JPS6161582A - Communications control system - Google Patents

Abstract

PURPOSE:To prevent the unlawful viewing and to reduce a construction cost by inputting only the information specified by a terminal controller among a piece of information from a center. CONSTITUTION:When services from a CAPTAIN system are received, an image receiver 61 is matched to an idle channel, and the request from a terminal controller 20 to a unit 10 is made through the operation of a key pad 51. The unit 10 connects a public telephone network 7, and displays CAPTAIN information on the receiver 61 through an in-house wiring network 19 and the unit 10 itself. In a communications control part 13, an input request signal is collated. When it is applicable to contract conditions, the information to be transmitted is multiplexed and transmitted. Simultaneously a selection signal is outputted to a converter part 12, and a video signal from a line wire divided wave synthesizing part 11 is so processed to be receivable by the receiver 61 corresponding to the terminal controller 20.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a communication control system, and more specifically, two-way communication between a CATV center and a terminal device installed in a home, and a text control system. The present invention relates to a communication control method that enables bidirectional communication between a center of a graphical information network (for example, CAPTAIN) system and a terminal device installed in a home.

b. Conventional technology A CATV center is connected to a terminal device installed in the home, such as a television receiver, via a CATV network, and information is selected according to commands from the television receiver and sent to the television receiver. CATV systems that provide output are already known. For example, CAT
The video signal from the V center is scrambled to prevent unauthorized viewing, and the signal is scrambled according to specific rules.
Since the video signal is transmitted to the ATV network, the terminal control device is equipped with a frequency conversion section (converter) and a descrambling section for restoring the disturbed video signal to its original state.

When a subscriber wants to watch a CATV program, he/she can specify the desired program by operating the keypad.
From among the various frequency-multiplexed information that is constantly sent out from the center, the terminal control device converts the frequency of the desired program information to an available channel on the television receiver.
Receive this.

In addition, the Captain System center is connected to a terminal device installed in the home, such as a television receiver, via the public telephone network, and information according to commands from the captain's connection device is output to the television receiver. It is also already known about the captain system.

Both of the above systems are about to be put into practical use, but they are based on the premise that they will be constructed independently of each other.

Problems to be Solved by the C1 Invention For example: - When attempting to use a CATV system and a captain system in a residence, the systems must be constructed independently. However, in general, people want to share the TV receiver as a terminal device in one residence, and there is a CATV&M for CATV in the residence.
Providing both a public telephone network for the captain and a public telephone network will increase the burden of in-house wiring work. Therefore, from the user's perspective, problems arise such as not being able to utilize resources effectively and imposing a heavy economic burden.

Regarding conventional CATV systems, although scrambled information is sent from the center to the CATV network, all information is sent as frequency multiplexed high-frequency signals to the inside of residences. Therefore, there is a problem in that even if terminal control devices and television receivers are added without permission and unauthorized viewing is attempted, it is extremely difficult to detect this. Furthermore, there are many noise sources in the house, but CATVt? 21 has entered directly into the residence,
In addition, since the converter in the terminal control device is also located inside the residence, the noise generated inside the residence is directly transmitted to the CATV'fJ4.
There is a problem in that the CATV uplink from the terminal control device to the center is disrupted.

Note that even if the amount of noise per terminal control device is small, the problem arises that the noise from all terminal control devices is superimposed on the uplink of the CATV network, which adversely affects the CATV center or other residential terminal control devices. there is a possibility.

Furthermore, in the case of the captain system, there is a one-to-one relationship between the captain adapter and the public telephone network, and by adding captain connection devices and television receivers, you can receive captain services on multiple television receivers. If this were to be done, it would be necessary to increase the number of public telephone networks, which would increase the cost and cause problems in that the wiring would have to be routed around the house, spoiling the aesthetics and increasing construction costs.

Means and operation for solving the d1 problem As a first embodiment of the present invention, as shown in FIG. I2 and a public telephone 1147, each connected to the in-house wiring network 19 at the other end, and in response to a command from the terminal control device 20, the CATV f
between M2 and the home wiring network 19 or the public telephone network 7
and the CATVm
CATV information converting means 101 that converts desired CATV information received from the terminal control device 20 into a predetermined signal form and sends it to the in-home wiring network 19 in response to other commands from the terminal control device 20; A communication control method is provided that includes a two-way communication control device 10 having the following.

That is, in this communication control method, a bidirectional transmission path is formed between a CATV network and a home wiring network, or between a public telephone network and a home wiring network, by a transmission path forming means in a two-way communication control device. CATV reception information and information from the public telephone network exist in the home wiring network, and the terminal device receives and outputs this information via the terminal control device. In addition, commands from the terminal control device are used to operate the transmission path forming means in the two-way communication control device via the in-house wiring network, and are also used to operate the CATV information conversion means provided in the two-way communication control device. On the other hand, only desired CATV information is converted into a signal and sent to the home delivery vA network.

As a second embodiment of the present invention, as shown in FIG.
0, a terminal device 61 connected to the home wiring network 19 via the terminal control device 20, and a CATV at one end.
line 2 and the public telephone network 7, and the home wiring network 1 at the other end.
9, and in response to a command from the terminal control device 20, a bidirectional transmission path is established between the CATV network 2 and the home wiring 419 or between the public telephone network 7 and the home wiring network 19. a two-way communication control device 10 that forms a
CA from C A T V kF4 present on 419
Receiving TV reception information and reception information from the public telephone network; signal processing is applied to at least one of these reception information, and either one is selectively sent to the terminal device 61; A control scheme is provided.

That is, in response to a command from the terminal control device 20, the communication control method is executed in the two-way communication control device 10 (:
A bidirectional transmission path is formed between the ATV network 2 and the home wiring 1119 or between the public telephone network 7 and the home wiring network 19. Furthermore, the terminal control device 20 subjects the CATV information in the home wiring network 19 or the signal from the public telephone network to signal processing as necessary, and outputs it to the terminal device 61 .

e. Examples Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 shows a configuration diagram of a communication control system that performs bidirectional communication as an embodiment of the present invention. In Figure 2, 1 is a CAT that has equipment for collecting, creating, storing, and transmitting various information to be serviced as a CATV system.
It is the center of the V system.

Reference numeral 2 denotes a C ATV cable installed and connected between the center 1 and the inside of each subscriber's residence 3. 41 and 42 are
This is a terminal control device connected to a CATV4r42 coaxial cable in the residence 3. Reference numerals 51 and 52 indicate keypads that are connected to the terminal control device 4 wirelessly or by wire and are used to specify and operate desired information. 61 and 62 are television receivers as terminal devices, which are connected to the CATVI 2 through terminal control devices 41 and 42. The television receivers 61 and 62 are for receiving general television broadcasts. In addition to the television receiver, a video tape recorder family H (VTR) may be used as the terminal control device.
Alternatively, a VTR may be connected via a television receiver. 7 is a public telephone network, and 81 and 82 are television receivers 61 and 6, which are connected to the Captain System.
This is a telephone that connects signal conversion to the public telephone network 7 so as to display an image on 2.

In this embodiment, terminal control devices 41 and 42 serve as terminal devices for television reception! 61, 62 etc. in parallel 2
CATVIIQ 2 has one system, but it is a public phone! Two systems of 717 are provided corresponding to the television receiver side.

The operation of the IM communication control system shown in FIG. 2 will be described below.

First, the operation of the CATV system will be described.

As mentioned above, the video signal from the center 1 is sent to the CATV network 2 after being scrambled to disturb the signal according to a specific rule in order to prevent unauthorized viewing. In addition to the converter, a descrambler is provided to restore the disturbed video signal to its original state. When a subscriber wishes to view a CATV program, he or she operates the keypads 51 and 52 to specify the desired program, and selects the desired program from among the various frequency-multiplexed information constantly being sent from the center 1. Information about the program you want on your terminal control device! 41 and 42, the frequency is converted to an available channel on television receivers 61 and 62, and this is received. Next, the operation when a subscriber receives services by the captain system will be explained.

First, tune the television receiver 61 to an available channel, and call the Captain Center via the public telephone network 7 using the telephone [91]. The captain center and telephone 91 are connected, and if there is a response from the captain center, a captain button (not shown) on the captain connection device 81 is pressed. In response to the request signal from the captain button, the telephone selector switch is disconnected from the telephone set 91, and the service menu from the captain center is displayed as an image on the television receiver a61 via the public telephone network 7 and the captain's connection device 81. The subscriber can receive the desired service using the numeric keypad of the captain's connection device W81 according to the screen display.

- That is, in this embodiment, the CATV system and the captain system are performed by the terminal control devices 41 and 42 and the captain connection devices 81 and 82. That is, when the CATV system is selected by the commands from the keypads 51 and 52, the television receivers 61 and 62 are connected to the center 1 via the terminal control devices 41 and 42 and the CATV4j42, Based on the desired CATV information (desired CATV information is selected by the terminal control devices 41, 42, signal processed and displayed on the television receivers [61, 62]).

In this case, captain information is not connected.

On the other hand, the television receivers 661 and 62 are connected to the captain connection devices 81 and 82 and the public telephone network 7.
If the CATV information is connected to the terminal control device 41,
42 to the television receivers a61 and 62.

The embodiment shown in FIG.
This is a relatively simple method that allows connection of either the CATV system or the captain system to one receiving system.
The aforementioned problems of CATV eavesdropping, noise, and the fact that the public telephone network is proportional to the receiving system still remain.

More preferred embodiments of the invention will be described below.

FIG. 3 shows a communication control system as an embodiment corresponding to the communication control system shown in FIG.

In FIG. 3, 1 is a center, 2 is cAmel, 3 is a residence, 51 and 52 are keypads, and 61 and 62 are television receivers 9 and telephones, which are the same as those shown in FIG. Furthermore, in Fig. 3, 7 is the public telephone network;
Reference numeral 19 indicates an in-house wiring network wired within the residence, 26 indicates a facsimile machine, and 27 is connected to various sensors installed within the residence for detecting abnormal conditions such as intrusion or fire, and utilizes the public telephone network 7. 10 is a two-way communication control device (hereinafter referred to as a unit).

As shown in FIG. 3, this unit 10 includes an outside line demultiplexing section 11, a converter section 12, an extension demultiplexing section 14, and a communication control section 13. The converter unit 12 has the same number of converters 12a as the terminal control devices 20 and 40 in the residence 3, but each converter 12a has a different output frequency. The television receivers 61 and 62 connected to the respective terminal control devices 20 and 40 are assigned to receive on different empty channels (channels other than those used for general television broadcasting). A code is assigned to each terminal control device 20, 40 for identification, and is added to the transmitted data.

The unit 10 also includes a telephone line control section 15, a telephone number storage section 16 for storing the telephone number of the management center, a disconnector 17, and a telephone changeover switch 18.

In the embodiment shown in FIG. 3, the external line demultiplexing unit 11,
The converter section 2, the extension branching and combining section 14, and the communication control section 13 constitute the CATV information exchange means 101 shown in FIG. , the telephone number storage section 16, the disconnector 17, and the telephone changeover switch 18 constitute the transmission path forming means 102. In this embodiment, the communication control section 13 and the extension branching/combining section 14 are common elements constituting both the CATV information exchange means 101 and the transmission path forming means 102 because of the closeness of the functions of both means and the difference in device configuration. This is due to optimization. However, without unifying the communication control unit 13, each means 101, 102
It will become clear from the operation description below that it can be formed as belonging to the .

In the configuration shown in FIG. 3, the in-home wiring network 19 is composed of, for example, a coaxial cable, is common to both CATV information and captain information, and has only one system. Similarly, there are two image receiving systems: 20°51.61.26
; 40,52.62 are provided, but public! J. The telephone network 7 is capable of receiving captain information for two lines with only one line. Therefore, only one phone [9 is sufficient.

The operation of the communication control system shown in FIG. 3 will be described below.

First, the operation of the CATV network 2 will be explained, focusing on the case where a transmission path is formed between the home distribution vA4M19 and between the public telephone 'fJ47 and the home wiring network 19.

When a subscriber receives captain service, he or she first sets the channel on the television receiver 61 to an empty channel. Next, the keypad 51 connected wirelessly or wired is photographed and delivered to the home from the terminal control device 20. 1lA
A request for captain service is made to the unit 10 through the transmission channel of JQ19. In unit 10,
Connect the public telephone network 7 and send the captain information through the unit 10 to the in-house wiring! 1419, the desired terminal control device 20, and the screen is displayed on the television receiver 61.

Further, the unit 10 will be explained in detail. The in-home wiring network 19 is connected to the extension demultiplexing unit 14, and the keypad 51
When a request for captain information is input, the terminal control device 20 receives this request signal, and the terminal control device 20 turns on the changeover switch in the terminal control device to receive captain information. Therefore, the television receiver 61 is
It is connected to the home wiring network 19. Further, the terminal control device 20 sends the request from the keypad 51 and the handset address to the unit 10 via the home delivery PA network 19. This request signal is demultiplexed by the extension demultiplexing unit 14 and applied to the communication control unit 13 .

The communication control unit 13 sends a control signal to the telephone line control unit 15, and the telephone line control unit 15 verifies whether the public telephone network 7 is being used by the telephone 9 or the like. If the telephone line control unit 15 is in use, the telephone line control unit 15 issues a stop command to the communication control unit 13, activates a known waiting function within the telephone line control unit 15, waits for the use of the line 7 to end, and then controls the telephone line. The unit 15 sends a control signal to the telephone changeover switch 18 to turn the telephone changeover switch 18 on to the B terminal. Therefore, the public telephone M47 is connected to the telephone line control section 15 side. After the connection, the communication control section 13 reads the telephone number of the captain center (not shown) from a RAM storing the telephone number and sends it to the telephone line control section 15.

The line control unit 15 dials the telephone number and connects to the captain center. If the captain center is busy, make a meeting and dial again. Captain 1 When connected to the buten center, the captain information is transferred to the telephone changeover switch 18, telephone line control section 15,
The signal is sent to the transmission communication path 19 of the in-home wiring network through the communication control section 13 and the extension demultiplexing section 14. The captain information is sent to the terminal control device 20 that matches the desired address, and the captain information is output to the television receiver 61 via the switch that is switched so that the captain information is output as described above.

Next, a case where a subscriber views a CATV program will be described. By operating the keypad 51, data communication is performed between the terminal control device 20 and the unit 10 via the home delivery Hj'A network 19, and a desired program is requested.

At this time, the terminal control device 20 turns on the changeover switch within the device 20 to the CATV information receiving side. Therefore, the television receiver 61 is connected to the home wiring network 19. Further, the terminal control device 20 sends the request from the keypad 51 and the handset address to the unit 10 via the home wiring network 19. That is, this request signal is demultiplexed by the extension demultiplexing unit 14 and applied to the communication control unit 13 .

In the communication control unit I3, the service contents that can be provided for each terminal control device, that is, the contract conditions, are registered in advance, and the input request signal is checked to determine whether or not it conforms to the contract conditions. If not, a signal indicating a message indicating that it is not included in the contract conditions is sent through the extension branch/combiner 14, the residential wiring network 19, and the terminal device 20, and the message is displayed on the television receiver 6.

If the request signal is compatible, the communication control unit 13 performs processing such as format conversion on the information to be transmitted to the CATV center 1 in the request signal, and then frequency-multiplexes it using the outside line demultiplexing/combining unit 11 and sends it to the CATV m 2. be done. At the same time, if it is program specification data, the communication control unit 1
3 outputs an information selection signal to the outside line demultiplexing/combining unit 11, and also determines which terminal control device 20.40 the request is from and sets the television receiver of the corresponding terminal control device in advance. A selection signal for frequency conversion to the 61 vacant channels is output to the converter section 12.

As a result, the selected converter 12a allocates the video signal from the outside line demultiplexing unit 11 to the television receiver 61 corresponding to the corresponding terminal control device 20 in the residence 3 so that the video signal can be received by the television receiver 61. The frequency of the vacant channel is converted to the frequency of the vacant channel and sent to the in-home wiring network 19. The terminal control device 20 accepts CATV information from the in-house wiring NY419, and when the above-mentioned keypad is operated, CATV4i'i+[
! The CATV information is output to the TV receiver a61 via a switch that is set so that the information is output to the TV receiver 61.
Output to. This makes it possible to view the desired CATV program.

The same applies to other terminal control devices 40 and television receivers 62.

As is clear from the above, bidirectional communication is possible.

Furthermore, as mentioned above, out of all the information sent from the center 1, only the information specified by the terminal control device 2° flows to the in-home wiring network 19, so it is impossible to eavesdrop on information other than the specified information. be. Therefore, there is no need to scramble the video signal and send it out from the center 1, and the terminal control device 20 also has a simple configuration without requiring a descrambling function.

Furthermore, since the frequency conversion is performed by the unit 10 all at once, each terminal control device 20 does not require a converter function, resulting in a simple configuration. If a terminal control device is added without permission, converter 12a corresponding to the added terminal control device
or converter 12 to accommodate
Since it is not registered in A, it is not possible to spy on it.

Furthermore, by installing the unit 10, especially through the intervention of the communication control unit 13, the CATV network 2 is isolated from noise within the residence 3. In other words, even if there is noise on the residential wiring M419, the communication control unit 13 changes the format (after performing data processing such as A), and then converts the data from the terminal device 20 into CA.
TVIM 2 Notes to be sent, CATVllii 2
2) Residential noise is not directly transmitted, and uplink C/N (Carrier/No. 1se) deterioration is prevented. Furthermore, since converter 12 sends a status signal to communication control section 13, when converter 1 has a device failure, communication control section 13 can detect the failure.

Next, 1 using a facsimile 26 as a terminal device.
The operation in this case is described below.

First, send telephone number 9 to the facsimile telephone of the destination party.
Connect using. When the connection is established, a response signal is received, and the send button on the keypad 51 is then pressed. When the communication control section 13 receives the transmission signal, it sends a control signal to the telephone line control section 15 and switches the telephone changeover switch 18 to the telephone line control section 15 side. The terminal control device 20 reads the information content set in the facsimile device 26 and sends it to the other party via the read formant change IAL unit 10. When setting the telephone 9 to receive data from the facsimile device 26, the receiver a port of the facsimile device 26 is pressed down using the keypad 51, and the telephone selector switch 18 is switched to the telephone line control side. When the facsimile signal is received, the terminal control unit 'a20 converts the data into a facsimile format and outputs it to the facsimile device 26.

The same applies even if the terminal device is a printer or the like instead of a facsimile device.

In this way, when the captain information etc. using the public telephone network 7 is sent manually to the residence 3, even if there are multiple television receivers or facsimile machines, all information such as captain information using the public telephone network 7 is transmitted through the in-house wiring network 19. Generally, you only need to use a TV receiver to receive the broadcast, so you only need one line from the public telephone network. No extra wiring is required inside the house, which does not detract from the aesthetics and reduces construction costs. Furthermore, when an antenna (not shown) for receiving general television signals is installed in the residence 3, a feeder connected to the antenna may be directly connected to the television receiver, and by tuning to a desired channel, TV programs can be viewed.

Next, a home security system using the public telephone network 7 will be described.

The home security control device 27 receives a detection signal when a sensor (not shown) detects various abnormalities,
If necessary, an error is displayed and an interrupt signal is sent to unit 1.
Send the telephone line control unit 15 to the telephone line controller 15 of
Insert it into the terminal side.

Then, the telephone number is read out from the telephone number storage section 16 that stores the telephone number of the management center, and the telephone number is dialed. After confirming the connection, the telephone line control unit 15 sends out the detected abnormality signal.

Furthermore, the telephone line control unit 15 constantly monitors the use and disconnection status of the public telephone network 7, so when the public telephone network 7 is unavailable, it sends security information to the communication control unit 13 and connects the CATV network 2. It can also be sent to center 1 through. . In this way, with regard to security, we have built a backup system due to the importance of early warnings.

In the explanation based on the above embodiment, CATV line 2 is used as a backup, but this
The cable 2 may be used at all times, and the public telephone network 7 may be used as a backup when the CATVwJ2 breaks down or is disconnected.

In the embodiment illustrated in FIG.
Although we have described the case where it is installed outside the home, it may also be installed inside the residence. Of course, the residence 3 does not only refer to the residence of a general family, but also refers to buildings such as offices and companies. The unit 10 is installed near or within these buildings.

Next, the communication system shown in FIG. 4 will be described.

In FIG. 4, the communication control system is connected to CATV4M2 and the public telephone network 7 at one end, and to the home wiring network 19 at the other end, and is connected to the terminal control bag! 20
, 40 in response to commands from the CAT
a two-way communication control II device (hereinafter referred to as a unit) that forms a bidirectional transmission path between the V network 2 and the home wiring network 19 or between the public telephone network 7 and the home wiring network 19;
10, terminal control device 20°40, television receiver 61,
62, keypad 51, 52, facsimile machine 26
,have. Further, the communication control system is provided with a home security control device 27 and a telephone 9 as in FIG.

In addition, each terminal control device includes a modem 21 that converts signals to be compatible with the in-house wiring network 19, a communication control section 22, and a terminal control device 20, as illustrated in the terminal control device 20. Equipped with a handset address 23 indicating an identification code, a V-RAM interface 24 as a storage conversion processing device, and a TV input selector switch 25,
It is connected to a facsimile machine Jt3 or a printer (not shown).

In the communication control system shown in FIG.
0 has at least the bidirectional route forming means as shown in FIG. A communication path with the network 19 is formed in the same manner as shown in FIG. 1 or 3.
- The same applies to the utility system. Therefore, the description of the transmission path forming operation will be omitted.

When a subscriber receives the character and graphic information network system, for example, the captain service, he or she first sets the channel on the television receiver 61 to an empty channel.
Next, by operating the keypad 51, the terminal controller 20 requests the unit JmlO for captain service through the transmission communication path of the in-home wiring network 19. Unit 10 connects to the public telephone network 7 and sends captain information to unit 1.
0, the in-house wiring 'M19, the desired terminal control device 20, and the screen is displayed on the television receiver 61.

To explain in more detail, the in-house wiring network 19 is connected to the unit 10.
When a request for captain information is input using the keypad 51, the communication control unit 22 receives this request signal and turns the TV input changeover switch 25 to the B terminal side.

Therefore, the television receiver 6 is connected to the home wiring network 19. Further, the communication control section 22 reads out the address assigned to this terminal control device 20 from the slave device address setter 23, converts the signal in the modem 21, and sends a request signal with the address added to the home wiring network 19. Unit) 1
0 establishes a two-way communication path between the public telephone network 7 and the home wiring network 19 as described above. As a result, captain information from the public telephone network 7 is sent to the home wiring network 19 via the unit 10. The captain information is sent to the modem 21 of the terminal control device 20 that matches the desired address and is received by the communication control unit 22.This = 1 - captain information is transmitted to the modem 21 of the terminal control device 20 that matches the desired address, and is received by the communication control unit 22.Due to the transmission speed, this = 1 - captain information is transmitted to the modem 21 of the terminal control device 20 that matches the desired address. Since the character signals are sent separately, the terminal control device 20 receives 1iI!
The image signal and character signal are combined into a pattern on the ii screen, and the patterned signal is sent to the V-RAM interface 24 for each screen. The V-RAM interface 24 performs formant conversion (converts each scanning line into analog information) so that it can be displayed on the cathode ray tube of the television receiver 61, and receives the television image via the B terminal of the television input selector switch 25. Send to machine 61.

In this way, the guidance (menu) for the captain's service is displayed on the screen, and the subscriber sequentially selects the service (information) he or she wishes to view from the menu by operating the keypad 51. The selection method and signal processing for displaying the selected service on the screen are the same as described above.

Next, the case of viewing a CATV program will be described.

)::1 terminal control device 2o shown in FIG. 4 is a unit controller.

A case where a CATV information conversion means is provided on the side as in the case shown in FIG. 1 will be explained. That is, CAT
When the V information is sent to the in-home wiring network 19, it is already in a signal format that can be output to the television receiver 61. 25 for communication control 22
By switching to the contact A side in response to a control signal from the terminal A, desired CATV information is output to the television receiver 61 via the home delivery & HM 19.

To explain in more detail, the in-house wiring y419 is connected to the extension branching and combining unit 14, and the keypad 51 connects the CATV
When a program viewing request is input, the communication control device 13
receives this request signal and turns on the TV input selector switch 25 to the A terminal side. Therefore, the television receiver 6
1 is connected to the in-house wiring network 19. Furthermore, the communication control unit 1
3 is the terminal control device 2 from the slave device address setting device 23.
The address assigned to 0 is read out, the signal is converted by the modem 21, and the ↑ request signal with the address added is sent to the home wiring network 19.

Incidentally, it is sufficient that the unit 10 has at least a transmission path forming means<, CATV1i'? +13 If there is no exchange means, the conventional amount t'J>, scramble information is sent from the CATV center 1, and each terminal side? ff
l Perform descrambling on the device. Therefore, a descramble processing circuit (not shown) is provided within the terminal control device.

The above also applies to other terminal control devices.

Another communication control system will be described with reference to FIG.

As shown in Fig. 5, the 3 control system is a combination of the communication control systems shown in Figs. 1 and 4, and the in-house wiring network 1
At least one terminal controller 20.9 connected to at least one terminal controller 20.9. A terminal device 61 connected to the home wiring network via the terminal control device, and a terminal device 61 connected to the CATV line 2 and the public telephone yi7 at one end, and connected to the home wiring network 19 at the other end, and connected to the home wiring network 19 from the terminal control device 20. transmission path forming means 10 for forming a bidirectional transmission path between the CA T VM 42 and the in-home wiring 41nl9 or between the public telephone M47 and the in-home wiring network 19 in response to a command;
2, and received CATV information on the CATV network 2 in response to other commands from the terminal control device 20 (:
The two-way communication control device 10 is equipped with a CATV information conversion means 101 that converts desired ATV information Ir1 into a predetermined signal format and sends it to the in-home wiring network 19.

These numbers correspond to the numbers shown in FIGS. 1 and 4. The in-house wiring in the terminal control device 20! CATV from said CATV1i12 on 1119
At least one of the received information and the received information on the public telephone network 7 is accepted, and one of them is selectively sent to the terminal device 61.

The operation of this communication control system is a combination of the operations of the control systems shown in FIGS. 1 and 3.

An embodiment of the communication control system shown in FIG. 5 is shown in FIG. FIG. 6 has a configuration that combines FIG. 3 and FIG. 4, and the symbols correspond to each other.

The functions and operations of each component are the same as described above.

f4 Effects of the Invention According to the present invention, as described above, CA T V 4
．． A bidirectional transmission path can be effectively and effectively formed between the home delivery vA network or the public telephone Nr4 and the home wiring network.

Further, according to the present invention, CATV1? Of all the information from I, only that designated by the terminal control device is converted to a specific frequency and sent to the in-house wiring network, so it is possible to prevent other information from being viewed and viewed in secret.

Further, according to the present invention, in-house noise is isolated by the communication control unit of the two-way communication control device and is not directly transmitted to the CATV network, so that C/N deterioration of the uplink does not occur.

Further, according to the present invention, even if terminal control devices and television receivers are added, services using the public telephone network can be selectively received on any television receiver.

Similarly, according to the present invention, since the public telephone network is connected to the two-way communication control device, unnecessary wiring is not required, the aesthetic appearance is not impaired, and construction costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a communication control system as a first embodiment of the present invention, FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 3 is an implementation of the communication control system shown in FIG. 1. 4 is a block diagram of a communication control system according to the second embodiment of the present invention, FIG. 5 is a block diagram of a communication control system according to the third embodiment of the present invention, and FIG. 6 is a diagram showing an example. 5 is a diagram showing an embodiment of the communication control system shown in FIG. 5. FIG. (Explanation of symbols) 1... CATV center, 2... CATV network, 7... Public telephone network, 9... Telephone, 10... Two-way communication control device, 11... Outside line branching Combining unit, 12... Converter unit, 7 13... Communication control unit, 14... Extension demultiplexing unit, 16... Telephone number storage unit, 17... Disconnector, 18... Telephone changeover switch, 19...In-house wiring network, 20.40...O1i terminal control device, 21...MODEM. 22... Communication control unit, 23... Handset address setting device, 24... V-RAM interface, 25... Switch, 26... Facsimile device, 27... Home security control device, 51 .52・
・Keypad, 61.62 ・TV receiver, 101 ・CATV'v111 conversion means, 102...
Transmission path forming means.

Claims (1)

[Scope of Claims] 1. At least one terminal control device connected to a home wiring network; and at one end connected to a CATV network and a public telephone network, and at the other end connected to the home wiring network, the terminal control device transmission path forming means for forming a bidirectional transmission path between the CATV network and the home wiring network or between the public telephone network and the home wiring network in response to a command from the CATV network; CATV that receives information and responds to other commands from the terminal control device.
A communication control system comprising: a two-way communication control device having a CATV information conversion means for converting desired information into a predetermined signal form and sending it to the in-home wiring network. 2. Each of the two-way communication control devices includes one set of CAT.
A V network, a public telephone network, and an in-home wiring network are connected, and the in-home wiring network includes information from the CATV information conversion means, a received signal from the public telephone network, and a signal from the terminal control device, 2. The communication control system according to claim 1, wherein the terminal control device extracts CATV information or information from the public telephone network in response to its own command from the in-home wiring network. 3. The CATV information exchange means responds to a command from the terminal control device and converts only desired information among the frequency-multiplexed high-frequency CATV information on the CATV network into a predetermined frequency corresponding to the command. The communication control method according to claim 1 or 2, characterized in that: 4. The communication control system according to any one of claims 1 to 3, which is connected to a center of a text/graphic information network system via the public telephone network. 5. The communication control system according to claim 1, wherein a security device is connected to the other end of the two-way communication control device, and the security device is connected to the public telephone network or the CATV network. 6. at least one terminal control device connected to the home wiring network; a terminal device connected to the home wiring network via the terminal control device; Each of the CATVs is connected to a wiring network in response to a command from the terminal control device.
a two-way communication control device that forms a two-way transmission path between a network and the home wiring network or between the public telephone network and the home wiring network; CATV reception information from an existing CATV network and reception information from the public telephone network are received, signal processing is performed on at least one of these reception information, and either one is selectively sent to the terminal device. A communication control method. 7. The communication control system according to claim 6, wherein the terminal control device accepts CATV information to which scramble processing has been applied and performs a corresponding predetermined descrambling process. 8. A CATV that responds to a command from the terminal control device to the two-way communication control device and converts only desired information among frequency-multiplexed high-frequency CATV information on the CATV network to a predetermined frequency corresponding to the command. The communication control system according to claim 6, wherein information conversion means is provided, and the terminal control device receives a signal from the CATV information conversion means and sends it to the terminal device without performing signal processing. . 9. Connected to a center of a character and graphic information network system via the public telephone network, and performing signal processing that allows the terminal control device to receive corresponding character and graphic information and output the character and graphic information to the terminal device. A communication control method according to any one of claims 6 to 8.