111111
`
`1111111111111111111111111111111111111111111111111111111111111111111111111111
`US 20040223614Al
`
`(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2004/0223614 A1
`Nov. 11, 2004
`Seaman
`(43) Pub. Date:
`
`(54) SECURE VIDEO RECEIVER
`
`Publication Classification
`
`(76)
`
`Inventor: Philip Jeffrey Seaman, Los Gatos, CA
`(US)
`
`(51)
`Int. CI? ..................................................... H04N 7/167
`(52) U.S. Cl. .............................................................. 380/239
`
`Correspondence Address:
`PHILIP JEFFREY SEAMAN
`16130 JACARANDA WAY
`LOS GATOS, CA 95037-3608 (US)
`
`(21)
`
`Appl. No.:
`
`10/434,768
`
`(22)
`
`Filed:
`
`May 8, 2003
`
`(57)
`
`ABSTRACT
`
`A secure means to provide video on demand to a user's TV
`set (1001) while preventing unauthorized viewing or copy(cid:173)
`ing is disclosed. Subsequent embodiments leverage off of
`the core elements to provide wireless phone, videophone,
`internet, email and storage capabilities.
`
`,--------------------------------------,
`I
`I
`150
`160
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`
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`
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`:Line
`:
`L... _________ ..J
`
`140
`,---------,
`
`I
`
`Samsung Ex. 1004
`
`

`

`Secure video receiver) Philip Jeffrey Seo.r~o.n
`
`,---------------~--------------------,
`
`ceiver
`
`Processor De/Encryptor
`
`1
`
`-
`
`-
`
`-
`
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`
`Video
`Decoder
`
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`Protection
`
`1
`
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`:
`Set
`:
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`
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`Fig 1
`
`~--------------------------------------,
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`
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`r---------....,
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`
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`
`Samsung Ex. 1004
`
`

`

`'
`Secure video receiver, Philip Jeffrey Seo.r~o.n
`
`,I,
`11
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`: r---------...,
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`1 EMbodiMent 1
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`
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`L---------.J
`
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`
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`r----------1
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`:
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`
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`
`120
`
`RF
`Tronscelver
`
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`
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`
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`Tronceiver
`
`Fig 3
`
`,-----------------,
`I
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`
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`
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`
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`'"""'
`
`Samsung Ex. 1004
`
`

`

`US 2004/0223614 A1
`
`Nov. 11, 2004
`
`1
`
`SECURE VIDEO RECEIVER
`
`BACKGROUND OF INVENTION
`
`[0001] Video on demand service is available; however, the
`cost is high and improvements are needed. To view video on
`demand, one needs a PC that is up to date as well as a
`high-speed internet connection. With this one can v1ew
`video on demand from various internet websites.
`
`[0002] This current video on demand solution has some
`problems. First the PC is not the optimal screen on which to
`watch a movie. PC screens are generally smaller, if not much
`smaller, than TV screens. Second, PCs are generally not
`located where people watch TV or Videos. TV sets are.
`
`[0003] Third, even if a connection between a video on
`demand receiving PC and a TV set can be made, the
`displayed image is not optimal nor is the sound. If the image
`shows, it does not fill the screen. The sound is poor or
`garbled. Fourth, a PC is a very expensive. A PC is more
`expensive than a TV set and both are needed watch video on
`demand on a TV set. Fifth, a PC can copy video images and
`can run powerful enough software to overcome whatever
`protections the producers and distributors of those video
`images put into the video data stream. Producers of video
`content are concerned about delivering their product through
`a medium such as a PC that can so easily illegally copy and
`subsequently illegally re-distribute their product. Sixth the
`high speed digital line required is expensive.
`
`[0004] So video on demand service is currently fraught
`with issues that need to be overcome.
`
`[0005] The current, most highly used alternative to video
`on demand is rentals either most popularly via local stores
`or second most popularly via the mail. While low cost and
`displaying on a TV screen, these methods are inconvenient
`in the time required to execute the transaction. To wit, in the
`local store case, traveling to the store and back twice once
`to rent and once to return the video takes a number of
`minutes if not a significant fraction of an hour. Rentals by
`mail eliminate the customer need to do this; however, it
`takes at least a day to receive the rental.
`
`[0006] The other means to deliver video, such as broad(cid:173)
`cast, cable or satellite, do not have the bandwidth to allow
`video on demand to a significant fraction of the served
`households. So at best they have resorted to pay-per-view
`allowing users to pay to watch first run videos that begin at
`set times during the day not at a random time at the users
`request.
`
`[0007] Currently wired or wireless telephone service is not
`capable of providing video on demand. Neither is telephone
`service capability available via video rental services.
`
`[0008] Currently high speed, two-way data access is most
`commonly available over either a telephone line via a DSL
`modem or over a coax cable TV line cable modem. Neither
`of these offers secure video to the users TV set without the
`use of a PC. They are also limited in the distance for the
`central office or head end particularly for DSL.
`
`[0009] Video telephony is another technology that has not
`fulfilled it potential. While there are videophones that oper-
`
`ate over telephone lines that use a special display, camera
`and telephone, the picture is not very good. This solution
`does not provide video on demand. The best current solution
`requires PC, a camera and a high-speed line. This solution
`provides a better image. However, like the video on demand
`solution, the requirement of a PC is an expensive require(cid:173)
`ment that limits the usefulness.
`
`SUMMARY OF INVENTION
`
`[0010]
`It is the object of this invention to overcome the
`problems of the existing Video on Demand solutions.
`
`[0011] First by having the device capable of delivering a
`video on demand feed to the input of a TV set the displayed
`image will be on a more optimal screen than that of a PC.
`This will also overcome the second problem of PC based
`video on demand by using the TV set that is where people
`typically watch videos.
`
`[0012] By having suitable encryption on the video on
`demand signal so that it can only easily be de-encrypted by
`the receiving system as well placing copyright protections
`on the signal going to the TV set the image displayed with
`fill the whole TV screen and the sound will also be accept(cid:173)
`able. By have a small dedicated device its cost will be less
`than that of a PC solving the fourth problem that of the high
`cost of a PC.
`
`[0013] Further by having a small-dedicated device with no
`powerful generic processor or the device will keep the video
`secure solving the fifth problem. Producers of the video
`content will be assured that this means of distributing and
`displaying is no more subject to copying that any other
`distribution means.
`
`[0014] By this means video can be more conveniently
`provided than by the most common alternate, video rental.
`There is no drive to the rental store and back to pick up the
`rental, no second trip to return the video, no wait for the
`postman to arrive with the rental from a mail order rental
`service. By using a wireless connection the high-speed link
`can cheaply, quickly and easily be set up. Hence the prob(cid:173)
`lems with video on demand can be overcome and it can be
`enjoyed by many more than currently are able to.
`
`[0015] An additional embodiment is presented which also
`provides wireless phone capability in addition to video on
`demand of the first embodiment.
`
`[0016] An alternate embodiment is presented that lever(cid:173)
`ages off the high-speed data connection afforded by the first
`two embodiments. Significant capabilities are added, includ(cid:173)
`ing one or more wireless modems and video transceivers
`including video telephony capability, as well as high-speed
`internet access point with a router, firewall, 1!0 ports, and a
`wireless network connectivity.
`
`BRIEF DESCRIPTION OF DRAWINGS
`
`[0017] FIG. 1 Primary Embodiment Schematic
`
`[0018] FIG. 2 Additional Embodiment Schematic
`
`[0019] FIG. 3 Alternate Embodiment Schematic
`
`Samsung Ex. 1004
`
`

`

`US 2004/0223614 Al
`
`Nov. 11, 2004
`
`2
`
`REFERENCE NUMERALS IN THE DRAWINGS
`
`[0020]
`
`Promary embodiment
`10
`Radio
`60
`70n Wireless Modem n
`SOn
`Video Transceiver n
`110 Antenna
`111n Antenna n
`130
`Baseband processor
`142 MAC/Hardware interface
`144 Mux
`
`146 De/Encryptor
`148
`Firewall
`150 Video decoder
`152
`Processor
`154
`Telephone interface
`180
`Input device
`l/0 n
`230n
`1002 Camera
`1004 Server
`1006 Server w
`1008 Printer
`
`Additional embodiment
`11
`70a Wireless Modem a
`SO a
`Video Transceiver a
`105
`Switch
`111a Antenna a
`120
`RF Transceiver
`140 MAC de/encryptor
`143
`Location
`145
`Electronic Identification
`Number
`router
`147
`149 Hardware interface
`151
`Video codec
`153 Mass storage
`160
`Copyright protection
`l/0 a
`230a
`1001 TV Set
`1003 Telephone Line
`1005 Telephone
`1007 PCw
`1100 Other devices
`
`DETAILED DESCRIPTION
`
`[0021]
`
`I. Introduction
`
`[0022] Now referring to FIG. 1, there is a radio (60)
`comprising an antenna (110), RF transceiver (120), base(cid:173)
`band processor (130), and Mac de/encryptor (140). The
`radio (60) changes a wireless encrypted video data stream
`into an unencrypted video data stream in the receive path
`while doing the reverse in the transmit direction.
`
`[0023] A video decoder (150) decodes the unencrypted
`data stream into a standard video format that a TV set (1001)
`or monitor can display. Next copyright protection is added
`to the signal by the copyright protection (160) circuit. Now
`the copyright protected video is ready to be sent to the TV
`set (1001) or other display.
`
`[0024] The device knows its location (143) and can pro(cid:173)
`vide it if requested. There is an electronic identification
`number (145) with which the device can be identified. There
`is a user input device (180) that allows the user to control the
`video content and otherwise provide inputs to the system.
`There is no data connection out of the device for the
`un-encrypted or un-copyright protected video. Thus a video
`on demand data stream can be received and displayed to a
`users TV set (1001) while preventing unauthorized copying
`or displaying.
`
`[0025] Now referring to FIG. 2 the additional embodi(cid:173)
`ment schematic is shown. A telephone interface (153) and
`mux (144) have been added. By connecting to the user's
`telephone line (1003) the additional embodiment (11) can
`act as a base station for a wireless telephone (1005). The
`mux (144) appropriately directs data streams to and from the
`radio (60), the video decoder (150), and telephone interface
`(152).
`
`[0026] Now referring to FIG. 3, the alternate embodiment
`schematic is shown. The alternate embodiment provides
`expanded capabilities and the services including improved
`wireless capability as well as improved video with encryp-
`
`tion capability, mass storage, two-way video, and high(cid:173)
`speed data access point/router.
`
`[0027] The improved wireless capability is comprised of
`one or more wireless modem (70a, 70n). A wireless modem
`(70a, 70n) is comprised of one more antenna (111a,111n), a
`switch (105), RF
`transceiver (120), baseband proces(cid:173)
`sor(130), and Mac/hardware interface (142), location (143),
`de/encryptor (146), and electronic identification number
`(145).
`[0028] There is a switch (105) to connect the antennas
`(111a, 111n) to the RF transceiver (120). Having more than
`one antenna (111) improves the modem's (70) performance
`and hence increases the distance and data rate.
`
`[0029] The improved video capability is comprised of one
`or more video transceiver (80a, SOn). There is a processor
`(152) that controls the elements of the video transceiver (80)
`including a hardware interface (149), video codec (151),
`de/encryptor (146), copyright protection (160), mass storage
`(153), electronic identification number (145), and input
`device (180).
`[0030]
`In addition to the de/encryptor (146) in the wireless
`modem (70), there is also a de/encryptor (146) in the video
`transceiver (80). This allows encrypted video or data to be
`stored on the mass storage unit (153) and allows dual
`encryption. This improved video capability includes an
`electronic identification number (145) that allows unique
`identification of the video transceiver (80).
`[0031] A video coder has been added to provide two-way
`video capability. The coder is combined with the decoder
`(150) of the primary embodiment to form a video coder(cid:173)
`decoder or video codec (151). The video codec (151) can
`convert the signal from a camera into a coded video data
`stream.
`[0032] This data stream can travel via the router (147) to
`the modem (70) which encrypts the data stream again to
`prevent unauthorized access and sends it out wirelessly.
`[0033] Like the primary embodiment, there is an input
`device (180) that allows the user to input commands or
`responses. This can be used to dial another videophone user,
`play a video game, surf the internet or do other tasks. There
`is still no unencrypted video or standard video format
`connection in or out. Video received is as secure as in the
`primary embodiment. Video transmitted out is similarly
`secure.
`[0034] The one or more wireless modems (70) and video
`transceivers (80) are connected to a router (147) that routes
`or switches the data between the modems (70), video
`transceivers (80) as well as to and from one or more 1!0 data
`ports (230a, 230n). There is a firewall (148) connected to the
`router (147) to prevent unauthorized access to the system.
`[0035] The alternate embodiment improves the high-speed
`wireless capability and telephone capability of the prior
`embodiments. It also takes advantage of this high-speed link
`to provide high-speed internet access point functionality in
`addition to video on demand, videophone and video gaming
`capability.
`[0036]
`II. Operation
`[0037] To set up the primary embodiment (10), place the
`device on or near the TV (1001) or other display. Connect
`the device to the TV (1001) or other display.
`
`Samsung Ex. 1004
`
`

`

`US 2004/0223614 Al
`
`Nov. 11, 2004
`
`3
`
`[0038] To use, the device needs to log onto a network or
`other data source via the radio (60). The electronic identi(cid:173)
`fication number (145) and location (143) can help with this.
`If not previously or otherwise entered the location will need
`to be entered. Once logged on, the input device (180) is used
`to interact and select videos or other data to be displayed.
`[0039] Set up of the additional embodiment (11) is similar
`to the primary embodiment (11) with the addition of con(cid:173)
`necting the telephone line (1003). As in the primary embodi(cid:173)
`ment (10), the device needs to be connected wirelessly to a
`network or other source in order to interact and select videos
`or other data to be displayed.
`[0040] Set up of the alternate embodiment is like the prior
`two embodiments, with the difference being that more TV
`sets (1001) or cameras (1002) as well as wireless modems
`(70) can be connected. If not directly connected one or more
`wireless modems (70) or video transceivers (80) may be
`connected to the router (147) via a cable. The input device
`(180) can be used to dial a call for video telephony.
`[0041] Use is like the prior two embodiments (10, 11) for
`each individual wireless modem (70), video transceiver (80)
`or 1!0 port (230). The user logs on and then begins to watch
`videos or otherwise use the services made available by the
`device.
`[0042] Another use of this device is web surfing or video
`game playing. With the user input device (180), such as a
`keyboard and mouse or a game joystick, the user can surf the
`web, send and receive emails or play video games either
`against the computer or against other users.
`[0043]
`III. Conclusion
`[0044] The primary embodiment disclosed provides more
`convenient video on demand service to a user's most com(cid:173)
`mon means of viewing video, their TV set (1001).
`[0045]
`It is more convenient than video or DVD rentals
`either from local stores or shipment based sources since
`there is no trip to pick up the rental nor one to to return it.
`Neither is there a wait for the rental to arrive by mail. It is
`more convenient that PC based video on demand since it
`does not require an expensive PC and it displays on the users
`TV (1001). It is more convenient than pay per view since the
`user can choose when to watch rather than having to watch
`on a predetermined schedule. The video content is never
`readily available to be copied. Hence video content and
`other content providers can be at least as assured with this
`as with other distribution means.
`
`[0046] A variety of encryption methods may be employed
`and be within the scope of this invention. For example any
`of the variants of data encryption standard may be used or
`triple data encryption standard as well as numerous key sizes
`for example 64, 128, 256 etc. Advanced encryption standard,
`public key infrastructure, and high bandwidth content pro(cid:173)
`tection and all of their variants could be employed. Many
`other encryption means can be employed and be within the
`scope of this invention.
`
`[0047] Coding and de-coding of video is described.
`MPEG is a coding scheme that has the advantage of reduc(cid:173)
`ing the size of the required data stream, thus reducing the
`required minimum size of the data link. There are variants of
`MPEG that can be used that are within the scope of this
`invention such as MPEG-2, MPEG-3, MPEG-4 etc. Also
`
`there are other types of encoding that can be used and still
`be within the scope of this invention. A non-exhaustive list
`includes NTSC, PAL, SECAM, HDTV, SDTV, RGB,
`YcbCr, YpbPr, S-Video, CVBS, SDI, HDMI, and DVI.
`Further the two functions of encoding and compression may
`be separated. That is the information may be encoded by one
`means and compressed by another and still be within the
`scope of this invention.
`
`[0048] The input device (180) could communicate by a
`variety of means including via RF, infrared or wire. The
`electronic identification number (145) could be hard wired,
`that is unchangeable. Alternatively it could be erasable or it
`could be a combination of the two, partially unchangeable
`partially changeable.
`
`[0049] The electronic identification number could be 32
`bits long to match up with the IPV4 address size. Alterna(cid:173)
`tively, it could be 128 bits long and match up with the IPV6
`address length. A benefit to a longer electronic identification
`number is that it increases the number of unique electronic
`identification numbers and thus minimize the likelihood of
`two devices having the same electronic identification num(cid:173)
`ber.
`
`[0050] The location stored could be a street address for
`example 123 any street, apartment 4567, Anytown, Anys(cid:173)
`tate, any postal code, Any country. It could be longitude and
`latitude coordinates. This information could be entered by
`the user. Alternatively, it could be determined by the network
`or the device itself by triangulating to the network and other
`end users whose location is known. Alternatively, it could
`also be determined by an on board global positioning
`system, also known as GPS or Glonass, Russia's similar
`system, or similar system. A key element is that the location
`be based in physical reality. This is as opposed to an address
`used in many protocols such as Ethernet which does not
`have a location associated with it. On the other hand the
`location (143) and electronic identification number (145)
`could be merged into one so that the electronic identification
`number (143) would be the location (145).
`
`[0051] There are numerous benefits of having the device
`know its location (143). On initial startup it can help
`determine which base station is optimal to communicate
`with. Location (143) can help to uniquely identify the device
`for billing and antipiracy. As new devices and new base
`stations are put into place, having the devices know their
`location (143) would be helpful. If the device moves, for
`example across town, it would be helpful to know the
`accurate location (143). Similarly if the device was used for
`an emergency it would be helpful to be able to provide the
`location to emergency personal. Having the device know it's
`location can help in planning for the locations of new base
`stations.
`
`[0052]
`In addition to securely receiving video, the device
`could securely receive music.
`
`[0053] A wide variety of wireless frequencies and proto(cid:173)
`cols may be employed. A non-exhaustive list includes all
`bands and protocols in the institute of electrical and elec(cid:173)
`tronics engineers 802 series of standards including 802.11
`including 802.11a, 802.11b, 802.11g, 802.11h and 802.11i;
`802.16, uNII, ISM, MDS, MMDS, HiperLAN, HiperLAN1,
`HiperLAN2, Euro-MMDS, High Speed Wireless Access in
`Japan, CDMA, wCDMA, GPRS, EDGE, PCS, WCS, GSM,
`
`Samsung Ex. 1004
`
`

`

`US 2004/0223614 Al
`
`Nov. 11, 2004
`
`4
`
`UMTS and all of their variants. Other licensed and unli(cid:173)
`censed frequency spectrum may be used and be within the
`scope of this invention.
`
`[0054] Operation may cover just one frequency and pro(cid:173)
`tocol or may cover multiple countries' radio rules. For
`example the device may operate from 4.9 GHz to 5.85 GHz
`allowing operation in US using 802.11a or uNII; Japan using
`High Speed Wireless Access; or European using 802.11i or
`Hiperlan1 or Hiperlan2. Thus one design can be manufac(cid:173)
`tured and be used in multiple countries, minimizing produc(cid:173)
`tion, distribution, and support costs.
`
`[0055] The radio is able to receive a video signal in real
`time. That is to be able to receive it as fast as it needs to be
`displayed. As better compression is used the radio data rate
`does not need to be as fast to do this. So as better compres(cid:173)
`sion techniques become available slower radios may be
`used.
`
`[0056] The data rate may be spotty, that is not continuous,
`and still allow the device to display video on demand. For
`example if the radio can receive data at faster than the
`required rate a buffer of video data can be built up. If the
`radio loses the signal for a while, video can be viewed from
`the buffer with no disruption to the service. By monitoring
`the amount of buffer left the device can more or less urgently
`request more of the video to be sent.
`
`[0057] To maximize the range and data rate all or part of
`the front end of the RF transceiver can be mounted outdoors
`and as far above ground a practical. This can include the
`LNA, PA & filter.
`
`[0058] Because of this device a wide range of users will be
`able to more easily access video on demand. Further, this
`increased ease of access allows an expansion of the content
`variety. While ultimately the market will determine, the
`depth and breadth of the content will be wider and deeper
`than what is currently available. So in addition to movie
`rentals, television shows and other content may also be made
`available via this means.
`
`[0059] For example a user could request to see last night's
`show that they missed. Like the video on demand example
`this device enables a more convenient solution than the
`alternatives. Currently one must have a TV recorder and
`direct it to record a show. While the disclosed additional
`embodiment has this capability, with the disclosed device
`the user can decide to watch a show after it has been
`broadcast. There is no need to remember to record the show
`prior to it being broadcast. This would be a benefit to the
`broadcasters as well since the user can be charged to view
`the show. Thus this can be another source of revenue for
`broadcasters, TV show producers and other producers and
`distributors of content. Hence this device can bring a new
`evolution in broadcast television. Because of the bandwidth
`available video content does not need to be sent to everyone
`at once. Rather it can be sent out as individually to as little
`as one user at a time when users request it. Further content
`may be developed specifically for this device, taking advan(cid:173)
`tage of its features such as interactive shows where users
`interact with the content provider and with each other.
`
`[0060] The telephone interface (152) of the additional
`embodiment (11) connects with one or more country's
`public switched telephone network, also known as PSTM.
`The device could be Internet protocol, also known as IP,
`
`Phone capable. That is phones (1004) without wireless IP
`call capability can use the device in either the primary (10),
`alternate (11) or additional embodiments to make a phone
`call. It would allow phone calls to be provided initially via
`the plain old telephone service line (1003). As network
`infrastructure becomes capable of handling phone calls these
`can be handled by the radio (60) rather than the phone line
`(1003). The radio (60) is capable of communicating over
`longer distances that the telephone (1003).
`
`[0061] The alternate embodiment takes the wireless and
`video capabilities of the primary and additional embodi(cid:173)
`ments and improves upon them. It also takes advantage of
`the high-speed wireless connection required for video on
`demand to provide a high speed wired access point and
`router (147) capability.
`
`[0062] The alternate embodiment disclosed provides two(cid:173)
`way video capability allowing video-telephony by the addi(cid:173)
`tion of an encoder (151), an encryptor (146), and a wireless
`modem (70) capable of sending as well as receiving video.
`
`[0063] The device is an improvement on non-PC based
`videophones since the quality of the picture is better. It is an
`improvement on PC based solutions. Since its hardware is
`focused on video and transception only. There is no expen(cid:173)
`sive, powerful, generic processing and storage capability.
`Consequently the disclosed device is lower cost while more
`secure and while still providing an excellent picture.
`
`[0064] The alternate embodiment allows for services
`besides video on demand delivery including video gaming
`or internet surfing. With the high speed wireless link both of
`these services can be provided. With an input device such as
`a game joystick or keyboard and mouse, the user can provide
`inputs that can be sent back via the wireless link. Hence a
`user can play a video game, surf the internet, and write email
`using this device as the means to link to these services.
`
`[0065] This capability may also be available with the
`primary (10) and additional (11) embodiments. It depends
`on the required back channel speed of the interactive content
`or application. Since the additional embodiment has the
`capability to transmit video most, if not all, interactive
`games or other application will be able to run on the
`additional (11) embodiment. While the primary embodiment
`(11) with its lower back channel requirement may not be
`able to handle as wide a range of interactive content and
`applications.
`
`[0066] Another benefit of the video on demand capability
`is that a user could contact an operator to help in the event
`it is needed. This capability could also be used to verify the
`user's identity. For example the user could require visual
`identification before certain content is provided so that their
`child does not access inappropriate content.
`
`[0067] As shown in FIG. 3 a wide variety of potential
`devices (1100) to communicate with including PC's (1007),
`printers (1008), servers (1004, 1006), the primary embodi(cid:173)
`ment (10), the additional embodiment (11), telephones
`(1005), and telephone lines (1003) to name a few. The router
`(147) could route data around the in home telephone wiring
`(1003) via and 1!0 (230) and the customer's telephone line
`(1003)
`
`[0068] The disclosed device compares favorably to other
`high-speed connections such as DSL or Cable Modems.
`
`Samsung Ex. 1004
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`

`

`US 2004/0223614 Al
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`Nov. 11, 2004
`
`5
`
`These do not provide video on demand or videophone
`capability without an expensive PC. With an antenna with
`gain and the front end mounted outdoors, the radio can
`provide a link approaching five miles or more. DSL and to
`a lesser degree cable modems performance suffers when the
`user gets too far from the central office or head end. Also
`there are areas of the country where neither DSL nor cable
`modem data access is available. Setting up a wireless
`connection is quick and inexpensive relative to running a
`wire be it telephone or cable. Consequently this wireless
`device can more easily cover these areas.
`
`[0069] The improved video capability includes mass stor(cid:173)
`age (153) and encryption (146) that allows videos to be
`stored and stored. This provides the capability that VCRs
`and mass storage based recorders do not have, namely the
`ability to store encrypted video as well as the ability to
`provide video on demand and videophone service. The
`de/encryptor (146) does not need to be the same in each
`wireless modem (70) or video transceiver (80). For example
`the modem (70) could use advanced encryption standard and
`the video transceiver (80) could use data encryption stan(cid:173)
`dard. The mass storage device (153) can also be used as a
`telephone answering machine on which to store an outgoing
`message to callers as well as incoming messages from them.
`
`[0070] Having an de/encryptor (146) in both the wireless
`modem(70) and video transceiver (80) enables dual encryp(cid:173)
`tion. This is when the video or data is encrypted twice. This
`makes unauthorized access to the video or data even more
`difficult. An unauthorized user will need to hack two encryp(cid:173)
`tions not just one.
`
`[0071] Having more than one wireless modem (70) allows
`faster wireless data rates by simultaneous operation. If two
`radios(70a, 70b) operate in a different frequency bands each
`can operate without jamming one another. For example the
`first radio (70a) operates between 2.3 GHz to 2.6 GHz while
`the second radio (70b) operates between 4.9 GHz and 5.85
`GHz. Thus, one radio (70a) can be communicating at the
`same time the other (70b) without mutual interference.
`Hence the overall wireless data rate capacity is increased.
`This would also increase the number of wireless devices can
`be communicated with. Since with only one radio (70), say
`in the 5 GHz band, devices equipped with another type, say
`a 2.4 GHz radio, could not be communicated with and visa
`versa.
`
`[0072] Another way to achieve a similar effect is by the
`use of directional antennas (111a, 111n). For example, one
`(111a) could be directed to the sender of the d