KR20040081999A - A certification of contents service method using a digital set-top box and internet - Google Patents

Abstract

PURPOSE: A system and a method for contents certification linking with a digital set-top box and the Internet are provided to shorten a time needed for delivery and confirm a delivery result in a short time by transmitting the contents certification to a receiver and a sender as a document through the on/offline. CONSTITUTION: A sender system(200) includes a personal terminal for editing/transmitting a contents certification document, and the digital set-top box displaying the A/V(Audio/Video) or the delivery information for the contents certification received through the VDSL(Very high-data rate Digital Subscriber Line) on the TV in real-time. A post office system(300) prints the contents-certified mail received through the Internet(500), delivers the mail to the sender and the receiver(400) after printing a post office mark to the mail, stores one copy, and transmits the delivery result to an operator system(100). The operator system transmits the contents certification document transmitted from the personal terminal to the post office system and transmits the delivery result received from the post office system to the digital set-top box of a sender system.

Description

A certification of contents service method using a digital set-top box and internet}

The present invention relates to a content verification system and a service method using a digital set-top box, and more particularly, it is possible to deliver content proofs at a faster time by linking online and offline, as well as the cost of delivering content proofs. The present invention relates to a content verification system and a service method using a digital set-top box that can facilitate the management of costs by billing a smart card installed in a digital set-top box or a digital set-top box.

The method of content verification is used as a registered mail system that the post office publicly proves that the sender sent a document to the recipient at any time.

These proofs of evidence are used to assist in litigation or trial as evidence of when the disputes between the parties later occurred, such as changes in the obligations of the rights, such as the supreme, approval, delegation, and cancellation of various rights. A record must be kept as a system to give.

In order to send such certified mail, three documents should be sent to the post office and received by the sender, one of which will be received by the sender, one of which will be kept at the post office and the other to the recipient. By service.

As for the method of sending such certified mail, the sender should visit the post office and receive the certified mail. Therefore, the contents mail should be delivered to the addressee by registered mail. Therefore, the sender has to wait several days to confirm whether or not the certified mail has been delivered. As a result, it was troublesome to guess whether the contents mail was delivered to the recipient or to check whether the mail was delivered to the post office.

In addition, there was a problem in the post office that a lot of time and manpower was consumed in order to answer the confirmation of whether the required contents mail is sent from the sender.

In addition, if the addressee's address is different from the sender's address, the mail is delivered from the post office where the mail was received by the sender to the post office where the payee resides. there was.

On-line contents verification system and method have been developed to solve the problem of contents proof mail delivery through off-line as described above. Not only was the ability of the evidence received to be a problem, but the sender or recipient who did not have an online service had to be excluded from the service and had to send and receive the proof of content in a conventional manner.

The present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to link the on-line and the off-line so that the proof of content can be delivered to the addressee and the sender as a document. A content verification service system linking the digital set-top box and the Internet, which enables the mutual retention of documents with the same evidence capabilities as those used in the offline contents verification of the service, and the quick time to check the delivery time and the delivery result. The purpose is to provide a method.

Another object of the present invention is that the sender can facilitate the cost management, and the post office can send the proof of content in batches, because it can be billed together with the delivery cost of proof of content when billing according to the service item provided through the digital set-top box The purpose of the present invention is to provide a content verification service system and method in which a digital set-top box is connected to the Internet so that the work can be efficiently performed.

1 is a block diagram showing an example of a content verification system according to the present invention,

2 is a block diagram showing an example of the operator system in the contents verification system according to the present invention,

3 is a block diagram showing an example of a sender system in the contents verification system according to the present invention,

Figure 4 is a block diagram showing an example of the sender DB configured in the operator system in the content verification system according to the present invention,

5 is a block diagram showing an example of the post office DB configured in the operator system in the contents verification system according to the present invention,

6 is a block diagram showing the structure of the proof data transmitted from the operator system to the post office system in the proof contents system according to the present invention,

7A to 7C are diagrams showing different examples of the configuration of a television screen configured in the sender system in the contents verification system according to the present invention;

8 is a block diagram showing an example of a digital set-top box used in the content verification system according to the present invention,

9 is a flowchart illustrating an example of a service providing method by a content verification system according to the present invention.

※ Explanation of code for main part of drawing

100 .. Operator system 110. Sender DB

120 .. Post Office DB 130 .. Form DB

140 .. Management DB 150 .. Data transmission and reception system

200. Sender System

210 .. Personal terminal 220. TV

230 .. Digital Set Top Box

300 .. Post Office System

400. Recipient 500. Internet

In the object of the present invention as described above in the proof delivery system using a communication system comprising a digital set-top box,

Includes a personal terminal that edits and transmits content proof documents, and displays information on the television in real time about whether video, audio, or content proofs are delivered, delivered via VDSL, with a unique number, detachably installed on the television. A sender system having a digital set-top box for use;

Equipped with a communication system using the Internet or a dedicated line, it prints the contents mails received online, displays the post office certification mark, and then delivers them to the recipient and the sender offline, and keeps a part thereof. A post office system for transmitting to the operator system;

The digital set-top box and the personal terminal of the sender system are connected online with the post office system to transmit the contents proof document transmitted from the sender's personal terminal to the post office system, and transmit the result of the transmission from the post office system to the post office system. A sender database having information related to the sender of the sender system having the digital set-top box, a post office database having information related to each post office system; This is accomplished by a content set-up system using a digital set-top box that includes an operator system having a management database that manages the sending of content proofs sent from the sender system to the recipient and to the sender and stored within the post office system.

In addition, an object of the present invention is to provide a method of content verification in connection with offline and the communication network connected to the digital set-top box,

The sender enters the proof contents to be transmitted to the operator system and transmits them to the operator system;

The operator system reconfirms the proof entered from the sender system to the sender, instructs the sender of the cost of delivering the confirmed proof, requests for payment, and the sender makes the payment;

Retrieving the seal of the sender previously stored in the sender database of the operator system, attaching the proof sent from the sender system, and sending it to the post office system;

Printing three copies of the document containing the sender's seal sent from the operator system, archiving one of them, and delivering the other two to the sender and the recipient, respectively;

Transmitting, at the post office system, the result of the proof of content to the operator system, and the operator system transmitting the result to the television of the sender system through the digital set-top box and confirming the result;

Verifying the contents displayed on the television through the digital set-top box of the sender system and transmitting the confirmation back to the operator system by pressing a predetermined button on the remote control for controlling the television. By the method.

Hereinafter, with reference to the accompanying drawings will be described with respect to the content verification system and method using a digital set-top box according to the present invention.

1 is a block diagram showing an example of the content verification system according to the present invention, Figure 2 is a block diagram showing an example of the operator system in the content verification system according to the present invention, Figure 3 is a content according to the present invention Figure 4 is a block diagram showing an example of the sender system in the authentication system, Figure 4 is a block diagram showing an example of the sender DB configured in the operator system in the content verification system according to the present invention, Figure 5 is according to the present invention FIG. 6 is a block diagram showing an example of a post office DB configured in an operator system in a content proof system, and FIG. 6 is a block diagram showing a structure of content proof data transmitted from an operator system to a post office system in a content proof system according to the present invention. 7A to 7C show different examples of the configuration of a television screen configured in the sender system in the contents verification system according to the present invention. And the time limit diagram, Figure 8 is a block diagram showing an example of a digital set-top boxes used in the content proving system according to the present invention.

As shown, the postal system according to the present invention includes an operator system 100, a sender system 200, and a post office system 300.

In addition, the content verification system according to the present invention has a recipient 400 that receives the content certificate sent from the broadcaster system 200, the operator system 100, the sender system 200, the post office system 300 is the Internet ( 500) or a dedicated line.

The operator system 100 is connected to the sender system 200 and the post office system 300 as a system for providing contents verification service according to the present invention, and is to be installed in the same space as the post office system 300. Can be.

The operator system 100 has one or more databases and is connected to the digital set top box 220 of the sender system 200 by a predetermined communication line as described above.

The database provided in the operator system 100 includes a sender database 110 and a post office database 120. The sender database 110, as shown in FIG. Information such as a name, a unique number of a digital set-top box provided by the sender system 200, a resident registration number of the sender, a seal of the sender, a card number, a card credit history, a phone number, and the like are stored.

The seal of the sender stored in the sender database 110 of the operator system 100 is a seal of the sender as an authentication means obtained from the sender when the sender requests the service of proof of the present invention or requests a service using a digital set-top box. Or signature or certification number for each digital set-top box.

The post office database 120 is a database that manages information about each post office, and stores information on a mail sending area under the jurisdiction of the post office, as well as information related to the name, address and email of each post office.

In the above, the post office system 300 and the operator system 100 may be connected by using the Internet or a dedicated line, and the operator system 100 may be integrally configured as a part of the post office system 300 as described above.

The operator system 100 further includes a form database 130 having a form for providing convenience when the sender inputs the contents of the contents certificate, and a management database 140 for managing the contents mail. .

The form database 150 may be provided as a homepage of an operator system through the Internet.

The management database 140 is a database for managing the delivered contents mail as well as providing information about the contents provided by the operator system to the sender system 200 or managing information to be sent to the sender. It is a database that stores the proof contents transmitted from the sender system 200, recalls the sender seals previously stored in the sender database, and inserts them into the contents certified mail.

In addition, the operator system 100 is provided with a data transmission and reception system 130 for communicating with the digital set-top box 230 and the personal terminal 210 of the sender system 200, the digital set-top box 230 and The personal terminal 210 and the data transmission / reception system 150 are bidirectional communication systems capable of mutual transmission and reception.

The sender system 200 includes a general communication system including a personal terminal 210 that can be connected to the Internet network, and a television 220 in which the digital set-top box 230 is detachably installed.

The personal terminal 210 is a computer in which a communication modem is installed, which may vary depending on the size of the sender system, and may include a plurality of terminals connected by a LAN.

The digital set-top box 230 installed in the user system 200 is a card reader function as a means for displaying a variety of information transmitted from an operator system, for example, information on a delivery result of an image, sound, or certified mail on a television screen. It can have the function of the credit card or the built-in function of the credit card, it has a unique number can be a single payment means, the television 220 can be turned on / off and the channel can be transmitted as well as transmitted from the television remote control. Can be controlled by a signal.

In addition, the digital set-top box 230 may be used by installing a smart card having the function of a credit card.

The television 220 may be configured with a main display window and a sub display window. An image provided through the digital set-top box 230 is displayed on the main display window, and information related to the delivery of contents proof is displayed on the sub display window.

The sub display window may be displayed in the form of subtitles on a part of the main display window so as to overlap the main display window, but information related to the delivery of the content certificate may be displayed on the entire screen according to the user's intention.

One side of the information related to the delivery of the proof of content displayed on the television is preferably provided with a means for notifying the operator system that the sender has confirmed the delivery message. The sender can select and confirm the number or letter by clicking on the remote control or the button on the TV.

The post office system 300 is connected to the operator system 100 using the Internet or a dedicated line or other connection means as described above.

As described above, when the operator system 100 is integrally configured as a part of the post office system 300, the operator system 100 may be connected by one or more data transmission cables.

The post office system 300 is provided with an authentication means capable of displaying the post office certification mark on the contents verification.

The post office system 300 is equipped with an off-line delivery system as described above.

This off-line system, as also indicated in the objective of the present invention, is transmitted from the sender online to the post office in a way to solve the problem of not recognizing the evidence capability of the presently transmitted and printed document. It is a means for delivering the proof of content as a document to the sender 400 as well as the sender.

The post office system 300 may be connected to the operator system online as described above to notify the operator system of the delivery after delivering the contents proof mail.

The digital set-top box 230 provided in the sender system 200 is a two-way transmission / reception apparatus for receiving a user-selected content (video) using a VDSL and displaying it on a television in real time. It is connected to the operator system 100 via a (high speed digital subscriber line).

Digital set-top box 230 used in the present invention is configured as shown in FIG.

The digital set-top box 230 receives an analog audio / video signal input from various types of audio / video input means (eg, a television tuner, a movie camera, a VTR, a cable broadcast, a satellite broadcast, a CCD camera, a microphone, etc.). A plurality of analog / digital converters (ADCs) for receiving and converting them into digital signals; The audio / video signal of any one channel selected from the audio / video signals of the multiple channels provided from the analog / digital converters is output through the storage signal output port, and the audio / video signals and MPEG of the multiple channels are output. An audio / video switching unit for outputting the decoded audio / video signal through the audio / video signal output port; An MPEG encoder which receives an audio / video signal output through the storage signal output port of the audio / video switching unit and encodes the MPEG; A storage unit in the form of a hard disk drive (HDD) in which audio / video signals encoded by the MPEG encoder are stored, and MPEG contents input through a VDSL line or a LAN line are stored; A sub-control unit which stores the output data from the MPEG encoder and the MPEG contents input through the VDSL line or the LAN line to the storage unit, and outputs the data stored in the storage unit; A main control unit for providing a control command for storing and outputting data to the storage unit to the sub control unit, and controlling a corresponding operation based on a remote signal from the remote control received from the remote control receiving unit; An MPEG decoder which MPEG-decodes the data output from the sub-controller and transmits it to the audio / video switching unit; A screen generator for making a video signal of any one channel among the video signals of the plurality of channels from the audio / video switching unit as a main screen and a video signal of other channels as a sub picture; Compare the contents of the 24-bit overlay memory of RGB 8: 8: 8 to a specific color key value (i.e. the color key value corresponding to the OSD character (or picture) required for the screens to be output). An OSD synthesizing unit that implements an appropriate graphic OSD on the screen from the screen generating unit; A video output section for displaying a video screen from the OSD synthesizing section on a television monitor (not shown); An audio digital / analog converter for analog converting the audio signal of the active channel to the main screen provided by the audio / video switching unit; An audio output unit for outputting audio from the audio digital / analog conversion unit to the outside through a speaker of a television (not shown); RAM that stores the code of the operating program required for the digital set-top box; And a ROM in which all programs related to driving and control of the digital set-top box are stored.

Here, the audio / video switching unit, the sub control unit and the OSD synthesis unit are field programmable gate arrays (FPGAs) which are a type of programmable logic chip.

The main control unit and the sub control unit communicate with each other via a local bus. The ROM additionally stores personal information (eg, name, address, social security number, email address, etc.) of the person using the digital set-top box.

In FIG. 8, the screen generating unit, the OSD synthesizing unit, the image output unit, the audio digital / analog converting unit, and the audio output unit are collectively referred to as a plurality of channels of audio and video output from the audio / video switching unit. It is called audio / video output means outputted according to a user's selection condition under control of the controller.

The MPEG encoder has a built-in first-in-first-out (FIFO) buffer (not shown), and the secondary controller directly accesses the buffer of the MPEG encoder, and the main controller processes only the control command. The main control unit processes only the control command and the address index for the storage unit, and the sub control unit is in charge of the remaining large burst transmission.

In addition, in FIG. 8, the VDSL line realizes VOD through the VDSL line as a telephone line, and the LAN line is composed of two Internet lines as the Internet line. A network interface card (NIC) is installed between the VDSL line and the two LAN lines and the local bus.

Network interface cards allow digital set-top boxes and networks to be connected at all times. The network interface card connected to the two internet lines is provided with a network address translation (NAT) function, which is used as a home gateway device. In other words, if the user is not in a VDSL environment, the user may use the digital set-top box of the present invention by directly connecting to an Internet line (ie, a LAN line).

In addition, the ROM of FIG. 1 includes VOIP software for enabling a digital set-top box to perform Voice Over Internet Protocol (VOIP) function, and a SLIC (SUBSCRIBER LINE INTERFACE CIRCUITS) on a local bus to perform the VOIP function. One output is connected and the other output of the SLIC is connected to an audio / video switching section.

The SLIC outputs an analog audio signal input as a digital audio signal. The digital audio signal output from the output terminal of the SLIC is input to the audio / video switching unit and also to the main control unit via the local bus.

The main control unit controls the VOIP function based on the VOIP software after storing the VOIP software stored in the ROM when the digital set-top box is powered on. Therefore, the digital set-top box of FIG. 8 also serves as a VOIP phone. That is, the digital set-top box of FIG. 8 has a built-in VOIP function for transmitting voice and video using IP.

The audio / video signal input from the audio / video input source (ie, the signal input through the analog / digital converter) is composed of an RCA input and a super video (S-video), and one of the four input sources is input. Only the audio / video signal of the source is stored in the storage unit via the MPEG encoder and the sub-controller according to the command of the main controller. Since the four input sources are transmitted to the screen generating unit in real time, they are displayed in a combination of up to three channels while displaying the stored contents.

In addition, the digital set-top box 110 can be selected and used in a VDSL telephone environment or a LAN environment capable of high-speed communication of up to 25 megabits per second and 12 megabits per second in both directions, and when a network is selected, a server (not shown) is selected. Through updating the latest content information and the data required by the user's request is provided. In addition, to facilitate multi-tasking, data input through the network is stored in a hard disk drive (HDD) storage for temporal buffering, and then read from the storage, and the MPEG decoder and audio / video switching unit It is transmitted to the screen generation unit through.

The digital set-top box 110 configured as described above may be provided with various contents as desired through a VDSL line or a LAN line as well as a normal PVR function, and may also be output.

Hereinafter, a method of providing a content verification service by a content verification system using a digital set-top box according to the present invention configured as described above will be described.

9 illustrates an example of a process of providing a service using a content verification system according to the present invention.

As shown, the service providing method according to the present invention

The sender may be divided into a process of transmitting the content certificate and a process of confirming whether the content certificate is served.

First, the transmission process will be described.

The transmission process begins with a communicable personal terminal configured in the sender system.

The sender can access the operator system through the Internet network and enter the contents of the proof contents and the recipient's personal information through an e-mail or a content identification form displayed on a web page of the operator system.

In this case, if the sender does not limit the form of the content proof, the operator system edits the content of the content proof according to the normal content proof form.

The operator system checks the recipient's address and name from the transmitted proof of content and sends the content of proof of content back to the sender to verify that it is correctly represented.

If it is confirmed by the sender that the contents of the proof of contents has been accurately recorded, the operator system sends the details of the expenses required for the sending of the proof of contents to the sender's terminal to notify the sender and requests a payment.

After the sender approves the payment, the operator system checks the post office that has jurisdiction over the recipient information from the received receipt information from the sent contents mail, extracts it from the post office database, and uses the online means such as a leased line to apply the contents proof. Transfer to the post office system.

At this time, the operator system transmits an authentication means such as a seal of the sender previously stored in the sender database provided therein, attached to one side of the contents certificate.

The post office system prints the content certificate sent from the operator system, seals the authentication means of the post office and delivers it to the recipient.

In the above process, the post office system may pre-store and store the authentication means in the system. In the case where the pre-stored authentication means is used, the post office system may print after printing the authentication means on a part of the content certificate before printing the content certificate.

Deliver the proof of contents to the addressee and confirm the result with the sender.

The post office system transmits the delivery result to the operator system online, and the message about the delivery result is transmitted to the sender system's digital set-top box via the operator system's data transmission / reception system.

The transmitted result report message is stored in the digital set-top box, and the sender with the digital set-top box turns on the television and turns on the digital set-top box, together with the VOD image continuously transmitted by the data transmission / reception means of the operator system. Displayed on the TV screen.

The type of information displayed at this time is as shown in Figs. 7A to 7C.

That is, it may be displayed in the form of a subtitle at the bottom of the display window or in the sub-display window, may be greatly overlapped on the entire screen, or only a delivery message may be displayed on the entire screen, and one side of the sender may inform whether or not to confirm. The operator system indicates whether or not the sender has confirmed the delivery by displaying a number or letter requesting the delivery, ie, a number or letter requesting the delivery confirmation and clicking on the sender.

In the process of delivering the service message, in particular, when the service of the contents certificate is not normally performed, the sender can confirm the reason why the service is not performed and whether or not the service is re-delivered by displaying on the entire display window.

In the above process, the payment of the expenses required for the service of proof of contents may be made before or after the service, but the charges and settlement of the necessary expenses are made based on the prepayment in consideration of the normal mail delivery process using offline. desirable.

That is, a method of accumulating a predetermined cost in an account of a smart card having a credit card function installed in a corresponding digital set-top box or a digital set-top box, and then deducting each delivery of a mail may be used. Post payment is also possible.

The payment process may be billed to the unique number of the sender's digital set-top box or the smart card installed in the digital set-top box in the process of confirming and confirming the mail to be sent. You can check it.

As described above in detail, according to the present invention, by delivering the content proof by connecting on-line and off-line, it takes a long time to deliver the content proof using the existing off-line. It solves the shortcomings, and when delivering the contents proof through the existing on-line, there is an effect that can solve the problem of the proof ability of the contents delivered.

In other words, by sending the contents of the proof of contents which you want to send over the Internet to the relevant post office where the recipient resides, and delivering the written proof of contents to the recipient and the sender by offline from the sender to the relevant post office to which the recipient belongs. It can reduce the time required to deliver the proof of contents, and it can be quickly and easily checked without receiving a separate verification process by receiving the information sent to the recipient through the DELEVISION associated with the digital set-top box. Not only does it work,

In practice, the sender and the receiver can increase the credibility of the content by exchanging written content.

In addition, according to the diversification of life, the sender (user) must receive and handle many kinds of billing notices, but the sender can use the digital set-top box of the present invention to settle the contents proof charge collectively. Cost management can be facilitated, and the post office can be handled collectively in the operator system without incurring a charge for content verification, thereby facilitating the processing of billing.

The present invention is not limited only to the above-described embodiments, but may be modified and modified without departing from the scope of the present invention, and the technical spirit to which such modifications and variations are applied should also be regarded as belonging to the following claims. .

Claims (10)

In the proof delivery system using a communication system including a digital set-top box, Includes a personal terminal that edits and transmits content proof documents, and displays information on the television in real time about whether video, audio, or content proofs are delivered, delivered via VDSL, with a unique number, detachably installed on the television. A sender system having a digital set-top box for use; Equipped with a communication system using the Internet or a dedicated line, it prints the contents mails received online, displays the post office certification mark, and then delivers them to the recipient and the sender offline, and keeps a part thereof. A post office system for transmitting to the operator system; The digital set-top box and the personal terminal of the sender system are connected online with the post office system to transmit the contents proof document transmitted from the sender's personal terminal to the post office system, and transmit the result of the transmission from the post office system to the post office system. A sender database having information related to the sender of the sender system having the digital set-top box, a post office database having information related to each post office system; A content identification system using a digital set-top box that includes an operator system having a management database that manages the shipment of proof of content that is transmitted from the sender system to the recipient and to the sender and stored within the post office system. 2. The apparatus of claim 1, wherein the digital set-top box comprises: a plurality of analog / digital converting means for receiving and converting audio / video signals from a plurality of audio / video input sources; The audio / video signal of any one channel selected from the audio / video signals of the plurality of channels provided from the plurality of analog / digital converting means is output through a storage signal output port, and the audio / video signal and MPEG of the plurality of channels are decoded. Audio / video switching means for outputting an input audio / video signal through an audio / video signal output port; An MPEG encoder which receives an audio / video signal output through the storage signal output port of the audio / video switching means and encodes the MPEG; Storage means for storing an audio / video signal encoded by the MPEG encoder and storing MPEG content input through a VDSL line or a LAN line; Sub-control means for storing output data from the MPEG encoder and MPEG contents input through the VDSL line or LAN line to the storage means, and outputting the data stored in the storage means; Main control means for providing a control command for storing and outputting data to said storage means to said sub control means, and controlling a corresponding operation based on a remote signal from a remote controller; MPEG decoder for decoding MPEG data output from the secondary control means to the audio / video switching means; And Proof of contents using a digital set-top box characterized in that the audio / video output means for outputting the audio and video of the plurality of channels output from the audio / video switching means according to the user's selection conditions by the control of the main control means system. The system of claim 1, wherein the television has a main display window and a sub display window, and the sub display window has a subtitle form on one side of the main display window. According to claim 1, wherein the sender database provided in the operator system includes information such as the sender's name or name, the unique number of the sender's digital set-top box, the sender's seal, the sender's social security number, the sender's address, the sender's telephone number, etc. Content identification system using a digital set-top box, characterized in that the storage. The postal system according to claim 1, wherein the operator system can be integrated with the post office system in the post office system, and the post office system with the operator system is a central post office. 2. The content verification system according to claim 1, wherein the operator system further comprises a form database for designating a format and the like of the content proof document transmitted from the sender system. The system of claim 1 or 2, wherein the digital set-top box has a card terminal function and has a smart card having a credit card function. In the method of delivering proof of contents made by linking a communication network connected to a digital set-top box and offline, The sender enters the proof contents to be transmitted to the operator system and transmits them to the operator system; The operator system reconfirms the proof entered from the sender system to the sender, instructs the sender of the cost of delivering the confirmed proof, requests for payment, and the sender makes the payment; Retrieving the seal of the sender previously stored in the sender database of the operator system, attaching the proof sent from the sender system, and sending it to the post office system; Printing three copies of the document containing the sender's seal sent from the operator system, marking the post office with certification, storing one copy and delivering the remaining two copies to the sender and the recipient; Transmitting, at the post office system, the result of the proof of content to the operator system, and the operator system transmitting the result to the television of the sender system through the digital set-top box and confirming the result; Verifying the contents displayed on the television through the digital set-top box of the sender system and transmitting the confirmation back to the operator system by pressing a predetermined button on the remote control for controlling the television. Way. The method according to claim 8, wherein the required cost of delivering the contents mail in the contents verification method is charged to a smart card having a unique number assigned to the digital set top box of the sender system or a credit card function installed in the digital set top box. Content verification method using a digital set-top box characterized in that the payment. 10. The method of claim 8, wherein the information on whether or not to deliver the content proof is displayed on the entire television screen or in the form of subtitles.