KR0157558B1 - Memory channel controlling method by using the pip fuction - Google Patents

Abstract

The present invention relates to a method of controlling a channel stored in a television, and Picture-In-Picture for simultaneously displaying two screens, namely, a mother screen and a child screen (= PIP screen) on one receiver. You can use the PIP function to save and delete the channel through the PIP screen while watching the desired broadcasting program on the mother screen. When you sleep, there is an advantage that can be easily stored using the deleted channel information stored in the memory.

Description

Memory channel control method using PIP function

1 is a block diagram showing a memory channel control apparatus using a PIP function according to an embodiment of the present invention.

2 is a screen state diagram for explaining the operation of the storage channel control apparatus of FIG.

3 is a flowchart for explaining a storage channel control method of the present invention.

* Explanation of symbols for main parts of the drawings

10: key input unit 20: micom

25: memory 30: main tuner

35: mother screen video signal processor 40: PIP tuner

45: sub picture video signal processing unit 50: synthesis unit

60: OSD unit 70: CRT

The present invention relates to a method for controlling a channel stored in a telegram, and in particular, a picture-in-picture which simultaneously displays two screens on one receiver, that is, a mother screen and a child screen (= PIP screen). By using the PIP function, you can delete unwanted screens on the PIP screen while watching the desired broadcast program on the mother screen, and use the PIP function to select and save the deleted screens again. It is about.

In conventional televisions, there was a function of deleting and setting a channel which is not desired by a user by operating a channel ADD or ERASE key. However, when trying to delete a channel in this manner, it was not possible to delete another channel while watching a program of a certain channel. In addition, there is a problem that it is not possible to know which channel was previously deleted when trying to see a channel that was deleted after deleting a predetermined channel. In addition, there is a problem in that the channel must be set again because it is erased even when the user presses the delete key by mistake.

Accordingly, an object of the present invention is to provide a PIP function for simultaneously displaying a sub-screen reduced in the vertical and horizontal directions on a mother screen of a television receiver as one of various display functions of a television receiver screen to solve the above problems. In the mother screen of the television set, a memory channel control method using the PIP function that allows the user to delete the channel to be deleted and reselect the deleted channel while watching the current broadcast program as it is. In providing.

In order to achieve the above object, a feature of the present invention is a channel storage / deletion method of a television having a picture-in-picture (PIP) function for displaying a mother screen on its own screen. A mode setting step, when the channel skip mode is set, displaying a deleted or stored channel number and a channel memory state on the mother screen, and displaying a video signal corresponding to the currently selected channel number and channel number on the child screen; The channel deletion / memory step of the child screen for deleting / remembering the channel number displayed on the child screen according to the deletion / memory signal of the channel number and controlling the display of the video signal corresponding to the deleted / memory channel number. And storing information on the channels changed in the channel deletion / memory step, and displaying the stored information on the mother screen. It is in the channel memory control method using the PIP function.

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

1 is a block diagram showing a storage channel control apparatus using a PIP function according to an embodiment of the present invention.

First, a general broadcast reception process will be described before describing a memory channel control apparatus using a PIP function capable of simultaneously displaying two screens. The user selects a desired broadcast channel through the key input unit 10. According to the channel selection, the key input signal SKey is input to the microcomputer 20. The microcomputer 20 supplies the data Ds according to the channel selection signal, the clock CLK, and the enable signal ENB to the main tuner 30. The main tuner 30 tunes a broadcast signal for a desired channel by adjusting the frequency of radio waves received through the antenna. The mother screen image signal processing unit 35 processes and outputs a broadcast signal supplied from the main tuner 30 so as to be displayed on a screen of a cathode ray tube (hereinafter referred to as a CRT) 70. do. This signal is displayed on the screen of the CRT 70 via the combining unit 50. The electronic tune-in TV using the microcomputer performs a memory process of storing a desired channel in the memory 25 by pressing an ADD or ERASE key, and then performing channel up / down after performing the channel memory process. When the UP / DOWN key is input, only the memorized channel is up and down.

Now, a process of controlling the stored channel using the PIP function of the present invention will be described. In this case, the above-described parent screen broadcasting reception process is performed in the same manner. The user operates the key input unit 10 to select a channel skip mode. Here, the reason for selecting the channel skip mode is as follows. The television receiver screen has various display functions because one of them is set to control the stored channel in the channel skip mode. The key input signal SKey according to the channel skip mode is input to the microcomputer 20. Here, the key input signal SKey according to the channel skip mode includes a function selection signal for channel deletion (ERASE) and a reselection (ADD) of the deleted channel (ERASED), and a channel selection signal for selecting a predetermined channel. have. The microcomputer 20 supplies the data Ds, the clock CLK, and the enable signal ENB according to the above-described function selection signal and channel selection signal to the PIP tuner 40. The PIP tuner 40 tunes a broadcast signal for a desired channel by adjusting the frequency of radio waves received through the antenna. The sub picture video signal processor 45 compresses and outputs a broadcast signal applied from the PIP tuner 40 by a predetermined size in a horizontal and vertical direction by a known technique to display the broadcast signal applied to the sub picture of the CRT 70. . In addition, the microcomputer 20 reads out channel data stored in the memory 25 and outputs a character display control signal indicating a channel and a channel state to the OSD unit 60. These signals are input to the combining unit 50, and the combining unit 50 synthesizes the low screen image signal applied from the mother screen image signal processing unit 45 in synchronization with the horizontal and vertical synchronization signals. In addition, the synthesizing unit 50 also synthesizes an OSD character display control signal applied from the OSD unit 60. The synthesized signal is applied to the CRT 70 to be displayed as a PIP screen signal in which a child screen is simultaneously displayed at a predetermined position on the mother screen.

2 is a screen state diagram for explaining a storage channel control method using the PIP function of the present invention. As shown in FIG. 2, when the user sets the channel skip mode, the CRT 70 displays the sub picture S reduced in the vertical and horizontal directions on the parent screen M. FIG. In addition, a part of the mother screen displays the channel number and the channel memory state as OSD characters. At this time, the current program is displayed on the parent screen as it is. P06, P07, P09, P11, and P13 of the mother screen represent channel numbers, and the channel memory status is displayed in each of these channel numbers. For example, the P06 channel is stored and the P07 channel is erased. On the other hand, the dotted line portion of the mother screen (M) is to display the program currently displayed on the child screen (S). In addition, the channel of the selected number is displayed in a predetermined section of the sub-screen S so that the user can select whether or not to erase. In FIG. 2, at the bottom of the screen, a selection key (▲ ▼) for selecting a channel displayed on the sub screen (S) and a setting key (+,-) for erasing or storing the selected channel, etc. ) And the EXIT (@) key signal to exit the channel skip mode is indicated by the OSD text. In addition, the OSD character for the deleted channel is also displayed, so that the user can confirm and delete the unnecessary channel or remember and reset the channel to be viewed again among the supported channels.

The operation of the channel skip apparatus using the PIP function of the present invention as described above will be described in more detail with reference to the flowchart of FIG. 3.

3 is an operation flowchart of the microcomputer 20 for explaining the channel skip method of the present invention.

First, the controller 20 determines whether a key signal Skey input from the key input unit 10 is a skip mode selection signal (step 310). In the skip mode, information about preset channels is displayed as an OSD text (step 315). Next, the channel selected by the key input signal Skey of the key input unit 10 among the channels displayed as OSD characters on the screen of the CRT 70 is displayed on the sub screen S (step 320). In operation 330, it is determined whether an up / down key for selecting a channel to be displayed on the sub-screen S is input from the key input unit 10 (step 330). When the up (▲) key signal is received from the key input unit 10, a broadcast program of one higher channel of the channel currently displayed on the own screen is displayed on the own screen (step 340). On the other hand, when the down ▼) key signal is received from the key input unit 10, a broadcast program of one lower channel of the channel displayed on the own screen is displayed on the own screen (step 350). Next, the controller 20 determines whether setting keys (+,-) for erasing or storing the corresponding channel displayed on the CRT 70 are input from the key input unit 10 (step 360). ). If the control unit 20 determines that the setting key signals (+,-) are applied, the controller 20 deletes the channel currently displayed on the own screen according to the applied setting signal (-key signal) or selects and deletes the deleted channel again. Signal) (step 370). As shown in FIG. 2, this erased channel is stored in the memory 25. As shown in FIG. However, if the setting key signal is not applied, it is determined whether to exit the current skip mode (operation 380). When the EXIT key signal is applied from the key input unit 10 to cancel the channel skip mode, the channel skip mode is exited. However, if the EXIT key signal is not applied, the flow returns to step 330 to repeat the step.

We will briefly explain the channel skip method using the PIP function of the present invention by taking 6, 7, 9, 11 channels, etc., which are commonly used in everyday life. When the user presses the UP key of the key input unit 10 while the broadcast program of channel 6 is currently displayed on the own screen S, the broadcast program of the seventh channel P07 is displayed on the own screen S. When the user wants to delete channel 7 displayed on the sub screen S, the user presses the-key of the key input unit 10 to delete it. At this time, the OSD display of the deleted channel is converted from P07 ADDED to P07 ERASED on the mother screen. Therefore, all information about the deleted channel is also stored and displayed as OSD text. When you want to memorize the deleted channel again, press + on the key input unit 10 to convert the selected channel from P07 ERASED to P07 ADDED. do.

Accordingly, the present invention utilizes a PIP function for simultaneously displaying the sub-screen reduced in the vertical and horizontal directions on the mother screen of the television receiver, while watching the broadcast program currently being viewed on the screen of the television receiver as it is, through the sub-screen. You can set and delete the desired channel by changing. In addition, since the information on the deleted channel is stored in the memory as it is, when the user wants to remember the deleted channel later, it is convenient for channel setting by displaying on the mother screen so that it can be recognized at a glance.

Claims (4)

A channel storage / deletion method of a television having a picture-in-picture (PIP) function for displaying a mother screen on its own screen, comprising: a channel skip mode setting step (1) of performing channel storage and channel deletion; If the channel skip mode is set, displaying the deleted or stored channel number and channel memory state on the mother screen, and displaying a video signal corresponding to the currently selected channel number and channel number on the mother screen; The channel deletion / memory step of the child screen which controls the display of the video signal corresponding to the deleted / memory channel number and deletes / remembers the channel number displayed on the own screen according to the deletion / memory signal input of the channel number ( 3); And storing (4) information on the channels changed in the channel deletion / memory step and displaying the stored information on the mother screen. The channel deletion / memory step (3) of the own screen further comprises: a first display of one higher channel of the current channel displayed on the own screen on the own screen when a first key input number is applied; Display step; And a second display step of displaying one sub-channel of a current channel displayed on the sub-screen on the sub-screen, when a second key input signal is applied. 2. The method of claim 1, wherein the channel deletion / memory step (3) in the child screen comprises: a channel data state determination step of determining to delete and store a channel set in the child screen; And when a third key input signal is applied according to the determination result of the channel data state determining step, deleting the channel displayed on the child screen, and when the fourth key input signal is applied, information about the deleted channel is stored in the memory. A memory channel control method using a PIP function comprising a channel data adjustment step of reading from and re-memorying the data. The memory using the PIP function according to claim 1, wherein the step (2) displays the currently watched program on the mother screen and simultaneously displays the deleted or memorized channel number and channel memory status as OSD characters. Channel control method.