JPH01303985A - Character graph information display device - Google Patents

Abstract

PURPOSE:To rewrite picture display every time a new page is received by using a display area selection means so as to select a single display area from plural display areas according to the order given by a sequence provision means when the same program number is designated to the plural display areas. CONSTITUTION:A display position selection means 12 of a microprocessor circuit 2 stores a display area displaying precedingly a pattern into a RAM 4 and the display area displaying the pattern is selected according to the order of display given by a sequence provision means 11. Then the character graph information program is decoded and the character graph picture is stored in the range of an address of a display memory 7 corresponding to the display area selected by the display position selection means 12. The same program is designated in plural display areas and when the program consist of plural pages, every time one page of the program is displayed on the pattern, both the means 11, 12 move the display area displaying the pattern one after another. Thus, the pattern display is rewritten sequentially.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a text/graphic information display device that decodes received text/graphic information and displays the decoded text/graphic information on a display unit.

BACKGROUND OF THE INVENTION In recent years, various types of television multiplex broadcasting have been considered to make effective use of broadcast waves. Television text multiplex broadcasting, which can display text and graphics information on the screen of a television receiver, has been put into practical use. On the other hand, there is also videotex, which uses telephone lines to transmit text and graphic information and displays the same information on the screen of a television receiver.
It has been put into practical use.

Hereinafter, with reference to the drawings, a text and graphic information display device that can receive the above-mentioned text and graphic information and display it on the screen of a television receiver will be described.

FIG. 3 shows the configuration of a conventional character and graphic information display device. In FIG. 3, 1 is a text/graphic information decoding unit that decodes text/graphic information into a text/graphic image, 2 is a microprocessor circuit that controls the text/graphic information decoding unit, and 3 is a text/graphic information decoding unit that decodes text/graphic information from a video signal. A receiving circuit that extracts digital data; 4 is a RAM that stores received character and graphic information and is used as a work area for the microprocessor circuit 2; 5 is a ROM that stores a program for controlling the microprocessor circuit 2; 7 is a display memory for storing the character and graphic images decoded by the microprocessor circuit 2; 6 is a display processing circuit for synthesizing the character and graphic images stored in the display memory 7 into RGB signals; 9 is a A character generator, 8, used when decoding character and graphic information into a character and graphic image, and an additional sound decoder, 10, that processes additional sound data included in the character and graphic information.
is a keypad that instructs the text/graphic information decoding section to select text/graphic information. 20 is a television signal receiving section, 21 is an antenna, 22 is a television signal receiving circuit, 23 is an audio demodulation amplification circuit, 24 is a brightness amplification color demodulation circuit, and 25 is a television video/audio signal and text/graphic information. a video/audio switching circuit 2 that switches or mixes the RGB signal output from the decoding unit 1 and the additional sound signal;
6 is an audio amplification output circuit, 28 is a speaker, 27 is a video amplification output circuit, and 29 is a display section for displaying images.

The operation of the character and graphic information display device configured as described above will be explained below. The television signal received by the antenna 21 is demodulated by the television signal receiving circuit 2i of the television signal receiving section 20, and a video signal and an audio signal are extracted. The video signal is input to the receiving circuit 3 of the text/graphic information decoding section 1, and text/graphic information is extracted from the video signal. By operating the keypad 10, the user instructs the microprocessor circuit 2 to select a desired text/graphic information program from among many text/graphic information programs. The microprocessor circuit 2 selects the instructed text/graphics information program and stores it in the RAM.
According to the contents of the program stored in the ROM 5, decoding processing is performed using the character generator 9 as necessary to convert it into a character graphic image, and the resulting image is stored in the display memory 7. The character and graphic images stored in the display memory 7 are synthesized into RGB signals by the display processing circuit 6. Further, the additional sound data included in the character/figure signal is converted into an additional sound signal by the additional sound decoder 8.

On the other hand, the audio signal and video signal demodulated by the television receiving circuit 22 are input to an audio demodulation amplification circuit 23 and a luminance amplification color demodulation circuit 24, processed, and then input to a video/audio switching circuit 25. The video/audio switching circuit 25 receives the video signal (RGB signal) output from the text/graphic information decoding section 1.
By switching between the audio signal (additional sound signal) and the video and audio signals of the television, the former is selected when displaying text and graphic images, and the latter is selected when displaying a television image, and audio amplification output is achieved. The signals are input to a speaker 28 and a display section 29 through a circuit 26 and a video amplification output circuit 27, respectively. Through the above operations, the user can display the selected character/graphic information on the display section 29.

FIG. 4 shows the display area of the screen when character and graphic information is displayed on four screens on the display unit 29. Fourth
In the figure, a is a first screen display area, b is a second screen display area, C is a third screen display area, and d is a fourth screen display area.

FIG. 5 shows the address range of the display memory 7 corresponding to the display areas a to d. A is alko, day is b
, C corresponds to C, and O corresponds to d, respectively. By storing the text and graphics images of the text and graphics information program decoded by the microprocessor circuit 2 in the address range A-D of the display memory 7, the display unit 29 corresponding to the address range A-0 of the display memory 7 The display area of
d can display a screen of a text and graphic information program.

In this way, screens of a plurality of text and graphic information programs can be displayed simultaneously on the display section 29.

To specify the display area and the text/graphics information program to be displayed there,
This is performed by inputting keys corresponding to the display areas a to d and keys corresponding to the program number on the keypad 10.

Problems to be Solved by the Invention However, in the text and graphic information display device configured as described above, when displaying a text and graphic information program consisting of multiple pages in multiple display areas of the display section, the same content is displayed in the multiple display areas. When displaying screens of different pages of a program and receiving a new page, it was not possible to rewrite the screen display one after another.

In view of the above problems, the present invention, when displaying a text/graphics information program consisting of multiple pages in multiple display areas of the display unit, displays screens of different pages of the same program in the multiple display areas, and displays new pages. The present invention provides a text/graphic information display device that can sequentially rewrite the screen display upon receiving the information.

Means for Solving the Problems In order to achieve this object, the text and graphic information display device of the present invention has a display area of the screen and a screen of a plurality of text and graphic information programs when displaying the screens of a plurality of text and graphic information programs on the display unit. program designating means for designating a program number; order assigning means for assigning an order in which screens are displayed when the same program number is designated for multiple display areas; display area selection means for selecting a single display area from a plurality of display areas in accordance with the order given by the order giving means when the order is given; and decoding display means for displaying in the displayed display area.

Effects of the present invention With the above-described configuration, when the same program number is specified in a plurality of display areas, the display area selection means selects a single display area from the plurality of display areas according to the order given by the order assigning means. , it is possible to display screens of different pages of the same program in a plurality of display areas and rewrite the screen display each time a new page is received.

EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a text/graphic information display device in an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a text/figure information decoding unit that decodes text/figure information into a text/figure image; 2, order assigning means 11;
and display position selection means 12.

3 is a receiving circuit, 4 is a RAM, 5 is a ROM, 6 is a display processing circuit, 7 is a display memory, 8 is an additional sound decoder, 9 is a character generator, 10 is a keypad, 20 is a television signal receiving section, 21 is a An antenna, 22 a television signal receiving circuit, 23 an audio demodulation amplifier circuit, 24 a brightness amplification color demodulation circuit, 25 a video and audio switching circuit, 26 an audio amplification output circuit, 27 a video amplification output circuit, 28 a speaker, Reference numeral 29 denotes a display section, which has the same configuration as that shown in FIG. 3.

The operation of the character and graphic information display device configured as described above will be described below.

The text and graphic information display device of this embodiment can basically operate in the same way as the conventional text and graphic information display device shown in FIG. 3, when the same program number is not specified in multiple display areas. . The display area when character and graphic information is displayed on four screens on the display unit 29 is the same as the conventional example shown in FIG. 4, and the address range of the display memory 7 corresponding to the display area a to d is also shown in FIG. This is the same as the conventional example.

FIG. 2 shows the order given by the ordering means 11 included in the microprocessor circuit 2 when the same program number is specified in a plurality of display areas.

a % d in FIG. 2 is the same as ta - d in FIG. 4, where a is the first display area, b is the second display area,
C represents the third display area, and d represents the fourth display area. A is the display order when the same program number is specified in 4 display areas, B is the display order when the same program number is specified in 3 display areas, and 2 is the display order when the same program is specified in 2 display areas. This is the display order when a number is specified.

Depending on the combination of display area and program number, there is one display order for A, four display orders for B, and six display orders for A.

The display position selection means 12 of the microprocessor circuit 2 stores in the RAM 4 the display area in which the screen was displayed last time, and selects the display area in which the screen will be displayed next according to the display order given by the ordering means 11.

The microprocessor circuit 2 decodes the text and graphics information program and stores the text and graphics images in the address range of the display memory 7 corresponding to the display area selected by the display position selection means 12.

When the same program is specified in multiple display areas and the program is composed of multiple pages, each time one page of the program is displayed on the screen, the order assigning means 11 and the display position selecting means 12 As a result, the display area for displaying the next screen moves one after another, so the screen display is sequentially rewritten every time a new page is received.

As described above, according to this embodiment, by providing the order assigning means 11 and the display position selecting means 12, when displaying a text/graphics information program consisting of a plurality of pages in a plurality of display areas of the display unit 29, a plurality of Screens of different pages of the same program can be displayed in the display area of the screen, and when new pages are received, the screen display can be sequentially rewritten.

Effects of the Invention As described above, according to the present invention, by providing the order assigning means and the display position selecting means, screens of character and graphic information of different pages of the same program number can be displayed in a plurality of display areas of the display unit. , when a new page is received, the screen display can be rewritten one after another.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a text and graphic information display device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the display order given by the order assigning means, and FIG. Block diagram showing a configuration example of a display device, No. 4
The figure is a front view showing the display area of the screen when character and graphic information is displayed on four screens on the display unit, and FIG. 5 is a diagram showing the address range of the display memory corresponding to the display area. 2...Microprocessor circuit, 4...
RAM. 5...ROM, 6...Display processing circuit, 7
...Display memory, 10...Keypad,
11...Order assigning means, 12...Display position selection means, 29...Display unit. Name of agent: Patent attorney Toshio Nakao (1st person, 2nd person)
Figure) Cenibuni-Shinibe D (a) ○-22UO busy king 2 5 0 company summary Figure 4 Figure 5

Claims (1)

[Claims] When displaying screens of a plurality of text and graphic information programs on a display unit, a program specifying means for specifying a display area of the screen and a program number of the text and graphic information programs, and a program specifying means for specifying a display area of the screen and a program number of the text and graphic information programs, and a program specifying means for specifying the same program number for the plurality of display areas. If the same program number is specified for multiple display areas, a single program number is assigned from the multiple display areas according to the order given by the order allocation means. A character characterized by comprising display area selection means for selecting a display area, and decoding and display means for decoding character and graphic information consisting of a plurality of programs and displaying a screen of a specified program in a specified display area. Graphical information display device.