CN102217319B - Advertisement insertion method, device and system - Google Patents

Abstract

The embodiment of the invention discloses an advertisement insertion method, device and system. The method includes: the advertisement inserting device obtains the advertisement period information in the media content; obtains the advertisement content corresponding to the advertisement period; updates the first check value with the second check value, and the first check value is based on the The check value obtained by the media content and the encryption algorithm, the second check value is the check value obtained according to the advertisement content and the encryption algorithm; insert the advertisement content during the advertisement period; forward the inserted advertisement The media content of the content. By adopting the technical solution provided by the embodiment of the present invention, the monitoring problems of content being illegally tampered with, deleted or replaced, and legal advertisement insertion can be solved.

Description

Advertisement insertion method, device and system

technical field

The invention relates to the field of network communication, in particular to an advertisement insertion method, device and system.

Background technique

With the development of the network and the intensification of competition, IPTV (Internet Protocol Television, Internet TV) operators must deploy new and personalized services to meet the needs of different customers. For example, regionally-targeted ad insertion and precise positioning of advertisements are realized through ad insertion technology. At the same time, IPTV content monitoring is an important part of IPTV operation. In IPTV operation, it is necessary to ensure that the content provided by IPTV is not illegally tampered with, deleted or replaced during the transmission process. Once the content is illegally tampered with, deleted or replaced, it must be found in time. Therefore, how to prevent illegal content tampering, deletion or replacement in the IPTV network while ensuring legal advertisement insertion has become a difficult problem to be solved.

Contents of the invention

Embodiments of the present invention provide an advertisement insertion method, device and system to solve the problems of advertisement insertion monitoring and content being illegally tampered with, deleted or replaced.

In order to solve the above technical problems, an embodiment of the present invention provides an advertisement insertion method, including:

The advertisement inserting device obtains the advertisement period information in the media content;

Obtaining the advertisement content corresponding to the advertisement period;

Update the first check value with the second check value, the first check value is a check value obtained according to the media content corresponding to the advertisement period and the encryption algorithm, and the second check value is based on the The verification value obtained from the advertisement content and the encryption algorithm;

inserting the advertisement content in the advertisement slot in the media content;

Forwarding the media content inserted into the advertisement content.

An embodiment of the present invention provides an advertisement insertion device, including:

The obtaining module is used to obtain the advertisement period information of the media content; it is also used to obtain the advertisement content corresponding to the advertisement period;

An update module, updating the first check value with a second check value, the first check value is a check value obtained according to the media content and encryption algorithm, and the second check value is based on the advertisement The content and the verification value obtained by the encryption algorithm;

an insertion module, configured to insert advertisement content in the advertisement period in the media content;

A sender, configured to forward the media content inserted into the advertisement content.

An embodiment of the present invention provides an advertisement insertion system, including an advertisement insertion device and a monitoring center, wherein:

The advertisement inserting device is used to obtain the advertisement period information in the media content; obtain the advertisement content corresponding to the advertisement period; update the first check value with the second check value, and the first check value is based on the The check value obtained by the media content and the encryption algorithm, the second check value is the check value obtained according to the advertisement content and the encryption algorithm; the advertisement content is inserted into the advertisement period in the media content ; Forwarding the media content inserted into the advertisement content.

By adopting the technical solutions provided by the embodiments of the present invention, legal advertisement insertion can be supported and monitored, and content can be correctly transmitted to end users.

Description of drawings

FIG. 1 is a flowchart of an advertisement insertion method provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of an advertisement insertion information interaction provided by an embodiment of the present invention;

Fig. 3 is a block diagram of an advertisement insertion device provided by an embodiment of the present invention;

Fig. 4 is a block diagram of an advertisement insertion system provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

The embodiment of the present invention provides an advertisement insertion method, device and system. The method includes: the advertisement inserting device obtains the advertisement period information in the media content; obtains the advertisement content corresponding to the advertisement period; updates the first check value with the second check value, and the first check value is based on the The check value obtained by the media content and the encryption algorithm, the second check value is the check value obtained according to the advertisement content and the encryption algorithm; insert the advertisement content during the advertisement period; forward the inserted advertisement Content's media content. By adopting the technical solution provided by the embodiment of the present invention, the monitoring of advertisement insertion and the problems of illegal tampering, deletion or replacement of content can be solved.

In a cable TV network or an IPTV network, the program stream sent by the headend contains a fixed-length advertisement period, and the prompt information can be inserted through the broadcast, and the advertisement period information is included in the insert prompt information. The advertisement period is used to play advertisements, and the content of the advertisement period can be changed and replaced with different advertisement contents with the same duration.

The continuous video content in the program stream is divided into several GOPs (Group of Pictures, picture group). A GOP is a group of continuous pictures, mainly including intra coded frames or slices (Intra coded frames or slices), forward prediction Frames or strips (Predicted framesor slices), and bi-directional interpolation frames or strips (Bi-directional predictive frames or slices). For the convenience of description, the intra-coded frames or slices are collectively referred to as I frames, the forward prediction frames or slices are collectively referred to as P frames, and the bidirectional interpolation frames or slices are collectively referred to as B frames. A GOP always begins with an I frame, and a frame is marked with a sequence number or play time. In a video player, P frames, B frames, etc. depend on other frames for decoding and playback. Frames that will generally provide a reference for decoding other frames, or frames that can be decoded independently are called key frames, such as I-frames.

Referring to Fig. 1 , it is a flow chart of an advertisement insertion method provided by an embodiment of the present invention, and the method includes:

101: The advertisement insertion device acquires advertisement period information of the media content.

The advertisement insertion device may obtain the advertisement period information of the media content according to the advertisement insertion strategy stored locally.

The advertisement inserting device may also acquire the advertisement period information of the media content from other devices.

The advertisement insertion device may also monitor the media content, and when it detects that there is an advertisement period in the media content, acquire the advertisement period information of the media content. For example, it is monitored whether there is inter-play prompt information in the media content, and when the inter-play prompt information is detected, the advertisement period information is obtained from the inter-play prompt information.

Before obtaining the advertisement period information of the media content, the advertisement insertion device may obtain the first verification value of the media content. The first check value is based on the media content and an encryption algorithm, such as MD5 (Message Digest Algorithm, message digest algorithm fifth edition), SHA-1 (Secure Hash Algorithm, secure hash algorithm), etc., obtained verification check value.

The first check value can include each check value obtained according to each frame and encryption algorithm in the media content; it can also include each check value obtained according to the key frame and encryption algorithm in the media content value. The key frame refers to a frame that provides reference for decoding other frames, or a frame that can be decoded independently.

The advertisement insertion device may be a service gateway, a router, a switch, and the like. For example, service routers near terminals, edge routers, aggregation switches, edge switches, etc.

The first check value may be carried in the media content by the headend or other devices.

The first verification value may also be sent by the monitoring center to the advertisement insertion device through other means, such as a signaling channel.

The first check value may be encrypted or signed.

If the advertisement insertion device obtains the first verification value, the advertisement insertion device may verify the received media content to determine whether the media content has been illegally tampered with, deleted or replaced. The advertisement insertion device can obtain a local check value according to the locally received media content and encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device may run the encryption algorithm through hardware. The advertisement insertion device compares the local check value with the first check value. When the local check value is the same as the first check value, the check passes, and the advertisement insertion device forwards the media content. When the local check value is different from the first check value, the check fails. When the verification fails, the advertisement insertion device may send a verification failure warning message to the monitoring center, and the warning message may include the first verification value. The advertisement insertion device may also process the media content according to a monitoring policy, for example, stop forwarding the media content. The monitoring strategy can be issued by the monitoring center, or generated locally.

102: Obtain advertisement content corresponding to the advertisement period.

The advertisement inserting device may select a suitable advertisement from locally stored advertisement contents, and obtain corresponding advertisement contents, or may obtain advertisement contents from other devices, such as an advertisement server.

For example, when it is detected that there is an advertisement period in the media content, the advertisement insertion device sends an insertion request message to an advertisement server, and the advertisement insertion request message carries the advertisement period information. The advertisement server responds with an insertion response message to the advertisement insertion device. When the advertisement server determines according to the advertisement period information that the advertisement is allowed to be inserted in the advertisement period, the advertisement server sends a splicing request message to the advertisement inserting device, and the advertisement inserting device responds with a splicing response message to the advertisement server. The advertisement insertion device obtains the advertisement content corresponding to the advertisement period provided by the advertisement server.

The advertisement server may send advertisement decision information to the monitoring center, and the advertisement decision information includes advertisement period information and an indication of whether to allow the insertion (for example, OK indicates that the insertion is allowed, and NO indicates that the insertion is not allowed).

103: Update the first check value with the second check value.

The advertisement insertion device may obtain the second verification value according to the advertisement content and the encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device may run the encryption algorithm through hardware. If the first check value includes each check value obtained according to each frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to each frame in the advertisement content and the encryption algorithm. If the first check value includes each check value obtained according to the key frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to the corresponding key frame in the advertisement content and the encryption algorithm.

When the media content includes the first check value, the advertisement insertion device may update the first check value in the media content with the second check value, so that the downstream monitoring device The advertisement content part in the media content is verified according to the second verification value.

The advertisement inserting device may also send a check value update message, so that the downstream monitoring device updates the first check value with the second check value, and performs an update on the content in the media content according to the second check value. The ad content part is verified. The check value update message includes the second check value. The manner in which the advertisement insertion device sends a verification value update message to update the first verification value with the second verification value may be applicable to the case where the first verification value is carried in the media content, and may also be applicable to the case where the first verification value is carried in the media content. A check value comes from the situation of the monitoring center.

The verification value update message may also include the identity information of the advertisement insertion device, the advertisement period information, and the like.

The advertisement insertion device may send the verification value update message to the monitoring center, so that the monitoring center sends the second verification value to the downstream monitoring device, so that the downstream monitoring device uses the second verification value to update the The first checksum. When the check value update message contains the identity information of the advertisement insertion device, the monitoring center can judge whether the check value update message is legal according to the identity information. When the monitoring center determines that the verification value update message is legal, it sends the second verification value to the downstream monitoring device, so that the downstream monitoring device uses the second verification value to update the first verification value.

The advertisement insertion device may also send the verification value update message to the downstream monitoring device, so that the downstream monitoring device updates the first verification value with the second verification value. When the check value update message contains the identity information of the advertisement insertion device, the downstream monitoring device can judge whether the check value update message is legal according to the identity information. When the downstream monitoring device determines that the check value update message is legal, it updates the first check value with the second check value.

The identity information may be a digital certificate or a security association, and the monitoring center or downstream monitoring equipment may authenticate the advertisement insertion device according to the digital certificate or the security association. When the authentication passes, the check value update message is valid.

The identity information may also be a device address, such as an IP address, a MAC address, etc., and the monitoring center or downstream monitoring equipment may determine whether the advertisement insertion device is a trusted device based on the device address. When the advertisement insertion device is a trusted device, the check value update message is legal.

The monitoring center can also further judge whether the advertisement insertion is legal according to the advertisement period information. For example, when the verification value update message is legal, and the monitoring center determines that the advertisement insertion is allowed according to the advertisement period information and the advertisement decision information provided by the advertisement server, then the advertisement insertion is legal.

When the monitoring center receives the verification value update message, the monitoring center may respond to the advertisement insertion device with a verification value update response message. For example, the monitoring center responds with a verification value update response message, and the verification value update response message may carry OK to indicate that the advertisement insertion is legal, or carry NO to indicate that the advertisement insertion is not legal. The advertisement insertion device receives the check value update response message.

104: Insert advertisement content in the advertisement period.

The advertisement inserting device may insert advertisement content in the advertisement period through digital program insertion technology.

Optionally, the advertisement inserting device may also insert advertisement content in the advertisement slot when the advertisement insertion is legal after receiving the update response message from the monitoring center.

105: Forward the media content inserted into the advertisement content.

The advertisement insertion device forwards the media content inserted into the advertisement content.

For example, refer to FIG. 2 , which is a schematic diagram of information interaction of an advertisement insertion provided by an embodiment of the present invention. In the process of sending media content from the head end to the terminal, it will pass through advertisement insertion equipment and downstream monitoring equipment.

Step 1: The monitoring center sends the first verification value to the advertisement insertion device and the downstream monitoring device through a signaling channel.

Step 2: The head end sends the media content;

Step 3: The advertisement insertion device receives the media content, verifies the media content with the first verification value, and forwards the media content if the verification passes.

At the same time, the advertisement insertion device monitors whether there is an advertisement period in the media content.

Step 4: The downstream monitoring device receives the media content, verifies the media content with the first verification value, and forwards the media content to the terminal if the verification passes.

Step 5: When the advertisement insertion device detects the advertisement period, it sends an insertion request to the advertisement server, and the advertisement server responds with an insertion response message to the advertisement insertion device. When the advertisement server determines according to the advertisement period information that the advertisement is allowed to be inserted in the advertisement period, the advertisement server sends a splicing request message to the advertisement inserting device, and the advertisement inserting device responds to the advertisement server with a splicing response message. The advertisement insertion device obtains the advertisement content corresponding to the advertisement period provided by the advertisement server. The advertisement insertion device obtains the second verification value according to the advertisement content and the encryption algorithm.

The advertisement insertion device sends a verification value update message to the monitoring center, and the verification value update message includes the second verification value, the identity information of the advertisement insertion device and the advertisement period information.

Step 6: When the monitoring center passes the authentication of the advertisement insertion device according to the identity information of the advertisement insertion device, the advertisement insertion is legal; the monitoring center responds to the advertisement insertion device with a verification value update response message, allowing the advertisement insertion.

Step 7: The monitoring center sends the second verification value to the downstream monitoring equipment.

The downstream monitoring device updates the first check value with the second check value.

Step 8: The advertisement inserting device inserts advertisement content in the advertisement period, and forwards the media content inserted into the advertisement content.

Step 9: The downstream monitoring device receives the media content inserted into the advertisement content, and verifies the advertisement content in the media content according to the second verification value.

When the verification is passed, the media content inserted into the advertisement content is forwarded to the terminal.

The technical solution provided by the embodiment of the present invention can support and monitor legal advertisement insertion, and at the same time, through the verification of the media content, it can monitor whether the content is tampered with, deleted or replaced during the transmission process, ensuring that the content is correctly transmitted to the terminal user.

Referring to FIG. 3 , it is a block diagram of an advertisement insertion device provided by an embodiment of the present invention. The advertisement insertion device includes an acquisition module 201 , an update module 202 , an insertion module 203 and a transmitter 204 . in:

The obtaining module 201 is used to obtain the advertisement period information of the media content; it is also used to obtain the advertisement content corresponding to the advertisement period;

The update module 202 is configured to update the first check value with the second check value, the first check value is a check value obtained according to the media content and the encryption algorithm, and the second check value is the verification value obtained according to the advertisement content and the encryption algorithm;

The insertion module 203 is configured to insert advertisement content during the advertisement period;

The sender 204 is configured to forward the media content inserted into the advertisement content.

The advertisement insertion device may be a service gateway, a router, a switch, and the like. For example, service routers near terminals, edge routers, aggregation switches, edge switches, etc.

The obtaining module 201 may obtain the advertisement period information of the media content according to the locally saved advertisement insertion strategy.

The obtaining module 201 may also obtain the advertisement period information of the media content from other devices.

The advertisement insertion device may also monitor media content, and when it detects that there is an advertisement period in the media content, the acquiring module 201 acquires the advertisement period information of the media content. For example, it is monitored whether there is inter-play prompt information in the media content, and when the inter-play prompt information is detected, the advertisement period information is obtained from the inter-play prompt information.

The obtaining module 201 is further configured to obtain a first verification value of the media content before obtaining the advertisement period information of the media content. The first check value is a check value obtained according to the media content and the encryption algorithm.

The first check value may include each check value obtained according to each frame in the media content and an encryption algorithm, or may include each check value obtained according to a key frame in the media content and an encryption algorithm. The key frame refers to a frame that provides reference for decoding other frames, or a frame that can be decoded independently.

The first check value may be carried in the media content by the headend or other devices.

The first verification value may also be sent by the monitoring center to the advertisement insertion device through other means, such as a signaling channel.

The first check value may be encrypted or signed.

If the advertisement insertion device obtains the first verification value, the advertisement insertion device may verify the received media content to determine whether the media content has been illegally tampered with, deleted or replaced. The advertisement insertion can obtain a local verification value according to the locally received media content and encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device may run the encryption algorithm through hardware. The advertisement insertion device compares the local check value with the first check value. When the local check value is the same as the first check value, the check passes, and the sender 204 forwards the media content. When the local check value is different from the first check value, the check fails. When the verification fails, the advertisement insertion device may send a warning message to the monitoring center, and the warning message may include the first verification value.

The obtaining module 201 may select a suitable advertisement from locally stored advertisement contents to obtain the corresponding advertisement content, or obtain the advertisement content from other devices, such as an advertisement server.

For example, when it is detected that there is an advertisement period in the media content, the advertisement insertion device sends an insertion request message to an advertisement server, and the advertisement insertion request message carries the advertisement period information. The advertisement server responds with an insertion response message to the advertisement insertion device. When the advertisement server determines according to the advertisement period information that the advertisement is allowed to be inserted in the advertisement period, the advertisement server sends a splicing request message to the advertisement inserting device, and the advertisement inserting device responds with a splicing response message to the advertisement server. The obtaining module 201 obtains the advertisement content corresponding to the advertisement period provided by the advertisement server.

The advertisement server may send advertisement decision information to the monitoring center, and the advertisement decision information includes advertisement period information and an indication of whether to allow the insertion (for example, OK indicates that the insertion is allowed, and NO indicates that the insertion is not allowed).

The advertisement insertion device may obtain the second verification value according to the advertisement content and the encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device may run the encryption algorithm through hardware. If the first check value includes each check value obtained according to each frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to each frame in the advertisement content and the encryption algorithm. If the first check value includes each check value obtained according to the key frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to the corresponding key frame in the advertisement content and the encryption algorithm.

The update module 202 can be specifically configured to, when the media content includes the first check value, update the first check value in the media content with the second check value, so that The downstream monitoring device verifies the advertising content in the media content according to the second verification value.

The update module 202 may also be specifically configured to send a check value update message, so that the downstream monitoring device updates the first check value with the second check value, and updates the media content according to the second check value. The ad content section in the validation. The check value update message includes the second check value. The manner in which the advertisement insertion device sends a verification value update message to update the first verification value with the second verification value may be applicable to the case where the first verification value is carried in the media content, and may also be applicable to the case where the first verification value is carried in the media content. A check value comes from the situation of the monitoring center.

The verification value update message may also include the identity information of the advertisement insertion device, the advertisement period information, and the like.

The update module 202 may send the verification value update message to the monitoring center, so that the monitoring center sends the second verification value to the downstream monitoring equipment, so that the downstream monitoring equipment uses the second verification value to update the The first checksum. When the check value update message contains the identity information of the advertisement insertion device, the monitoring center can judge whether the check value update message is legal according to the identity information. When the monitoring center determines that the verification value update message is legal, it sends the second verification value to the downstream monitoring device, so that the downstream monitoring device uses the second verification value to update the first verification value.

The updating module 202 may also send the check value update message to the downstream monitoring device, so that the downstream monitoring device updates the first check value with the second check value. When the check value update message contains the identity information of the advertisement insertion device, the downstream monitoring device can judge whether the check value update message is legal according to the identity information. When the downstream monitoring device determines that the check value update message is legal, it updates the first check value with the second check value.

The identity information may be a digital certificate or a security association, and the monitoring center or downstream monitoring equipment may authenticate the advertisement insertion device according to the digital certificate or the security association. When the authentication passes, the check value update message is valid.

The identity information may also be a device address, such as an IP address, a MAC address, etc., and the monitoring center or downstream monitoring equipment may determine whether the advertisement insertion device is a trusted device based on the device address. When the advertisement insertion device is a trusted device, the check value update message is legal.

The monitoring center can also further judge whether the advertisement insertion is legal according to the advertisement period information. For example, when the verification value update message is legal, and the monitoring center determines that the advertisement insertion is allowed according to the advertisement period information and the advertisement decision information provided by the advertisement server, then the advertisement insertion is legal.

When the monitoring center receives the verification value update message, the monitoring center may respond to the advertisement insertion device with a verification value update response message. For example, the monitoring center responds with a verification value update response message, and the verification value update response message may carry OK to indicate that the advertisement insertion is legal, or carry NO to indicate that the advertisement insertion is not legal. The advertisement insertion device receives the check value update response message.

The inserting module 203 may insert advertisement content in the advertisement period through digital program insertion technology.

Optionally, the inserting module 203 may also insert advertisement content in the advertisement period when the advertisement insertion is legal after receiving the update response message.

The sender 204 forwards the media content inserted into the advertising content.

Referring to FIG. 4 , it is a block diagram of an advertisement insertion system provided by an embodiment of the present invention. The system includes an advertisement insertion device 301 and a monitoring center 302 . in:

The advertisement inserting device 301 is configured to obtain advertisement period information in the media content; obtain advertisement content corresponding to the advertisement period; update the first check value with the second check value, and the first check value is based on The check value obtained by the media content and the encryption algorithm, the second check value is the check value obtained according to the advertisement content and the encryption algorithm; insert the advertisement content in the advertisement period; forward the inserted The media content of the ad content.

The advertisement insertion device 301 may be a service gateway, a router, a switch, and the like. For example, service routers near terminals, edge routers, aggregation switches, edge switches, etc.

The advertisement inserting device 301 may obtain the advertisement period information of the media content according to the locally saved advertisement insertion policy.

The advertisement insertion device 301 may also obtain the advertisement period information of the media content from other devices.

The advertisement insertion device 301 may also monitor the media content, and when detecting that there is an advertisement period in the media content, obtain the advertisement period information of the media content. For example, it is monitored whether there is inter-play prompt information in the media content, and when the inter-play prompt information is detected, the advertisement period information is obtained from the inter-play prompt information.

The advertisement insertion device 301 is further configured to obtain the first verification value before obtaining the advertisement period information of the media content. The first check value is a check value obtained according to the media content and the encryption algorithm.

The first check value may include each check value obtained according to each frame and encryption algorithm in the media content; it may also include each check value obtained according to the key frame and encryption algorithm in the media content . The key frame refers to a frame that provides reference for decoding other frames, or a frame that can be decoded independently.

The first check value may be carried in the media content by the headend or other devices.

The first verification value may also be sent by the monitoring center 302 to the advertisement insertion device 301 through other means, such as a signaling channel.

The first check value may be encrypted or signed.

If the advertisement insertion device 301 acquires the first verification value, the advertisement insertion device 301 may verify the received media content to determine whether the media content has been illegally tampered with, deleted or replaced. The advertisement insertion device 301 can obtain a local check value according to the locally received media content and encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device 301 may run the encryption algorithm through hardware. The advertisement insertion device 301 compares the local check value with the first check value. When the local check value is the same as the first check value, the check passes, and the advertisement insertion device 301 forwards the media content. When the local check value is different from the first check value, the check fails. When the verification fails, the advertisement insertion device 301 can send a warning message of verification failure to the monitoring center, and the warning message can include the first verification value; A policy processes the media content, for example, stops forwarding the media content. The monitoring strategy can be issued by the monitoring center, or generated locally.

The system may further include a terminal 303, configured to receive the media content.

The terminal 303 includes a set-top box, an IPTV television set, a mobile terminal with an IPTV function, and the like.

The advertisement insertion device 301 may select a suitable advertisement from locally stored advertisement contents, and obtain the corresponding advertisement contents, or obtain the advertisement contents from other devices, such as an advertisement server.

For example, when it is detected that there is an advertisement period in the media content, the advertisement insertion device 301 sends an insertion request message to an advertisement server, and the advertisement insertion request message carries the advertisement period information. The advertisement server responds to the advertisement insertion device 301 with an insertion response message. When the advertisement server determines to allow advertisement insertion in the advertisement period according to the advertisement period information, the advertisement server sends a splicing request message to the advertisement inserting device 301, and the advertisement inserting device 301 responds to the advertisement server with a splicing response message. The advertisement insertion device 301 obtains the advertisement content corresponding to the advertisement period provided by the advertisement server.

The advertisement server may send the advertisement decision information to the monitoring center 302, the advertisement decision information includes advertisement period information and an indication of whether to allow the insertion (for example, OK indicates that the insertion is allowed, and NO indicates that the insertion is not allowed).

The advertisement insertion device 301 may obtain the second check value according to the advertisement content and the encryption algorithm. The encryption algorithm is the same as the encryption algorithm for obtaining the first check value. The advertisement insertion device 301 may run the encryption algorithm through hardware. If the first check value includes each check value obtained according to each frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to each frame in the advertisement content and the encryption algorithm. If the first check value includes each check value obtained according to the key frame in the media content and the encryption algorithm, then the second check value includes each check value obtained according to the corresponding key frame in the advertisement content and the encryption algorithm.

The system may also include downstream monitoring equipment 304 .

When the media content includes the first check value, the advertisement insertion device 301 may use the second check value to update the first check value carried in the media content, so that the downstream The monitoring device 304 verifies the advertisement content part in the media content according to the second verification value.

The advertisement inserting device 301 may also send a check value update message, so that the downstream monitoring device 304 updates the first check value with the second check value, and updates the media content according to the second check value. The ad content section in the validation. The check value update message includes the second check value. The manner in which the advertisement inserting device 301 sends a verification value update message to update the first verification value with the second verification value may be applicable to the case where the first verification value is carried in the media content, and may also be applicable to The first verification value comes from the situation of the monitoring center 302 .

The verification value update message may also include the identity information of the advertisement insertion device 301, the advertisement period information, and the like.

The advertisement insertion device 301 may send a verification value update request message to the monitoring center 302, so that the monitoring center 302 sends the second verification value to the downstream monitoring device 304, so that the downstream monitoring device 304 uses the second verification value. The check value updates the first check value. When the verification value update message contains the identity information of the advertisement insertion device 301, the monitoring center 302 can judge whether the verification value update message is legal according to the identity information. When the monitoring center 302 determines that the verification value update message is legal, it sends the second verification value to the downstream monitoring device 304, so that the downstream monitoring device 304 updates the first verification value with the second verification value .

The advertisement insertion device 301 may also send the verification value update message to the downstream monitoring device 304, so that the downstream monitoring device 304 can use the second verification value to update the first verification value. When the check value update message includes the identity information of the advertisement insertion device 301, the downstream monitoring device 304 may judge whether the check value update message is legal according to the identity information. When the downstream monitoring device 304 determines that the check value update message is legal, it updates the first check value with the second check value.

The identity information may be a digital certificate or a security association, and the monitoring center 302 or the downstream monitoring device 304 may authenticate the advertisement insertion device according to the digital certificate or the security association. When the authentication passes, the check value update message is valid.

The identity information may also be a device address, such as IP address, MAC address, etc., and the monitoring center 302 or downstream monitoring device 304 may judge whether the advertisement insertion device 301 is a trusted device according to the device address. When the advertisement insertion device 301 is a trusted device, the check value update message is legal.

The monitoring center 302 may further judge whether the advertisement insertion is legal according to the advertisement period information. For example, when the verification value update message is legal, and the monitoring center determines that the advertisement insertion is allowed according to the advertisement period information and the advertisement decision information provided by the advertisement server, then the advertisement insertion is legal.

When the monitoring center 302 receives the verification value update message, the monitoring center 302 may respond to the advertisement insertion device 301 with a verification value update response message. For example, the monitoring center 302 responds with a verification value update response message, and the verification value update response message may carry OK to indicate that the advertisement insertion is legal, or carry NO to indicate that the advertisement insertion is illegal. The advertisement insertion device 301 receives the verification value update response message.

The advertisement inserting device 301 may insert advertisement content in the advertisement period through digital program insertion technology.

Optionally, the advertisement insertion device 301 may also insert the advertisement content in the advertisement period when the advertisement insertion is legal after receiving the update response message from the monitoring center 302 .

The advertisement insertion device 301 forwards the media content inserted into the advertisement content.

The downstream monitoring device 304 may verify the advertisement content part in the media content according to the second verification value. When the verification is passed, the media content inserted into the advertisement content is forwarded to the terminal 303 .

The terminal 303 is also configured to receive the media content inserted into the advertisement content.

The technical solution provided by the embodiment of the present invention can support and monitor legal advertisement insertion, and at the same time, through the verification of the media content, it can monitor whether the content is tampered with, deleted or replaced during the transmission process, ensuring that the content is correctly transmitted to the terminal user.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can be a ROM /RAM, disk or CD, etc.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention.

Claims (10)

1. An advertisement insertion method, characterized in that, comprising: The advertisement inserting device obtains the advertisement period information in the media content; Obtaining the advertisement content corresponding to the advertisement period; Update the first check value with the second check value, the first check value is a check value obtained according to the media content and encryption algorithm, and the second check value is based on the advertisement content and encryption algorithm The check value obtained by the algorithm; inserting the advertisement content in the advertisement slot in the media content; Forwarding the media content inserted into the advertisement content. 2. The method according to claim 1, wherein said updating the first check value with the second check value specifically comprises: Sending a check value update message, so that the downstream monitoring device uses the second check value to update the first check value, and the check value update message includes the second check value. 3. The method according to claim 2, wherein the sending a check value update message, so that the downstream monitoring device updates the first check value with the second check value, specifically comprises: Sending the verification value update message to the monitoring center, the verification value update message also includes the identity information of the advertisement insertion device; When the monitoring center determines that the advertisement insertion is legal according to the identity information of the advertisement insertion device, it sends the second verification value to the downstream monitoring device, so that the downstream monitoring device updates the first verification value with the second verification value. check value. 4. The method according to claim 2, wherein the sending a check value update message, so that the downstream monitoring device updates the first check value with the second check value, specifically comprises: Sending the verification value update message to the downstream monitoring device, the verification value update message also includes the identity information of the advertisement insertion device; When the downstream monitoring device determines that the advertisement insertion is legal according to the identity information of the advertisement insertion device, the first check value is updated with the second check value. 5. The method according to claim 1, wherein said updating the first check value with the second check value specifically comprises: When the media content includes the first check value, update the first check value in the media content with the second check value. 6. An advertisement insertion device, comprising: The obtaining module is used to obtain the advertisement period information of the media content; it is also used to obtain the advertisement content corresponding to the advertisement period; An update module, updating the first check value with a second check value, the first check value is a check value obtained according to the media content and encryption algorithm, and the second check value is based on the advertisement The content and the verification value obtained by the encryption algorithm; an insertion module, configured to insert advertisement content in the advertisement period in the media content; A sender, configured to forward the media content inserted into the advertisement content. 7. The advertisement insertion device according to claim 6, wherein the update module is specifically used for: When the media content includes the first check value, update the first check value in the media content with the second check value. 8. The advertisement insertion device according to claim 6, wherein the update module is specifically used for: Sending a check value update message, so that the downstream monitoring device uses the second check value to update the first check value, and the check value update message includes the second check value. 9. An advertisement insertion system, comprising an advertisement insertion device and a monitoring center, wherein: The advertisement inserting device is used to obtain the advertisement period information in the media content; obtain the advertisement content corresponding to the advertisement period; update the first check value with the second check value, and the first check value is based on the The check value obtained by the media content and the encryption algorithm, the second check value is the check value obtained according to the advertisement content and the encryption algorithm; the advertisement content is inserted into the advertisement period in the media content ; Forwarding the media content inserted into the advertisement content. 10. The system according to claim 9, further comprising a terminal for receiving the media content inserted into the advertisement content.

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