KR20030093753A - Method and apparatus of transmitting/receiving data - Google Patents

Abstract

PURPOSE: A method and an apparatus for transmitting and receiving data are provided to improve the transmission efficiency by sequentially transmitting mono data and color data in one transmitting and receiving process. CONSTITUTION: A transmitting side connects with a receiving side(10). The transmitting side transmits protocol data related to mono data transmission to the receiving side, and the receiving side transmits a confirmation signal to the receiving side. The transmitting side transmits mono data, and the receiving side receives the mono data. The transmitting side transmits protocol data related to color data transmission to the receiving side, and the receiving side transmits a confirmation signal to the receiving side. The transmitting side transmits color data, and the receiving side receives the color data(12). The connection between the transmitting side and the receiving side is released(14).

Description

Method and apparatus for transmitting and receiving data {Method and apparatus of transmitting / receiving data}

The present invention relates to a data transmission / reception method performed in a data transmission / reception apparatus such as a facsimile, and more particularly, to a data transmission / reception method and an apparatus for performing the same, which can transmit and receive mono data and color data together in one transmission / reception process. .

In the conventional data transmission / reception apparatus, a color transmission mode and a mono transmission mode are distinguished at the time of data transmission, so that one of the two modes is selected to transmit data.

However, when a single color mono data such as plain text and multi color color data such as a color image are to be transmitted together in one transmission and reception, a color transmission mode may be selected and transmitted. In this case, there is a problem in that the transmission efficiency is lowered because the image must be scanned in color, and image processing is performed in color data even for mono data, and transmitted as color data.

SUMMARY OF THE INVENTION The present invention has been made in an effort to improve the above-mentioned problems, and when it is desired to transmit mono data and color data together, there is provided a data transmission / reception method capable of distinguishing and transmitting mono data and color data in one transmission and reception process. It is.

Another object of the present invention is to provide a data transmission and reception apparatus for performing the data transmission and reception method.

1 is a flowchart for explaining a preferred embodiment of a data transmission and reception method according to the present invention.

FIG. 2 is a flowchart for explaining a preferred embodiment of the twelfth step shown in FIG.

3 is a view for explaining a specific embodiment of the data transmission and reception method according to the present invention shown in FIG.

Figure 4 is a block diagram illustrating an embodiment of a data transmission and reception apparatus for performing a data transmission and reception method according to the present invention.

5 is a block diagram illustrating an embodiment of a multifunction apparatus including a data transmission and reception apparatus according to the present invention.

In order to achieve the above object, the data transmission and reception method according to the present invention carried out via a network between the transmitting side and the receiving side, the transmitting side and the receiving side is connected; The transmitting side sequentially transmitting mono data and color data, and the receiving side sequentially receiving the mono data and the color data; And releasing the connection between the transmitting side and the receiving side.

In order to achieve the above object, the data transmission and reception apparatus according to the present invention for performing the data transmission and reception method, a key input unit for generating and outputting a transmission instruction signal manipulated by a user; Outputting a transmission signal and a scanning signal in response to the transmission instruction signal, generating and outputting protocol data for transmission or reception of the mono data and the color data, and disconnecting the connection with the reception side; A control unit for outputting; A scanner configured to output the mono data and the color data by scanning a mono image and a color image in response to the scanning signal; A storage unit for temporarily storing and reading the mono data, the color data, and the received data; The mono data and the color data read from the storage unit to the receiving side connected through the network in response to the outgoing signal, and received from the control unit; A transmitter for transmitting protocol data and transmitting the connection release signal; And a receiving unit for receiving data from a transmitting side connected through the network.

Hereinafter, a configuration and an operation of a data transmission / reception method and an apparatus for performing the method according to the present invention will be described with reference to the accompanying drawings.

The data to be transmitted in the data transmission / reception apparatus including the scanner may be generated by scanning an image through the scanner or provided from a personal computer connected to the data transmission / reception apparatus.

The data transmitting / receiving device that scans an image through a scanner to generate transmission data turns on only one of the R (Red: red), G (Green: green), and B (Blue: blue) LEDs when scanning a mono image. Scanning method or turn on R, G, B LED at the same time to make white light and scan. In scanning a color image, the R, G, and B LEDs are sequentially turned on to sequentially scan the image data.

The data scanned in this manner is transmitted through a predetermined image processing process. Here, the image processing for data transmission and reception, the process of matching the color characteristics by the color conversion table, the process of changing the format (RGB Format, LAB Format) for data transmission and JPEG (Joint Photograhic Experts) And compression using a compression technique such as a still image compression technique.

1 is a flowchart illustrating a preferred embodiment of a data transmission / reception method according to the present invention. In the data transmission / reception method performed through a network between a transmission side and a reception side, mono data after a transmission side and a reception side are connected And sequentially transmitting and receiving color data and releasing a connection (steps 10 to 14).

Referring to Fig. 1, first, the transmitting side and the receiving side connect (step 10). The connection consists of the origination of the sender and the reception of the receiver in response. Here, the call may be made by a call tone (CNG) signal by dialing, and the call may be made by a call tone (CED) signal and a digital identification signal (DIS) signal.

After the tenth step, the transmitting side sequentially transmits the mono data and the color data, and the receiving side sequentially receives the mono data and the color data (step 12). That is, first transmit and receive mono data, then transmit and receive color data, or first transmit and receive color data and then transmit and receive mono data. At this time, the order of transmission and reception may be specified by the user's selection.

FIG. 2 is a flowchart for explaining a preferred embodiment of the twelfth step shown in FIG. First, a method of transmitting / receiving mono data (steps 120 to 124) and then transmitting and receiving color data (steps 126 to 130) will be described as follows.

After the tenth step, the transmitter and the receiver transmit and receive protocol data for mono data transmission and reception (step 120). Here, the transmitting side transmits protocol frame data including code information indicating that the mono data is to be transmitted to the receiving side, and in response, the receiving side transmits an acknowledgment signal to the transmitting side to perform the protocol. After step 120, the transmitting side transmits the mono data and the receiving side receives the mono data (step 122). After step 122, the transmitter and the receiver confirm completion of the transmission and reception of the mono data (step 124). After step 124, the transmitting side and the receiving side transmit and receive protocol data for transmitting and receiving color data (step 126). Here, the transmitter sends protocol frame data including code information indicating that it is to transmit color data to the receiver, and in response, the receiver transmits an acknowledgment signal to the transmitter to perform the protocol. After step 126, the transmitting side transmits color data, and the receiving side receives color data (step 128). After step 128, the transmitter and the receiver confirm completion of transmission and reception of color data (step 130).

The above-described steps 120 to 130 may perform steps of transmitting and receiving color data (steps 126 to 130) first and then transmitting and receiving mono data (steps 120 to 124). have. As such, the order of transmitting and receiving the mono data and the color data separately may be specified in the data transmission / reception apparatus or may be designated by a user's selection. After step 130, the connection is released (step 14).

In this case, the data to be transmitted in the data transmission / reception apparatus including the scanner is generated by scanning an image through the scanner or provided from an external source such as a computer connected to the data transmission / reception apparatus. In particular, in the case of scanning an image through a scanner, the sender separately scans a mono image and a color image to generate mono data and color data, distinguishes and stores the generated mono data and color data, and proceeds to step 10. It may optionally further comprise a step (not shown).

As a result, the above-described embodiment is a method of sequentially transmitting and receiving mono data and color data together in one transmission / reception process between the transmitting side and the receiving side of the data transmitting and receiving apparatus.

3 is a view for explaining a specific embodiment of the data transmission and reception method according to the present invention shown in FIG.

Referring to FIG. 3, first, the transmitting side 20 that wants to connect with the receiving side 30 transmits a CNG signal to the receiving side 30, which means that it is a facsimile apparatus. The receiving side 30 transmits a CED signal and a DIS (Digital Identification Signal) indicating a facsimile device in response to the CNG signal.

The transmitter 20 transmits a DCS (Digital Command Signal) and a TCF (Training Confirmation) in response to the DIS signal. Here, the DCS includes code information for transmitting mono data. The receiving side 30 checks the DCS and TCF signals, and if there is an error, transmits a FTT (Failure) signal, and if there is no error, transmits a CFR (Confirmation :) signal.

The transmitter 20, which has received the CFR signal from the receiver 30, transmits mono data, and transmits a multi-page signal (MPS) when the transmission of mono data should be continued. The receiving side 30 receives the mono data and the MPS signal and transmits an MCF (Message Confirmation) signal.

The transmitter 20 receiving the MCF signal transmits mono data of a subsequent page and finally sends an End Of Message (EOM) signal indicating the end of the mono data transmission. In response to the EOM signal, the receiving side 30 transmits DIS to transmit and receive color data.

Subsequently, in the same manner as the above-described mono data transmission method, the transmitter 20 transmits a DCS signal including code information indicating that the color data is to be transmitted, ends transmission and reception of the color data, and finally, transmits the end of page (EOP). Signal). When the receiver 30 transmits a message confirmation signal in response, the transmitter 20 transmits a DCN signal to terminate transmission and reception.

4 is a block diagram illustrating an embodiment of a data transmission and reception apparatus for performing a data transmission and reception method according to the present invention. The key input unit 210, the control unit 220, the storage unit 230, the transmission unit 240, The receiver 250 is provided.

The key input unit 210 is operated by a user to generate and output a call indication signal.

The control unit 220 outputs the transmission signal and the scanning signal in response to the transmission instruction signal, generates and outputs protocol data for transmission or reception of mono data and color data, and establishes a connection with a reception side connected through a network. Outputs the release signal for disconnection.

The scanner 230 scans a mono image and a color image in response to a scanning signal and outputs mono data and color data, respectively.

The storage unit 240 temporarily stores and reads mono data, color data, and received data.

The transmitting unit 250 transmits by dialing to a receiving side through an IN / OUT, for example, network in response to an outgoing signal, and receives the mono data and color data read out from the storage unit to the receiving side connected through the network from the control unit 220. Transmit the input protocol data and transmit the disconnection signal.

The receiver 260 receives data from a transmitter side connected via IN / OUT, for example, a network.

5 is a block diagram illustrating an embodiment of a multifunction apparatus including a data transmission and reception apparatus according to the present invention, and includes an operation panel 310, a scanner 320, a printer 330, a transceiver 340, and a controller 350. ), A storage unit 360 and an interface unit 370. Here, each unit sends and receives data by the bus 380.

The control unit 350 outputs control signals for overall control of the data transmission and reception apparatus according to a predetermined control program. Each of the parts 310 to 370 of the data transmitting and receiving device operates in response to a control signal input thereto. It also generates protocol data for data transmission and reception.

The operating panel (OPE) 310 includes a plurality of numeric keys (not shown) and function keys (not shown) for setting a function on a menu to generate key data when a user operates keys. To print. In addition, a display unit (not shown) for displaying a current operating state of the data transmitting and receiving device may be further provided. The display unit may be implemented by a liquid crystal or the like. In addition, the operation panel may be implemented as a touch screen in which keys and a display unit are integrated.

The transmission / reception unit 340 exchanges data with a transmission / reception counterpart connected to an IN2 / OUT2, for example, a network such as a public switched telephone network (PSTN) in response to a control signal. The transceiver 340 may be implemented as a modem and a line interface unit (LIU) for connecting a modem and a network such as a PSTN.

The interface unit 370 interfaces data between the data transmitting and receiving device and an external (IN1 / OUT1), for example, a computer. That is, the interface unit 370 interfaces data received from the transceiver 340 or transmitted through the transceiver 340, data scanned by the scanner 320, or data exchanged with the external IN1 / OUT1. Play a role.

In response to the control signal, the scanner 320 discretizes and scans the document, converts the discretized data into image data, and outputs the converted data. That is, the scanner 320 discretizes and scans the document through an image sensor such as a charge coupled device (CCD) or a contact image sensor (CIS), and an image processing unit provided in the scanner to the scanned data. The image processor performs image processing such as shading correction, noise reduction, gradation image processing, enlargement / reduction processing, and outputs image data.

The storage unit 360 temporarily stores and temporarily stores image data output from the scanner, received data received from the transceiver unit, and / or data input via the interface unit 370 from the outside in response to the control signal. Read one data. In addition, the storage unit 360 stores a system firmware (firmware), which is a control program executed when the control unit 350 controls the data transmission / reception apparatus, and outputs it to the control unit 350.

The printer 330 prints a document corresponding to the received data received at the transmission / reception unit, the data scanned at the scanner, or the data input via the interface unit 370 from an external, for example, computer, on a printing sheet.

As described above, the data transmission / reception method and the apparatus for performing the method according to the present invention can sequentially transmit the mono data and the color data in one transmission and reception process when the mono data and the color data are to be transmitted together. Therefore, the transmission efficiency can be improved.

Claims (6)

In the data transmission and reception method performed through a network between a transmitting side and a receiving side, (a) connecting the transmitting side and the receiving side; (b) the transmitting side sequentially transmitting mono data and color data, and the receiving side sequentially receiving the mono data and the color data; And and (c) disconnecting the connection between the transmitting side and the receiving side. According to claim 1, wherein step (b), (b1) after the step (a), transmitting and receiving protocol data for transmitting and receiving the mono data by the transmitting side and the receiving side; (b2) the transmitting side transmitting the mono data and the receiving side receiving the mono data; (b3) confirming completion of transmission and reception of the mono data by the transmitting side and the receiving side; (b4) transmitting and receiving protocol data for transmitting and receiving the color data by the transmitting side and the receiving side; (b5) the transmitting side transmitting the color data, and the receiving side receiving the color data; And and (b6) confirming completion of transmission and reception of the color data by the transmitting side and the receiving side. According to claim 1, wherein step (b), (b7) after the step (a), transmitting and receiving protocol data for transmitting and receiving the color data by the transmitting side and the receiving side; (b8) the transmitting side transmitting the color data, and the receiving side receiving the color data; (b9) confirming completion of transmission and reception of the color data by the transmitting side and the receiving side; (b10) transmitting and receiving protocol data for transmitting and receiving the mono data by the transmitting side and the receiving side; (b11) the transmitting side transmitting the mono data and the receiving side receiving the mono data; And and (b12) confirming completion of transmission and reception of the mono data by the transmitting side and the receiving side. The method according to any one of claims 1 to 3, wherein in step (b), And the color data and the color data are provided from the outside of the transmitting side. The data transmitting / receiving method according to any one of claims 1 to 3, wherein The transmitting side scans a mono image to generate the mono data, and scans a color image to generate the color data, stores the generated mono data and the generated color data, and proceeds to step (a). Data transmission and reception method characterized in that it further comprises. A data transmitting and receiving apparatus for performing the data transmitting and receiving method of claim 1, A key input unit which is operated by a user to generate and output a call indication signal; Outputting a transmission signal and a scanning signal in response to the transmission instruction signal, generating and outputting protocol data for transmission or reception of the mono data and the color data, and disconnecting the connection with the reception side; A control unit for outputting; A scanner configured to output the mono data and the color data by scanning a mono image and a color image in response to the scanning signal; A storage unit for temporarily storing and reading the mono data, the color data, and the received data; The mono data and the color data read from the storage unit to the receiving side connected through the network in response to the outgoing signal, and received from the control unit; A transmitter for transmitting protocol data and transmitting the connection release signal; And And a receiving unit for receiving data from a transmitting side connected through the network.