JPH0630386A - Teletext receiver - Google Patents

Abstract

PURPOSE:To provide the teletext receiver in which it is not required to provide an exclusive key for reservation call and the reservation call is performed with a simple operation. CONSTITUTION:A microcomputer 10 generates a table representing a cross reference between 4-color keys, a program position (channel) and a page in a storage means 13 based on a key operation of a commander 11 at the time of reservation setting. When any of the 4-color keys is depressed, a program position and page data corresponding to the depressed color key are read from the table of the storage means 13 and stored in a RAM of the microcomputer 10. Then the data of the program position are in use to control channel selection of a tuner 4, then page data are fed to a character signal processor 14 to set a page and to automatically receive a teletext program and the content is displayed on a CRT 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiver.

[0002]

2. Description of the Related Art Teletext broadcasting is performed in which teletext programs are transmitted by utilizing a time gap of television broadcasting radio waves. In this teletext, information such as various news, weather forecasts, and traffic information is broadcast by a hybrid system.

A character broadcasting signal, that is, pixel pattern data such as characters and graphics is converted into a digital signal, and a control signal indicating a magazine number indicating a program group, a program number and a page number is added, and a large-capacity storage means is provided. Stored in. Further, a synchronization code, an error correction code, etc. necessary for transmission are added to the stored data, and these teletext signals are superposed on the vertical blanking period of the television signal by the multiplexer. In the case of an NTSC television signal, the 14th to 16th and 21th H are in the odd field, and the 277H to the 2nd in the even field.
79H and 284H are superimposed.

Such a teletext signal is transmitted as a radio wave from the transmitter. In the teletext receiver, the video signal selected and detected by the television receiving circuit is supplied to the text signal processor, and the teletext signal superimposed in the vertical blanking period is separated from the video signal. Then, for example, the teletext signal according to the selection by the remote control operating means is decoded, and the decoded signal is supplied to the text signal generator to display the text signal on the cathode ray tube. Details of such a teletext receiver are disclosed in Japanese Patent Application Laid-Open No. 59-165582 previously proposed by the present applicant.

[0005]

In such a teletext receiver, there is a so-called reservation calling function for calling a particular page of the teletext previously set by the user with a particular key of the remote control operation means, for example. Something to prepare is proposed. Reservation call methods include a method of operating a key twice or more and a method of operating a dedicated key. In the former case, there is a problem that the key operation needs to be performed twice or more, which complicates the procedure. On the other hand, in the latter case, it is necessary to add a dedicated key, and for example, there is a problem that the operation surface of the remote control operation means becomes complicated.

In view of the above, the present invention provides a teletext receiver that does not require a dedicated key for making a reservation call and can make a reservation call by a simple operation.

[0007]

The present invention comprises a key operation means and a control means for controlling reception of a teletext in response to a key operation of the key operation means, and is not dedicated to a reservation call of the key operation means. When a predetermined key is pressed, a specific page of the teletext is called by the control of the control means.

[0008]

According to the present invention, the reservation call can be made by pressing a predetermined key which is not dedicated to the reservation call. Therefore, it is not necessary to provide a key for reserved call only,
In addition, it is possible to easily make a reservation call with a single key operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. This example is an example in which a teletext decoder is incorporated in a television receiver.

In the figure, the broadcast signal captured by the antenna 3 is supplied to the tuner 4. A control signal such as a tuning voltage is supplied to the tuner 4 from a microcomputer (microcomputer) 10. The channel to be selected by the tuner 4 can be designated by operating the key of the commander 11 as a remote control operating means. In this case, a remote control signal (for example, an infrared signal) designating a channel output by the key operation of the commander 11 is supplied to the microcomputer 10 via the remote control receiving unit 12, and the tuner 4 selects the designated channel. Controlled.

The tuner 4 outputs the intermediate frequency signal of the selected channel. The intermediate frequency signal is amplified by the video intermediate frequency amplifying circuit 5 and then supplied to the video detecting circuit 6, which in turn detects the video detecting circuit 6. The output video signal is supplied to the video / color processing circuit 7. The three primary color signals R, G, B of red, green, and blue output from the processing circuit 7 are transmitted through the switching circuit 8 in the television mode to the CRT (cathode ray tube) 9
Is supplied to. As a result, a television broadcast image is displayed on the screen of the CRT 9.

The video signal output from the video detection circuit 6 is a character signal processor 14 including a character signal decoder.
Is supplied to. In the teletext mode, when the teletext signal is superimposed in the vertical blanking period of the video signal, the teletext signal is separated and decoded in the processor 14, and the decoded signal is the three primary color signals R, red, green and blue.
It is output as G and B. And the teletext mode (T
In EXT mode), 3 output from the processor 14
The primary color signals R, G, B are supplied to the CRT 9 via the switching circuit 8. As a result, the content of the teletext program is displayed on the screen of the CRT 9.

The selection of the television mode or the teletext mode can be designated by a key operation of the commander 11. When the teletext mode is selected, the microcomputer 14 controls the processor 14 to operate, and the processor 14 also operates. The switching circuit 8 is switched by the switching control signal so as to select the three primary color signals R, G, B output from the processor 14.

The teletext program decoded by the processor 14 can be specified by operating the keys of the commander 11.
In this case, a remote control signal (for example, an infrared signal) designating a teletext program (program position (channel), page) output by the key operation of the commander 11 is supplied to the microcomputer 10 via the remote control receiving unit 12.
The tuner 4 and the processor 14 are controlled so that the specified teletext program content can be obtained.

Further, the microcomputer 10 has a normal ROM,
In addition to RAM (not shown), non-volatile EEPROM
The storage means 13 composed of, etc. is connected. This storage means 1
In 3, a table for reservation call is formed.

FIG. 2 shows the commander 11, and the keys show only a part necessary for explanation. 11h is a numeric keypad, 11s is a selection key group, 11r, 11g, 11y, 1
1c is 4 for FASTEXT and TOPTEXT
The color key. Where FASTEXT and TOPTEX
T is a teletext system, which is teletext broadcast in a specific area, and cannot be received outside the specific area. The four-color keys 11r, 11g, 11y, and 11c need to be operated when receiving FASTEXT or TOPTEXT, but are unnecessary in areas where FASTEXT and TOPTEXT cannot be received.

In this example, these four color keys are also used as the operation keys for the reservation call. The table formed in the storage means 13 described above shows the correspondence between the four-color keys, the program positions (channels), and the pages.

Next, the reservation setting operation for making a reservation call will be described with reference to the flowchart of FIG.

When the program of the microcomputer 10 starts, after executing the main processing routine (step ST1),
It is determined whether or not the reservation is set (step ST2). When the reservation setting is not instructed by the selection key group 11s,
After performing other processing (step ST3), step ST1
Return to.

In step ST2, when the reservation setting is instructed by the selection key group 11s, it is determined whether or not the color key is designated (step ST4). The color key can be specified by the user in 4 of 11r, 11g, 11y, 11c.
This is performed by pressing one of the color keys and then pressing a predetermined key of the selection key group 11s.

When the color key is designated in step ST4, it is determined whether or not the program position (channel) is set (step ST5). To set the program position, the user inputs the program position with ten keys 11h, and the selection key group 11
It is performed by pressing a predetermined key of s.

When the program position is set in step ST5, it is determined whether or not the page is set (step ST6). The page is set by the user inputting a page with the ten keys 11h and further pressing a predetermined key of the selection key group 11s.

When the page is set in step ST6, the program position and the page data set corresponding to the color key designated in the storage means 13 are stored (step ST7), and in step ST1. Return.

By the setting operation as described above, for example, the red key 11r is set to page 110 of the program position 2 and the green key 11g is set to 12 of the program position 5.
Program position 5 on page 1 with yellow key 11y
If page 205 of program position 7 is set to cyan key 11c for page 122 of
A table as shown in FIG.

Next, the reservation call operation will be described with reference to the flowchart of FIG.

When the program of the microcomputer 13 is started, the main processing routine is executed (step ST1
1) It is determined whether or not the color key is pressed (step S)
T12). When the color key is not pressed, other processing is performed (step ST13), and the process returns to step ST11.

At step ST12, the color keys 11r, 11
When any one of g, 11y, and 11c is pressed, the table of the storage means 13 is referred to read the data of the program position and page corresponding to the pressed color key, and the data is stored in the RAM of the microcomputer 13. Transfer and store.

Next, after the television mode is set (step S
T15), the tuner 4 is used to tune in using the program position data read from the storage means 13 in step ST12 (step ST16).

Next, after the character broadcasting mode is set (step ST17), the data of the page read from the storage means 13 in step ST12 is supplied to the character signal processor 14 to set the page (step ST18). The teletext program is received (step ST19), and the process returns to step ST11. In this case, the processor 14 outputs three primary color signals R, G, B corresponding to the program position corresponding to the pressed color key and the teletext program of the page.
Is output and supplied to the CRT 9 via the switching circuit 8, and the content of the teletext program is displayed on the screen of the CRT 9.

Thus, in this example, FASTEX
Simply set the program position and page in correspondence with the four-color keys 11r, 11g, 11y, 11c used when receiving T or TOPTEXT, and then press these four-color keys. It is possible to receive the teletext program of the program position and page corresponding to the color key, and display the content thereof on the screen of the CRT 9. According to this example, it is not necessary to provide a key dedicated to the reservation call, and it is possible to avoid the key operation surface of the commander 11 from becoming complicated. Further, the reservation call can be easily made by one key operation.

In the above embodiment, the storage means 1
3 shows a table showing the correspondence between the four-color keys, the program position (channel), and the page. As shown in FIG. 6, a table including time data is also formed. Good. As a result, it becomes possible to automatically receive the teletext program of a specific page from a specific time.

Further, as shown in FIG. 7, a table storing two or more types of page data may be formed. As a result, it becomes possible to automatically receive teletext programs on a plurality of specific pages. For example, in the example of FIG. 7, when the red key 11r is pressed, pages 108 to 112 of program position 2 can be received at fixed time intervals. It is possible to store two or more types of data on this page, and it is also possible to include the time data described above.

In the above embodiment, the four-color key 1
Although the example in which 1r, 11g, 11y, and 11c are also used as the operation keys for the reserved call is shown, the other keys can also be used in the same manner. Furthermore, in the above-described embodiment, an example in which the commander 11 is used for operation is shown, but the same can be applied to a case where a key input circuit (not shown) of the main body is used for operation.

[0034]

According to the present invention, it is possible to make a reservation call by pressing a predetermined key that is not dedicated to a reservation call. Therefore, it is not necessary to provide a dedicated key for reserved call, and it is possible to avoid complicated key operation surface,
Reservation call can be easily performed by one key operation, and there is an advantage that the operation of reservation call can be performed easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a commander.

FIG. 3 is a flowchart for explaining a reservation setting operation.

FIG. 4 is a flowchart for explaining a reservation calling operation.

FIG. 5 is a diagram showing an example of a table formed in a storage unit.

FIG. 6 is a diagram showing an example of a table formed in a storage unit.

FIG. 7 is a diagram showing an example of a table formed in a storage unit.

[Explanation of symbols]

 4 Tuner 6 Video Detection Circuit 7 Video / Color Processing Circuit 8 Switching Circuit 9 CRT (Cathode Ray Tube) 10 Microcomputer 11 Commander 13 Storage Means 14 Character Signal Processor

Claims (4)

[Claims] 1. A key operation means and a control means for controlling reception of a teletext in response to a key operation of the key operation means, and when a predetermined key which is not dedicated to reserved call of the key operation means is pressed. A teletext receiver characterized by calling a specific page of teletext by the control of the control means. 2. The teletext receiver according to claim 1, wherein the control means has a reservation setting table indicating a correspondence relationship between a predetermined key of the key operation means, a program position and a page. 3. The teletext receiver according to claim 1, wherein said control means has a reservation setting table showing a correspondence relationship between a predetermined key of said key operation means and a program position, page and time. 4. The teletext receiver according to claim 1, wherein the page is plural.