmits a broadcast program menu to the OSD block 16. FIG. The control signal (DOSD) is supplied to display the number, priority setting cursor on the screen. The OSD block 16 supplies corresponding OSD text data to the display unit 18 through the mixer 17 according to the control signal (DOSD). The display unit 18 shows the OSD character data on the screen as shown in the following screen state so that the user can select the priority by using the key input means of the operation unit 11.

[Screen State Diagram]

The screen state diagram as described above allows the user to input the priority by displaying the character information on the screen when the preferred program selection key is applied when the power switch of the television is turned on. If a priority is selected, it is stored in a predetermined storage location in the microcomputer 12. When the user turns off the power switch after watching television, the microcomputer 12 checks whether the priority is set. If the priority is not set, the previously watched channel is memorized until the next power switch is turned on, and when it is turned on, the control signal CTLCH is supplied to the tuner 13 to tune to the previous channel. The tuner 13 tunes the channel to the signal processor 15. The signal processor 15 reproduces the broadcast signal of the tuned channel as an original signal and displays it through the mixer 17.

On the contrary, if the priority is set, the microcomputer 12 supplies the control signal CTLCH to the tuner 13 so that broadcasting stations can tune to the effective channels in order. The tuner 13 tunes a channel corresponding to the control signal CTLCH by adjusting the frequency of radio waves received through the antenna. The pilot signal detector 14 detects a pilot signal among broadcast signals of the tuned channel applied from the tuner 13. The microcomputer 12 receives the pilot signal PDET detected from the pilot signal detection unit 14 and checks whether it is equal to a specific value of each broadcast program according to priority. If it is the same, the priority value and the channel number are stored, and if it is not the same, other channels are repeatedly tuned repeatedly to obtain and store the channels corresponding to the program whose priority is set.

At this time, when the power switch is turned on (ON), the microcomputer 12 checks whether the priority is set, and if it is not set, controls the previously watched channel through the tuner 13 to be displayed on the screen. . On the contrary, if it is set, the channel data stored in correspondence with the priority is extracted from the first priority and supplied to the tuner 13. The tuner 13 then tunes the corresponding channel and supplies it to the signal processor 15. The signal processor 15 receives the broadcast signal DCH of the channel tuned from the tuner 13 and processes the signal to reproduce the original signal. At this time, the microcomputer 12 supplies a control signal (DOSD) to the OSD block 16 to display the remaining channels that have not been tuned on the screen, if several channels are provided in the priority. The OSD block 16 outputs corresponding character data in response to a control signal (DOSD) applied from the microcomputer 12. The mixer 17 superimposes and outputs the text signal applied from the OSD block 16 on the output signal of the signal processor 15. The display unit 18 displays a signal applied through the mixer 17 on the screen, thereby informing the user of another channel corresponding to the same menu as the current broadcast program.

FIG. 2 is a flowchart illustrating the operation of the microcomputer in the apparatus of FIG. 1 to set and store a priority to a broadcast program preferred by a user in a power switch driving state.

In FIG. 2, the microcomputer 12 checks whether the priority selection key signal Skey is applied through the operation unit 11 (first step). If the priority selection key is authorized, it is checked whether the priority setting flag is set (step 2). When the priority setting flag is set, that is, when the priority selection key signal is applied in the priority selection mode, the priority setting flag is changed to the clear state (step 3). End the operation. If the priority setting flag is not set, that is, if the priority selection key signal is applied in the non-priority selection mode, change the priority setting flag to the setting state and set the priority key counter value to 0. (Step 4). It is again checked whether the priority setting flag is set (step 5). If the priority setting flag is not set, the operation ends. On the contrary, if the priority setting flag is set, that is, the number key of the corresponding broadcast program is applied in order to determine the priority from the outside in the state of prioritization mode with the priority selection key applied immediately before. Check (Step 6). If the numeric key is authorized, increase the priority key counter value by one (step 7). Check if the value of the increased priority key counter is greater than or equal to 6 (five examples of the menu of the broadcast program) (step 8). If the priority key counter value is less than 6, the number of the selected broadcast program is stored in the input order and the process returns to step 6 again and repeated. Check if the priority key counter value is greater than or equal to 6 (step 8), and if the priority key counter value is greater than or equal to 6, the operation ends. Check whether the numeric key is authorized from the outside (step 6), and if the numeric key is not authorized, the operation is terminated as it is. It is checked whether the priority selection key signal Skey is applied (step 1), and if not, the process proceeds to step 5 to perform an operation.

FIG. 3 is a flowchart showing the operation of the microcomputer in a state where the power switch on the receiver is turned off in the apparatus of FIG.

In FIG. 3, the microcomputer checks whether a priority is set for each broadcast program (step 11. If the priority is not set, the operation ends. If the priority is set, the channel is initialized (Fig. 12). Outputting a channel value so that an effective channel having a broadcast station can be tuned through the tuner (step 13), and a specific value representing a corresponding broadcast program detected in a broadcast signal of a tuned channel applied from the tuner, The pilot signal is applied (step 14) and the unique value of the pilot signal and the priority setting value are compared to check whether it matches (step 15.) If it matches, the priority and channel number are stored (step 16). Increase the channel value by 1 to get the value of the next valid channel (step 17.) Check if the current valid channel is greater than the last valid channel (step 18). The fee. Not greater performs return repeatedly to the step 13. If the priority ranking as compared to the set value and the pilot signal value is performed (the step 15). If they do not match, repeat, return to the step 17.

4 is a flowchart of a microcomputer that automatically displays a user's favorite program on the screen as soon as the power switch is switched from an off state to an on state in the apparatus of FIG.

In FIG. 4, the microcomputer checks whether priority is set (step 21). If the priority is not set, the previously tuned channel value is supplied to the tuner (step 22). End the operation. If the priority is set, set the program corresponding to the first priority among the priorities as the starting point (step 23), read the stored priority and channel value from the priority memory (step 24), Checks whether there is a channel corresponding to the set broadcast program (step 25), and if there is a channel corresponding to the priority set broadcast program, selects a channel that performs the best tuning among the channels and outputs it to the tuner. The broadcast signal of the channel tuned on the screen can be displayed, and OSD processing is performed on the remaining channels (step 26). Check whether there is a channel corresponding to the broadcast program whose priority is set (step 25). If not, check whether the current priority is the last priority (step 27). The priority is found (step 28), and the process returns to step 25 to repeat. If the current priority is the last priority, the previous used channel is output (step 29), and the operation execution ends.

As described above, the user's preferred broadcasting program automatic tuning method and the apparatus using the pilot signal according to the present invention by giving a specific value to the same type of program for each broadcasting station and transmits the desired program and The program transmitted on the current channel can be compared to automatically tune the channel without performing the channel up / down function, thus providing the user with the convenience of channel tuning. Moreover, it is expected to be widely used in industrial applications as it can be applied to all products incorporating tuners.

Claims (5)

A broadcast receiving device for tuning a broadcast channel and displaying the tuned channel, the broadcast receiving device comprising: a control unit for applying a program selection signal and desired data for selecting a predetermined program embedded in the receiving device: applied from the control unit A microcomputer that performs the operation of the selected program in response to the program selection signal and the pilot signal applied from the data and pilot signal detection unit, and generates a control signal according to the following: Micom receives data according to the channel selection from the micom to the selected channel. A tuner for tuning a broadcast signal for a broadcast signal, a pilot signal detection unit for detecting a pilot signal which is a broadcast program identification signal added to a broadcast signal of a selected channel applied from the tuner, and applying the pilot signal to the microcomputer, A signal processor for restoring a broadcast signal: Means for generating a text signal according to the program in response to a control signal applied from a microcomputer; and means for superimposing and displaying the text signal on an output signal of the signal processor; Device. A method for adding a same identification signal to a broadcast program of the same type for each broadcast station, and automatically selecting a broadcast program that a user prefers by using the identification signal, wherein the broadcast program is selected according to the operator's preference. Setting priority: tuning a broadcast signal of a selected channel in response to a control signal for selecting a predetermined effective channel: detecting an identification signal added to the tuned broadcast signal: the detected identification signal And checking whether there is a channel corresponding to the broadcast program whose priority is set by comparing the unique value of the broadcast program whose priority is set: if there is a channel corresponding to the broadcast program whose priority is set, the corresponding channel data and priority Saves the rank, if there is no corresponding channel then the channel with the next priority Obtaining: Restoring the tuned broadcast signal: Pilot receiving a channel data corresponding to the selected priority and outputting a text signal and superimposing and displaying the text signal on the restored signal Automatic program tuning method using signals. The method of claim 2, wherein the setting of the priority comprises the steps of: displaying a broadcast program menu on a screen when a key signal for setting a priority for a desired broadcast program is applied from the outside in a driving power state; And storing the priority data set according to the display state on the screen in a predetermined position in a received order. 4. The method of claim 3, wherein the driving power is turned on or off according to whether power is supplied to the display means. 3. The method of claim 2, wherein the broadcasting signal tuning step includes tuning a broadcast signal of preset effective channels in a driving power-off state and when a channel corresponding to the broadcasting program whose priority is set in the driving power-on state exists. And tuning a broadcast signal, and if there is no corresponding channel, tuning a broadcast signal of a previous used channel.