JPH01166683A - Teletext receiver - Google Patents

Abstract

PURPOSE:To eliminate the need for troublesome switching operation by providing a storage means storing whether or not a telop program in a teletext signal is to be selected so as to select the telop program automatically when the telop program is broadcast. CONSTITUTION:A storage means 16 storing whether a telop program in a teletext signal is to be selected or not is provided and the initial state of a receiver is set at the telop program in the succeeding teletext signal depending on the storage state of the storage means 16. A status signal representing whether the teletext is a broadcast for the telop program is supplied from a character signal processor 14 to a microcomputer 13. The microcomputer 13 supplies a control command data to a tuner 4 and the character signal processor 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a teletext receiver capable of receiving subtitle broadcasts.

[Summary of the invention]

The present invention relates to a teletext receiver capable of receiving subtitle broadcasts, and in a teletext receiver capable of receiving television signals and teletext signals, selects a subtitle program in the teletext signal. , a storage means for storing whether to deselect or not, and the initial state of the receiver is set at the time of the next subtitle program in the teletext signal, depending on the storage state of the storage means. If there is a subtitled program, the receiver automatically displays the subtitled program.

[Conventional technology]

BACKGROUND ART Recently, teletext broadcasting has been carried out in which teletext programs are transmitted by utilizing the time gaps in TVIL broadcasting radio waves. This teletext program is for each Danji ace.

In addition to daily life information such as weather forecasts, traffic information, stock market conditions, etc., a variety of other information such as subtitled super programs and quiz programs are broadcast in a hybrid format. Such teletext signals, i.e., pixel pattern data such as characters, figures, etc., are converted into digital signals, and a control signal indicating the magazine number 1 representing the program group and the program number and page number is added, and the data is stored in a large-capacity storage means. Furthermore, this stored data contains a synchronization code 9 necessary for transmission.
A multiplexer adds M4 correction codes, etc., and superimposes these teletext signals on the vertical blanking period of the television signal (in the first odd field, the 14th horizontal period (H
), the 15th H9, the 16th H1 and the 21st H in the even field of the next field, the 2778th.

278H, 279H, and 284H).

Such teletext signals are transmitted as radio waves from a transmitting device.In a character broadcast receiver, a video signal detected by a TV receiving circuit is supplied to a character signal decoder, and a character signal superimposed during a vertical blanking period is output. Separate from the video signal, select a desired teletext program using, for example, a remote control operating means, decode the character signal, supply the decoded signal to a character signal generator, and output the character signal to a display means such as a cathode ray tube. It is arranged as shown above. Details of such a teletext receiver are disclosed in Japanese Patent Application Laid-Open No. 59-165, which was previously proposed by the applicant.
It is disclosed in Japanese Patent No. 582.

When relying on such teletext signals, the display mode displayed on the screen is predetermined by the transmitting device and transmitted, and is usually a full-scale fixed display mode that displays stationary characters and figures on the screen of the receiving device. , super fixed display mode that displays static text and graphics superimposed on the TV broadcast video, subtitle display mode that displays super fixed text and graphics that are directly related to the content of the program being simultaneously broadcast, and TV video. A single-line horizontal scroll display mode in which horizontal lines of characters and figures that move from right to left are superimposed on the screen.

Full-scale vertical scroll display mode in which a single character figure moves from the bottom of the screen to the top, and Level B, in which the main text display area is divided into four quadrants and the screen is displayed simultaneously in a fixed full-screen display in each quadrant.
There are six multi-screen display modes that can be displayed in this specification. Among these display modes, the super fixed display mode, subtitle display mode, and one-line scroll display mode will be included in the description as a subtitled program. .

[Problem that the invention seeks to solve]

With the Musketeer's teletext receiver, the subtitle program cannot be started unless the subtitle key or 999# key (the code number for receiving the subtitle program) is operated using the key provided on the receiver or the remote control operation means every time a subtitle program starts. Not only can you not watch it, but if you miss the ``texttext/subtitled program'' that appears in the corner of the TV screen for about a minute, you will not realize that it is a subtitled program. It is necessary to know in advance that the program is a subtitled program, and since hearing-impaired people always watch subtitled programs, it is extremely troublesome to operate the subtitle program keys every time.

The present invention was made in view of the musketeers, and its object is to provide a teletext receiver in which a subtitled program is automatically selected when the subtitled program is transmitted.

[Means for solving problems]

As an example of the teletext receiver of the present invention is shown in FIG. 1, the teletext receiver is capable of receiving a television signal and a teletext signal. It has storage means (16), (lea) for storing whether to select or deselect a program, and depending on the storage state of the storage means (16), (16a), the subtitle program in the next teletext signal is selected. The initial state of the image receiving device is sometimes set.

[Effect]

According to the teletext apparatus of the present invention, if a subtitle program is selected first, it is stored in the storage means (16), (16a), so that from then on, when a subtitle program is transmitted, the subtitle program is automatically selected in the storage means (16), (16a). (16) and (16a), the screen of the image receiving device is switched to the subtitled program, so there is no need to perform a cumbersome switching operation by pressing a subtitle key.

(Embodiment) An embodiment of the teletext receiver of the present invention will be described below with reference to FIGS. 1 to 3.

In Figure 1, the teletext receiver (1) has a teletext decoder built into the television receiver, and normal television signals are caught by an antenna (3) and selected by a chainer (4). The video intermediate frequency amplifier circuit (5) separates the video signal and audio signal, and the video signal is detected by the video detection circuit (6). Circuit (8
) is supplied to the video color signal processing circuit (9) to switch between the three primary colors red signal R1, green signal G, and blue signal B.
, G, B switching circuit (10) to a display means (11) such as a CRT, and displays the television screen on the display means (11).
1) Display on top. The audio signal is emitted from the speaker (15) through the audio detection circuit (7) and the video/audio switching circuit (8).

If a teletext signal is included in the television signal, the video and audio signals obtained by the video detection circuit (6) and audio detection circuit (7) are sent to a text signal processor (14) including a text signal decoder. 'Decodes character and graphic signals from video signals. Of course, the contents of these teletext programs are controlled by the operation keys (
For example, the subtitle mode is selected using the subtitle key (17b) in 17a). The selection command data received by the receiving section (12) is supplied to the microcomputer (13). The microcomputer (13) sends control command data to the chainer (4) and the character signal processor (14) through the control line (13).
a) Supply through (13b) Chena (4)
and a character signal processor (14) to a micro combiator (1) to operate a character signal processor (14).
3) is supplied with a status signal indicating whether or not the teletext is a subtitled program. The micro combinator (13) includes storage means (not shown) such as RAM and ROM for normal systems, and also includes non-volatile Bl! FROM, for example MNOS (Metal N1tride
A storage means (16) such as Oxide Semiconductor) is provided.

The character signal decoded by the character signal processor (14) is converted into analog primary color signals of R, G, and B.
, B switching circuit (10), and characters and graphics are displayed on the display means (11) by the video control signal (14v) from the character signal processor (14). In addition, when playing a melody according to the display of musical notation, additional sounds etc. are similarly decoded by the decoder in the character signal processor (14) and supplied to the switching circuit (8).
The speaker (15) is activated by the audio control signal (14s) from the speaker (14).
) is emitted. In addition, when superimposing a teletext screen on a telepidgin broadcast screen, the RGB signals from the character signal processor (14) and the video color signal processing circuit (9)
) are combined and displayed on the display means (11).

The operation of this example in the configuration of the musketeer will be explained with reference to the flowcharts of FIGS. 2 and 3.

The flowchart in FIG. 2 shows the operation for first storing or canceling the last subtitle state in the storage means (16) in the teletext receiver of this example. In the first step STt, the subtitle key (17b) in the micro combinator (13) is activated by, for example, the remote control operation means (17).
If the subtitle key (17b) is not pressed, the operation returns to the first step S'I'L. The subtitle key (17b) was pressed.”
YES”, the micro combiator (13) determines what status the teletext signal mode of the teletext receiver (11) is, that is, whether it is a subtitled program or not.
In step 5T2), if the program is not subtitled in the second step ST2, the program ends or the program goes to the second step STP2, which performs subtitle sensing as shown in FIG. 3, which will be described later. Since the status signal indicating that the subtitled program is present is supplied to the micro combiator (13) via the control line (13b), the micro combiator (13) stores the stored contents of the storage means (16) such as MNOS in the third step. A search is performed in ST3, and if the subtitle program is not selected in the storage means (16) and the subtitle program is not selected previously, the subtitle is set to the selected state as shown in the fourth step S'l'4.
The MNOS of the storage means (16) stores the last subtitle data that will be treated as a subtitle program from now on when a subtitle program comes.
As shown in step STs, the microcomputer (13) supplies the subtitle mode input data to the character signal processor (14) via the control line (13b) to reach the end, or the microcomputer (13) supplies the subtitle mode input data to the character signal processor (14) via the control line (13b) to reach the end. Alternatively, if the contents of the storage means are in the subtitle selection state at the third step ST3 (if the subtitle key (17b) is pressed twice, for example), the process may proceed to the sixth step STg. As shown in Figure 3, the last subtitle data in the storage means (16) is deleted and the subtitle mode is canceled in the next seventh step ST, and the process reaches the end or proceeds to the second step ST P2 in Figure 3. You can.

With the last subtitle stored in or released from the storage means (16) in this way, people with hearing impairments can watch the teletext program simply by turning on the power of the teletext receiver (1). When a subtitled program starts, you can automatically receive it in subtitle mode. A flow chart like this will be explained with reference to FIG. In Fig. 3, the first step S'1''Pt is the main routine, and after the main routine is finished, the second step S'1''Pt is the main routine.
At T P 2, subtitle sensing is performed. G from this state! 43 Step 5 TP3 Micro Combiator (
13) judges whether the received broadcast is a subtitled program or not.
If O, then return to the second step S'rP2, but if “YE
If it is “S”, memorize the last subtitle data w&(16)
Leading from the fourth step 5TP4), the fifth step STPs determines whether the last subtitle data stored in the memory hand 11 (16) is the last subtitle data,
“In NOm, return to the second step 5TP2, but YES”
If so, as shown in the sixth step S T P @, by inputting the subtitle mode data to the character signal processor (14), if there is a subtitle program, the subtitle program is automatically displayed on the display means (11). It will be done.

gA6 step S T P s is followed by second step 5T
All you have to do is return to P2 and repeat the same operation.

In the embodiment described above, the state of the last subtitle is stored in advance in the storage means (16) such as MNOS, but another embodiment of the present invention will be described with reference to FIG. Note that parts corresponding to those in FIG. 1 are designated by the same reference numerals, and redundant explanation will be omitted.

As shown in FIG. 4, a storage means (16a) is provided in place of the storage means (16) shown in the first figure. This storage means (16a)
is composed of switching means (18). That is, one end of the switching hand 1 (18) is connected to the high potential side via the resistor IR, and the other end is grounded. Since people with AI sensitivity always watch subtitled programs, if this forced subtitle switching means (18) is always turned on, they can watch subtitled programs without operating the subtitle key (1?b). When the program starts, the subtitle program is automatically displayed on the display means (11), and the control line (13c) is sent from the character signal processor (14) to the microcomputer (13).
The status signal of the presence or absence of subtitled programs is input through
Further, the microcomputer (13) checks whether the switching means (18) is on or off and supplies an on/off status signal to the character signal processor (14) through the control line (13c). do. FIG. 5 is a flowchart for explaining the operation of such a configuration, and the first step 5THP1 is the main routine;
After the first step 5 THPt, the second step 5 TBP
2, the microcomputer (13) determines whether it is a subtitled program or not.

If so, return to the first step 5TIEPt, but @YES
”, the control line (1
3c) to which the subtitle status signal is sent to the micro combinator (13) at the third step STI! P
3, the micro combinator (13) stores the storage means (16).
When the subtitled program in a) is broadcast, the switching hand l1l (18) which is forcibly used as a subtitled program is checked to see if it is in the "1 on" state, and if it is in the "off" state, the first step STi!Pt
However, if the state is "6 on", the state of the flag to prevent data from being sent each time is checked in the fourth step, and if the flag is "1", the process returns to the first step 5THPx, but if the flag is If “O”, proceed to the next 5th step 5TE
Ps sends the subtitle program selection data to the character signal processor (14), and the sixth step STI! Ps sets the flag to “1” and the first step STI! By returning it to Pt, the display hand 1 (11) becomes, for example, a subtitle display mode in which subtitles are displayed on the television screen.

Note that the present invention is not limited to the embodiments on the ridges, and various modifications can be made without departing from the gist of the present invention.

[Effects of the Invention J] The present invention is structured as shown in Unegami.If a text broadcast becomes a subtitled program, it will automatically become a subtitled program without any operation by the user, which is extremely useful for hearing-impaired people. A useful teletext receiver is obtained.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the teletext receiver of the present invention, FIGS. 2 and 3 are diagrams showing an example of an operation flowchart of the teletext receiver of the present invention, and FIG. 4 is a diagram showing an example of the operation flowchart of the teletext receiver of the present invention. FIG. 5 is a diagram showing another example of a flowchart of the operation of the teletext receiver according to the present invention. (10) is an R, G, B switching circuit; (11) is a display means;
(14) is a character signal processor, (16), (1
6a) is a storage means, (17) is a remote control operation means, (
18) is a switching means.

Claims (1)

[Claims] A teletext receiving device capable of receiving a television signal and a teletext signal, comprising a storage means for storing whether a subtitle program in the teletext signal is selected or not selected; A teletext receiving apparatus, characterized in that the initial state of the receiving apparatus is set at the time of the next subtitle program in a teletext signal, depending on the storage state of the storage means.