JPH0497684A - Picture transmitter - Google Patents

Abstract

PURPOSE:To eliminate monotonous and uniform performance of picture information or audio information relating to a transmission object by adding picture and audio information as event information relating to a calendar date to a picture and an audio signal being substantial transmission objects and sending the result. CONSTITUTION:The transmitter is provided with an event information generating circuit 10 comprising a discrimination circuit 11, a timer 12, an address generating circuit 13, an event memory 14, a video ROM 15, a switch 16 including a changeover contact selecting and outputting either of two inputs by a control signal and a voice synthesizer 17. Then event information corresponding to a calendar date is generated automatically, and picture and audio information being usual transmission objects, character or color information relating to them and picture and audio information as event information are added and the result is transmitted. Thus, monotonous and uniform performance as to a transmission object are avoided and attention to a transmission object is roused.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image transmission device, particularly an image transmission device that adds image and audio information as event information corresponding to a calendar day to image and audio signals that are originally intended for transmission. This invention relates to an image transmission device that can transmit images.

[Prior Art] Currently, with the standardization of image coding methods and the development of advanced information communication networks, various image transmission devices are being developed that encode and transmit images, audio, and control information to the other party. .

As a known document regarding these image transmission devices, for example, there is a "video telephone device" disclosed in Japanese Patent Application Laid-Open No. 194585/1999. The device described in the above-mentioned document and other similar image transmission devices focus on a phenomenon at a certain time and aim to transmit images, audio, and control information related to the phenomenon to the other party.

FIG. 2 is a block diagram showing an example of the configuration of a conventional image transmission device, and is an example of a video telephone device that enables two-way transmission. In FIG. 2, 100 is a video ROM (read only memory), 101 is a camera, and 102 is an A/D
Converter, 103 is a memory for transmission, 104A is a switch including a switching contact that selects and outputs one of two inputs according to a control signal, 105 is an encoder, 106 is a decoder, 107 is a memory for reception, 108 is a D/A converter, 10
9 is an image display monitor, 110 is a microphone, 111
is an audio CODEC (code/decoder with coder/decoder),
112 is a speaker, 113 is a control console, 114A is a conventional control processing circuit, 115 is a transmission control circuit, 11B is a line input/output terminal, and 117 is a line.

The operation shown in FIG. 2 will be explained.

First, the operation of transmitting and receiving an image signal will be explained. An image signal obtained from the camera 101 is converted into digital data by the A/D converter 102 and temporarily stored in the transmission memory 103. The image data stored in the transmission memory 103 is read out under the control of the control processing circuit 114A, encoded by the encoder 105 via the switch 104A, and introduced into the transmission control circuit 115.

When the device is in the transmission mode, the image data is time-division multiplexed with other data (audio data and control data) by the transmission control circuit 115, and is sent to the line 117 as transmission data via the line input/output terminal 11B. sent to. When the device is in the reception mode, the image data of the received data sent from the line 117 in a time-division multiplexed manner is separated through processing by the transmission control circuit 115 and decoded by the decoder 106. . The decoded image data is temporarily stored in the reception memory 107. Receiving memory 1
The image data stored in 07 is read out under the control of the control processing circuit 114A, converted into an image signal by the D/A converter 108, and the image information is restored and displayed on the monitor 109.

On the other hand, to explain the transmission and reception operations regarding audio information, the audio signal from the microphone 110 is the audio COD E
The audio data is encoded by C111 and time-division multiplexed by transmission control circuit 115, and when the device is in transmission mode, the audio data is sent to line 117 as transmission data. When this device is in the reception mode, the audio data is separated from the received data that is time-division multiplexed and sent from the line 117 through the processing of the transmission control circuit 115, decoded by the audio CODEC 111, and sent to the speaker. 11
2, the audio information is restored.

Next, the control processing of this device will be explained. The control processing circuit 114A controls each circuit within the device according to each transmission/reception mode, but in FIG. 2, only the main control path is shown and other incidental control paths are omitted. are doing. When this device is in transmission mode, the control processing circuit 114A
The switch 104A is activated in response to instructions from the control console 113.
It performs switching control such that part or all of the image information to be transmitted is switched to the contents of the video ROM 100. Video ROM 100 outputs image data according to the address signal given from control processing circuit 114A, and the output data is introduced into one contact of switch 104A. Normally, the contacts a and C of the switch 104A are connected, but when there is an operation instruction to display image data stored in the video ROM 100, a control signal from the control processing circuit 114A connects the contacts b and c. The image data input to the encoder 105 can be switched.

Here, the image data stored in the video ROM 100 represents characters and color information related to the image information captured by the camera 101. For example, the image data stored in the video ROM 100 represents characters and color information related to the image information captured by the camera 101. The specific image data to be set is used. These image data are sent to the switch 104A, the encoder 105, and the transmission control circuit 11.
5 and line 117, it can be transmitted to the other party.

[Problems to be Solved by the Invention] In the conventional image transmission device having the above configuration, among the image information to be transmitted, especially the image data stored in the video ROM, specific information related to the image information to be transmitted is These image data are characters or color information, and once these image data are determined in advance, they are used without being changed. Therefore, there is a problem in that the transmitted image information is monotonous or uniform with no change over time.

Furthermore, attempts have been made in the past to transmit time-related information such as ``what hour and minute'' or ``what day of the week,'' but simple time-related information is information that can be easily obtained by other means, so it cannot be used as transmission information. The degree of importance is low, and simply adding time-related information does not eliminate the unity or uniformity of transmitted image information.

The present invention was made in order to solve such problems, and it eliminates the monotony or uniformity of image information or audio information related to the transmission target, and transmits images and audio as event information corresponding to calendar days. An object of the present invention is to obtain an image transmission device capable of transmitting information by adding information to images and sounds to be transmitted.

Means for Solving Problem C] The image transmission device according to claim 1 is an image transmission device that transmits and receives images and audio signals via a communication line, and includes A/D conversion for quantizing the image signal to be transmitted. a transmission memory that stores the quantized image data, an encoder that encodes the quantized image data, a decoder that decodes the received encoded image data, and a transmission memory that stores the quantized image data; a receiving memory that stores the image data read from the receiving memory, a D/A converter that converts the image data read from the receiving memory into an analog image signal, and a D/A converter that encodes the audio signal to be transmitted and decodes the received audio signal. a control console that includes operation buttons and indicator lights, a control processing circuit that outputs control signals to each device in this device based on operation signals from the control console, and control from the control processing circuit. Generates image and audio event information corresponding to the calendar date based on the signal,
and an event information generation circuit that generates an image and audio switching control signal, and an image data read out from the transmission memory and an audio signal to be transmitted, or the event information based on the switching control signal from the event information generation circuit. a switch that selects either the image data or the audio signal generated from the generation circuit and supplies it to the encoder and the audio CODEC, respectively; and encoded images output from the encoder, the audio CODEC, and the control processing circuit, respectively. data,
transmission control for multiplexing encoded audio data and transmission control data and transmitting the multiplexed data via the communication line; and receiving data via the communication line, and converting the received data into encoded image data, encoded audio data, and The apparatus is equipped with a transmission control circuit that performs reception control for separating reception control data and supplying the data to the decoder, audio CODEC, and control processing circuit, respectively.

The image transmission device according to claim 2 is an image transmission device that only transmits image and audio signals via a communication line, and includes an A/D converter that quantizes the image signal to be transmitted, and an A/D converter that quantizes the image signal to be transmitted; A transmission memory that stores image data, an encoder that encodes quantized image data, an audio encoder that encodes audio signals to be transmitted, a control console that includes operation buttons and indicator lights, and a control processing circuit that outputs control signals to each device in the device based on operation signals from the control console; and a control processing circuit that generates image and audio event information corresponding to a calendar day based on the control signals from the control processing circuit; and an event information generation circuit that generates an image and audio switching control signal, and an image data read out from the transmission memory and an audio signal to be transmitted, or the event information based on the switching control signal from the event information generation circuit. a switch that selects either the image data or the audio signal generated from the generation circuit and supplies it to the encoder and the audio encoder, respectively; and codes output from the encoder, the audio encoder, and the control processing circuit, respectively; and a transmission control circuit that performs transmission control for multiplexing encoded image data, encoded audio data, and transmission control data and transmitting the multiplexed data via the communication line.

The image transmission device according to claim 3 is an image transmission device that transmits and receives only image signals via a communication line, and includes an A/D converter that quantizes the image signal to be transmitted, and the quantized image data. a transmitting memory for storing the quantized image data, an encoder for encoding the quantized image data, a decoder for decoding the received encoded image data, and a receiving memory for storing the decoded image data. , converting the image data read from the reception memory into an analog image signal D
/A converter, a control console including operation buttons and indicator lights,
A control processing circuit that outputs control signals to each device in the device based on operation signals from the control console; and a control processing circuit that generates image event information corresponding to a calendar day based on the control signals from the control processing circuit; an event information generation circuit that generates a switching control signal; and an event information generation circuit that generates image data read from the transmission memory or image data generated from the event information generation circuit based on the switching control signal from the event information generation circuit. a switching device that selects one of them and supplies it to the encoder; and a transmission control that multiplexes encoded image data and transmission control data respectively output from the encoder and the control processing circuit and transmits the same through the communication line. and a transmission control circuit that receives data via the communication line, separates the received data into encoded image data and reception control data, and performs reception control to supply each to the decoder and control processing circuit. It is prepared.

[Function] In the invention according to claim 1, in the image transmission device that transmits and receives image and audio signals via a communication line, the A/D converter quantizes the image signal to be transmitted, and the transmission memory quantizes the image signal to be transmitted. Store quantized image data. The encoder encodes the quantized image data, and the decoder decodes the received encoded image data. A reception memory stores the decoded image data, and a D/A converter converts the image data read from the reception memory into an analog image signal. The audio CODEC encodes audio signals to be transmitted and decodes audio signals received. The control console outputs operation signals from operation buttons, and lights up indicator lights in response to input status display signals. The control processing circuit outputs control signals to each device in the device based on the operation signals from the control console, and the event information generation circuit outputs images and sounds corresponding to the calendar day based on the control signals from the control processing circuit. Generates event information and image and audio switching control signals. Based on a switching control signal from the event information generation circuit, the switching device selects either the image data read from the transmission memory and the audio signal to be transmitted, or the image data and audio signal generated from the event information generation circuit. are selected and supplied to the encoder and audio CODEC, respectively. The transmission control circuit includes the encoder;
transmission control for multiplexing encoded image data, encoded audio data, and transmission control data respectively output from the audio CODEC and the control processing circuit and transmitting the same via the communication line; and receiving the data via the communication line. , the received data is separated into coded image data, coded audio data, and reception control data, and the data is sent to the decoder and audio CODE, respectively.
C and reception control for supplying to the control processing circuit.

In this way, the image and audio information independently generated by the event information generation circuit as event information corresponding to a calendar day can be added to the image and audio signals to be transmitted and transmitted.

In the invention according to claim 2, in the image transmission device that only transmits image and audio signals via a communication line, the A/D converter quantizes the image signal to be transmitted, and the transmission memory is configured to quantize the image signal to be transmitted. The image data that was created is stored. The encoder encodes the quantized image data, and the audio encoder encodes the audio signal to be transmitted. The control console outputs operation signals from operation buttons, and lights up indicator lights in response to input status display signals. The control processing circuit outputs control signals to each device in the device based on the operation signals from the control console, and the event information generation circuit outputs images and sounds corresponding to the calendar day based on the control signals from the control processing circuit. Generates event information and image and audio switching control signals. Based on a switching control signal from the event information generation circuit, the switching device selects either the image data read from the transmission memory and the audio signal to be transmitted, or the image data and audio signal generated from the event information generation circuit. are selected and supplied to the encoder and speech encoder, respectively. The transmission control circuit receives encoded image data output from the encoder, audio encoder, and control processing circuit, respectively;
Transmission control is performed to multiplex encoded audio data and transmission control data and transmit them via the communication line.

In this way, image and audio information independently generated from the event information generation circuit as event information corresponding to a calendar day can be added to the image and audio signals to be transmitted and transmitted.

In the invention according to claim 3, in an image transmission device that transmits and receives only image signals via a communication line,
The /D converter quantizes the image signal to be transmitted, and the transmission memory stores the quantized image data. The encoder encodes the quantized image data, and the decoder decodes the received encoded image data. A reception memory stores the decoded image data, and a D/A converter converts the image data read from the reception memory into an analog image signal. The control console outputs operation signals from operation buttons, and lights up indicator lights in response to input status display signals. The control processing circuit outputs control signals to each device in the device based on the operation signal from the control console, and the event information generation circuit outputs image event information corresponding to a calendar day based on the control signal from the control processing circuit. and generates an image switching control signal. The switch selects either the image data read from the transmission memory or the image data generated from the event information generation circuit and sends it to the encoder based on a switching control signal from the event information generation circuit. supply The transmission control circuit multiplexes the encoded image data and transmission control data output from the encoder and the control processing circuit, respectively, and transmits the multiplexed data via the communication line, and receives the data via the communication line. ,
Reception control is performed by separating the received data into encoded image data and reception control data and supplying them to the decoder and control processing circuit, respectively.

In this way, image event information independently generated from the event information generation circuit as event information corresponding to a calendar day can be added to the image signal to be transmitted and transmitted.

[Embodiment] FIG. 1 is a block diagram showing a first embodiment of an image transmission device according to the present invention, and 101 to 103, 105 to 113
and 115 to 117 are exactly the same as the conventional device shown in FIG. In the figure, numeral 10 denotes an event information generation circuit according to the present invention, the details of which will be explained with reference to FIG. 104 is a switch incorporating two sets of switching contacts that select and output one of two inputs in response to a control signal, and 114 is a control processing circuit of the present invention.

The operation shown in FIG. 1 will be explained.

First, the image signal transmission and reception operations will be described. An image signal obtained by the camera 101 is converted into digital image data by the A/D converter 102, and is temporarily stored in the transmission memory 103. The image data stored in the transmission memory 103 is read out under the control of the control processing circuit 114 and introduced into one contact a of the switch 104. Since the contacts a and C of the switch 104 are normally connected, the image data read from the transmission memory 103 is encoded by the encoder 105 via the switch 104. When this device is in the transmission mode, the encoded data output from the encoder 105 is time-division multiplexed by the transmission control circuit 115, and then sent to the line 117 via the line input/output terminal 11B.
It is sent as transmission data to. When the apparatus is in the reception mode, the multiplexed reception data input from the terminal 11B via the line 117 is subjected to separation processing by the transmission control circuit 115 and separated into image data, audio data, and control data. After the image data is decoded by the decoder 106, it is temporarily stored in the reception memory 107. The image data stored in the receiving memory 107 is read out under the control of the control processing circuit 114, and is read out by the D/A converter 10.
8, the image information is converted into an image signal, and the image information is restored and displayed on the monitor 109.

On the other hand, to explain the transmission and reception operations regarding audio information, the audio signal extracted by the microphone 110 is input to the audio CODEC III via contacts df of the switch 104. Then, encoded audio data is generated by the encoding process of the audio CODEC 111, and the transmission control circuit 1
15 will be introduced. When the device is in the transmission mode, the audio data is multiplexed by the transmission control circuit 115 and sent as transmission data to the line 117 via the terminal 116. When the apparatus is in the reception mode, the multiplexed reception data input from the terminal 116 via the line 117 is separated into each data by the transmission control circuit 115, and the encoded audio data is input to the audio CODE C 111.

The audio COD E C 111 decodes encoded audio data and reproduces an audio signal. This reproduced audio signal is supplied to the speaker 112 and the audio information is restored.

The operations described above are the same as those of the conventional device shown in FIG.

In the present invention, an event information generation circuit 10 described below
outputs image data B1 as event information, an audio signal as event information, and a switch control signal C.

The image data B is sent to the contacts of the switch 104, the audio signal is sent to the contacts e of the switch 104, and the switch control signal C is used as a control signal to switch the contacts of the switch 104.
Each is supplied to a switch 104.

Next, control processing of the image transmission device according to the present invention will be explained. First, when this device is in transmission mode, the control processing circuit 1
14 receives operation signals from the control console 113, sends control data to the transmission control circuit 115, and controls the event information generation circuit 10 and various parts within the apparatus. Further, when the device is in the reception mode, control data separated by the transmission control circuit 115 is input to the control processing circuit 114.

The control processing circuit 114 determines the contents of the control data and controls the event information generation circuit IO1 control console 113 and each part within the apparatus. The control console 113 includes operation buttons and display lamps, and the button operation signals are input to the control processing circuit 114. The display lamp of the control console 11B is the control processing circuit 1
The display is controlled by a control signal from 14.

FIG. 3 is a detailed block diagram of the event information generation circuit according to the present invention, in which 11 is a discrimination circuit, 12 is a timer, and 13
1 is an address generation circuit; 14 is an event memory; 15 is a video ROM; 1B is a switch including a switching contact that selects and outputs one of two inputs according to a control signal;
7 is a speech synthesizer, and lO is an event information generation circuit constituted by the devices 11 to 17 above.

First, an overview of each device constituting the event information generation circuit 10 will be explained. The determination circuit 11 analyzes the control content of control data A input from the outside, and according to this control content,
A switch control signal C1 is output to the outside, and a switching signal 11a and an address signal 15a are output to the inside. The timer 12 outputs calendar information 12a according to the passage of calendar days. The address generation circuit 13 outputs address information A1 and A2 specifying the event data storage locations of the event memory 14 and the speech synthesizer 17 in accordance with the calendar information 12a supplied from the timer 12. At this time, the address generation circuit 13 is controlled to enable/disable the operation of the address generation circuit by the switching signal 11a outputted from the discrimination circuit 11.

The event memory 14 is a memory composed of a ROM or an IC memory card, and stores event information E. Then, event information E corresponding to address information A1 supplied from address generation circuit 13 is output. Here, event information E includes, for example, "National holiday", "March 8th is International Women's Day", "April 18th is Invention Day", "June 10th is Time Memorial Day", " This is various information about events that are held in accordance with days established in general society and industry, such as "July 7th is Moda" and "January 11th is Battery Day."

The video ROM 15 stores specific character or color information F, and the address information 1 output from the discrimination circuit 11
The information F corresponding to 5a is output.

The switch 1B is a switch that selects and outputs one of the two image data, and the information F outputted from the video ROM 15 is connected to its contact X, and the event information E outputted from the event memory 14 is connected to its contact. connected to y. Further, the contact switching is controlled by the switching signal 11a outputted from the discrimination circuit 11. Then, image data B is taken out from the contact point 2. Speech synthesizer 17
receives the address information A2 from the address generation circuit 13, and outputs audio event information corresponding to the address as an audio signal.

Next, the operation of the event information generation circuit IO will be explained. When this device is in the transmission mode and the control data A from the control processing circuit 114 in FIG. 1 includes control information requesting event display, the switch 16 is Switching is controlled so that the contacts y and z are connected, and at the same time this switching signal 1
1a sets the address generation circuit 13 to enable its circuit operation. At this time, the address generation circuit 13 generates address information A1 and A2 corresponding to the calendar information 12a inputted from the timer 12, and generates address information A1 and A2 corresponding to the event memory 14 and the speech synthesizer 17, respectively.
supply to. The event memory 14 and the audio synthesizer 17 output image data E and audio signals representing event information according to the address information A1 and A2. At the same time, the switch 104 control signal C output from the discrimination circuit 11 sets the contact connection of the switch 104 shown in FIG. do.

As a result, if the control information given from the control console 113 in FIG. 1 requests event display, this device can automatically include event information in the image information or audio information to be transmitted. Become.

When this device is in reception mode and the contents of the control data transmitted from the other party include an event display request, the image event information and audio information included in the transmitted image information are FIG. 4 is a block diagram showing a second embodiment of the image transmission device according to the present invention, in which only the image and audio signals are transmitted. This is an image processing device that performs In Figure 4, 10.10
1 to 105, 110, and 113 to 117 are exactly the same as in the case of the apparatus shown in FIG.

Reference numeral 120 denotes a voice encoder, and since this device does not receive voice, it is replaced with a voice encoder obtained by removing the voice decoding section from the voice COD E C111 in FIG.

In the operation shown in FIG. 4, the reception operation is removed from the transmission and reception operation shown in FIG. 1, and only the transmission operation is performed.

Therefore, the explanation of the operation will be omitted since it will be redundant.

FIG. 5 is a block diagram showing a third embodiment of the image transmission apparatus according to the present invention, which is an image processing apparatus that transmits and receives only image signals. In Figure 5, 1O1101~1
03.105 to 109.113 to 117 are exactly the same as the apparatus shown in FIG. Further, 104A is the same switch as in the case of the device shown in FIG.

The operation shown in FIG. 5 is an operation in which audio information is removed from the operation of transmitting and receiving image and audio information shown in FIG. 1, and only image information is transmitted and received. Therefore, the explanation of the operation will be omitted since it will be redundant.

The event information generation means and transmission means according to the present invention can be applied to products in a wide range of fields. In other words, in addition to videophone devices, remote monitoring image transmission devices, FAX devices,
It can be applied to still image transmission devices, moving image transmission devices, etc. In this case, by adding image and audio information as event information corresponding to the calendar date to the image and audio to be transmitted, it is possible to make the other party pay more attention to the transmission target. can.

In addition, if an IC card or the like that can be easily inserted and removed from the outside of the device is used in the event memory that stores event information, event information for each application can be changed with a one-touch card exchange, creating an extremely versatile image transmission device. can do.

Furthermore, even if only the means for generating event information is used, it can be
It can be applied to products in a wide range of fields, such as cameras, watches, and electronic notebooks, to arouse users' attention.

[Effects of the Invention] As described above, according to the present invention, event information corresponding to a calendar day is automatically generated, and image and audio information to be normally transmitted, as well as text or color information related thereto, are automatically generated. In addition to the above, image and audio information as the event information can be added and transmitted, making it possible to transmit a wide variety of information, making it compatible with highly information-oriented communications and reducing the monotony of conventional transmission targets. This has the effect of breaking down gender or uniformity and greatly arousing attention to the transmission target.

Furthermore, according to the present invention, even a transmitting image transmission device that only transmits images and audio can transmit the image and audio information as the above-described event information. Install a reliable image transmission device,
When configuring a system that receives all of the information transmitted at the center, it is possible to configure a low-cost, economical system, and also to be able to transmit a variety of information.

Further, according to the present invention, even an image transmission device that only sends and receives image information can add and transmit image information as the above event information, so by setting up a plurality of image-dedicated transmission devices, When configuring a system, it is possible to configure a low-cost, economical system, and also to be able to transmit a variety of images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a first embodiment of an image transmission device according to the present invention, FIG. 2 is a block diagram showing a configuration example of a conventional image transmission device, and FIG. 3 is a block diagram showing event information according to the present invention. A detailed block diagram of the generating circuit, FIG. 4 is a block diagram showing a second embodiment of the image transmission device according to the present invention, and FIG. 5 is a block diagram showing the third embodiment of the image transmission device according to the present invention. It is a diagram. In the figure, 10 is an event information generation circuit, 11 is a discrimination circuit, 12 is a timer, 13 is an address generation circuit, 14 is an event memory, and 15.100 is a video ROM. 16, 104, 104A are switches, 17 is a speech synthesizer, 101 is a camera, 102 is an A/D converter, 103 is a transmission memory, 105 is an encoder, 106 is a decoder, 10
7 is a receiving memory, 108 is a D/A converter, 109 is a monitor, 110 is a microphone, 111 is an audio CODEC
. 112 is a speaker, 113 is a control console, 114 is a control processing circuit of the present invention, 114A is a conventional control processing circuit, 115
11B is a transmission control circuit, 11B is a line input/output terminal, 117 is a line, and 120 is a voice encoder. Patent Applicant: Oki Electric Industry Co., Ltd. Representative Patent Attorney: Satoshi Suzuki Akira Reno

Claims (3)

[Claims] (1) An image transmission device that transmits and receives image and audio signals via a communication line includes an A/D converter that quantizes the image signal to be transmitted, and a transmission memory that stores the quantized image data. , an encoder that encodes quantized image data, a decoder that decodes the received encoded image data, a reception memory that stores the decoded image data, and a readout from the reception memory. a D/A converter that converts the image data into analog image signals, an audio CODEC that encodes audio signals to be transmitted and decodes audio signals that are received, and a control console that includes operation buttons and indicator lights; A control processing circuit that outputs control signals to each device in the device based on operation signals from the control console, and a control processing circuit that generates image and audio event information corresponding to a calendar day based on the control signals from the control processing circuit. , and an event information generation circuit that generates an image and audio switching control signal, and an image data read out from the transmission memory and an audio signal to be transmitted, or the event based on the switching control signal from the event information generation circuit. a switch that selects either the image data or the audio signal generated from the information generation circuit and supplies the same to the encoder and the audio CODEC, respectively; and the encoder output from the encoder, the audio CODEC, and the control processing circuit, respectively; transmission control for multiplexing image data, encoded audio data, and transmission control data and transmitting the multiplexed data via the communication line; and receiving data via the communication line and converting the received data into encoded image data and encoded audio. and a transmission control circuit that performs reception control to separate data and reception control data and supply them to the decoder, audio CODEC, and control processing circuit, respectively, and is independent from the event information generation circuit as event information corresponding to a calendar day. 1. An image transmission device characterized in that image and audio information generated in an image is added to image and audio signals to be transmitted and transmitted. (2) In an image transmission device that only transmits image and audio signals via a communication line, an A/D converter that quantizes the image signal to be transmitted and a transmission memory that stores the quantized image data. an encoder that encodes quantized image data; an audio encoder that encodes audio signals to be transmitted; a control console that includes operation buttons and indicator lights; A control processing circuit that outputs control signals to each device in this device, and a control processing circuit that generates image and audio event information corresponding to a calendar day based on the control signals from the control processing circuit, and a switching control signal for images and audio. an event information generation circuit that generates an event information generation circuit; and image data read from the transmission memory and an audio signal to be transmitted based on a switching control signal from the event information generation circuit, or image data generated from the event information generation circuit. and a switch that selects and supplies one of the audio signals to the encoder and the audio encoder, respectively, and encoded image data and encoded audio data output from the encoder, the audio encoder, and the control processing circuit, respectively. and a transmission control circuit that performs transmission control to multiplex transmission control data and transmit it via the communication line, and generates images and sounds independently generated from the event information generation circuit as event information corresponding to a calendar day. An image transmission device characterized in that information is added to image and audio signals to be transmitted. (3) In an image transmission device that transmits and receives only image signals via a communication line, an A/D converter that quantizes the image signal to be transmitted, a transmission memory that stores the quantized image data, an encoder that encodes quantized image data; a decoder that decodes the received encoded image data; a reception memory that stores the decoded image data; and a reception memory that stores the decoded image data; a D/A converter that converts image data into analog image signals, a control console that includes operation buttons and indicator lights, and a control that outputs control signals to each device in the device based on the operation signals from the control console. a processing circuit; an event information generation circuit that generates event information of an image corresponding to a calendar day based on a control signal from the control processing circuit; and an image switching control signal; and switching from the event information generation circuit. a switch that selects either the image data read from the transmission memory or the image data generated from the event information generation circuit and supplies it to the encoder based on a control signal; the encoder and the controller; transmission control for multiplexing encoded image data and transmission control data respectively output from the processing circuit and transmitting the same via the communication line; and receiving data via the communication line and converting the received data into encoded image data. and a transmission control circuit that performs reception control to separate reception control data and supply it to the decoder and the control processing circuit, respectively, and independently generate event information corresponding to a calendar day from the event information generation circuit. An image transmission device characterized in that image information is added to an image signal to be transmitted and transmitted.