IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
`
`US007599691B1
`
`112~United States Patent
`Mitchell
`
`110)PatentNo.:
`145)Date of Patent:
`
`US 7,599,691 B1
`Oct. 6, 2009
`
`154) SYSTEM AND METHOD FOR INTERNET
`ACCESS ON A MOBILE PLATFORM
`
`175) Inventor: James P. Mitchell, Cedar Rapids, IA
`1US)
`
`173) Assignee: Rockwell Collins, Inc., Cedar Rapids,
`IA 1US)
`
`1 * ) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 1541b) by 561 days.
`
`121) Appl. Noz 09/494,19S
`
`122) Filed:
`
`Jan. 2S, 2000
`
`156)
`
`151)
`
`Int. Cl.
`H04H' 4/00
`12009.01)
`H04H 20/74
`12008.01)
`455/431; 455/3.02; 455/414.1
`152) U.S. Cl.....................
`158) Field of ClassiTication Search ................. 455/560,
`455/3.02, 3.06, 418, 422, 431, 463, 12.1,
`455/566, 414.1, 7, 39, 500, 507, 508, 509,
`455/515, 517; 725/73 — 77
`See application file for complete search history.
`References Cited
`U.S. PATENT DOCUMENTS
`A 5/1993
`Rabowsky et al.
`5,214,505
`Sklar et al.
`A 6/1993
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`Harvard et al.
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`5,844,636 A
`Arsenault et al.
`3/1999
`5,886,995 A
`8/1999
`Joseph et al.
`5,940,148 A
`Mitchell
`11/1999
`5,990,826 A
`Sklar et al.
`11/1999
`5,990,928 A
`Beksa et al.
`1/2002
`6,335,694 Bl *
`Hiett .............
`11/2002
`6,477,152 Bl *
`Mitchell
`5/2004
`6,741,841 Bl *
`7,280,825 B2 *
`10/2007
`Keen et al. .....
`FOREIGN PATENT DOCUMENTS
`0 890 907 Al * 1/1999
`
`EP
`
`.... 340/945
`.... 370/316
`. 455/188.1
`.... 455/431
`
`OTHER PUBLICATIONS
`Co-pending patent application entitled "Dual Band Receiver For A
`On-Board Entertainment System" filed on an even date, inventor J.
`Mitchell and R. Walzer.
`Co-pending patent application entitled "Communication System
`And Method For A Mobile Platform" filed on an even date, inventor
`J. Mitchell.
`
`1Continued)
`Pri mary Examiner Sonny Trinh
`174)Attorney, Agent, or Firm Daniel M. Barbieri
`
`157)
`
`ABSTRACT
`
`A communication system is provided for use with a mobile
`platform. The communication system can be configured to
`store video data on-board to allow pseudo-live or live broad-
`casts to be played as the mobile platform traverses a number
`of broadcasts regions. The mobile platforms can be automo-
`biles, aircraft, boats, ships, trains, or other vehicles. The com-
`munication system allows Internet access, movies, and other
`entertainment and business functions to be performed.
`
`11 Claims, 14 Drawing Sheets
`
`284
`
`29
`
`200
`
`FIREWALL
`AND
`ROUTER
`295'
`GROUND
`PROXY
`SERVER
`
`91
`
`294
`
`OTHER
`DATA
`SERVICES
`
`297
`
`217
`
`230
`
`NQC
`
`COMMUNICATIONS
`SOFTWARE
`222
`DATA QUE
`MANAGER
`
`TELEVISION
`PROGRAMMING
`SOURCE
`
`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 1
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`US 7,599,691 B1
`Page 2
`
`OTHER PUBLICATIONS
`Co-pending patent application entitled "Wireless Airport Gateway
`Communications System" filed on an even date, inventor J. Mitchell.
`Pending patent application entitled "Aircraft Satellite Communica-
`tions System For Distributing Internet Service From Direct Broad-
`
`cast Satellites" filed Sep. 13, 1999, with U.S. Appl. No. 09/394,820,
`inventor J. Mitchell.
`Chapter 9: Internet, Data and Satellite Broadcasting www.bitmicro.
`corn, "E-Disk SUW35".
`* cited by examiner
`
`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 2
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`U.S. Patent
`
`Oct. 6, 2009
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`Sheet 1 of 14
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`US 7,599,691 B1
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`30~
`
`38
`
`FIG. 7
`
`110
`
`DBS
`
`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 3
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`U.S. Patent
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`Oct. 6, 2009
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`US 7,599,691 B1
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`U.S. Patent
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 5
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`U.S. Patent
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 6
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 7
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 9
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 10
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`U.S. Patent
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 11
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`U.S. Patent
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 12
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`U.S. Patent
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`Oct. 6, 2009
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`Sheet 11 of 14
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 13
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`U.S. Patent
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 14
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`Oct. 6, 2009
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 15
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`U.S. Patent
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`Oct. 6, 2009
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`Sheet 14 of 14
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`US 7,599,691 B1
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`Petitioner Motorola Mobility LLC - Exhibit 1006 - Page 16
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`US 7,599,691 B1
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`1
`SYSTEM AND METHOD FOR INTERNET
`ACCESS ON A MOBILE PLATFORM
`
`CROSS REFERENCE TO RELATED
`APPLICATIONS
`
`The present application is related to U.S. application Ser.
`No. 09/394,820, entitled "Aircraft Satellite Communications
`System For Distributing Internet Service From Direct Broad-
`cast Satellites," invented by James P. Mitchell, filed on Sep.
`13, 1999. The present application is also related to U.S. appli-
`cation Ser. No. 09/493,770, entitled "Wireless Airport Gate-
`way Communications System," invented by James P. Mitch-
`ell, filed on an even date herewith. The present application is
`also related to U.S. application Ser. No. 09/493,771, filed on
`an even date herewith by Walzer and Mitchell entitled, "Dual
`Band Receiver for a On-Board Entertainment System," and
`U.S. application Ser. No. 09/493,472, filed on an even date
`herewith by Mitchell entitled, "Communication System and
`Method for a Mobile Platform."
`
`BACKGROUND OF THE INVENTION
`
`This present invention relates generally to a communica-
`tion system for a mobile platform. More particularly, the
`present invention relates to a data delivery system for on-
`board entertainment and office systems of mobile platforms.
`In general, on-board entertainment and office systems can be
`utilized to generate video images and audio content for occu-
`pants of a mobile platform. The video images and audio
`content can be related to movies, telephone conversations,
`and other entertainment-based or business-based material.
`Mobile platforms, such as, automobiles, airplanes, trains,
`and boats have included on-board entertainment systems.
`These systems generally provide audio-visual content to a
`display screen. The audio-visual content can be provided
`from wireless, off-board sources and from on-board sources.
`On-board sources can include equipment which plays audio
`discs, audio tapes, video discs and video tapes.
`One type o f conventional on-board entertainment system is
`an aircraft passenger entertainment system. The aircraft pas-
`senger entertainment system can provide passengers with
`audio generated from audio tape players, movies derived
`from video tape players, and interactive services, such as,
`games, shopping and telecommunications. With the excep-
`tion of interactive services related to telecommunication ser-
`vices (air-to-ground telephone calls), the aircraft passenger
`entertainment system generally utilizes strictly on-board
`sources (tape players, etc.) to provide content. Utilizing
`strictly on-board sources does not allow "live" programs or
`time sensitive programs, such as, news, sporting events, and
`commercial programming to be viewed on the aircraft. Video
`and audio tapes can take as long as several months to prepare
`before being available for viewing on the aircraft. Such a
`delay makes the viewing of sporting events, news programs,
`commercial television, stock reports, and other time sensitive
`material undesirable.
`Alternatively, on-board entertainment and office systems
`for mobile platforms can utilize off-board sources. For
`example, automobiles can include spread spectrum or ultra
`high frequency (UHF) or very high frequency (VHF) broad-
`cast antennae for receiving specialized or commercial televi-
`sion signals, respectively. In another example, proposed on-
`board entertainment systems for aircraft utilize digital
`broadcast satellite systems to provide live or near live video
`entertainment (television broadcasts) to passengers aboard an
`aircraft. However, the use of direct broadcast satellite (DBS)
`
`10
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`systems as well as UHF and VHF broadcast systems can be
`problematic as the mobile platform enters and exits zones
`where the signals cannot be received. For example, transoce-
`anic flights often enter locations which are out of range of the
`satellite system. Similarly, platform position, geographic
`considerations, and other electromagnetic radiation blocking
`phenomenon can prevent a mobile platform from appropri-
`ately receiving data from a wireless source.
`In addition, direct broadcast satellite systems and other
`broadcast systems cannot feature content for particular
`mobile platforms. The same data is received by all mobile
`platforms within the range of the source. Occupants of air-
`craft, trains, and ships having particular destinations may
`wish to receive content related to the destination. The content
`may even include commercials or advertisements directed
`toward features associated with the destination of the mobile
`platform. For example, it is desirable to show advertisements
`or previews for casinos, conventions, or other attractions
`associated with the destination. Thus, conventional off-board
`sources cannot provide audio and visual content directed to
`occupants of particular mobile platforms.
`Further, conventional off-board sources cannot provide
`content directed to particular types of mobile platforms, such
`as the type of aircraft. For example, safety messages must be
`specialized for particular types of aircraft. The same safety
`message cannot be sent via off-board sources to every aircraft
`in the fleet.
`It is also desirable to provide Internet access to occupants
`of the mobile platforms. The Internet has become extremely
`popular and continues to grow at exponential rates. For
`example, aircraft passengers could utilize the Internet for
`both business and entertainment purposes. In addition, the
`Internet is being sought as a necessity for electronic messag-
`ing as well as an alternative to television.
`Current stand-alone communications systems utilized by
`most mobile platforms lack the capacity or bandwidth to
`support true high-speed multi-user Internet browsing. These
`systems have been optimized for some data uses but are
`generally used to support low-bandwidth data and voice com-
`munications, typically ranging from 2400 bits per second to
`19.2 kilobits per second.
`Direct broadcast satellite (DBS) television systems are in
`wide use for the delivery of television programming directly
`to terrestrial homes of viewers. DBS systems operate in the
`Ku-band frequency range of 11.70 to 12.75 GHz. A DBS
`system typically consists of a DBS ground station for uplink-
`ing the programming, a geosynchronous orbiting transponder
`satellite for receiving the programming from the ground sta-
`tion on one frequency and downlinking the programming on
`another frequency, and multiple viewers with dish antennas
`and DBS receivers for receiving the downlinked program-
`ming. Digital compression is used to increase the amount of
`programming available from a satellite. MPEG-2 and
`MPEG-4 are the standard compression technologies in use by
`most DBS systems. A program provider or data source col-
`lects the programming data and sends it to the DBS ground
`station for uplinking to the satellite. Programming may be
`collected from sources by reception from other satellites,
`fiber optic lines, or the rebroadcast of digital tape. The pro-
`gramming may include data other than television program-
`ming such as Internet services. The data is compressed and
`encrypted before transmission. The viewer receives the
`downlink signals from the satellite on a parabolic dish
`antenna.
`The dish antennas are small (typically 18-inches to three
`feet in diameter) which makes the dish antennas attractive for
`home use. However, even small dish antennas can be unde-
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`sirable in certain mobile platform applications due to wind
`resistance and stability considerations.
`A down converter is typically located with the dish antenna
`and down converts the received signal into an L-band inter-
`mediate frequency (IF) signal. The L-band IF signal is sent by
`cable to the DBS receiver in the home. The DBS receiver
`decodes, decompresses, amplifies and converts the signal into
`a viewable TV image.
`On-board entertainment and office systems, such as, air-
`craft systems require the efficient delivery of data such as
`movies, programs, airline schedules, Internet data, e-mail
`communications and maps to passengers. This data needs to
`be updated or replaced so that new in-flight entertainment
`movies, new safety messages, and other information can be
`presented in flight. Also, mobile platform data, such as air-
`craft data from a FOQA (Flight Operations Quality Assur-
`ance) system generated in flight needs to be removed from the
`aircraft and transferred to an appropriate recipient of the data.
`Heretofore, the updated and new data as well as the aircraft
`data is manually transported between the aircraft and the
`terminal.
`Thus, there is a need for a mobile platform communication
`system that offers efficient delivery of data between a mobile
`platform and a docking area. There is another need for a
`wireless connectivity between an aircraft and an airport ter-
`minal; the wireless connectivity should offer much higher
`bandwidth than existing low-bandwidth communications
`systems. There is also a need for a direct broadcast satellite
`(DBS) system for delivering video data for storage on a
`mobile platform. Further, there is a need for a direct broadcast
`satellite system that can provide high-speed Internet service
`to a mobile platform along with DBS television programming
`simultaneously while using a single small antenna system
`that can easily be mounted on the mobile platform. Further
`still, there is a need to utilize excess capacity on a DBS
`television transponder to provide the modest bandwidth
`needs for Internet service on mobile platforms. There is also
`a need for a low-speed, communications channel, such as, an
`air-to-ground channel, which enables a full interactive Inter-
`net capability on a mobile platform.
`Even further, there is a need for a communication system
`that can transfer large amounts of data between a data source
`and a mobile platform parked in a docking area without hand
`carrying media containing the data. Further still, there is a
`need for a communications system that can use existing com-
`munications systems, such as, direct broadcast satellites and
`telephone systems for transfer of data between the data
`source, the data recipient, and the mobile platform.
`Still further, there is a need for a communication system
`which can provide entertainment directed to passengers of a
`particular mobile platform while utilizing video signals
`received from off-board the mobile platform. Even further
`still, there is a need for a communications system which can
`adjust to provide a continuous video stream as a mobile
`platform travels from areas of reception to non-reception. Yet
`further, there is a need for a communications system which
`includes receivers which allow video data to be received as
`the mobile platform travels across the earth.
`
`SUMMARY OF THE INVENTION
`
`An embodiment relates generally to a communication sys-
`tem for a mobile platform. The mobile platform is stationary
`at a docking area. The communication system includes a
`wireless docking area transceiver, a wireless platform trans-
`ceiver, and a storage unit. The storage unit is located on the
`mobile platform. The wireless docking area transceiver pro-
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`vides video data to the wireless platform transceiver while the
`mobile platform is at the docking area. The storage unit stores
`the video data for playback in the mobile platform.
`Another embodiment also relates to a video system for a
`mobile platform. The mobile platform is capable of traveling
`to a docking area which has a first transceiver for providing
`data representative of video. The video system includes a
`short-range transceiver configured to receive the data, a stor-
`age unit coupled to the short-range transceiver, and a proces-
`sor coupled to the storage unit. The short-range transceiver
`stores the data. The processor generates the video in response
`to the data stored in the storage unit.
`Still another embodiment further relates to a communica-
`tion system for a mobile platform. The communication sys-
`tem includes a wireless docking area transceiver, a first means
`for transmitting data, a second means for receiving data, and
`a third means for storing the data received by the second
`means. At least a portion of the data includes video data. The
`first means is located at the gate area, and the second means is
`located at the mobile platform. The third means is located at
`the mobile platform and stores the data received by the second
`means.
`Yet another embodiment relates to a method of showing
`video images related to video data on a mobile platform. The
`mobile platform is capable of traveling to a location. The
`location has a transmitter. The method includes: electroni-
`cally receiving the video data from the transmitter with a
`receiver while the mobile platform is proximate the location,
`storing the video data on-board the mobile platform, and
`displaying the video images on-board the mobile platform in
`accordance with the video data stored on-board the mobile
`platform.
`An embodiment still further relates to a communication
`system for a mobile platform. The communication system
`includes a direct broadcast receiver located on the mobile
`platform and a computer network including at least one ter-
`minal on the mobile platform, the terminal providing Internet
`access through the direct broadcast receiver.
`An embodiment also relates to a method of providing Inter-
`net service to a mobile platform. The mobile platform
`includes a direct broadcast receiver located on the mobile
`platform and computer network. The mobile platform also
`includes at least one terminal on the mobile platform. The
`method includes: providing Internet data to the computer
`network on the mobile platform via the direct broadcast
`receiver, and providing the Internet data to the terminal.
`An embodiment even further still relates to a communica-
`tion system for a mobile platform. The communication sys-
`tem includes a C-band receiver circuit disposed on a platform,
`a Ku-band receiver circuit disposed on the platform, and a
`control circuit. The control circuit is coupled to the C-band
`receiver circuit and the Ku-band receiver circuit. The C-band
`receiver circuit and the Ku-band receiver circuit receive video
`data. The control circuit selects the video data from the
`C-band receiver circuit and the Ku-band receiver circuit to
`continuously receive the video data as the mobile platform
`moves from a first zone to a second zone.
`An embodiment even further still relates to a method of
`receiving video data on a mobile platform. The method
`includes receiving first video data transmitted from a first
`band-type satellite when the mobile platform is in a first zone
`for playback on the mobile platform, and receiving second
`video data transmitted from a second band-type satellite
`receiver circuit when the mobile platform is in a second zone
`for playback on the mobile platform. The first zone is in an
`area where the first video data can be received effectively
`from the first band-type satellite, and the second zone is in an
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`area where the second data can be effectively received from
`the second band-type satellite.
`An embodiment specifically relates to a communication
`system for a mobile platform. The mobile platform is statio-
`nery at a docking area. The communication system includes a
`wireless docking area transmitter, a wireless platform
`receiver unit, and a storage unit. The storage unit is located on
`the mobile platform. The wireless docking area transmitter
`provides order wire data to the wireless platform receiver
`unit. The storage unit stores the order wire data. Video is
`provided on the mobile platform in accordance with the order
`wire data.
`An embodiment relates to the method of providing elec-
`tronic browsing services on a mobile platform. The mobile
`platform includes at least one terminal. The method includes
`receiving order wire data indicating a default home page from
`an external source. The method also includes beginning the
`electronic browsing service at the default home page.
`An embodiment also relates to a communication system
`for a mobile platform. The communication system includes a
`receiver, a computer network, and a terminal. The computer
`network is couple with the receiver. The receiver receives in
`advertising spots indication. The terminal is coupled with the
`computer network. The computer provides advertising spots
`that are associated with the advertising spots indication.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`The invention may be more fully understood by reading the
`following description of the preferred exemplary embodi-
`ments in conjunction with the appended drawings, wherein
`like numerals denote like elements, and:
`FIG. 1 is a general schematic block diagram of a commu-
`nication system for a mobile platform;
`FIG. 2 is a more detailed schematic block diagram of the
`communication system illustrated in FIG. 1, the communica-
`tion system is shown configured for communication when the
`mobile platform is located at a docking area;
`FIG. 3 is a general schematic block diagram of the com-
`munication system illustrated in FIG. 1, the communication
`system is configured for mobile platforms embodied as air-
`planes;
`FIG. 4 is a more detailed schematic block diagram of a
`communication unit on-board one of the airplanes illustrated
`in FIG. 3;
`FIG. 5 is a more detailed schematic block diagram of a
`communication unit at a docking area associated with the
`airplane illustrated in FIG. 3;
`FIG. 6 is a general schematic block diagram of the com-
`munication system illustrated in FIG. 2, the communication
`system is configured for mobile platforms embodied as air-
`planes at an airport terminal;
`FIG. 7 is a more detailed schematic diagram of the com-
`munications system illustrated in FIG. 6;
`FIG. S is a more detailed schematic diagram of an alterna-
`tive embodiment of system illustrated in FIG. 7;
`FIG. 9 is a more detailed block diagram of a media file
`server for a mobile platform, the media file server is embodied
`as an aircraft media file server for the communications system
`illustrated in FIG. 6;
`FIG. 10 is a more detailed block diagram of an alternative
`embodiment of mass memory storage unit for the media file
`server illustrated in FIG. 9;
`FIG. 11 is a general schematic block diagram of a satellite
`communication system for distributing television program-
`
`ming and Internet service from direct broadcast satellites to a
`mobile platform embodied as an aircraft communication sys-
`tem for an airplane;
`FIG. 12 is a general schematic bock diagram of an alterna-
`tive satellite communication system for distributing Internet
`service from direct broadcast satellites to a mobile platform
`embodied as an aircraft;
`FIG. 13 is a general bock diagram of a satellite television
`system for use in a mobile platform embodied as an in-flight
`entertainment system of an airplane;
`FIG. 14 is a general block diagram of a satellite receiver
`decoder unit including elements from the communication
`systems illustrated in FIGS. 11 and 12;
`FIG. 15 is a schematic block diagram of the communica-
`tion bandwidth associated with the communication system
`illustrated in FIG. 1; and
`FIG. 16 is general schematic block diagram of a satellite
`communication system for distributing television program-
`ming and Internet service from direct broadcast satellites to a
`mobile platform embodied as an automobile.
`
`DETAILED DESCRIPTION OF PREFERRED
`EXEMPLARY EMBODIMENTS
`
`With reference to FIG. 1, a communication system 30 can
`be utilized in an application including a mobile platform 35.
`Preferably, an on-board entertainment and business system
`32 is disposed on mobile platform 35. System 32 can be
`similar to an in-flight entertainment system for an airplane
`and includes a receiver 50, a storage unit 52, a network 54, and
`a display 56.
`Mobile platform 35 can be any vehicle which is not fixed to
`a permanent location. Mobile platform 35 can be an aircraft,
`automobile, truck, bus, train, boat, ship, gondola, monorail,
`or any vehicle for transporting occupants between locations.
`Embodiments of communication system 30 are discussed in
`greater detail with respect to FIGS. 1-14. In FIGS. 3-14,
`embodiments of the communication system 30 are discussed
`with respect to an exemplary platform 35, shown as an air-
`plane. Nonetheless, the principles and advantages of commu-
`nication system 30 can be applied to any type of mobile
`vehicle.
`Receiver 50 is configured to receive signals representing
`data from a wireless source, such as relay 3S. The data from
`relay 3S preferably includes video data for use with system
`32. Relay 3S can be a UHF or VHF antenna, a spread spec-
`trum antenna, a direct broadcast antenna, a satellite transpon-
`der, or any apparatus for providing a wireless connection to
`platform 35. The wireless connection is utilized to provide
`video data to receiver 50. The video data can also include
`audio data representative of audio content or conversations.
`Alternatively, a separate medium or channel can be utilized to
`provide audio data.
`The video data can be representative of Internet services,
`informational video messages, movies, electronic mail, voice
`mail, live or recorded television programs, commercials, tele-
`phone conversation, and other entertainment-based or busi-
`ness-based material. Relay 3S can generate the video data
`from a variety of internal and external sources. For example,
`relay 3S can receive information or data from external
`sources, such as, Internet 40 or a video source 42. Video
`source 42 can be a broadcast station, a receiving antenna,
`satellite, a tape player, a disc player, or other device which can
`provide video data to relay 3S. The video data from either
`source 42 or Internet 40 can be provided to receiver 50
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`through relay 3S.The video data can represent live programs,
`time sensitive shows, movies, Internet web pages, or other
`visual media.
`Receiver 50 can be any type of wireless communication
`unit capable of receiving video data from relay 3S. In addi-
`tion, receiver 50 can be configured as a transceiver to provide
`data to relay 3Swhich in turn provides data to video source 42
`and Internet 40. The video data received by receiver 50 can be
`stored in storage unit 52 and/or can be provided to network 54
`for display on display 56 or both. According to another alter-
`native, receiver 50 can be configured to provide signals rep-
`resentative of the video data directly to display 56.
`Display 56 can be a central display for all occupants of
`mobile platform 35. Alternatively, display 56 can be an in-
`seat display for passengers or operators of mobile platform
`35. Display 56 can include one or more display units, such as
`cathode ray tubes (CRTs), projection screens, liquid crystal
`displays (LCDs), plasma displays or LED displays.
`Network 54 is a computer-based network that is capable of
`providing signals to display 56 from both storage unit 52 and
`receiver 50. Network 54 can be a local area network (LAN).
`Network 54 and storage unit 52 can provide digital or analog
`video data to display 56 when reception by receiver 50 is not
`possible due to geographic considerations, the position of
`platform 35, or other reception problems between relay 3S
`and receiver 50. Thus, display 56 can advantageously provide
`continuous visual images and audio content, whether or not
`platform 35 can receive signals from relay 3S.
`Storage unit 52 can include stored video data and audio
`data. The stored video data can be received from relay 3S
`while mobile platform 35 is mobile. Alternatively, storage
`unit 52 can include an on-board source, such as, video discs or
`video tapes, which can be utilized when receiver 50 cannot
`receive video data from relay 3S.Alternatively, storage unit
`52 can receive the video data through a direct wireless link
`while mobile platform 35 is docked at a docking area as
`described below with reference to FIG. 2. Storage unit 52 can
`be a solid state memory, a disc drive capital or magnetic, a
`tape drive, or other apparatus capable of storing video data or
`signals.
`Display 56 can be a computer terminal equipped with a
`CRT, an LCD or any apparatus for providing visual images.
`Display 56 can also include speakers, telephones, head-
`phones or other devices for providing audio content. Prefer-
`ably,