JPH0795314A - Picture transmitter - Google Patents

Abstract

PURPOSE:To clearly indicate a state of this side by sending a message representing the state of picture transmission to a 2nd picture transmitter when an incoming call request comes from the 2nd picture transmitter during the communication with a 1st picture transmitter. CONSTITUTION:A serial controller section 18 outputs picture data combined with communication control data to a MODEM 19 as communication data, the MODEM 19 modulates the data as analog picture data, which are sent to a 1st opposite picture transmitter via an NCU section 21. In this case, when a network connection requests comes from the 2nd picture transmitter via an ISDN line network and a system controller section 1 makes network connection via a CCU section 28. Then the system controller section 1 uses a D channel information message to send the state of transmission to other picture transmitter at present to the 2nd opposite transmitter and network connection of the ISDN line network is interrupted. Thus, the state of picture transmission can be sent in a voice message.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission device for communicating image information via a plurality of line networks.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a configuration of a conventional image transmission apparatus, and FIG. 4 is a block diagram showing details of a communication block of the image transmission apparatus shown in FIG. Less than,
An example of the image transmission sequence in such a configuration will be described.

First, when image transmission is performed using an analog telephone line network, the system controller unit 301
A network connection is made with a partner image transmission device that transmits images via the NCU unit 321.

When the network is connected, the system controller section 301 outputs the image data recorded in the image memory section 317 to the serial controller section 318 via the memory controller section 316. The serial controller unit 318 combines the image data with the communication control data and outputs it as communication data to the modem unit 319.
It is modulated as an analog wave by the modem unit 319, and the image data is transmitted to the partner image transmission device via the NCU unit 321.

Further, when image transmission is performed using the ISDN line, the system controller section 301 uses the CCU.
A network connection is made with a partner image transmission device that transmits images via the unit 328. When the network is connected, the system controller unit 301 outputs the image data recorded in the image memory unit 317 to the serial controller unit 318 via the memory controller unit 316.

The serial controller section 318 combines the image data with the communication control data and outputs the data as communication data, and the image data is transmitted to the partner image transmitting apparatus via the CCU section 328.

[0007]

However, in the above-mentioned conventional example, ISDN is used during image transmission through the NCU unit 321 using, for example, an analog line network.
When the network connection request for image transmission from the line is received, the image connection cannot be performed simultaneously between the analog line network and the ISDN line network, so the network connection request from the ISDN line network is not received. As a result, the calling side of the ISDN line network has a drawback that the state of the called-side image transmission device cannot be known.

According to the present invention, when there is an incoming call request from a second image transmission device using the second line network while communicating with the first image transmission device using the first line network, the above-mentioned first It is an object of the present invention to provide an image transmission device capable of clearly indicating the state of this side to the second image transmission device.

[0009]

According to the present invention, an incoming request is received from a second image transmission device using a second line network while communicating with a first image transmission device using the first line network. If there is, a means for transmitting a message notifying that the image is being transmitted to the second image transmission device by connecting to the second line network is provided to the second image transmission device. It is possible to specify the state.

Further, by providing means for generating a voice signal, it becomes possible to send the message as a voice message, and further, the second line network is an ISDN.
In this case, by providing the means for sending the message via the D channel and the means for recording the terminal information of the second image transmission device provided from the network, the image of the first line network can be obtained. After the transmission is completed, it is possible to make a call to the second image transmission device based on the terminal information.

[0011]

1 is a block diagram showing the system configuration of an image transmission apparatus according to a first embodiment of the present invention.
FIG. 3 is a block diagram showing details of a communication block of the image transmission device.

In FIG. 1, the system controller unit 1
Is for controlling the entire image transmission apparatus in this embodiment, and the address decoder unit 2 is for decoding the addresses of the respective control units and elements from the address bus output by the system controller unit 1.

The ROM section 3 is a memory that stores a program for driving the image transmission apparatus of this embodiment, and the RAM section 4 is a working memory used by the system controller section 1.

The operation panel section 5 is for operating the image transmission apparatus of this embodiment, and has a P interface (i
The / o) section 6 controls an input / output signal from the operation panel section 5. The camera unit 7 is for inputting an image to be image-transmitted, and the signal processing unit 8 is for processing an image signal from the camera unit 7.

The A / D conversion section 9 converts an image signal which is an analog signal into image data which is a digital signal, and the latch section 10 holds the image data from the A / D conversion section 9. Is.

The synchronizing signal generating section 11 generates a clock signal synchronized with the image synchronizing signal from the signal processing section 8, and the monitor section 12 outputs the image signal as an image. Further, the signal processing unit 13 is for processing an image signal.

The D / A converter 14 converts image data, which is a digital signal, into an analog image signal,
The latch unit 15 holds image data.

The memory controller section 16 controls the input / output of the image data in synchronization with the synchronization signal from the synchronization signal generation section 11, and the image memory section 17
Stores image data.

The serial controller unit 18 controls the communication of image data, and the modem unit 19 modulates / demodulates the communication data from the serial controller unit 18 into the frequency band of the analog telephone line network.

The changeover switch 20 switches the output signal to the analog telephone line network under the control of the system controller unit 1, and the NCU unit 21 is network-connected to the analog line network.

The voice generating section 22 outputs a voice message stored in advance, and the voice codec section 23.
Is for converting an audio signal into a digital signal and vice versa.

The microphone 25 is for inputting voice,
The amplifier section 24 amplifies a voice input from the microphone 25. The speaker 26 outputs voice, and the amplifier unit 27 amplifies voice output to the speaker 26.

The CCU unit 28 is a communication control unit for network connection with an ISDN network, and the line terminal 29 is a terminal for connecting an analog line network. Further, the line terminal 30 is I
This is a terminal for connecting the SDN line network.

Next, the sequence of image transmission in the above configuration will be described.

First, when image transmission is performed using an analog telephone line network, the system controller unit 1 is operated by the NC.
A network connection is established with the first partner image transmission device that transmits images via the U unit 11.

When the network is connected, the system controller section 1 outputs the image data recorded in the image memory section 17 to the serial controller section 18 via the memory controller section 16.

The serial controller section 18 combines the image data with the communication control data and outputs the data as communication data to the modem section 19, which is modulated as an analog wave by the modem section 19 and then transmitted via the NCU section 21 to the first partner image. Image data is transmitted to the transmission device.

At this time, when there is a network connection request from the second image transmission device via the ISDN line network, the system controller section 1 connects the network via the CCU section 28. At this time, the terminal information such as the transmission capability and the calling number of the second partner image transmitting apparatus, which is obtained from the D channel of the ISDN line network, is recorded in the RAM section 4 via the data bus.

Next, the system controller unit 1 sends to the second partner side transmission apparatus that it is currently transmitting with another image transmission apparatus using the information message of the D channel, and the network of the ISDN line network is transmitted. Terminate the connection.

After the image transmission with the first image transmission device using the analog line network is completed, the system controller unit 1 is based on the terminal information recorded in the RAM unit 4.
Can make a call to the ISDN line network via the CCU unit 28 to establish a network connection with the second partner image transmission device.

When a network connection request is made from the second image transmission device via the analog line network while the image transmission is being performed with the first image transmission device using the ISDN line, The system controller unit 1 performs network connection via the NCU unit 21.

Further, by switching the changeover switch 20, a voice message recorded in the voice generating unit 22 indicating that the image is being transmitted with another image transmitting apparatus is transmitted to the second partner via the NCU unit 21. Output to the side image transmission device and disconnect the network connection with the analog line network.

As described above, in the first embodiment, when the analog image network is used for image transmission with the first image transmitting device, the second image transmitting device using the ISDN line network transmits the image. When there is a network connection request, a message indicating that image transmission is currently being performed with another image transmission device is transmitted to the second image transmission device via the D channel, and the second image transmission device is further connected with the first image transmission device. It is possible to make a call to the second image transmission device after the image transmission of (2) is completed.

Further, when the ISDN line network is used for image transmission with the first image transmission device and the second image transmission device using the analog line network makes a network connection request, , A voice message can inform that the image is being transmitted with another image transmitting device.

Next, a second embodiment of the present invention will be described.

In the second embodiment, when an incoming request is received from a second image transmission device using the second line network while communicating with the first image transmission device using the first line network. , Second
The second image transmission apparatus is provided with means for performing image transmission with the second network, so that image transmission can be performed simultaneously with both the first and second image transmission apparatuses.

FIG. 5 is a block diagram showing the system configuration of the image transmission apparatus according to the second embodiment of the present invention.
FIG. 3 is a block diagram showing details of a communication block of the image transmission device.

As shown, the configuration of this second embodiment is
The configuration in which the changeover switch 20 and the sound generating unit 22 are eliminated from the configuration of FIGS. 1 and 2 of the first embodiment,
Since the other points are common to the first embodiment, the same reference numerals are given and the individual description is omitted.

Next, the sequence of image transmission in the above second embodiment will be described.

First, when image transmission is performed using the analog telephone line network, the system controller unit 1 sets the NC
A network connection is established with the first partner image transmission device that transmits images via the U unit 11.

When the network is connected, the system controller section 1 outputs the image data recorded in the image memory section 17 to the serial controller section 18 via the memory controller section 16.

The serial controller section 18 combines the image data with the communication control data and outputs it as communication data to the modem section 19, which is then modulated as an analog wave by the modem section 19 and the first partner image through the NCU section 21. Image data is transmitted to the transmission device.

At this time, when there is a network connection request from the second image transmission device via the ISDN line network, the system controller section 1 connects the network via the CCU section 28. Next, a call is made to the ISDN line network via the CCU unit 28 to establish a network connection with the second partner image transmission device.

Thereafter, similarly, the serial controller unit 18 combines the image data with the communication control data and transmits the image data as communication data to the second partner image transmitting apparatus via the CCU unit 28.

As described above, in the second embodiment, when the image transmission is performed with the first image transmission apparatus using the analog line network, the second image transmission apparatus using the ISDN line network is used. When there is a network connection request, it is possible to perform network connection with the second image transmission device and perform image transmission with the second image transmission device at the same time as image transmission with the first image transmission device.

[0046]

As described above, according to the first aspect of the present invention.
According to the above, when there is an incoming call request from the second line network during communication with the first image transmission device using the first line network, the second line network is connected to the second line network, and the second line network is connected. By providing the image transmitting apparatus with a message for notifying that the image is being transmitted, there is an effect that it is possible to clearly indicate the state on this side to the second image transmitting apparatus.

According to the second to fifth aspects of the present invention, by providing means for generating a voice signal, the message can be transmitted as a voice message, and the second line network can be an ISDN. In this case, by providing the means for sending the message via the D channel and the means for recording the terminal information of the second image transmission device provided from the network, the image of the first line network can be obtained. After the transmission is completed, there is an effect that it is possible to make a call to the second calling side based on the terminal information.

According to claim 6 of the present invention, an incoming call is received from a second image transmission device which uses the second line network while communicating with the first image transmission device using the first line network. When there is a request, a means for performing a network connection with the second line network and performing image transmission with the second image transmission device is provided.
There is an effect that image transmission can be performed simultaneously with both of the second image transmission devices.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing details of a communication block of the first embodiment.

FIG. 3 is a block diagram showing an overall configuration of a conventional example.

FIG. 4 is a block diagram showing details of a communication block of the conventional example.

FIG. 5 is a block diagram showing an overall configuration showing a second embodiment of the present invention.

FIG. 6 is a block diagram showing details of a communication block of the second embodiment.

[Explanation of symbols]

 1 ... System controller section, 2 ... Address decoder section, 3 ... ROM section, 4 ... RAM section, 5 ... Operation panel section, 6 ... P interface section, 7 ... Camera section, 8 ... Signal processing section, 9 ... A / D conversion unit, 10 ... Latch unit, 11 ... Synchronous signal generation unit, 12 ... Monitor unit, 13 ... Signal processing unit, 14 ... D / A conversion unit, 15 ... Latch unit, 16 ... Memory controller unit, 17 ... Image memory 18: Serial controller, 19: Modem, 20: Changeover switch, 21: NCU, 22: Voice generator, 23: Voice codec, 24, 27 ... Amplifier, 25 ... Microphone, 26 ... Speaker, 28 ... CCU section, 29, 30 ... Line terminal.

Claims (6)

[Claims] 1. An image transmission apparatus capable of connecting to a plurality of line networks, wherein when an incoming request is received from the second line network during communication with the first line network, the second line network is connected. , An image transmission device comprising means for sending a message to the calling side. 2. The image transmission device according to claim 1, further comprising means for generating a voice signal, wherein the message is transmitted as a voice message. 3. The image transmission apparatus according to claim 1, further comprising means for transmitting the message via the D channel when the second line network is ISDN. 4. The image transmission apparatus according to claim 1, further comprising means for recording terminal information of a calling side provided from the network when the second line network is ISDN. 5. The communication according to claim 1, wherein when the second line network is ISDN, the communication between the first line network and the means for recording the terminal information of the calling side provided from the network is completed. And a means for making a call to the second calling side based on the terminal information. 6. An image transmission device capable of connecting to a plurality of line networks, and when an incoming request is received from the second line network during image communication with the first line network, the second line network is connected to the network. And an image transmission device comprising means for performing image communication.