JPH0261189B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a captain terminal device, and particularly to a means for searching screen information.

Conventional technology Details of the Videotex communication system, which Nippon Telegraph and Telephone Corporation started providing service in November 1980, are described in the technical reference material "Interface of Videotex communication network service" published by Nippon Telegraph and Telephone Public Corporation. However, here, communication procedures related to the present invention will be briefly explained with reference to the flowchart of the basic communication procedure shown in FIG.

To explain in order, the user hooks up the phone, and the DT (first
When you dial 166 (communication identification code) after confirming the dial tone), the telephone network identifies that it is a VideoTex communication call, checks whether you are a subscriber, and if you are a subscriber, then dials 166 (communication identification code).
dial tone) is returned to the user terminal.

After checking the SDT, the user dials the information center number (5 digits) to which he/she wishes to connect.

When the telephone network receives the information center number, it sends the subscriber identification number (ID number) and the information center number.
Send to VCP (VideoTex Communication Processing Unit).

VCP checks whether the subscriber identification number and information center number are registered on the management file. If registered, a communication start notification (subscriber identification number and information center number) is sent to the corresponding information center.

The VCP receives a communication permission response from the corresponding information center. This establishes a communication path from the terminal to the information center. This will also be an opportunity to start registering communication charges.

The information center sends out a start screen as screen information.

The VCP notifies the user to switch the line from the telephone side to the user terminal side by using a videotex switching instruction signal as a notification that the communication path has been established.

After confirming the videotext switching instruction signal, the user presses the switching button to switch the line to the user terminal side. As a response signal to the switching, a 390Hz carrier is sent from the user terminal to the VCP.

The VCP sends a turn-on sequence to detect the uplink carrier and adjusts the timing between the center modem and terminal modem. This causes the terminal modem to perform a training sequence and establish reception timing.

Immediately after the modem training sequence is successfully completed, the videotex terminal transmits the terminal profile information three times in succession, and finally transmits the delimiter code.

Screen information (start screen) is sent from the relevant information center.

Sends a request signal (based on JIS7 unit code) as a screen search request.

The information center sends screen information according to your request.

When the VideoTex terminal sends an "end code" requesting the end of communication, VCP ends the charge registration process.

Sends a charge notification screen containing the charge registration results in the image signal from the VCP. It also notifies the information center of the end of communication and charge information.

According to the disconnection instruction from VCP, the videotex terminal is disconnected in stages.

In the following steps, the user is connected to the information center to which the user is trying to connect, the screen information requested by the user is received from among the screen information stored in that information center, and the user also requests termination of communication. Upon request, the connection will be severed.

Now, with reference to the block diagram of FIG. 3, a brief explanation will be given of a videotex terminal that is connected to an information center according to the procedure described above, receives screen information sent from the information center, and displays it on a display device.

In the figure, 1 is a central office line connection terminal for connecting to the telephone network, 2 is a telephone connection terminal for connecting a telephone,
3 is a general-purpose microprocessor (CPU), 6 is a modulation/demodulation circuit (modem) for modulating and demodulating digital signals to analog signals and analog signals to digital signals, and 7 is a modem interface for communicating between modem 6 and CPU 3. circuit, 9 is a keypad for making requests such as screen search requests, 10
1 is a keypad interface for transmitting input signals from keypad 9 to CPU ₃ ; 11 is a system control circuit for system control such as system clock generation and address decoding; and 12 is for storing received screen information. display memory for, 1
3 is a display control unit that controls writing from the CPU ₃ to the display memory 12 and reading from the display memory 12 for display; 14 is a signal (display) suitable for a display device that displays information read from the display memory 12; If the device is a color CRT, a display processing unit for synthesizing red, green, and blue color signals; 1;
5 is a display signal output terminal, 21 is various signal detection circuits such as DT, SDT, and videotex switching instruction signals;
22 is a sending circuit that sends out a signal equal to dialing on a telephone; 23 is a network control circuit (NCU) that controls disconnection of the telephone or various signal detection circuit 21, sending circuit 22, or modem 6 to the telephone network; , 24 indicate a writable and readable memory for storing the communication identification code and the information center number. This memory 24 has a large number of information centers, and the types of information centers that are often used may differ depending on the user. It is desirable that the previously inputted information center number be stored even if the terminal is powered off and then powered on again. Therefore, it is desirable to add a backup function using a battery.

Now, to explain the operation of receiving and displaying screen information using the communication procedure shown in Fig. 2 on the videotex terminal shown in the block diagram shown in Fig. 3, first, by turning on the power of this device, ,
A list of information center numbers stored in the memory 24 is displayed on the display screen. As for the display method, after the power is turned on, the CPU 3 reads out the information center number stored in the memory 24, interprets the content, processes it as image information, and displays the information center number in the display memory 12.
is written in the display control unit 13 based on the system clock generated by the system control circuit 11.
generates an address for reading data from the display memory 12, sequentially reads out the screen information stored in the display memory 12, synthesizes the read information into a signal suitable for the display device in the display processing section 14, and outputs it. A display signal is output from the terminal 15.

The user inputs from the keypad 9 the address of the information center number to which he/she wishes to connect from the list. Then, the NCU 23 immediately operates to connect the telephone network to the various signal detection circuits 21 and the sending circuit 22 via the CPU 3 (corresponding to the off-hook in FIG. 2), and the DT connects to the various signal detection circuits 21. Supplied. Then, the various signal detection circuits 21 detect reception of DT and transmit information to that effect to the CPU 3. Then, the CPU 3 sends the communication identification code stored in the memory 24 to the telephone network via the sending circuit 22. Next, after a while, an SDT is sent from the telephone network, but this is also detected by the various signal detection circuits 21 in the same way as the DT, and information to that effect is transmitted to the CPU 3, which sends the information center number (this 23456) is sent to the telephone network via the sending circuit 22. After a while, a videotext switching instruction signal is sent from the telephone network, which is also detected by the various signal detection circuit 21 and the CPU 3 is notified of this. Then, CPU3
The NCU 23 controls the connection of the telephone network to the modem 6. The videotex terminal then sends out a terminal response signal (a single frequency signal of 390 Hz) via the modem 6.

Next, it receives the turn-on sequence sent from the VCP and performs a training sequence (this function is usually included in the modem), and after completion,
According to the program stored in the program ROM 4, the terminal profile information and delimiter code are sent from the modem 6 via the CPU 3. and,
Next, receive the screen information sent from VCP,
The modem 6 converts it into a digital signal and outputs it to the CPU 3.

The CPU 3 processes and interprets the received screen information because it is sent coded in a format specified by the Captain Presentation Level Protocol Syntax (hereinafter referred to as CAPTAIN PLPS). The data is written in the area of the display memory 12 specified by the . In this way, the screen information sent from the VCP is stored in the display memory 12.

On the other hand, in parallel with this, the screen information stored in the display memory 12 is output to the display device as a display signal;
Based on the system clock generated in 1,
The display control unit 13 generates an address for reading data from the display memory 12, sequentially reads the screen information stored in the display memory 12, and the display processing unit 14 synthesizes the read information into a signal suitable for the display device. Then, a display signal is output from the output terminal 15.

Next, if the user wants to receive other screen information, he/she inputs a request from the keypad 9, which is converted from a digital signal to an analog signal by the modem 6 via the keypad interface 10 and the CPU 3, and sent to the VCP. and the screen information requested from VCP is sent. The operation of the videotex terminal up to the output of the screen information display signal is the same as described above.

The communication procedures of the Videotex communication system and the basic operation of the Videotex terminal have been briefly explained above, but next is the important aspect of the operability of the terminal. The method of screen search after FIG. 2 is as follows.

(Method 1): A method of searching the screen in a tree search manner along the screen information content from the information center.

In the case of this method, the general method of operating the terminal is to look at the classification of information displayed on the screen and input a request for the field to be searched from the keypad. In addition, in this case, input from the keypad is generally a one or two digit number and #.

(Method 2): Search by screen number.

If you already know the screen number you want to search, you can search using this method. To operate the terminal, press the – key, then enter a 4- to 9-digit number and #. However, this method is effective because
Limited to the range of the information center connected at that time.

(Method 3): Method of searching by switching information centers.

This is a method of connecting to an information center other than the currently connected information center and performing a two-screen search.

In the case of this method, the terminal is operated by pressing the switching key and then inputting the numeric key of the information center number (5 digits) to which the user wants to connect. This connects the user to the desired information center, and from now on, searching for screens within that information center is performed using method 1 or method 2.

Problems to be Solved by the Invention However, with the above-mentioned search methods, it takes a long time for the user to reach the screen information he or she wants to search.
This has the problem of requiring many operations. At the same time, there is also the problem that smooth operation is not possible unless the information center number and the like are recorded.

Therefore, there has been an increasing demand for obtaining desired screen information with simple operations.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a captain terminal device that allows a user to obtain screen information that he/she desires to search for with a simple operation.

Means for Solving the Problems To achieve this object, the captain terminal device of the present invention includes a first memory for storing communication identification code information and a second memory for storing information center number information. a third memory for storing password information, a fourth memory for storing screen request number information, and a third memory for storing screen request number information; a first transmission means for transmitting stored information to a telephone network; a modulation/demodulation means for transmitting and receiving data to and from an information center; and a means for connecting the telephone network to the first transmission means or the modulation/demodulation means. a network control circuit, an operation key for screen search, a state detection means for detecting whether or not the telephone network is connected, a discriminating means for discriminating data received by the modulation/demodulation means, and a data input/output via the modulation/demodulation means. A microprocessor circuit includes a sending means for sending data, and a control means for controlling the first sending means and the network control circuit.

Effect With this configuration, by connecting each of the above information to each of the first to fourth memories and pressing the operation key, the microprocessor circuit can detect when the state detection means indicates that it is disconnected. is the first sending means, and the first memory is sent by the procedure from FIG. 2.
It controls the transmission of each piece of information stored in the second memory, and when it detects a videotext switching instruction signal, it controls the network control circuit to connect it to the modulation/demodulation circuit. Thereafter, the modulation/demodulation means is controlled to transmit each piece of information stored in the third memory and the fourth memory in the steps starting from Fig. 2, and when the user searches, the information screen is received. Become.

In addition, if the status detection means indicates that the connection is being made, the modulation/demodulation means is controlled to send out the character code for center switching and each information stored in the second memory, third memory, and fourth memory. Then, the user receives the information screen that he or she wants to search in the same way as when the connection is disconnected.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a captain terminal device in an embodiment of the present invention.

In FIG. 1, 1 is a central office line connection terminal, 2 is a telephone connection terminal, 6 is a modem circuit, 7 is a modem interface circuit, 10 is a keypad interface,
11 is a system control circuit, 12 is a display memory, 1
3 is a display control unit, 14 is a display processing unit, 15 is a display signal output terminal, 21 is various signal detection circuits, 22 is a sending circuit, 23 is a network control circuit (NCU), and the above is the same as the configuration shown in Fig. 3. It is something. 4 is a modulation/demodulation means composed of a modulation/demodulation circuit 6 and a modem interface circuit 7; 5 is a first sending means composed of various signal detection circuits 21 and a sending circuit 22; 25 is a means for storing communication identification code information; A first memory, 26 a second memory for storing information center number information, 27 a third memory for storing password information, and 28 a fourth memory for storing screen request number information. , 29 is a keypad having keys for screen search. Further, reference numeral 35 denotes a state detection means 30 for detecting whether or not it is connected to a telephone network, a discriminating means 31 for discriminating data received by the modulation/demodulation means 4, a sending means 32 for transmitting data via the modulation/demodulation means 4; control means 33 for controlling the transmission means 5 and the network control circuit 23 of 1;
A microprocessor circuit (CPU) is shown.

The operation of the captain terminal configured as described above will be explained below.

First, in advance, the first to fourth memories 25 to 2
Each piece of information is stored in 8. Possible storage methods include fixed storage in a read-only memory (ROM) and voluntary storage in an arbitrary read/write memory (RAM), but these methods are not directly related to the present invention. Since it is not available, it is omitted here.

Now, as mentioned above, the first to fourth memories 25
28, the screen search key on the keypad 29 is pressed.
Then CPU35 is keypad interface 1
0 through the state detection means 30
If it is connected or disconnected, the control means 33 causes the NCU 23 to immediately operate so that the telephone network is connected to the various signal detection circuits 21 and the sending circuit 22 (in the off-hook mode shown in FIG. 2). Equivalent to),
DT is supplied to various signal detection circuits 21. Then, the various signal detection circuits 21 detect reception of DT and transmit information to that effect to the control means 33. Then, the CPU 35 sends the communication identification code stored in the memory 25 to the telephone network via the sending circuit 22. Next, after a while, an SDT is sent from the telephone network, but this is also detected by the various signal detection circuits 21 in the same manner as the DT, and information to that effect is transmitted to the control means 33, which then sends the SDT to the control means 33. The information center number stored in the memory 26 of No. 2 is sent to the telephone network via the sending circuit 22. Also, after a while, a videotext switching instruction signal is sent from the telephone network, but this also goes to the various signal detection circuits.
1 and notifies the control means 33 of the detection. Then, the CPU 35 controls the NCU 23 by the control means 33.
to connect the telephone network to the modem 6. Then, the CPU 35 causes the sending means 32 to send out a terminal response signal (a single frequency signal of 390 Hz) from the modem 6. Next, it receives the turn-on sequence sent from the VCP and performs a training sequence, and after completion, it sends out terminal profile information and delimiter code that comply with predetermined standards.

Next, the screen information (password request screen) sent from the VCP is received via the modulation/demodulation means 4, and the screen information received by the determination means 32 is converted into a captain presentation level protocol syntax (hereinafter referred to as CAPTAIN). If the data is coded in the specified format, the password number stored in the third memory 27 is sent by the sending means 32. It is sent out via the modulation/demodulation means 4. Then, after confirming that the registered password number matches the received password number, VCP sends out the initial screen. Then, the CPU 35 determines by the determining means 32 that the screen information (initial screen) received in the same manner as above is data coded in a specified format, and then displays the screen stored in the fourth memory 28. The request number information is sent by the sending means 32 via the modulation/demodulation means 4. Then, VCP sends screen information according to the received screen request number.

Hereinafter, the captain terminal device operates in the same manner as the conventional example, and outputs a signal to the output terminal 1 as a signal suitable for the display device.
A display signal is output from 5.

Also, when the screen search key on the keypad 29 is pressed, the keypad interface 10
The CPU 35 detects the input via the CPU 35, and the status detecting means 30 detects whether or not the connection is being made.If the connection is being made, the following operation is performed. When the CPU 35 detects that the connection is being made by the state detection means 30, it first sends the center switching character code and then the information center number stored in the second memory 26 to the modulation/demodulation means 4. Send via. Then, the VCP switches to the designated information center and first sends screen information (password request screen). The subsequent operations are similar to those during cutting described above.

As described above, according to this embodiment, in addition to the communication identification code and the information center number, the password number,
By having a memory that stores the screen request number and adding the various means mentioned above to the CPU, it is possible to connect to the telephone network with just one operation of pressing the operation key for screen search. Regardless of the situation, the user can receive and display desired screen information.

In addition, in this embodiment, the case where a password request screen is received and a password number is sent is described, but depending on the installation situation of the captain terminal, the above procedure may be necessary, and in that case, the third memory Of course, normal reception is possible even in this case by remembering that the password number will not be sent.

In addition, in this embodiment, for ease of explanation, there is only one operation key for screen search and the corresponding stored information (communication identification code, information center number, password number, screen request number). As described above, the effects of the present invention can be made more effective by providing a plurality of screen search operation keys and corresponding storage information.

Effects of the Invention As described above, according to the present invention, the CPU is provided with the first to fourth memories that store the password number and the screen request number in addition to the communication identification code and information center number, and the CPU has a state detection function and a discrimination function. function,
By adding data transmission function and control function, you can search the screen with just one operation of pressing the operation key, regardless of the connection status with the telephone network.
This allows the user to receive and display desired screen information.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a captain terminal device according to an embodiment of the present invention, FIG. 2 is a flow diagram of a basic communication procedure, and FIG. 3 is a block diagram of a conventional example. 4...Modulation/demodulation means, 5...First sending means, 2
3... Network control circuit, 25... First memory, 26
...Second memory, 27...Third memory, 28
... Fourth memory, 30 ... State detection means, 31
. . . Discrimination means, 32 . . . Sending means, 33 . . . Control means, 35 . . . Microprocessor circuit.

Claims (1)

[Scope of Claims] 1. A first memory for storing communication identification code information, a second memory for storing information center number information, and a third memory for storing password information, a fourth memory for storing screen request number information; and a first output for transmitting the information stored in the first and second memories to the telephone network while detecting various signals from the telephone network. means, a modulation/demodulation means for transmitting and receiving data with an information center, a network control circuit for connecting a telephone network to the first transmission means or the modulation/demodulation means, operation keys for screen search, and a telephone. a state detection means for detecting whether or not it is connected to a network; a determination means for determining data received by the modulation/demodulation means; a transmission means for transmitting data via the modulation/demodulation means; the first transmission means; and the network control. 1. A captain terminal device comprising: a microprocessor circuit having a control means for controlling the circuit; 2. When the operation key is pressed while the state detection means detects that the connection is being made, the microprocessor circuit outputs the character code for center switching, the information stored in the second memory, and the information stored in the third memory. and a second control means for controlling sequentially sending out the information stored in the fourth memory and the information stored in the fourth memory through the modulation and demodulation means. Captain terminal equipment.