KR19980084511A - How to display VSI's automatic channel search information - Google Patents

Abstract

The present invention relates to a method for displaying automatic channel search information of VSI, and to properly display channel search information at a glance by displaying the state on which the automatic channel matching operation of VSI is performed on an OSD screen.

To this end, the present invention provides a first step of designating an initial channel to be automatically searched while displaying all channel numbers on the OSD screen by setting the size of the channel to be automatically searched according to the broadcast type when the automatic channel fitting mode is set; In the second step, an arbitrary mark is given to each channel number on the display screen of the first step to repeatedly display the current search progress state and the memory / skip state of the corresponding channel as a result of the channel search. Characterized in that made.

Description

How to display VSI's automatic channel search information

The present invention relates to a method of properly displaying a state in which automatic channel matching is performed on a VSI, and more particularly, a state currently being searched for a channel when the automatic channel matching mode is set, and a channel and a memory to be memorized. Each channel that is not skipped is separately displayed on the on-screen display (hereinafter referred to as OSD) screen so that the current progress of the automatic channel alignment mode can be immediately informed so that channel search information can be checked at a glance. The present invention relates to a method for displaying automatic channel discovery information of VSI.

In general, in order to perform the automatic channel fitting function, the conventional VSI includes a phase locked loop (PLL) IC, a frequency tuning circuit, a local oscillator, a frequency synthesis circuit, and the like, through the antenna as in the embodiment of FIG. A tuner unit 10 which selects a desired channel by a frequency tuning voltage from a high frequency (RF) signal, and provides synchronization to a microprocessor by separating a video signal from a broadcast signal of a channel tuned by the tuner unit, And a video / audio signal processor 20 for outputting video / audio signals.

In addition, the tuner 10 controls the tuner 10 to output a frequency tuning voltage, and detects the presence / absence of a synchronization signal provided from the video / audio signal processing unit 20 to determine the presence / absence of a broadcast signal, and to select a desired channel. The microprocessor 60 includes a microprocessor 60 for controlling a series of channel selection operations for executing channel fine tuning by executing automatic fine tuning (AFT) by window searching.

In addition, a key input unit 40 for interfacing the microprocessor and the user, an OSD processing unit 30 for generating characters according to the OSD control signal of the microprocessor, and a memory unit 50 for storing channel data, etc. Consists of including.

The conventional automatic channel matching operation performed in VSI of such a configuration is performed by pressing the function selection key included in the remote control or the set in order to adjust the channel to the OSD menu screen. It is programmed to display a series of OSD screen output operations, starting with channel 2 and moving up by channel one by one in the OSD screen.

That is, as shown in the flowchart of FIG. 2A, the microprocessor 60 first determines whether a function selection key is input by scanning a key input unit, and when the function selection key is pressed, the clock alignment, the scheduled recording / cancellation, or the channel is as shown in Table 1 below. The OSD displays a menu screen on which you can select customization or other functions, and waits for user selection.

TABLE 1

At this time, if 3 of the digits are input by the user, the antenna input or general broadcasting and general broadcasting → cable broadcasting or cable broadcasting can be selected as shown in Table 2 below. Again waiting for the user to make a selection.

TABLE 2

When the user selects the automatic channel alignment mode by pressing the digit key 2 of the key input unit in the channel alignment guide screen display state (Y branch of S212), the microprocessor 60 automatically selects a channel from the initial channel value for automatic channel search. Search and store the channel with the video signal in the memory unit 50 (S213), and display a message such as automatically adjusting the channel with the currently memorized channel number as shown in Table 3 below on the OSD screen ( S214).

The operation of searching for and storing the channel and displaying the corresponding channel number on the OSD screen (or the digitron display window) may be performed by increasing the channel value by 1 and the last channel (here, 69 will be described as an example). Repeat the process until the last channel is reached, and when the function selection key is input again, the channel search operation can be completed when the function selection key is input again.

TABLE 3

In VSI having the channel search process as described above, if the user selects an arbitrary x channel after the automatic channel search function is performed (Y branch in S221), the corresponding channel number is stored as shown in the operation flowchart of FIG. 2B. Channel selection is performed by moving to the corresponding channel only (Y branch of S223) (S224).

However, if it is not memorized, the user can select a channel only when the user manually enters the manual mode in the screen display state of Table 2.

That is, when the manual channel fitting mode is set as shown in the flowchart of FIG. 2C (Y branch of S232), the OSD screen indicating the currently set channel number and the skip / memory status of the channel is displayed. Find the channel by increasing / decreasing (S235) or decreasing (S236) the channel using the / Gamma key, and skip the skip / memory setting of the channel. Will be.

Therefore, in the conventional automatic channel search as described above, if the channel to be memorized is not immediately known, and if the channel selection is not made, it is necessary to check the channel by pressing the channel or manually increasing / decreasing the channel in the manual mode or the EE state. There was a hassle.

Accordingly, the present invention has been made to solve the above problems, and the present invention distinguishes between a currently searching channel, a memorized channel, a non-memory channel, and a skipped channel according to a broadcast type when the automatic channel fitting mode is set. It is an object of the present invention to provide a method of displaying automatic channel search information of VSI, which enables the overall display of the automatic channel alignment progress and the search result thereof at a glance.

In order to achieve the above object, the present invention provides a method for designating an initial channel to be automatically searched while displaying all channel numbers on the OSD screen by setting the size of the channel to be automatically searched according to the broadcast type when the automatic channel fitting mode is set. Stage 1; In the second step, an arbitrary mark is given to each channel number on the display screen of the first step to repeatedly display the current search progress state and the memory / skip state of the corresponding channel as a result of the channel search. Provided is an automatic channel discovery information display method for a VSI.

1 is a block diagram schematically showing some components of a conventional V'ialal

2a is a flowchart illustrating an automatic channel discovery process in a conventional VSI

2b is a flowchart illustrating an operation of searching for an arbitrary channel in a conventional DB

2c is a flowchart illustrating a manual channel search process of a conventional VSI

3 is a flowchart illustrating an automatic channel discovery process of VSI according to an embodiment of the present invention.

** Explanation of symbols for the main parts of the drawings **

10: tuner unit 20: video / audio signal processing unit

30: OSD processing section 40: key input section

50: memory 60: microprocessor

Hereinafter, a method of displaying automatic channel discovery information of VSI according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a method for displaying automatic channel discovery information of VSI according to an embodiment of the present invention. The channel size is set according to a broadcast type to display all channel numbers on an OSD screen, and the initial channel is displayed. The first step (S311-S317) to designate, and the second step (S318) by giving an arbitrary mark to the channel number, the memorized channel number, and the skipped channel number currently being searched in the display state of the first step (S318). -S324).

That is, the first step is to determine whether the automatic channel matching mode is set in the OSD menu screen display state (S311, S312), and if the automatic channel matching mode is selected, by checking the broadcast type to determine whether it is a general TV (TV) broadcast or Step (S313) of identifying whether the cable TV (CATV) broadcast, and if the broadcast type is a general TV (TV) broadcast OSD screen that can display from 2 channel number to 69 channel number and setting the initial channel to 2 (S314, S315), and if the broadcast type is a cable TV (CATV) broadcast, the OSD screen that can display from 1 channel number to 125 channel number is displayed, and the initial channel is set to 1 (S316, S317).

In a second step, a display mark (for example, a square blinking mark) in a blinking state is assigned to a channel number currently searched for in the display state of the first step (S318), and whether a video signal is detected in the corresponding channel. (S319), and when the video signal is detected as a result of the channel search, storing the current channel number and assigning and displaying an inverted mark in which the blinking mark is fixed to the corresponding number on the OSD screen (S321, S322), and if the video search result is not detected, deleting and displaying the blinking mark on the corresponding number on the OSD screen without storing the corresponding channel number (S320), and repeating the operation to the last channel. If it is not the end channel by checking the current channel number, the channel number is increased by one and the process returns to the channel search step (S323, S324).

In the second step, it is preferable to assign a mark that continuously flashes while the search is in progress to the currently searched channel number, and further, by dividing the skipped channel number and the stored channel number into opposite marks. It is also preferable to display.

The operation of the present invention as described above is as follows.

According to the present invention, all channel numbers according to the broadcast type are displayed on an OSD screen when an automatic channel fitting operation is performed, and a display mark for displaying a search result can be provided to the channel numbers appearing on the OSD screen. When performing automatic channel fitting, the memory / skip status of all channels can be checked at a glance.

That is, when the automatic channel fitting mode is set in the OSD menu screen display state, the broadcasting type is checked to distinguish whether the TV is a general TV or a cable TV.

In this case, when the broadcast type is a general TV (TV) broadcast, the OSD screen in the blue back state that can represent the 2 channel number to the 69 channel number is displayed as shown in Table 4 below, and the initial channel is set to 2 to automatically search from the 2 channel. If the broadcast type is CATV broadcasting, display the OSD screen (not shown) that can show 1 channel number to 125 channel number, and set the initial channel to 1 to automatically search from 1 channel. Carry out the first step.

TABLE 4

Next, if a search for any channel is currently in progress on the OSD screen of Table 4, a blinking display mark (square blinking mark) is assigned to the corresponding number to indicate that the search is currently in progress.

When a video signal is detected as a result of the channel search, the current channel number is memorized, and then an inverted mark in which the blinking mark is fixed is displayed and displayed on the corresponding number on the OSD screen of Table 4, thereby providing an arbitrary channel. If the video signal is not detected as a result of the channel search, the controller skips the channel number without storing the channel number and displays only the channel number by deleting the blinking mark on the corresponding number on the OSD screen of Table 4.

Therefore, when the automatic channel search mode is performed in the TV mode, a random display mark is given to the currently in progress channel and blinks. If the corresponding channel is memorized after the execution, the fixed display mark is inverted from the display mark. If the skipped channel displays only the channel number, the user can know the memory result of any channel even during the automatic channel search so that the user can see the automatic channel search OSD screen and memorize the skipped channel. Manual Channel Customization-Switching to memory allows for immediate channel selection.

According to the present invention as described above, the channel to be memorized and the channel number to be skipped while performing the automatic channel search mode and the current channel search progress status at the same time, so that the channel search information can be checked at a glance to select a channel There is usefulness to facilitate.

Claims (5)

Setting a size of a channel to be automatically searched according to a broadcast type when the automatic channel fitting mode is set, and designating an initial channel to be automatically searched while displaying all channel numbers on the OSD screen; In the second step, an arbitrary mark is given to each channel number on the display screen of the first step to repeatedly display the current search progress state and the memory / skip state of the corresponding channel as a result of the channel search. A method for displaying automatic channel discovery information of VSI. The method of claim 1, wherein the first step comprises displaying from 2 channel numbers to 69 channel numbers when the broadcast type is a general TV broadcast. The method of claim 1, wherein the first step comprises displaying from 1 channel number to 125 channel numbers when the broadcast type is a cable TV broadcast. 2. The method of claim 1, wherein the second step assigns a blinking mark to the channel number currently being searched while the search is in progress. [2] The method of claim 1, wherein in the second step, the skipped channel number and the memorized channel number are again divided and displayed as marks opposite to each other.