JPH0638539Y2 - Teletext receiver - Google Patents

Description

TECHNICAL FIELD The present invention relates to a teletext receiver used by being externally connected to or incorporated in a television receiver.

2. Description of the Related Art Conventionally, as described in Japanese Patent Laid-Open No. 62-108685, an IC card interface unit is provided, and an IC card is detachably connected to the IC card interface unit to select from among television signals. This extracted teletext data is
A character multiplex broadcasting receiver that can be written to and read from an IC card at any time has already been proposed.

Problems to be solved by the invention By the way, for IC cards with a built-in battery, in order to detect the consumption of the battery, whether the battery check circuit built in the card itself uses an LED and a test switch to check manually. , Or there is no check function at all. Therefore, not only those that do not have a function to check the battery consumption level, but even those with a battery consumption level do not know the battery consumption level unless you check manually each time In the multiplex broadcast receiver, there is a possibility that the stored teletext data etc. may be lost without knowing.

An object of the present invention is to provide a character multiplex broadcasting receiver capable of automatically checking and displaying the battery consumption of an IC card.

Means for Solving the Problems A teletext receiver according to the present invention comprises a teletext broadcasting data extracting section (11) for extracting and storing the teletext signal as teletext data from a television signal containing the teletext signal. , A system control unit (12) for extracting specific data from the stored teletext data, and a screen display control unit (17) for displaying the extracted data on the screen of the television receiver (21). ) And a character multiplex broadcasting receiver having a card program section (14) capable of loading / reading a memory card in a replaceable manner, and the battery consumption in the memory card loaded therein are checked. A card battery check unit (15) is provided, and the screen display control unit (17) displays the check result of the card battery check unit (15) on the television receiver (21). A display means for displaying on the screen is provided.

Action When the remaining amount of the battery in the memory card loaded in the card program section (14) becomes low, the fact is automatically displayed on the screen of the television receiver (21).

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

The teletext receiver according to the present invention is provided with a high frequency control unit (1
0), a character multiplex broadcast data extracting section (11), a system control section (12), a main body program section (13), and a card program section (14) in which a memory card (IC card) is detachably loaded. , A card battery check circuit (15), an operation unit (16), and a screen display control unit (17).

The high frequency control section (10) demodulates the television signal received by the television antenna (18) into a video signal by the tuner circuit (19), while the video signal from the screen control section (17) is RF modulator (20). ) Converts it into an RF signal and outputs it to the television receiver (21).

The character multiplex broadcast data sampling section (11) includes a data sampling circuit (22), an error correction / error information detection circuit (23), and a buffer memory (24). The video signal output from the tuner circuit (18) has a character signal extracted by a data extraction circuit (22), and the extracted character signal is converted into digitized teletext data.
This teletext data is input to an error correction / error information detection circuit (23) for error correction, and the error information is detected. The error-corrected teletext data is stored in the buffer memory (24), and the detected error information is transferred to the system controller (12).

The operation section (16) includes a changeover switch and an operation circuit (25).
Have. The system control unit (12) has a system control circuit (26) including a CPU, checks whether a memory card is loaded in the card program unit (14), and manually operates the switch of the operation unit (16). Accordingly, any one of the main body program section (13) and the card program section (14) is effectively operated.

The main body program section (13) is incorporated in the main body of the teletext broadcasting receiver, and has a ROM and a RAM (28) for storing a main body program for controlling the main body. When the main body program section (13) operates effectively, teletext data is taken out from the buffer memory (24) by the main body program. Then, the main body program decodes the teletext data based on the code system of the teletext, configures the display screen data of the teletext screen of the program selected by the operation unit (16), and the screen display control unit (17). Transfer to.

The card program section (14) can be detachably loaded with a memory card (IC card) with a built-in battery, and programs and data can be read and written between this memory card and the teletext receiver body. it can. The memory card has a ROM (29) for storing a card program other than the above main program, and a RAM (30) for storing the data extracted from the teletext receiver main body according to the card program. And a built-in battery.

When the card program section (14) operates, the system control section (12) takes out only the specific teletext data according to the card program from the buffer memory (24) and decodes it based on the coding system. Then, the decoded teletext data is subjected to processing such as extraction / editing / calculation / accumulation according to the card program and according to the operation mode selected by the operation unit (16). That is, the decoded specific teletext data is subjected to a specific processing process that cannot be performed by the main body program, then display screen data is constructed from the processed data and transferred to the screen display control section (17).

The card battery check circuit (15) judges the consumption level of the memory card by detecting the output voltage of the battery built in the memory card when the memory card is loaded in the card program section (14). , And transfers the result to the system control unit (12). The system controller (12)
If it is determined that the memory card battery is exhausted from the above judgment result transferred from the card battery check circuit (15), configure specific screen data for prompting battery replacement, and control it for screen display control. Transfer to department (17).

The screen display control section (17) has a display control circuit (31) and a color encoder (32), and the display screen transferred from the main body program section (13) or the card program section (14) as described above. Data or system control unit (1
2) Convert the screen data for the battery replacement reminder sent from to the video signal. The video signal is converted into an RF signal by the RF modulator (20) of the high frequency control unit (10), and then output to the television receiver (21) for screen display.

Therefore, when a memory card is used, when only the specific teletext data is processed and displayed on the screen according to the card program stored in it, and when the internal battery of the memory card is low , That warning is displayed on the same screen.

Effect of the Invention According to the present invention, in a character multiplex broadcasting receiver that uses a memory card such as an IC card with a built-in battery, the battery level in the memory card is automatically checked to reduce the remaining amount. When it happens, a message prompting you to replace it can be automatically displayed on the screen of the television receiver, so the user does not have to worry about when to replace the battery,
If you forget to replace it and cause a memory card malfunction,
It is possible to prevent the data stored in it from being lost.

[Brief description of drawings]

FIG. 1 is a block diagram of an example of a teletext receiver according to the present invention. (11) …… Character multiplex broadcast data sampling section (12) …… System control section (13) …… Main body program section (14) …… Card program section (15) …… Card battery check circuit (17) …… Screen Display control unit (21) …… Television receiver

Claims (1)

[Scope of utility model registration request] 1. A character multiplex broadcast data extracting section for extracting and storing the character multiplex signal as character broadcast data from a television signal containing the character multiplex signal, and specific data from the stored character broadcast data. In a character multiplex broadcasting receiver having a system control unit for extracting and a screen display control unit for displaying the extracted data on a screen of a television receiver, a memory card is exchangeably mounted and its reading / writing is performed. And a card battery check unit for checking the degree of battery consumption in a memory card loaded in the card program unit, and the screen display control unit displays the check result of the card battery check unit on the TV. A character multiplex broadcasting receiver, characterized in that display means for displaying on the screen of the John receiver is provided.