JPH04281686A - Teletext receiver - Google Patents

Abstract

PURPOSE:To automate page turn-over and page feeding operation by allowing the operator to have only to select a teletext number by providing the subject receiver with a means registering the propriety of page turn-over and page feeding operation at the start of offer. CONSTITUTION:A microcomputer 5 in a teletext receiver transfers a program data succeding to a program data number to an offer program memory 10 when the program data number coincident with a designated program designation data by a keyboard 6 is found among data stored in a buffer memory 4 and transfers the data to a display picture memory 8 in the unit of pages. Moreover, an offer memory 11 designated an offer start page and whethet or not succeeding page feeding is implemented manually or automatically is connected to the microcomputer 5 and the designation information is registered by the keyboard 6. Thus, the teletext broardcast is enjoyed with out a troublesome operation by registering the initial offer page and the page feeding method in advance.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiving device, and more particularly to a teletext receiving device that improves the operability of specifying a page for a teletext program.

0003

2. Description of the Related Art Teletext broadcasting is a system in which various types of programs are repeatedly transmitted in the form of digital signals during a specific horizontal scanning period in the vertical retrace period of a television signal. On the receiving side, all the transmitted signals are extracted by a signal extraction operation and temporarily stored in a buffer memory. Then, when the recipient specifies an appropriate program from among the plurality of stored programs, only the specified program is read out from the buffer memory and written into the presentation memory. The program data stored in the presentation memory is
Through the presentation process, the display data is displayed on the screen, and the additional sound data is output as music.

By the way, in recent years, as the capacity of memory has increased, the storage capacity of the buffer memory has also increased, making it possible to store each teletext program over a plurality of pages. Then, when the recipient specifies an appropriate program from among these programs, a plurality of pages can be presented. However, in order to present an appropriate page from among the stored pages,
The corresponding page is presented by specifying or turning the page, and the page specifying operation is cumbersome as the page specifying operation must be performed each time a program is selected.

[0005]

[Problems to be Solved by the Invention] As described above, in the conventional teletext receiving device, in order to specify the page that the receiver wants to see first when selecting a program, the user must select the program number and then specify the page. operation was required.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned problem, and to provide a teletext receiving apparatus that can eliminate the complexity of page designation operations for text programs.

[Configuration of the invention]

[0008]

[Means for Solving the Problems] The present invention extracts a plurality of teletext program data inserted into the vertical retrace period of a television signal, stores them in a buffer memory that stores all the programs, and specifies the program number. By doing so, only the specified program data is read from the program data stored in the buffer memory, and stored in the presentation program memory, and the program data stored in the presentation program memory is transferred page by page to the image memory. In a teletext receiving device that transmits and presents a teletext broadcast, the first registration means registers in advance whether or not to specify a page to be presented at the start of a specified program, and the system automatically switches pages after the page from which presentation has started. A second registration means registers in advance whether or not to forward the program, and the setting contents of the first and second registration means are checked at the start of program presentation, and the content is stored in the presentation program memory according to the registration state. and means for searching and presenting stored page data.

[0009]

[Operation] In the present invention, by registering the page at the start of presentation and registering page forwarding as automatic forwarding, from then on, just by selecting the program number, the data of the desired page number will be presented. The next page is automatically presented at regular intervals, allowing you to enjoy teletext without any complicated operations.

0010

[Example] An example will be described with reference to the drawings. FIG. 1 is a block diagram showing a teletext receiving apparatus according to an embodiment of the present invention.

In FIG. 1, an input terminal 1 is supplied with a demodulated video signal. Teletext data is superimposed on this video signal during a specific horizontal scanning period. The video signal is sliced at a predetermined slice level in the waveform shaping circuit 2 to become a digital binary signal. This digital binary signal is supplied to the data acquisition circuit 3.

The data acquisition circuit 3 extracts the digital binary signal as teletext data for each data line and supplies it to the buffer memory 4 . Buffer memory 4 temporarily stores data from data acquisition circuit 3. Timing control of data line extraction in the data acquisition circuit 3 and data transfer from the data acquisition circuit 3 to the buffer memory 4 are performed by the microcomputer 5.

A keyboard 6 is connected to the microcomputer 5. The keyboard 6 includes keys for specifying program numbers using a numeric keypad or the like. When the microcomputer 5 finds program number data that matches the program designation data from the keyboard 6 in the data stored in the buffer memory 4, it transfers all subsequent program data of multiple configurations to the presentation program memory 10. The corresponding program data received thereafter is stored in this presentation program memory 10. The program data stored in the presentation program memory 10 is transferred page by page to the display image memory 8 via the display control circuit 7. The display control circuit 7 reads the data written in the image memory 8 and outputs it to the output terminal 9, thereby presenting the designated program. Furthermore, the microcomputer 5 is connected to a presentation registration memory 11 for specifying the presentation start page and whether the page turning operation after the start page is manual or automatic. This registration setting in the presentation registration memory 11 is performed by operating the keyboard 6.

[0014] When the receiver makes registration settings in the presentation registration memory 11 regarding the start page and page forwarding of the presentation program, the recipient does so in accordance with the registration setting screen shown in FIG. In Figure 2 (
1) is a registration that specifies the presentation start page; (a)
First page. (b) No page specified. (c) Page specification. Specify one of them using the keyboard 6. In Figure 2, (a
) is set.

(2) in FIG. 2 specifies the page forwarding operation after the start page in (1). (a) Manual forwarding. (b) Automatic feed. Specify one of them by operating the keyboard 6. By making the registration settings as described above, the microcomputer 5 can, when selecting a presentation program,
The registration state shown in FIG. 2(1) is checked, and if "(a) First page.", the first page (the page with the lowest number) stored in the presentation program memory 10 is searched and presented. In the case of "(b) No page specified.", the latest received page stored in the presentation program memory 10 is searched and presented. In the case of "(c) Page specification.", see Figure 2 (1) (c)
The specified page (page 02 in FIG. 2) registered in the page number setting column of the item is searched and presented. However, if the specified page is not stored in the presentation program memory 10,
Wait until the specified page is received and present it.

Next, when the presentation of the start page is completed, the registration status shown in FIG. 2 (2) is confirmed, and the "(a) Manual feed"
In this case, the next page is presented by a page turn operation using the keyboard 6. In the case of "(b) automatic forwarding", after the start page is displayed for a certain period of time, data for the next page is retrieved from the presentation program memory 10 and presented. Furthermore, after displaying for a certain period of time, the operation of automatically proceeding to the next page is repeated. Note that when proceeding to the next page, after the final page is presented, the first page is returned and presented.

FIG. 3 shows how program data is retrieved from the buffer memory 4 to the presentation program memory 10 when program number 0/010# is selected and specified by the receiver at the time of reception (A) in the buffer memory 4. FIG. 3 is a diagram showing a state of transfer.

In FIG. 3, 0/010*01,0/0
10*02, 0/010*03, ......... each page data of program number 0/010 (01, 02, 03, ...
...indicates a page number) and are stored in the buffer memory 4 in the order received. Note that page data of a program number different from 0/010 is stored in a blank portion of the buffer memory 4. When the receiver specifies the program number 0/010# on the keyboard 6, the data of each page of this program (0/010*01, 0/010*02, 0/0
10*03, . . . ) are successively stored in the presentation program memory 10 in the order in which each page is received. In addition,
After the data transfer to the presentation program memory 10 is completed, the page data (0/0
10*01,0/010*02,0/010*03,...
......) is continuously stored in the presentation program memory 10.

[0019]

[Effects of the Invention] As described above, according to the present invention, by registering in advance the settings for the first presentation page after program selection and subsequent page turning operations, whether manual or automatic, subsequent page turning operations are automatically performed. In the case of manual page turning, the next page can be presented according to the recipient's page turning operations, and in the case of automatic page turning, the next page is automatically displayed at a fixed interval without the need for page turning operations. can be presented.

[Brief explanation of the drawing]

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

FIG. 2 is an explanatory diagram showing an example of a screen display of a presentation program setting table in the apparatus of FIG. 1;

FIG. 3 is an explanatory diagram showing the operation of transferring program data when selecting a presentation program in the apparatus of FIG. 1;

[Explanation of symbols]

3...Data acquisition circuit 4...Buffer memory 5...Microcomputer 6...Keyboard 8... Image memory 9...Display data output terminal 10...Program memory for presentation 11...Memory for presentation registration

Claims (1)

[Claims] Claim 1: A plurality of teletext program data inserted into a vertical retrace period of a television signal are extracted, stored in a buffer memory that stores all the programs, and stored in the buffer memory by specifying a program number. Teletext broadcasting in which only specified program data is read out from among the program data stored, stored in a presentation program memory, and the program data stored in the presentation program memory is transferred page by page to an image memory for presentation. In the receiving device, a first registration means for registering in advance whether or not to specify a page to be presented at the start of a specified program, and a first registration means for registering in advance whether or not to specify a page to be presented at the start of a specified program, and a first registration means for registering in advance whether or not to specify a page to be presented at the start of a specified program, and to specify in advance whether or not to perform automatic page forwarding after the page whose presentation has started. The second registration means to be registered and the setting contents of the first and second registration means are checked at the time of starting program presentation, and the page data stored in the presentation program memory is checked according to the registration state. What is claimed is: 1. A teletext receiving device characterized by comprising means for searching and presenting.