JPH0549154B2 - - Google Patents

Description

Detailed Description of the Invention "Industrial Application Field" The present invention selects and stores all programs of a predetermined genre from a large group of teletext programs using a key for each genre. This invention relates to a teletext receiver in which a target program can be selected using up and down keys for selecting a specific program number, and a target page can be displayed using page up and down keys.

``Prior art'' In general, in teletext broadcasting, the sending interval of one page is set at 20% according to operational regulations, taking into account the reading time, etc.
~30 seconds or less.

However, it would be even more desirable for the user to be able to receive and display a designated program immediately after selection, and to be able to upload or download the page of the received program.

As an example, when calculating the amount of information sent from a broadcasting station, the upper limit based on the transmission interval is 30 seconds x 60 x
8H x 24 bytes x 10 pages = 3.5M bytes, and the amount of information in actual broadcasting (TV1 channel, 4H weight) is:
500KB/98 programs/607 pages.

The above objective can be achieved by storing program data for all program numbers in all genres, but the memory capacity required to store all of this is economically difficult at current semiconductor prices. Therefore,
It is necessary to store program data with priorities from the user's perspective.

By the way, as shown in Figure 4, the program numbers for teletext broadcasting are first given by general genre program numbers, such as 1#News, 100#Weather, 200#Stocks, etc., and then, in the case of News, ,2#Morning×,3
#Every×,...99#reading×, 2# to 99# are given program numbers according to specific program contents, like news for each channel. The same applies to other genres.

In this so-called tree-structured arrangement system, for example, if you want to see the news of Yomi ×,
Conventionally, a remote control 34 as shown in FIG.
"9""9" memorized in advance using numeric keypad 35
and "#" in sequence to select. If you do not know the program number or want to know the content of the program, press "0" and "#" to display all genres on the table of contents screen, and then press "1" and "1" for the desired genre-specific program number, for example, for news. I knew the detailed program numbers of all the news programs by pressing the "#" button, and then selected the desired program by pressing "9", "9", and "#" in sequence.

"Problems to be Solved by the Invention" In the conventional method of individually selecting a desired program using the numeric keypad 35 of the remote control 34, for example,
Even if the news is in the same genre, if you try to view another news item, you have to specify that news item and import it, so it takes a long time to import it and display it on the screen. Also, when you import a program, the pages are sent sequentially while importing, so you can view the original page,
When I tried to fast forward to the next page, I had a problem where I couldn't bring the page up or down.

The first object of the present invention is to use a so-called tree structure arrangement method in which program numbers are first classified by genre and then classified by program content. What you see is what you get.

A second object of the present invention is to provide a system that allows the page of the program being displayed to be brought up and down.

"Means for Solving the Problems" The present invention has been made to solve the above-mentioned problems, and first, a plurality of teletext program groups are divided into genres and assigned program numbers for each genre. Furthermore, in an array type teletext system in which a program number according to specific number content is attached to each genre, a program number selection key 36 for each genre and an up/down key 37 for selecting a program number according to program content are provided. The page for the selected specific program will be displayed.
A remote control 30 equipped with a down key 38, a program data storage RAM 15 capable of storing all program data of the selected genre, an up/down key 37 for selecting program numbers by program content, and a selected specific button. Program page up/down key 3
8, the teletext receiver is equipped with an image processing MPU 9 for sequentially reading data of a predetermined page of a predetermined program from a program data storage RAM 15 and displaying the data by operating the teletext receiver 8. .

"Operation" When the user operates the desired genre key 36 using the remote control 30, the corresponding program number data is input to the image processing MPU 9. The image processing MPU 9 stores all program data of the selected genre in the program data storage RAM 15. After that, in the stored genre, select the program number selection for each program content on the remote control 30.
Down key 37 and page up/down key 3
8, the desired page of the desired program number can be immediately selected and displayed, and the user can also immediately turn to the original page or the next page.

“Example” An example of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a TV video signal input terminal, and a synchronizing signal generation circuit 3 and a data clock generation circuit 4 are supplied to this video signal input terminal 1 via a waveform equalization circuit 2. for,
An error correction circuit 6 is connected via an interface 5, and further connected to a packet buffer 7 of about 2K bytes for temporarily storing teletext data, and also to a bus buffer 8.

9 is an MPU for image processing;
The MPU 9 includes a program ROM 11 that stores a teletext program via the bus line 10;
A program number data storage RAM 12 that stores a certain number of program number data, a nonvolatile RAM 13 that retains program number data in the program number data storage RAM 12 when the power is turned off, a bank switching refresh control circuit 14, and all of at least one genre. RAM 15 for storing program data, CGROM 16, printer interface 17, and MPU 1 for melody processing, each having a capacity sufficient to store program data.
8, CRTC 19 and system control MPU 20, respectively.

An interrupt circuit 21 is also coupled to the image processing MPU 9, a printer 22 as an external device is coupled to the printer interface 17,
A buffer data RAM 23 and an FM sound source circuit 24 are coupled to the melody processing MPU 18,
This FM sound source circuit 24 is coupled to a TV interface 25.

A V-RAM 26 is coupled to the CRTC 19, and the TV interface 25 and
An RGB encoder 27 is coupled, and the TV interface 25 and RGB encoder 27 are coupled to TV connection terminals 28 and 29.

The system control MPU 20 is coupled to a light receiving section 31 of a remote controller 30, and is also connected to a system reset output terminal 32 and a power on/off terminal 33. As shown in FIG. 2, the remote control 30 has a program number selection key 36 by genre, an up/down key 37 for selecting a program number by program content, and an up/down key 38 for the page of the selected specific program. In addition, a conventional numeric keypad 35 may be provided if necessary.

The operation of the circuit configuration as described above will be explained.

When the desired genre-specific program number selection key 36 is selected using the remote controller 30, program number data is sent to the image processing MPU 9 via the light receiving section 31 and the system control MPU 20. Data and data are input from the video signal input from video signal input terminal 1.
The character signal data extracted by the clock generation circuit 4 is temporarily stored in a packet buffer 7, and from this packet buffer 7, all program data of the program number of the genre corresponding to each field is stored in the program data storage RAM 15. be done.

Once the program data is stored in RAM 1 for program data storage.
5, the designated program is immediately received and displayed by operating the up/down key 37 for selecting a program number by program content. Furthermore, the page up/down key 38 allows the page of the selected specific program to be advanced or returned to the original page, so-called program page up/down.

Note that the program data is stored in RAM 1 for program data storage.
5, a method can be used such as assigning a fixed address to each program number, checking the EOT code etc. and arranging them immediately, or storing the entire memory area in a ring shape.

``Effects of the Invention'' (1) Program numbers are first classified by genre and then classified by program content. When you operate the genre-specific program number selection key, the program contents of all channels belonging to the same genre are displayed in one operation.
It can be stored in the program data storage RAM 15 for each program content.

(2) Since all program data of a specific genre is stored in the program data storage RAM 15, if the program is in the same genre, the specified program can be immediately selected using the up/down keys 37 for selecting program numbers by program content. Not only can the program be received and displayed, but also the page of the specific program selected by the page up/down keys 38 can be displayed immediately.

(3) Since only a specific genre is stored, the memory capacity of the program data storage RAM 15 does not need to be large, and the cost does not increase.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a teletext receiver according to the present invention, FIG. 2 is a front view of a remote control of the device according to the present invention, FIG. 3 is a front view of a conventional remote control, and FIG. 4 is a program FIG. 3 is an explanatory diagram of a group arrangement. 1... Teletext video signal input terminal, 7... Packet buffer, 9... MPU for image processing, 11...
...Program ROM, 12...RAM for storing program number data, 15...RAM for storing program data,
20...System control MPU, 30...Remote control,
31...Light receiving section, 35...Numeric keypad, 36...Program number selection key by genre, 37...Up/down key for selecting program number by program content, 38...Page up/down key.

Claims (1)

[Claims] 1. In an arrangement-based teletext system in which a plurality of teletext program groups are first classified into genres and assigned program numbers for each genre, and then assigned program numbers for specific program content for each genre, A program number selection key 36 by genre, an up/down key 37 for selecting a program number by program content, and an up/down key 38 for the page of the selected specific program.
and a program data storage device capable of storing all program data of the selected genre.
Data of a predetermined page of a predetermined program is sequentially stored as program data by operating the RAM 15, the up/down key 37 for selecting the program number by program content, and the up/down key 38 for the page of the selected specific program. A teletext receiver comprising: an image processing MPU 9 for reading data from a RAM 15 and performing display processing.