JPS62179236A - Radio information display system - Google Patents

Abstract

PURPOSE:To simplify the work at the installation and to facilitate the layout change by using a radio for the transmission system to display message information onto a remote display panel. CONSTITUTION:Message information is inputted from an operation section 8 and input information is displayed on a display section 7 of an encoder via a control section 3. Thus, the transmission is attained while confirming that no error exists in the input information. The control section 3 decodes the message and sends it to the display section 7, converts it into a signal format and sends the result to a modulation section 4. The message signal fed to the modulation section 4 modulates a sub carrier, a transmission section 5 uses the modulated sub carrier to modulate a main carrier and the result is sent from an antenna 6 as a radio wave.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is applicable to messages such as alphanumeric characters, kana characters, kanji characters, graphics, etc. Regarding the system.

(Prior Art) As a transmission method for displaying the message information on a distant display panel, a wired transmission method has conventionally been used.

(Problems to be Solved by the Invention) Therefore, when this display system is provided, installation work for a transmission path is required, and furthermore, there is a drawback that it is troublesome to change the design later.

An object of the present invention is to solve all of the above-mentioned drawbacks, and to provide a wireless information display system that does not require installation of transmission lines and whose design can be easily changed.

(Means for solving the problem) In order to achieve the above object, the wireless information display system according to the present invention is an information display system that displays message information in alphanumeric characters, kana characters, kanji characters, graphics, etc. on a distant display panel. , an encoder that attaches a code for error control etc. to the message information input from the operation unit, modulates the radio carrier wave and transmits it, and an encoder that receives and demodulates all the radio carrier waves and performs error control. The message information is decoded and extracted, and the alphanumeric, kana, kanji,
It consists of a display panel that displays messages such as graphics.

(Example) The present invention will be described in more detail below with reference to one drawing and the like. FIG. 1 is a system diagram of an embodiment of the wireless information display system according to the present invention.

The message input to the encoder 1 is transmitted entirely wirelessly, and the wireless display board 2 receives it and displays, for example, a message such as ``It's sunny today'' as shown in the figure.

FIG. 2 is a block diagram showing details of the encoder 1.

Message information is input to the operation section 2, and the input information is displayed on the display section 7 of the encoder via the control section 3. This allows you to confirm that there are no errors in the input information before sending it.

Therefore, the control section 3 decodes the message and sends it to the display section 7, converts it into a signal format described later, and sends it to the modulation section 4.
send to

The message signal supplied to the modulator 4 is modulated on a subcarrier, and this modulated subcarrier is further modulated on the main carrier by the transmitter 5 and emitted from the antenna 6 as a radio wave.

FIG. 3 is a block diagram showing details of the wireless information display panel.

The radio wave transmitted by the encoder 1 and modulated with the nine message signal is received by the antenna 9 and enters the receiving section 1u as a main carrier wave. The main carrier wave is demodulated by the receiving section 10 to become a subcarrier wave, which is further demodulated by the demodulating section 11 and converted into logical data in a signal format to be described later, and this logical data is supplied to the control section 12.

The control section 12 converts the logical data into dot data for all display based on pattern information such as characters from the character generator 15, and passes this to the all display control section 13.

The display unit 14 is a 16×16 dot display, which is controlled by the display control unit 5 and displays characters, drawings, etc.

FIG. 4 is a diagram showing an example of the signal format of a message signal transmitted to the display panel.

In FIG. 4, bit synchronization 16 is a signal for synchronizing the demodulator, and frame synchronization 17 is a signal for synchronizing the demodulator.
This bit indicates that the necessary information follows after this bit.

Address 18 is a number assigned to each wireless information display panel, and is used to individually control the display.

Command 19 is used to control the display format, such as deafness, and instructs, for example, fixed display, fluid display, etc.

Data 20 is the display content itself, for example, kanji? If it is to be displayed, the character address specified in %J I 8 C, 6226 corresponds to this.

The error correction code is a code for self-correction, for example, Hot-
1 code is used.

Although one embodiment has been described above, various modifications can be made. For example, the display panel may have a display other than 16x16 dots, such as a 24x24 dot display.

(Effects of the Invention) As described in detail above, since the present invention is a wireless information display system, the installation work is simple and the layout can be easily changed.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the system according to the invention, FIGS.
The figures are block diagrams showing an embodiment of the wireless information display system according to the present invention, with FIG. 2 showing an encoder assembly and FIG. 3 showing a wireless information display panel. The fourth diagram is a diagram showing an example of a signal format. 1...Encoder 2...Wireless information display panel 3...
・Control unit 4...Modulation unit 5...Transmission unit
6...Antenna 7...Display section 8...Operation section 9...Antenna 10...Receiving section 11...
Demodulation section 12...Control section 13...Display control section 14...Display section 15...Character generator Patent applicant NEC Co., Ltd. agent Patent attorney Noro Ino Talent 1 figure 2 figure

Claims (1)

[Claims] In an information display system that displays message information in alphanumeric characters, kana, kanji, or graphics on a remote display panel, the message information input from the operation unit is given a code for error control, etc. An encoder that modulates and transmits a carrier wave, and an encoder that receives and demodulates the radio carrier wave, decodes it for error control, extracts the message information, and displays the message in alphanumeric characters, kana characters, kanji characters, graphics, etc. A wireless information display system comprising: a display panel for displaying information;