JPS60170375A - Video text receiving device - Google Patents

Abstract

PURPOSE:To simplify operation by storing the page number of a frequently used video text in a memory circuit beforehand and indicating the content of text of a desired page when necessary only by operating a specified operating button once. CONSTITUTION:Function buttons F1, F2, F3 and a write button STORE are added to an operating section 17. A page to be memorized is indicated in a CRT by a ten-key system, and a button STORE is depressed. Then, a microcomputer 12 becomes stand-by. When the button F1 is depressed next, the computer 12 writes the page number presently indicated in an address corresponding to F1 in a memory circuit 18. Similarly, page numbers are written in buttons F2, F3. In reading out page numbers, if, for instance, the button F1 is depressed, the computer 12 detects that the F1 is depressed, and reads the page from a memory address corresponding to F1 and sends to a decoder 11. Similarly, sending to the decoder 11 is made for the F2, F3. Thus, operation is simplified.

Description

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

Configuration of a conventional example and its problems FIG. 1 shows a block diagram of a conventional color television receiver with a built-in video text decoder, and FIG. 2 shows an example of the layout of the remote control transmitter operation buttons. Also, part of the notware of the microcomputer is shown in f M 319 which decodes the remote control signal and sends the page control signal to the video text decoder.

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, and 7 is an audio amplification circuit. ]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 a video text decoder 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; and 12 is a decoder for decoding the remote control signal. The microcomputer consists of a channel selection circuit that controls the TV channel, and a remote control decoder channel selection circuit that controls the video text decoder and sends page data. 13 is a remote control preamplifier that amplifies the remote control signal; 14 is an infrared light receiving diode; 16 is an infrared light emitting diode;
6 is a remote control transmitter, and 17 is an operation section.

Next, the operation will be explained. Switch 1o is normally used to increase the video [
1] It is connected to the circuit 4 and projects an image on the cathode ray tube 9 based on a television signal inputted from the cheese 1.

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 works 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 0XD 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 C■ button is a switch for switching from text mode to a state in which television signals are received (hereinafter this state will be referred to as television mode).

When the σD button in FIG. 2 is pressed, a remote control signal corresponding to the m button is output from the remote control transmitter 16 in FIG. The signal is converted back into an electrical signal by the light receiving diode 14 and amplified by the remote control preamplifier 13)
After t, the signal is sent to the remote control decoder channel selection circuit 12.

This circuit is composed of a microcomputer, and after decoding the remote control signal, the microcomputer sends a signal (hereinafter this signal will be referred to as a text code) to switch the video text decoder 11 to the text mode to the video text decoder 11.

The video text I decoder 11 receives this text food, sets the switch 1o to the video text decoder 11 side, and displays the video text signal on the cathode ray tube 9. At this time, the page "100" is usually selected.

Next time you want to change the page, use the numeric keypad shown in Figure 2.
You can select any page in page size from ``000'' to r999J by pressing any three buttons. For example, “1
23" page, press the buttons in the order of ■→■→■. In this way, the remote control decoder tuning circuit 12 and the video text decoder 11 will receive the code "1" and the code "
2".

Code [-3] signals are sent in sequence, and when the code 3 signal is sent, the page changes to "123".

A part of the flowchart 1 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 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 The present invention eliminates the above-mentioned drawbacks by storing some frequently used pages in advance in a memory circuit, and when needed, the required page number corresponds to the address of the stored memory circuit. By operating the keychain switch, the desired page content can be displayed with a single button operation.The keyboard means is equipped with a writing switch, and after operating this switch, the function switch is operated to read the memory circuit. It is an object of the present invention to provide a video text device capable of storing in advance arbitrary page numbers frequently used by a user by writing and storing the page number of the current page in an address corresponding to each function. .

SUMMARY OF THE INVENTION The present invention provides a video text decoder circuit for extracting and decoding a video text signal multiplexed with a television signal, a keyboard means for inputting commands for controlling the operational functions of the video text decoder circuit, and a keyboard for inputting commands for controlling the operational functions of the video text decoder circuit. A code decoding circuit that receives a command code signal sent from the means, decodes the code, and transmits the command contents to the video text decoder circuit as necessary, and a memory circuit whose one reading is controlled by the code decoding circuit. and the keyboard means is provided with function switches Fl, F2. , , and a write command switch are provided, and the code decoding circuit decodes the command from the funkunyong switch, and reads the page information written in the corresponding address of the function written in advance in the memory circuit. and tells the video text decoder to read and display the page.

Further, the code decoding circuit decodes the command from the write switch, waits for a fashion switch command, and writes the current page number to the address corresponding to each funk/yeon switch in the memory circuit. By pre-memorizing frequently used page numbers in the memory circuit, the page number can be read out with a single button operation, and the page number can be sent to the video text device to easily display the desired page number. It is capable of displaying text pages.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A block diagram of a color television receiver with a built-in video text decoder, which is an embodiment of the present invention, is shown in FIG.
An example of the remote control transmitter operation button layout is shown in Section 5.
FIG. 6 shows part of the software of the microconbeater which decodes the remote control signal and sends the page control signal to the video text decoder.

In FIG. 4, portions 1 to 17 are the same as portions 1 to 17 of the conventional example (FIG. 1), and their explanation will be omitted.

18 in FIG. 4 is 1 by the remote control decoder tuning circuit 12.
A memory circuit that controls reading and writing, and stores page numbers.

FIG. 6 is an example of the operation section 17 shown in FIG. 4, and compared to the conventional example (FIG. 2), the function button
．． 'F5 and write button 5TORE have been added.

FIG. 6 is a part of the operation flowchart of the remote control decoder tuning circuit 12 shown in FIG. 4, and compared to the conventional example shown in FIG.
RB: Branch routines for buttons and their respective processing routines have been added.

Comparing FIGS. 1 to 3 with FIGS. 4 to 6, those in FIGS. 4 to 6 include the configuration of the conventional example shown in FIGS. 1 to 3. From this, it can be seen that the page control using the conventional numeric keypad method is partially effective even in FIGS. 4 to 6.

Next, the added functions will be explained.

It is necessary to store frequently used page numbers in the memory circuit 18 at any time. To do so, follow the steps below. First, the page to be memorized is displayed on the cathode ray tube 9 using the conventional ten-key system. For example, let's say "250" pages. By pressing "2", "5", and "O" on the numeric keypad, the r250J page will be displayed. next,"
The remote control decoder tuning circuit 1
Notify the microcomputer that constitutes 2. To do this, press the write switch (5TOPK) shown in Figure 5.

When the microcombeater 12 reads this signal wr,
It enters a writing standby state.

Referring to the flowchart of FIG. 6, when the main routine is running, a remote control signal is received and the process jumps to a remote control decoding routine.In this routine, a check is made to see if it is in text mode, and a branch is made. In this case, we are in text mode, so we branch and enter the determination routine. Check what kind of signal is being sent here. In this case 5 TORT! , I pressed the switch, so 5TO
Branch at the branch part of RE check. The microconbeater 12 is on standby in this state.

Next, it is necessary to specify the storage location of the memory circuit 18. In this example, three storage locations can be selected: F, , F2, and F5, but let's assume that it is stored in Fl. F
Press the funk 7 switch. Then, the microcomputer 12 recognizes that Fl has been pressed and writes the number "250" of the currently displayed page into the address corresponding to Fl in the memory circuit 18. This can be understood from the work at the branch destination of 5TORH in the flowchart of FIG. The page number for the Fl switch has now been memorized.

Page numbers can be stored for other function F2 and F5 switches using the same procedure.

Next, the case of reading the page number will be explained. For example, “2
60'' page shall be displayed. At this time, press ``2'' on the numeric keypad like before.

You can press r5J and rOJ, but you don't have to do that, just press the Fl switch. When the F1 switch is pressed, the microcomputer 12 detects that Fl has been pressed and processes the Fl branch destination in the flowchart of FIG. That is, the page is read from the memory address corresponding to F,llIc and sent to the decoder. In this case, F
Since the page number "250J" is written in the memory address corresponding to 1vC, this number is sent to the decoder 11, and the text contents of the page "250J" are displayed on the cathode ray tube 9.

In addition, in this actual example, the numeric keypad and funk key + yl
, F2, etc. have been explained as separate switches, but they can also be used as the same switch and the numeric keypad can also function as the same switch. For example, if you press numeric keypad 1 for a certain period of time or more, it will be considered as pressing Fl, and if it is shorter than that, it will be considered as pressing numeric keypad 1.
Configure the software so that it is assumed that the button is pressed. This can be done easily, and the number of operation buttons is reduced, making it easier to use.

Effects of the Invention As described above, according to the present invention, the page numbers of frequently used videotegists are stored in advance in the memory circuit, and when needed, the operation button corresponding to the address of the memory where the necessary page number is stored is pressed. The text content of the desired page can be displayed with just one operation, which is much easier than the previous three operations.

[Brief explanation of the drawing]

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 used in a channel selection circuit. FIG. 4 is a block diagram of a video text receiving device according to an embodiment of the present invention, FIG. 5 is a front view showing an example of an operation unit according to an embodiment of the present invention, and FIG. 1 is a flowchart of a microcomputer used in a remote control decoder channel selection circuit according to an embodiment of the invention. 10. --Tuner, 2...Intermediate frequency amplification circuit, 3...Detection circuit, 4...Video amplification circuit, 5...Audio intermediate frequency amplification circuit Width circuit, 6...
...Audio detection circuit, 7...Audio amplification circuit, 8.
...Speaker, 9...Cathode-ray tube, 10.
...Switch, 11...Video text decoder, 12...Remote control decoder tuning circuit, 1
3...Remote control preamplifier, 14...
Infrared light-receiving diode, 16. Infrared light-emitting diode, 16...Remote control transmitter, 17゛°°゛・°
Operation section〇 Name of agent Patent attorney Toshio Nakao and 1 other person Figure 2 Figure 3 Figure 5 Figure 6 Figure

Claims (1)

[Claims] a video text decoder circuit for extracting and decoding a video text signal multiplexed with 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 command contents to the video text decoder circuit as necessary; and a memory circuit whose writing/reading is controlled by the code decoding circuit; A function command switch and a writing command switch are provided.
The command from the funk7yon switch is decoded by the code decoding circuit, the page information tm written in the corresponding address of the funk7yong previously stored in the memory circuit is extracted, and the page is displayed. At the same time, the code decoder circuit interprets the command from the write command switch, waits for the command from the function switch, and writes the current page to the address corresponding to each function in the memory circuit. Writing a number f: Video text receiving device featuring features.