JPH0779425A - TV with two-way communication function - Google Patents

Abstract

PURPOSE:To attain 2-way information communication by adding a MODEM to a television receiver main body and sending input information from an input circuit and a user ID of a storage circuit to a communication destination via the MODEM. CONSTITUTION:When the normal mode is designated by a remote controller 109 to an operation panel 107, a CPU 101 sets the usual mode and transfers the operation command entered by the panel 107 or the controller 109 to a television receiver 106. Furthermore, upon the receipt of a command of an information transmission mode, the CPU 101 sets the information transmission mode to make information exchange between the television receiver with 2-way communication function and an operation center. The user commands the information transmission mode from the operation panel 107 or the remote controller 109. When the CPU 101 detects the command of the information communication mode, the CPU 101 executes the 2-way communication program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television having a two-way communication function capable of communicating with a transmission source of television images such as a broadcasting station.

[0002]

2. Description of the Related Art A conventional television (receiver) only displays an image transmitted from a broadcasting station wirelessly or by wire, and information communication between the broadcasting station and a television user is generally unidirectional. Only. Although it is possible to make a call when the user wants to immediately convey some information to the broadcasting station, the broadcasting station cannot restrict the users who make a call. Also, unless the user gives his / her name, the broadcasting station cannot know the user's name.

[0003]

As described above, the present television is considered to be suitable for the user side, and can be said to be suitable for real-time information collection on the information service company side such as a broadcasting station. There wasn't.

Therefore, in view of the above points, an object of the present invention is to provide a television with a two-way communication function for improving the information transmission between the transmission source of the television image and the user.

[0005]

In order to achieve such an object, the invention of claim 1 is a television with a two-way communication function for displaying a television image received by radio,
A storage circuit for storing a user ID assigned to its own television, a modem for communicating with a partner station via a public line, an input circuit for inputting information, a user ID of the storage circuit and the input circuit And a communication control circuit for transmitting the information input from the modem to the modem.

According to a second aspect of the present invention, in addition to the first aspect, the user ID is different from the user IDs of other televisions having a two-way communication function, and the storage circuit, the modem and the communication control circuit are different from each other. It is characterized by being integrated on one chip.

According to a third aspect of the invention, in addition to the first aspect of the invention, a password input circuit for inputting a password previously assigned to the user, the input password and the user ID of the storage circuit are provided. It is characterized by further comprising a comparison circuit for performing coincidence comparison and a control circuit for activating the communication control circuit when a coincidence determination is obtained by the comparison circuit.

According to a fourth aspect of the present invention, the storage circuit, the modem and the communication control circuit according to the first aspect of the present invention,
The comparison circuit and the control circuit according to the invention of claim 3 are integrated on one chip.

According to a fifth aspect of the present invention, in addition to the first aspect of the invention, a password input circuit for inputting a password previously assigned to the user and a decryption of the input password are used for verification. A decryption circuit that creates an ID, a comparison circuit that performs a match comparison between the created verification ID and the user ID of the storage circuit, and operates the communication control circuit when a match determination is obtained by the comparison circuit. And a control circuit for controlling the control circuit.

According to a sixth aspect of the present invention, the storage circuit, the modem and the communication control circuit according to the first aspect of the present invention,
The decryption circuit, the comparison circuit and the control circuit according to the invention of claim 5 are integrated on one chip, and the modem of the invention of claim 1 or 2 is characterized in that: A telephone number storage circuit for storing the telephone number of the partner station, reading the telephone number of the telephone number storage circuit in accordance with an instruction from the communication control circuit, and automatically dialing the partner station. To do.

According to the invention of claim 8, in the invention of claim 7, the telephone number storage circuit is capable of storing a plurality of telephone numbers, and a specific number among the plurality of telephone numbers is subject to automatic dialing. It is characterized by further comprising a telephone number designating circuit for designating as.

According to a ninth aspect of the present invention, the information received by the modem from the partner station is encrypted information, and the modem further comprises a decryption circuit for decrypting the encrypted information. And

According to a tenth aspect of the present invention, the memory circuit, the modem and the communication control circuit of the first aspect of the invention, and the decryption circuit of the ninth aspect of the invention are integrated on one chip. To do.

According to an eleventh aspect of the present invention, a password input circuit for inputting a password previously assigned to the user according to the ninth aspect, and a comparison of coincidence between the input password and the user ID of the storage circuit are performed. It is characterized by further comprising a comparison circuit for performing and a control circuit for activating the communication control circuit when a coincidence determination is obtained by the comparison circuit.

According to a twelfth aspect of the present invention, the storage circuit, the modem and the communication control circuit of the first aspect of the invention, the decryption circuit of the ninth aspect of the invention, and the comparison circuit of the eleventh aspect of the invention. The control circuit is integrated into one chip.

According to a thirteenth aspect of the present invention, a password input circuit for inputting a password previously assigned to the user according to the ninth aspect of the invention and a decryption ID of the input password are created to generate a verification ID. A decryption circuit, a comparison circuit for performing a match comparison between the created verification ID and the user ID of the storage circuit, and a control circuit for activating the communication control circuit when a match determination is obtained by the comparison circuit. It is characterized by further including and.

According to a fourteenth aspect of the present invention, the storage circuit, the modem and the communication control circuit of the first aspect of the invention, the decryption circuit of the ninth aspect of the invention, and the decryption circuit of the thirteenth aspect of the invention. The comparison circuit and the control circuit are integrated on one chip.

According to a fifteenth aspect of the present invention, in the ninth or tenth aspect of the present invention, the modem has a telephone number storage circuit for storing the telephone number of the partner station, and in response to an instruction from the communication control circuit. It is characterized in that the telephone number of the telephone number storage circuit is read out and the other station is automatically dialed.

According to a sixteenth aspect of the present invention, in the fifteenth aspect of the present invention, the telephone number storage circuit can store a plurality of telephone numbers, and a specific number among the plurality of telephone numbers is subject to automatic dialing. It is characterized by further comprising a telephone number designating circuit for designating as.

[0020]

According to the first aspect of the present invention, the conventional television is provided with a two-way communication function using a modem, and the user ID is automatically transmitted so that the communication destination can identify the transmission source (user). To do.

In the inventions of claims 2, 4, 6, 10, 12, and 14, since the memory circuit is integrated with other circuits, the confidentiality of the user ID is maintained.

According to the third, fifth, eleventh and thirteenth aspects of the present invention, only a specific person who knows the password can communicate. Further, in the invention of claim 5, the user ID of the memory circuit
The password input by the user can be different, and the confidentiality of the user ID can be further enhanced.

According to the inventions of claims 7, 8, 15 and 16, since the modem has an auto-dial function, the dial operation by the user becomes unnecessary. Also, the telephone number of the partner station is protected by integrating the modem into one chip.

According to the invention of claim 9, the information from the partner station is encrypted, so that the information on the public line can be kept confidential.

[0025]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows the system configuration of an embodiment of the present invention. In FIG. 1, a television 100 with a two-way communication function is connected to an operation center 300 of an information service company (a broadcasting station in this embodiment) via a public line 200. The user uses the remote controller 109 to perform normal television operation of the television 100 with the two-way communication function, and also inputs information to be transmitted to the operation center 300. The input information is sent to the operation center 300 via the public line 200. A two-way communication function television 100 can be connected to a telephone (handset) 150.

The external appearance of the television 100 with the two-way communication function is shown in FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. FIG. 3 shows a circuit configuration of the television 100 with a two-way communication function.

In FIG. 3, the following circuits are common bus 11
It is connected to 0.

CPU 101: Read only memory (RO
M) executes the overall control of the device according to the system program stored in 102. Information transmitted and received between the circuits connected to the common bus 110 is read by the CPU 101 from the circuit on the transmission side and written in the circuit on the reception side. As will be described later, the CPU 101 operates as the communication control circuit of the present invention.

ROM 102: In addition to a system program to be executed by the CPU 101, data used in the execution of this program, for example, a character code string used as a display message and a font conversion table for converting the character code into a character pattern are stored in advance. is doing.

Random access memory (RAM) 10
3: The input data, the output data, and the calculation result of the CPU 101 are temporarily stored.

P (programmable) ROM 104: Saves and stores user ID (identification) information relating to the present invention.
The ID information is used for collation with the password input by the user and transmission to the communication destination.

Input / output interface (I / O) 10
5: Transfer the operation instruction from the CPU 101 to the modem 111. Further, the CPU 101 receives an instruction to switch between the modem 111 and the handset 150. In this embodiment, the modem 111 is external (CPU 101 in this case).
A modem having an automatic calling function for calling an instructed (broadcasting station) telephone in response to an instruction of a telephone number from

The television (TV) receiver main body 106 not only displays a television image, but also visually displays information received from the operation center 300 via the public line 200. The operation panel 107 is a television receiver body 106.
, But is connected to the common bus 110 in terms of circuit.

Operation panel 107: A power switch, a volume switch, and a numeric keypad are provided on the operation panel 107. The numeric keypad is used for channel selection of a broadcasting station in the normal mode, and is used as an input circuit of the present invention for inputting numerical information in the information transmission mode.

Receiver circuit 108: remote controller 1
The input signal transmitted by wireless from 09 is received. The remote controller 109 has an input switch similar to the operation panel 107, and wirelessly transmits an input signal.

The circuit configuration of the television receiver body 106 is shown in FIG.
Shown in. In FIG. 4, the television video signal received by the antenna 51 is selected by the tuner 52. The common bus 110, C determines which station the TV video signal is selected from.
It is instructed from the operation panel 107 or the remote controller 109 via the PU 101. The selected TV video signal is digitized by the tuner 52 and stored in the video memory 54 under the control of the display controller 55. The display controller 55 is a display 56.
In synchronism with the display scanning of 1, the television image signal for one screen is read from the video memory 54 and supplied to the display 56. As a result, the display 56 can display a television image. The video memory 54 has the CP of FIG.
The U101 is accessible and the information received from the operation center 300 of the broadcasting station is written in the video memory 54 by the CPU 101 in the form of a character pattern, whereby the television image and the character information can be displayed on the display screen of the display 56. It will be possible.

In such a structure, the operation panel 10
7 or when the normal mode is instructed from the remote controller 109, the CPU 101 sets the normal mode, and the operation panel 107 or the remote controller 10 is set.
The operation instruction input from 9 is transferred to the TV receiver 106. When the CPU 101 receives the information transmission mode instruction, the information transmission mode is set, and information is exchanged between the television 100 with a two-way communication function and the operation center 300 in a protocol procedure as shown in FIG.

The system configuration of the operation center 300 is shown in FIG. When connected to the television 100 with the two-way communication function, the sub computer 304 connected to the public line 200 receives the information sent from the television 100 with the two-way communication function and performs the information processing described below together with the host computer 303. The response information determined from the information processing result is transmitted from the sub computer 304 to the television 100 with the two-way communication function as a response. The ID information assigned to the television 100 with the two-way communication function is registered in advance in the host computer. , The host computer 302 transmits the sub computer 304 via the bus 305.
The ID information is received from and the processing of collating the ID information and detecting the specific ID information in the received ID information is executed. The keyboard 301 is the host computer 30
Input information for 3. CRT (display device) 302
Displays the information instructed by the host computer visually.

Information transmission processing performed in the system described above will be described with reference to the flowcharts of FIGS. 7 and 8. The flowchart of FIG. 7 is the CPU 1 of FIG.
01 shows the contents of the system program executed. This system program is written in a program language executable by the CPU 101 and stored in the ROM 102.
The flowchart of FIG. 8 is the sub computer 304 of FIG.
Indicates the contents of the system program executed by. This system program is also written in the programming language and stored in the sub computer 304. 7 and 8 are functionally represented for convenience of description. As an example of information transmission, a case where a user watches a quiz program broadcast on a television receiver and the user transmits a quiz answer to an operation center 300 of a broadcasting station will be described. The normal mode is initialized when the power is turned on.

The user uses the operation panel 107 or the remote controller 109 to select a program. CPU1
01, after confirming that the normal mode is set,
The selected channel information is instructed to the tuner 42 of the television receiver body 106 (S10 → S15 in FIG. 7). As a result, the television image of the quiz program of the designated channel is displayed on the display 56. Before the quiz, the broadcasting station inserts a telop prompting the start of the two-way communication program and a telop indicating the telephone number of the communication destination into the television image.

Looking at this telop, the user operates the operation panel 107 or the remote controller 109 to instruct the information transmission mode, for example, by operating two specific ten keys. When the CPU 101 detects that the information communication mode is instructed by determining the numerical value designated by the ten keys (YES determination in S10 of FIG. 7), it executes the bidirectional communication program after S20. CPU 101 is RO
A message (character code string) prompting the input of ID information is read from M102, converted into a character pattern, and then written in the video memory 54 of the television receiver body 106 to display the message on the display 56. When the user sees the display of this message, he / she uses the ten-key pad of the operation panel 107 or the remote controller 109 to input the password assigned to him / her (S20 in FIG. 7).

The CPU 101 uses the entered password as R
After the temporary storage in the AM 103, the ID information stored in the PROM 104 is read (S30 in FIG. 7). Next CPU 10
1 performs password comparison (comparison) on whether or not the password on the RAM 103 and the ID information match (S40 in FIG. 7). As a result of the password verification, if the match determination is not obtained, the control procedure of FIG. 7 is ended. As a result of the password collation, the procedure is advanced only when the coincidence judgment is obtained. The user inputs the telephone number of the communication destination from the operation panel 107 or the remote controller 109. CPU
Reference numeral 101 denotes an input / output telephone number, a calling command, and an ID number of a transmitting user, which are input / output to a modem 111.
And the public line 200 is connected via the handset 15
Switch from 0 to modem 111. As a result, after the modem 111 calls the sub computer 304 of the operation center 300 as in the conventional case, the CPU 101 serves as the communication control circuit of the present invention, and first, the PROM 1
The user I / D 04 is transmitted (S50 in FIG. 7). After that, the CPU 101 waits for a response from the sub computer 304 (loop processing of S60 of FIG. 7).

On the other hand, when the sub computer 304 of the broadcasting station receives the user ID in response to the call from the television 100 with the bidirectional communication function, the host computer 303.
The user ID is transferred to (S200 in FIG. 8). The host computer 303 collates whether this user ID is a previously registered ID and returns the collation result to the sub computer 304. When the result of the collation indicates that the user ID is not registered, the sub computer 304 responds by transmitting a disapproval signal indicating disapproval of subsequent communication to the television 100 with the two-way communication function (S220 → S225 in FIG. 8).

If the user ID indicates that the user ID has been registered as a result of the collation, the sub computer 304 performs predetermined communication with the television 100 having the two-way communication function, and then transmits an end signal, 8 is terminated (S2 in FIG. 8).
20 → S230 → S240 → S250).

Returning to FIG. 7, the television 1 with the two-way communication function is provided.
A CPU 101 of 00 is a sub computer 304 of a broadcasting station.
When a permission / non-permission signal is received from the modem 111 via the modem 111 (S60 in FIG. 7), when this signal indicates that communication is not permitted, the procedure is advanced to S100, and the modem 111 is instructed to disconnect the public line 200. Is performed (S70 → S10 in FIG. 7)
0). When the received signal indicates permission, the CPU 101 transmits the numerical information input from the operation panel 107 or the remote controller 109, for example, a quiz answer, to the sub computer 304 of the broadcasting station via the modem 111. The CPU 101 also displays the input numerical information on the display 56 of the television receiver body 106 ((S70 → S80 in FIG. 7)).

Thereafter, the CPU 101 operates as the communication control circuit of the present invention and transmits the input information until it receives the end signal from the sub computer 304 of the broadcasting station. or,
The information received from the sub computer 304 of the broadcasting station is displayed on the display 56 (loop processing of S80 to S90 in FIG. 7). Receive the end signal. The CPU 101 shuts off the public line and ends this procedure (S100).

As described above, in this embodiment, since the two-way communication between the user and the broadcasting station is possible, the broadcasting station programs such as a quiz program in which the viewer can participate are various. .

In the above-described embodiment, the circuit components shown in FIG. 3 are arranged on the printed circuit board. In this case,
The user ID of the PROM 104 or the system program of the ROM 102 may be illegally read by the ROM reader or the like. FIG. 9 shows a circuit configuration example of the second embodiment capable of preventing such fraud. First of FIG.
The same parts as those in the embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 9, CPU 101 and ROM 10
2, the RAM 103, the PROM 104, the I / O 105 and the modem 111 are integrated into a one-chip IC (integrated circuit) A, and this IC is arranged on a printed board. By thus integrating the ROM 102 and the PROM 104, it becomes impossible to read from the memory alone, and the confidentiality of the memory contents is protected.

Correspondence between the constituent features of the present invention and the circuits of the above-described embodiments is as follows. Operation panel 1
03 or the remote controller 109 functions as the input circuit of the invention of claim 1 and the password input circuit of claim 3. As is apparent from the above-mentioned processing, the CPU 101 operates as the communication control circuit according to claim 1, the comparison circuit and the control circuit according to claim 3, and the PROM 104 operates according to claim 1.
Since it operates as a memory circuit, the embodiment shown in FIG. 9 corresponds to the invention of claims 2 and 4.

A decryption circuit (claim 5) in the above-mentioned IC.
The decryption circuit of the invention of No. 1) 120
The circuit configuration of the embodiment is shown in FIG. CP in FIG.
U101, ROM102, RAM103, PROM10
4, I / O 105, decryption circuit 120 and modem 1
11 is integrated into an IC (integrated circuit) B of one chip, and this IC is arranged on a printed board. Therefore, 10
This circuit corresponds to the invention of claim 6. ROM like this
By integrating 102, the PROM 104, and the decryption circuit, it becomes impossible to read from the memory alone and obtain the encryption method, so that the stored contents of the memory are kept confidential.

In this example, the decryption circuit 120, which has received the password input from the operation panel 107 from the CPU 101, creates an ID for collation by performing, for example, XOR operation with a specific value stored inside. Then, the ID for collation is handed over to the CPU 101. CPU1
01 determines a match between the verification ID passed and the user ID of the PROM 104, and when the match is obtained, permits access to the operation center.
The processing procedure of the CPU 101 at this time is shown in FIG. In the process of S25 in the drawing, the input password is decrypted by the decryption circuit 120.
Processing for receiving the ID created from the decryption circuit 120, that is, the ID decrypted from the input password. Other processes are the same as those in the first embodiment shown in FIG. 7, and detailed description thereof will be omitted. In this example, PRO
The value indicated by the user ID of M104 and the value of the password input by the user are different. For this reason. Even PROM10
Even if the user ID of 4 is known to a third party and this value is used as a password for input, the device cannot accept this password. Furthermore, the encryption method can be changed for each TV by changing the input password and the specific value that is XORed in the decryption circuit 120 for each TV with the two-way communication function, and the input password of one TV can be changed to another TV. Even if it is used for, the other televisions do not accept the password.

In addition to the first embodiment, a user who decrypts the input password in the TV with the two-way communication function (application of the third embodiment) and the operation center side 300 receives from the TV with the two-way communication function. A fourth embodiment will be described in which the ID is decrypted.

FIG. 13 shows a processing procedure executed by the sub computer 304 (see FIG. 5) on the operation center 300 side. In this processing procedure, the same processing as that of the first embodiment of FIG. 8 is denoted by the same reference numeral, and only the processing different from that of the first embodiment will be described. FIG. 11 shows a protocol (procedure) for this purpose.

When the user wants to communicate with the operation center 300, the bidirectional communication program shown in FIG. 12 is activated and the password is input. The CPU 101 in the television with the two-way communication function executes the processing procedure of FIG.
When the decrypted password matches the user ID in the PROM 104, the modem 111 calls the operation center 300, and the user I of the PROM 104 is called.
D is transmitted to the sub computer 304 of the operation center 300.

Upon receiving the user ID, the sub computer 304 performs an XOR operation with the received user ID and a predetermined specific value (or the password value input from the keyboard 301) by the control procedure of FIG. 13, and outputs the bit of the operation result. A verification ID is created by reversing (Fig. 1
3 of S205). The created ID for collation is subjected to format check, for example, check that the numerical value indicated by this ID is within a predetermined numerical range. The verification ID that passed the format check is the host computer 30.
It is used to check whether or not it is registered in No. 3 (Fig. 13).
S210). Based on the result of this collation, access to the television with the two-way communication function is determined on the operation center 300 side (S220 in FIG. 13).

In this example, attention is paid to the difference between the user ID (the ID stored in the PROM 104) transmitted from the television with the two-way communication function and the user ID registered in the host computer 303 of the operation center 300. I want to be done. Therefore, even if the user information is retrieved from the host computer 303 by operating the keyboard 301 on the operation center 300 side, the user ID of the TV with the two-way communication function is not known and the operation of the TV with the two-way communication function is illegally performed. I can't.

Besides the above embodiment, the following example can be realized.

1) Information transmitted from the side of the television 100 with the two-way communication function through the public line includes answer to the quiz, song program examination result, news questionnaire, sports score prediction, mail-order purchase product number, etc. Can be considered. Further, for the pay service, the credit number of the user is registered in the host computer 303 side of the operation center.

2) The circuit configuration of the television 100 with the two-way communication function is not limited to that shown in FIG. 3, and the design can be changed within the scope shown in the claims. For example, the public line may be a telephone line or a digital communication line based on ISDN.

3) As the processing using the user ID on the operation center 300 side, in addition to ID collation, selection of a specific user ID and database search using the user ID as a keyword can be considered.

4) In this embodiment, the ID of the user is registered in advance on the broadcasting station side and the ID verification is performed. However, the user can also register the ID. In this case, the information indicating the registration is transmitted from the television with the two-way communication function.

5) The modem 111 of the first to fourth embodiments can be provided with a known auto-dial function. In this case, a telephone number storage circuit capable of storing a plurality of telephone numbers is provided in the modem, and when a communication instruction is received from the CPU 101, the telephone number to be auto dialed is read from the telephone number storage circuit. This example corresponds to the invention of claim 7.

When a single telephone number is stored in the telephone number storage circuit, the telephone number is used as it is for auto dialing. When storing a plurality of telephone numbers, the CPU 101 gives an instruction for a specific telephone number to be used for auto dialing.

At this time, manual instructions and automatic instructions can be considered for the instruction of the specific telephone number to the CPU 101. In the case of a manual instruction, the operation panel 107 or the remote controller 109 side instructs the CPU 101 to enter a telephone number setting mode for auto dialing, and in this mode, the user inputs a telephone number from the operation panel 107 or the remote controller 109. To do. CPU 101 transmits the input telephone number to modem 111. The transmission time of the telephone number, that is, the registration time of the telephone number in the telephone number storage circuit in the modem may be either the time when the communication with the partner station is performed or the time before the communication.

The automatic instruction of the telephone number is performed as follows. In the telephone number storage circuit in the modem, in addition to the telephone number, the correspondence relationship with the channel of the television broadcasting station is stored in a table state. When the bidirectional communication program is activated, the CPU 101 checks the channel of the currently selected broadcasting station and informs the modem 111 of the specific telephone number in the form of channel information. The modem 111 reads out the telephone number corresponding to the channel information from the telephone number storage circuit and automatically dials it. This example corresponds to the invention of claim 8.
In the above example, the telephone number of the partner station is kept confidential by the modem being integrated into one circuit together with other circuits.

Further, as a method for the CPU 101 to check the set channel of the television, a method of internally storing the channel instruction of the operation panel 107 or the remote controller 109 and a method of currently setting from the TV receiver main body 106 side are used. The method of receiving the existing channel can be considered.

Further, in the above example, the modem 111 automatically dials to the broadcasting station side when the two-way communication program is activated. However, after the program is activated, the user automatically dials the time (instruction to execute auto dialing). Of course, the operation panel 107 may be used.

6) The sub-computer 304 of the operation center 300 encrypts the transmission information (the partner station of claim 1), or transmits it to the television 100 with a two-way communication function using the already encrypted information. You may In this case, for example, the modem 111 and the I / O
A decryption circuit is connected between 105 and the bus 110 to decrypt the information received from the sub computer 304. As the decryption method, a well-known method different from the password decryption method may be used. Further, when the miniaturization of the device is prioritized, it can be used in common with the password decryption circuit 120. The above example corresponds to the invention of claim 9, and the example in which the information decryption circuit of the partner station is added to the circuit group A or B of FIGS. 9 and 10 to be integrated on one chip corresponds to claim 10. . In addition, an example in which the password collating function, the decryption function for the encrypted password, the modem auto-dial function, and the auto-dial number designating function described above are respectively incorporated into one chip corresponds to the inventions of claims 11 to 16. To do.

[0071]

As described above, according to the present invention,
Conventionally, information can be transmitted in only one direction in a television, and in addition to bidirectional information communication, various new information can be transmitted via the television. In addition, since communication between specific users and broadcasting stations is possible, new media functions such as TV-based mail-order sales functions and program broadcasting by two-way communication via TV and telephone lines are provided. it can. Further, the confidentiality of the user ID used for communication is further enhanced. Further, since the modem has an auto-dial function, the dial operation by the user is unnecessary. Also, the telephone number of the partner station is protected by integrating the modem into one chip. Furthermore, communication information from the partner station on the public line is also protected.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of an embodiment of the present invention.

FIG. 3 is a television 10 with a two-way communication function according to an embodiment of the present invention.
It is a block diagram which shows the circuit structure of 0.

4 is a block diagram showing a circuit configuration of the television receiver body 106 of FIG.

5 is a block diagram showing a system configuration of an operation center 300 of FIG.

FIG. 6 is an explanatory diagram showing a communication procedure of the present embodiment.

7 is a flowchart showing a control procedure executed by a CPU 101 of FIG.

8 is a flowchart executed by the sub computer 304 in FIG.

FIG. 9 is a block diagram showing a circuit configuration of a second embodiment.

FIG. 10 is a block diagram showing a circuit configuration of a third embodiment.

FIG. 11 is an explanatory diagram showing another communication procedure that replaces the communication procedure of FIG. 6;

FIG. 12 is a flowchart showing a processing procedure of the CPU 101 in the third embodiment.

FIG. 13 is a sub computer 304 in the fourth embodiment.
5 is a flowchart showing the processing procedure of step S1.

[Explanation of symbols]

 101 CPU 102 ROM 103 RAM 104 PRAM 105 I / O 106 Television Receiver Main Body 111 Modem 120 Decryption Circuit

Claims (16)

[Claims] 1. A television with a two-way communication function for displaying a television image received wirelessly, a storage circuit for storing a user ID assigned to its own television, and communication with a partner station via a public line. A bidirectional communication function, comprising: a modem for performing information, an input circuit for inputting information, and a communication control circuit for transmitting the user ID of the storage circuit and the information input from the input circuit to the modem. TV set. 2. The user ID is different from the user IDs of other televisions having a two-way communication function, and the storage circuit, the modem, and the communication control circuit are integrated on one chip. TV with two-way communication function described in. 3. A password input circuit for inputting a password pre-assigned to a user, a comparison circuit for performing a match comparison between the input password and a user ID of the storage circuit, and a match determination by the comparison circuit. The television with a two-way communication function according to claim 1, further comprising a control circuit which activates the communication control circuit when the above is obtained. 4. The storage circuit according to claim 1, the modem and the communication control circuit, and the comparison circuit and the control circuit according to claim 3, which are integrated on one chip. TV with communication function. 5. A password input circuit for inputting a password previously assigned to a user, a decryption circuit for producing a collation ID by decrypting the entered password, and the produced collation. And a control circuit for activating the communication control circuit when a coincidence judgment is obtained by the comparison circuit. A television with a two-way communication function according to Item 1. 6. The memory circuit, the modem and the communication control circuit according to claim 1, and the decryption circuit, the comparison circuit and the control circuit according to claim 5, which are integrated on one chip. A TV with a two-way communication function. 7. The modem has a telephone number storage circuit for storing the telephone number of the partner station, and reads the telephone number of the partner number storage circuit in accordance with an instruction from the communication control circuit to obtain the partner station. 3. The television with the two-way communication function according to claim 1, wherein the television is automatically dialed. 8. The telephone number storage circuit further comprises a telephone number designation circuit capable of storing a plurality of telephone numbers and designating a specific number among the plurality of telephone numbers as an object of auto dialing. The television with a two-way communication function according to claim 7, wherein. 9. The information received by the modem from the partner station is encrypted information, and further comprises a decryption circuit for decrypting the encrypted information. TV with two-way communication function described in. 10. A bidirectional communication function comprising the memory circuit according to claim 1, the modem and the communication control circuit, and the decryption circuit according to claim 9 integrated on one chip. TV with. 11. A password input circuit for inputting a password pre-assigned to a user, a comparison circuit for performing a match comparison between the input password and a user ID of the storage circuit, and a match determination by the comparison circuit. 10. The television with a two-way communication function according to claim 9, further comprising a control circuit that activates the communication control circuit when the above is obtained. 12. The storage circuit according to claim 1, the modem and the communication control circuit, the decryption circuit according to claim 9, and the comparison circuit and the control circuit according to claim 11. A TV with a two-way communication function, which is integrated in one chip. 13. A password input circuit for inputting a password previously assigned to a user, and a verification ID by decrypting the input password.
Decryption circuit that creates the ID and the created verification ID
10. A comparison circuit for performing a coincidence comparison between the user ID of the storage circuit and the user ID of the storage circuit, and a control circuit for activating the communication control circuit when a coincidence determination is obtained by the comparison circuit. TV with two-way communication function described in. 14. The storage circuit according to claim 1, the modem and the communication control circuit, the decryption circuit according to claim 9, and the decryption circuit, comparison circuit according to claim 13. A television with a two-way communication function, characterized by integrating a control circuit on one chip. 15. The modem has a telephone number storage circuit for storing the telephone number of the partner station, and reads the telephone number of the phone number storage circuit in response to an instruction from the communication control circuit, 11. The television with a two-way communication function according to claim 9, wherein the television is dialed automatically. 16. The telephone number storage circuit further comprises a telephone number designation circuit capable of storing a plurality of telephone numbers and designating a specific number among the plurality of telephone numbers as an object of auto dialing. 16. The method according to claim 15, wherein
TV with two-way communication function described in.