JPH0754985B2 - Information system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial Field B Outline of Invention C Conventional Technology D Problems to be Solved by the Invention E Means for Solving Problems (Fig. 1) F Action (Fig. 1) G Example (G1) Information system configuration (Figs. 4 to 7) (G2) Basic data processing means (Fig. 8) (G3) Information system operation (1) Page image screen display mode (Fig. 2) (2) Television video screen display mode (Fig. 1) (3) Screen composition display mode (Fig. 3) (4) Automatic screen composition display mode (Fig. 1) H Effect of the invention A Industrial field The present invention is information The present invention relates to a system, in which image information can be provided from a center to a large number of specified distribution destinations, such as within one company.

B Outline of the Invention The present invention is an information system adapted to supply television image information and page image information to a plurality of terminal devices, and specifies and inputs one of the television image information to the terminal device. When there is page image information corresponding to the center, the page image information is displayed superimposed on the received television image information so that more rich information can be displayed on the terminal device. To do.

C Conventional Technology Conventionally, for example, an information system has been proposed in which various types of in-house information are supplied from a center to terminal devices provided at a large number of distribution destinations within one company.

D The problem to be solved by the invention However, the information that can be distributed by the conventional information system is basically limited to the information consisting of an array of symbols, numbers, characters, etc. Even if the information is provided, The content was only in a display format that was difficult to grasp intuitively, and it was insufficient to distribute a wide variety of information with rich content.

The present invention has been made in consideration of the above points, and a terminal device receives information composed of a television video signal supplied from a television video signal source such as general television broadcasting, satellite broadcasting, and a video recording device. By superimposing the page image data stored in the center on the television video signal, it is possible to supply abundant and useful information to the terminal device. It is a thing.

E Means for Solving the Problems In order to solve the problems, in the present invention, the video text database 6 in which page image data is stored.
And a center 3 having a host computer 4, and a plurality of terminal devices 1A, 1B ... To which a television image signal is supplied via a CATV line 10 and page image data is supplied via a communication network 2. Each terminal device 1A, 1B ...
... are the key input units 23 and 24 for generating the requested data, respectively.
The television image signal is supplied to one input and the page image data is supplied to the other input, and the television image signal and the page image data are selectively or mixed and supplied to the display means 52. The switch means 58 and the control means 44 for controlling the switching operation of the switch means 58 based on the control data are provided, and the host computer is a television set supplied from each terminal device 1A, 1B, ... Through the communication network 2. The device has a device control data generating means for generating device control data corresponding to request data designating one of the video information, and a reading means for reading out page image data corresponding to the request data from the video text database 6 for communication. The page image data requested from the host computer 4 via the network 2 is transmitted to the terminal device 1A, 1B ... The terminal devices 1A, 1B, which have been supplied to the other input of the switch means 58 and have the device control data as the control data, have the request data generated.
Control means 44 so that the switch means 58 superimposes the page image data on the television image signal and supplies it to the display means 52 when the device control data indicates the superimpose display mode. Then, the switch means 58 is controlled.

In each terminal device, when one of the receiving channels of the television channel image signal is designated, the television channel image of the designated channel is displayed on the monitor 22 and the designated channel data is transmitted to the center 3. It is judged whether or not there is page image data corresponding to the designated channel in the video text database 6 of the center 3, and if there is, the television which transmits and receives the page image data to the terminal device which issued the request. Superimpose display on Jiyoung video.

By doing so, it is possible to superimpose information (for example, commentary articles) to be added on the side of the center 3 on the received television image on the same display screen, so that the user of the terminal device can obtain a much richer content of information. Can be provided to.

Therefore, when it is desired to display only one of the displayed television image or page image on the terminal device displaying the superimposed image, the user of the terminal device displays the television image display mode. Alternatively, either one of the page image display modes can be selectively designated and input. This selection designation input data is transmitted to the center, and in response to this, the center switches the terminal device from the superimposed display mode to either the television image display mode or the page image display mode.

Thus, when the user of the terminal device wants to read either one of the superimpose displays instead of the superimpose display, this can be selected as necessary, and thus, an information system capable of responding to more realistic requests can be obtained.

G Example Hereinafter, the drawings will be described in detail as examples when the present invention is applied to an information system in one company.

(G1) Configuration of Information System FIG. 4 shows the information system as a whole, and a large number of terminal devices 1A, 1B, ... Installed in predetermined departments in the company are connected to the center 3 via the communication network 2. . In the case of this embodiment, the information system is arranged to distribute information necessary for business management to each section constituting the management department of the company, and the terminal devices 1A, 1B ... It is provided in the offices of department managers, section managers, and section managers.

The center 3 includes a central processing unit 5 controlled by a host computer 4, a video text database 6 storing page image data, and an input unit 7.

When a request is issued from the terminal devices 1A, 1B, ..., The host computer 4 receives the request via the communication network 2, reads the corresponding page image data from the video text database 6, and requests via the communication network 2. Terminal device 1
Supply to A, 1B .... In addition to this, the central processing unit 5
Even if there is no request from the terminal devices 1A, 1B, ... Based on the data input from the input device 7 of the center 3, as needed, all or some of the terminal devices 1A, 1B. Then, predetermined page image data can be supplied, and thus emergency information can be distributed.

Further, the center 3 has a data / video conversion device 8 and operates the data / video conversion device 8 when predetermined page image data (that is, “enter / leave table” page image data) is retrieved from the video text database 6. Then, it is converted into a TV video signal TVIN _I and supplied to the CATV line 10.

The CATV line 10 is from a general broadcast received by the television antenna 15, a satellite broadcast (for example, meteorological broadcast) received by the parabolic antenna 16, and another television video signal source 17 (for example, a video signal recording device). In response to the obtained television image signal TVIN _O , the terminal device 1
Supply to A, 1B ... and television receivers 11A, 11B. Here, the television receivers 11A, 11B, ... Are provided in, for example, a specific workplace, a cafeteria, a lobby, etc., and are capable of providing television employee video information to general employees.

In addition to the above configuration, the information system of FIG. 4 is configured such that the center 3 can be connected to the dispatch center 19 via the communication network 2 and thus the terminal devices 1A, 1B ... When a request is made, the host computer 4 instructs the dispatch center 19 to arrange a dispatch through the communication network 2,
Upon receiving the report of the result, the terminal device that has received the request can be notified of that fact.

Further, the communication network 2 is coupled with input devices 12A, 12B, ... Arranged at predetermined positions other than the terminal devices 1A, 1B, ..., For example, code data designating emergency information can be inputted. There is.

As shown in FIG. 5, the terminal devices 1A, 1B ... Have a video text data processing device 21, a monitor 22, a master key input device 23, and a slave key input device 24.

The video text data processing device 21 has a central processing unit (CPU) 31 of a micro computer configuration, and a bus 32
It is connected to the communication network 2 through the bus 32, the input / output device 34, and the modem 35 according to the program read from the program ROM 33 through the RAM 36 when the page image data is fetched through the modem 35 and the input / output device 34. Data processing.

The CPU 31 of the video text data processing device 21 is connected to the master device key input device 23 through the input / output device 37. The master key input device 23 has a CPU 41, a program ROM 42, a RAM 43 and an input / output device 44 of a one-chip microcomputer configuration, and when each key of the key matrix 45 is operated by a key top arranged on the keyboard. After the CPU 41 fetches the input data into the RAM 43 through the input / output device 44 in accordance with the program of the program ROM 42, it can be transferred to the CPU 31 through the input / output device 44 and further through the input / output device 37 of the video text data processing device 21. It is done like this.

On the contrary, the CP of the video text data processing device 21
When the code data for remote controlling the monitor 22 is given from U31, the input / output device 44
The remote control signal RMT is transmitted through. Further, the CPU 31 of the parent device key input device 23 receives the lighting command data or the alarm command data from the CPU 31 through the input / output devices 37 and 44, and operates the display element 46 made of, for example, an LED or the alarm element 47 made of, for example, a buzzer.

The child device key input device 24 has a key switch 48 whose opening and closing is controlled by operating a key top, and the input data thereof is sent to the CPU 41 via the input / output device 44 of the parent device key input device 23.
Is supplied to. Here, the key switch 48 is a key switch (“attended” switch, which is a part of the key switch included in the key matrix 45 of the master key input device 23,
There is a one-to-one relationship between the "away" switch, the "absent" switch, and the "distributed" switch, and thus the same key input as when the keys of the key matrix 45 are operated by the key switch 48. Data can be supplied to the CPU 41.

Further, the child device key input device 24 has a display element 49 and an alarm element 50 corresponding to the display element 46 and the alarm element 47 of the parent device key input device 23, and when the display element 46 and the alarm element 47 operate, It is controlled by the CPU 41 of the master device key input device 23 so as to operate in parallel with this.

The monitor 22 is a TV video signal TV from the CATV line 10.
It has a television signal receiving section 51 for receiving IN _O. The television signal receiving section 51 selects one of a plurality of channel television image signals coming from the CATV line 10 by a built-in television channel circuit, and then similarly uses a built-in standard television. Three primary color signals RGB1 having the format of a standard television system (for example, NTSC system) television signal in the digital signal decoding circuit.
Through the switch circuit 53 of the display device 52 to the cathode ray tube (CR
T) 54, thus displaying the reproduced image of the television video signal received on the CRT 54.

Similarly, the television signal receiving unit 51 reproduces the audio signal AUD1 from the television signal received by the channel selection and supplies the audio signal AUD1 to the speaker 56 through the switch circuit 55 of the sound device 58, thereby selecting the channel. Reproduces the sound of the received TV video signal.

The reception tuning operation of the television signal receiving section 51 is controlled by the control signal CON1 of the remote control circuit 57. The remote control circuit 57 has a remote control signal RMT supplied from the master key input device 23.
The corresponding control signal CON1 is supplied to the television signal receiving section 51. At the same time, the remote control circuit 57 controls the switch circuits 53 and 55 by the control signal CON2 while controlling the television signal receiving section 51 by the control signal CON1 to output the three primary color signals RGB1. The audio signal AUD1 is supplied to the speaker 56 while being supplied to the CRT 54.

Here, in the parent device key input device 23, the key matrix 45 has a television reception mode (that is, a "television" display mode).
When the designated tuning operation is performed, the CPU 41 sends the corresponding remote control signal RMT via the input / output device 44 to control the television signal receiving section 51 to the tuning receiving state. When the key matrix 45 of the master key input device 23 is designated to the page image data reception mode (that is, the "management information" display mode), the remote control circuit 57 activates the switch circuits 53 and 55 by the control signal CON2. A switching operation is performed on the video text data processing device 21 side.

Further, the remote control circuit 57 receives the television signal by the control signals CON1 and CON2 when the key matrix 45 of the master device key input device 23 is designated in the superimpose reception mode (that is, the "screen composition" display mode). The television image signal RGB1 and the audio signal AUD1 of the unit 51 are input to the switch circuits 53 and 55. At this time, the video text data processing device 21 determines the image display signal based on the key input data input from the master key input device 23.
By alternately switching the switch circuit 53 by the superimpose bit SPI included in VTX,
The screen in which the image signal RGB2 of the image display signal VTX is superimposed on the television image signal RGB1 is displayed.

The video text data processing device 21 has a video RAM 61 for supplying an image display signal VTX to the monitor 22 and a sound generator 62 for supplying an audio signal AUD2 to the monitor 22.

The video RAM 61 is provided with an image signal RGB2 for displaying the page image on the CRT 54 and a super-in image signal for displaying the page image on the CRT 54 based on the page image data coming from the communication network 2 via the modem 35. Pose Bit SP
Get i and.

When the CPU 31 converts the page image data into the image display signal VTX and displays it on the CRT 54 of the monitor 22, the sound generator 62 generates a sound indicating this (for example, a click sound) under the control of the CPU 31. As a result, the user can be audibly notified of the arrival of new image display data.

In this way, the terminal device from the center 3 via the communication network 2
The page image data transmitted to 1A, 1B, ...
And is displayed on the CRT 54 of the monitor 22, and at the same time, an audio signal AUD2 is generated in the sound generator 62 each time page image data arrives.

The video text data processing device 21 includes a printer 6
3. The recording device 64 is connected so that the page image data transmitted from the center 3 to the CPU 31 can be printed out and recorded.

(G2) Basic data processing procedure With the above configuration, the information system is the terminal device 1A, 1B.
The center 3 creates device control data on the basis of the request from the ..., and the device control data controls the respective devices of the terminal devices 1A, 1B. Responsive to display a screen based on the signal.

That is, in step SP1 of FIG. 8, when the user operates a desired key using the master device key input device 23 of the terminal devices 1A, 1B ..., The CPU 41 of the master device key input device 23 operates in response to the following operation. The code data corresponding to the key operated in step SP2 is sent to the video text data processing device 21 through the input / output device 44.

At this time, the CPU 31 of the video text data processing device 21 takes in the code data from the master key input device 23 through the input / output device 37 in step SP3 and converts it into a code which can communicate with the center, and then in step SP4. It is determined whether or not a key for controlling the function of the fax data processing device 21 itself has been operated. If a positive result is obtained here, the CPU 31 moves to the next step SP5 and executes the processing. As the processing of the video text data processing device 21 itself, the two-screen mode, the recording device 64
Processing such as recording and reproducing page image data to and from the printer 63 and printing out the data to the printer 63.

On the other hand, if a negative result is obtained in step SP4, the CPU 31 of the video text data processing device 21 moves to step SP6 and sends the key input data to the center 3 via the communication network 2.

Here, when controlling functions other than the video text data processing device 21, a request for pulling out page image data stored in the video text database 6 of the center 3, a request for inputting page image data for the entry / exit table, a dispatch center There is a vehicle dispatch request to 19, and a request to set the display mode of the monitor 22.

At this time, the host computer 4 of the center 3
After receiving and storing the key input data in SP7, the process corresponding to the key input data is executed in the next step SP8, and the page image data or the device control data is sent via the communication network 2 as a response to the request. Send back to the requesting terminal.

The center 3 stores the request data coming from the terminal at step SP7 each time the display mode is specified, the reception channel is specified, and the page image data to be retrieved is specified from the terminal devices 1A, 1B .... By doing so, it is possible to create data for grasping the operational status of the information system.

At this time, in the terminal device, the CPU 31 of the video text data processing device 21 receives the data sent from the center 3 through the communication network 2 at step SP9, and the data sent at the next step SP10 is the device control. Judge whether it is data or not.

Here, the device control data means control data for all the devices that the host computer 4 needs to control when viewed from the host computer 4 of the center 3, and the first control item is the video text data processing device 21. 2 has an item for controlling the display mode when displaying image data on the monitor 22, and a second item for controlling the master unit key input device 23 and the slave unit key input device 24. Among the control items for the master key input device 23, the items for controlling the display element 46 and the alarm element 47 included in the master key input device 23 and the items for controlling the output of the remote control signal RMT to the monitor 22. And are included.

On the other hand, when the data transmitted from the center 3 to the video text data processing device 21 is not the device control data, it becomes the dais image data extracted from the video text database 6 of the center 3.

Therefore, when the CPU 31 of the video text data processing device 21 obtains a negative result in step SP10, it executes step SP11.
Then, in the video RAM 61, the page image data is decoded into the image signal RGB2, and the sound generator
By driving 62, an audio signal AUD2 is generated.

At this time, the monitor 22 displays the image signal RG at step SP12.
B2 is displayed on the CRT 54 and sound is generated in the speaker 56 based on the sound signal AUD2.

On the other hand, if a positive result is obtained in step SP10,
The CPU 31 proceeds to step SP13 in FIG. 8 and determines whether the content of the data transmitted from the center 3 is data for controlling the output mode of the video text data processing device 21 itself. If a positive result is obtained here,
The CPU 31 executes the processing corresponding to the output mode control data transmitted in step SP14 inside the video text data processing device 21. This process
Actually, the CPU 31 reads the program corresponding to the transmitted output mode control data from the program ROM 33, and the video RAM 61 and the sound generator 62.
It is executed by controlling.

On the other hand, if a negative result is obtained in step SP13, the CPU 31 proceeds to next step SP15. This step SP1
Reference numeral 5 is a step for judging whether or not the device control data transmitted from the center 3 is control data for the master key input device 23 (and the slave key input device 24), and a negative result is obtained. This means that the content of the device control data is the control data of the printer 63 or the recording device 64 provided in the video text data processing device 21,
Accordingly, the CPU 31 moves to step SP16 and executes the control operation of the printer 63 and the recording device 64.

On the other hand, when a positive result is obtained in step SP15, this means that the content of the device control data transmitted from the center 3 is the control data for the master key input device 23, and therefore the CPU3
In step SP17, the control data is converted into a code which can be easily processed by the CPU 41 of the master key input device 23 and transmitted to the CPU 41 of the master key input device 23.

At this time, the CPU 41 receives the transmitted control data in step SP18, and then moves to step SP19. This step SP19 is a step for judging whether or not the transmitted control data is data to be processed inside the master unit key input device 23 and the slave unit key input device 24, and the master unit key input device 23 The CPU 41 executes this judgment, and when a positive result is obtained, the CPU 41 performs processing in step SP20 based on the contents of the control data. As the processing, the master unit key input device 23 and the slave unit key input device
There is a process of driving the 24 display elements 46 and 49 and the alarm elements 47 and 50. Here, the display element 49 and the alarm element 50 of the child device key input device 24 are driven in parallel with the display element 46 and the alarm element 47 of the parent device key input device 23 under the control of the CPU 41.

On the other hand, when a negative result is obtained in step SP19, this means that the content of the transmitted device control data is not the control data of the master device key input device 23 and the slave device key input device 24 itself. It means that the CPU 41 of the master device key input device 23 is set to step SP2.
Move to 1 and send remote control signal RMT.

At this time, the remote control circuit 57 of the monitor 22 causes the remote control signal RMT at the next step SP22.
The TV signal receiving unit 51
Or a control signal CON2 for the switch circuits 53 and 55 of the display device 52 and the sound device 58.

Thus, the remote control circuit 57 receives the signal by switching the switch circuits 53 and 55 to the television signal receiving unit 51 side by selecting a channel to be received according to the content of the remote control signal RMT. The video signal is displayed on the CRT 54, and the sound is generated from the speaker 56. Further, the remote control circuit 57 uses the control signal CON2 to switch the switch circuit 53 and the switch circuit 53 according to the content of the remote control signal RMT.
By switching 55 to the video text data processing device 21 side, the image display signal VTX from the video text data processing device 21 is displayed on the CRT 54, and the sound based on the output AUD2 of the sound generator 62 is generated from the speaker 56. It

As described above with reference to FIG. 8, the information system shown in FIGS. 4 and 5 has the video text data processing device 21, the monitor 22, the master key input device 23, and the slaves constituting the terminal devices 1A, 1B. The machine key input device 24 performs a series of sequence operations under the control of the host computer 4 of the center 3 1
By forming the two systems, the transmission system of the page image data stored in the video text database 6 of the center 3 and the transmission system of the television image signal are
It is possible to construct an information system that is connected so as to have practically sufficient consistency in the terminal devices 1A, 1B ....

Then, when the key operation for requesting the distribution of arbitrary information from each of the terminal devices 1A, 1B, ... Is made at the master device key input device 23 or the slave device key input device 24, the input data is stored. Video text data processor 21
Through the host computer 4 of the center 3, and after the host computer 4 has performed the data processing necessary for the management of the information system, it creates device control data based on the processing result and stores it. Video text data processing device 21, monitor 22 system, or video text data processing device 21, master device key input device 23, monitor
By going down to the 22 system, the entire information system is controlled as one.

The master device key input device 23 and the slave device key input device 24 include, for example, the keyboards of the configurations shown in FIGS. 6 and 7, and are adapted to input data through the keyboards. In response to this, the following action is taken.

In FIG. 6, reference numeral 71 denotes a monitor operation mode switching switch for designating the display mode of the monitor 22, which is a "management information" switch 71A for displaying a page image and a page image for the television image superimposed display. It is composed of a "screen composition" switch 71B for displaying and a "TV" switch 71C for displaying a television image.

72 is a numeric keypad operated when entering numerical data, 73
Represents a page data designating key operated to designate the page number when reading out the page image data stored in the video text database 6, and includes fixed keys K _{1 to} K ₁₄ and free keys F ₁ to. It consists of F ₁₄ and.

74 is an entry / exit input switch, which is an "attendance" for the user to enter his / her individual situation when he / she is present, away, or absent.
Switch 74A, "away" switch 74B, and "absent" switch 74C. Further, each switch is provided with lamps 74AX, 74BX, 74CX which are lit and displayed by the center 3.

Reference numeral 75 is a specific function key, which is operated when inputting a specific function.

Reference numeral 76 denotes a "vehicle allocation" switch, which is operated when the terminal device issues a vehicle allocation request to the vehicle allocation center 19.
The lamp 76A is turned on when the vehicle is accepted at the vehicle, and when the vehicle allocation at the vehicle allocation center is completed, the vehicle allocation completion lamp 77
Is lit.

Reference numeral 78 denotes a buzzer, which sounds when a vehicle is dispatched or when emergency information is distributed for a predetermined time, for example, 3 seconds.

Reference numeral 79 is an "emergency / e-mail" switch, which is operated when transmitting a message from the terminal device to another terminal device.

Reference numeral 80 denotes an "emergency display" lamp, which is lit and displayed when emergency information is distributed from the center 3.

Reference numeral 81 is a "TV power" switch, which is operated when the monitor 22 is turned on.

Further, in the child device key input device 24 of FIG. 7, 24A is the "attended" switch, 24B is the "away" switch, and 24C is the "absent" switch.
The switches and 24D are "distributed" switches, and correspond to the switches 74A, 74B, 74C, and 76 of the parent device key input device 23.

24E is a vehicle dispatch buzzer and 24F is a vehicle dispatch completion lamp, which correspond to the buzzer 78 and the indicator light 77 of the master device key input device 23, respectively.

(G3) Operation of the information system The information system having the above-mentioned configuration has the video display database 6 of the center 3 in the screen display mode as described below.
The page image data stored in is displayed on the terminals 1A, 1B, ... through the communication network 2 and the CATV line is displayed.
Through 10, it is possible to display the television image signal supplied from the television image signal source on the screen.

(1) Page image screen display mode In this screen display mode, the page image data stored in the video text database 6 of the center 3 is displayed as it is on the CRT 54 of the monitor 22. At SP41, the processing program is started by operating the "management information" switch 71A (Fig. 6) of the master unit key input device 23. At this time, the CPU 41 of the master device key input device 23 sends the corresponding key input data to the video text data processing device 21 in the next step SP42.

The CPU 31 of the video text data processing device 21 receives the key input data at step SP43, converts the code, and then moves to the next step SP44 to transmit the key input data to the center 3.

At this time, the host computer 4 of the center 3
The key input data transmitted in SP45 is received and stored.

After that, the host computer 4 sends out the code data for setting the terminal device which issued the request in the page image display mode in step SP46.

At this time, the CPU 31 of the video text data processing device 21 receives the code data in step SP47, moves to the next step SP48, sets the video text data processing device 21 as a whole in the page image display mode, and then executes step SP
At 49, the device control data contained in the code data transmitted from the center 3 is code-converted and sent to the master unit key input device 23.

At this time, the CPU 41 of the master device key input device 23 receives the device control data in step SP50, and the monitor 22
Sends a remote control signal RMT to control the page image display mode. In step SP51, the remote control circuit 57 of the monitor 22 receives this remote control signal RMT and switches the switch circuits 53 and 55 to the video text data processing device 21 side to set the page image display mode.

In this way, when the "management information" switch 71A of the master key input device 23 is operated, the host computer 4 causes the video text data processing device 21 of the terminal device which issued the request.
Also, the monitor 22 is set to the page image display mode. In this state, the operator uses the numeric keypad to enter the page image data number to be retrieved from the video text database 6.
72 or the key switches 73 and 75 are selected and input to specify. At this time, the CPU 41 of the master device key input device 23
Sends the corresponding key input data to the video text data processing device 21 in the next step SP53, and the CPU 3
1 receives the key input data at step SP54 and, after code conversion, moves to the next step SP55 and sends the key input data to the center 3.

The host computer 4 of the center 3 receives and stores the key input data in step SP56, moves to the next step SP57, extracts the designated page image data from the video text database 6 and transmits it to the terminal device.

At this time, the video text data processing device 21 of the terminal device
The CPU 31 decodes the page image data transmitted in step SP58 and displays the display signal VTX and the audio signal AUD.
2 is generated and supplied to the monitor 22. As a result, step SP5
At 9, the image corresponding to the page image data extracted from the video text database 6 can be displayed on the CRT 54 of the monitor 22.

Thus, the series of page image screen display mode programs started when the switch 71A is operated is completed, and the operations of the host computer 4 of the center 3 and each device of the terminal device are completed in step SP60.

In this way, the user of the terminal device can
By operating the video text database 6
The data stored in can be retrieved and used as needed.

(2) Television image screen display mode When the "TV" switch 71C of the master key input device 23 is operated, the information system enters the television image screen display mode program shown in FIG. That is, the CPU 41 of the master device key input device 23, the switch 71C in step SP65.
When is operated, the process proceeds to the next step SP66 and the corresponding key input data is sent to the CPU3 of the video text data processing device 21.
The CPU 31 receives the key input data at steps SP67 and SP68, converts the code, and sends the converted data to the center 3. At this time, the host computer 4 of the center 3 receives and stores the key input data at step SP69, and at the following step SP70, sends out the code data for putting the requested terminal device into the television image display mode.

This code data is received by the CPU 31 of the video text data processing device 21 in step SP71, and the CPU 31
Then, in step SP72, the video text data processing device 21 as a whole is set to the television image display mode, and then in step SP73, the device control data contained in the transmitted code data is converted to the parent code. To the machine key input device 23.

At this time, the CPU 41 of the master device key input device 23 makes the step SP74
To receive and monitor device control data
Generates a remote control signal RMT that causes the 22 to enter the television image display mode. The remote control circuit 57 receives the remote control signal RMT at step SP75 and switches the switch circuits 53 and 55 to the television signal receiving section 51 side, thus setting the monitor 22 in the television image display mode.

Then, the user presses the numeric keypad 72 (6th keypad) in step SP76.
When a channel to be received is selected using the (Fig.), The CPU 41 of the master device key input device 23 generates a remote control signal RMT for selecting the channel specified in step SP77, whereby the remote control circuit 5
Step 7 controls the television signal receiving unit 51 in step SP78 to receive the television broadcast of the channel, and thus the television image screen is displayed on the CRT 54.

On the other hand, the CPU 41 of the master device key input device 23 sends a channel selection signal to the monitor 22 in step SP77, and
In step SP79, the key input data corresponding to the designated channel is sent to the video text data processing device 21.

In response to this, the CPU 31 of the video text data processing device 21
Receives the key input data at steps SP80 and SP81, converts the code, and sends it to the center 3.

At this time, the host computer 4 of the center 3 makes a step SP
After the key input data is received and stored at 82, the process proceeds to the next step SP83. This step SP83 is a step for determining whether or not the page image data corresponding to the channel designated in the video text database 6 is stored. If there is no such stored data, the host computer 4 makes a negative result in step SP83. By the above, the program is terminated without any processing.

As a result, the "TV" switch 71C of the main unit key input device 23
The television image screen display program started by the operation of is ended, and the center 3 and each device of the terminal device which issued the request end the processing step in step SP84, thus the master key input device 23 The television image screen generated by the key operation of the keyboard is displayed on the monitor 22 under the control of the host computer 4 of the center 3.

(3) Screen synthesis display mode The screen synthesis display program is started by operating the "screen synthesis" switch 71B of the master unit key input device 23 in step SP91 of FIG. At this time, the CPU 41 of the master device key input device 23 sends the corresponding key input data to the video text data processing device 21 at step SP92, and the CPU 31 receives this key input data at step SP93, SP94, SP95 and performs code conversion. It is received and stored in the host computer 4 of the center 3.

The host computer 4 of the center 3 sends the code data for putting the terminal device in the superimpose display mode in the subsequent step SP96.

This code data is received by the CPU 31 of the video text data processing device 21 at step SP97, and then the video text data processing device 21 at step SP98.
Is set to the superimpose display mode, the process proceeds to step SP99, where the device control data is code-converted and sent to the master unit key input device 23.

The CPU 41 of the master device key input device 23 receives the device control data transmitted in the next step SP100 and generates a remote control signal RMT for causing the monitor 22 to be in the superimpose display mode, and the next step S100.
When the remote control circuit 57 receives the remote control signal RMT in P101 and controls the switch circuits 53 and 55 in the superimpose display mode, the television signal received from the television signal receiving unit 51 on the CRT 54 is supplied. The monitor 22 is set to a superimpose display mode in which a display screen obtained by superimposing the display signal VTX provided from the video text data processing device 21 on the video signal can be obtained.

In this state, when the user specifies the channel of the broadcast wave to be received by the television signal receiving section 51 by using the ten-key pad 72 of the master unit key input device 23 in step SP102, the CPU 41 of the master unit key input device 23 Step S
A remote control signal RMT for selecting the channel designated in P103 is generated. At this time,
In step SP104, the remote control circuit 57 of the monitor 22 controls the television signal receiving section 51 to receive the television broadcast of the designated channel and supply it to the CRT 54 through the switch circuit 53.

On the other hand, the user inputs the master key input device 2 in step SP105.
When the number of page image data to be displayed is input using the ten-key pad 72 and the key switches 73 and 75 of 3, the CPU 41 of the master key input device 23 sends the corresponding key input data in the next step SP106 to the video text data processing device 21. To the CPU31 at step SP107.
After converting the received code, the data is sent to the center 3 in the next step SP108.

As a result, in the subsequent step SP109, the host computer 4 of the center 3 receives and stores the key input data transmitted, and then in the following step SP110, the page image data designated is read from the video text database 6 and transmitted to the terminal device. To do.

At this time, the video text data processing device 21 of the terminal device
The CPU 31 decodes the page image data in step SP111 and supplies the display signal VTX and the audio signal AUD2 to the monitor 22. As a result, monitor 22 is displayed at step SP112.
Displays the page image data transmitted from the center 3 by superimposing it on the television image signal received by the television signal receiving section 51.

Thus, the screen compositing display processing program ends, and the center 3 and each device of the terminal device that has issued the request end all processing in step SP113. As a result, a superimpose screen is obtained on the CRT 54 of the monitor 22.

(4) Automatic screen composition display mode In this display mode, the user of the terminal device 1A, 1B ...
As described above with respect to steps SP65 to SP83 in the figure, when the television projection video screen display mode is selected, it is considered necessary for the television projection video displayed on the monitor 22 on the side of the center 3 accordingly. The page image information is automatically superimposed on the television image. For example, when a weather information image is displayed by satellite broadcasting as a television image, it is used to superimpose a commentary necessary for viewing the weather information image, such as a weather condition.

That is, when a positive result is obtained as a result of the determination as to whether or not the page image data corresponding to the channel designated by the master key input device 23 in the video text database 6 in step SP83 in FIG. The host computer 4 shifts to step SP120 and sends the code data for setting the requested terminal device in the superimpose display mode.

At this time, the video text data processing device of the terminal device
After receiving the code data in step SP121, the CPU 31 of 21 moves to step SP122 to set the video text data processing device 21 to the superimpose display mode, and then to the code data transmitted in the following step SP123. The included device control data is code-converted and sent to the master device key input device 23.

At this time, the CPU 41 of the master device key input device 23 makes the step SP124
To receive and monitor device control data
Generates a remote control signal RMT that puts 22 in superimpose display mode. The remote control circuit 57 of the monitor 22 receives this remote control signal RMT in the following step SP125, and thereby sets the monitor 22 to the superimpose display mode. Thus, the video text data processing device 21 and the monitor 22 are set to the superimpose display mode.

The host computer 4 of the center 3 uses the above-mentioned step SP.
When a predetermined time has elapsed after sending the code data at 120, the above-mentioned step SP76 is performed at step SP126.
The page image data corresponding to the channel designated in (1) is taken out from the video text database 6 and transmitted to the terminal device.

At this time, the video text data processing device 21 of the terminal device
The CPU 31 decodes the page image data transmitted in step SP127 to display the display signal VTX and the audio signal AUD2.
Is generated and is supplied to the monitor 22. As a result monitor
Reference numeral 22 denotes page image data prepared in advance in the video text database 6 of the center 3 for the television projection video received by the television projection signal receiving section 51 on the CRT 54 based on the signal supplied at step SP128. The page image based on can be superimposed.

In this way, when the user of the terminal device arbitrarily receives the television image signal as necessary, the page information considered necessary on the center 3 side is automatically superimposed on the television image and used. It is possible to provide the information to the user, and thus, the user can further understand the content of the information obtained by the television image by the page information.

By the way, when the page image data supplied from the center 3 side is expressed in such a way as to be superimposed on the television image, it may be difficult to understand in some cases. In such a case, it is desirable that either the television image or the page image can be switched depending on the user's selection.
In this case, the user may select and operate the "management information" switch 71A or the "screen composition" switch 71B of the master key input device 23 in step SP129. At this time, the CPU 41 of the master device key input device 23 sends the corresponding key input data in step SP130 to the video text data processing device 21, and the CPU 31 of the next step SP131, SP132.
At, the key input data is received, converted into a code, and sent to the center 3.

At this time, the host computer 4 of the center 3 makes a step SP
After receiving the key input data transmitted in 133, the process proceeds to step SP134, and the code data for setting the terminal device to the page image display mode or the television image display mode is transmitted.

In response to this, in the terminal device, the CPU 31 of the video text data processing device 21 receives the code data in step SP135 and then moves to step SP136 to display the video text data processing device 21 in the page image display mode or the television image display. Set to mode, then step SP
The device control data included in the code data transmitted in 137 is code-converted and sent to the master device key input device 23.

The CPU 41 sends the remote control signal RMT to the monitor 22 to receive the device control data and set the monitor 22 to the page image display mode or the television image display mode in the subsequent step SP138.

At this time, the remote control circuit 57 of the monitor 22 receives the remote control signal RMT in step SP139 and switches the monitor 22 to the page image display mode or the television image display mode. This allows monitor 22
May specify and display only one of the page image displayed on the superimpose screen and the television image in step SP128 described above. Thus, when the display on the CRT 54 of the monitor 22 becomes inconvenient due to the automatic superimposition on the side of the center 3, the user can operate the page image or the television image as needed. It is possible to switch to an operation mode in which only one of them is displayed.

In this way, the processing program of the center 3 and each device of the terminal device for which the request is issued ends, and the processing program of the automatic screen compositing display mode ends in step SP140.

H Effect of the Invention As described above, according to the present invention, when the terminal device specifies the reception channel and receives the television image signal, the center side wants to provide the page image data to the user as needed. In this case, by automatically transmitting the page image data from the center to the terminal device side and superimposing the page image data on the television video signal for display, more rich information can be displayed to the user. The information system that can be provided can be easily realized.

In addition to this, when the user wants to select and display one of the combined screens obtained by superimposing on the monitor of the terminal device by the automatic screen composite display mode The terminal device side can make a request to that effect to the center, so that the request can be responded to under the control of the center. Thus, it is possible to easily realize an information system that can prevent inconvenience that may occur due to automatic screen synthesis from the center side.

[Brief description of drawings]

1 is a flow chart showing a main processing procedure of an information system according to the present invention, FIGS. 2 and 3 are flow charts showing a processing procedure of a related display mode, and FIG. 4 is a whole configuration of the information system. Block diagram, FIG. 5 is a block diagram showing the detailed configuration of the terminal device, and FIGS. 6 and 7 are schematic diagrams showing the keyboards of the master unit key input device and the slave unit key input device of FIG. FIG. 8 is a flow chart required for explaining the basic data processing procedure of the information system. 1A, 1B ... Terminal device, 2 ... Communication network, 3 ... Center, 4
...... Host computer, 6 …… Video text database, 7 …… Input device, 8 …… Data / video conversion device, 10 …… CATV line, 19 …… Vehicle distribution center, 21 …… Video text data processing device, 22 …… … Monitor, 23 …… Master device key input device, 24 …… Slave device key input device.

Front page continuation (72) Inventor Koji Kimura 1-3-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Company (72) Inventor Isamu Inagaki 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo Sony Incorporated (72) Inventor Shigeo Matsumoto 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation (72) Inventor Makoto Yoshino 1-2-1 Otemachi, Chiyoda-ku, Tokyo Mitsui & Co., Ltd. In-house (72) Inventor Mitsuo Kamata 2-17-22 Akasaka, Minato-ku, Tokyo Inside Japan Univ. Information System Co., Ltd. (56) Reference JP-A-59-6688 (JP, A) JP-A-61-52086 (JP, A) JP-A-62-141879 (JP, A)

Claims (1)

[Claims] 1. A center having a video text database in which page image data is stored and a host computer, a television video signal is supplied via a CATV line, and the page image data is supplied via a communication network. Each of the terminal devices is provided with a key input unit for generating request data, and the television image signal is supplied to one input and the page image data is supplied to the other input. And a switch means for selectively or mixing the television image signal and the page image data to supply to the display means, and a control means for controlling the switching operation of the switch means based on control data. The host computer is provided with the television image information supplied from the terminal devices via the communication network. A device control data generating means for generating device control data corresponding to the request data designating one of the request data and a reading means for reading the page image data corresponding to the request data from the video text database. The page image data is supplied from the host computer to the other input of the switch means of the terminal device where the request data is generated, and the device control data is used as the control data of the request data. The generated control signal is supplied to the control means of the terminal device, and the control means superimposes the page image data on the television image signal when the device control data indicates a superimpose display mode. do it Information systems and controlling said switch means to supply the serial display means.