JPH0918841A - Character broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify that broadcasting of an emergency program other than a reception program is started or its contents are updated by detecting the start and contents update of a specific character broadcasting program to display them on the screen. SOLUTION: The text signal inputted to an input terminal 1 is inputted to a character signal processing part 3 and is subjected to character signal processing and is stored in a display memory 4 and is inputted to a switching mixer 5 at need. If contents of the program number preliminarily registered are updated in the character signal processing part 3, update data is sent to a CPU 8, and a display message to report that contents are updated is generated by a character generator 9 and is inputted to the switching mixer 5. This mixer 5 selects or mixes video and characters. When a program is started or contents are updated at this time, the display message generated by the character generator 9 is selected. This selected or mixed signal is processed in a display processing part 6 and is displayed on a cathode-ray tube 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiver for displaying the start and content update of a specific program on a screen.

[0002]

2. Description of the Related Art In recent years, various types of teletext have been broadcast from various broadcasting stations, and more than 100 programs have been broadcast in urban areas. Most of the character programs are non-collective type,
In a repetitive manner, one program is composed of several pages to several tens of pages and is sent in order at intervals of 10 to 20 seconds. News and other programs are gradually replaced with the latest information. The conventional receiving method of the teletext receiver is to wait until the selected program is sent or to store the program in the memory and call the program to be watched from the stored programs. Also, some have the function of displaying on the screen if the page is updated from the previous one when the program is selected.

[0003]

However, with the above-mentioned configuration, since it is not possible to recognize the start of another program or the update of content while receiving one program, it is difficult to broadcast in an emergency.
There is a problem that it is difficult to receive timely information.

In view of the above problems, the present invention provides a teletext receiver which detects the start and the content update of a specific program other than an image-received program and displays it on the screen.

[0005]

In order to solve the above problems, a teletext receiver of the present invention has means for registering a teletext program number, means for recognizing that the registered program has been broadcast, and the registered means. It is provided with means for recognizing that the program content has been updated, and has a function of displaying on the screen the start of broadcasting and the update of the content of the registered program.

[0006]

With the above-described structure, new information can be quickly obtained by displaying it on the screen when the registered program is started or the broadcast content is updated even while the program is being received.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A teletext receiver according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a teletext receiver according to an embodiment of the present invention.

In FIG. 1, 1 is an input terminal for inputting a character multiplex signal, 2 is a video processing unit for processing a video signal, 3 is a character signal processing unit, 4 is a display memory for storing character data, and 5 is a display memory. A switching mixer for switching the image to be displayed, 6 is a display processing unit for displaying the signal output from the switching mixer 5 on the cathode ray tube 7, and 8 is a character generator 9 and a switching mixer when receiving the program start or update data. CP for controlling vessel 5
U.

The operation of the teletext receiver according to the embodiment of the present invention constructed as above will be described. First, the character multiplex signal input from the input terminal 1 is processed by the video processing unit 2 as a video signal and input to the switching mixer 5. On the other hand, the character multiplex signal is also input to the character signal processing unit, subjected to character signal processing, stored in the display memory, and input to the switching mixer as required. In the character signal processing unit, when the content of the program number registered in advance is updated,
The updated data is sent to the CPU 8, a display sentence is created by the character generator 9 to inform that it has been updated, and is input to the switching mixer 5. The switching mixer 5 selects or mixes images and characters. At this time, if the program starts or the contents are updated, the display sentence created by the character generator 9 is selected. The selected or mixed signal is processed by the display processing unit 6 and displayed on the cathode ray tube 7.

[0010]

As described above, according to the present invention, means for registering a teletext program number, means for recognizing that a registered program has been broadcast, and recognition that the registered program content has been updated By providing a means and a function of displaying on the screen when the registered program is started to be broadcast and its contents are updated, the latest text information is sent even when watching other text programs. You can immediately recognize that.

[Brief description of the drawings]

FIG. 1 is a block diagram of a teletext receiver according to an embodiment of the present invention.

[Explanation of symbols]

 1 character multiplex signal input terminal 2 video processing unit 3 character signal processing unit 4 display memory 5 switching mixer 6 display processing unit 7 cathode ray tube 8 CPU 9 character generator

Claims (1)

[Claims] 1. A broadcast of the registered program, comprising means for registering a teletext program number, means for recognizing that the registered program has been broadcast, and means for recognizing that the content of the registered program has been updated. Teletext receiver equipped with a function to display the start and update of contents on the screen.