JPH01157644A - Data delivering device - Google Patents

Abstract

PURPOSE:To approximately simultaneously receive data regardless of the number of equipment at a terminal side by always sending the data to a switching network repeatedly, and causing a terminal to want to receive the data to tap the data to be repeatedly sent. CONSTITUTION:The information of data 21 to which flag information is added is always read from a storing part 11 repeatedly, converted to an analog signal and sent to a line. The information read from the storing part 11 is converted to be serial and repeatedly sent. At the time of extracting the information from a terminal equipment 1 side, a connection with a data delivering device 3 is executed, and since, when the connection is executed, the data are repeatedly sent in a form to be indicated as information 22 at the terminal, the terminal side taps the next starting data and detected start information. After the start information is detected, the data sent thereafter are taken to the self-terminal side, the data are extracted, and they are displayed on, for example, a display, etc. Thus, the data can be approximately simultaneously received regardless of the number of the equipment at the terminal side.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a data delivery device that delivers data stored in a center to a terminal via a telephone network, and particularly relates to a data delivery device that delivers data stored in a center to a terminal via a telephone network. Method for economically realizing data transfer to terminal devices [Prior art] In data transfer between one center device and multiple terminal devices, conventionally, while transferring data to a certain terminal, the center device The terminal's services were occupied and access from other terminals was impossible. Therefore, in order to improve serviceability, it was necessary to install a plurality of center devices depending on the traffic, or to add a line control unit capable of controlling a plurality of terminals.

[Problem that the invention seeks to solve]

In the conventional data transfer systems mentioned above, especially in the information services targeted at the public market connected to the general public telephone network, the number of terminal devices targeted for service is extremely large, and in order to handle service requests from these terminals, it is necessary to Large-scale center equipment is required. In other words, in order to provide services to multiple (many) terminals at the same time, a service control function is required for each line on the center side.

An object of the present invention is to provide a data delivery device that solves the above problems.

[Means for solving problems]

The data distribution device of the present invention includes a storage means that stores information such as character or graphic data as a center device, and when storing information, adds flag information indicating that it is the beginning of the information to the storage means. a means for storing the flag information and data from the storage means; and a means for converting the read data into an analog signal and repeatedly transmitting it to the telephone network. When you want to retrieve stored information from a terminal, intercept the repeated data that is constantly sent out from the telephone network, detect the flag information that indicates the beginning of the information, and then sequentially pull the subsequent data into the terminal. This eliminates the need for a line-compatible control function on the center equipment side by extracting and displaying or outputting it on a terminal.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows a connection position in a telephone network T of a data delivery device according to an embodiment of the present invention. In FIG. 1, ] - is a terminal device that receives and displays data, and 2 is a distribution device that distributes signals sent on a line to a switching network. 3 is a data delivery device of the present invention.

FIG. 2 shows the block configuration of the data delivery device.

In FIG. 2, 11 is a storage unit that stores information such as characters or graphic data to be delivered to the terminal device 1, and 12 is a control unit that repeatedly reads data stored in the storage unit 11 and sends it to the line. , 13 is a modem unit that modulates the read digital data and sends it to the telephone network T, and 14 is a data creation unit that creates data to be delivered to a terminal device, for example, has the function of a word processor. 15 is a distribution amplifier installed in the telephone network T for distributing line signals sent from the data distribution device 3 to a plurality of ports, and is similar to the distribution device 2 in FIG.
shows the configuration of

FIG. 3 shows an image of the flow of information in the data delivery device. In FIG. 3, 21 is the storage unit 1 of FIG.
1 shows an image of the contents of information stored in 1. That is, it consists of data to be delivered to the terminal and start information indicating the beginning of the data. The information of the data 2I to which the flag information has been added is always repeatedly read out from the storage unit 11, converted into an analog signal, and sent to the line.

22 shows an image of the information sent to the line,
Information read from the storage unit 11 is converted into serial data and is repeatedly sent out.

When it is desired to retrieve information from the upper side of the terminal device, a connection with the data distribution device 3 is made. Once connected, the device will have a third
Since data is repeatedly sent in the form shown as information 22 in the figure, the terminal side intercepts the next start data and detects the start information. After detecting the start information, the terminal receives the subsequent data that has been sent, takes out the data, and displays it on, for example, a display.

〔Effect of the invention〕

As explained above, according to the present invention, data is always repeatedly sent to the switching network, and the terminal that wants to receive the data intercepts the data that is being sent repeatedly, and the data is delivered by the center device. By installing only one device, any number of terminals can receive data almost simultaneously, creating an efficient data distribution system.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the connection position between a data delivery device and a terminal device in a telephone network, Fig. 2 is a diagram showing a block configuration within the data delivery device, and Fig. 3 is a diagram showing the connection position of a data delivery device and a terminal device. FIG. 3 is a diagram showing an image of data being read out repeatedly and an image of information transmitted onto a sound source line. 1. Terminal device 2.. Distribution device 3.. Data delivery device 11.. Storage unit 12.. Control unit
13...Modem section 14...Data creation section
15... Distribution amplifier T... Telephone network

Claims (1)

[Claims] (1) A storage means for storing character or graphic data, a means for adding a flag indicating the beginning of information and storing the data, and constantly repeatedly reading out the stored data including the code of the beginning flag from the storage means. and a means for converting the read data into an analog signal and transmitting it to the telephone network, and when it is desired to retrieve accumulated data from a terminal connected to the telephone network, the repeating signal is transmitted from the telephone network. A data delivery device characterized by having a function of intercepting data, detecting the code of a leading flag, sequentially extracting the data, and displaying or outputting the data on a terminal.