JPH055746Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a teletext receiver that is used by being externally connected to a television receiver or incorporated into the television receiver.

Conventional technology and its problems Conventional teletext broadcasting receivers basically only function as decoders that directly encode (decode) the extracted teletext broadcasting data, and they do not have the functions necessary for users. It was not possible to extract and edit information or accumulate data. Some models are equipped with an RS-232C output interface and can extract, edit, and store information by connecting to a personal computer, but these systems are expensive and have poor operability. There was a problem.

Therefore, the object of this invention is to use an exchangeable memory card with built-in memory, such as an IC card, rather than an expensive data processing device such as a personal computer, so that desired specific teletext data can be extracted from the teletext data stored in the main unit, and after editing and image processing, the processed data can be displayed on the screen at any time.

Means for Solving the Problems Therefore, the teletext receiver according to this invention includes a teletext data extraction unit that extracts and stores the teletext signal as teletext data from a television signal including the teletext signal. 11, an operation section 15, which stores a main body program, decodes the teletext data stored in the teletext data extraction section 11 according to the main body program, and performs teletext broadcasting on the program selected by the operation section 15. The main body program section 13 and the card program section 14 that constitute the display screen data of the screen, and the teletext data that can be removably loaded into the card program section 14 and stored in the teletext data extraction section 11. Specific teletext data can be extracted and decoded, the decoded data can be edited and stored according to the operation mode selected by the operation unit 15, and the processed data can be image-processed as display screen data. It is checked whether the memory card 25 is loaded in the card program section 14 and the memory card 25 is loaded in the main body program section 13 and the card program section 14 according to a switch on the operation section 15. a system control unit 12 that effectively operates one of the system control units 12;
The present invention is characterized by comprising a screen display control section 16 that converts display screen data transferred from the main body program section 13 or the card program section 14, which is effectively operated in the TV receiver 17, into a video signal for the television receiver 17. .

According to this invention, the operation according to the main body program and the operation according to the card program stored in the memory card can be arbitrarily selected using the operation section.
Not only can teletext data be extracted and displayed according to the main unit program as before, but by using a replaceable memory card, information can be extracted and displayed according to the contents of the program pre-stored in the memory. Editing, storage, and image processing are possible, and the mode of extraction, editing, storage, and image processing can be selected using the operation unit.

Embodiment Next, an embodiment of this invention will be described in detail with reference to the drawings.

The teletext receiver according to this invention includes a high frequency processing section 10, a teletext data extraction section 11, a system control section 12, a main body program section 13, a replaceable card program section 14, an operation section 15, and a screen display control section 16. They are broadly classified into two types, and are used by being externally connected to the television receiver 17 or incorporated into the television receiver 17.

The television signal received by the television antenna 18 is demodulated into a video signal by the tuner circuit 19 of the high frequency processing section 10, and then input to the data extraction circuit 20 of the teletext data extraction section 11. A character signal is extracted from the video signal, and this character signal is further digitized and output from the data extraction circuit 20 as teletext data. Then, the teletext data is error-corrected by the error correction circuit 20 and then stored in the buffer memory 21.

The operation section 15 has a change-over switch and an operation circuit 23, and by manually operating the switch, either the main body program section 13 or the card program section 14 can be made to operate effectively.

The system control section 12 has a system control circuit 24, which checks whether a memory card 25 such as an IC card is loaded in the card program section 14, and also controls the main body program section 13 and the card program section 14 according to a switch on the operation section 15.
Either one of them is activated.

The main body program section 13 is built into the main body of the teletext broadcasting receiver, and has a ROM 26 and a RAM 27 that store a main body program for controlling the main body. This main body program section 1
3 operates, teletext data is retrieved from the buffer memory 22 by its main program. Then, the main program decodes the teletext data based on the teletext encoding system, forms display screen data of the teletext screen of the program selected by the operation unit 15, and transfers it to the screen display control unit 16.

The memory card 25 is a ROM 2 that stores a card program different from the main body program.
8 and RAM29. When the memory card 25 is loaded and the card program unit 14 operates, specific teletext data is taken out of the buffer memory 22 by the card program of the memory card 25 and decoded based on the teletext encoding system. And the card program is
The decoded teletext data is extracted, edited, calculated, and stored in accordance with the operation mode selected on the operation unit 15, and the processed data is used to configure display screen data and display it on the screen. Transfer to the control unit 16.

The screen display control section 16 has a display control section 30 and a color encoder 31, and converts the display screen data transferred from the main body program section 13 or the card program section 14 into a video signal as described above. The video signal is transmitted to the RF of the high frequency processing section 10.
After being modulated into an RF signal by the modulator 32, it is output to the television receiver 17 and displayed on the screen.

Effects of the invention According to this invention, the following effects are expected.

A: In addition to being able to receive regular teletext programs, by preparing various types of information extraction memory cards, you can arbitrarily extract specific information, perform editing processing, and image processing. Since it can be stored on a memory card, the following usage patterns can be considered, for example.

When using a memory card for extracting information from a stock teletext program, users can select only the desired stocks from a large number of stocks, and collect stock price data such as opening price, high price, low price, closing price, current price, and change from the previous day. Can be displayed. In addition, by accumulating the data, it is possible to display historical data, daily data, weekly data, etc.

When teletext programs such as employment information, housing information, and used car information are provided, by using a memory card that supports them, only the information that the user desires or that meets the conditions can be selectively displayed.

B. It is possible to reduce the cost of the system.

[Brief explanation of the drawing]

The drawing is a block diagram of a teletext receiver that is an embodiment of this invention. 10...High frequency control section, 11...Teletext broadcasting data extraction section, 12...System control section, 13
... Main body program section, 14 ... Card program control section, 15 ... Operation section, 16 ... Screen display control section, 17 ... Television receiver, 22 ... Buffer memory, 23 ... Changeover switch and operation circuit, 25...Memory card.

Claims (1)

[Scope of utility model registration request] A teletext data extraction section 11 extracts and stores the teletext signal as teletext data from a television signal including the teletext signal, an operation section 15 stores a main body program, and extracts and stores the teletext signal as teletext data. a main body program section 13 that decodes the teletext data stored in the sampling section 11 according to the main body program and configures display screen data of a teletext screen for the program selected by the operation section 15; and a card program section 14. , can be removably loaded into the card program section 14, and the teletext data extracting section 1
Extracting and decoding specific teletext data from the teletext data stored in 1, editing the decoded data according to the operation mode selected by the operation section 15, and storing the data. , checks whether or not the memory card 25 is loaded into the card program section 14 and which can perform image processing on the processed data as display screen data; A system control unit 12 that effectively operates either the main body program unit 13 or the card program unit 14, and a display transferred from the main body program unit 13 or the card program unit 14 that is effectively operated by the system control unit 12. 1. A teletext broadcasting receiver comprising a screen display control section 16 that converts screen data into a video signal for a television receiver 17.