JPH0662382A - Teletext program reception and display system - Google Patents

Abstract

PURPOSE:To simultaneously watch a television broadcasting program and a teletext program at the screen of one television receiver, and to attain the display of the character picture of a teletext program by minimizing an influence on the video display especially of the television broadcasting program. CONSTITUTION:This system is equipped with a television broadcasting receiving part 3, teletext receiving part 4, television video control part 5 having a picture synthesizing function 6, television display device 7, main control part 8, and operation input part 9. At the time of simultaneously receiving both the television broadcasting and the teletext, the main control part 8 instructs the reception of the broadcasting program to each television broadcasting receiving part 3 and teletext receiving part 4, allow the television video control part 5 to input the signal of each received broadcasting program, and to synthesize the signals by using the picture synthesizing function 6, according to an operation instruction from an operation inputting part 9, so that the character picture of the teletext program can be displayed in a telop form by each line at a fixed area at the lower part of the video of the television broadcasting program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext program receiving / displaying system for allowing teletext programs to be viewed at the same time while watching a television program on a single television receiver.

[0002]

2. Description of the Related Art Some conventional television receivers can receive television broadcast programs and teletext programs, but only one of them can be displayed on the screen. Therefore, since the teletext program cannot be viewed while watching television, two television receivers should be prepared to receive both the telecast program and the teletext program separately in order to watch both of them, or The only way to watch the program was to switch programs on one TV set.

[0003]

DISCLOSURE OF THE INVENTION The present invention makes it possible to simultaneously watch a television broadcast program and a teletext program on the screen of one television receiver, and particularly for displaying an image of the television broadcast program. The purpose is to enable the display of text images of teletext programs with the minimum impact.

[0004]

According to the present invention, when a television broadcast program and a teletext program are displayed simultaneously, a text image of the teletext program having a size of one line or several lines is displayed at the bottom of the TV video screen. A display area is provided so that a character image of a character broadcast program is displayed in a so-called telop format in which it is inserted into a television image.

FIG. 1 is a block diagram showing the principle of the present invention. In the figure, 1 is a receiving antenna.

Reference numeral 2 is a receiving terminal. Reference numeral 3 is a television broadcast receiving unit. Reference numeral 4 is a teletext receiver.

Reference numeral 5 is a television image controller. Reference numeral 6 is an image combining function. Reference numeral 7 is a television display device.

Reference numeral 8 is a main controller. Reference numeral 9 is an operation input unit. 10 is a television screen.

Reference numeral 11 is a television image display area. 12
Is a character image display area. Reference numeral 13 is a character data buffer.

The operation function of each element is as follows. The receiving antenna 1 applies the received VHF or UHF broadcast wave signal to the television broadcast receiving unit 3 and the teletext receiving unit 4 of the receiving terminal 2.

From the operation input section 9, the user inputs the channel and time of the desired television broadcast program or teletext program, the program code, etc., and instructs the main control section 8.
The main control unit 8 sets the channel of the TV broadcast receiving unit 3 or the teletext receiving unit 4 so that the instructed program is received, and when the simultaneous reception of the TV broadcast and the teletext is instructed, Image composition function 6 of TV image control unit 5
Instruct the synthesis process. The character data of the character broadcast received by the character broadcast receiving unit 4 is temporarily stored in the character data buffer 1
It is stored in No. 3 and can be read at any timing.

The image synthesizing function 6 has a raster address for dividing the television screen 10 into a television image display area 11 and a character image display area 12, and selects an input in synchronism with the raster scanning of the television display device 7. And the respective signals of the character image are combined and displayed so as to be displayed in the television image display area 11 and the character image display area 12, respectively.

The character image data is stored in the character data buffer 1.
3 is read continuously while changing the display range at an appropriate timing. Since this display is performed in the telop format, in order to display the character data for one screen, the character data for one screen is sequentially shifted so as to flow from right to left when the character image display area 12 is one line display. While displaying
When displaying multiple lines, the character data for multiple lines are scrolled so that they flow from bottom to top. Therefore, the data read timing from the character data buffer 13 is also changed accordingly.

[0014]

According to the present invention, a television image and teletext information can be viewed simultaneously on one television screen, or only one of the screens can be displayed. In text broadcasting, the amount of text data that is required to be displayed per hour is small, so even if the display is in the telop format that uses only a small part of the TV image screen, it is possible to read it without much trouble. You can If necessary, the teletext screen can be frozen in the text image data buffer and scrolled to an arbitrary portion or stopped at an arbitrary portion.

[0015]

FIG. 2 is a block diagram of a system according to an embodiment of the present invention, and shows an example in which a home use terminal used for a transaction or voting at home is used as a receiving device.

In the figure, reference numeral 21 is a broadcasting station for television broadcasting and text broadcasting. 22 is a receiving antenna.

Reference numeral 23 is a home use terminal. 24
Is a TV broadcast / text broadcast receiving unit that can independently receive a TV broadcast and a text broadcast.

Reference numeral 25 is a television image controller having an image synthesizing function. 26 is a television receiver,
It may be a monitor with an interface.

27 is a CPU having a main control function,
It performs overall control of the home use terminal including reception control of television broadcasting and teletext, and subtitle display control of teletext according to the present invention.

A data processing unit 28 performs data processing when it is used as a home use terminal. 29
Is a data storage unit and is used for data storage during data processing.

Reference numeral 30 denotes a soft card section into which a soft card for inputting a program or data for functioning as a home use terminal for any purpose is inserted. Reference numeral 31 denotes a remote control input unit, which receives operation input information from a remote control (not shown).

Reference numeral 32 denotes a television screen on which the weather forecast selected as an example of the character broadcast is displayed as a telop together with the video of the television program. 2 using the flow of FIG.
The operation of this embodiment will be described. (1). Insert the soft card into the soft card section 30 of the home use terminal. The soft card stores a program that realizes a dialogue control function by a screen and a telop display control function. (2). Operate the remote control to turn on the terminal. (3). The CPU 27 operates according to the program of the soft card, first displays the initial screen, and causes the teletext program to be designated. (4). The television broadcast / teletext broadcast receiving unit 24 is made to receive the teletext program designated by the remote control operation. The teletext screen is displayed. (5). When an operation instruction to switch to the television mode is issued, the reception state of the designated television broadcast program is set in the television broadcast / text broadcast receiving unit 24. At this time, the television broadcast / teletext broadcast receiving unit 24 can receive both the designated television broadcast and the previously designated teletext program, but only the video of the television broadcast is displayed on the screen. (6). A request for displaying a telop of a teletext can be operated by a remote controller. (7), (8). When there is a telop display request, CP
U27 instructs the television image control unit 25 to synthesize the telop, synthesizes the telop image of the telecast program with the image of the television broadcast program received by the television broadcast / teletext broadcast receiving unit 24, and displays the television of the television receiver 26. The screen is displayed like the screen 32.

As a telop synthesizing method, a certain lower area of the television screen is dedicated for displaying a telop of a teletext and the television image is masked in this area so that only the telop of the teletext is displayed. And, the text display of the telop is limited to a certain area at the bottom of the TV screen, but the TV image is not excluded even in this area, and only the character pattern part of the telop of the text broadcast is displayed with priority over the TV image. There is.

As the telop, 1 is displayed on the TV screen.
A method of scanning and displaying one screen of a teletext while continuously flowing text images of lines from right to left, and a method of displaying a plurality of lines (2 to 3).
(Line) can be adopted such as a scroll display method using character lines.

The character data buffer 13 of FIG. 1 can be provided in the data storage unit 29, but may be provided in the television broadcast / character broadcast receiving unit 24 or the television image control unit 25.

[0026]

According to the present invention, since a teletext program is displayed in a telop format which does not interfere much with the video of a television broadcast program, it is possible to perform simultaneous parallel reception with low cost and a small amount of hardware. , Information can be used easily.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a configuration diagram of a system according to an embodiment of the present invention.

FIG. 3 is an operation flow diagram of the system according to the first embodiment of the present invention.

[Explanation of symbols]

 1 Receiving Antenna 2 Receiving Terminal 3 Television Broadcast Receiving Section 4 Text Broadcasting Receiving Section 5 Television Image Control Section 6 Image Compositing Function 7 Television Display 8 Main Control Section 9 Operation Input Section 10 Television Screen 11 Television Image Display Area 12 Character Image Display Area 13-character data buffer

Claims (1)

[Claims] 1. A television broadcast receiving section, a teletext receiving section, a television image control section having an image synthesizing function, a television display device, a main control section, and an operation input section. To receive both programs at the same time, the main control unit instructs the television broadcast receiving unit and the teletext receiving unit to receive the broadcast programs in accordance with the operation instruction from the operation input unit, and receives each broadcast program. The signal of is input to the TV image control unit and is combined using the image combining function so that the character image of the character broadcasting program is displayed in the telop format line by line in the lower fixed area of the image of the TV broadcasting program. A teletext program reception display method characterized by: