JP2623622B2 - Teletext receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a teletext receiver suitable for channel selection.

[Summary of the Invention]

The present invention relates to a teletext receiver suitable for channel selection, and in a teletext receiver capable of receiving teletext and television broadcast, a preset for selecting a television broadcast or teletext of this reception channel together with a reception channel. A key is provided to store information on whether it is a television broadcast or a teletext broadcast so that a teletext broadcast can be received directly.

[Conventional technology]

2. Description of the Related Art In recent years, a text broadcast for transmitting a text broadcast program using a time gap of a television broadcast wave has been performed.
This teletext program broadcasts various kinds of information such as various news, weather forecasts, traffic information, stock market conditions and the like, as well as various kinds of information such as a subtitle super program and a quiz program in a hybrid system. Such a character broadcast signal, that is, pixel pattern data such as characters and figures, is converted into a digital signal, and a control signal indicating a magazine number, a program number, and a page number representing a program group is added, and a large-capacity storage means is provided. To be stored. Further, a synchronization code, an error correction code, and the like necessary for transmission are added to the stored data, and the teletext signal is superimposed on a vertical blanking period of the television signal by a multiplexer. (In the first odd field, the 14th horizontal period (H), 15H, 16th
H and 21H are 27th in the even field of the next field.
7H, 278H, 279H and 284H. ) Such a teletext signal is transmitted as radio waves from a transmitting device.
The detected video signal is supplied to a character signal decoder, and the character signal superimposed in the vertical blanking period is separated from the video signal.
A desired teletext program is selected by, for example, a remote control operation means, a text signal is decoded, and this decoded signal is supplied to a text signal generator to display the text signal on a cathode ray tube. . The details of such a teletext receiver are disclosed in Japanese Patent Application Laid-Open No. 59-165852 previously proposed by the present applicant.

Further, in a television receiver or the like, for example, a voltage and synthesizer method (VSS) is used to perform channel presetting for storing reception tuning frequencies from the first channel to the twelfth channel of VHF, which is a reception channel of television broadcasting, in a storage means. ) Tuning tuner is used.

Such a tuning tuner is disclosed in Japanese Patent Application Laid-Open No. 61-158209 proposed earlier by the present applicant.

[Problems to be solved by the invention]

The applicant proposes a teletext receiver as described above, in which a key or remote control operation means provided on the receiver is used to switch between a teletext signal reception mode and a normal television broadcast reception mode. Japanese Patent Application Laid-Open No. 55779/1985. This operation means is miniaturized and has many operation keys. An example of such an operation means is composed of a number of keys as shown in FIG. 4. When receiving a text broadcast, a predetermined channel is selected by a channel key (17a) shown in FIG. In addition, there is a disadvantage that the text broadcast must be selected with the text / television switching key (17b), and the operation becomes two operations, which is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, and an object of the present invention is to enable direct reception of a text broadcast by one operation.

[Means for solving the problem]

One example of a teletext receiver according to the present invention is a teletext receiver capable of receiving teletext and television broadcasting as shown in FIG. In the receiver (1), teletext decoding means (14) and channel selection means (18) (1
9) A microcomputer (13) for controlling, and a system for transmitting and receiving data to and from the microcomputer (13). Whether to display a channel number and a text broadcast video or a television broadcast video. (16), which can store identification information indicating the channel position number corresponding to the channel position number, and a video of a television broadcast which is controlled by the microcomputer (13) and output from the channel selecting means (18, 19). Switching means (10) for selecting and outputting one of a signal and a teletext video signal output from the teletext decoding means (14); a position selecting section for specifying at least a channel position number; And an input operation means (17) having an identification information input section for inputting.
3) storing the channel number and the identification information in the storage means (16) corresponding to the channel position number in accordance with the operation of the position selection section and the identification information input section of the input operation means (17) at the time of setting; At the time of channel selection, the channel number and the identification information stored in the storage means (16) are read out according to the operation of the position selection section, and the channel selection means (18) (19) are controlled according to the channel number. The switching means (10) is controlled according to the identification information.

[Action]

Since the teletext receiver of the present invention stores teletext information in the storage means (16) with the channel setting key (17c) in the operating means, the teletext information stored in the empty channel of the television broadcast is stored. Information of channel key 1
You can tune directly by pressing twice.

〔Example〕

An embodiment of the teletext receiving apparatus according to the present invention will be described below with reference to FIGS.

In FIG. 1, a teletext receiver (1) is one in which a teletext decoder is incorporated in a television receiver, a normal television signal is caught by an antenna (3), and a VSS electronic tuning tuner ( A channel is selected in 4), and is separated into a video signal and an audio signal by a video intermediate frequency amplifier circuit (5). The video signal is detected by a video detection circuit (6), and video and audio signals are switched between a text broadcast and a television broadcast. Audio / video switching circuit (8) → video / color signal processing circuit (9)
And the three primary colors red signal R, green signal G, blue signal B
Cathode ray tube (11) through RGB switching circuit (10)
To display a television screen on a cathode ray tube. The audio signal is emitted from the speaker (15) through the audio detection circuit (7) → video / audio switching circuit (8). When a teletext signal is included in the television signal, the video signal and the audio signal obtained by the video detection circuit (6) and the audio detection circuit (7) are sent to a text signal processor (14) including a text signal decoder. The supplied character and graphic signals are decoded from the video signal. Of course, the contents of these teletext programs are selected by the remote control operation means (17), and the selection command data received by the remote control receiver (12) is supplied to the microcomputer (13), and the tuner (4) and the text signal processor are provided. (14) is operated.

The decoded character signals are converted into analog R, G, B primary color signals, and supplied to an R, G, B switching circuit (10). Characters and graphics are converted to cathode ray by a control signal from a character signal processor (14). Displayed on the tube. Also, when a melody is played in accordance with the display of the musical score, additional sounds and the like are similarly decoded by a decoder in the character signal processor (14) and supplied to the video / audio switching circuit (8), and are controlled by the character signal processor (14). The signal is emitted from the speaker (15). When superimposing a teletext screen on a television broadcast screen, the R, G, B
The signals are combined with the R, G, B signals from the video and color signal processing circuit (9) and displayed on the cathode ray tube. Further, the microcomputer (13) has storage means (16) composed of nonvolatile EEPROM and the like in addition to storage means such as ROM and RAM for normal systems.
The received text broadcast channel or text broadcast channel number or the like is preset in the storage means (16), corresponding to the channel position number.
When the memory is stored in this manner, the remote control operating means (17)
By selecting the channel key (17a), the storage means (1
The corresponding tuning data is read out from 6), and the output signal output as a PWM output by the digital-analog conversion circuit in the microcomputer (13) is integrated into the integration circuit (1).
8), and when a channel specified as a predetermined tuning voltage Vc is selected, the microcomputer (13)
Supplies band switching data to the band switching circuit (19), and outputs a VHF or UHF channel band switching signal to the tuner (4), and the tuner (4) is switched to VHF or UHF. The microcomputer (13) is also supplied with an output from the video detection circuit (6) required at the time of presetting.

The operation for presetting in the nonvolatile storage means (16) in the above configuration will be described with reference to the flowchart in FIG. 2 and an example of the preset position in FIG.

When the program of the microcomputer (13) is started, the first step ST ₁ main processing routine is performed, whether or not performing the determination second step ST ₂ the channel setting has been made. Here, channel setting key (17
If the channel settings have been made in preset key is c) through other processing of the third step ST ₃ is returned to the first step ST ₁ of the main routine, but if the channel setting is performed, a fourth step ST This channel setting key (17c) is pressed first as shown in ₄ (first time)
Or, a determination of whether the last pressing Run 2, the last fifth step ST _5, if pressed operation is performed to switch the normal mode and returns to the first main processing routine in step ST _1. TV / character switching key advances fourth step ST ₄ is a sixth step ST _6, if the pressing of the start (17b) is pressed, TV
It is determined whether the mode is selected or the teletext mode is selected.
The mode with teletext mode _7, the mode in the eighth step ST ₈ If TV mode and a television mode, the seventh and eighth step ST _7, ST ₈ after completion of the storage means in the ninth step ST ₉ ( Decide which broadcast station to store in step 16). Then the tenth
In step ST ₁₀ is stored in the storage means determines the memory position (16), for example, an empty channel of the third channel position No if Tokyo District as shown in figure 2C
H, 5CH, 7CH, 9CH, 11CH. Usually this empty channel
The broadcasting channels such as VHF, VIDEO, and CABLE are switched. As an example of putting each channel of teletext into this empty channel, 5CH is teletext NHK (first), 7CH is teletext Nippon Television, and 12CH is teletext TV Tokyo in the storage means (16). Remember. The first step ST ₁ of the main processing routine after the end of such a tenth step ST ₁₀
Back to.

Since the present invention operates as described above, pressing "5" of the channel key (17a) shown in FIG. 1 and FIG. Presses "11", the teletext TV Tokyo is immediately displayed on the screen of the cathode ray tube (11) in one action.

In the above-described embodiment, whether or not the broadcast is text broadcast is stored in the storage means (16) together with the channel. However, the program number of the text broadcast may be preset.
Of step ST ₆ TV / character key (17b) in the teletext (TE ×
After selecting T), a program number may be designated by using a numeric keypad attached to the teletext receiver (1), and this program number may be stored in the storage means (16), and the program number is not deviated from the gist of the present invention. Various modifications are possible.

〔The invention's effect〕

According to the teletext receiver of the present invention, a desired channel can be selected directly by simply pressing the teletext channel desired to be viewed by himself out of the channel keys (17a) provided on the remote control operation means. In this way, there is an effect that two key presses can be avoided.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of a teletext receiver of the present invention, FIG. 2 is a diagram of a flowchart showing an embodiment of the teletext receiver of the present invention, and FIG. 3 is a preset channel position. FIG. 4 is an explanatory view showing an example, and FIG. 4 is a plan view showing a key state of a conventional remote control operating means. (10) R, G, B switching circuit, (11) cathode ray tube, (14) character signal processor, (16) storage means, (17) remote control operation means, (17a) channel key , (17b) are character / TV switching keys.

Claims (1)

(57) [Claims] In a teletext receiver capable of receiving teletext and television broadcasts, a microcomputer controlling teletext decoding means and channel selection means, and exchanging data with the microcomputer. Storage means capable of storing channel number and identification information indicating whether to display teletext video or display television broadcast video in correspondence with the channel position number, controlled by the microcomputer, Switching means for selecting and outputting one of a television broadcast video signal output from the channel selection means and a teletext video signal output from the teletext decoding means; and specifying at least the channel position number. Position selection part to perform, and identification information for inputting the identification information. An input operation unit having an information input unit. The microcomputer, when set, transmits the channel number and the identification information to the channel according to an operation of a position selection unit and an identification information input unit of the input operation unit. The channel number and the identification information stored in the storage means are read out in accordance with the operation of the position selection section when the channel is selected. A teletext receiver wherein the channel selection means is controlled and the switching means is controlled in accordance with the identification information.