KR20020005776A - Apparatus and method for mailing using code image - Google Patents

Abstract

PURPOSE: Postal service apparatus using code images and its method are provided to send a postal medium such as a postal envelope with a predetermined image code attached by a sender and to receive a pertinent service by decoding the received image code by a receptor. CONSTITUTION: A postal service apparatus comprises a plurality of servers, data bases and postal media, a display device(16), a receiver computer(17) and a sender computer(18). A server(19) of giving various information supplies a certain information with a user connecting through a network. A postal service server(11) displays a plurality of postal media to a sender in an image type to receive a postal medium selected by the sender, and transfers the selected postal medium to convert the information into code images according to a predetermined algorithm, and is connected to a receiver computer connected through a communication network(14). A postal medium server(12) makes the transferred postal medium into a postal medium to mail the postal medium to a receiver along with a code image.

Description

Apparatus and method for mailing using code image}

The present invention relates to a postal service apparatus and method using a code image, and to an apparatus and method for providing a postal service using a physically expressed code image.

With the development of the Internet, postal services using e-mail or digital cards are being utilized. E-mail services using digital technology are very fast, can be sent to many people at the same time, and can easily receive replies.

However, as e-mail is applied to most of the work, and also exchanged through various events, holidays, birthdays, etc., there is a growing awareness of message pollution instead of the original novelty. Instead, the old general mail is attracting attention because it is more human. Therefore, at present, when a card is ordered through e-mail, a method of sending a card or a mailing company directly to a counterpart through a general mail network is being developed. In addition, the service is used to view the image of the card over the Internet and orderer to receive it as a paper card.

Therefore, there is a need for a postal service that can take advantage of both the e-mail service and the physical postal service.

The technical problem to be achieved by the present invention is to provide a postal service apparatus and a method in which a receiver decodes the received code image and provides a corresponding service when the sender attaches a predetermined code image to a postal medium such as a card or a postal envelope. have.

1 is a block diagram of a postal service apparatus according to the present invention.

2 shows an example of a code system for generating a code image in the form of a color matrix.

3 (a) to 3 (d) show an example of a mail medium to which a code image is attached.

4A illustrates a case where a postal service is centered on a postal service server.

4b illustrates a case where a postal service is distributed between a postal service server and a postal media server.

FIG. 5 illustrates an example of an interface for inputting a message and network address information of an information providing server to be referred to in FIGS. 4A and 4B.

FIG. 6A shows an example in which a mail selected by a sender is combined with a written code, and a code is attached to a postal picture card.

6B is an example of a result of previewing an electronic message created or designated by a sender, and illustrates an example of an electronic message provided by an information providing server to which a receiver decodes and accesses a code.

7 is a flowchart illustrating a method in which a receiver receives information by using a mail medium.

8A to 8C illustrate examples of structures and contents of codes in encoding or decoding.

9 illustrates an example of a structure of a database according to an index type code.

10 to 12 are diagrams illustrating various examples of a decoding scheme in the method described in FIG. 7.

In order to achieve the above technical problem, the present invention provides a postal service for a user connected via a network by a postal service server providing a postal medium, wherein the postal service server sends a plurality of postal media to an image sender. Displaying and receiving a mail medium image from a sender; Selecting a server providing information to be attached from a sender; The mail service server converting the information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And transmitting, by the postal service server, both the selected postal media image and the code image to the sender in physical form, in electronic form or only the postal media image in physical form, and the code image in electronic form. do.

In order to achieve the above technical problem, the present invention provides a postal service for a user connected through a network by a postal service server providing a postal medium, each of which represents a plurality of postal media in the form of images, each postal media image Producing and distributing a physical mail medium; The sender purchases the distributed mail medium; Selecting a server providing information to which the sender wishes to attach; The mail service server converting information including at least network address information of the information providing server selected by the sender into a code image physically represented according to a predetermined algorithm; And the sender attaches the code image to a purchased mail medium and delivers it to the receiver.

In order to achieve the above technical problem, the present invention provides a postal service for a user connected via a network by a postal service server providing a postal medium, wherein the postal service server sends a plurality of postal media to an image sender. Displaying and receiving a mail medium image from a sender; Selecting a server providing information to be attached from a sender and receiving a receiver address; The mail service server converting the information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And producing, by the postal service server, a selected postal medium image and a coded image in a physically expressed form, and delivering the same to a receiver.

In order to achieve the above technical problem, the present invention provides a receiver for receiving a mail medium with the code image attached thereto through a mail service server for converting network information of a server providing predetermined information into a code image according to a predetermined algorithm. A method for receiving information from an information providing server by using the method, the method comprising: inputting, by a receiver, a code image attached to the postal medium; Extracting predetermined code information embedded in the code image by decoding the input code image according to an algorithm provided by the postal service server; Checking the extracted code information and accessing an information providing server connected to the code information by driving an embedded service program; And receiving a service from the information providing server.

To achieve the above technical problem, the present invention is a sender computer; An information providing server for providing predetermined information to a sender connected through a network; Displaying a plurality of postal media in an image form to a sender connected through the sender computer, selecting a postal media image from the sender, transmitting the selected postal media image, and calculating network information of the information providing server requested from the sender A postal service server converting the code image according to; And a postal media server for producing a postal media image received from the postal service server as a physical postal medium, wherein the code image is attached to the physical postal media and delivered to a recipient.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a postal service apparatus according to the present invention. The postal service apparatus according to FIG. 1 includes a postal service server 11, a code database DB 11a provided in the postal service server 11, an address DB 11b, a postal media DB 11c, and a postal media server 12. ), A postal medium DB 13 provided in the postal medium server 12, a postal medium 15 having a code image physically represented by the communication network 14, a postal medium server 12, and an imaging device 16 ), Recipient computer 17, sender computer 18 and information providing server 19. Here, the postal media server 12 may transmit or receive a postal media image through the communication network 14, and is a server for physically producing a postal media image.

When the postal service server 11 receives a request such as a search for a postal medium from the sender computer 18 connected through the communication network 14, the postal medium DB 11c or the postal medium DB provided in the postal medium server 12 (13) to allow the user to select the desired mail medium. Here, the postal medium refers to all kinds of items that can be delivered through a courier service, such as a postal card, a postal envelope, a document envelope, and a parcel box.

When the sender selects the appropriate postal medium, composes the message to be forwarded, and selects the information providing server 19 to refer to or attaches, the postal service server 10 is the network address for the selected information providing server 19. The information is stored in the address DB 11b, and information including at least network address information is converted into a code image of a predetermined form and stored in the code DB 11a. Here, the network address information indicates the location of a specific device in a network environment, and is represented by letters, numbers, special characters, and the like, and URL or IP (Internet protocol) is representative.

The code image is a predetermined shape, color, pattern generated by converting one or more characters or numbers included in the code information by a predetermined code system for mapping each letter and number to a predetermined color, as shown in FIG. Or it refers to an image consisting of a combination of them (can also include letters, numbers). Examples thereof include barcodes and codes such as PDF-417, and a matrix image composed of one or two-dimensional monochrome or color cells (or lines).

The encoding method according to the code system of FIG. 2 is performed by converting various characters or numbers into codes and then generating code images with colors (colors) assigned to the codes. In this example, code images are generated using eight colors, and two consecutive cells are used to represent one letter or number. For each color, codes "000" through "111" are assigned. For example, the number 3 is assigned to the code " 000 011 " and encoded into the color assigned to the code " 000 " and the color assigned to the code " 011 ", and imaged into a cell of the two colors.

In Fig. 2, due to the limitations of the drawing, it is displayed in black and white gray level color. In actual application, it is possible to use black and white gray level, but it is more advantageous to recognize the code by implementing a combination of color colors. The number will depend on the capabilities of the device that prints color (such as a printer) or the device that recognizes color (such as a scanner).

Such code images exist in visual form or in the form of computer-readable file data, and the code images contain "code information" represented by letters and numbers.

The postal service server 11 may show the sender the appearance of the code image attached to the postal medium in advance. The sender receives a physical postal medium corresponding to the postal medium image selected by the sender from the postal medium server 12, and physically stores the code image corresponding to the information providing server 19 selected by the postal service server 10. The code image may be attached to a postal medium, or the code image may be transmitted to the postal medium server 12, and the postal medium server 12 may produce a physical postal medium to which the code image is attached and deliver the code image to the recipient. 3 (a) to 3 (d) show an example of a mail medium to which a code image is attached.

4A illustrates the above-described postal service method around a postal service server 400. That is, the sender accesses the postal service server 400 and selects one of the postal media images provided by the postal service server 400 or the postal media server 410 through the postal media search / selection engine. When the sender selects the information providing server to attach through the code + mail generating engine, the code + mail generating engine converts the network information of the information providing server into a code image. At this time, the code image, code information, etc. are stored in the code DB, network address information is stored in the address DB. The sender may select a type of postal medium to which a code image is added at the postal service server 400. The type of postal media to which the code is added may be in the form of an image of a postal media + code and a physical postal media + code. In the case of an image form, it may be a form through an electronic file or a visual display. When the sender requests a physical mail medium, if the mail medium image selected by the sender is provided by the mail medium server 410, the mail medium server 410 may use a mail or a courier service to correspond to the mail medium image. The mail medium is transmitted to the mail service server 400. If the image selected by the sender is provided by the postal service server 400, the postal service server 400 transmits a physical postal medium to the sender using postal mail or courier service. The sender may designate the network address, URL, or telephone number of the information providing server to the postal service server 400. In addition, according to the interface provided by the postal service server 400 or the information providing server designated by the postal service server, the sender creates an electronic message consisting of letters, numbers, multimedia information, sound, and graphics, and then, network the server containing the corresponding information. Store address, URL, phone number, etc in address DB. In addition, corresponding information is also stored in the code image and code DB. In addition to the electronic message, the sender may send a message to be printed on a postal medium, in which case the message may be printed directly at a code + postal medium generating engine of the postal service server 400 or printed at the postal medium server 410. .

4b illustrates a case where a postal service is distributed between a postal service server and a postal media server. That is, when the sender accesses the postal service server 400, the postal media search / selection engine of the postal service server 400 provides the sender with the postal media image stored in the postal media DB or the postal media provided by the postal media server 410. Display the image. If the sender has selected the postal media image in the postal media server 410, the postal media server 410 transmits the postal media image to the postal service server 400. When the sender inputs the network address information of the information providing server 19 to be referred through the code + postal medium generating engine, the postal service server 400 converts the network address information into a code image, and selects the selected mail medium image. Attach to At this time, the code image is stored in the code DB, the network address information is stored in the address DB. The postal service server 400 shows the postal media image with the code image attached to the sender in the form of a preview, and transmits it to the postal media server 410 again, the postal media server 410 physically produces the sender. To the receiver or directly to the recipient. At this time, when the sender composes a message to be sent to the receiver and transmits it to the postal service server 400, the postal service server 400 also attaches the message to the postal medium and transmits it to the postal medium server 410. The postal medium server 410 transmits a postal medium with a message and a code image attached thereto.

Meanwhile, the postal service server 400 converts the network address information of the information providing server 19 frequently referred to by the sender without a request of the sender into a code image, attaches it to each postal medium, and sends it to the postal medium server 410. Can be. In this case, the postal media server 410 may physically produce it and distribute it to the general store 420. In addition, the postal media server 410 may view a postal medium that has been physically produced, and may distribute it directly to the sender even when the sender orders through the postal media server 410 or the postal service server 400. At this time, the sender may select a postal medium having a code image of the desired information providing server 19 and transmit it to the receiver.

As another example, if the postal media server 410 produces only the physical postal media and distributes it to the general store 420 or directly to the sender by an order of the sender, the sender accesses the postal service server 400 and provides information. The code image for the server 19 may be provided and attached to a physical mail medium obtained by the server 19 and transmitted to the recipient.

When the receiver receives the mail medium to which the code image is attached, the receiver can decode the code image and access the information providing server 19 provided by the sender to receive the corresponding service.

FIG. 5 illustrates an example of an interface for inputting a message and network address information of an information providing server to be referred to in FIGS. 4A and 4B.

6A shows an example in which a mail selected by a sender is combined with a written code, and a code is attached to a postal picture card. 6B is an example of a result of previewing an electronic message created or designated by a sender, and an example of an electronic message provided by an information providing server to which a receiver decodes a code and accesses it. Such postal services may be performed electronically as well as physically.

7 is a flowchart illustrating a method in which a receiver receives information by using a mail medium. As shown, the method by which the receiver receives the information service is as follows. First, the receiver inputs the code image through the image device 16 connected to the receiver computer 17. The image device 16 is a device capable of acquiring visual information using light, and corresponds to a PC camera, a digital camera, a scanner, a barcode reader, or an OCR device. If the mail medium is delivered electronically, the code image stored in the memory, disk or other storage device is loaded (step 70). The receiver computer 17 decodes the code image according to a predetermined algorithm downloaded from the postal service server 10, or transmits the code image to the postal service server 10, the postal service server 10 transmits the received code image It decodes and transmits the result to the receiver computer 17 (step 71).

Decoding methods include a direct decoding method and an index decoding method according to information included in a code. In the direct decoding method, when the code image is decoded, the network address is extracted immediately when the user identification information and the network address are included according to the code system. In index decoding, the output represents a key or reference value in a database or file that contains network address information.

In the decoding process, it is necessary to find meaningful shapes, colors, patterns, and characters included in the code image. In addition, a process of correcting the distorted image is required. Here, using at least one method of RGB (Red, Green, Blue) model, HSV (Hue angle, Saturation, Value) model, CMY (Cyan, Magenta, Yellow) model, HLS (Hue angle, Lightness, Saturation) model Color discrimination is possible. Border and detection and thinning algorithms can also be used to detect shapes and patterns.

8A to 8C illustrate examples of structures and contents of codes in encoding or decoding. 8A shows the case where the code has only the network address information 81. The network address information 81 may be a network address, a URL, or an index. A network address is an Internet address, an IP address, a domain name, and other network alphanumeric information that refers to a specific address that points to a particular device. A URL is a format that points to a specific address on the Internet, consisting of protocol and network addresses, directories, parameters, and special characters.

An index serves as a reference to find information in a database that manages network addresses. 9 illustrates an example of a structure of a database according to an index type code. The database according to FIG. 9 has an index field 91 and an actual address information field 92 corresponding to the index field 91. The index field 91 refers to a key value used when trying to find the information in the address database 11b of the postal service server 10 in relation to the actual address information field 92 of the information providing server 19. That is, for example, when "comsciyonseiackr" is input as index information, the postal service server 10 detects and outputs "comsci.yonsei.ac.kr" which is actual address information associated with the index information. If the actual address information "comsci.yonsei.ac.kr" is changed to another address, only the contents of the actual address information field 92 may be corrected, thereby providing the user with the changed address information as the previous index information. . Meanwhile, the content referred to by the index information may function as another index information. In this case, the actual address information may be detected by tracking the information according to the other index information.

The information providing server 19 stored in the actual address information field 92 can be expressed in various ways. In particular, the URL and the IP address representing the address of the Internet site are representative.

8B illustrates an example in which the service information 82 is added to the network address information 81. The service information 82 is for using a specific network service, and includes a service defined in a URL such as a web service, a telnet service, an e-mail service, a gopher service, and a file transfer protocol (FTP).

FIG. 8C illustrates a case where network address information is subdivided into host information 83 and additional information 84 in the structure of FIG. 8B. Here, the additional information 74 may be a directory or a parameter.

As a result of decoding the code image in step 71, if the code includes an index (step 72), the index is searched (step 73). After the search, network address information according to the search result is set (step 74). If the code does not contain an index, set the network address or URL manually or set it to default (step 75).

When the network address information is set, the receiver computer 17 sets the service information (step 76), runs the set service program (step 77), and accesses the corresponding information providing server 19 (step 78). The service program is driven according to the service information set in the code. If there is no service information in the code, a service set as a default in the program is provided. For example, if the address information is a URL, the service is determined according to the protocol defined in the URL. If the address information is simply a network address and the basic service is defined as telnet, the telnet client program is started.

When the receiver computer 17 is connected to the information providing server 19 by running the service program, the receiver receives the corresponding service from the information providing server 19 (step 79).

10 to 12 are diagrams illustrating various examples of a decoding scheme in the method described in FIG. 7. The method shown in FIGS. 10 and 11 is a user-based decoding method, which is divided into an index type decoding method (FIG. 10) and a direct decoding method (FIG. 11) according to the content of code information. The decoding process is performed by the user's computer while the decoding program is downloaded from the postal service server 10 and installed. 12 relates to a server-based decoding method, which refers to a method in which a decoding process is performed in the postal service server 10 in a state in which a decoding program is not installed in the receiver computer 17.

Referring to FIG. 10, when the receiver computer 106 receives a code image through the image device 105, it is stored in a code image storage device such as a memory or a disk drive. The code image is decoded into code information by the code image decoding engine, and the code information includes index information and service information. The index information is transmitted to the control server 107, and the server engine searches the address database to find address information corresponding to the index information, and the address information is transmitted to the recipient computer 106. The receiver computer 106 may run the service program according to the address information and the service information to request the service from the information providing server 108 to receive the service.

Referring to Fig. 11, when the receiver computer 116 receives a code image through the image device 115, it is stored in the code image storage device. The code image is decoded into code information by the code image decoding engine, and the code information includes information as shown in FIGS. 8A to 8C. Then, the receiver computer 116 may drive the service program according to the decoded result, access the information providing server 118, request a service, and receive the service. In this case, it can be seen that the process of receiving the information service by the user computer 116 is performed without a direct connection with the postal service server 10.

Referring to FIG. 12, when the receiver computer 126 receives a code image through the image device 125, it is stored in a code image storage device such as a memory or a disk drive. The code image is transmitted to the postal service server 127 and decoded into code information by the code image decoding engine. If the code information includes index information (index type decoding method), the address database is searched to find address information corresponding to the index information. If the code information is directly decoded, the database search process is skipped. The postal service server 127 sends the decoded information to the recipient computer 126. The receiver computer 126 may run a service program according to the decoded information and request a service from the information providing server 128 to receive the service.

The postal service method using a code image according to the present invention can be embodied as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, hard disk, floppy disk, flash memory, optical data storage device, and also carrier waves (for example, transmission over the Internet). It also includes the implementation in the form of. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

According to the present invention, a sender can send an electronic message in addition to a general postal service. In addition, by mapping the information contained in the image to the network address, information such as physically represented pictures and characters can be used to use the network service. For example, if the image device is photographed using a URL-encoded code or a character address of the URL, the network address can be immediately accessed. Therefore, the recipient who receives the mail can reply via e-mail through the URL attached to the code, and can save and manage already made images or their decoded information in the storage device so that they can be applied in more fields. have. You can also write a secret message and share it with each other. In addition, a variety of postal services may be provided by linking with a postal service company or a general store.

Claims (27)

In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, (a) displaying, by the postal service server, a plurality of postal media in an image form to a sender and receiving a postal media image from the sender; (b) receiving a selection of a server providing information to be attached from a sender; (c) the mail service server converting information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And (d) transmitting, by the postal service server, both the selected postal medium image and the code image to the sender in physical form, in electronic form or only the postal medium image in physical form, and the code image in electronic form. Postal service method comprising a. The method of claim 1, wherein step (b) And a sender composing a message to the receiver at the information providing server. The method of claim 1, wherein step (b) And the sender composing a message to be printed on the mail carrier. The method of claim 1, wherein step (d) If the received mail medium image and code image are physically represented, the sender physically delivers them to the receiver. The method of claim 1, wherein step (d) If the received mail medium image and code image is an electronic form, the sender further comprises the step of producing the mail medium image and code image in a physically expressed form and physically delivering to the recipient. The method of claim 1, wherein step (d) If the received mail medium image and code image are in electronic form, the sender further comprises transmitting them in electronic form to the recipient via the network. The method of claim 1, wherein step (d) If only the mail medium image of the received mail medium image and the code image is expressed in physical form, the sender further comprises the step of printing the code image and attaching it to the physical mail medium to deliver to the recipient. The method according to any one of claims 1 to 7, wherein the code image is An image having a predetermined shape, color, pattern, or a combination thereof generated by converting one or more letters or numbers included in the code information by a predetermined code conversion table for mapping each letter and number to a predetermined color, respectively. Postal service method. In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, (a) representing a plurality of postal media in the form of images, and distributing each postal media image as a physical postal medium; (b) the sender purchases the distributed mail medium; (c) selecting a server providing information to which the sender wishes to attach; (d) converting the information including at least network address information of the information providing server selected by the sender into a code image physically represented according to a predetermined algorithm; And (e) a sender comprising the step of attaching the code image to a purchased mail carrier and delivering it to a receiver. The method of claim 9, wherein step (c) And a sender composing a message to the receiver at the information providing server. The method of claim 9, wherein the code image is An image having a predetermined shape, color, pattern, or a combination thereof generated by converting one or more letters or numbers included in the code information by a predetermined code conversion table for mapping each letter and number to a predetermined color, respectively. Postal service method. In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, (a) displaying, by the postal service server, a plurality of postal media in an image form to a sender and receiving a postal media image from the sender; (b) selecting a server providing information to be attached from the sender and receiving a recipient address; (c) the mail service server converting information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And and (d) the postal service server producing the selected postal medium image and the coded image in a physically expressed form, and delivering the same to the receiver. The method of claim 12, wherein step (b) And a sender composing a message to the receiver at the information providing server. The method of claim 12, wherein step (b) And the sender composing a message to be printed on the mail carrier. The method of claim 12, wherein the code image is An image having a predetermined shape, color, pattern, or a combination thereof generated by converting one or more letters or numbers included in the code information by a predetermined code conversion table for mapping each letter and number to a predetermined color, respectively. Postal service method. Recipient who receives the postal media with the code image through the postal service server that converts the network address information of the server providing the predetermined information into the code image according to a predetermined algorithm, receives the information from the information providing server using the postal media. In the way of receiving service, (a) a recipient inputting a code image attached to the postal medium; (b) extracting predetermined code information embedded in the code image by decoding the input code image according to an algorithm provided by the postal service server; (c) checking the extracted code information and accessing an information providing server connected to the code information by running an embedded service program; And (d) receiving an information service using a postal medium, the method comprising receiving a service from the information providing server. The method of claim 16, wherein step (b) (b1) installing a decoding program provided by the postal service server on a recipient computer; And and (b2) decoding the code image at a receiver computer using the decoding program to extract predetermined code information embedded in the code image. The method of claim 16, wherein step (b) (b1) transmitting the code image from the recipient computer to the postal service server; (b2) the postal service server decoding the code image by using a decoding program and extracting predetermined code information embedded in the code image; And (b3) transmitting the extracted code information from the postal service server to the recipient computer. The method of claim 16, wherein step (c) (c1) if the address information included in the code information is an index, the postal service server finds a network address connected to the index and transmits it to the recipient computer; And and (c2) the recipient computer accessing an information providing server connected to the network address by running the service program. The method of claim 16, wherein step (c) (c1) if the address information included in the code information is a network address or a URL address, automatically or manually setting the corresponding network address or URL address; And (c2) a mail information service method comprising the step of accessing an information providing server having a network address set by driving the service program. Sender computer; An information providing server providing predetermined information to a user connected through a network; Displaying a plurality of postal media in an image form to a sender connected through the sender computer, selecting a postal media image from the sender, transmitting the selected postal media image, and calculating network information of the information providing server requested from the sender A postal service server converting the code image according to; And And a postal media server for producing a postal media image received from the postal service server as a physical postal medium. A postal service apparatus for attaching the code image to the physical postal media and delivering the image to a receiver. The method of claim 21, A receiver computer which inputs a code image attached to the delivered mail medium, decodes the code image according to an algorithm provided by the postal service server, and accesses an information providing server corresponding to the network information included in the decoded code information. A postal service device further comprising. The method of claim 22, wherein the postal service server A mail medium database for storing the mail medium image, an address database for storing address information corresponding to the information providing server requested by the sender and index type code information corresponding thereto; And if the code information input to the recipient computer is index type code information, the recipient computer connects to the postal service server and receives address information stored in the address database referred to by the index type code information. In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, Displaying, by the postal service server, a plurality of postal media in an image form to the sender, and receiving a postal media image from the sender; Selecting a server providing information to be attached from a sender; The mail service server converting the information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And In the computer, the postal service server transmits the selected postal medium image and the code image to the sender in the form of physical representation, electronic form or the physical representation of only the postal media image, and the code image in electronic form. A computer-readable recording medium that records a program for execution. In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, Displaying a plurality of postal media in the form of images, and distributing each postal media image as a physical postal medium; The sender purchases the distributed mail medium; Selecting a server providing information to which the sender wishes to attach; The mail service server converting information including at least network address information of the information providing server selected by the sender into a code image physically represented according to a predetermined algorithm; And A sender is a computer-readable recording medium having recorded thereon a program for executing a step of attaching the code image to a purchased mail medium and delivering it to a recipient. In a method for providing a postal service to a user connected via a network, a postal service server providing a postal medium, Displaying, by the postal service server, a plurality of postal media in an image form to the sender, and receiving a postal media image from the sender; Selecting a server providing information to be attached from a sender and receiving a receiver address; The mail service server converting the information including at least network address information of the information providing server selected by the sender into a code image according to a predetermined algorithm; And The mail service server may be a computer-readable recording medium having recorded thereon a program for executing the step of producing the selected postal medium image and code image in a physically expressed form, and delivering the same to a recipient. Sender Receiving a mail medium to which the code image is attached through a postal service server that converts network information of a server providing information to be attached to a code image according to a predetermined algorithm, from the information providing server using the mail medium. In the method of receiving information, A receiver inputting a code image attached to the postal medium; Extracting predetermined code information embedded in the code image by decoding the input code image according to an algorithm provided by the postal service server; Checking the extracted code information and accessing an information providing server connected to the code information by driving an embedded service program; And A computer-readable recording medium having recorded thereon a program for executing a step of receiving a service from the information providing server on a computer.