JP2002152697A - Method for transmitting and displaying moving image using public telephone line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for transmitting and displaying a moving image to a receiving device from a transmitting device by using a public telephone line. SOLUTION: When the transmission request of the moving image is given, the transmitting device stores the moving image which is image-picked up by an imaging means at prescribed time intervals as compressed image signal data, converts it into packet data having prescribed data length in a stored order and transmits it to the receiving device. The receiving device sequentially stores image signal data included in received packet data in the storage device of the receiving device. When the reception of image signal data of the prescribed time interval is terminated, image signal data stored in the storage device is decoded and is displayed on a display device at the speed of not less than 24 frames record.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose telephone such as an analog telephone, a portable telephone, a PHS, an ISDN line, or the like, for transmitting moving image data or moving image data and measurement data to a receiving apparatus. The present invention relates to a method of transmitting and displaying a moving image capable of displaying received moving image data as a natural moving image with a maximum pixel size of 640 × 480 pixels per frame.

[0002]

2. Description of the Related Art Ordinary analog telephones, mobile phones, PHs
The communication speed of general telephone lines such as S and ISDN lines is as follows.
8-128 Kbps is used. At present, transmission of voice, character information, and still images using this general telephone line is widely used. With the spread of mobile phones and PHSs in recent years, there is an increasing need to transmit moving images using these general telephone lines. For example, in telemedicine, there is a need to transmit a moving image of a patient's operation or the like to a doctor at a remote location, or to transmit a monitoring image as a moving image to a monitoring center in the field of equipment monitoring or security.

In order to transmit a moving image, first, it is necessary to take an image of an object by an image pickup means such as a video camera, and take in the image signal data into a transmitting device. One screen of an image captured by a video camera (hereinafter referred to as a frame)
The amount of information per frame is 640 × 480 pixels in one frame, and if this is digitized and 8 bits per pixel (pixel) are required, 640 × 480 × 8 = 2457600 per frame. Bit {2.
The amount of information becomes enormous of 5 Mbits. For this reason, several Mbp
In the field of transmitting moving images using a high-speed communication line of s to several tens of Mbps, moving image data is transmitted by reducing the amount of image signal data by using image compression technology such as MPEG.

When an object is imaged by a video camera, 1
About 30 frames can be imaged per second. It is said that if this captured image is reproduced and displayed at a speed of 24 frames / second or more, it can be seen as a natural moving image by human eyes. When one frame of image signal data is compressed, the data amount is 80K to 10K.
It becomes 0K bytes. When attempting to transmit a moving image using a general telephone line, even if the image is compressed, the amount of data that can be transmitted is extremely small compared to the amount of image signal data taken in per unit time from the imaging unit. The side device requires a large-capacity storage device to temporarily store the image signal data waiting to be transmitted, and also requires a long transmission time. However, if a large-capacity storage device is provided in the transmitting device, the amount of investment increases, and there are many problems in transmitting moving images using a general telephone line. In order to solve this problem, the following measures have been proposed.

Japanese Patent Application Laid-Open No. 10-285565 discloses that when moving image data captured by an imaging unit is sequentially compressed for each frame and transferred to a transmission path such as a mobile phone, the compressed image data of the first frame is transmitted. A data attribute and header information indicating the starting point of the data are added to only the head, and the header information is omitted from the second and subsequent frames and transmitted. It is disclosed.

In the conventional moving image transmission, a method is used in which the image data of the first frame is compressed and transmitted, and then the image data of the subsequent frames transmits the difference of the image data of the previous frame. ing. However, in this method, the amount of image data in the first frame increases, and the receiving apparatus has a problem that the waiting time for receiving and reproducing the one frame becomes longer. In order to solve this problem, Japanese Patent Application Laid-Open No. H11-164298 discloses that when a moving image is transmitted using a PHS line, the
/ N (M and N are natural numbers, initial values are M <N, N is a fixed value,
M is transmitted based on the ratio of 1) in the initial screen, and the ratio of the image data of the second and subsequent frames is M and N
It is disclosed that the value of M is sequentially incremented and transmitted to a partner terminal until the values become equal.

Japanese Patent Application Laid-Open No. H11-168571 discloses that a transmitting device and a receiving device are connected to a PHS service network, and the transmitting device inputs moving image data from the outside to create a file for each screen, and There is disclosed a moving image transmission system in which a file for each screen is transmitted using a bearer service network of a PHS, and a receiving apparatus reproduces and displays the received file for each screen. This publication discloses that a moving image is composed of 18 frames per second.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
JP-A-5565 and JP-A-11-164298 disclose measures for reducing the amount of data of one frame to be transmitted. However, a method for reproducing a moving image as a natural moving image on the receiving side is disclosed. Not.

JP-A-11-168571 discloses that 1
It describes that 18 frames of image data are reproduced as moving images per second. However, in order to reproduce a moving image as a natural moving image as seen by human eyes, it is necessary to reproduce and display image data at a speed of 24 frames / sec.

Therefore, an object of the present invention is to transmit a moving image captured by an image pickup means at a predetermined time interval to a receiving apparatus using a general telephone line. An object of the present invention is to provide a method of transmitting and displaying a moving image using a general telephone line, which can reproduce data as a natural moving image and display the data as a pixel size of a maximum of 640 × 480 pixels per frame.

[0011]

According to the present invention, a transmitting apparatus and a receiving apparatus are connected by a general telephone line, and a moving image is transmitted from the transmitting apparatus to the receiving apparatus via the general telephone line and displayed. In the method, when a transmission request for a moving image is generated, the transmitting apparatus stores the moving image captured for a predetermined time interval as compressed image signal data in a storage device, and stores the image signal data in a predetermined order in the storage order. After receiving the packet data, the receiving device sequentially stores the image signal data included in the packet data in the storage device of the receiving device, and receives the packet data. When the reception of the image signal data for the time interval is completed, the image signal data stored in the storage device is decoded in the order in which the image signal data is stored, and the data is decoded into the display device of the reception device. Over arm / sec using a public telephone line to be displayed at a higher speed and the transmission of the moving image is displaying method, for displaying the pixel size of the largest 640 × 480 pixels per frame to the display device.

Also, according to the present invention, the transmitting device includes the measurement data input from the measuring device in addition to the image signal data in the packet data and transmits the packet data to the receiving device. This is a method of transmitting and displaying a moving image using a general telephone line in which the measurement data included in the packet data is immediately displayed on a display device.

Further, according to the present invention, the transmitting device transmits the measurement data input from the measuring device and the voice data input from the voice input device to the receiving device in the form of packet data in addition to the image signal data. Is a method of transmitting and displaying a moving image using a general telephone line in which measurement data included in the received packet data is immediately output to a display device when receiving the packet data, and audio data is immediately output to an audio output device. .

According to the present invention, transmission of a moving image over a long period of time using a general telephone line having a low communication speed is limited, and when a moving image is required, a short-time moving image is captured. If all the received moving image data is temporarily stored in a storage device and then the stored all moving image data is reproduced and displayed at a speed of 24 frames / second or more, the receiving side device can transmit up to one frame. This is based on the technical idea that a clear and natural moving image can be displayed even with a pixel size of 640 × 480 pixels.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which an embodiment of the present invention is applied to a remote medical diagnosis system will be described. FIG.
FIG. 1 is an overall system configuration diagram showing a first embodiment of the present invention, in which a wired analog telephone line, which is a general telephone line, is used as a communication line. In FIG.
A is a physician-side diagnostic terminal device (hereinafter referred to as a receiving device), which is used at the doctor's home or on a business trip, and is a notebook personal computer (hereinafter referred to as a notebook personal computer) or a desktop computer. It consists of a personal computer. B is a patient-side terminal device (hereinafter referred to as a transmitting-side device), which is installed in the patient's home or in the patient's room in the hospital. C is a general telephone line, in addition to an analog telephone, a mobile telephone, a PHS,
It is a telephone line such as an ISDN line, and its communication speed is 4.8 Kbps to 128 Kbps at present.

According to the present invention, using the general telephone line C, a moving image of a patient, measurement data such as an electrocardiogram and a pulse, and a nurse's voice are collected from the transmitting device B and transmitted to the receiving device A. The receiving device A is a method for reproducing these transmitted data.

The receiving device A on the physician side preferably comprises the notebook computer 1 as described above, a liquid crystal display device 2, an external storage device 3 such as a hard disk device, and an input device 4 such as a keyboard, a touch panel and a mouse. It has. The headset 5 is also connected to the notebook computer 1. The notebook computer 1 has a transmitting device B
And a modem 6 for performing communication via a general telephone line C. The operation of the notebook computer 1 is as follows.
It is executed under the control of software incorporated in the notebook computer 1 in advance.

The transmitting device B includes a control device 7, a biological monitor device 8 for measuring the pulse, blood pressure, electrocardiogram, etc. of the patient, a camera 9, which is a means for taking an image of the patient's operation and complexion, a nurse or caregiver. It comprises a microphone 10 which is a device for inputting voice, and a speaker 11 which outputs voice transmitted from the doctor. The biological monitoring device 8 as a measuring device can simultaneously measure a pulse, a blood pressure, an electrocardiogram, and the like, or arbitrary data thereof. The living body monitoring device 8, the camera 9, the microphone 10, and the speaker 11 are connected to the control device 7 by the interface devices 12, 13, 14, 15, 16,
17 and 18 are connected. Note that the camera 9
For example, a video camera having a video signal NTSC output, a CCD camera, a digital video camera, or the like can be used.

The interface device 12 is an RS232C circuit for taking digital data such as blood pressure measured by the living body monitor device 8 into the control device 7. The interface device 13 is an A / D converter that is a means for converting analog data such as a pulse and an electrocardiogram measured by the biological monitor 8 into digital data. In addition,
The control device 7 captures the data measured by the living body monitoring device 8 at predetermined time intervals, for example, every two seconds, and temporarily stores the data in the storage device.

The interface device 14 is means for converting image signal data captured by the camera 9 into a digital signal. The interface device 15 is means for compressing the image signal data converted into the digital signal. It is composed of a circuit including a compression LSI. When a digital video camera is used as the camera 9, it is not necessary to convert the captured image signal data into a digital signal. Interface device 16
Is an RS232C circuit for transmitting a control signal transmitted for controlling the posture and the zoom function of the camera 9 according to an instruction from the personal computer 1 on the doctor side to a posture control device incorporated in the camera 9. The interface device 17 is means for converting voice collected by the microphone 10 into a digital signal. The interface device 18 is a device for outputting the audio signal data transmitted from the headset 5 on the doctor side from the speaker 11. These interface devices 12, 13, 14,
15, 16, 17 and 18 can also be incorporated in the control device 7 as interface boards.

The control device 7 is composed of a microcomputer or a personal computer, and has an internal storage device 1 such as a RAM for temporarily storing the digitized biological signal data, image signal data and audio signal data.
9, an image compression circuit including the image compression LSI, a board including the various interface circuits, and the like. Further, a display device 20 such as a CRT and a modem 21 for transmitting and receiving data to and from the communication line C are connected to the control device 7.

The control device 7 inputs the biological signal data measured by the biological monitoring device 8, the image signal data captured by the camera 9, and the audio signal data collected by the microphone 10 to the internal storage device 19 and the like. Is edited into multiplexed packet data, and the doctor's PC 1
And a function of controlling the attitude and the zoom function of the camera 9 via the interface device 16. These functions are executed according to control of software incorporated in the control device 7.

In FIG. 1, an example of a system configuration utilizing an analog telephone line C as a general telephone line has been described. In the present invention, however, as shown in FIG. The used telephone line C can be used. The system configuration shown in FIG. 2 is a system in which a mobile phone 22 is connected to the notebook personal computer 1 and a mobile phone or PHS phone 23 is also connected to the control device 7 of the transmitting device B.

Next, the operation of the remote medical diagnosis system shown in FIG. 1 will be described. A doctor at home or on a business trip starts up the receiving device A, and uses the headset 5 to notify a nurse or caregiver on the patient side of a data transmission request. In this case, the nurse may call the doctor and make a data transmission request. Next, the nurse or caregiver on the patient side makes predetermined preparations for performing measurement of biological signal data such as pulse, blood pressure, and electrocardiogram by the biological monitoring device 8. This preparation work can be performed based on the instruction displayed on the display device 20. When the nurse has completed the predetermined preparation, the nurse notifies the doctor of the completion of the preparation using a telephone (not shown) or the control device 7. continue,
The doctor operates the notebook personal computer 1 to transmit the “data transmission request signal” to the transmitting device B via the general telephone line C, and the system shown in FIG. 1 or 2 starts operating.

First, in response to a request from the receiving device A on the doctor side, the measurement data and the voice data collected by the transmitting device B are transmitted to the receiving device A, and the receiving device A reproduces the received data. The procedure will be described with reference to the flowchart shown in FIG.

1) The doctor makes a request for transmission of measurement data to the transmitting device B in an interactive manner with the display device 2 of the notebook computer 1. Then, the notebook personal computer 1 transmits the data transmission request signal to the transmitting device B via the general telephone line C (step R1).

2) Since the control device 7 of the transmitting device B is in a state of waiting for data reception from the receiving device A (step T1), when receiving a data transmission request from the receiving device A, the control device 7 transmits the request. The contents of the request are determined (step T2). There are three types of request signals from the receiving device A: a transmission request for measurement data, a transmission request for a moving image, and a transmission end. The control device 7 determines the types of these request signals,
Step T when the transmission request of the measurement data is received
3. If a transmission request for a moving image is received, step T
7. If a transmission end signal is received, the process proceeds to step T8.

3) Upon receiving the measurement data transmission request, the control device 7 performs the process of step T3. This step T
3, the interface device 1 collects the information with the microphone 10
The audio signal digitized in 7 is input to the internal storage device 19 of the control device 7.

4) Subsequently, the control device 7 proceeds to the process of step T4, and checks whether or not a signal for transmitting measurement data has been input from the living body monitor device 8. This check can be performed by the control device 7 determining on / off of a data reception flag of an input port for inputting measurement data from the interface devices 12 and 13 by software. In this check processing, if the signal for transmitting the measurement data is not input to the input port, the process immediately proceeds to the processing in step T5. When a signal for transmitting the measurement data is input to the input port, the measurement data is received, and the received measurement data is temporarily stored in the storage device 19. A normal measuring device such as the biological monitoring device 8 transmits the measured data to a predetermined time interval (for example, 2
(E.g., every second), the input port must be checked as described above.

5) The audio signal data input in the process of step T3 and the measurement data input in the process of step T4 are converted into packet data by the process of step T5. The configuration of the packet data converted in the process of step T5 is such that when the control device 7 does not input the measurement data, it has only the header portion and the audio signal data, and when the measurement data is received, the configuration shown in FIG. As shown in (1), the data configuration is such that measurement data and audio signal data are multiplexed. The header section shown in FIG. 5 stores an identification code indicating that the packet data includes measurement data and audio signal data, the data length (byte length) of one packet data, and the like. At the head of the measurement data and the audio signal data, the data length of each data is stored.

6) The data of one packet converted in the process of step T5 is transmitted to the receiving device A using the general telephone line C by the process of step T6. When the process in T6 is completed, the process returns to the process in T1 to create the next packet data and transmit it to the receiving device A.

By performing the above-described processing, the data input to the control device 7 is reliably transmitted to the receiving device A at predetermined time intervals in almost real time without any voice dropout. be able to. Various processing procedures are conceivable in addition to the above-described series of processing procedures. For example, the input of the measurement data in step T4 that needs to be captured at predetermined time intervals can be performed using a timer interrupt.

7) The receiving device A sends 1
When the packet data is received (step R2), the header of the received packet data is checked to determine whether it is only an audio signal or data including an audio signal and measurement data (step R3). If the received packet data is only the audio signal data, the packet data is decoded to reproduce the audio signal data (step R).
4) The decoded audio signal data is reproduced from the headset 5 (step R5). The decoding is a process for decoding the audio signal digitized or compressed by the interface device 17 by software and outputting it as audio from the headset 5.

8) If measurement data has been received,
First, the audio data is decoded in step R6, and the audio is reproduced from the headset 5 in the processing in step R7. Subsequently, the measurement data is decrypted in the processing of Step R8, and the decrypted measurement data is displayed on the display device 2 in the processing of Step R9. The decoding of the measurement data is processing by software for displaying waveform data such as an electrocardiogram on the display device 2.

9) Subsequently, it is checked in step R10 whether the doctor has input the end of the data transmission from the input device 4. If the end has not been input, the flow returns to step R1 to request transmission of the next packet data. If the end has been input, the process proceeds to step R11, where a data transmission end signal is transmitted to the transmitting device B.
By performing each of the above steps, the transmitted voice can be reliably reproduced as voice, and measurement data such as blood pressure, pulse, and electrocardiogram data can be reliably displayed on the display device. Medical examination can be performed.

There is a case where the doctor wants to make a diagnosis by looking at the measurement data such as the pulse and the electrocardiogram displayed on the display device 2 and further looking at a moving image including the operation of the patient, the complexion, the condition of the affected part, and the like. At this time, the doctor makes a transmission request of the moving image to the transmitting apparatus B. Next, a processing procedure when a request for transmitting a moving image is made will be described based on a flowchart shown in FIG. This processing procedure is the processing of step T7 shown in FIG.

1) The receiving device A requests the transmitting device B to transmit a moving image (step R100). The request for transmitting the moving image is made in an interactive manner with the display device 2 of the notebook computer 1. When the transmission request of the moving image is made, a time interval for capturing the moving image by the camera 9 of the transmitting apparatus B, for example, a time value of “moving image data captured in 10 seconds” is also set, and this time value is also transmitted. Side device B
To be transmitted. The value of the predetermined time interval for capturing the moving image may be set in an interactive manner with the display device 2. Considering the current communication speed of the general telephone line C, this time value is desirably 15 seconds or less. When the transmitting apparatus B receives this moving image transmission request (step T100), the control device 7 starts capturing moving images at predetermined time intervals from the camera 7 (step T1).
01).

2) Image signal data picked up by the camera 9 at a speed of 24 to 30 frames / sec is converted into digital data by the interface device 14 in frame units.
Further, the image is compressed by the interface device 15.
The compressed image signal data is sequentially stored in the internal storage device 19 in frame units under the control of software of the control device 7 (steps T101, T102, T
103, T104). At this time, a frame number is assigned to the image signal data stored in the internal storage device 19 for each frame so that the order of the stored frames can be determined.

3) Subsequently, the control device 7 executes step T10
Proceeding to step 5, it is checked whether or not a signal for transmitting measurement data has been input from the living body monitoring device 8. This check can be performed by the control device 7 using software to determine whether the data reception flag of the input port for inputting measurement data from the interface devices 12 and 13 is on or off, similarly to the process of step T4 in FIG. is there. In this check processing, when the signal for transmitting the measurement data is not input to the input port, the process proceeds to step T106. When a signal for transmitting the measurement data is input to the input port, the measurement data is received, and the received measurement data is temporarily stored in the storage device 19.

4) Subsequently, the audio signal data from the microphone 10 is input to the internal storage device 19 of the control device 7 by the processing of step T106.

5) Steps T104, T105, T10
The image signal data, the measurement data, and the audio signal data stored in the internal storage device 19 are converted into packet data having a predetermined data length by the processing of No. 6 and transmitted to the receiving device A (step T107). The configuration of the packet data at this time is as shown in FIG.
As shown in (1), the audio signal data and the image signal data are multiplexed. In this packet data configuration, since no measurement data has been input yet, the header shown in FIG. 6A has an identification code indicating that only the audio signal and the image signal are included, the data length of the packet data, and the audio signal data. , The data length of the audio signal data is stored in the head area, and the frame number and the serial number of the image signal data and the data length of the image signal are stored in the head area of the image signal data. The additional number of the frame number means that it is better to transmit one frame of image signal data in several packets without transmitting all the image data of one frame in one packet, because the processing efficiency of the control device 7 is higher. Means the division number.

When the control device 7 inputs the measurement data, the configuration of the packet data is as shown in FIG. 6B, and the measurement data, audio signal data and image signal data are multiplexed with a predetermined data length. Convert to packet data. Then, the packet data shown in FIG. 6A or FIG. 6B is transmitted to the receiving device A using the general telephone line C. In addition, as shown in FIG.
The data length of one packet obtained by multiplexing the audio signal data and the image signal data is preferably about 1K to 3K bytes.

6) The control device 7 checks whether all data of the moving image for the time interval requested by the receiving device A has been transmitted (step T108), and if not transmitted, returns to step T101. To capture the next video.
When the moving image for the requested time interval has been transmitted, a transmission end signal of the moving image is transmitted to the receiving device A in the process of step T109, and the transmission of the moving image is terminated. Note that the capture of the moving image for the requested time interval has been completed, but if the untransmitted image signal data is stored in the storage device 19, the process returns to step T105 to return the untransmitted image signal data, Measurement data and audio signal data are received by the receiving device A
To be transmitted.

In the processing of each of the above steps, the data transmission processing in step T107 requires time. Therefore, when the control device 7 performs the multi-task process of performing the processes of T101 to T106 at the same time while performing the process of T107, the image data, the measurement, and the audio signal are transmitted while performing the data transmission to the receiving device A. It becomes possible to input data, and it is possible to eliminate occurrence of missing input of image, measurement, and audio signal data. By performing the above processing by the software of the control device 7, a maximum of 640 × 480 pixels per frame can be changed to 24 to 480 pixels.
The moving image data captured at a speed of 30 frames / second can be transmitted to the receiving device A.

7) The receiving device A receives 1
When the data for the packet is received (step R10)
1) First, it is checked whether the received data is moving image data or a moving image transmission end signal has been received (R102). When the moving image data is received, the image signal data in the packet data is stored in the external storage device 3 of the notebook computer 1 (step R103). Subsequently, the audio data in the packet data is immediately decoded and reproduced from the headset 5 as audio. Further, when the packet data includes measurement data such as biosignal data, the measurement data is immediately decoded and displayed on the display device 2 (step R).
104), returning to step R101 to receive the next packet data. It is possible to check whether or not the received packet data includes measurement data by checking the identification code in the header of the packet data.

8) When the receiving apparatus A determines that all the moving image data has been received by the processing in step R102, the receiving apparatus A decodes the image signal data stored in the external storage device 3 in the order of frame numbers (step R105). ), And displays the decoded image signal data for one frame on the display device 2 (step R106). Then, Step R107
It is checked whether all the moving images have been displayed, and if all the moving images have been displayed, the processing for receiving the moving images is terminated.

9) When an image of one frame is displayed, the display speed of the next frame to be displayed on the display device 2 is 24 to 30.
The timing of the display is set so as to be set to frames / second, that is, so as to be reproduced as a moving image (step R108). Since this timing time is affected by the processing speed of the CPU of the notebook personal computer 1, it is preferable to determine the optimum value by a test trial. After performing the process of step R108, the process returns to step R105 to display the image of the next frame.

By the processing of the receiving side apparatus A, all of the transmitted moving image data, which is a short moving image, is temporarily stored in the external storage device 3 once, and the stored moving image data is stored in the software. Through the processing, a moving image having a pixel size of 640 × 480 pixels per frame at a maximum speed of 24 to 30 frames / second can be reproduced and displayed.

In the above-described embodiment of the present invention, an example has been described in which measurement data and audio signal data are also included in packet data when a moving image is transmitted. However, in the present invention, only moving image data is transmitted. The data may be converted into packet data and transmitted to the receiving device. When only moving image data is transmitted, the transmission time is shortened, and the transmitting device can also reduce the capacity of the storage device that stores the image signal data.

Further, the embodiment of the present invention has been described with respect to an example in which the present invention is applied to a remote medical diagnosis system. In the meantime, it can be applied as a system for transmitting to a monitoring center.

[0051]

The present invention described above has the following effects. 1) The video data can be transmitted to the receiving-side device using a general telephone line when necessary for a short period of time, and can be reliably reproduced and displayed as a natural video. 2) In data transmission, measurement data and audio data can be transmitted simultaneously with a moving image because the data is multiplexed, converted into packet data, and transmitted. 3) Since the transmitting device sequentially transmits the captured moving image data to the receiving device in a first-in first-out manner while sequentially storing the captured moving image data in the storage device, a large-capacity storage device for temporarily storing moving image data is not required. In addition, moving images can be reliably transmitted using a general telephone line.

[Brief description of the drawings]

FIG. 1 is an overall system configuration diagram showing a first embodiment for implementing the present invention.

FIG. 2 is an overall system configuration diagram showing a second embodiment for implementing the present invention.

FIG. 3 is a flowchart showing a processing procedure when transmitting, reproducing, and displaying audio signal data and measurement data in the present invention.

FIG. 4 is a flowchart showing a processing procedure when transmitting, reproducing, and displaying moving image data, measurement data, and audio data in the present invention.

FIG. 5 is an explanatory diagram showing a configuration of packet data when transmitting measurement data and audio data in the present invention.

FIG. 6 is an explanatory diagram showing a configuration of packet data when transmitting image signal data in the present invention;
(A) is a data configuration example when transmitting audio signal data and image signal data, and (b) is a data configuration example when transmitting measurement data, audio signal data, and image signal data.

[Explanation of symbols]

A: Receiving device B: Transmitting device C: General telephone line 1: Laptop computer 5: Telephone 6: Modem 7: Control device 8: Biological monitoring device 9: Camera 10: Microphone 11: Speaker 20: Modem 21: Modem 22: Mobile phone 23: Mobile phone

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/081 H04N 7/13 Z 7/24 (72) Inventor Kazuyuki Sumida 2-3-1 Ginza, Chuo-ku, Tokyo No. F-term in the Company's System Mate (reference) AC04 AC05 AC14 AC16 AD01 AD08 AD14 5K101 KK04 LL03 LL12 NN06 NN18 NN22 SS07

Claims (4)

[Claims] 1. A method for transmitting and displaying a moving image from a transmitting device to a receiving device via a general telephone line, wherein the transmitting device and the receiving device are connected by a general telephone line. When a request for transmitting a moving image is generated, the image signal data is stored in a storage device as compressed image signal data of a moving image captured by an imaging unit connected to the transmission side device for a predetermined time interval. The stored data is converted into packet data having a predetermined data length in the order stored and transmitted to the receiving device, and the receiving device transmits the image signal data included in the received packet data to the storage device of the receiving device. Sequentially storing, when the reception of the image signal data for the predetermined time interval is completed, the image signal data stored in the storage device is decoded in the order in which it is stored, and Transmission and display method of a moving image using a public telephone line, characterized in that the display at 24 frames / sec or faster in the display device of the signal-side device. 2. The transmitting device includes measurement data input from a measuring device in addition to image signal data in packet data and transmits the packet data to the receiving device. The receiving device receives the packet data when receiving the packet data. The method for transmitting and displaying a moving image using a general telephone line according to claim 1, wherein the measurement data included in the packet data is immediately displayed on a display device. 3. The transmitting device transmits the measurement data input from the measuring device and the voice data input from the voice input device to the receiving device in addition to the image signal data in the packet data. 2. The general telephone line according to claim 1, wherein upon receiving the packet data, the measurement data included in the received packet data is output immediately to a display device, and the audio data is output immediately to an audio output device. Video transmission and display method. 4. The moving picture using a general telephone line according to claim 1, wherein the receiving side apparatus displays the image signal data on a display device with a maximum pixel size of 640 × 480 pixels per frame. Transmission and display method.