JPS62203472A - Picture transmission method - Google Patents

Abstract

PURPOSE:To transmit a picture at high speed without the synchronization between facsimile equipments for transmitting and receiving by temporarily storing digital data relating the picture in a storage means. CONSTITUTION:A transmission original picture 8 to be transmitted is picture- electrical signal converted by a photoelectric converter 9 controlled by a scanning controller 12 and sequentially converted into a digital signal relating to the picture from picture information. This digital signal is stored in the storage device 15. The data stored in the storage device 15 is transmitted to the storage device 16 through a transmission path 4 such as a telephone line according to the necessity, the transmitted data is electrical signal-picture converted by a recording converter 10 controlled by a scanning controller 13 and the picture signal is sequentially converted into the picture to obtain a received picture 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image transmission method that can transmit images at high speed, regardless of the conversion speed of an original image to an electrical signal in a facsimile for transmitting and receiving images, for example.

"Prior art and its problems" In recent years, with the development of data communications, facsimile machines or offices that transmit data between images such as documents and drawings via transmission lines and reproduce the images on the receiving side have become popular. It has come to play an important role as a means of communication between people.

As shown in FIG. 5, the facsimile machines A and B include an image-to-electrical signal converter 1.7 and a modem that modulates digital data to convert it into an analog signal in the audio frequency band or vice versa. 2.6 and a telephone 3.5 for calling the destination, which are connected via a telephone line 4.

The facsimile thus configured transmits images of documents, drawings, etc. in the following manner according to the principle diagram shown in FIG.

First, the transmission original image 8 to be transmitted is sent to the image-electrical signal converter 1
A photoelectric converter 9 provided in the photoelectric converter 9 sequentially converts the original image information into an image signal, which is a digital signal representing the image. This image signal is then converted into an analog signal by the modem 2 and output to the modem 6 on the receiving side via a transmission line 48 such as a telephone line. Then, the modem 6 converts the input analog signal into a digital signal, and the recording converter 10 installed in the electrical signal-image converter 7 converts the image signal into original image information to generate the received image 11. obtain.

Further, conversion into an image signal by the photoelectric converter 9 described above,
Since the conversion to original image information by the recording converter 1o needs to be performed in real time, the scanning controller 2 that controls the charging converter 9 and the scanning controller 1 that controls the recording converter]
3 is synchronized with the synchronization signal generator 14.

In this way, in conventional facsimiles, it is necessary to synchronize the transmission and reception between facsimile B and facsimile B, so for example, original image information is converted into image signals between the sending and receiving facsimiles. If there is a difference in speed capability for converting image signals into original image information, the transmission speed during transmission and reception must naturally be synchronized with the facsimile machine with the lower speed capability. In addition, since the speed capability of facsimile is generally low, it takes time to send and receive, which results in high line usage charges, and
There were some problems, such as a limit on the number of times a facsimile could be used.

``Purpose of the Invention'' The present invention has been made to solve the problems of the prior art as described above, and is an image system that can transmit images at high speed without synchronizing facsimile transmission and reception. The purpose is to provide eight communication methods.

"Summary of the Invention" The present invention stores digital data between images in a storage means that is located between a facsimile machine that transmits and receives a facsimile machine, and transmits the stored digital data. an image input/output means for reading and reproducing the image; a digital signal converting means for converting the signal output from the image input/output means into a digital signal; and inputting digital data between the images conveyed via the transmission path. a data input means for storing the data output from the digital signal conversion means and the data input means;
recording signal conversion means for converting data stored in the storage means into a signal suitable for the image input/output means; data output means for outputting the data stored in the storage means to the transmission path; control means for collectively controlling each of the means, and when transmitting an image read by the image input/output means, digital data related to the image to be transmitted is temporarily stored in the storage means; When outputting the stored digital data to the transmission path and receiving an image, the digital data related to the image input to the data input means is temporarily stored in the storage means, and the data is processed based on the stored digital data. , which is characterized by playing back images.

As a result, images can be transmitted at high speed, and the transmission and reception time can be shortened.

"Embodiment of the Invention" An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of an image transmission device using the image communication method according to the present invention, FIG. 2 is a block diagram of a facsimile using the image communication method according to the present invention, and FIG. 3 is a block diagram of an image transmission device using the image communication method according to the present invention. A diagram of the principle of facsimile using the method, Figure 4 is M
The specific configuration of the apparatus shown in FIG. 1 is shown respectively.

As shown in FIG. 2, facsimiles A and B using the image communication method according to the present invention include an image-to-electrical signal converter 1.7 which is an image input/output means and a digital signal conversion means or a recording signal conversion means. , a storage device 15, '16 as a storage means and control means, a modem 2.7 as a data output means and input means, and a telephone 3.5 for calling a destination, and each device is a telephone. They are connected via line 4 as shown.

The image communication apparatus configured as described above transmits images in the following manner according to the principle diagram shown in FIG.

First, the transmission original image 8 to be transmitted is subjected to image-to-electrical signal conversion by the photoelectric converter 9 controlled by the scan controller 12, and the image information is sequentially converted into an image signal, which is a digital signal related to the image.

This digital signal is stored in storage device 15. The data stored in the storage device 15 is transferred to the storage device 15 via a transmission line 4 such as a telephone line as necessary. 116. The data transmitted to the storage device] 6 is subjected to electrical signal-to-image conversion by the recording converter 10 controlled by the scan controller 13, and the image signals are sequentially converted to images and the received image 11 is converted. You will get it.

Further, FIG. 4 shows a rough and specific configuration diagram of an image transmission device using the image transmission method according to the present invention,
It is structured as follows.

Facsimile 22 and document ICR as image input/output means
A word processor 23 for displaying on a screen such as T and a telex 24 for transmitting characters are connected to a converter 18 as a technical signal converting means or recording signal converting means, and are also connected to all the equipment and semiconductor chips shown in the figure. , are connected to a control device 117 as a control means for controlling them (11).
A record consisting of a fixed disk etc. as a storage means! device 15
This storage device 115 is connected to the modem 20 (+: connected) as a data output means or data input means via the interface 198.
The modem 20 is connected to an NCU (network control unit) 21 having a dialing function.

For example, in the image transmission apparatus configured as described above, when the facsimile 22 is activated, the control device 1
Data regarding the image is stored in the storage device 15 through the converter 18%, and when the storage operation is completed, the data is stored in the storage device 115 via the interface 19 by the modem 20 to the receiver selected by the NCU 21. Send all the data at once.

On the other hand, on the receiving side, when the NCU 21 receives the call signal via the modem 20, the control device! 17 stores the data exited via the modem 2o and the interface 19 in the storage device 15 (sequentially).
The data stored in 15 is sent to facsimile 22, word processor 23 or telex 2 via converter 18.
4, it is possible to obtain information similar to the information sent from the transmitting side. The above also applies to transmission between the word processor 23 and the telex 24.

As described above, according to the image transmission method according to the present invention, since data is temporarily stored during transmission and reception, N
By providing the CU21 with an automatic call/receive function, it is also possible to perform automatic dialing, which retains data and transmits data as soon as the line becomes free, when the line on the sending side is based. . It is also possible to transmit data to multiple transmission locations simultaneously. Further, in this embodiment, a fixed disk is used as an example of a storage means, but a RAM constructed from a large-capacity semiconductor chip! Of course, it may be used.

``Effects of the Invention'' As is clear from the above explanation, according to the present invention, a large amount of data can be transmitted in a short time, which is particularly useful in the case of facsimiles (as compared to the image-to-electrical signal conversion ability). It is possible to transmit data without delay, making effective use of facsimile, and reducing communication line usage charges.In addition, word processors, telex,
Since it can be linked to a television camera (IT), etc., the data sent from these devices can be converted into text, graphics, and photographs by facsimile, and many other effects can be obtained.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an image transmission device using the image transmission method according to the present invention, Fig. 2 is a block diagram of a facsimile using the image communication method according to the present invention, and Fig. 3 is the same as shown in Fig. 2. A diagram of the principle of facsimile; Figure 4 is a detailed diagram of the configuration of the image transmission device shown in Figure 1; Figure 5 is a diagram of the configuration of a conventional facsimile; Figure 6 is a diagram of the principle of the facsimile shown in Figure 5. It is. 1... Image-electrical signal converter, 2.6... Modem,
3.5...Telephone, 4...Transmission line, 7...Electric signal-image converter, 15.16...Storage device patent applicant Alps Electric Co., Ltd. Agent Patent attorney Kuni Miura Her husband is a patent attorney, Shigeru Matsui. Figure 1, Reason 3, Figure 4.

Claims (1)

[Claims] image input/output means for reading and reproducing images; digital signal conversion means for converting signals output from the image input/output means into digital signals; and inputting digital data regarding images conveyed via a transmission path. a data input means, a storage means for storing data output from the digital signal conversion means and the data input means, and a recording signal for converting the data stored in the storage means into a signal suitable for the image input/output means. A conversion means, a data output means for outputting the data stored in the storage means to the transmission path, and a control means for collectively controlling each of these means are provided, and the data read by the image input/output means is provided. When transmitting an image, digital data related to the image to be transmitted is temporarily stored in the storage means, and this stored digital data is output to the transmission path, and when receiving an image, the data input means An image transmission method, comprising temporarily storing digital data related to an image input into the storage means, and reproducing the image based on the stored digital data.