JPH10313447A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a degree of freedom of displaying teletext data by displaying data in an easy-to-see way without intermission of a sentence in the case of displaying the teletext data by a teletext data multiplex broadcast. SOLUTION: Extended data service(XDS) obtained from a caption decoder 1 are given to an on-screen display control section 6 of a microcomputer 5. A display circuit 7 generates a display signal in response to XDS display data from the on-screen display control section 6. A signal synthesis section 8 synthesizes a video signal and the display signal and gives the result to a display device 9. In the case that the XDS data exceeds the number of displayed characters of one line of the display circuit 7, line feed data are inserted and then the data are displayed through line feed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver provided with a decoder for receiving multiplex teletext broadcasting.

[0002]

2. Description of the Related Art In recent years, in the United States, closed caption broadcasting in which subtitle data for a hearing-impaired person is superimposed during a specific horizontal scanning period in a vertical blanking period of television broadcasting has become mandatory. Recently, an extended data service (Extended Data Service), which is abbreviated as EDS or XDS (hereinafter referred to as XDS).
Service) has started. In the XDS broadcast, various contents such as date and time, title of the program, outline of the program, length of the program, and the like are defined, and a wide range of information services have been provided by character data multiplex broadcasting.

FIG. 7 is a block diagram showing a general configuration of a television receiver having a decoder (so-called caption decoder) for receiving closed caption broadcasting and XDS broadcasting. In FIG. 7, a video signal of a television is input to a caption decoder 1 and a signal synthesizing unit 8. The caption decoder 1 includes a data slicer 2, a decoding unit 3, and a display circuit 4. The data slicer 2 extracts character data from a predetermined vertical blanking period of the video signal. The decoding unit 3 decodes (decodes) the extracted character data to obtain caption data and XDS data. The display circuit 4 generates a display signal according to the input caption data or XDS data, and supplies the signal to the signal synthesizing unit 8.

On the other hand, a microcomputer (hereinafter abbreviated as a microcomputer) 5 includes an on-screen display control unit 6 and a display circuit 7. Various instruction signals from a key input unit such as a remote control transmitter (not shown) are input to the on-screen display control unit 6. A representative example of this instruction signal is an instruction signal for menu display. The on-screen display control unit 6 includes a display 9
Data (on-screen data) for displaying a menu or the like on-screen is input to the display circuit 7. The display circuit 7 generates a display signal according to the input on-screen data and supplies the signal to the signal synthesizing unit 8.

The signal synthesizing section 8 synthesizes a display signal from the display circuit 4 and a display signal from the display circuit 7 with the video signal, and inputs the synthesized signal to the display 9. As a result, the display 9 displays character information based on caption data or XDS data and / or character information based on on-screen data such as a menu. FIG. 8 shows an example in which character information based on caption data is displayed on the display 9. Actually, the character information based on the caption data is displayed as white characters on a black background.

By the way, when the character information based on the caption data is displayed on the display 9, the display mode and the display position for displaying white characters on a black background are specified as described above. Therefore, the display circuit 4 incorporated in the caption decoder 1 has specifications conforming to the rules for displaying character information based on the caption data. That is, the display circuit 4 is a display circuit that generates a display signal such that the number of display characters on one line is 32 characters or more, or a white background is displayed on a black background. On the other hand, the display circuit 7 for displaying on-screen data such as a menu has different specifications depending on each device, and the number of characters to be displayed and the background color can be freely set. In general, the display circuit 7 has a smaller number of display characters both vertically and horizontally than the number of display characters by the display circuit 4, and enlarges the characters to make them easier to see. As an example, the number of characters displayed on one line of the display circuit 7 is 25 characters.

In the conventional television receiver shown in FIG. 7, character information based on XDS data is displayed on a display 9 by a display circuit 4 built in the caption decoder 1.
When the character information based on the on-screen data such as the menu is displayed on the display 9 by the display circuit 7 built in the microcomputer 5, the character information based on the XDS data and the character information based on the on-screen data are separately displayed. Since the display is performed by the circuits 4 and 7, the control of the display circuits 4 and 7 becomes complicated. In addition, since the size of the character information based on the XDS data and the size of the character information based on the on-screen data are not uniform, the appearance is poor.

When character information based on XDS data is displayed on the display 9, unlike caption data having various rules, there is no special rule. Therefore, it is allowed to display on the display 9 in any display form. Therefore, when displaying the XDS data on the display 9, the XDS data output from the decoding unit 3 is input to the on-screen display control unit 6 of the microcomputer 5, and the XDS data is output using the display circuit 7 built in the microcomputer 5. Character information based on the data may be displayed on the display 9.

With this configuration, since the character information based on the XDS data and the on-screen data is displayed by one display circuit 7, the control of the display circuit 7 is easy.
Further, since the size of the character information based on the XDS data and the size of the character information based on the on-screen data are uniform, the appearance is improved.

[0010]

However, the XDS
The data is input to the on-screen display control unit 6 of the microcomputer 5, and XD is performed by using the display circuit 7 built in the microcomputer 5.
When the character information based on the S data is configured to be displayed on the display 9, the following problem occurs. The XDS data has a display character number of 32 characters per line. on the other hand,
As described above, the on-screen display control unit 6 and the display circuit 7 of the microcomputer 5 often have less than 32 display characters in one line. For example, using the microcomputer 5 in which the number of display characters in one line is 25, X
To display DS data, as shown in FIG.
There is a problem that a portion exceeding 25 characters is not displayed, and the sentence is interrupted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems. In displaying character data by character data multiplex broadcasting, text can be displayed easily without being interrupted. It is an object of the present invention to provide a television receiver capable of improving the degree of freedom of the television receiver.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems in the prior art, the present invention provides a decoder for receiving character data multiplex broadcasting and a display for displaying character data received by the decoder on a display unit. A television receiver comprising: a display circuit for displaying the character data by dividing the character data by line feed at a position determined by the television receiver and displaying the divided character data. It is intended to provide a John receiver.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a television receiver according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a television receiver according to an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the television receiver according to the first embodiment of the present invention. FIG. 4 is a diagram showing a screen display example according to one embodiment, FIG. 4 is a flowchart showing a second embodiment of the operation by the television receiver of the present invention, and FIG. 5 is a diagram showing a screen display example according to the second embodiment shown in FIG. FIG. 6 is a diagram showing another screen display example according to the present invention. In FIG. 1, the same parts as those in FIG. 7 are denoted by the same reference numerals.

First, the configuration of the television receiver of the present invention will be described. In FIG. 1, a video signal of a television is input to a caption decoder 1 and a signal synthesizing unit 8. The caption decoder 1 includes a data slicer 2, a decoding unit 3, and a display circuit 4. The data slicer 2 extracts character data from a predetermined vertical blanking period of the video signal. The decoding unit 3 decodes (decodes) the extracted character data to obtain caption data and XDS data. The caption data is input to the display circuit 4, and the XDS data is input to a microcomputer (hereinafter abbreviated as a microcomputer) 5.
The input to the microcomputer 5 is the XDS data,
Only data to be displayed on the display 9 is sufficient, and data such as an aspect ratio and a caption mode which are not directly related to the display need not be input to the microcomputer 5. Display circuit 4
Generates a display signal according to the input caption data, and supplies it to the signal synthesizing unit 8.

On the other hand, the microcomputer 5 includes an on-screen display control section 6 and a display circuit 7. Various instruction signals from a key input unit such as a remote control transmitter (not shown) are input to the on-screen display control unit 6. A representative example of this instruction signal is an instruction signal for menu display. The XDS data output from the decoding unit 3 is also input to the on-screen display control unit 6. The on-screen display control unit 6 inputs data (on-screen data) to the display circuit 7 for displaying on-screen menus and the like on the display 9. The on-screen display controller 6 also displays data (XDS display data) for displaying the input XDS data on the display circuit 7.
To enter. The display circuit 7 generates a display signal according to the input on-screen data or XDS display data,
The signal is supplied to the signal synthesis unit 8.

The signal synthesizing unit 8 synthesizes a display signal from the display circuit 4 and a display signal from the display circuit 7 with the video signal, and inputs the synthesized signal to the display 9. As a result, the display 9 displays character information based on caption data or XDS data and / or character information based on on-screen data such as a menu.

Here, the on-screen display control unit 6 and the display circuit 7 when XDS data is input to the microcomputer 5
Example 1 of the display operation according to the first embodiment will be described. In FIG. 2, XDS data is received in step S1, and it is determined in step S2 whether the received XDS data can be displayed in one line. For example, when the number of display characters in one line of the display circuit 7 is 25, it is determined whether the XDS data is within 25 characters or more. If the XDS data can be displayed in one line, the process proceeds to step S5, and character information based on the XDS data is displayed. If the XDS data cannot be displayed in one line, the process proceeds to step S3, and the number of lines to be divided is determined.
That is, the XDS data is displayed in two lines or three lines. Then, line feed data is inserted for each number of characters that can be displayed in one line in step S4, and displayed in step S5.

For example, when the number of characters displayed on one line by the microcomputer 5 is 25 characters and the number of characters of the XDS data exceeds that, and the XDS data is displayed over two lines by the processing shown in FIG. As shown, XDS
Character information based on the data is displayed on the display 9.
In FIG. 3, the character information based on the XDS data is displayed alone, but may be displayed in combination with the character information based on the on-screen data such as a menu. In this case, since both the character information based on the on-screen data and the character information based on the XDS data are displayed by the display circuit 7 of the microcomputer 5, it is necessary to display the character information so that they do not overlap each other, and to display each at an optimum position. Is easy. Further, it is possible to display the character information based on the XDS data in an arbitrary color of the display circuit 7.

In the first embodiment shown in FIG. 2, a problem that a part of a sentence is not displayed broken by a line feed is solved, but a line feed is broken in the middle of a word as shown in FIG. That happens. The second embodiment shown in FIG. 4 improves this point.

In FIG. 4, XDS data is received in step S11, and it is determined in step S12 whether the received XDS data can be displayed in one line. If the XDS data can be displayed in one line, the process proceeds to step S23, and character information based on the XDS data is displayed. If the XDS data cannot be displayed in one line, the process proceeds to step S13, and the number of lines to be divided is determined. That is, the XDS data is displayed in two lines or three lines. Then, step S1
At 4, L is set to the number of divided rows, and C is set to 0. The number L of divided rows is set to “number of rows−1”, such as 1 for 2 divisions and 2 for 3 divisions. Next, N is set to 0 in step S15. Note that L, C, and N in steps S14 and S15 are codes used for convenience in a series of processes.

In step S16, it is determined whether there is a space N characters before the number of characters that can be displayed on one line. First, since N = 0, it is determined whether or not there is a space at the end of the number of characters that can be displayed in one line. If there is a space, the process proceeds to step S17, the line feed data is inserted into that portion, and the process proceeds to step S21. If there is no space, 1 is added to N in step S18, and it is determined in step S19 whether or not it is the head. If not, the process returns to step S16 to determine whether there is a space N (in this case, 1) characters before the number of characters that can be displayed on one line. These steps S16, S18, S1
By 9 and S17, the presence or absence of a space is searched in order from the end of the number of characters that can be displayed in one line toward the beginning, and if there is a space, line feed data can be inserted into that portion.

If it is determined in step S19 that it is the beginning (ie, if there is no space), step S2
It moves to 0, inserts a hyphen one character before the number of characters that can be displayed on one line, and inserts line feed data after the hyphen. Next, 1 is added to C in step S21, and it is determined in step S22 whether C = L. If C = L, it means that the processing for all the rows has been completed, and the character information based on the XDS data is displayed in step S23. If not C = L, the process returns to step S15, and the above processing is repeated.

If the XDS data cannot be displayed in one line by the above processing, the line is broken in a space, and
If there is no space, a new line is added with a hyphen.
FIG. 5 is a display example in a case where XDS data cannot be displayed in one line and a line feed is performed in a space portion.

In the above example, a case where only character information based on XDS data is displayed has been described. However, the present invention is also applicable to a case where character information based on various on-screen data and character information based on XDS data are simultaneously displayed. It is valid. FIG. 6 shows a channel number 11, a broadcast station name 12, and a time 13 by on-screen data, and a program title 1 which is character information by XDS data on the right side thereof.
4, when the commentary information 15 is displayed. Explanation information 15
Is displayed using the processing shown in FIG.

In this case, the character information based on the on-screen data and the character information based on the XDS data are displayed side by side.
Determining whether or not display can be performed in a row means that
This is not the number of display characters in a line, but the number of display characters in one line allocated to display the commentary information 15. Of course, XD
The display form as shown in FIG. 6 can also be adopted when only various character information based on S data are displayed side by side.

As described above, according to the present invention, a line feed is not performed by using a line feed signal added to character data in advance, but is displayed by dividing the line at an arbitrary position determined by the television receiver. When displaying the character data by the character data multiplex broadcasting, the text can be displayed easily without being interrupted, and the degree of freedom in displaying the character data can be improved. .

In this embodiment, the case where character information based on XDS data is displayed as an example of character data based on character data multiplex broadcasting has been described. However, the present invention can be applied to all other character data. it can. Also,
Character data is not limited to English (European). Further, as shown in FIG. 1, not only a television receiver having two display circuits 4 and 7 but also a television receiver having only one of the display circuits may be used.
As described above, the present invention can be variously modified without departing from the gist of the present invention.

[0028]

As described in detail above, the television receiver of the present invention is provided with the division display means for dividing and displaying character data by line feed at a position determined by the television receiver. Therefore, when displaying the character data, the sentence can be displayed easily without interruption, and the degree of freedom in displaying the character data can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a first embodiment of the operation according to the present invention.

FIG. 3 is a diagram showing a screen display example according to the first embodiment shown in FIG. 2;

FIG. 4 is a flowchart showing a second embodiment of the operation according to the present invention.

FIG. 5 is a diagram showing a screen display example according to the second embodiment shown in FIG. 4;

FIG. 6 is a diagram showing another screen display example according to the present invention.

FIG. 7 is a block diagram showing a configuration of a conventional example.

FIG. 8 is a diagram showing a screen display example according to a conventional example.

FIG. 9 is a diagram showing a screen display example for explaining a problem of the conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 caption decoder 2 data slicer 3 decoding section 4, 7 display circuit 5 signal synthesis section 6 on-screen display control section 8 signal synthesis section 9 display

Claims (3)

[Claims] 1. A television receiver comprising: a decoder for receiving text data multiplex broadcasting; and a display circuit for displaying the text data received by the decoder on a display unit. 1. A television receiver, comprising: a division display means for dividing and displaying a line at a position determined by the television receiver. 2. The divided display means includes: space detecting means for detecting a space included in the character data; and line feed data inserting means for inserting line feed data into the space detected by the space detecting means. The television receiver according to claim 1, wherein: 3. The divided display means includes: space detection means for detecting a space included in the character data; and a hyphen in the middle of the character data when no space is detected by the space detection means. The television receiver according to claim 1, further comprising: a hyphen adding unit that adds a line; and a line feed data inserting unit that inserts line feed data after the hyphen.