TW586284B - Buried data stream in a wireless home network - Google Patents

Abstract

A method and apparatus is presented for burying a hidden data stream into a combined network data stream. In the preferred embodiment, the network data stream is an MPEG-2 type video data stream, and the hidden data stream is embedded so that it is neither readily detectable nor easily removable from the network data stream. A home gateway having a wireless transceiver communicates with appliances in the home via this network data stream. The hidden data stream can be embedded with a main data stream either by the content provider or by the gateway in the home. At the appliance, the hidden stream can be removed and is presented to or used by the user in a way appropriate for the appliance. Instructions as to how the hidden stream is to be presented on the appliance can be embedded into the hidden stream itself. The hidden data stream can be further used to control access to and control the content of the rest of the network data stream. Revenue generated by allowing access to the hidden data stream can be utilized to subsidize the cost of the wireless network components.

Description

586284 A7 ___B7 V. Description of the invention (1) Interaction of related patents This patent application is US Patent No. 09 / 746,817 filed on December 22, 2000, which is only listed here for reference. The invention is generally related to the use of an embedded communication channel in a digital communication stream. More specifically, the present invention relates to an embedded data channel and can be controlled and hidden in a wireless home network. BACKGROUND OF THE INVENTION For many years, advertising has been seen as one of the major financial pillars of the development of new media formats. Before the advent of cable TV and watching pay-per-view events, commercial land allowed television services to be provided to consumers without paying. The power to provide business information to the public also supports extremely free wireless services and significantly reduces consumer costs for newspapers and magazines. With the advent of the Internet and the World Wide Web, many attempts have been established to provide business information to Internet users efficiently. Banner ads on web sites became part of the Internet everywhere within three years of the invention of the drawing web browser. At the outset, banner ads were considered an effective way to send business messages to Internet users. For example, the initial user base of Amazon.com was attracted by banner ads that appeared on every commercial web site. However, when the Internet is getting old and the “click to click on banner ads”, advertisers will remind consumers of banner advertising capabilities. The banner advertising rate will decrease and advertisers will start looking for other ways To reach consumers on the Internet. Banner advertising changes quickly, including "pop-ups," -4 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284

Advertising; when a web page is accessed, "pop-up" advertisements will appear in their own window. Many users who are accustomed to banner advertising consider pop-up ads to be too intrusive. As a result, pop-up advertising is not a popular method of Internet advertising. Therefore, advertisers can search for another way to reach Internet users through the limited capabilities of the World Wide Web interface. Pop-up and banner ads are usually ordered from web content providers or their agents. When a user requests a homepage from a web site, the site can select an advertisement and provide it to the user. The fee is usually paid to the site on a per-view or click-through basis. Therefore, placing advertisements on web sites is worthwhile for expanding to the point that users are attracted to web sites. Most valuable websites for advertisers are "entry" sites that use a wide range of useful content to attract users. Some portal web sites are directly related to Internet access providers to allow them to access The default homepage designation for the users of the provider. Unfortunately, the ads placed on the content provider via a web site have not been successfully advertised in the more traditional media of radio and television. This is due to several simultaneous factors Possibly. First of all, when opposing pop-up web site advertisements at the same time, there is a customer response that ignores banner ads. Since ads placed on web sites must be transmitted via HTML, Java, or related programming languages, advertisers are now leaving search for an innovation Methods to reach consumers using these languages. Second, with the placement of advertisements on a web site, there is no guarantee that the advertisements will be successfully delivered to the user. The medium between the content provider of the web site and the end user is a data stream Control. Internet access providers can use pipelines. This paper is compliant with Chinese National Standards (CNS). A4 specification (210X 297 mm) 586284 A7 _B7___ 5. Description of the invention (3) Control to change or replace advertisements. In addition, Internet users can use complex programs to isolate unwanted advertisements. Third, use a single advertisement Publicity campaigns have very little ability to reach the public. When the Internet entrance location extends to more audiences than other locations, complex • ♦ Miscellaneous use will change the homepage to meet their needs. Therefore, even the largest entrance location has faced obvious Reduced advertising revenue. Finally, since the web site advertising example assumes that the user uses the Internet to access an actual web site, these ads cannot be combined with other types of Internet use. For example, downloading music files or streaming Users ca n’t even use a web site as an interface to this file. Or, future televisions can directly access video programs over the Internet without first accessing a traditional web page. Therefore, users of this technology do not Would be a potential audience for a web site ad. So as more digital content becomes available on the internet As time goes on, web site ads will become less relevant. Another way to provide ads to Internet users is to coordinate the ads through the hardware used to interact with the Internet. For example, several companies have offered free Or reduce the price of computer hardware used to provide advertisements to users in exchange. Users agree to provide demographic information about themselves to allow hardware vendors to sell advertisements to advertisers at a higher advertising rate. Unfortunately In general, since the advertising flow of the hardware is neither particularly secure nor integrated with the viewed web site, the creation of the program can be "evicted", hardware and exempt the user from screen advertising. What is needed is a new way to link commercial advertising messages to Internet content. This method should not be determined by the existence of a web page, and it is allowed to quotient-6-this paper size applies Chinese National Standard (CNS) A4 specifications (210X 297 mm) 586284 A7 _______B7 I. Description of the invention (4) " ~ ^-The industry message is directly linked to the content at the source or at the user's location. At Lipbon, the same method that allows commercial messages to be linked to content can also be used to provide an additional communication channel to homes. For the purpose of, for example, providing commercial information, this channel can be selectively used to increase the bandwidth, provide content about the main message, control the encryption of the main message, or be used to transport control signals. SUMMARY OF THE INVENTION The present invention meets these needs by providing a hidden data stream embedded in a network data stream. This hidden data stream can be embedded in a wireless local area network 'where the data stream can be transmitted from a data source to an end user appliance in a home. In a specific embodiment of the present invention, the commercial data stream is highly embedded on the digital data source. This commercial data stream cannot be measured until the digital data is decomposed ’in order to be accessed by end users. In this regard, commercial data streams can be removed from digital data and can be provided to users in a manner suitable for digital data. The video material is transmitted from its source in an MPEG format or a future variant of this format. In MPEG, the encoded data can be a hidden or hidden commercial data stream. This hidden data stream cannot be detected by any entity controlling the data stream, including Internet access providers or home broadband login points. When the data stream enters the home, it can be distributed via a wireless LAN. A wireless transceiver port on a home appliance can receive the signal. This port can be decoded into an HDTV signal such as an HDTV with MPEG transmission suitable for the appliance. This port can also decode hidden commercial channels. The information on this business channel will allow business news to be shared with users in the way that advertisers want and select. -7. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm)

Binding

Line V. Description of the invention (5 uses. For example, one is similar to commercial electricity, one on the mountain sees the interruption of the normal mpeg signal. Or only the pop-up ads can appear on the screen, or a screen area is reserved for Guang Er ::, Hidden commercial channels will not significantly change the transmitted data, so Ebay is still…, and has provided the entire MPEG signal, and “there is no obvious signal attenuation.” In the second embodiment, 'Internet broadband communication The gateway benefits of the path are provided in the home environment. The gateway can further act as a wireless LAN transceiver, or base station. The gateway has access to the source of the commercial information. The gateway then embeds the commercial information in the home A hidden business data path in the wireless communication of the appliance. The receiver on one of the 15 devices in the test can receive this wireless communication and decode the communication into a general data path, which includes the Data received on the Internet; and a commercial data path that includes commercial messages. These commercial messages are then provided to the user via the appliance in a manner suitable for the appliance. In a second specific embodiment of the invention, the commercial information on the commercial data path of the first and second specific embodiments is sold to advertisers. Revenue from advertising sales can be used to reduce the cost of wireless network components. In a fourth embodiment of the invention, the hidden data stream can be selectively used to transport an additional communication channel to the home. The channel itself can be used to indicate the signal learned by the appliance, whether to activate or deactivate the channel. In the channel, it can be Content related to finding content on the main channel. This additional content can supplement the main content. Alternatively, the hidden data stream contains instructions to decode the main channel. In addition, the hidden data stream contains controls between the appliance and the source Signal. This control signal can change the content of the main data channel, and this paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 586284 A7 B7 V. Description of the invention (6 and can even be used to transport authorization to change Account that accesses or changes the primary data stream. Hidden data channels are also used for additional signal frequencies of the primary data channel , Or used to ship content that is completely unrelated to the main channel ’s data. In other words, a hidden data stream can be used to activate or control various features of the device. Revenue can be increased by selectively authorizing the use of hidden data channels. This revenue It can be used to reduce the cost of wireless network components. Brief Description of the Drawings Figure 1 depicts a prior art home network diagram using a prior art gateway and a media server. Figure 2 is a gateway using the present invention Figure 3 depicts the network and related data flow diagrams used to obtain video source material on a TV broadcast Internet, where a commercial message is embedded via a content provider. Figure 4 depicts A network and related data stream for obtaining video source material on a television broadcast Internet. One of the commercial messages is embedded via the gateway of the present invention. Figure 5 depicts the playback of the Internet on an Internet appliance A network and related data flow diagram of the HTML web page data is obtained, and a commercial message is embedded through the gateway of the present invention. Figure 6 is a flowchart of the method of the present invention using advertising revenue to finance the use of private gateways and adapters for the present invention. Figure 7 is a diagram depicting a network and related data streams showing possible sources. The location of the stream and the different modes of operation of the appliance. And the combination uses a central license. Figure 8 is a circuit diagram of the system describing the present invention. -9-586284 A7 B7 V. Description of the invention (8) Wide operation, so up to 50 G2 two-way wireless channels can be operated simultaneously. The G2 agreement includes Doppler distortion compensation up to 80 Hz. This allows the G2 agreement to be used with handheld devices that move within the wireless coverage area during use. The G2 protocol also allows the use of low power levels implemented by battery operation. The data hiding technology used in the present invention is basically a method for combining two channels or data streams together into a single data stream. Many technologies currently exist to achieve this result, including basic frequency and time-division multiplexing techniques. However, since they can be easily detected, basic multiplexing techniques are not preferred. As long as it is detected, it is fairly easy to filter out one of these streams if they are not wanted. As a result, the present invention is a technique for hiding one data stream in another data stream in a way that is not easily detected.

Sarnoff Corporation has developed this technology. Sarnoff's data-hidden technology works in part by utilizing redundant coding syntax elements of MPEG and similar MPEG bitstreams. A MPEG-like bit stream is a definition of a bit stream accepted by basic industrial groups through the compression, encoding, and digital transmission of audio and visual data. In the MPEG-2 bit stream definition, one of these encoding syntax element values is invalid. Sarnoff technology must include encoding invalid values of grammatical elements and using hidden data to replace non-deprecated grammatical elements. Since this technique does not cause significant disruption or change in general usability of the main content of the MPEG bitstream, it is particularly useful for the present invention. Sarnoff technology allows a 90 Mbps hidden data stream to be established in a 2 Gbps MPEG-2 stream. This information hidden technology also uses confidential patent technology. Although the present invention uses G2 wireless technology and Sarnoff data concealment in the following -11- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 ___ B7 V. Description of the invention (9) Technical description, But other techniques can be used without exceeding the scope of the invention. For example, any wireless technology with sufficient bandwidth to transmit highly defined video signals can be used instead of G2 technology. In addition, other techniques for hiding or combining data streams can be used to merge a commercial data stream with a requested content data stream. Of course, this does not mean that the combination of G2 wireless technology and Sarnoff data hiding technology described below will not create an unintended symbiosis effect. Prior art home network Although the basic technology and functions of a home network are important to the understanding of the present invention, the detailed description of the present invention starts from the previous art description. Fig. 1 shows an example of accessing the Internet 10 through a home 20 using, for example, an Internet gateway 30 which has been considered in the prior art. This prior art gateway 30 is the main link between the home 10 and the appliances of the Internet 10. The gateway 30 has, for example, an ADSL interface, a WAN interface 32 for multiple Ethernet ports 34, and other access ports such as a Home Telephone Network Alliance (HPNA) interface 36. The HPNA interface 36 is a computer 40 that follows the HPNA structure to allow the network to access the Internet via an existing home telephone line. Similar proposed technologies include a home appliance network that communicates via an existing home power line. The Ethernet port 34 can be used to connect a variety of standard computing devices, such as a computer 42 and an Internet appliance 44, to the Internet 10. Shared Internet Access The use of a gateway 30 for multiple devices 40, 42, 44 has been established in prior art. It is also possible to connect a wireless LAN transceiver or base station 46 to one of the Ethernet ports 34 of the gateway 30. This wireless transceiver 46 allows an 11 Mbps wireless network to be established according to the IEEE standard 802.1 lb. This network is transparent -12-586284 V. Description of the Invention (w) Access by any device such as computer 48 with a receiver or transceiver according to the 802.1 lb standard. Others have proposed incorporating a 802.lb transceiver into the television 50. This allows Internet access from the TV 50, and even allows the TV 50 to play compressed video signals stored on or received from a computer 40 or 42 from the Internet 10. Similar techniques can be used to connect home stereo equipment to the wireless base station 46. It is also possible to connect the court automatic control device 54 to the gateway 30. The Delta 54 also includes a home security device that can access a security service via the Internet 10 or standard telephone services (not shown in Figure 1). The device 54 also includes a controller that can be used to control the environment of the house 20. This controller can control lights, heating, and even doors and windows. Access can be provided to the home automation device 54 and to an external service provider, and used via the Internet 10. The concept of a media server 60 is also established in prior art. Media servos such as the feeder 60 are usually responsible for the storage and orientation of audio and video materials for a home network. As shown in FIG. 1, a media server 60 can access the Internet through an Ethernet port 34 of the gateway 30. The media server 60 usually includes a port 61 for connecting to a large hard disk 62, and the hard disk 62 can store digitally encoded audio / video materials. Alternatively, the hard disk 62 may be incorporated in the media server 60, or other storage media may be used instead of the hard disk 62. The media server 60 also has input ports 64, 66, such as an input 64 of a conventional cable TV 68, or an input 66 of a conventional television or wireless tuner 70. Satellite TV, DVD players and recorders, VCRs, handheld cameras, and similar input ports for digital cameras have also established a separate media server concept. -13-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 586284

The gateway 30, the media server 60, and other components shown in the courtyard 20 of FIG. 1 are generally considered to form a home network 22. A better gateway diagram / capability including media feeder capabilities shows a gateway 100 in the present invention. This gateway 1 is a combination gateway 30, a media server 60, a hard disk 62, and The functions of the wireless transceiver 46 of the prior art. Although these abilities are considered to be in the block including the interrogator 100 ', it is obvious to those skilled in the art that one or two forces have committed to move to external components without changing the creative concept. The function of the gateway 100 can provide access to the Internet 10 and external television and wireless sources 12 to various appliances 180-188 in the home 20. In this description, the coverage area of the wireless local area network is referred to as home 20, even though the present invention can be applied to all areas where the provider wants to send commercial messages to download individual digital data. In Figure 2 'Apparatus 180-188 series shows a stereo stereo 180, a television I ", a computer 184, an Internet appliance 186, and home automation equipment 188. These appliances iso-lag are only representative, and these The different numbers, functions, and variations of the appliance 180188 are within the scope of the present invention. In addition, although the appliances 180-188 are shown and described as devices that are physically separated from each other, this does not necessarily constitute a limitation on the conditions of the present invention. In fact The appliances 180-188 shown in Figure 2 and shown later can be used separately in a single device. The gateway 100 has a WAN interface section 11 to connect to the Internet 10. This WAN interface is ideal for management Two-way interface with xDSL line and two-way digital electrical gauge. Ideally, the WAN interface part 11 can manage single -14-This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ~-586284 A7

xDSL or digital cable connects multiple levels of simultaneous service. The preferred interface part 110 is a chip reconstruction system (Rsoc), which can provide a mix of reconstruction and fixed functions to handle the transmission protocol of audio, audio, conference video, or video multimedia services on a DSL line. . For example, the WAN interface section 110 allows a single xDSL line to be used to handle both video streaming and Web site access at the same time. To interface with analog and digital television and radio sources 12, the gateway also includes a tuner section 120. The tuner section 120 includes tuner functions for receiving television signals from digital cables, digital broadcasts, satellite television, and even analog television and radio broadcast signals. In addition to receiving these signals, a preferred embodiment of the signal tuner section 120 includes a tuner to select and receive a single channel 12 from these sources 12. To allow viewing of multiple channels from source 12, the tuner section 120 needs to include a multiple spectrum tuner. Ideally, the gateway 100 includes a television tuner in the tuner section 120 of each television 182 of the home 20. Although the preferred tuner section 120 includes decoding channels from all of the sources 12 described above, it is within the scope of the present invention to exclude some capabilities. For example, some want to develop a tuner section 120 that does not have radio signal capabilities, or cannot receive analog signals at all. Moreover, it is within the scope of the invention including different sources of audio / video signals. Such reductions or additions will not specifically alter the invention. The preferred embodiment of the gateway 100 also includes a firewall portion 130. The firewall part 130 protects the home environment from unwanted electronic intrusion through the WAN interface part 11. When xDSL and cable modem technology is used for -15- This paper standard applies to China National Standard (CNS) A4 specification (210X 297 public) (Centi) 586284 A7 ________ Β7 V. Description of the Invention (13) It is particularly important when accessing the Internet. The part of wisdom 140 and data storage 150 includes logic and storage to allow operation of the gateway 100 of the present invention. One of these functions handled through these sections 140, 150 is the ability of the gateway 100 to include the utility programs provided by the media server 60 and hard disk 62 described in FIG. 1 above. For example, it is necessary for the gateway 100 to receive a user signal to select a desired video program source and channel. The interpretation of this signal and the transmission of the requested program are handled in section 140. In addition, it is usually necessary to decode (or demodulate) a signal stored in the data storage section 15 or received via the tuner section 120. As long as the number k is decoded, the section 140 must then encode (or modulate) the signal in the format expected by the wireless receiver in appliances 180-188. For example, a preferred embodiment is to transmit all signals at the transceiver 170 in a [V1PEG-2] image bit stream. Therefore, the analog television signal received from the tuner section 120 must be decoded from the analog signal and then encoded into an MPEG-2 bit stream. In this way, all analog TV signals can be converted into a digital MPEG_2 bit stream through the gateway 100. In addition, the 'smart part 140 supports multiple protocols at the MAC layer, including video, DVD, IP, Ethernet, and Bluetooth protocols. This allows a wide variety of appliances 180-188 and other computing devices used with the gateway 100. The smart section 140 also includes a variety of different technologies to improve the efficiency or usability of the modulator in the modulator section 120. For example, analog TV signals are often affected by various human factors. A COMB ferrule is included in the smart part 140, so that the television signal is transmitted to one or more devices.-This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 586284 A7 ____ B7____ V. Description of the invention (14) Before 180-188, these human factors are transitioned. Finally, this section 140 also contains the logic needed to encode the commercial channel in the home 20. The relevant business channels and logic are described in more detail in Figures 3 to 5 below. The encryption / decryption section 160 can ensure the privacy of the wireless network of the home 20. This section 160 can automatically encrypt the data of appliances 180-188 and decrypt the data received from appliances 180-188. This contributes to the privacy and security of Wirt's adjacent network, where the range of wireless transceiver 170 and appliances 180-188 can extend beyond the range of home 20. The wireless transmitter 170 is responsible for transmitting data to the appliances 180-188 and receiving data from the appliances 180-188. Although the preferred embodiment uses the higher bandwidth G2 system described above, the IEEE 802.1 lb standard of the wireless transceiver 170 may be used. The use of higher bandwidth allows individual channels to be allocated to each of the special 180-188 in the court. For example, the preferred G2 system has the ability to handle 50 separate channels, and each channel can carry up to 40 Mbps at a total of 2 Gbps. Since 20 Mbps is a necessary capability for carrying HDTV signals, this channel capability allows each channel to carry two full HDTV signals. Using 50 channels allows appliances 180-188 to use a carrier sensing technology similar to that used by radiotelephones at a clear channel and transceiver 170 protocol. This protocol capability allows multiple transceivers 170 to operate simultaneously in every other range (e.g., in adjacent homes). Each of the appliances 180-188 includes or utilizes a device that can transmit to and receive signals from the transceiver 170. The device must also be able to receive instructions from the user and encode this instruction through the smart part 140 of the gateway 100. Most 17- This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) 586284 A7 B7 V. After the description of the invention (15), this device must be able to convert the signal received from the gateway 100 into Information processed by appliances 180-188. For example, an MPEG-2 video stream containing a television image must be decoded by the device and transmitted to the television 182 as the analog or digital audio / video signal expected by the television 182. First, the device is in the form of an adapter that is physically separated from the appliance 180-188. The adapter may be incorporated into an antenna required for communication with the gateway 100, and further includes an input device such as a remote control, a keyboard, or a mouse. Finally, the appliances 180-188 may be incorporated in the adapters of the appliances 180-188 themselves. Business Channel Figure 3 shows a representative network architecture 200 utilizing the present invention. In this figure, the gateway 100 is used by the television 182 to obtain a video signal 210 on the Internet 10. The video signal 210 in this case is received via an MPEG-2 encoded video stream 210. A content supplier 220 is a supplier of the video source material 222 of the video signal 210. By using the present invention, the content provider 220 can combine the commercial message 224 with the video source material 222, and can ensure that the commercial message 224 and the source material 222 are always reserved for all users. In the present description, the term business message 224 can be considered as a message that a provider will pay for the purpose of disseminating the message to others who are looking for it. Thus, the term business message 224 will cover product and service advertising, religious and political messages, public service type messages, and other messages of this type. This is accomplished by using an encoder 226 that combines a commercial data stream 212 with a main data stream 214 in a single data stream 210 using a data-hidden technique. In the preferred embodiment, this is through the use of • 18- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 public love ·) 586284 Α · 7 Β7 V. Description of the invention (16) Development of the above Sarnoff company Technology is complete. The resulting data stream 210 is an MPEG_2 encoded video signal. The commercial data stream 212 is embedded in the data stream 210 where the redundant coding syntax element values can normally be found in the MPEG bit stream. By using Sarnoff technology, the main data stream portion 214 of the MPEG stream 210 is not affected. Therefore, the entire video source material 222 provided by the content provider 220 is included.

One of these main advantages of Sarnoff data hiding technology is that the commercial data stream 212 embedded in the MPEG-2 stream 210 does not change the overall usability of the data stream 210. Therefore, the same data stream 210 can be received by an MPEG-2 capable device, and the video source 222 found in the main data detection stream 214 can be played without being affected by the hidden commercial data stream 212. The MPEG-2 appliance receiving the signal 210 is unaware of the occurrence of the commercial data stream 212.

Another advantage of Sarnoff data hiding technology is that the commercial data stream 212 is not easy to detect and remove. As a result, the commercial data stream 212 can be linked to the main data stream 214 to ensure that no medium will detect and remove the commercial data stream 212. In addition, as long as the video itself is not decoded into pixels, the manner in which the commercial data stream 212 is hidden in the MPEG-2 data stream 210 ensures that the commercial stream 212 will be able to undergo subsequent multiplexing. In addition, the way in which the two data streams 2 1 2 and 2 1 4 coexist can make it very easy to synchronize with the two data streams 212, 214. As a result, the content provider 220 can design the commercial message 224 and can ensure that the message 224 can be provided to the user at an appropriate time during the review of the video source 222. In the display situation of FIG. 3, the MPEG video signal 210 is on the Internet-19. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 B7 V. Description of the invention (17) 10 To the gateway 100 of the present invention. In a preferred embodiment, the gateway 100 knows the presence of the commercial data stream 212 on the MPEG signal 210, but does not alter the MPEG stream 210 in any way. Instead, the gateway 100 can transmit the signal 210 to the television 182 without changing its content 212, 2140. As previously mentioned, the television 182 is received from the gateway 182 via, for example, the adapter 230 shown in FIG. Signal 210. The adapter 230 is specially configured to receive signals from the gateway 100 and provide the received signals to the television 182. As a result, the adapter 230 must have a receiver 232 in order to receive the signal 210 from the gateway 100. In a preferred embodiment, the receiver 232 and the gateway 100 use the Sarnoff G2 wireless protocol to receive and transmit wireless LAN signals. Although not shown in Fig. 3, it is necessary for the adapter 230 to decrypt the signal 210 received from the gateway 100. As mentioned above, the gateway 100 encrypts all messages of the appliances 180-188 before the message is transmitted. Therefore, each adapter 230 must include the ability to decrypt the message. This decryption capability is included in the receiver section 232 of the adapter 230. Since the receiver 232 can also act as a transmitter and transmit the signal related to the television 182 to the gateway 100, the receiver 232 also has the ability to encrypt the signal. Of course, it is within the scope of the present invention to omit the encryption capability of the adapter 230. In addition to the receiver 232, the adapter 230 also includes a decoder 234 to decode the commercial data stream 212 and the main data stream 214 found in the signal 210 into a video source 222 and a commercial message 224. These two elements 222 and 224 are then provided to the television 182 via the display logic 236. The display logic 236 series includes converters to provide materials 222, 224 to the TV 182. Acceptable -20- This paper size applies Chinese National Standard (CNS) A4 specifications (210X 297 mm) 586284 A7 __ B7 V. Description of the invention ( is). In addition, the display logic 236 may also determine how the business information 224 is provided to the television 182 during the viewing of the video source material 222. In the television article, a possible option is a commercial interruption, in which the video source material 222 can be queued and interrupted by a commercial message 224, very similar to commercial broadcast television. Other options include an illustration display of commercial messages 224, a dedicated commercial area of the television image (such as the bottom bar of the screen), a translucent image that allows some video source material 222 to see through the image, or even, for example, use on a web site Pop-up window. In the preferred embodiment, each of these options may coexist, and the commercial message 224 itself contains instructions on how the message 224 is provided to the appliances 180-188. The adapter 230 must also include the ability to accept user control input and send this user control command to the gateway 100, which can be accomplished through user control 238. Many practical methods that can be used allow the user to control the commands input to the adapter 230, including infrared and radio frequency remote controls, keyboards, mice, screen commands, and touch screen pads. The adapter 230 includes one or more of these actual methods in the user control 238 itself, or the adapter 230 only accepts commands to enter the television 182 (or whatever the appliance uo-188 is connected to the adapter 230). The preferred embodiment of the adapter 230 also includes a cache memory 240, which can be used to cache video source material 222, business information 224, or even user control 238 signals. The cache memory 240 can be used for a variety of purposes, such as storing business information 224, so a complete message can be accumulated before being passed to the television 182. In this way, a cache memory of 24 can constitute a commercial data stream. -21-This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 B7 V. The bandwidth of the invention description (19) 212 limit. Although display logic 236 waits for a timing signal to indicate whether message 224 should be provided, cache memory 240 also considers retaining business message 224. Similarly, when the commercial message 224 is provided to the television 182, the cache memory 240 can be used for the video source material 222. Finally, the adapter 230 may optionally include status information 242. The status information 242 allows the adapter 230 to operate in various modes. As detailed below, the gateway 100 can transmit a signal to the adapter 230, so it no longer decodes the hidden business information 224. When operating in " closed " or " dumb " mode, the adapter 230 can pass the display logic and only pass through the combined data stream 210, without the need to retrieve business information 224. The gateway 100 can also be an adapter 230 is placed in the "start" or "normal" mode, where the adapter 230 can restart capturing business information 224. The current status of the adapter 230 is stored in the status information 242. The status information 242 can also be stored in the adapter Other status information required during operation 230. Another embodiment of the present invention is the network construction 250 shown in Figure 4. In this figure, the content provider 220 can provide the video source material 222 without any commercial Instead, the video source material 222 is transmitted over the Internet 10 using a standard MPEG-2 video stream 252 having only one primary data stream 254. This MPEG-2 video stream 252 is then received by the gateway 100 And decoded into the video source material 222. The gateway 100 then combines the video source material 222 with a commercial message 256 and provides it to the gateway 100 through a provider 258. The provider 258 may be the content provider 220 itself, or An organization merged with the content provider 220. Or, the provider 258 cannot use any party-22- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 B7 V. Description of the invention (20 ) And the content provider 220. The provider 258 may provide a commercial message 256 combined with the video source material 222 to the gateway 100 regardless of whether it is merged. The commercial message 256 may be via the Internet 10, or via, for example, A simple telephone connection or wireless transmission of some other communication medium is transmitted to the gateway 100. The commercial message 256 may also be permanently stored in the storage device 150 of the gateway 100, or provided to the gateway through some removable media. 100. Finally, the provider 258 uses only one of these methods to indicate how the gateway 100 obtains the message 256, instead of using one of the methods described above to provide the entire content of the commercial message 256 to the gateway 100. This is done by providing the Internet address of message 256 to the gateway 100. The gateway 100 then displays the encoder 226 used by the content provider 220 in a manner similar to FIG. The router 260 combines the video source material 222 with the commercial message 256. The result of this encoding process is an MPEG-2 data stream 270, which can be transmitted to the adapter 230 through the wireless LAN protocol of the gateway 100. This transmission data Stream 270 currently contains the video source material 222 of the main data stream 272 (which is the same as the main data stream 254 of the MPEG stream 252), and the business message 256 of the commercial data stream 274. The adapter 230 then uses the same technique of FIG. 3 described above Provide video source 222 and commercial information 256 to TV 182 ° Although the main design of MPEG-2 video stream 210, 252, 262 is to encode audio / video data, any type of data is encoded into this video stream 210, 252, 262 . The gateway 100 of the present invention can use this in the MPEG-2 stream by encoding all wireless communication between itself and the appliance 180-188. -23-This paper standard is applicable to the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) 586284 A7 B7 V. Description of the invention (21) Even if the appliance 180-188 does not expect video data. Since all wireless data transmitted from the gateway 100 is transmitted as MPEG-2 streams, it is always possible to use Sarnoff data hiding technology to establish a hidden commercial data stream 212, 274 in communication with the appliance 180-188. This capability is utilized by the network construction 300 shown in FIG. In this figure, an Internet appliance 186 is used to browse a web site 310 on the Internet 10. The currently viewed HTML webpage 312 is provided to the gateway 100 on the Internet 10 and is completely received on the gateway 100. The provider 258 who wants to provide a commercial message 256 to the Internet appliance 186 ensures that the gateway 100 can access this message 256. The gateway then uses its encoder 260 to combine the HTML web page 312 and the business message 256 into a new MPEG-2 data stream 320. Thus, the non-video HTML route containing the web page 32 can be transmitted to the Internet appliance 186 as the main data stream 322 of the MPEG-2 stream 320, and the business message 256 is transmitted as the business data stream 324. The Internet appliance 186 receives a data stream 320 from the gateway 100 via an adapter 330. The adapter 330 receives the data stream 320 via the receiver 332. The received data stream 320 is then decoded in a decoder 334 into the original HTML web page material 312 and business message 256 prepared by the provider 258. Until now, the adapter 330 is much like the adapter 230 for the television 182. The two adapters 230, 330 have a receiver 232, 332 and a decoder 234, 334 to convert the main data streams 272, 322 and the commercial data streams 274, 324 back to their original components. In addition, the two adapters 230, 330 have a user control element 238, 338, a cache memory 240, 340, and a state memory 242, 342. However, the adapter for Internet appliances 330 -24- This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 B7 V. The display logic 336 of the description of the invention (22) is quite different Display logic 236 of adapter 230. The adapter 230 required to provide electronic data to the television 182 thus includes the required converter for the television 182 to display the information provided by the adapter 230. In contrast, the display logic 336 of the adapter 330 must provide data to the Internet appliance 186. Therefore, the display logic 3 3 6 can provide the data in HTML format, perhaps Java and any other format accepted by the Internet appliance 186. In addition, the display logic 336 must determine how the business message 256 is transmitted to the Internet appliance 186. For example, the message 256 is provided via a similar banner ad that is permanently attached to the screen portion of the Internet appliance 186. The message 256 can be provided as a pop-up advertisement window, a voice message, or even a video stream advertisement executed on the same or separate window as the HTML webpage 3 12. Other possibilities exist for providing the web page 312 to the commercial message 256, and the invention is not limited to any particular method. It is possible to have display logic 336 to perform all known ways of combining message 256 with web material 312 in accordance with instructions contained in business message 256. The provider 258 of the development message 256 can then make a final decision on the method to use for the special message 256. For the web site 3 10, an HTML web page material 3 12 in which an MPEG data stream has been embedded and a commercial data stream similar to that shown in FIG. 3 is provided. However, unlike the situation in Figure 3 where the video source 222 data is normally expected to be transmitted as an MPEG data stream over the Internet, basic HTML data is normally not expected to be in the MPEG format. Therefore, if the web site 310 embeds an HTML web page 312 into an MPEG stream, the web site 310 must determine that the end user is utilizing the present invention and that it can decode the HTML material and the commercial channel. If the end user does not use the present invention, the embedded HTML data 3 12 will not be in the MPEG data stream -25-This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 B7 V. Description of the Invention (24) Before the revenue is generated in step 402, it is necessary to reduce the cost of the gateway 100 and the related adapters 230 and 330, only to increase the basis of the gateway 100 in use. As long as the user has a gateway 100 and the necessary adapters 230, 330, the business information 224, 256 can then be hidden in the desired data stream in step 408. The details of this step 408 are described above. The hidden business messages 224, 256 can then be provided to the end users based on the capabilities of the appliances 180-188 used by the end users and according to the instructions of the business messages 224, 256 itself (step 410). The method then ends at step 412. Selective Use of Hidden Data Streams In addition to the commercial data described above, the ability to embed a hidden data stream into a home's wireless LAN can work in many ways. Figure 7 shows a home 500 including a wireless gateway 510 of the present invention. The gateway 510 includes an encoder 512, which can combine a main data stream or channel 514 and a hidden data stream or channel 516 into a single combined data stream 518. As described above, the hidden data stream 516 is hidden in the combined data stream 518. Therefore, it is not easy to detect whether the hidden data stream 516 appears in the combined data stream 518, and the combined data stream 518 can be processed with the equivalent function of the main data stream 514. The combined data stream 518 is then transmitted to a transmitter 520, which may transmit the combined signal 518 to appliances 530-534 in the home 500. These signal sources can be area 540 or far end 550. Local source 540 includes devices that can play widely distributed distributed media, such as DVDs 542, music CDs 544, and audio or video tapes 546. Alternatively, a computer such as a media server 548 can be used as a local source 540. The remote source 550 can pass through Example-27- This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7-_____B7 V. Description of the invention (25 ~) ~~~~ Such as an antenna 562, Or some type of WAN 564 or cable 566 interface remote source interface 560 to receive in the home 500. The remote source 550 must often enter the home 500 through a medium 570, such as an Internet service provider, a cable operator, a local telephone service provider, or even a local power or other utility. Each of these sources 540, 550 may provide a main signal 514 and a hidden signal 516 to the gateway, where these signals are combined to form a signal 518 via an encoder 512 in the gateway 51. Combining the two signals with an area encoder 512 is described in Fig. 4 above. Alternatively, the regional or remote sources 540, 550 may be provided to the gateway 510 directly using a component signal 518. For example, a DVD player encodes a composition signal 518 on a DVD using a main channel 514 containing conventional DVD content and a hidden channel 516 containing traditional content enhancements. Alternatively, the remote source 550 may transmit a combined signal 518 to the home 500 in order to avoid the media 570 from monitoring or filtering the data found on the hidden channel 516. An example of a remote source 550 that transmits a combined signal 518 is described above in FIG. The combined data stream 518 is considered to be an equivalent function of the main data stream 514. Therefore, a receiving device would be completely unaware of the hidden data stream 516 and still be able to use the primary data stream 514. An example of such a receiving device is the dummy 530 shown in FIG. This appliance 530 can receive the combined data stream 518, but it is not known whether the hidden data 516 appears. Therefore, the dummy 530 will only be able to detect the primary data stream 514 and will only be able to use that data. Both appliances 532 and 534 are considered "smart" appliances in that they contain circuitry and / or stylization to allow them to separate the combined data stream 518 received -28-This paper standard applies Chinese National Standard (CNS) A4 specifications ( 210 X 297 mm) 586284 A7 ------ _B7 V. Description of the invention (26) It is composed of 514 and hidden 516 data. However, in the present invention, it is possible to have appliance operation in a "closed" mode, such as a closed appliance 532 shown in FIG. In this mode, the closing appliance 532 will operate as a dumb appliance, and only the main data in the data stream 514 will be retrieved. In contrast, the appliance 534 operating in the "start" mode can retrieve the main data stream 5M and the hidden data stream 516 from the signal 518 transmitted by the gateway 510. Appliances 532-534 that can decode hidden, hidden signals 516 can be controlled by signals transmitted through the gateway 510. Therefore, the gateway 51 can send a signal to the start-up appliance 534 to operate in the shutdown mode, and cause the close-up appliance 532 to operate in the startup mode. As such, the gateway can selectively control one of these appliances 532-534 to access data in the hidden data stream 516. One way to control appliances 532_534 in this remote manner is to use some hidden data channels 516 as a control signal path to allow control of signals transmitted back and forth between remote appliances 532-534 in home 500. Because even the shutdown appliance 532 needs to be able to receive and respond to control signals, the shutdown appliance 532 can use its circuitry to decode and monitor the embedded hidden data stream 516, even in shutdown mode. However, when in the off mode, the decoded hidden data stream 516 cannot be used for any purpose other than to supervise the data stream 516 used to control the signal transmitted to the special appliance 532. In order to selectively transmit the control signal to a particular appliance 532-534, the control signal must contain a unique address to identify the appliance 532-534. Since the transmission extension achieved through the gateway 510 may be geographically restricted, it is only needed for each appliance 532-534 uniquely addressed in the area of the transmitter 520. However, it has the more advantage that each appliance has a standard of 29 in the weight ball. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7 —— B7 V. Description of the invention (27) Addressing 'such as the provision of an Ethernet mac address. Provided by a universal unique identifier, it is ensured that two devices on the same network cannot share the same address. A universally unique identifier also allows for a more centralized control of appliances 532,534. For example, a remote source 550 can selectively control which of the appliances 532-534 can access and utilize the hidden channel 510 in its combined data stream 518. Alternatively, the gateway 510 may selectively maintain when and how the controllers 532-534 work with the hidden channel 516. Since the gateway 510 is centrally controlled via the WAN interface 564, a central authority can control when devices 532-534 access the hidden channel 516, much like a cable TV provider can be done via a cable converter box in the home Remote control access. This ability can work in many ways. FIG. 8 shows an environment 600, in which a central authority 610 can control the status of appliances 620 in different homes 630. Although it is not shown in FIG. 8, these appliances 620 include or are connected to an adapter ' such as the adapter 230 shown in FIG. A remote source 640 can provide a combined signal 65o that is accessed from each home 630 and is transmitted to the appliance 620 via a gateway 622 at the home 63. The combined signal 650 includes a main channel 652 and a hidden channel 654. The remote source 640 can communicate with the central authority 610 'to help decide which appliance 620 in the home 630 allows access to the hidden channel 654. The hidden channel 654 can be used for 600 different purposes in this environment. For example, the hidden channel 654 may provide content to supplement the content of the main channel Magic 2. As shown in an example, the music provided on a major channel 652 enables _____- 30. This paper size is applicable to China National Standard (CNS) A4 (21〇x 297 mm) 586284 A7 __; ___ B7 V. Description of the Invention (29) Among them, the main channel 652 is only used after the user pays for access. This is easy to do 'because the appliance 620 contains a user control element 238, 338 as described above' and can be interacted by the user. Therefore, each appliance 62 can receive instructions via the hidden channel 654 to provide the user with an option For paid access to main channel 652. The user can interact with the appliance 620, and the appliance 620 can send the user's response to the gateway 622. The gateway 622 may then authorize the central authority 610 or the remote source 64 to charge the user's credit card, and then cause the appliance 620 to allow the user to decrypt the primary channel 652. Alternatively, the hidden channel 654 may provide a continuous communication path from the appliance 620 to the remote source 640 via the gateway 622. When providing free unencrypted access to the main channel 652, Baitong's payment authorization allows users to access the content of the hidden channel 654. The general method of the above example is that the hidden channel 654 can be used to turn on and off the features of the appliance 620. For example, the appliance 620 may have background information provided on the currently playing music video or provide access to encrypted content via the main channel 652. These features may be pre-programmed in the appliance 620 or programmed using instructions hidden in the hidden channel 654. For any method, these features can be enabled or disabled by controlling the ability to access the hidden channel 654. Since these appliances 530, 532 cannot access the hidden channel 654, dumb appliances 530, or smart appliances operating in the off mode 532, do not have the ability to use or control this feature. "The above environment 600 can also be used to allow central authorization 610 supervision , Measure, and control the bandwidth access found in hidden channel 654. The preset condition of the appliance 620 may be the closed condition, in which the processing of the combined data signal 650 is -32- This paper size uses the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 A7

Looks like it contains only the main data channel 652. The bandwidth of the hidden data channel 654 exists in this system 'but is activated only by the central authority 61 (), or by other smart devices embedded in the gateway 622 or the appliance 620. The bandwidth is then provided to third parties and homeowners, and can be exchanged free of charge with other centrally authorized 61 or others who can initiate access to the hidden channel 654. Bandwidth can be used for many different purposes, including the provision of the aforementioned appliance characteristics. The fees collected to enable this bandwidth or capability for appliance features can then be used to finance the costs of wireless network components, such as appliance 62 and gateway 622. Figure 9 depicts a method 66 used by these revenues in this manner. Step 662 of this method 660 can be used to restrict access to the hidden data stream 654 through a variety of different appliances 62. In other words, unless this access is explicitly authorized ', the appliance 620 operating in a closed mode can avoid access to the hidden data stream 654. In step 664, receipt of the fee allows some appliances 62 to access the hidden data 654. As a result, the paid appliance 620 allows access to the hidden data stream 654 at step 666. The revenue generated by this method 660 can then be used to fund the components required for setting up a local wireless LAN in the home 630 in step 668. Specifically, revenue can be used to reduce the price of wireless signals received by the gateway 622 and the appliance 620 and / or the adapter used by the appliance 620. The method then ends at step 670. The method 660 of FIG. 9 generates revenue by changing the access to the hidden data stream 654 on the special appliance 620, thereby establishing additional bandwidth of the appliance 620 or activating previously available appliance 620 features. As shown in method 680 of FIG. 10, a hidden data stream 654 and a main data stream 652 are combined into one through control. 33- This paper size applies to the Chinese National Standard (CNS) A4 specification (210X 297 mm) 586284 A7 B7 V. Invention Description (31) It is also possible to generate income by combining the capabilities of data stream 650. The method 680 is based on the assumption that some appliances 620 exist, and the hidden data stream 654 is retrieved from the combined data stream 650 shown in step 682. Revenue is collected through the ability to control the combination of hidden 654 and primary 652 data streams (step 684). After income is received or promised, the data streams 652, 654 may be combined into a combined data stream 650 (step 686), and then transmitted to the appliance 620 via the gateway 622 (step 688). The generated revenue may be used to fund network elements in step 690, and method 680 may then end in step 692. Regardless of whether revenue is generated by controlling appliances 620 that have access to the hidden data stream 654, or by controlling the ability of a hidden data stream 654 in the combined data stream 650, revenue is used in methods 660 and 680 to reduce consumption Cost of wireless network components. In fact, the ability to monitor, measure, and control the bandwidth of the hidden data stream 654 allows revenue to be generated, followed by the cost of components 620, 622. This can improve the adaptability of the wireless network standard including the hidden data stream 654, and the ability to earn revenue can be further increased by adjusting the data stream 654. The present invention is not limited to all the details described above, and modifications and variations of the present invention can be achieved without departing from the spirit or scope of the present invention. For example, the above can be considered as access to the Internet. Specifically, the present invention can be equally applied to materials obtained on any network, regardless of whether it is private or public. In addition, although the present invention preferably uses G2 wireless technology and Sarnoff data hiding technology provided by Sarnoff Corporation, other technologies can be used without departing from the scope of the invention. Moreover, although the adapters 230 and 330 are only discussed with a TV 182 and an Internet appliance 186, -34- This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 586284 V. Invention Explanation (Apart from many known or unknown appliances not shown in the figure, an expected part of the present invention can be developed as shown in Fig. 2 for other appliances. Finally, although the wireless network described above is in "House", ", family", or, "family" but the present invention is also applicable to offices, warehouses, factories, airports, hotels, squares, city parks, or businesses that provide digitally downloaded data online The message is sent to any other location of the end user. Because many of these options can be provided, the scope of the present invention is not limited to the above, but is limited only by the following patent application scope. (CNS) A4 size (210 X 297 mm)

Claims (1)

586284 Patent Application No. 091112369g Chinese Application for Patent Scope Replacement (February 1993) g 6. Scope of Patent Application 1. A method for financially subsidizing network components, which includes: a) Combining commercial information in A combined data stream, the combined data stream also contains a desired digital signal, the commercial information is hidden in the combined #stream so that the combined data stream is an equivalent function of the desired digital signal; b) in a wireless The combined data stream is transmitted on a local area network transmitter; c) the commercial information from the combined data stream is decoded on an adapter that can provide the desired digital signal to the appliance; d) obtained to distribute the Revenue from commercial messages; and e) using the revenue to finance the price of at least one of the group of transmitters, adapters, and appliances. 2. · A system for controlling access to a hidden data stream embedded in a combined data stream transmitted on a wireless local area network, the system comprising: a) a receiving device having: i) a receiver 'for Receiving the transmitted combined data stream; ii) a decoder for decoding the combined data stream into a main data stream and a hidden data stream; in)-a state element that indicates whether the operation of the decoder will come from the Decode from the hidden data stream of the combined data stream, b) a gateway having a transmitter for transmitting the combined data stream and for sending instructions to the receiving device to change the state element, and This controls whether the decoder operates to decode the hidden data stream. 3. The system according to item 2 of the scope of patent application, wherein the gateway includes a A8 B8 C8 D8 586284 Contribute 2j e 6. Patent Application Network interface. Via this network interface, the gateway can receive the direction and change the state of the receiving device. 4. If the system of the scope of patent application No. 3, wherein the receiving device has a unique address, and the directions received through the gateway are regarded as the unique address of the receiving device 'if the receiving device only Respond to a command containing its address. 5. The system of claim 4 in which the unique address of the receiving device is unique throughout the world. 6 · —A system for controlling access to a hidden data stream hidden in the combined data stream, including: a) — an encoder for combining the hidden data stream with a main data stream into combined data Stream, the combined data stream operates with the equivalent function of the main data stream; and b) a plurality of regional locations, each regional location having ... i) a gateway for transmitting a wireless local area network signal, The wireless signal includes the combined data stream and a control signal, and ii) at least one device having an adapter for receiving the wireless signal, the adapter having: (1)-connected to A ϋ for Receiving a wireless signal containing the combined data stream; ⑺-decoder 'which can disassemble the combined data stream into the hidden data stream and the main data stream; and (3)-a state memory to determine the 奘Is it possible to set the ruler in a first state, where the received wireless signal is decoded into the hidden -2- This paper size applies the Chinese National Standard (CNS) Α4 specification (210 X 297 male 586284 A8 B8 C8 Data stream and the main data stream; or in a second state, where the received wireless signal is provided to the device without decoding, and the state of the state memory is controlled by the control signal. 7. The system of claim 6, wherein the control signal is found in the hidden data stream. 8. The system of claim 6 in which each adapter has a unique address, and wherein the control signal can identify the adapter, wherein the control signal can pass through the unique address of the adapter. 9. The system of claim 6 in which the main data stream is encrypted, and a decryption key required to decrypt the main data stream is in the hidden data stream. 10. The system according to item 9 of the patent application scope, wherein the hidden data stream further includes instructions for explaining how the decryption key is used to decrypt the main data stream. 11. If the system of claim 9 is applied, the hidden data stream further includes instructions for providing an option for paying access to the main channel to the end user, so that the main data stream will not be blocked. Decrypt until the user chooses to pay for access. 12. The system of claim 6, wherein the hidden data stream contains content 'to supplement the content found on the main data stream. 13. The system of item 6 of the patent application, wherein the hidden data stream contains control message information to control what is found on the main data stream. 586284 A8 B8 C8 D8 Patent Application Scope 14. If the system of patent application item 6 is applied, the hidden data stream can control a feature access of the appliance. 15. If the system under the scope of patent application No. 6 further includes: C) a central authority that can communicate with each of the gateways, the central authority may request the gateways to send a signal Send to one or more adapters' to change their state memory between states. 16. The system of claim 15 in which each adapter has a unique address, wherein the control signal can identify the adapter, wherein the control signal can pass through the unique address of the adapter, and The central authority enables the gateways to change the state of at least one of the adapters identified by its unique address. 17. If the system of claim 16 is applied, it further includes a remote source to communicate with the gateways, and the remote source can provide the combined data stream to the gateways. 18. The system of claim n in the scope of patent application, wherein the central authority does not authorize the gateways to access hidden channels, unless the remote source owes payment to the central authority for this access. 19. A method for financing the cost of wireless LAN components, including: a) transmitting a combined data stream over a wireless LAN, the combined data stream having a main data stream and a hidden data stream, the hidden The data stream is hidden in the combined data stream, so that the hidden data stream cannot be easily detected in the combined data stream, and the combined data stream is an equivalent of the main data stream The standard is applicable to China National Standard (CNS) A4 specification (2l0x 297 public love) 586284 A8 B8 C8 l — _ Yan ....... D8 VI. Application for patent scope functions; b) The Combined data stream; C) selectively decode the combined data stream on the appliance, so that when the combined data stream is decoded, the hidden data stream is accessible, and the main data stream is passed to the appliance, and when the combined data stream When the stream is not decoded, the combined data stream is sent directly to the appliance, and the hidden data stream is inaccessible; d) receiving revenue to allow access to the hidden data stream on the appliance; and e) Use the revenue to finance the component costs used to transmit and receive the combined data stream. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)