JP2506683B2 - Teletext receiver - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiver capable of receiving and displaying text / graphic information such as teletext.

2. Description of the Related Art In text broadcasting, when a TV program is super-displayed using a character graphic, the lines, narration, and contents of the TV program are called subtitle programs.

Conventionally, when selecting this subtitle program, the subtitle key is pressed by key input or the number corresponding to the subtitle program (for example,
999), and continued to search until the subtitle program was sent.

 A conventional example will be described below with reference to the drawings.

FIG. 5 shows an example of a conventional teletext display device. In FIG. 5, reference numeral 1 is a character signal extracting unit, which extracts a character broadcasting signal from a video signal from a video input unit in one vertical synchronization period, acquires data for each scanning line into an internal buffer RAM, and then controls An interrupt request is issued to the section 4. Two
Is a key input section, which is a man-machine interface when a user requests teletext. Reference numeral 3 denotes a key processing unit which determines an input from the key input unit 2, encodes the input, and issues an interrupt request to the control unit 4. The control unit 4 searches the buffer RAM of the character signal extracting unit 1 for a program requested by the initial setting or the key input unit 2 and the key processing unit 3. Buffer RAM above
When there is a requested program in the control section 4, the control section 4 writes a character / graphic on the VRAM 5 according to a predetermined procedure. VRAM5 is video
The RAM reads the character / graphic information written at that time in synchronization with the video synchronizing signal and outputs it to the video synthesizing unit 7. A converting unit 6 converts the video signal from the video input unit into an RGB signal and outputs the RGB signal to the image synthesizing unit 7. The video synthesizing unit 7 switches and synthesizes the video signal from the VRAM 5 and the video signal from the converting unit 6, and outputs the video signal to the display 8 such as a CRT.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional configuration, when a teletext user uses a subtitle program, the subtitle key is pressed to bring the teletext receiver into a search state for the subtitle program. However, this has a drawback that the subtitle key must be pressed before the subtitle program is transmitted, and other teletext programs cannot be used during that time.

Further, there is a drawback that the subtitle program cannot be fully used due to a change in the program time or a delay in pressing the subtitle key. Furthermore, on some conventional teletext receivers, when the subtitle key is pressed any time earlier than the time when the subtitle program is transmitted, a message "Subtitles are not transmitted" is displayed, and the next request operation is performed. Until then, not only subtitles but also some programs will be in a search standby state, and there was a drawback that subtitled programs could not be used from the beginning unless the photo key was pressed within an arbitrary time after the start of subtitled program broadcasting.

In view of the above problems, the present invention aims to provide a teletext receiver that can immediately display a subtitle program when a subtitle program is sent even if a normal teletext program is used.

Means for Solving the Problems To achieve the above object, the present invention provides a means for setting a subtitle program priority mode, a storage means such as a register for storing whether or not the priority mode of a subtitle program is set, A head detecting means for detecting the head of the program configuration data group,
A subtitle program number storage unit for storing a program number of a subtitle program, and a display sentence storage unit for storing a display sentence (message) indicating whether the subtitle program priority mode is set or released, When the program priority mode is set, the storage means stores this mode, the display sentence is read from the display sentence storage means and displayed to that effect on the screen, and the head detection means is activated to display at the head of the data group. The included program number is compared with the program number stored in the subtitle program number storage means, and if they match, the subtitle number is immediately displayed even if another program is being searched.

With the above-described configuration, the present invention is configured to set the subtitle program priority mode when the subtitle program of the teletext is being broadcast and the subtitle program is to be preferentially used.
Set the subtitle program priority mode discrimination register to the subtitle program priority mode. At this time, the display text is read from the display text (message) storage means, and "Jimaku Yusen" is displayed on the screen.

When the subtitle program priority mode discrimination register is set,
The means for detecting the beginning of the data group forming the program operates, compares the program number included in the beginning part with the program number stored in the means for storing the subtitle program number, and if they match, searches for another program Even in the middle, the subtitle program is displayed immediately.

Also, when the subtitle program priority mode discrimination register is released from the subtitle program priority mode by the means for setting the subtitle program priority mode, the display text is read from the display text (message) storage means and "Jimaku Yusen Kaijo" is displayed on the screen. Is displayed.

With the above operation, even if a normal teletext program is used, when the subtitle program is sent, the subtitle program can be displayed immediately.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

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

It should be noted that, in FIG. 1, those having the same numbers as those in the conventional example shown in FIG. 5 have the same functions, and detailed description thereof will be omitted. In FIG. 1, reference numeral 10 denotes a subtitle priority key, which constitutes a part of various keys included in the key input unit 11. The subtitle priority key 10 is a key to be input when the subtitle program is broadcast and is switched to the subtitle program when the subtitle program is prioritized. The key input unit 11 is means for inputting each key including the subtitle priority key 10.

A key processing unit 12 processes key input data of the key input unit 11. A control unit 13 processes and controls various data.

A subtitle priority mode on / off display data section 14 has data for displaying as a message whether the subtitle program is set to the priority mode or released.

A subtitle priority mode register 15 stores whether or not the subtitle program is in the priority mode. A subtitle program number register 16 stores the subtitle program number requested via the key input unit 11.

Next, the operation of the above configuration will be described. When the subtitle priority key 10 is pressed, the key processing unit 12 discriminates this input, codes it, and makes an interrupt request to the control unit 13. When this key input is first discriminated after initialization, the control unit 13 takes in display data for subtitle priority from the subtitle priority mode on / off display data unit 14, writes a message in the VRAM 5, and causes the display 8 through the video synthesizing unit 7. As shown in Fig. 2, "Jimaku Yusen" is displayed above. When the subtitle priority key 10 is pressed again, "Jimaku Yusen Kaijo" as shown in FIG. 3 is displayed by the same process. Hereinafter, when the subtitle priority key 10 is pressed, the above display is alternately repeated. At the same time as this display operation, the subtitle priority mode register 15 is set or reset.

The control unit 13 displays the subtitle priority by pressing the subtitle priority key 10, sets the subtitle priority mode register 15, and at the same time, starts the program head detection operation, and sets the subtitle number (for example, 999: defined in the operational restrictions). Is stored in the subtitle program number register 16 (for example, a register that digitizes 999) that is stored by being encoded.
999) and the program number detected at the beginning are compared. If the numbers match, the subtitle program is preferentially captured as the subtitle program. A flowchart of this process is shown in FIG.

When the subtitle priority mode is set as described above, the subtitle program is displayed immediately when the subtitle program is detected regardless of the search state up to that point. The display procedure is the same as that shown in the conventional example.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiments, according to the present invention, once the subtitle priority mode is set, a normal teletext program can be used until the subtitle program is transmitted, and the subtitle program is broadcast. Then, the effect of displaying the subtitle program immediately can be obtained.

Since subtitle programs can be used in this way, it does not miss the subtitle program, there is no need to detect subtitle broadcast in advance or request subtitles immediately before the start of broadcasting To be In particular, it is very convenient for people who need subtitles, and also has the effect of helping to spread teletext.

Needless to say, the present invention also includes a case where the means for setting the subtitle priority setting is changed and a case where the message for turning on and off the subtitle priority display is changed.

[Brief description of drawings]

FIG. 1 is a block diagram of a teletext receiver according to an embodiment of the present invention, FIG. 2 is a screen view showing an example of a display message when subtitles are prioritized, and FIG. 3 is an example of a display message when subtitles are released. A screen diagram shown in FIG. 4, FIG. 4 is a flowchart of processing when subtitles are prioritized, and FIG. 5 is a block diagram of a conventional example. 1 ... Character signal extraction unit, 5 ... VRAM, 6 ... Conversion unit, 7
...... Video synthesizer, 8 ...... Display, 10 ...... Subtitle priority key, 11 ...... Key input section, 12 ...... Key processing section, 13 ...... Control section, 14 ...... Subtitle priority mode ON / OFF display data section, 15
...... Subtitle priority mode register, 16 …… Subtitle program number register.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Kondo, Kazuma, 1006 Kadoma, Kadoma City Matsushita Electric Industrial Co., Ltd. (56) References JP-A-60-31379 (JP, A)

Claims (1)

(57) [Claims] 1. A means for setting a subtitle program priority mode in which it is desired to give priority to a subtitle program which is broadcast as one program form of text broadcasting over other programs, a register which stores whether or not the priority mode is set, and the like. Storage means, head detection means for detecting the head of the data group forming the program, subtitle program number storage means for storing the program number of the subtitle program, and whether the subtitle program priority mode is set or released. A display sentence storage means for storing a display sentence (message) indicating whether or not, and when the subtitle program priority mode is set, the mode is stored in the storage means, and the display is read from the display sentence storage means and displayed on the display. Is displayed, and the head detecting means is operated to display the program number included in the head part of the data group and the program number stored in the caption program number storage means. Compare, and matching the teletext receiver comprising configured to display the subtitle program immediately on the display.