JPS60170374A - Video text receiving device - Google Patents

Abstract

PURPOSE:To simplify button operation by providing a commanding switch for page-up and page-down in an operating section, interpreting command from the commanding switch by a code interpreting circuit, and outputting the content of present page +1 or -1 page. CONSTITUTION:A page-up button and a page-down button are added to the operating section 17. When the page up button or page down button is depressed in a text mode, a microcomputer 12 sends a code of ''present page +1'' page or ''present page -1'' page to a video text decoder 11. Basing on this action, the decoder 11 receives the content of ''present page +1'' page or ''present page -1'' page and projects on a CRT9. Thus, when adjoining page of present page is desired, one button operation, conventional three operations are required, becomes enough for the purpose, and selection can be done efficiently by simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for receiving a video text signal that is multiplexed onto a color television signal.

Conventional configuration and its problems Figure 1 shows a block diagram of a conventional color television receiver with a built-in video text decoder, and Figure 2 shows an example of the remote control transmitter operation button layout. Part of the microcomputer software that sends page control signals to the video tech decoder is shown in FIG.

In FIG. 1, 1 is a tuner, 2 is an intermediate frequency amplification circuit, 3 is a detection circuit, 4 is a video amplification circuit, 5 is an audio intermediate frequency amplification circuit, 6 is an audio detection circuit, 7 is an audio detection circuit, 8 is a speaker, and 9 is a cathode ray tube. 10 is a switch for switching between a television signal and a video text signal; 11 is an IJ that extracts a video text signal from the video signal detected by the detection circuit 3 and displays the video text signal on a cathode ray tube 9;
The video text decoder 12 is composed of a microcombicoater, which is a channel selection circuit that decodes the remote control signal and controls the channel 1, and a remote control decoder channel selection circuit that controls the video text decoder 11 and sends page data. be done. 13 is a remote control preamplifier that amplifies the remote control signal; 14 is an infrared light receiving diode; 15 is an infrared light emitting diode; 16 is a remote control transmitter; and 17 is an operating section.

Next, the operation will be explained. Switch 10 usually increases the video
] Connected to the circuit 4, an image based on a television signal inputted from the tuner 1 is displayed on the cathode ray tube 9.

Now, assume that the user operates the operation unit 17 to receive a video text signal. An example of the operation section 17 is shown in FIG. ■～■
The numeric keypad up to acts as a TV channel switch when a TV signal is being received, and as a video text page input switch when a video text is being received.

The O button is a switch for switching from a state in which a television signal is being received to a state in which a video text signal is being received (hereinafter this state will be referred to as text mode). The O button may be in text mode or in the state of receiving TV signals (
This is the switch to switch to the TV mode (hereinafter referred to as TV mode).

When the button ■) in FIG. 2 is pressed, a remote control signal corresponding to the button ■ is output from the remote control transmitter 16 in FIG. This remote control signal is converted into an optical signal by the light emitting diode 15. This optical signal is converted into an electric signal again by the light receiving diode 14, amplified by the remote control preamplifier 13, and then sent to the remote control decoder tuning circuit 12. This circuit consists of 12 microcomputers,
After decoding the remote control signal, the microcomputer sends to the video text decoder 11 a signal for switching the video text decoder 11 to text mode (hereinafter this signal will be referred to as a text code). video text decoder 1
1 receives this text code, sets the switch 10 to the video text decoder 11 side, and displays the video text signal on the cathode ray tube 9. The page at this time is usually ``100''.
” page is selected. Next time you want to change the page, click the second button.
Press any three of the numeric keys ■ to ■ in the figure to select "o."

Any page from "0" to "999" pages can be selected. For example, if you want to see page 123J,
Press the buttons in the order of ■-■. In this way, the signals of code "1", code "2", and code "3" are sent in order from the remote control decoder tuning circuit 12 to the video text decoder 11, and when the signal of code 3 is sent, the page changes to r123J. change. A part of the flowchart of the microcomputer forming the remote control decoder channel selection circuit 12 at this time is shown in FIG. In the main routine, the remote control and other items are checked. When a remote control signal is received, the program jumps to the remote control decoding routine. The remote control decoding routine checks whether the mode is text mode or not, and if it is text mode, the process jumps to the determination routine. In the determination routine, it is determined what kind of signal the signal sent from the remote control transmitter 16 is, and if it is a signal from the numeric keys 1 to 2, the corresponding code is sent to the video text decoder 11.

In this way, with conventional receiving devices, the user must press the button three times each time he changes pages of video text, even if the desired page is the page next to the current page. This causes the inconvenience of being troublesome.

OBJECTS OF THE INVENTION An object of the invention is to eliminate the above-mentioned drawbacks and to provide a video text receiving device that can receive a desired page with a single button operation if the desired page is adjacent to the current page. shall be.

Structure of the Invention In the invention, the operation panel has page up and page down buttons, and when you press those buttons in text mode, the page goes up by ``current page + 1'', and the page goes down by ``current page + 1''. Current page-1”
The microcomputer software that controls the page of the video text decoder is configured to send a control code to the video text decoder to receive each page, so that if the desired page is next to the current page, If you press a button once, you can receive the desired page, making it extremely easy to use.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The block diagram of the entire color television receiver is the same as the conventional example, so please refer to FIG.

FIG. 4 shows an example of the operation section 17 shown in FIG. FIG. 5 is a part of a flowchart of the microcomputer used in the remote control decoder tuning circuit 12 of FIG.

In FIG. 4, compared to the conventional example shown in FIG. 2, page up and page down buttons are added. Furthermore, in FIG. 5, compared to the conventional example shown in FIG. 3, page-up and page-down branches are added in the determination routine.

As can be understood from FIG. 6, for example, if the page up button or page down button in FIG. page + 1" page also (l-1: "
The code of the current page-1 page is sent to the video text decoder 11.

Thereby, the video text decoder 11 receives the contents of the "current page + 1" page or the "current page - 1" page and displays it on the cathode ray tube 9.

As described above, the non-inventive method is to provide page up and page down buttons on the operation panel, and use microcomputer software that decodes the signals to control the "current page + 1" page when the page is up. fll code, and when the page is down, control the "current page - 1" page.
By sending the code to the video text decoder, when you want to go to the page next to the current page, you only need to press the button once instead of three times, allowing for efficient selection with simple operations. It is something that can be done like this.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an example of a color television receiver with a built-in video text decoder, Fig. 2 is a front view showing an example of a conventional operation unit, and Fig. 3 is a conventional remote control decoder channel selection circuit. FIG. 4 is a front view of an IE showing an example of the operating section of the video text receiving device in an embodiment of the invention; FIG. 5 is a diagram showing a part of flowchart 1 of the microcomputer used; FIG. It is a figure which shows a part of flowchart of the microcomputer used for the remote control decoder channel selection circuit of an example. 1...Tuner, 2...Intermediate frequency amplification circuit, 3...Detection circuit, 4...Video amplification circuit, 5...Audio intermediate frequency Width increasing circuit, 6...
Audio detection circuit, 7... Audio amplification circuit, 8...
・Speaker, 9゛・°・Cathode-ray tube, io-゛--switch, 11°...Video text decoder, 12°
゛...Remote control decoder tuning circuit, 13°°°゛Remote control preamplifier, 14°゛°゛°infrared receiving diode, 1
6...Infrared light emitting diode, 16...Remote control transmitter, 17-=゛operation unit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 4

Claims (1)

[Claims] a video text decoder circuit for extracting and decoding a video text signal multiplexed on a television signal; keyboard means for providing commands to control the operational functions of said video text decoder circuit; and command code signals sent from said keyboard means. a code decoding circuit that receives the code, decodes the code, and transmits the command content to the video text decoder circuit as necessary; the keychain means is provided with a page up and page down command switch, and the command switch receives commands from the command switch; The video text receiving device is characterized in that the code is decoded by the code decoding circuit and transmitted to the video text decoder circuit to display the text contents of the (current page→-1) page or (current page-1) page, respectively.