JPH10224465A - Communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wire-tapping in the zone of radio or cable communication and to protect the privacy of individual. SOLUTION: When a call originating side user inputs a keyword at call originating side equipment while using a microphone 6, card input part 12 or operation input part 13, a control part 17 performs the setting of encipher at a scramble circuit 8 based on the input keyword and afterward the equipment is prepared for communication by turning off a switch D and turning on switches B, C, E and H. At call terminating side equipment, on the other hand, the telephone number of call originating side received by a caller ID reception circuit 15 is displayed on an LCD 16 and when response operation is performed corresponding to a terminated call, a communication line 1 is captured by controlling a line interface 2. Then, equipment is prepared for communication by turning on switches B, C, E and F. In such a state, when the call originating side user inputs the keyword while using the microphone 6, card input part 12 or operation input part 13, after the control part 17 sets ciphering at a descramble circuit 3 based on the input keyword, equipment is prepared for communication by turning off switches B and D and turning on switches A and B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a communication device.

[0002]

2. Description of the Related Art Conventionally, in a communication device such as a cordless telephone or a portable telephone that performs communication with a base unit or a base station wirelessly, it is possible for a third party to eavesdrop on the wireless communication section. In some cases, radio signals are scrambled in order to obscure the contents of communication, and in wire communication, it is difficult to eavesdrop by a third party. Had not been put on.

[0003]

However, in scrambling in wireless communication as in the above-described conventional apparatus, it is necessary to make a predetermined setting in both terminals in advance, so that terminals connected by communication such as wire communication are required. If the communication device is shared by multiple users, it cannot be adapted if the communication device is not known, causing wiretapping damage in the section of wired communication. If another user responds even if the communication is from a partner you do not want, communication between that partner and the other user will be made, so personal privacy cannot be protected. There was a problem.

[0004] It is an object of the present invention to provide a communication device that can prevent eavesdropping in a section of wireless communication and wired communication and protect personal privacy.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a notifying means for notifying calling side information arriving at the time of an incoming call, and a keyword used for encryption or decryption. Input means, encryption means for encrypting voice or image data to be transmitted to the other device based on the keyword input by the input means, and transmission from the other device based on the keyword input by the input means Decoding means for decoding the decoded audio or image data.

According to a second aspect of the present invention, there is provided a detecting means for detecting whether or not the other party's apparatus is set to the answering machine mode, and the other party's apparatus is set to the answering machine mode based on the detection result by the detecting means. And control means for controlling the encryption means to release the encryption of the audio or image data when it is determined that the data is present.

Therefore, according to the first aspect of the present invention, in a state where the voice or image data transmitted from the partner device is scrambled, a keyword corresponding to the transmission side information notified by the notification means is input. When input by the means, the decryption means decrypts the voice or image data based on the input keyword, so that a keyword matching the keyword used for encryption of the encryption means in the partner device is input. Normal communication can be performed only when input is made by the means.

According to the second aspect of the present invention, when the detecting means determines that the other party's apparatus is set to the answering machine mode, the control means releases the encryption by the encrypting means, so that the normal operation can be performed. The business message can be recorded by the partner device.

[0009]

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

FIG. 1 is a schematic functional block diagram showing an electrical configuration of a communication apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing an example of operation control at the time of starting communication in the communication apparatus, and FIG. 9 is a flowchart illustrating another example of operation control at the time of starting communication in the communication device.

In FIG. 1, reference numeral 1 denotes a communication line connected to a partner device through a not-shown exchange, and 2 denotes a communication line.
And a line interface 3 for forming a communication path with the partner device via the communication line 1 that has been captured / released, and a data interface 3 for decoding incoming voice data using the communication path formed by the line interface 2. The scramble circuit 4 is an amplifier for amplifying audio data arriving using the communication path formed by the line interface 2 or the audio data decoded by the descramble circuit 3, and the amplifier 5 is for externally outputting the audio data amplified by the amplifier 4. , A microphone for collecting external audio, an amplifier for amplifying the audio data collected by the microphone, and a scramble circuit for encrypting the audio data amplified by the amplifier. The audio data encrypted by the scramble circuit 8 or the audio data The audio data is sent to the partner apparatus by using the communication path formed by the line interface 2.

Reference numeral 9 denotes digital data converted by a DSP 10 described later, while converting audio data arriving using a communication path formed by the line interface 2 or audio data decoded by the descrambling circuit 3 into digital data. Is converted to analog voice data and supplied to the scramble circuit 8 or the line interface 2. The conversion circuit 10 performs voice analysis / synthesis based on data stored in a memory 11 described later.
P and 11 are memories for storing data used for voice analysis / synthesis by the DSP 10.

Reference numeral 12 denotes a card input unit for reading information from an externally mounted IC card, 13 denotes an operation input unit including numeric keys used for inputting telephone numbers and the like and function keys for setting / releasing an answering machine mode, and the like. Is an incoming call detection circuit that detects an incoming signal coming from the communication line 1, 15 is a caller ID receiving circuit that receives incoming caller ID information (originating information), and 16 is a caller ID receiving circuit 15.
This is an LCD that displays the caller's telephone number and the like included in the caller ID information received by the user.

Reference numeral 17 denotes a line based on information read by the card input section 12, various instructions from the operation input section 13, incoming call detection by the incoming call detection circuit 14, and caller ID information received by the caller ID receiving circuit 15, and the like. Line capture / release control in interface 2, decoding control in descramble circuit 3, scramble circuit 8
, An audio analysis / synthesis control in the DSP 10, a display control in the LCD 16, and the like.

The line interface 2 and the amplifier 4 are connected between the line interface 2 and the descrambling circuit 3.
Between the line interface 2 and the descrambling circuit 3 and the conversion circuit 9; between the amplifier 7 and the conversion circuit 9; between the amplifier 7 and the scramble circuit 8 and the line interface 2; And conversion circuit 9
, A switch A, a switch B, a switch C, a switch D, a switch E, and a switch, respectively, between the conversion circuit 9 and the scramble circuit 8, and between the scramble circuit 8 and the line interface 2. An F, a switch G, and a switch H are provided, and each of the switches A to G is configured to be turned on / off by the control unit 17.

First, an example of the operation of the communication apparatus having the above configuration at the start of communication will be described with reference to the flowchart shown in FIG.

In the transmitting device, when the transmitting user operates the operation input unit 13 to give an instruction for scramble transmission (step F1), the control unit 17 turns on the switch D (step F2) and activates the microphone 6 by the microphone 6. The voice to be collected is input to the conversion circuit 9. After that, the user on the transmitting side causes the microphone 6 to collect the voice keyword (step F3). The control unit 17 recognizes the corresponding keyword based on the analysis result, and sets the decryption and encryption in the descramble circuit 3 and the scramble circuit 8 based on the keyword (step F4), The switch D is turned off and the switches B, C, E and H are turned on (step F5) to prepare for communication.

After the setting of the decryption and the encryption is completed, when the telephone number of the other party is inputted by the operation input unit 13 (step F6), the control unit 17 outputs a signal corresponding to the inputted telephone number. Is transmitted to the communication line 1 captured by the line interface 2, and dialing is performed (step F7).

On the other hand, in the receiving side device, the control unit 17 detects when the caller ID receiving circuit 15 detects caller ID information coming from the communication line 1 (step F1).
1) The caller's telephone number included in the received caller ID information is extracted and displayed on LCD 16 (step F).
12) When an incoming signal coming from the communication line 1 is detected by the incoming detection circuit 14 (step F1)
3) A ringer or the like (not shown) is sounded to notify an incoming call externally (step F14).

When the user on the receiving side responds to the incoming call notification and performs a response operation to the incoming call by picking up a handset constituted by the speaker 5 and the microphone 6 (step F15), the control unit 17 sets the line to the line. The interface 2 is controlled to capture the communication line 1 (step F16), and the switches B, C, E, and F are turned on (step F17) to prepare for communication.

In this state, the user on the receiving side recognizes that the sound emitted from the speaker 5 is scrambled, and operates the operation input unit 13 to give an instruction for descrambling (step F18). Then, the control unit 17 turns on the switch D (step F19) so that the voice collected by the microphone 6 is input to the conversion circuit 9, and thereafter, the user on the receiving side receives the telephone call on the calling side displayed on the LCD 16. When the voice keyword corresponding to the number is collected by the microphone 6 (step F20), the voice is converted into digital voice by the conversion circuit 9 and then analyzed by the DSP 10, and the control unit 17 recognizes the corresponding keyword based on the analysis result. Then, decryption and encryption settings in the descramble circuit 3 and the scramble circuit 8 are performed based on the keyword. With step F21), comprising switch B, and ON OFF to and switches A, the C and D (step F22) communication.

Therefore, according to the operation control described above, unless a keyword matching the keyword set in the calling device is set in the receiving device, the communication content cannot be known even if the call is answered. Even if eavesdropping from the communication line 1, the contents of the communication cannot be known.

In the above-described operation control, scrambling is performed only on information transmitted from the transmitting device. However, the present invention is not limited to this. For example, when a keyword is input in the receiving device. The switch F is turned off and the switch H is turned on so that the information encrypted by the scramble circuit 8 is sent out to the communication line 1. On the other hand, the information arriving via the communication line 1 is sent to the DSP 10 at the transmitting side device. When the control unit 17 determines that scrambling is performed based on the analysis result, the switch B is turned off and the switch A is turned on, so that the information decoded by the descrambling circuit 3 is externally output. By emitting sound, scrambled information is output from both the transmitting side device and the receiving side device. It may be capable of communicating over the Le.

Next, another example of the operation at the start of communication in the communication apparatus configured as described above will be described with reference to the flowchart shown in FIG. It is assumed that the receiving-side device has been previously set to the answering machine mode based on the operation of the operation input unit 13.

In the transmitting device, when the transmitting user operates the operation input unit 13 to give an instruction for scramble transmission (step F31), the control unit 17 turns on the switch D (step F32) and activates the microphone 6. The voice to be collected is input to the conversion circuit 9, and then the user on the transmitting side makes the microphone 6 collect the voice keyword (step F33). Analyzed by the control unit 17
Recognizes the corresponding keyword based on the analysis result, sets the decryption and encryption in the descramble circuit 3 and the scramble circuit 8 based on the keyword (step F34), and turns off the switch D and switches Turn on B, C, E, H (step F3
5) Prepare for communication.

After the setting of the decryption and the encryption is completed, when the telephone number of the other party is input by the operation input unit 13 (step F36), the control unit 17 outputs a signal corresponding to the input telephone number. Is transmitted to the communication line 1 captured by the line interface 2, and dialing is performed (step F37).

On the other hand, in the receiving side device, the control unit 17 determines that the caller ID receiving circuit 15 detects the caller ID information coming from the communication line 1 (step F4).
1) The caller's telephone number included in the received caller ID information is extracted and displayed on LCD 16 (step F).
42) And, the incoming signal coming from the communication line 1 is detected by the incoming call detection circuit 14 (step F43), and when the number of arrivals of the incoming signal reaches a predetermined number, the control unit 17 controls the line interface 2 To capture the communication line 1 (step F44).
Turn on C, G, and F (step F45) to prepare for sending a response message and recording a business message.
The control unit 10 controls the SP 10 to synthesize a response message registered in advance and send it to the communication line 1, and then performs an answering operation such as analyzing and storing a message message coming from the communication line 1 (step F46).

On the other hand, in the transmitting apparatus, the communication line 1
Is received by the DSP 10, and the control unit 17 determines that the partner apparatus is set to the answering machine mode based on the analysis result (step F).
38), the switch H is turned off and the switch F is turned on (step F39), whereby the scramble circuit 8 is turned on.
To transmit the information which is not encrypted to the communication line 1.

Therefore, according to the operation control described above, it is possible to cause the receiving-side device to record an unencrypted message when the receiving-side device is set to the answering machine mode.

In the above-described embodiment, the scramble transmission is instructed by the operation input unit 13 and then the keyword is input by the microphone 6. However, the present invention is not limited to this. Part 12
A keyword may be input by an information reading operation from a mounted IC card by the user or an operation by the operation input unit 13, or the keyword and the telephone number may be stored in association with each other, and the microphone 6, the card input unit 12, The start of the scramble operation and the automatic dial transmission may be performed by inputting a keyword through the operation input unit 13.

[0031]

As described above, according to the first aspect of the present invention, since scrambling is performed in the section of the wired line, even if a third party eavesdrops, the contents of the communication can be known. No, and unless a keyword matching the keyword set in the partner device is entered,
Even the responding user cannot know the contents of the call, so that the privacy of each individual can be protected even when the device is used by a plurality of users.

According to the second aspect of the present invention, when the partner device is set to the answering machine mode, the voice or image data is transmitted without being encrypted, so that the normal message can be transmitted to the partner device. You can make the side device record.

[Brief description of the drawings]

FIG. 1 is a schematic functional block diagram showing an electrical configuration of a communication device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of operation control at the time of starting communication in the communication device.

FIG. 3 is a flowchart showing another example of operation control at the start of communication in the communication device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication line 2 Line interface 3 Descramble circuit 4 Amplifier 5 Speaker 6 Microphone 7 Amplifier 8 Scramble circuit 9 Conversion circuit 10 DSP 11 Memory 12 Card input unit 13 Operation input unit 14 Incoming call detection circuit 15 Caller ID reception circuit 16 LCD 17 Control unit

Claims (2)

[Claims] 1. A notifying means for notifying the information of a calling side that arrives at the time of an incoming call, an input means for inputting a keyword used for encryption or decryption, and a transmission to a partner apparatus based on the keyword input by the input means. Encryption means for encrypting audio or image data to be transmitted, and decoding means for decoding audio or image data transmitted from the partner device based on the keyword input by the input means. A communication device characterized by the above-mentioned. 2. A detecting means for detecting whether the other party's device is set to an answering machine mode, and when it is determined that the other party's device is set to an answering machine mode based on a detection result by the detecting means. 2. The communication apparatus according to claim 1, further comprising control means for controlling said encryption means to release encryption of voice or image data.