KR950009677B1 - Mode selection method of teletext tv - Google Patents

Abstract

The method comprises the steps of checking whether a pre-capture key is inputted; checking an input of a numeric key to show the page of a specific item in case of inputting the pre-capture; memorizing a number of the page selected by the numeric key in case of inputting the numeric key and an enter key; decoding a specific item of a teletext corresponding to the memorized page number and memorizing it in a memory; and displaying the specific item of the teletext in case of inputting the pre-capture key.

Description

Mode selection method of text multicast

1 is a block diagram of the present invention.

2 is a flowchart of the present invention.

* Explanation of symbols for main parts of the drawings

1: Micom 2: MPU

3,4: Rom 5: Signal processing unit

6: DRAM 7: Buffer

9: text multicast extractor

The present invention relates to a method of selecting a multi-text broadcasting mode in which a selected mode can be displayed immediately without waiting time when a specific item in a multi-text broadcasting program is selected.

In a conventional text multiplex program, a specific page number for each item is designated.

For example, since the page number is set to 100, the text number of 100 is captured by the text signal decoder when 100 page numbers are input to the text broadcasting receiver using a remote controller. Will be displayed on the screen.

At this time, in order to display the information on the screen corresponding to the page number 100, the user usually inputs the page number 100 and waits a considerable time (10-20 seconds).

In other words, in order to select and display a specific page in the multi-text broadcasting program, a selected page number is inputted. However, the desired information is not displayed on the screen until a considerable time passes after the page number is input.

In view of the above, the present invention transmits the page number corresponding to the item that the user mainly wants to see to the text multicast processing unit so that the text multicast processing unit stores the contents of the page in the DRAM in advance, and then the user frees it. By pressing the capture execution key, the information stored in the D-RAM is displayed on the screen so that it can be displayed immediately without any inconvenience in waiting for a considerable time when selecting a specific mode of the multi-text broadcasting.

That is, the present invention selects a program that a user mainly wants to watch when receiving a text broadcast and stores it in a memory in advance, and then presses the precapture execution key so that the text broadcast of a selected item is displayed immediately. Pressing the pre-capture execution key immediately displays the character multicast of the specific item stored in the DRAM.

According to the present invention, a method for selecting a text multiple broadcast mode comprises: checking whether a pre-capture key for selecting a specific item of a text multi-cast is input; Checking, pressing the enter key when the numeric key is input to memorize the selected page number, decoding a specific item of the character multicast corresponding to the memorized page number, and storing it in the memory device; If the pre-capture key is input after the execution, the method may be performed by displaying a specific item of the character multicast broadcasted in the memory device.

Hereinafter, the present invention will be described in detail with reference to the configuration of FIG. 1 as a flowchart of FIG. 2.

1 shows a signal connection relationship between a microcomputer 1 and a text multiplex signal processor for processing the software of the present invention, and the text multicast (TTX) related command output from the microcomputer 1 is a digital text multicast data processor. 10: When the data is input to the digital teletext data and stored in the buffer 7, the MPU 2 reads the stored data and executes a precapture execution key command.

In other words, the microcomputer 1 of the present invention executes the software of FIG. 2, and the input is each key command, and the output is divided into a TV command and a text multicast command to control each function, and to control the analog / digital bus. Through this, the MPU 2 processes all the functions of the character multiplexer, and the main software of the character multiplexer is stored in the ROM 3 and 4.

That is, the main software of the character multi-processing unit stored in the ROMs 3 and 4 is executed by the MPU 2 and the software execution of the present invention is performed by the microcomputer 1. The command is applied to the digital text information broadcasting data processing unit 10 (DTP) to process the text multicast data of the text multicast extracting unit 9, which extracts only text multicast data included in the composite video signal.

The signal processing unit 5 stores R, G, and B addressed and decoded character multicast data for storing the character multicast data processed by the digital character information broadcast data processing unit 10 in the DRAM 6. The text is displayed on the screen as a signal, and the character multicast data processed by the digital character information broadcast data processing unit 10 is temporarily stored in the buffer 7.

That is, the signal processing unit 5 stores the character information broadcasting data of the digital character information broadcasting data processing unit 10 in the buffer 7 during general character information broadcasting, reads it out, and displays the R, G, and B signals on the screen. In the pre-capture mode, the data is temporarily stored in the DRAM 6, and then read. The pre-capture mode immediately displays the character information broadcast of the selected item.

At this time, the chip selector 8 selects a specific IC when the character information broadcast program is executed through the analog / digital bus.

This software according to the configuration of the present invention will be described in detail in the order of the flow chart of FIG.

First, check if the pre-capture key on the remote control is pressed. If the pre-capture key is pressed, set the pre-capture flag (hereinafter referred to as PF) to 1 and check whether the pre-capture flag is 1 (PF = 1). If the precapture key is not pressed (PF = 0), the program returns to the main program (this will be described later).

When the precapture key is pressed in this way, the precapture flag is set to 1 and then the precapture flag (PF) and the transmission flag (hereinafter referred to as TF) are set to 1 (TF = 1 and PF = 1).

At this time, if the pre-capture flag (PF) and the transmission flag (TF) are not set to 1, it is checked whether a key other than the numeric keys (0 to 9) on the remote control is pressed. After setting the capture flag (PF) to 0 (PF ← 0), ignore the precapture command and return to the main program.

However, if a key other than the numeric keys (0 to 9) of the remote controller is not pressed, it is checked whether numeric data is inputted. If no numeric data is inputted, it returns to the main program and the second time is interrupted by a time interrupt. From the start of the flowchart of the figure, the command for precapture is executed. At this time, since the precapture key is not input, the mode of "PF = 1" is executed. At this time, the precapture flag is set to 1, so that the number keys of the remote controller Key inputs other than 0 to 9) are checked.

If data by numeric keys is input without inputting data other than numeric keys, the input data is stored in a buffer.

As such, when the data is stored in the buffer, the enter key of the remote controller is pressed to indicate the completion of data input. When the enter key is pressed, the character multicast processing unit reads and stores the data stored in the buffer. By sending a command related to the pre-capture function, the text multiplex broadcast processing unit pre-memorizes the information of the selected page number in the DRAM 6 in advance.

At this time, the pre-capture command is transmitted to the text multicast processing unit, and the text multicast processing unit captures the information of the page to be precaptured by receiving the command and stores the decoded contents in the D (6) RAM.

After the pre-capture command transmission is completed, the transfer flag (TF) is set to 1 (TF ← 1) and the pre-capture flag (PF) is set to 0 (PF ← 0), and then the program is switched to the main program.

At this time, if the Enter key is not pressed, the program returns to the main program. If a time interrupt occurs again, the program command is executed again and it is checked whether the Enter key is pressed.

Then, when the enter key is pressed and the precapture command is transmitted to the text multicast processing unit, the transmission flag TF becomes 1 (TF ← 1) and the precapture flag PF becomes 0 (PF ← 0). When the capture key is pressed, the pre-capture flag (PF) is set back to 1 (PF ← 1), so the pre-capture flag (PF) and the transfer flag (TF) become 1 (TF = 1 and PF = 1). Send a command to perform the pre-capture function to the character multiplex signal processing unit to display the character information data already stored in the DRAM on the screen.

At this time, the precapture function execution command is transmitted to the text multicast processing unit, and the text multicast processing unit outputs the character information data stored in the DRAM as R, G, and B signals when the precapture function execution command is received. To display information.

As described above, the present invention selects a specific item that a user specifically wants to see in the text multi-broadcast receiver, stores the character information data of the item in the DRAM, and immediately reads it when the pre-capturing key is input to the R, G, and B signals. By displaying on the screen, when selecting a specific item of the multi-text broadcasting, it is possible to immediately watch the screen without waiting time.

Claims (1)

In the method of selecting a multi-text broadcasting mode, checking whether a pre-capture key for selecting a specific item of a multi-text broadcasting is input, and if a pre-capture key is input, checking a numeric key indicating a page number of a specific item. Storing a page number selected with the numeric keys; and encoding a specific item of the character multicasting corresponding to the stored page number and storing it in the memory device; And sequentially displaying the specific item of the multi-text broadcasting stored in the memory device when the pre-capture key is input after sequentially performing the above steps.

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