Abstract:
Normally infrared data transmitted to TV is used for command protocols. The HD-XANNA converts any audio and video signal through a processor into ATSC or NTSC or SECAM and then converts this signal again into an Infrared Digital Television channel (IRDTV). This IRDTV signal travels wirelessly to an infrared adapter either on a computer or TV. The signal is then converted into standard ATSC or NTSC or SECAM which travels via a coaxial cable into the ATSC input on a given television. Although ATSC is used in the RF spectrum today, IRDTV enables a localized transmission in a secure environment giving it complete privacy settings not available through RF. The Antenna input&#39;s current off air broadcast use can now be used for receiving IRDTV signals. By feeding multiple IRDTV signal(s) from transmitter units into receiver unit(s), the TV channels switch among sources by changing channels.

Description:
BACKGROUND 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to Audio and Video transmission and switching for use with a television receiver 
         [0003]    2. Description of the Prior Art 
         [0004]    In prior art, private infrared channels have been used for remote control systems for use in a Television (TV) environment such that the user may send commands to a Television System to control volume, channels, contrast, brightness, and other TV command functions. 
         [0005]    With the advent of Digital Television Broadcast, U.S. Pat. No. 6,996,133, High Definition Video comprising 6 channel audio is now the public broadcast standard in the United States pursuant to 47 U.S.C. §303(s) authorizing the commissioner of the Federal Communications Commission to regulate public broadcast frequencies in the United States. 
         [0006]    Subsequently, 16 F.C.C.R. §5946 confirmed that as of April, 2009 all Televisions sold in the United States must accept DTV channels. At the completion of the Rulemaking process adopted by the FCC, the Consumer Electronics Association argued, inter-alia, that 85% of Americans do not use off-air Television broadcast and that the FCC was placing an unfair burden on consumers and manufactures to implement the Digital Television (DTV), ATSC standard. In  Consumer Electronics Association  v.  Federal Communications Commission  347 F.3d 291, the United States Court of Appeals, District of Columbia Circuit affirmed the FCC regulation but for the fact that the TV tuner channel was underutilized by most Americans. 
         [0007]    With such prior art, the infrared channel has never been utilized to transmit High Definition Television (HDTV) data whereby a signal can carry video for television at 1440×1080i (1440 horizontal lines by 1080 vertical lines, interlaced) and Audio up to 6 channels (commonly known as 5.1 or 5 surrounding speakers by 1 bass channel speaker) within the limited data transmission provided for in InfraRed (IR). 
         [0008]    Infra Red is a spectrum that by its characteristics through light, carries 4 times less information than Radio Frequency (RF), and is limited to line of site broadcasting only. Line of sight means that the source device must either face the light stream in order to accept the data that is being transferred through it or face a reflection of the light stream as is the case with reflective glass or IR receiver and repeater units. The line of sight qualities of this invention allow the first truly private broadcasting instrument. 
         [0009]    Recent developments by Microsoft&#39;s Windows 7, enable computer image displacement upon a Television, but cannot guarantee these images to be truly private unless plugged in through a wire. The wireless technology utilized therein bases transmission on Radio Frequency (RF). Systems like Linksys (Wireless interne networking) can be used to transmit display data by utilizing “private” networking software systems. These systems are always at risk to infiltration because they use Radio Frequency which has inherent characteristics of public travel. In other words, RF can travel through walls and windows. 
         [0010]    Radio Frequency broadcast may be intercepted by superseding software control systems by techniques known to a person having extraordinary skill in the art of software engineering. This is commonly referred to as wireless network hacking. 
         [0011]    By transmitting display data through Infrared, a user can limit the range of her display data to an area where infrared light cannot physically pass. Therefore a network surrounded by walls or reflective glass can enjoy the comfort of secured point to point Audio/Video display and having the burden of plugging in unnecessary cables. 
         [0012]    Infrared remote control enjoys such private bit-stream data properties, but is limited to simple command functionality. More complicated remote control systems which control many devices such as lighting and security still have only utilized a small part of Infrared&#39;s data carrying capability. By combining the teaching of DTV public transmission, and infrared remote controls, a new channel is hereby created where the audio and video qualities of High Definition Television broadcast can be maintained, with the added feature of complete privacy from public interception. 
       OBJECTS AND SUMMARY OF THE INVENTION 
       [0013]    Accordingly, it is an object of the present invention to provide HDTV channels from a multitude of sources through a transmitter which transcodes data into ATSC, Modulates said data into an IR capable frequency, and than transmits this frequency through an IR hi speed emitter. 
         [0014]    Once this channel has been created, Infrared ATSC shall travel over a distance depending on the strength of the emitter, into an IR receiver found on all Television devices. 
         [0015]    When this new channel is received by an IR receiver, it than re-modulates back to ATSC and connects with any television antenna coaxial input and displays whatever content was broadcasted at 1080i video and 6 channel audio on the television that was intended by the user to receive this signal. 
         [0016]    Because IR is a light based bandwidth, it cannot travel through walls and is reflected by glass. Unlike present ATSC signals, which use a Radio Frequency bandwidth which is intended to travel through walls, buildings, concrete, and the like for mass distribution over the air in urban environments; this channel carries the same data over a limited distribution area to stay private within one&#39;s home. 
         [0017]    The preferred embodiment of this invention involves an external transmitter and external receiver unit, but may be designed in a more compact fashion to work inside a unit with display capabilities to act as an integrated Transmitter or Receiver unit depending on its intended use. 
         [0018]    It is a further feature that multiple channels can be transmitted and selectively selected, such that a plurality of analog or digital, Audio and Video (AV) sources can transmit data over several modulated Infra-Red Digital Television (IRDTV) channels, and the Receiver can be set to recognize any given channel and display that channel over an Advanced Television Systems Committee (ATSC) standard input source of the TV. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  Shows how a multitude of AV sources can input into the components of the IRDTV transmitter and may be used to broadcast publicly or privately. Public broadcast is public domain prior art RF-DTV, ATSC ( FIG. 1  reference numeral  400 ), and Private Broadcast is novel in how it is claimed within ( FIG. 1  reference  300 ). 
           [0020]      FIG. 2  explains how computer data converts to DTV as ATSC 
           [0021]      FIG. 3  explains how ATSC can be modulated to IR 
           [0022]      FIG. 4  explains how IR is broadcasted at standard modulation frequencies by showing the intended use of IRATSC and how it is received by an IR input on the TV channel and how it moves into an RF antenna located on every Television 
           [0023]      FIG. 5  shows how the IR signal is re-modulated back from IRDTV into RFATSC for coaxial transmission into a Televisions RF antenna input 
           [0024]      FIG. 6  shows the process that the IRATSC data must undergo to convert into a standard ATSC channel and shows how a cable travels from the IR input of a Television into a receiver device that converts the signal into RF coaxial and plugs into the TV ATSC/RF input. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0025]    Now an embodiment of the preferred designs will be described with reference to the attached drawings. 
         [0026]      FIG. 1  shows an example of how a computer, USB, VGA, Component, composite, s-video, HDMI, and DVI signals are received and processed through a transmitter which enables RF-ATSC or IR-ATSC broadcast.  FIG. 1  reference numeral  100  designates a computer process which transmits data into input  1  of the transmitter.  FIG. 1  reference numeral  200  designates transmission from a DVD, STB, BRD, Game player, or any other AV source which utilizes VGA, Component, composite, s-video, HDMI, and DVI components to be plugged into other input channels of the broadcaster unit. 
         [0027]      FIG. 1  reference numeral  300  shows the prior art RF-DTV-ATSC broadcast process that such inputs undergo to transmit such information publicly through disruptive mediums such as walls and glass. 
         [0028]      FIG. 1  reference numeral  400  shows the process that the various inputs undergo for private IR-ATSC broadcast which is not intended for public broadcast and cannot travel through disruptive mediums such as walls and glass 
         [0029]      FIG. 1  reference numeral  1  is an AV switcher which accepts 8 different AV sources including; USB, YPrPb, CV, S-video, HDMI, CATS, DVID, DVIA, and splits any one of these sources into  FIG. 1  numeral  2 . USB is a computer data input device. YPrPb is a standard analog signal which takes AV data and transmits it through three coaxial cables which are dedicated to red, blue, and a green, horizontal, vertical bit-stream standard. CV is composite video which combines red, green, blue, horizontal and vertical into one analog coaxial cable. HDMI is an Audio and Video standard which carries AV data at 2.4 giga hertz per second for transmission of 1080P, 8 channel audio over separate copper lines. DVID is HDMI without the audio. DVIA is DVID encoded over analog. 
         [0030]      FIG. 1  reference numeral  2  is an MPEG2 HDTV encoder which converts any one source into HDTV data. This conversion takes place by a process found in U.S. Pat. No. 6,369,857. HDTV data is defined as digital or analog bit-streams which output TV data at 480P, 720P, 1080i, 768p, or 1080p. “I” refers to interlaced which is ½ a frame of a still picture. P is defined as progressive which is a full picture frame of data. The number before the i and the P refers to the amount of vertical lines said image uses to publish on a monitor. 
         [0031]      FIG. 1  reference numeral  3  is an ATSC transport multiplexer which takes HDTV data and transmits said data into ATSC. ATSC data then travels through  FIG. 1  reference numeral  4 . ATSC is the standard for broadcasting Radio-Frequency, digital television in the United States, at 1080i HDTV through the air for public channel access. This standard was developed by Zenith described in U.S. Pat. No. 4,694,338. 
         [0032]      FIG. 1  reference numeral  4  is an 8VSB modulator which Encodes a single ATSC signal to specific code such that the Television tuner may recognize what channel the signal is being broadcasted to. After modulation, the signal then travels either through the process delineated as  300  or the process delineated as  400 . 
         [0033]      FIG. 2  describes the 8VSB modulation mentioned in the preferred embodiment supra at  FIG. 1  reference numeral  300 . This modulator takes an ATSC signal and multiplies the bit-stream of that data by 0.05 megahertz in a process call quadrature modulation. Quadrature modulation takes ATSC and encodes it to keep the same characteristics of ATSC but slightly alters the bit-rate so that the data has a slight variable in which the ATSC input on the Television can recognize what channel the intended data is to be retransmitted at. This modulation is accomplished by splitting HDTV data into two channels referenced as the I channel and Q channel. This modulation standard was developed by Zenith, described in U.S. Pat. No. 4,694,338. 
         [0034]      FIG. 2  reference numeral  6  is an ATSC RF Hi Speed IR modulator with Line of Site Wireless. This is a high grade IR transmitter which pulsates Infra Red light at a coded frequency similar to Remote Control command data but much faster such that more information can be transmitted than conventionally used for mere command processes. This process is described in  FIG. 3  infra. 
         [0035]      FIG. 3  combines 3 data variables that encode data such that an Infra-Red Light Emitting Diode (IR LED) can transmit Infra-Red Digital Television (IRDTV) in order to achieve the desired private home viewing effect. 
         [0036]    The first data variable is the I channel which is a 5.5 mega hertz per second bit-stream which is labeled as variable X in  FIG. 3  reference numeral  7 . 
         [0037]    The Second data variable is the Q channel which is a 0.05 mega hertz per second bit-stream which is labeled as variable Y in  FIG. 3  reference numeral  8 . 
         [0038]    The Third data variable is a 4 mega hertz Crystal Oscillator which creates a carrier frequency (fo) that introduces an artificially created bit-stream at this stage of signal transmutation. This signal allows for a third variable in order to undergo a multiplication process from which an Infra-Red Digital Television (IRDTV) channel can be created referenced as  FIG. 3  numeral  9 , cross reference as variable Z. 
         [0039]      FIG. 3  works through a three variable multiplication function, which applies to a two step addition function: The multiplication function is labeled  FIG. 3  numeral  500 , the addition function is labeled  FIG. 3  numeral  600 , and the IR transmission process if labeled  FIG. 3  numeral  700 . 
         [0040]      FIG. 3  reference numeral  500  introduces a carrier frequency (fo) of a 4 mega hurtz signal if astandard IR LED or up to 1 Giga Hurtz if a Fiber Optic LED as described in  FIG. 3  reference numeral  6 . By multiplying the function described in  FIG. 3  reference numeral  6  by negative sin times two times π times fot times variable Y which is  FIG. 3  reference number  8 , the first two multiplied variables create a signal which travels to  FIG. 3  reference  9 . A second multiplication sequence also travels to  FIG. 3  reference numeral  9  by multiplying  FIG. 3  reference numeral  6  times cos times two times π times fot times variable X which is  FIG. 3  reference numeral  7   
         [0041]      FIG. 3  reference  10  is an adder that takes the two described multipliers and adds them together in order to produce an appropriate modulated signal which travels to a driver amplifier which is  FIG. 3  reference  11 . 
         [0042]      FIG. 3  reference  11  than amplifies this newly created signal through a driver creating an electronic code which is sent to  FIG. 3  reference numeral  12 . 
         [0043]      FIG. 3  reference numeral  12  accepts the amplified, coded signal and transmits this signal into an IR LED which pulsates an otherwise constant infrared light signal within a sequence which creates IRDTV channels described in  FIG. 4 , reference numeral  13   
         [0044]      FIG. 4  shows the interplay of  FIG. 3  and the subsequent IRDTV channel which ultimately winds up to the TV&#39;s RF Coaxial input though the receiving module described infra by  FIG. 5 . IRDTV is infrared light, sequenced such that a receiving unit can decode the infrared bit-stream into ATSC in order to broadcast the original content on any Antenna input of a Television. 
         [0045]      FIG. 5  is the receiving unit which accepts IRDTV, converts IRDTV to RFATSC, and Broadcasts the original content via Coaxial cable. The re-created RFATSC travels into a Television&#39;s RF coaxial input slot. This is accomplished first by capturing IRDTV by a fiber optic grade IR receiver labeled  FIG. 5  reference numeral  14  and distributing that signal via coaxial cable to a Frequency Heterodyne Processor labeled  FIG. 5  reference numeral  15 . 
         [0046]      FIG. 5  reference numeral  13  is a frequency heterodyne processor which takes the IRDTV signal and splits the signal into a Q channel and an I channel already described. By applying the properties of oscillating frequencies described in the mathematical sin function, the heterodyne processor inverts the single IR signal into a two channel oscillating frequency. Once these two channels are reverted back to oscillation, they travel through a coaxial cable into an RF antenna which is  FIG. 5  reference numeral  16 , through a process described as  FIG. 5  reference numeral  500 . 
         [0047]      FIG. 5  reference numeral  500  describes the inverse mathematical function described in  FIG. 3 . A single pulsating light signal creates a data bit stream ranking from 30 kila hertz to 100 kila hertz. That signal is first amplified because of natural signal degradation as light travels further thereby wearing away its focus. After LED transmission IR is focused, whereas the further distance it travels the less focused and precise IR becomes. Therefore amplification refocuses the original IR data and is achieved by a driver shown in  FIG. 5  numeral  15 . 
         [0048]    After the signal is amplified it travels via CATS cable to a multiplier which is  FIG. 5  reference numeral  17 . This amplified signal is described as fo. The formula being applied to achieve reverse modulation is fo equals TV channel minus 4 Mega hertz. The TV channel is the I channel at 0.5 mega hertz which is an encoded signal which decodes the Q-channel based on the signal the Television was directed to look for by the tuner. 4 mega hertz is added to the Q channel by a Crystal Oscillator. Because Radio Frequency carries 4 wavelengths in the ATSC context, the crystal is shaped to multiply the infrared light frequency by a factor of 4. Once the multiplier applies the reverse formula described in  FIG. 3 , the original ATSC signal is restored. The signal is displayed on the Television at virtually the same time the Transmitter produced it, minus a small time delay based on the distance light traveled from the IRLED transmitter to the RF antenna input which is  FIG. 5  reference numeral  18 . This process culminates at the TV&#39;s RFATSC antenna input which is  FIG. 5  reference numeral  18 . 
         [0049]      FIG. 6  describes the preferred embodiment of the Receiver unit.  FIG. 6  reference numeral  17  is a standard IR window located in front of all Television units. Although the IR window is directed to the Televisions IR receiver, the IRDTV signal is intercepted by an IR repeater described in  FIG. 6  reference numeral  18 . The intercepted IR signal travels down the first flexible metal rod which is  FIG. 6  reference numeral  19 . This Flexible medal rod is a cable capable of transmitting regular RFDTV information. This rod connects to  FIG. 6  reference numeral  20 . 
         [0050]      FIG. 6  is an embodiment of  FIG. 5 . Once the signal is decoded by  FIG. 6  reference numeral  20  it travels to  FIG. 6  reference numeral  21 . 
         [0051]      FIG. 6  reference numeral  21  is the same metal rod described in  FIG. 6  reference numeral  19 , with angular flexing capabilities. It can be shaped behind any mounted or un-mounted Television to connect to  FIG. 6  reference numeral  22 . 
         [0052]      FIG. 6  reference numeral  21  is an F connector Male end of a cable to be plugged into  FIG. 6  reference numeral  22 . 
         [0053]      FIG. 6  reference numeral  23  is the Televisions RFATSC input slot which connects to the TV tuner. The TV tuner can discreetly accept any one of the 8 original sources originally broadcasted by the transmitter unit, so long as the user directs the tuner to tune to a certain channel. As a result, the home viewer can change channels on his Television and watch any of the original sources by simply changing channels. For example, if the computer was set to channel  3 , the DVD to channel  4 , and the game consul to channel  5 . The user can set the TV tuner to channel  3  to watch his computer content, channel  4  to watch DVD content, and channel  5  to play his game consul content.