JPH0568012A - Teletext service system - Google Patents

Abstract

PURPOSE:To obtain a teletext information system in which the immediacy, selectivity and storage capability are simultaneously satisfied. CONSTITUTION:A radio base station 1 broadcasts an exclusive radio wave for sending only teletext information. The reception section 3 of a terminal equipment 2 receives and demodulates the exclusive radio wave. A storage section 4 stores the teletext information. An operation section 5 is used in order to select and designate specific teletext information in at least one set of the teletext information stored in the storage section 4. A display section 6 is used to display the teletext information. A data processing section 7 extracts the teletext information from the signal demodulated by the reception section 3, stores it to the storage section 4 and the stored teletext information is read based on the designation of the operation section 5 and displayed on the display section 6.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a conventional teletext service system, there is a teletext service for television. This is a system that broadcasts character information by utilizing the gap between scanning lines of television radio waves, and provides various information such as news, traffic information, weather forecasts, stock information, and so on.

[0003]

In the conventional teletext service system, the teletext receiver requires a complicated and large-scale circuit for extracting the text information inserted in the scanning line of the television broadcast. Yes, it is difficult to reduce the size and cost. Further, as a system problem, since the gap of the radio wave for television broadcasting is originally used, it is disadvantageous in transmission. That is, it is necessary to completely receive image information having a vast band of 6 MHz in order to receive a small amount of character information, and there is a question of feasibility as a mobile terminal.

[0004]

A teletext broadcasting service system of the present invention comprises a radio base station for broadcasting a dedicated radio wave for transmitting only textual information, and a receiving section for receiving and demodulating the dedicated radio wave. A storage unit for storing the character information, and an operation unit for selectively designating specific character information from at least one character information stored in the storage unit,
A display unit for displaying the character information, and character information is extracted from the signal demodulated by the receiving unit and stored in the storage unit, and then the stored character information is read out based on the designation of the operation unit. And a portable terminal having a data processing section to be displayed on the section.

[0005]

The present invention will be described below with reference to the drawings.

FIG. 1A is a diagram for explaining the concept of the present invention, and FIG. 1B is a block diagram of a terminal of an embodiment of the present invention.

FIG. 1A shows an example in which the wireless base station 1 constantly broadcasts character information to the portable terminal 2. The wireless base station 1 broadcasts a dedicated radio wave for transmitting only character information.

In FIG. 1 (b), the terminal 2 includes a receiving section 3 for receiving and demodulating a dedicated radio wave broadcast by a radio base station,
A storage unit 4 for storing the broadcast character information, an operation unit 5 for selecting and designating specific character information from at least one of the character information stored in the storage unit 4, and for displaying the character information. The display unit 6 and the data processing unit 7 for reading the stored character information based on the designation of the post-operation unit 5 stored in the storage unit 4 and displaying the read character information on the display unit 6.

FIG. 2 shows an example of a display screen of the terminal. The terminal can display 16 double-byte Kanji characters and 6 lines. Here, the traffic jam,
It shows a display example of traffic information such as accidents and road closures.

In this system, like a television or radio, the terminal receives only and does not transmit. The terminal is about the size of an electronic notebook, and the user of the terminal carries it around to constantly receive the character information broadcast from the base station and stores it in the storage unit 4. Therefore, the user of the terminal can display the stored information on the display unit 6 of the LCD at any time by viewing the menu screen and selectively designating desired information.

Regarding the data transmission rate, since the stored information is used later, it is sufficiently practical even at a relatively low speed. Transmission rate NRZ (Non-R
When sending information for 10 manuscript sheets of 400 characters at 300 bps (turn to Zero) conversion,
Since the amount of information is 16000 bytes with 4 bytes per full-width character, it can be transmitted in about 2 minutes even if the transmission efficiency is 50%.

[0012]

As described above, according to the present invention, the storability, the immediacy, and the selectivity of information can be obtained at the same time, and only necessary information is transmitted. Since the terminal can be transmitted in a short time and the terminal is portable, necessary information can be obtained anywhere, and since the terminal has a simpler configuration than a teletext receiver, downsizing and cost reduction are possible.

[Brief description of drawings]

FIG. 1A is a diagram for explaining the concept of the present invention. (B) is a block diagram of the terminal of one Example of this invention.

FIG. 2 is a diagram showing a display example of traffic information on a terminal according to an embodiment of the present invention.

[Explanation of symbols]

 1 wireless base station 2 terminal 3 receiving unit 4 storage unit 5 operation unit 6 display unit 7 data processing unit

Claims (1)

[Claims] 1. A radio base station that broadcasts a dedicated radio wave for transmitting only character information, a reception unit that receives and demodulates the dedicated radio wave, and a storage unit that stores the character information. From the signal demodulated by the receiving unit, the operation unit for selecting and designating specific character information from at least one character information stored in the storage unit, the display unit for displaying the character information, A portable terminal having a data processing unit for taking out the character information, storing it in the storage unit, and reading the stored character information based on the designation of the operation unit and displaying it on the display unit. Teletext service system.